WO1999003417A1 - Catheter guide wire introducing device and method - Google Patents
Catheter guide wire introducing device and method Download PDFInfo
- Publication number
- WO1999003417A1 WO1999003417A1 PCT/US1998/011846 US9811846W WO9903417A1 WO 1999003417 A1 WO1999003417 A1 WO 1999003417A1 US 9811846 W US9811846 W US 9811846W WO 9903417 A1 WO9903417 A1 WO 9903417A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conduit
- guide wire
- fitting
- passageway
- flexible bulb
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0693—Flashback chambers
Definitions
- Catheters for the introduction or removal of fluids may be located in various venous locations and cavities throughout the body for introducing or removing fluids. Such catheterization may be performed by using a single catheter having multiple lumens. A typical example of a multiple lumen catheter is a dual lumen catheter in which one lumen introduces fluids and one lumen removes fluids. Catheterization may also be performed by using separate, single lumen catheters inserted through two different incisions into an area to be catheterized. Such multiple catheter assemblies are known as Tesio catheters.
- the vessel is identified by aspiration using an introducer device, such as a syringe having a long hollow needle in accordance with the Seldinger technique.
- an introducer device such as a syringe having a long hollow needle in accordance with the Seldinger technique.
- a needle is attached to a syringe and inserted under the patient's skin, with the plunger being withdrawn as the needle is inserted.
- the syringe body is removed and a thin guide wire is introduced through the needle lumen and into the interior of the vessel.
- the needle is then removed leaving a portion of the guide wire within the vessel and the remainder projecting outwardly to a point beyond the surface of the patient's skin.
- Other guide wire introducing devices and syringes are also available as discussed below.
- the catheter is inserted by the physician over the guide wire using one of several known techniques.
- each catheter may be inserted in two separate veins.
- each catheter may be inserted in two different locations of the same vein, such as the internal jugular vein or in a single insertion site as described in U.S. Patent 5,624,413.
- the introducer sheath is simply a large, stiff, thin- walled tube which serves as a temporary conduit for the permanent catheter which is being placed.
- the introducer sheath is positioned by placing a dilator device inside of the introducer and passing both the dilator and the introducer together into the vessel over the guide wire.
- the guide wire which is partially within the vessel after insertion as described above, and the dilator are then removed, leaving the thin-walled introducer sheath in place.
- the catheter is placed through the introducer sheath.
- the first step is aspirating the vessel or area to be catheterized prior to introducing the guide wire.
- Arterial blood may spurt from the needle insertion point with considerable force and may contact a physician or other attendant assisting the physician, causing the risk of contamination with blood borne pathogens, such as HIV virus or hepatitis.
- blood borne pathogens such as HIV virus or hepatitis.
- a second problem which is of greater concern to the patient is exposing certain venous blood vessels or other body cavities to atmospheric pressure. Veins are often under negative pressure as blood is being drawn back to the thoracic cavity due to the process of inspiration during the breathing cycle, and a hole in a venous blood vessel could lead to air being drawn into the blood vessel, creating an air embolism.
- catheterization procedures such as a pleural effusion where fluid which collects around the lungs is drained, it is important to have a closed system guide wire introduction device which prevents atmospheric air from entering the thoracic cavity. Breathing movement creates negative pressure in the thoracic cavity which, in combination with the air in the lungs, keeps the lungs expanded. The introduction of air into the thoracic cavity could cause the lungs to partially collapse. It is therefore important during the insertion of a guide wire for catheterization that the risk of introducing air into the thoracic cavity or a vessel be minimized.
- the present invention provides a catheter guide wire introducing device for aspiration of a body part and insertion of a guide wire into the body part.
- the catheter guide wire introducing device comprises a flexible bulb having a first end, a closed second end and an interior cavity.
- a fitting is located on the first end of the bulb.
- the fitting includes an internal chamber and first and second axially aligned passageways in fluid communication with the chamber.
- a third passageway is provided in fluid communication between the chamber and the interior of the cavity of the flexible bulb.
- An introducer needle having first and second ends and a lumen is provided. The first end of the needle is connected to the fitting such that the first passageway is in fluid communication with the lumen.
- a conduit having first and second ends and a passageway extending therethrough is also provided.
- the conduit is axially aligned with the introducer needle.
- the first end of the conduit is connected to the fitting such that the conduit passageway is in fluid communication with the second passageway.
- the conduit and the introducer needle are axially aligned.
- a guide wire penetrable seal assembly is connected to the second end of the conduit in fluid communication with the conduit passageway for preventing the passage of fluid from within the conduit and air from outside the conduit, and for introduction of the guide wire into the conduit.
