WO2004010879A1 - Medical suction device, particularly adapted for removing kidney stone - Google Patents

Medical suction device, particularly adapted for removing kidney stone Download PDF

Info

Publication number
WO2004010879A1
WO2004010879A1 PCT/US2003/023078 US0323078W WO2004010879A1 WO 2004010879 A1 WO2004010879 A1 WO 2004010879A1 US 0323078 W US0323078 W US 0323078W WO 2004010879 A1 WO2004010879 A1 WO 2004010879A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction
elongated member
medical device
passageway
distal portion
Prior art date
Application number
PCT/US2003/023078
Other languages
French (fr)
Inventor
Jason W. Kear
Original Assignee
Boston Scientific Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boston Scientific Limited filed Critical Boston Scientific Limited
Priority to CA002493095A priority Critical patent/CA2493095A1/en
Priority to AU2003256716A priority patent/AU2003256716A1/en
Priority to EP03771759A priority patent/EP1524944A1/en
Publication of WO2004010879A1 publication Critical patent/WO2004010879A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/22031—Gripping instruments, e.g. forceps, for removing or smashing calculi
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/30—Surgical pincettes without pivotal connections
    • A61B2017/306—Surgical pincettes without pivotal connections holding by means of suction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/30—Surgical pincettes without pivotal connections
    • A61B2017/306—Surgical pincettes without pivotal connections holding by means of suction
    • A61B2017/308—Surgical pincettes without pivotal connections holding by means of suction with suction cups
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers

Definitions

  • the invention relates generally to medical devices.
  • Typical stone retrieval devices are used for retrieving objects, such as kidney stones, that are disposed in easily-accessed areas of a patient's urinary tract.
  • Some known stone retrieval devices are configured such that a physician must advance the device past the object, deploy a basket, and then pull the device back toward the object to capture the object in the basket.
  • the device cannot be advanced beyond the object and therefore cannot capture the object.
  • Stone retrieval devices configured with graspers can be used to try to retrieve stones embedded in tissue or located in the lower calyx. These devices typically are not very flexible, however, and therefore frequently are not useful in reaching and capturing such objects. Further, grasping stone retrieval devices may not be able to retrieve a certain object due to the size and/or shape of that object.
  • the present invention relates to medical retrieval devices and related methods for accessing and then retaining, relocating, and/or removing an object disposed in an internal location of a patient's body (such as the urinary system) which is not easily accessed by currently available retrieval devices.
  • the invention involves a medical device.
  • the medical device includes an elongated member that is configured for placement in a channel of a flexible ureteroscope.
  • the elongated member defines a suction passageway which extends longitudinally therethrough.
  • the elongated member bends with the flexible ureteroscope when placed within the channel of the flexible ureteroscope.
  • the suction passageway resists collapsing when suction is provided through the suction passageway by a vacuum source.
  • the elongated member includes a proximal portion for communicating with the vacuum source to provide the suction through the suction passageway and a distal portion for contacting an object and retaining the object in contact with the distal portion when the suction is provided through the suction passageway.
  • the distal portion can include a tapered tip.
  • the distal portion can include a tip which includes a concave portion for contacting the object and retaining the object in contact with the concave portion when the suction is provided through the suction passageway.
  • the distal portion can include a tip which includes a plurality of members extending radially outward from the tip. The plurality of members prevent tissue proximate to the object from being drawn into the suction passageway when suction is provided through the suction passageway.
  • the distal portion can include a tip which includes a concave portion.
  • the concave portion prevents tissue proximate the object from being drawn into the suction passageway when the suction is provided through the suction passageway.
  • the elongated member can include a mesh to reinforce the member and thus resist collapse of the suction passageway when suction is provided.
  • the mesh can extend longitudinally and circumferentially along the elongated member.
  • the mesh can include stainless steel.
  • the elongated member can include a coil which extends longitudinally and circumferentially along the elongated member.
  • the proximal portion can include a luer connector and/or a handle for connecting to the vacuum source.
  • the handle can include a switch for selectively enabling and disabling the suction through the suction passageway.
  • the proximal portion can be in communication with a regulator for regulating the suction through the suction passageway.
  • the elongated member can be made of a material such as a biocompatible plastic, a biocompatible polyurethane, or a biocompatible rubber, for example.
  • the elongated member can have an outside diameter of between two and three french. At least some of the distal portion can be radiopaque.
  • the invention in another aspect, involves a method of contacting and moving an object disposed in a patient.
  • the method includes providing a vacuum source, providing a flexible ureteroscope and introducing the ureteroscope into a patient, and providing a medical device.
  • the medical device includes an elongated member that is configured for placement in a channel of the flexible ureteroscope.
  • the elongated member defines a suction passageway extending longitudinally therethrough. The elongated member bends with the ureteroscope when the elongated member is placed within the channel of the flexible ureteroscope.
  • the suction passageway resists collapsing when suction is provided through the suction passageway by the vacuum source.
  • the elongated member includes a proximal portion for communicating with the vacuum source to provide the suction through the suction passageway, and a distal portion for contacting an object and retaining the object in contact with the distal portion when the suction is provided through the suction passageway.
  • the method further includes introducing the medical device into the channel of the flexible ureteroscope, providing suction through the suction passageway and retaining the object in contact with the distal portion, and moving the retained object from a first location in the patient to a second location.
  • the method can further include moving the retained object to a second location. Moving the retained object to a second location can include moving the retained object outside the patient or to another location inside the patient.
  • FIG. 1 A is an illustrative diagram of a stone retrieval suction device, according to one embodiment of the invention.
  • Fig. IB is an illustrative cross sectional view of the stone retrieval suction device of Fig. 1 A, taken along line B-B in Fig. 1 A.
  • Fig. 2 is an illustrative diagram of a flexible ureteroscope disposed in a patient and a stone retrieval suction device in communication with a vacuum source disposed outside of the patient, according to one embodiment of the invention.
  • Fig. 3 is an illustrative diagram of the stone retrieval suction device of Fig. 2 partially disposed in a channel of the flexible ureteroscope.
  • Fig. 4 A is an illustrative diagram of the stone retrieval suction device of Fig. 2 disposed in the channel of the flexible ureteroscope and extending out of a distal end of the ureteroscope and into the patient's kidney.
  • Fig. 4B is an illustrative diagram of a stone retrieval suction device disposed in the channel of the flexible ureteroscope and also in communication with a remote vacuum source through an extension tube, according to another embodiment of the invention.
  • Fig. 5 is an illustrative cross sectional view of a distal portion of a stone retrieval suction device disposed inside the patient and proximate an object disposed in the patient's kidney, according to one embodiment of the invention.
  • Fig. 6 is an illustrative cross sectional view of the distal portion of the stone retrieval suction device of Fig. 5 contacting and retaining the object disposed in the patient's kidney.
  • Fig. 7 is an illustrative cross sectional view of the distal portion of the stone retrieval suction device of Fig. 6 after the object disposed in a patient's kidney has been relocated.
  • Fig. 8 is an illustrative cross sectional view of the distal portion of the stone retrieval suction device of Fig. 7 after the object disposed in a patient's kidney has been released.
  • Fig. 9 is an illustrative cross sectional view of the distal portion of the stone retrieval suction device of Fig. 7 removing the object from the patient's kidney.
  • Fig. 10A is an illustrative diagram of a stone retrieval suction device including a mesh, according to another embodiment of the invention.
  • Fig. 10B is an illustrative cross sectional view of the stone retrieval suction device of Fig.
  • Fig. 10C is an illustrative cross sectional view of the stone retrieval suction device of Fig. 10A, taken along line B-B in Fig.10 A, according to another embodiment of the invention.
  • Fig. 10D is an illustrative cross sectional view of the stone retrieval suction device of Fig. 10A, taken along line B-B in Fig.10 A, according to still another embodiment of the invention.
  • Fig. 11 A is an illustrative diagram of a stone retrieval suction device including a coil, according to one embodiment of the invention.
  • Fig. 1 IB is an illustrative cross sectional view of the stone retrieval suction device of Fig. 11 A, taken along line B-B in Fig. 11 A, according to one embodiment of the invention.
  • Fig. 11C is an illustrative cross sectional view of the stone retrieval suction device of Fig.
  • Fig. 1 ID is an illustrative cross sectional view of the stone retrieval suction device of Fig. 11 A, taken along line B-B in Fig. 11 A, according to still another embodiment of the invention.
  • Fig. 12 is an illustrative cross sectional view of a tapered tip coupled to a distal portion of the stone retrieval suction device, according to one embodiment to the invention.
  • Fig. 13 A is an illustrative cross sectional view of a tip including a concave portion coupled to a distal portion of the stone retrieval suction device, according to another embodiment to the invention.
  • Fig. 13B is an illustrative cross sectional view of a tip including a concave portion coupled to a distal portion of the stone retrieval suction device, according to yet another embodiment to the invention.
  • Fig. 14 is an illustrative cross sectional view of a tip including a plurality of arms extending radially outward coupled to a distal portion of the stone retrieval suction device, according to still another embodiment to the invention.
  • Fig. 15 is an illustrative cross sectional view of a tapered tip coupled to a distal portion of the stone retrieval suction device including a mesh disposed on the inner surface of a wall of the elongated member, according to one embodiment to the invention.
  • Fig. 16 is an illustrative cross sectional view of a tip including a concave portion coupled to a distal portion of the stone retrieval suction device including a mesh disposed in a wall of the elongated member, according to another embodiment to the invention.
  • Fig. 17 is an illustrative cross sectional view of a tip including a plurality of arms extending radially outward coupled to a distal portion of the stone retrieval suction device including a mesh disposed on the outer surface of a wall of the elongated member, according to still another embodiment to the invention.
  • Fig. 18 is an illustrative cross sectional view of a tapered tip coupled to a distal portion of the stone retrieval suction device including a coil disposed on the inner surface of a wall of the elongated member, according to one embodiment to the invention.
  • Fig. 19 is an illustrative cross sectional view of a tip including a concave portion coupled to a distal portion of the stone retrieval suction device including a coil disposed in a wall of the elongated member, according to another embodiment to the invention.
  • Fig. 20 is an illustrative cross sectional view of a tip including a plurality of arms extending radially outward coupled to a distal portion of the stone retrieval suction device including a coil disposed on the outer surface of a wall of the elongated member, according to still another embodiment to the invention.
  • Fig. 21 is an illustrative diagram of the stone retrieval suction device including a handle disposed in the channel of the flexible ureteroscope and extending out of a distal end of the ureteroscope and into the patient's kidney.
  • Figs. 22 A and 22B are illustrative cross sectional diagrams of a handle of the stone retrieval suction device, according to one embodiment of the invention.
  • Figs. 23 A and 23B are illustrative cross sectional diagrams of a handle of the stone retrieval suction device, according to another embodiment of the invention.
  • Fig. 24 A is an illustrative diagram of a handle of the stone retrieval suction device, according to still another embodiment of the invention.
  • Figs. 24B and 24C are illustrative cross sectional diagrams of the handle shown in Fig.
  • Objects such as kidney stones (calculi) and other natural or foreign materials, can become trapped in a patient's urinary system. These objects can be disposed in areas of the urinary system that are easily accessed by currently available stone retrieval devices. These objects can also be disposed in areas of the urinary system, such as embedded in tissue or located in a lower calyx of a patient's kidney, for example, which are not easily accessed by currently available stone retrieval devices.
  • the present invention relates to medical devices and related methods for accessing and then retaining, relocating, and/or removing an object disposed in an internal area of a patient's body (such as the urinary system) which is difficult or impossible to access with currently available retrieval devices or methods.
  • the stone retrieval suction device 100 includes an elongated member 102 which defines a suction passageway 110 extending longitudinally therethrough.