- the present invention provides a catheter guide wire introducing device for aspiration of a body part and insertion of a guide wire into the body part.
- the catheter guide wire introducing device includes a flexible bulb having a first end, a second end and an interior cavity.
- a fitting is located on the first end of the flexible bulb.
- the fitting includes a chamber.
- An introducer needle having first and second ends and a lumen is provided, with the first end of the needle being connected to the fitting such that the lumen is in fluid communication with the chamber.
- a conduit is provided having first and second ends and a passageway extending therethrough. The conduit is axially aligned with the introducer needle, and the first end of the conduit is connected to the fitting such that the conduit passageway is in fluid communication with the chamber.
- a guide wire penetrable seal assembly is connected to the second end of the conduit in fluid communication with the conduit passageway for preventing the passage of fluid from within the conduit and air from outside the conduit therethrough, and for introduction of a guide wire into the conduit.
- the present invention provides a method for using an introducer device for aspirating and inserting a guide wire into a body part.
- the device includes (i) a flexible bulb having a first end, a closed second end and an interior cavity, (ii) a fitting located on the first end of the bulb, the fitting including an internal chamber and first and second axially aligned passageways in fluid communication with the chamber, and a third passageway in fluid communication between the chamber and the internal cavity of the flexible bulb; (iii) an introducer needle having first and second ends and a lumen, the first end of the needle being connected to the fitting such that the first passageway is in fluid communication with the lumen; (iv) a conduit having first and second ends and a passageway extending therethrough, the conduit being axially aligned with the introducer needle, the first end of the conduit being connected to the fitting such that the conduit passageway is in fluid communication with the second passageway, with the conduit and the introducer needle being axially aligned; and (v) a guide wire penetrable seal assembly connected to the second end of the conduit in fluid communication with the conduit passageway for preventing the passage of fluid from within the
- Fig. 1 is an elevational view showing a catheter guide wire introducing device in accordance with the present invention introducing a guide wire into a body part.
- Fig. 2 is a cross-sectional view of the catheter guide wire introducing device, partially disassembled, taken along lines 2-2 in Fig. 1 ;
- Fig. 3 is a cross-sectional view showing the assembled bi-directional valve taken from the area indicated in Fig. 2;
- Fig. 4 is an elevational view taken along lines 4-4 in Fig. 2;
- Fig. 5 is an enlarged view of the seal and the seal support of the catheter guide wire introducing device shown in Fig. 2; and Fig. 6 is an enlarged perspective view, partially broken away, of the fitting located at the first end of the catheter guide wire introducing device illustrating the flow path into the flexible bulb.
- a catheter guide wire introducing device 10 for aspiration of a body part, such as a blood vessel 12 (shown in phantom lines in Fig. 1), and insertion of a guide wire 14 into the body part 12.
- the guide wire may be straight or have a J-shaped insertion end, as shown in Fig. 1, to prevent the end of the guide wire 14 from catching on the inner wall of the blood vessel 12.
- a flexible bulb 16 having a first end 18, a second end 20 and an interior cavity 22 is provided.
- the flexible bulb 16 is made of a polymeric material, and more preferably of a clear polymeric material such as 1064 PVC.
- a polymeric material such as 1064 PVC.
- other suitable materials which are preferably medical grade, can be used, if desired.
- a fitting 28 is located on the first end 18 of the flexible bulb 16.
- the fitting 28 includes an internal chamber 30, best shown in Fig. 6, and first and second axially aligned passageways 32, 34 in fluid communication with the chamber 30.
- a third passageway 36 is provide in the fitting 28 in fluid communication between the chamber 30 and the interior cavity 22 of the flexible bulb 16.
- the fitting 28 is made of a medical grade polymeric material, such as USP class VI ABS.
- USP class VI ABS polyethylene
- an introducer needle 52 having first and second ends 54, 56 and a lumen 58 is provided.
- the first end 54 of the needle 52 is connected to the fitting 28 in first passageway 32 such that at least the end of the first passageway 32 adjacent to the internal chamber 30 is in fluid communication with the lumen 58, depending upon the location of the first end 54 of the needle 52 in the first passageway 32.
- the first end 54 of the needle 52 preferably includes a roughened surface to allow a more secure connection to the fitting 28.
- the second end 56 of the needle 52 is sharpened to allow for penetration of a blood vessel 12, as shown in Fig. 1.
- a funnel 55 is preferably located on the first end 54 of the needle 52 to ensure that the guide wire 14 can be passed through the internal chamber 30 from axial bore 46 in the plug 40 and into the lumen 58 of the needle 52. This is especially important for the insertion of a guide wire 14 having a J- shaped end which must be temporarily straightened prior to introduction into the catheter guide wire introducing device 10.
- the J-shaped end has a tendency to try to return to its "J" shape as it passes through the internal chamber 30, and the funnel 55 guides the end of the guide wire 14 into the first end 54 of the needle lumen 58.
- the funnel 55 need not be part of the needle 52, but may be formed as part of the fitting 28 in proximity to the first end 54 of the needle 52, or may be formed as a combination of both.
- the needle 52 is preferably made of 303 stainless steel and has an outside diameter of approximately 0.050 inches and an inside diameter of approximately 0.042 inches.
- the needle 52 may be made from other suitable materials and may have a different size to suit a particular application.
- a plug 40 having an outer surface 42 is seated within an opening 44 defined by an interior wall of the fitting 28 generally opposite to the first passageway 32.
- the second passageway 34 is defined by an axial bore 46 through the plug 40, and the chamber 30 is located between the plug 40 and the first passageway 32.
- the third passageway 36 extends longitudinally between the plug
- the plug 40 is preferably formed by at least one channel 48 located on the periphery of the plug 40.
- at least two channels 48, 50 are provided and additional channels may be added, if desired.
- the plug 6 is preferably made of a class 6 medical grade ABS. Still with reference to Fig. 6, preferably the plug 40 includes a tapered portion 45 which extends into the internal chamber 30. The spacing between the tapered portion 45 of the plug 40 and the funnel 55 is preferably set to a distance which does not allow the end of the guide wire 14, as described above, to return to its "J" shape in the internal chamber 30.
- this spacing will vary depending on the size of the " J" at the end of the guide wire 14, which is generally a function of the guide wire diameter, and can varied as needed.
- the combination of the spacing between the tapered portion 45 and the funnel 55, along with the shape of the funnel 55, allows the guide wire 14 to pass through the internal chamber 30 without unbending.
- the conduit 60 is axially aligned with the introducer needle 52, with the first end of the conduit 60 being connected to the fitting 28, preferably by forming the conduit integrally with the plug 40.
- the conduit 60 may also be provided as a separate piece which is molded together with the plug 40 or joined to the plug 40 in a secondary operation such that the conduit passageway 66 is in fluid communication with the second passageway 34 and the internal chamber 30.
- the conduit 60 is preferably located within the flexible bulb 16 and extends from the fitting 28 at the first end of the flexible bulb to the second end
- a guide wire penetrable seal assembly 70 is connected to the second end 64 of the conduit and is in fluid communication with the conduit passageway 66 for preventing the passage of fluid within the conduit 60 outside the device 10, such as blood received in the conduit 60 during aspiration of a blood vessel 12, and for introducing the guide wire 14 into the conduit 60.
- the seal assembly 70 includes a seal support body 72 which is located at the second end 20 of the flexible bulb 16 and seals the interior cavity 22 at the second end 20 of the flexible bulb 16.
- the seal support body 72 is preferably formed integrally with the conduit 60 and the plug 40. However, the seal support body 72 may be formed as a separate piece which is then connected to the second end 64 of the conduit 60, if desired.
- the seal support body 72 is preferably made of a polymeric material, such as a medical grade ABS. However, it will be recognized by those skilled in the art from the present disclosure that the seal support body 72 can be made of other suitable polymeric or metallic materials, such as stainless steel, if desired.
- the guide wire penetrable seal assembly 70 includes a seal 74 with a central raised portion 76.
- the raised portion includes a depression 78, with a slit 80 being located in the depression 78 which is generally in alignment with the conduit 60.
- the slit 80 may be normal to the surface to the seal 74 or more preferably is at an acute angle relative to the surface of the seal 74, if desired.
- the seal 74 is preferably made from a medical grade natural or synthetic rubber, or an elastomeric material.
- the seal 74 is made of KRATONTM which is a thermoplastic elastomer available from Shell Chemical Co. or
- a seal support 84 is located adjacent to the raised portion 76 of the seal 74.
- the seal support 84 includes a complementary surface 86 to the central raised portion 76 and the depression 78 of the seal 74, and also includes a central opening 88 defined therethrough.
- the seal support body 72 includes a cylindrical recess 73 which receives the seal 74 and the seal support 84.
- the complementary surface 86 on the seal support 84 prevents the seal 74 from deforming in the area of the depression 78 and the slit 80 when pressure is applied from within the conduit passageway 66 to the seal 74 in order to prevent material from within the interior cavity 22 of the flexible bulb 16 or the conduit 60 from passing out through the seal 74.