  • the elongated member 102 is designed to be placed in a channel of a flexible ureteroscope and has an outside diameter of between two and three french.
  • the elongated member 102 bends with the flexible ureteroscope when placed within the channel of the flexible ureteroscope.
  • the suction passageway 110 resists collapsing when suction is provided through the suction passageway 110 by a vacuum source.
  • the elongated member 102 can be reinforced to resist collapse of the suction passageway 110 when suction is provided through the suction passageway 110.
  • the bendable elongated member 102 is formed of Pebax, PTFE, or Polyuethane.
  • the elongated member further includes a proximal portion 108.
  • the proximal portion 108 is in communication with the vacuum source to provide suction through the suction passageway 110.
  • the proximal portion 108 can also include a luer connector 104.
  • the luer connector 104 is used to connect the elongated member 102 to the vacuum source.
  • the elongated member further includes a distal portion 106 for making contact with an object disposed in a patient, such as a kidney stone.
  • the distal portion 106 retains the object in contact with the distal portion 106 when suction is provided through the suction passageway 110.
  • the distal portion 106 can also include a tapered tip 112 which is used to contact the object.
  • the distal portion 106 can include other types of tips which are discussed in further detail below.
  • the distal portion 106 can also include a radiopaque material which facilitates easily locating the elongated member 102 with a fluoroscope when the elongated member 102 is disposed within the patient.
  • the radiopaque material can be painted on, and/or embedded in, the elongated member 102.
  • the radiopaque material can also be a band painted on, embedded in, and/or wrapped around the distal portion 106 of the elongated member 102.
  • the radiopaque material can be tungsten filled ink, bismuth subcarbonate, or barium sulfate.
  • the radiopaque material can be a platinum or tantalum metal band.
  • the elongated member 102 can be extruded from any of the materials previously described using known extrusion techniques.
  • the luer connector 104 can be made of molded plastic or metal, such as stainless steel.
  • the tapered tip 112 can also be made of molded plastic or metal.
  • a user inserts a distal end 216 of a flexible ureteroscope 214 into the patient's urethra 202.
  • the user advances the flexible ureteroscope 214 so that the distal end 216 passes into and through the urinary bladder 204, into and through the ureter 206, and into the kidney 208.
  • the user positions the distal end 216 of the flexible ureteroscope 214 within the patient's kidney 208 by manipulating positioning knobs 230, 232.
  • the knob 230 moves the distal end 216 vertically and the knob 232 moves the distal end 216 horizontally.
  • the user can position a distal channel opening 228 of the flexible ureteroscope 214 proximate an object, such as a kidney stone, that is disposed in the patient's kidney 208.
  • the user then connects the luer connector 104 to a regulator 210 which, in turn, is connected to a vacuum source 212.
  • the vacuum source 212 provides suction through the suction passageway 110 and the regulator 210 allows the user to vary the suction provided by the vacuum source 212 by adjusting a suction adjustment dial 222.
  • the vacuum source 212 is located near the patient. In another embodiment, the vacuum source 212 can be located remotely and is discussed in further detail below.
  • the elongated member 102 includes a material that enables the elongated member 102 to bend with the flexible ureteroscope 214.
  • the user After the user has inserted the flexible ureteroscope 214 into the patient, the user then inserts the distal portion 106 of the elongated member 102 into a proximal channel opening 226 at a proximal end 218 of the flexible ureteroscope 214.
  • the user then advances the distal portion 106 through the channel 502 (shown in Fig. 5) of the flexible ureteroscope 214 until the tapered tip 112 extends out of the distal channel opening 228 at the distal end 216 of the flexible ureteroscope 214.
  • the elongated member 102 can be connected to a remotely located vacuum source 212 (such as a vacuum source located on a wall).
  • the elongated member 102 communicates with the regulator 210 through an extension tube 402.
  • the luer connector 104 of the elongated member 102 is mated to a first luer connector 406 disposed on a proximal end 408 of the extension tube 402.
  • a second luer connector 404 disposed on a distal end 410 of the extension tube is connected to the regulator 210.
  • the user switches on the suction (using switch 220).
  • the suction pulls the kidney stone 504 in a direction (indicated by arrow 506) toward the tapered tip 112.
  • the kidney stone 504 makes contact with the tapered tip 112 and is held in contact with the tapered tip 112 by the continuous suction through the suction passageway 110 (shown in Fig. IB). If the kidney stone 504 is embedded in tissue, the user moves the tapered tip 112 toward the embedded kidney stone 504.
  • the suction through the suction passageway 110 retains the kidney stone 504 in contact with the tapered tip 112.
  • the user can then pull the kidney stone 504 free by retracting the distal portion 106 of the elongated member 102 into the channel 502.
  • This device and method enables the user to capture and retain the kidney stone 504 even when the kidney stone 504 is embedded in tissue or located in a portion of the patient's body that is difficult or impossible to access with typical basket and/or grabber stone retrieval devices.
  • the user can reposition the distal end 216 of the flexible ureteroscope 214 with the distal portion 106 of the elongated member 102 still extending beyond the distal channel opening 218 and retaining the kidney stone 504 in contact with the tapered tip 112.
  • the purpose of repositioning the distal end 216 of the flexible ureteroscope 214 is to move the kidney stone 504 to an area in the kidney that is easily accessed by typical stone retrieval baskets or grabbers.
  • the user can release the kidney stone 504 by discontinuing the suction and retracting the distal portion 106 of the elongated member 102 through the distal channel opening 218.
  • the user can use any of a variety of existing stone retrieval devices to capture and remove the kidney stone 504 from the patient's urinary system.
  • the stone retrieval suction device 100 includes a mesh 1002 which extends longitudinally and circumferentially along the elongated member 102.
  • the mesh 1002 can be made of stainless steel and/or other material(s).
  • the mesh 1002 can be, for example, formed by two or more cords that are woven together to form the mesh 1002 with each cord having one or more, for example three or more, component strands. Each of the strands could be thin wire or metal or a metal alloy, for example.
  • the mesh 1002 reinforces the elongated member 102 so that the elongated member 102 does not collapse when suction is provided through the suction passageway 110 by the vacuum source 212 (Fig. 4 A).
  • the cords of the mesh 1002 can be either spaced closely together to form a dense mesh or spaced far apart to form a sparse or open mesh.
  • the mesh 1002 can be affixed to an inner surface 1006 (Figs. 10C and 15) or an outer surface 1004 (Figs. 10B and 17) of the elongated member 102.
  • the mesh 1002 can also be embedded between the inner surface 1006 and the outer surface 1004 of the elongated member 102 (Figs. 10D and 16).
  • the stone retrieval suction device 100 includes a coil 1102 which extends circumferentially and longitudinally along the elongated member 102.
  • the coil 1102 can be made of stainless steel and/or other material(s).
  • the coil 1102 can be, for example, formed by a cord with the cord having one or more, for example three or more, component strands. Each of the strands could be thin wire or metal or a metal alloy, for example.
  • the coil 1102 reinforces the elongated member 102 so that the elongated member 102 does not collapse when suction is provided through the suction passageway 110 by a vacuum source.
  • the coil 1102 can be tightly wound so that the individual coils are spaced closely together to form a dense coil or the coil 1102 an be loosely wound so that the individual coils are spaced far apart to form an open coil.
  • the coil 1102 can be affixed to the inner surface 1006 (Figs. 11C and 18) or the outer surface 1004 (Figs. 1 IB and 20) of the elongated member 102.
  • the coil 1102 can also be embedded between the inner surface 1006 and the outer surface 1004 of the elongated member 102 (Figs. 1 ID and Referring to Fig. 12, the distal portion 106 of the elongated member 102 can include a tapered tip 112.
  • the tapered tip 112 can be made of molded plastic or metal, for example, although other materials or combinations of materials are possible.
  • the distal portion 106 can include a tip 1302 with a concave portion 1304.
  • the concave portion 1304 is used to contact an object disposed in a patient's urinary system and retain the object in contact with the concave portion 1304 when suction is provided through the suction passageway 110.
  • the distal portion 106 can include a concave portion 1306 with a tapered tip 1308 within the concave portion 1306.
  • the concave portion 1306 is used to keep surrounding tissue away from the suction in the tapered tip 1308 when the tapered tip 1308 contacts an object.
  • the distal portion 106 can include a tip 1402 which includes a plurality of members 1404. The plurality of members 1404 extend radially outward from the tip 1402 and prevent tissue (proximate to an object being contacted) from being pulled into the suction passageway 110.
  • the tips 1302, 1402 can also be made of molded plastic or metal.
  • the suction retrieval device 100 can include a handle 2102.
  • the handle 2102 includes a suction button 2104 which is used to enable and disable the suction in the suction passageway 110 by uncrimping and crimping a portion of the elongated member 102 disposed in the handle 2102.
  • the suction button 2104 is not pressed (default position)
  • the suction button 2104 is positioned such that a rigid member 2108 presses against the suction tube 302 thereby crimping the elongated member 102 and disabling the suction in the suction passageway 110.
  • the suction button 2104 When the suction button 2104 is pressed (in the direction indicated by arrow 2106), the suction button 2104 is positioned such that the rigid member 2108 no longer crimps the elongated member 102, thereby enabling suction in the suction passageway 110. As long as the suction button 2104 is pressed, the suction in the suction passageway 110 is enabled. As soon as the suction button 2104 is released, the suction in the suction passageway 110 is disabled. In operation, after inserting the flexible ureteroscope 214 into the patient's urinary system, the user connects the luer connector 104 to the regulator 210 and then guides the elongated member 102 into and through the channel of the flexible ureteroscope 214.
  • the user then turns on the vacuum source 212 with the switch 220 and adjusts the suction with suction adjustment knob 222 on the regulator 210.
  • the user positions the elongated member 102 proximate to an object disposed in the patient's urinary system by the method previously described, and then presses the suction button 2104 on the handle 2102 to engage the suction (by uncrimping the portion of elongated member 102 disposed in the handle 2102).
  • the user releases the button 2104 to disengage the suction (by crimping the portion of elongated member 102 disposed in the handle 2102) thereby releasing the object.
  • the suction retrieval device 100 can include a handle 2302.
  • the handle 2302 includes a suction port 2306 which is used to enable and disable the suction in the distal portion 106 of the suction passageway 110.
  • the suction port 2306 is an opening to the suction passageway 110 and allows outside air to be sucked into the suction passageway 110 by the vacuum source (as indicated by arrows 2304) when left open or uncovered.
  • the suction in the distal portion 106 of the suction passageway 110 is significantly reduced or disabled entirely.
  • the suction port 2306 is covered, by a user's finger 2308 for example, the suction port 2306 is sealed and the suction in the distal portion 106 of the suction passageway 110 is restored.
  • the suction retrieval device 100 can include a handle 2402.
  • the handle 2402 includes a rotatable valve 2404 which is used to enable and disable the suction in the distal portion 106 of the suction passageway 110 by redirecting the suction from the vacuum source.
  • the valve 2404 includes a handle 2412 (for rotating the valve) and two perpendicular suction tubes 2416, 2414. When the valve 2404 is rotated to an open position (Fig. 24B), a suction port 2406 is put in communication with the vacuum source via the suction tubes 2414, 2416.

Abstract

A stone retrieval suction device (100) facilitates the retention and then relocation and/or removal of objects disposed in a patient's urinary system (208). The device includes an elongated member (102) for placement in a channel of a flexible ureteroscope (214). The elongated member defines a suction passageway which extends longitudinally therethrough. The elongated member (102) is flexible enough to bend with the flexible ureteroscope, and it is strong enough to prevent collapse of the suction passageway when suction is provided through the suction passageway by a vacuum source. The elongated member includes a distal portion (112) for contacting and retaining an object when the suction is provided.

Description

MEDICAL SUCTION DEVICE , PARTICULARLY ADAPTED FOR REMOVING KIDNEY STONE
Technical Field The invention relates generally to medical devices.
Background Information Typical stone retrieval devices are used for retrieving objects, such as kidney stones, that are disposed in easily-accessed areas of a patient's urinary tract. Some known stone retrieval devices are configured such that a physician must advance the device past the object, deploy a basket, and then pull the device back toward the object to capture the object in the basket. In situations where the object is embedded in tissue or located in a lower calyx of a patient's kidney, the device cannot be advanced beyond the object and therefore cannot capture the object. Stone retrieval devices configured with graspers can be used to try to retrieve stones embedded in tissue or located in the lower calyx. These devices typically are not very flexible, however, and therefore frequently are not useful in reaching and capturing such objects. Further, grasping stone retrieval devices may not be able to retrieve a certain object due to the size and/or shape of that object.
Summary of the Invention Objects, such as kidney stones and other natural or foreign materials, can become trapped in a patient's urinary system. These objects can be disposed in areas of the urinary system which are not easily accessed by currently available stone retrieval devices. The present invention relates to medical retrieval devices and related methods for accessing and then retaining, relocating, and/or removing an object disposed in an internal location of a patient's body (such as the urinary system) which is not easily accessed by currently available retrieval devices. In one aspect, the invention involves a medical device. The medical device includes an elongated member that is configured for placement in a channel of a flexible ureteroscope. The elongated member defines a suction passageway which extends longitudinally therethrough. The elongated member bends with the flexible ureteroscope when placed within the channel of the flexible ureteroscope. The suction passageway resists collapsing when suction is provided through the suction passageway by a vacuum source. The elongated member includes a proximal portion for communicating with the vacuum source to provide the suction through the suction passageway and a distal portion for contacting an object and retaining the object in contact with the distal portion when the suction is provided through the suction passageway.
Embodiments according to this aspect of the invention can include various features. For example, the distal portion can include a tapered tip. The distal portion can include a tip which includes a concave portion for contacting the object and retaining the object in contact with the concave portion when the suction is provided through the suction passageway. The distal portion can include a tip which includes a plurality of members extending radially outward from the tip. The plurality of members prevent tissue proximate to the object from being drawn into the suction passageway when suction is provided through the suction passageway. The distal portion can include a tip which includes a concave portion. The concave portion prevents tissue proximate the object from being drawn into the suction passageway when the suction is provided through the suction passageway. The elongated member can include a mesh to reinforce the member and thus resist collapse of the suction passageway when suction is provided. The mesh can extend longitudinally and circumferentially along the elongated member. The mesh can include stainless steel. The elongated member can include a coil which extends longitudinally and circumferentially along the elongated member. The proximal portion can include a luer connector and/or a handle for connecting to the vacuum source. The handle can include a switch for selectively enabling and disabling the suction through the suction passageway. The proximal portion can be in communication with a regulator for regulating the suction through the suction passageway. The elongated member can be made of a material such as a biocompatible plastic, a biocompatible polyurethane, or a biocompatible rubber, for example. The elongated member can have an outside diameter of between two and three french. At least some of the distal portion can be radiopaque.
In another aspect, the invention involves a method of contacting and moving an object disposed in a patient. The method includes providing a vacuum source, providing a flexible ureteroscope and introducing the ureteroscope into a patient, and providing a medical device. The medical device includes an elongated member that is configured for placement in a channel of the flexible ureteroscope. The elongated member defines a suction passageway extending longitudinally therethrough. The elongated member bends with the ureteroscope when the elongated member is placed within the channel of the flexible ureteroscope. The suction passageway resists collapsing when suction is provided through the suction passageway by the vacuum source. The elongated member includes a proximal portion for communicating with the vacuum source to provide the suction through the suction passageway, and a distal portion for contacting an object and retaining the object in contact with the distal portion when the suction is provided through the suction passageway. The method further includes introducing the medical device into the channel of the flexible ureteroscope, providing suction through the suction passageway and retaining the object in contact with the distal portion, and moving the retained object from a first location in the patient to a second location. Embodiments according to this aspect of the invention can include various features. For example, the method can further include moving the retained object to a second location. Moving the retained object to a second location can include moving the retained object outside the patient or to another location inside the patient.
The foregoing and other objects, aspects, features, and advantages of the invention will become more apparent from the following description and from the claims.
Brief Description of the Drawings In the drawings, like reference characters generally refer to the same parts throughout the different views. Also, the drawings are not necessarily to scale, emphasis instead generally being placed upon illustrating the principles of the invention. Fig. 1 A is an illustrative diagram of a stone retrieval suction device, according to one embodiment of the invention.
Fig. IB is an illustrative cross sectional view of the stone retrieval suction device of Fig. 1 A, taken along line B-B in Fig. 1 A.
Fig. 2 is an illustrative diagram of a flexible ureteroscope disposed in a patient and a stone retrieval suction device in communication with a vacuum source disposed outside of the patient, according to one embodiment of the invention.
Fig. 3 is an illustrative diagram of the stone retrieval suction device of Fig. 2 partially disposed in a channel of the flexible ureteroscope.
Fig. 4 A is an illustrative diagram of the stone retrieval suction device of Fig. 2 disposed in the channel of the flexible ureteroscope and extending out of a distal end of the ureteroscope and into the patient's kidney.
Fig. 4B is an illustrative diagram of a stone retrieval suction device disposed in the channel of the flexible ureteroscope and also in communication with a remote vacuum source through an extension tube, according to another embodiment of the invention. Fig. 5 is an illustrative cross sectional view of a distal portion of a stone retrieval suction device disposed inside the patient and proximate an object disposed in the patient's kidney, according to one embodiment of the invention. Fig. 6 is an illustrative cross sectional view of the distal portion of the stone retrieval suction device of Fig. 5 contacting and retaining the object disposed in the patient's kidney. Fig. 7 is an illustrative cross sectional view of the distal portion of the stone retrieval suction device of Fig. 6 after the object disposed in a patient's kidney has been relocated.
Fig. 8 is an illustrative cross sectional view of the distal portion of the stone retrieval suction device of Fig. 7 after the object disposed in a patient's kidney has been released.
Fig. 9 is an illustrative cross sectional view of the distal portion of the stone retrieval suction device of Fig. 7 removing the object from the patient's kidney.
Fig. 10A is an illustrative diagram of a stone retrieval suction device including a mesh, according to another embodiment of the invention. Fig. 10B is an illustrative cross sectional view of the stone retrieval suction device of Fig.
10A, taken along line B-B in Fig.10 A, according to one embodiment of the invention.
Fig. 10C is an illustrative cross sectional view of the stone retrieval suction device of Fig. 10A, taken along line B-B in Fig.10 A, according to another embodiment of the invention.
Fig. 10D is an illustrative cross sectional view of the stone retrieval suction device of Fig. 10A, taken along line B-B in Fig.10 A, according to still another embodiment of the invention. Fig. 11 A is an illustrative diagram of a stone retrieval suction device including a coil, according to one embodiment of the invention.
Fig. 1 IB is an illustrative cross sectional view of the stone retrieval suction device of Fig. 11 A, taken along line B-B in Fig. 11 A, according to one embodiment of the invention. Fig. 11C is an illustrative cross sectional view of the stone retrieval suction device of Fig.
11 A, taken along line B-B in Fig. 11 A, according to another embodiment of the invention.
Fig. 1 ID is an illustrative cross sectional view of the stone retrieval suction device of Fig. 11 A, taken along line B-B in Fig. 11 A, according to still another embodiment of the invention.
Fig. 12 is an illustrative cross sectional view of a tapered tip coupled to a distal portion of the stone retrieval suction device, according to one embodiment to the invention.
Fig. 13 A is an illustrative cross sectional view of a tip including a concave portion coupled to a distal portion of the stone retrieval suction device, according to another embodiment to the invention.
Fig. 13B is an illustrative cross sectional view of a tip including a concave portion coupled to a distal portion of the stone retrieval suction device, according to yet another embodiment to the invention. Fig. 14 is an illustrative cross sectional view of a tip including a plurality of arms extending radially outward coupled to a distal portion of the stone retrieval suction device, according to still another embodiment to the invention.
Fig. 15 is an illustrative cross sectional view of a tapered tip coupled to a distal portion of the stone retrieval suction device including a mesh disposed on the inner surface of a wall of the elongated member, according to one embodiment to the invention.
Fig. 16 is an illustrative cross sectional view of a tip including a concave portion coupled to a distal portion of the stone retrieval suction device including a mesh disposed in a wall of the elongated member, according to another embodiment to the invention.
Fig. 17 is an illustrative cross sectional view of a tip including a plurality of arms extending radially outward coupled to a distal portion of the stone retrieval suction device including a mesh disposed on the outer surface of a wall of the elongated member, according to still another embodiment to the invention.
Fig. 18 is an illustrative cross sectional view of a tapered tip coupled to a distal portion of the stone retrieval suction device including a coil disposed on the inner surface of a wall of the elongated member, according to one embodiment to the invention.
Fig. 19 is an illustrative cross sectional view of a tip including a concave portion coupled to a distal portion of the stone retrieval suction device including a coil disposed in a wall of the elongated member, according to another embodiment to the invention.
Fig. 20 is an illustrative cross sectional view of a tip including a plurality of arms extending radially outward coupled to a distal portion of the stone retrieval suction device including a coil disposed on the outer surface of a wall of the elongated member, according to still another embodiment to the invention.
Fig. 21 is an illustrative diagram of the stone retrieval suction device including a handle disposed in the channel of the flexible ureteroscope and extending out of a distal end of the ureteroscope and into the patient's kidney.
Figs. 22 A and 22B are illustrative cross sectional diagrams of a handle of the stone retrieval suction device, according to one embodiment of the invention.
Figs. 23 A and 23B are illustrative cross sectional diagrams of a handle of the stone retrieval suction device, according to another embodiment of the invention. Fig. 24 A is an illustrative diagram of a handle of the stone retrieval suction device, according to still another embodiment of the invention. Figs. 24B and 24C are illustrative cross sectional diagrams of the handle shown in Fig.
24A.
Description Objects, such as kidney stones (calculi) and other natural or foreign materials, can become trapped in a patient's urinary system. These objects can be disposed in areas of the urinary system that are easily accessed by currently available stone retrieval devices. These objects can also be disposed in areas of the urinary system, such as embedded in tissue or located in a lower calyx of a patient's kidney, for example, which are not easily accessed by currently available stone retrieval devices. The present invention relates to medical devices and related methods for accessing and then retaining, relocating, and/or removing an object disposed in an internal area of a patient's body (such as the urinary system) which is difficult or impossible to access with currently available retrieval devices or methods.