- the shape of the complementary surface 86 on the seal support 84 also prevents deflection of the seal due to negative (vacuum) pressure from within the conduit 60 or flexible bulb 16 which could result in the introduction of outside air.
- the guide wire 14 can be introduced through the slit 80 in the seal 74 with minimal resistance.
- the guide wire 14 physically displaces the seal 74 in the area of the slit 80 in order to pass through the slit 80 and enter the conduit 60.
- the seal 74 conforms to the shape of the guide wire 14 to substantially prevent the entry of outside air along with the guide wire 14.
- a cap 90 is provided to hold the seal 74 and the seal support 84 within the cylinder recess 73 of the seal support body 72.
- the cap 90 includes a conical recessed opening 92 and an axial bore 94 extending therethrough which are adapted to direct the guide wire 14 to the slit 80 in the seal 74.
- the first end 18 of the flexible bulb 16 is affixed to the fitting
- the introducer device 10 is preferably used for aspirating and inserting a guide wire 14 into a body part, such as the blood vessel 12 shown in Fig. 1.
- the bulb 16 is first filled with a heparinized saline solution and then emptied by squeezing or depressing the bulb 16 together between the user's fingers. This evacuates air and the saline solution from the flexible bulb 16 out through the channels 48, the chamber 30 and the needle 52.
- the needle 52 While maintaining the bulb compressed, the needle 52 is introduced into the body part, which may be any body part. However, for the present description reference will be made to the blood vessel 12, as shown in Fig. 1.
- the flexible bulb 16 is released as the needle 52 is advanced.
- the blood vessel 12 is aspirated by piercing with the needle 52, with the vacuum created by releasing the flexible bulb 16 drawing blood from the vessel 12 through the lumen 58 of the needle 52, the internal chamber 30, the channels 48 and into the bulb 16. This allows the physician to ensure that the body part, such as blood vessel 12 has been properly located, even in situations where flashback flow is not expected, such as venous catheterization.
- the bulb 16 requires only one hand to operate in order to create and release the suction force, as opposed to a standard aspirating syringe which requires two hands to manipulate in order to draw blood into the syringe. This allows the physician or other user to control the drawing of blood with one hand while providing for collection of the flashback in the flexible bulb 16.
- the guide wire 14 is inserted through the seal assembly 70 and is slid through the passageway 66 in the conduit 60, the internal chamber 30 in the fitting 28, and the lumen 58 of the introducer needle 52 and into the blood vessel 12.
- the introducing device 10 can then be removed from the blood vessel 12 over the guide wire 14 while leaving the guide wire 14 in the vessel 12.
- the procedure for catheterization can then be carried out by inserting the catheter over the guide wire 14 or using the guide wire 14 as a guide for catheterization by any one of the known methods. It is also possible to use the present introducing device 10 for direct insertion of a catheter by placing a catheter (not shown) over the needle 52 such that the second end 56 of the needle 52 extends beyond the catheter tip.
- the body part 12 is aspirated using the introducing device 10 as described above. Once the needle 52 is properly positioned within the body part, such as the blood vessel 12, the catheter is advanced over the needle 52 and into position.
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- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
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Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98928935A EP0932369B1 (en) | 1997-07-17 | 1998-06-09 | Catheter guide wire introducing device and method |
AU80619/98A AU8061998A (en) | 1997-07-17 | 1998-06-09 | Catheter guide wire introducing device and method |
JP50715699A JP3766110B2 (en) | 1997-07-17 | 1998-06-09 | Catheter guide wire introduction device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/896,192 US6277100B1 (en) | 1997-07-17 | 1997-07-17 | Catheter guide wire introducing device and method |
US08/896,192 | 1997-07-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999003417A1 true WO1999003417A1 (en) | 1999-01-28 |
Family
ID=25405786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1998/011846 WO1999003417A1 (en) | 1997-07-17 | 1998-06-09 | Catheter guide wire introducing device and method |
Country Status (5)
Country | Link |
---|---|
US (1) | US6277100B1 (en) |
EP (1) | EP0932369B1 (en) |
JP (1) | JP3766110B2 (en) |
AU (1) | AU8061998A (en) |
WO (1) | WO1999003417A1 (en) |
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Also Published As
Publication number | Publication date |
---|---|
EP0932369A1 (en) | 1999-08-04 |
EP0932369A4 (en) | 2004-10-20 |
JP2001500776A (en) | 2001-01-23 |
US6277100B1 (en) | 2001-08-21 |
AU8061998A (en) | 1999-02-10 |
EP0932369B1 (en) | 2012-08-22 |
JP3766110B2 (en) | 2006-04-12 |
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