Referring to Figs. 1A and IB, in one embodiment, the stone retrieval suction device 100 includes an elongated member 102 which defines a suction passageway 110 extending longitudinally therethrough. The elongated member 102 is designed to be placed in a channel of a flexible ureteroscope and has an outside diameter of between two and three french. The elongated member 102 bends with the flexible ureteroscope when placed within the channel of the flexible ureteroscope. The suction passageway 110 resists collapsing when suction is provided through the suction passageway 110 by a vacuum source. For example, the elongated member 102 can be reinforced to resist collapse of the suction passageway 110 when suction is provided through the suction passageway 110. Materials that can be used for the elongated member 102 include, but are not limited to, biocompatible plastic, biocompatible rubber, and biocompatible polyurethane. In one embodiment, the bendable elongated member 102 is formed of Pebax, PTFE, or Polyuethane. The elongated member further includes a proximal portion 108. The proximal portion 108 is in communication with the vacuum source to provide suction through the suction passageway 110. In one embodiment, the proximal portion 108 can also include a luer connector 104. The luer connector 104 is used to connect the elongated member 102 to the vacuum source. The elongated member further includes a distal portion 106 for making contact with an object disposed in a patient, such as a kidney stone. The distal portion 106 retains the object in contact with the distal portion 106 when suction is provided through the suction passageway 110. In one embodiment, the distal portion 106 can also include a tapered tip 112 which is used to contact the object. In other embodiments, the distal portion 106 can include other types of tips which are discussed in further detail below. In some embodiments, the distal portion 106 can also include a radiopaque material which facilitates easily locating the elongated member 102 with a fluoroscope when the elongated member 102 is disposed within the patient. The radiopaque material can be painted on, and/or embedded in, the elongated member 102. The radiopaque material can also be a band painted on, embedded in, and/or wrapped around the distal portion 106 of the elongated member 102. In some embodiments, the radiopaque material can be tungsten filled ink, bismuth subcarbonate, or barium sulfate. In other embodiments, the radiopaque material can be a platinum or tantalum metal band.
The elongated member 102 can be extruded from any of the materials previously described using known extrusion techniques. The luer connector 104 can be made of molded plastic or metal, such as stainless steel. The tapered tip 112 can also be made of molded plastic or metal.
Referring to Figs. 2-4A, in operation, a user (e.g. a doctor or other medical personnel) inserts a distal end 216 of a flexible ureteroscope 214 into the patient's urethra 202. The user advances the flexible ureteroscope 214 so that the distal end 216 passes into and through the urinary bladder 204, into and through the ureter 206, and into the kidney 208. The user positions the distal end 216 of the flexible ureteroscope 214 within the patient's kidney 208 by manipulating positioning knobs 230, 232. The knob 230 moves the distal end 216 vertically and the knob 232 moves the distal end 216 horizontally. By manipulating the positioning knobs 230, 232, and viewing the kidney's 208 interior with an eyepiece 224, the user can position a distal channel opening 228 of the flexible ureteroscope 214 proximate an object, such as a kidney stone, that is disposed in the patient's kidney 208.
The user then connects the luer connector 104 to a regulator 210 which, in turn, is connected to a vacuum source 212. The vacuum source 212 provides suction through the suction passageway 110 and the regulator 210 allows the user to vary the suction provided by the vacuum source 212 by adjusting a suction adjustment dial 222. In this embodiment, the vacuum source 212 is located near the patient. In another embodiment, the vacuum source 212 can be located remotely and is discussed in further detail below.
As previously described, the elongated member 102 includes a material that enables the elongated member 102 to bend with the flexible ureteroscope 214. After the user has inserted the flexible ureteroscope 214 into the patient, the user then inserts the distal portion 106 of the elongated member 102 into a proximal channel opening 226 at a proximal end 218 of the flexible ureteroscope 214. The user then advances the distal portion 106 through the channel 502 (shown in Fig. 5) of the flexible ureteroscope 214 until the tapered tip 112 extends out of the distal channel opening 228 at the distal end 216 of the flexible ureteroscope 214.
Referring to Fig. 4B, in another embodiment, the elongated member 102 can be connected to a remotely located vacuum source 212 (such as a vacuum source located on a wall). In this embodiment, the elongated member 102 communicates with the regulator 210 through an extension tube 402. The luer connector 104 of the elongated member 102 is mated to a first luer connector 406 disposed on a proximal end 408 of the extension tube 402. A second luer connector 404 disposed on a distal end 410 of the extension tube is connected to the regulator 210.
Referring to Figs 4 A, 5, and 6, after the elongated member 102 is advanced through the channel 502 so that the tapered tip 112 extends out of the channel 502 through the distal channel opening 218 and is proximate to a kidney stone 504, the user switches on the suction (using switch 220). The suction pulls the kidney stone 504 in a direction (indicated by arrow 506) toward the tapered tip 112. Eventually, the kidney stone 504 makes contact with the tapered tip 112 and is held in contact with the tapered tip 112 by the continuous suction through the suction passageway 110 (shown in Fig. IB). If the kidney stone 504 is embedded in tissue, the user moves the tapered tip 112 toward the embedded kidney stone 504. After the tapered tip 112 makes contact with the embedded kidney stone 504, the suction through the suction passageway 110 retains the kidney stone 504 in contact with the tapered tip 112. The user can then pull the kidney stone 504 free by retracting the distal portion 106 of the elongated member 102 into the channel 502.
This device and method enables the user to capture and retain the kidney stone 504 even when the kidney stone 504 is embedded in tissue or located in a portion of the patient's body that is difficult or impossible to access with typical basket and/or grabber stone retrieval devices. Referring to Figs. 7-8, after contacting and retaining the kidney stone 504, the user can reposition the distal end 216 of the flexible ureteroscope 214 with the distal portion 106 of the elongated member 102 still extending beyond the distal channel opening 218 and retaining the kidney stone 504 in contact with the tapered tip 112. The purpose of repositioning the distal end 216 of the flexible ureteroscope 214 is to move the kidney stone 504 to an area in the kidney that is easily accessed by typical stone retrieval baskets or grabbers. After the user relocates the kidney stone 504, the user can release the kidney stone 504 by discontinuing the suction and retracting the distal portion 106 of the elongated member 102 through the distal channel opening 218. After the kidney stone 504 is released, the user can use any of a variety of existing stone retrieval devices to capture and remove the kidney stone 504 from the patient's urinary system. If the kidney stone 504 is too large to remove, the user can employ any of a variety stone destruction devices (such as laser or vibration devices, for example) to break the kidney stone 504 into smaller pieces. If the kidney stone 504 has a diameter smaller than the diameter of the channel 502 of the flexible ureteroscope 214, the user can remove the kidney stone 504 from the patient by pulling the kidney stone 504 through the channel 502 of the flexible ureteroscope 214. Referring to Figs. 10A-D and 15-17, in another embodiment, the stone retrieval suction device 100 includes a mesh 1002 which extends longitudinally and circumferentially along the elongated member 102. The mesh 1002 can be made of stainless steel and/or other material(s). The mesh 1002 can be, for example, formed by two or more cords that are woven together to form the mesh 1002 with each cord having one or more, for example three or more, component strands. Each of the strands could be thin wire or metal or a metal alloy, for example. The mesh 1002 reinforces the elongated member 102 so that the elongated member 102 does not collapse when suction is provided through the suction passageway 110 by the vacuum source 212 (Fig. 4 A). The cords of the mesh 1002 can be either spaced closely together to form a dense mesh or spaced far apart to form a sparse or open mesh. The mesh 1002 can be affixed to an inner surface 1006 (Figs. 10C and 15) or an outer surface 1004 (Figs. 10B and 17) of the elongated member 102. The mesh 1002 can also be embedded between the inner surface 1006 and the outer surface 1004 of the elongated member 102 (Figs. 10D and 16).
Referring to Figs. 11 A-D and 18-20, in still another embodiment, the stone retrieval suction device 100 includes a coil 1102 which extends circumferentially and longitudinally along the elongated member 102. The coil 1102 can be made of stainless steel and/or other material(s). The coil 1102 can be, for example, formed by a cord with the cord having one or more, for example three or more, component strands. Each of the strands could be thin wire or metal or a metal alloy, for example. The coil 1102 reinforces the elongated member 102 so that the elongated member 102 does not collapse when suction is provided through the suction passageway 110 by a vacuum source. The coil 1102 can be tightly wound so that the individual coils are spaced closely together to form a dense coil or the coil 1102 an be loosely wound so that the individual coils are spaced far apart to form an open coil. As with the mesh 1002, the coil 1102 can be affixed to the inner surface 1006 (Figs. 11C and 18) or the outer surface 1004 (Figs. 1 IB and 20) of the elongated member 102. The coil 1102 can also be embedded between the inner surface 1006 and the outer surface 1004 of the elongated member 102 (Figs. 1 ID and Referring to Fig. 12, the distal portion 106 of the elongated member 102 can include a tapered tip 112. The tapered tip 112 can be made of molded plastic or metal, for example, although other materials or combinations of materials are possible. In another embodiment shown in Fig. 13A, the distal portion 106 can include a tip 1302 with a concave portion 1304. The concave portion 1304 is used to contact an object disposed in a patient's urinary system and retain the object in contact with the concave portion 1304 when suction is provided through the suction passageway 110. In still another embodiment shown in Fig. 13B, the distal portion 106 can include a concave portion 1306 with a tapered tip 1308 within the concave portion 1306. The concave portion 1306 is used to keep surrounding tissue away from the suction in the tapered tip 1308 when the tapered tip 1308 contacts an object. In yet another embodiment shown in Fig. 14, the distal portion 106 can include a tip 1402 which includes a plurality of members 1404. The plurality of members 1404 extend radially outward from the tip 1402 and prevent tissue (proximate to an object being contacted) from being pulled into the suction passageway 110. The tips 1302, 1402 can also be made of molded plastic or metal.
Referring to Figs. 21, 22A, and 22B, in another embodiment, the suction retrieval device 100 can include a handle 2102. The handle 2102 includes a suction button 2104 which is used to enable and disable the suction in the suction passageway 110 by uncrimping and crimping a portion of the elongated member 102 disposed in the handle 2102. When the suction button 2104 is not pressed (default position), the suction button 2104 is positioned such that a rigid member 2108 presses against the suction tube 302 thereby crimping the elongated member 102 and disabling the suction in the suction passageway 110.
When the suction button 2104 is pressed (in the direction indicated by arrow 2106), the suction button 2104 is positioned such that the rigid member 2108 no longer crimps the elongated member 102, thereby enabling suction in the suction passageway 110. As long as the suction button 2104 is pressed, the suction in the suction passageway 110 is enabled. As soon as the suction button 2104 is released, the suction in the suction passageway 110 is disabled. In operation, after inserting the flexible ureteroscope 214 into the patient's urinary system, the user connects the luer connector 104 to the regulator 210 and then guides the elongated member 102 into and through the channel of the flexible ureteroscope 214. The user then turns on the vacuum source 212 with the switch 220 and adjusts the suction with suction adjustment knob 222 on the regulator 210. The user positions the elongated member 102 proximate to an object disposed in the patient's urinary system by the method previously described, and then presses the suction button 2104 on the handle 2102 to engage the suction (by uncrimping the portion of elongated member 102 disposed in the handle 2102). After the object is captured and relocated to a new position or removed from the patient, the user releases the button 2104 to disengage the suction (by crimping the portion of elongated member 102 disposed in the handle 2102) thereby releasing the object.
Referring to Figs 23 A and 23B, in still another embodiment, the suction retrieval device 100 can include a handle 2302. The handle 2302 includes a suction port 2306 which is used to enable and disable the suction in the distal portion 106 of the suction passageway 110. The suction port 2306 is an opening to the suction passageway 110 and allows outside air to be sucked into the suction passageway 110 by the vacuum source (as indicated by arrows 2304) when left open or uncovered. As a result, the suction in the distal portion 106 of the suction passageway 110 is significantly reduced or disabled entirely. When the suction port 2306 is covered, by a user's finger 2308 for example, the suction port 2306 is sealed and the suction in the distal portion 106 of the suction passageway 110 is restored.
Referring to Figs. 24A-C, in yet another embodiment, the suction retrieval device 100 can include a handle 2402. The handle 2402 includes a rotatable valve 2404 which is used to enable and disable the suction in the distal portion 106 of the suction passageway 110 by redirecting the suction from the vacuum source. The valve 2404 includes a handle 2412 (for rotating the valve) and two perpendicular suction tubes 2416, 2414. When the valve 2404 is rotated to an open position (Fig. 24B), a suction port 2406 is put in communication with the vacuum source via the suction tubes 2414, 2416. Outside air is pulled through the suction port 2406, through the suction tubes 2414, 2416, and into the suction passageway 100 by a vacuum source as indicated by arrow 2408. The suction in the distal portion 106 of the suction passageway 110 is thereby disabled. When the valve 2404 is rotated to a closed position (Fig. 24C), the suction port 2406 is sealed and the distal portion 106 of the suction passageway 110 is put in communication with the vacuum source via suction tube 2414. The suction in the suction passageway 110 is thereby enabled as indicated by arrows 2410.
Variations, modifications, and other implementations of what is described herein may occur to those of ordinary skill in the art without departing from the spirit and scope of the invention. Accordingly, the invention is not to be defined only by the preceding illustrative description. What is claimed is:

Claims

Claims
1. A medical device, comprising: an elongated member for placement in a channel of a flexible ureteroscope, the elongated member defining a suction passageway extending longitudinally therethrough, the elongated member bending with the flexible ureteroscope when the elongated member is placed within the channel of the flexible ureteroscope, the suction passageway resists collapsing when suction is provided through the suction passageway by a vacuum source, the elongated member comprising: a proximal portion for communicating with the vacuum source to provide the suction through the suction passageway; and a distal portion for contacting an object and retaining the object in contact with the distal portion when the suction is provided through the suction passageway.
2. The medical device of claim 1 wherein the distal portion comprises a tapered tip.
3. The medical device of claim 1 wherein the distal portion comprises a tip comprising a concave portion for contacting the object and retaining the object in contact with the concave portion when the suction is provided through the suction passageway.
4. The medical device of claim 1 wherein the distal portion further comprises a tip comprising a plurality of members extending radially outward from the tip to prevent tissue proximate the object from entering the suction passageway when the suction is provided through the suction passageway.
5. The medical device of claim 1 wherein the distal portion further comprises a tip comprising a concave portion to prevent tissue proximate the object from entering the suction passageway when the suction is provided through the suction passageway.
6. The medical device of claim 1 wherein the elongated member further comprises a mesh to reinforce the elongated member and resist collapse of the suction passageway when the suction is provided through the suction passageway.
7. The medical device of claim 6 wherein the mesh extends longitudinally and circumferentially along the elongated member.
8. The medical device of claim 6 wherein the mesh comprises stainless steel.
9. The medical device of claim 1 wherein the elongated member further comprises a coil extending longitudinally and circumferentially for reinforcing the elongated member and resisting collapse of the suction passageway when the suction is provided through the suction passageway.
10. The medical device of claim 1 wherein the proximal portion further comprises a luer connector.
11. The medical device of claim 1 wherein the proximal portion communicates with a regulator for regulating the suction through the suction passageway.
12. The medical device of claim 1 wherein the elongated member comprises a biocompatible plastic.
13. The medical device of claim 1 wherein the elongated member comprises a biocompatible polyurethane.
14. The medical device of claim 1 wherein the elongated member comprises a biocompatible rubber.
15. The medical device of claim 1 wherein the elongated member has an outside diameter of between two and three french.
16. The medical device of claim 1 wherein the proximal portion further comprises a handle.
17. The medical device of claim 16 wherein the handle comprises a switch for selectively enabling and disabling the suction through the suction passageway when the proximal portion is in communication with the vacuum source.
18. The medical device of claim 1 wherein the distal portion comprises a radiopaque material.
19. A method of contacting and moving an obj ect disposed in a patient, comprising: providing a vacuum source; providing a flexible ureteroscope and introducing the ureteroscope into the patient; providing a medical device comprising: an elongated member for placement in a channel of the flexible ureteroscope, the elongated member defining a suction passageway extending longitudinally therethrough, the elongated member bending with the flexible ureteroscope when the elongated member is placed within the channel of the flexible ureteroscope, the suction passageway resists collapsing when suction is provided through the suction passageway by the vacuum source, the elongated member comprising: a proximal portion for communicating with the vacuum source to provide the suction through the suction passageway; and a distal portion for contacting an object and retaining the object in contact with the distal portion when the suction is provided through the suction passageway; introducing the medical device into the channel of the flexible ureteroscope; positioning the flexible ureteroscope to allow the distal portion to contact the object; providing suction through the suction passageway and retaining the object in contact with the distal portion; and moving the retained object from a first location in the patient to a second location.
20. The method of claim 19 wherein moving the retained object to the second location comprises moving the retained object outside of the patient.
21. The method of claim 19 wherein moving the retained object to the second location comprises moving the retained object to another location in the patient.
PCT/US2003/023078 2002-07-25 2003-07-24 Medical suction device, particularly adapted for removing kidney stone WO2004010879A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002493095A CA2493095A1 (en) 2002-07-25 2003-07-24 Medical suction device, particularly adapted for removing kidney stone
AU2003256716A AU2003256716A1 (en) 2002-07-25 2003-07-24 Medical suction device, particularly adapted for removing kidney stone
EP03771759A EP1524944A1 (en) 2002-07-25 2003-07-24 Medical suction device, particularly adapted for removing kidney stone

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/202,978 US20040019358A1 (en) 2002-07-25 2002-07-25 Medical device
US10/202,978 2002-07-25

Publications (1)

Publication Number Publication Date
WO2004010879A1 true WO2004010879A1 (en) 2004-02-05

Family

ID=30769960

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/023078 WO2004010879A1 (en) 2002-07-25 2003-07-24 Medical suction device, particularly adapted for removing kidney stone

Country Status (5)

Country Link
US (2) US20040019358A1 (en)
EP (1) EP1524944A1 (en)
AU (1) AU2003256716A1 (en)
CA (1) CA2493095A1 (en)
WO (1) WO2004010879A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018098477A1 (en) * 2016-11-28 2018-05-31 University Of Florida Research Foundation, Incorporated Urologic sheath with photodiode and coaxial grabber for suctioning of larger kidney stones

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005039390A2 (en) * 2003-10-20 2005-05-06 Arthrocare Corporation Electrosurgical method and apparatus for removing tissue within a bone body
US7907991B2 (en) * 2005-03-02 2011-03-15 C. R. Bard, Inc. System and method for marking body cavities
US8211088B2 (en) * 2005-10-14 2012-07-03 Boston Scientific Scimed, Inc. Catheter with controlled lumen recovery
US7879034B2 (en) 2006-03-02 2011-02-01 Arthrocare Corporation Internally located return electrode electrosurgical apparatus, system and method
JP5185668B2 (en) * 2008-03-26 2013-04-17 東京医研株式会社 Hemostatic device
DE102008037260A1 (en) * 2008-08-11 2010-02-18 POLYDIAGNOST Entwicklungs-, Produktions-, Vertriebs- und Servicegesellschaft für medizinelektronische Diagnostik- und Therapiegeräte mbH Method of removing kidney stones and endoscope suitable for this procedure
US20100114110A1 (en) * 2008-10-30 2010-05-06 Arthrocare Corporation Intervertebral disc access assembly
US8979838B2 (en) 2010-05-24 2015-03-17 Arthrocare Corporation Symmetric switching electrode method and related system
CN102293675A (en) * 2011-09-02 2011-12-28 王宝根 Vacuum stone-taking device
US8858569B2 (en) * 2012-02-16 2014-10-14 Shaw P. Wan Stone retrieval device
EP2967608B1 (en) * 2013-03-14 2018-11-14 The General Hospital Corporation System for guided removal from an in vivo subject
US10398541B2 (en) 2013-03-14 2019-09-03 The General Hospital Corporation System and method for use of flexible anti-reflux ureteral stent
US20170303941A1 (en) * 2013-03-14 2017-10-26 The General Hospital Corporation System and method for guided removal from an in vivo subject
US10406276B2 (en) 2013-03-14 2019-09-10 The General Hospital Corporation System and method for guided removal from an in vivo subject
CA2905589A1 (en) * 2013-03-15 2014-09-18 Baylis Medical Company Inc. Electrosurgical device having a distal aperture
CA3220441A1 (en) * 2013-03-15 2015-09-17 Boston Scientific Medical Device Limited Electrosurgical device having a distal aperture
RU2549666C1 (en) * 2014-01-17 2015-04-27 Алексей Алексеевич Подойницын Method for vacuum aspiration in transurethral nephrolithotripsy
US9615842B2 (en) * 2014-03-21 2017-04-11 Terumo Kabushiki Kaisha Calculus retrieving/removing device and method
US9610087B2 (en) * 2014-03-21 2017-04-04 Terumo Kabushiki Kaisha Calculus retrieving/removing device and method
US9517080B2 (en) * 2014-03-21 2016-12-13 Terumo Kabushiki Kaisha Calculus retrieving/removing device and method
US9636123B2 (en) * 2014-03-21 2017-05-02 Terumo Kabushiki Kaisha Calculus retrieving/removing device and method
US9539014B2 (en) * 2014-03-21 2017-01-10 Terumo Kabushiki Kaisha Calculus removing/retrieving device and method
WO2015164455A1 (en) * 2014-04-23 2015-10-29 Gyrus Acmi, Inc. (D.B.A Olympus Surgical Technologies America) Stone fragment suction device
US20160089172A1 (en) * 2014-09-30 2016-03-31 Boston Scientific Scimed, Inc. Devices and methods for applying suction
US10485563B2 (en) * 2015-03-27 2019-11-26 Terumo Kabushiki Kaisha Calculus/calculi retrieving device and method
US9636127B2 (en) * 2015-03-31 2017-05-02 Terumo Kabushiki Kaisha Method for retrieving objects from a living body
US9662097B2 (en) * 2015-03-31 2017-05-30 Terumo Kabushiki Kaisha Method for retrieving objects from a living body and expanding a narrowed region in the living body
CA2980685A1 (en) * 2015-04-01 2016-10-06 Artack Medical (2013) Ltd. Articulating medical device
US10918827B2 (en) 2015-07-20 2021-02-16 Strataca Systems Limited Catheter device and method for inducing negative pressure in a patient's bladder
US11040172B2 (en) 2015-07-20 2021-06-22 Strataca Systems Limited Ureteral and bladder catheters and methods of inducing negative pressure to increase renal perfusion
US11541205B2 (en) 2015-07-20 2023-01-03 Roivios Limited Coated urinary catheter or ureteral stent and method
US10493232B2 (en) 2015-07-20 2019-12-03 Strataca Systems Limited Ureteral catheters, bladder catheters, systems, kits and methods for inducing negative pressure to increase renal function
US10926062B2 (en) 2015-07-20 2021-02-23 Strataca Systems Limited Ureteral and bladder catheters and methods of inducing negative pressure to increase renal perfusion
US10512713B2 (en) 2015-07-20 2019-12-24 Strataca Systems Limited Method of removing excess fluid from a patient with hemodilution
MX2018000823A (en) 2015-07-20 2018-05-15 Ureteral and bladder catheters and methods for inducing negative pressure to increase renal perfusion.
US10368885B2 (en) * 2016-03-04 2019-08-06 Well Lead Co., Ltd. Suction evacuation sheath
ITUA20163838A1 (en) * 2016-05-26 2017-11-26 Guido Casarotto MINI-INVASIVE DEVICE FOR ENDOUROLOGICAL TREATMENTS
JP7208237B2 (en) * 2017-12-08 2023-01-18 オーリス ヘルス インコーポレイテッド Systems and medical devices for performing medical procedures
WO2019152727A1 (en) 2018-02-02 2019-08-08 Kalera Medical, Inc. Devices and methods for minimally invasive kidney stone removal by combined aspiration and irrigation
US20240074770A1 (en) * 2022-09-01 2024-03-07 Endovascular Engineering, Inc. Systems, devices, and methods for aspiration, including expandable structures and rotatable shafts

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243040A (en) * 1979-09-17 1981-01-06 Beecher William H Extracting device for removing objects from human body passages
US4672953A (en) * 1985-06-06 1987-06-16 Divito Enrico E Oral hygiene apparatus
EP0958787A1 (en) * 1998-05-12 1999-11-24 Kim, Han-Joon, c/o KIM Orthodontic Clinic Tongue cleaning device
WO2000012011A1 (en) * 1998-08-27 2000-03-09 Shoshan Hendler Apparatus and method for acquisition and retrieval of resected biological specimens
US6197014B1 (en) * 1996-05-30 2001-03-06 Target Therapeutics, Inc. Kink-resistant braided catheter with distal side holes

Family Cites Families (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2711586A (en) * 1953-02-16 1955-06-28 James R Groves Vacuum ejector for dental debris
US3958566A (en) * 1973-08-27 1976-05-25 Olympus Optical Co., Ltd. Suction control device for an endoscope
US3908637A (en) * 1974-04-22 1975-09-30 Louis W Doroshow Rigid urethral instrument
SE383959B (en) * 1974-10-18 1976-04-12 Bonnier Hospital Ind Ab DEVICE FOR AN OPERATIONAL SUCTION
US4030073A (en) * 1975-11-05 1977-06-14 Digital Equipment Corporation Initialization circuit for establishing initial operation of a digital computer
US4146019A (en) * 1976-09-30 1979-03-27 University Of Southern California Multichannel endoscope
US4198958A (en) * 1977-06-01 1980-04-22 Olympus Optical Co., Ltd. Flexible cap and instrument seal for a suction control device in an endoscope
US4270525A (en) * 1978-04-17 1981-06-02 Olympus Optical Co., Ltd. Suction control device for an endoscope
JPS5545468A (en) * 1978-09-29 1980-03-31 Olympus Optical Co Connector for endoscope
JPH0115361Y2 (en) * 1979-02-10 1989-05-09
JPS6015523Y2 (en) * 1979-10-06 1985-05-16 株式会社 メドス研究所 Endoscope suction operation device
US4469090A (en) * 1980-12-19 1984-09-04 Olympus Optical Co., Ltd. Suction control device for an endoscope
JPS57110226A (en) * 1980-12-26 1982-07-09 Olympus Optical Co Air and liquid sending and sucking apparatus of endoscope
EP0075188B1 (en) * 1981-09-17 1987-11-19 Olympus Optical Co., Ltd. A suction device for an endoscope
US4759348A (en) * 1981-09-28 1988-07-26 Cawood Charles David Endoscope assembly and surgical instrument for use therewith
US4430073A (en) * 1982-05-03 1984-02-07 Bemis Manufacturing Company Surgical suction probe with reversible valve
US4468216A (en) * 1982-05-20 1984-08-28 Rudolph Muto Irrigation suction catheter
US4469100A (en) * 1983-03-14 1984-09-04 Hardwick Charles W Intussuscepting balloon catheter for stone extraction
JPS6023001U (en) * 1983-07-18 1985-02-16 オリンパス光学工業株式会社 Endoscope suction control device
GB2149884B (en) * 1983-11-12 1987-02-11 Warner Lambert Tech Valve bodies for endoscopes
DE3504292C1 (en) * 1985-02-08 1986-07-24 Richard Wolf Gmbh, 7134 Knittlingen Instrument for endoscopic interventions, especially for percutaneous gallstone removal or gallbladder surgery
US4807626A (en) * 1985-02-14 1989-02-28 Mcgirr Douglas B Stone extractor and method
US4643197A (en) * 1985-05-10 1987-02-17 E-Z-Em, Inc. Suction collection and drainage apparatus
DE3715418A1 (en) * 1986-05-08 1987-11-12 Olympus Optical Co LITHOTOM
US4813926A (en) * 1986-07-02 1989-03-21 Sherwood Medical Company Medical suction device with air vent and fixed restrictor
JPS63143025A (en) * 1986-12-04 1988-06-15 オリンパス光学工業株式会社 Suction controller of endoscope
JPS63164935A (en) * 1986-12-27 1988-07-08 株式会社東芝 Suction apparatus of endoscope
US4832048A (en) * 1987-10-29 1989-05-23 Cordis Corporation Suction ablation catheter
US5057080A (en) * 1988-04-08 1991-10-15 Asahi Kogaku Kogyo Kabushiki Kaisha Medical suction tube and suction control apparatus for endoscope
US5226885A (en) * 1988-04-08 1993-07-13 Asahi Kogaku Kogyo Kabushiki Kaisha Medical suction tube and suction control apparatus for endoscope
US4878900A (en) * 1988-07-27 1989-11-07 Sundt Thoralf M Surgical probe and suction device
JPH0255064A (en) * 1988-08-03 1990-02-23 Toa O Skin removal for throm bus in blood vessel using catheter and throm bus removing system in blood vessel using catheter
GB8822492D0 (en) * 1988-09-24 1988-10-26 Considine J Apparatus for removing tumours from hollow organs of body
US4899733A (en) * 1988-12-19 1990-02-13 Blackstone Ultrasonic, Inc. Device and technique for transurethral ultrasonic lithotripsy using a flexible ureteroscope
JPH0790017B2 (en) * 1989-04-20 1995-10-04 株式会社東芝 Endoscope device
US5269785A (en) * 1990-06-28 1993-12-14 Bonutti Peter M Apparatus and method for tissue removal
US5295830A (en) * 1990-10-03 1994-03-22 James Shen Aseptic dental valves and instruments
US5199417A (en) * 1990-12-21 1993-04-06 Circon Corporation Endoscope having a deflectable distal section and a semi-rigid proximal section
EP0566694A1 (en) * 1991-01-09 1993-10-27 EndoMedix Corporation Method and device for intracorporeal liquidization of tissue and/or intracorporeal fragmentation of calculi during endoscopic surgical procedures
US5257773A (en) * 1991-01-25 1993-11-02 Olympus Optical Co., Ltd. Endoscope suction operating apparatus
US5127393A (en) * 1991-05-28 1992-07-07 Medilase, Inc. Flexible endoscope with rigid introducer
US5222949A (en) * 1991-07-23 1993-06-29 Intermed, Inc. Flexible, noncollapsible catheter tube with hard and soft regions
US5129910A (en) * 1991-07-26 1992-07-14 The Regents Of The University Of California Stone expulsion stent
JPH0549596A (en) * 1991-08-21 1993-03-02 Olympus Optical Co Ltd Suction controller for endoscope
US5190050A (en) * 1991-11-08 1993-03-02 Electro-Catheter Corporation Tip deflectable steerable catheter
US5244459A (en) * 1992-01-28 1993-09-14 Hill Raymond R Suction irrigator endoscope
KR930019950A (en) * 1992-03-18 1993-10-19 리테르 클라우스 Reinforced grid mat for reinforced concrete
US5843028A (en) * 1992-05-11 1998-12-01 Medical Innovations Corporation Multi-lumen endoscopic catheter
NL9300626A (en) * 1993-04-13 1994-11-01 Cordis Europ Hydrodynamic suction catheter.
US5392764A (en) * 1993-06-18 1995-02-28 Swanson; Larry S. Gynecological speculum
US5476450A (en) * 1993-11-04 1995-12-19 Ruggio; Joseph M. Apparatus and method for aspirating intravascular, pulmonary and cardiac obstructions
DE4405656C2 (en) * 1994-02-22 1998-12-10 Ferton Holding Body stone removal device
US5730742A (en) * 1994-08-04 1998-03-24 Alto Development Corporation Inclined, flared, thermally-insulated, anti-clog tip for electrocautery suction tubes
US5569219A (en) * 1994-09-13 1996-10-29 Hakki; A-Hamid Collapsible catheter
US5938645A (en) * 1995-05-24 1999-08-17 Boston Scientific Corporation Northwest Technology Center Inc. Percutaneous aspiration catheter system
US5725478A (en) * 1996-03-14 1998-03-10 Saad; Saad A. Methods and apparatus for providing suction and/or irrigation in a rigid endoscope while maintaining visual contact with a target area through the endoscope
US5879342A (en) * 1996-10-21 1999-03-09 Kelley; Gregory S. Flexible and reinforced tubing
US5766194A (en) * 1996-12-23 1998-06-16 Georgia Skin And Cancer Clinic, Pc Surgical apparatus for tissue removal
US5813856A (en) * 1997-01-31 1998-09-29 Lee; Wangkun Dental suction mirror
US5891114A (en) * 1997-09-30 1999-04-06 Target Therapeutics, Inc. Soft-tip high performance braided catheter
US6095971A (en) * 1997-10-22 2000-08-01 Fuji Photo Optical Co., Ltd. Endoscope fluid controller
US5975897A (en) * 1998-11-30 1999-11-02 Tri-State Hospital Supply Corporation Oral suctioning swab
US6280415B1 (en) * 1999-03-10 2001-08-28 W. Dudley Johnson Tissue traction device
US7278972B2 (en) * 2002-01-24 2007-10-09 Worldwide Medical Technologies, Llc Combined bone marrow aspiration and core biopsy device
US7309334B2 (en) * 2002-07-23 2007-12-18 Von Hoffmann Gerard Intracranial aspiration catheter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243040A (en) * 1979-09-17 1981-01-06 Beecher William H Extracting device for removing objects from human body passages
US4672953A (en) * 1985-06-06 1987-06-16 Divito Enrico E Oral hygiene apparatus
US6197014B1 (en) * 1996-05-30 2001-03-06 Target Therapeutics, Inc. Kink-resistant braided catheter with distal side holes
EP0958787A1 (en) * 1998-05-12 1999-11-24 Kim, Han-Joon, c/o KIM Orthodontic Clinic Tongue cleaning device
WO2000012011A1 (en) * 1998-08-27 2000-03-09 Shoshan Hendler Apparatus and method for acquisition and retrieval of resected biological specimens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018098477A1 (en) * 2016-11-28 2018-05-31 University Of Florida Research Foundation, Incorporated Urologic sheath with photodiode and coaxial grabber for suctioning of larger kidney stones

Also Published As

Publication number Publication date
US20040019358A1 (en) 2004-01-29
CA2493095A1 (en) 2004-02-05
AU2003256716A1 (en) 2004-02-16
EP1524944A1 (en) 2005-04-27
US20090198250A1 (en) 2009-08-06
US7883515B2 (en) 2011-02-08

Similar Documents

Publication Publication Date Title
US7883515B2 (en) Medical device
EP0679070B1 (en) Device for retrieving materials from body lumens
US8753351B2 (en) Methods for removing kidney stones from the ureter
US7008434B2 (en) Clot retrieval device
US6174318B1 (en) Basket with one or more moveable legs
US6520968B2 (en) Releasable basket
WO1999053848A1 (en) Surgical retrieval basket with the ability to capture and release material
JP2007522881A (en) Embolization capture sheath
AU2011335890B2 (en) Device for retrieving a body from a tubular structure
JP7189023B2 (en) Minimally invasive instrument for intraurethral procedures
CA2304564C (en) Basket with one or more moveable legs
EP4259253A1 (en) Retrieval system and method
EP1608274B1 (en) Device for manipulating material in a tissue
US20160089172A1 (en) Devices and methods for applying suction
NZ216669A (en) Device for removing urinary calculus
WO2023248224A1 (en) Retrieval catheter
CN117425513A (en) Device and system for removing ureteral stents

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2003256716

Country of ref document: AU

WWE Wipo information: entry into national phase

Ref document number: 2493095

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2003771759

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2003771759

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP