WO2005032638A2 - Side loading wire torquing device - Google Patents
Side loading wire torquing device Download PDFInfo
- Publication number
- WO2005032638A2 WO2005032638A2 PCT/US2004/031374 US2004031374W WO2005032638A2 WO 2005032638 A2 WO2005032638 A2 WO 2005032638A2 US 2004031374 W US2004031374 W US 2004031374W WO 2005032638 A2 WO2005032638 A2 WO 2005032638A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- channel
- guidewire
- wire
- slider
- body portion
- 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
- A61M25/09—Guide wires
- A61M25/09041—Mechanisms for insertion of guide wires
-
- 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
- A61M25/09—Guide wires
- A61M2025/09116—Design of handles or shafts or gripping surfaces thereof for manipulating guide wires
Definitions
- the present invention relates to medical devices in general, and in particular to devices for applying torque to thin wires or cables.
- Many minimally invasive medical procedures require a guidewire to be inserted into a patient and one or more catheters or other medical devices to be advanced over the guidewire in order to perform a medical procedure, view body tissue or obtain a tissue sample. While performing a procedure, it is not uncommon that the physician wishes to change the orientation of the guidewire. This is particularly true if the guidewire has an angled tip and the physician is trying to direct the tip into a branch in a patient's vasculature.
- guidewires are long, thin wires, it is difficult to maintain an adequate purchase on a guidewire in order to impart torque to its distal end. Therefore, many physicians use a guidewire torquing device that clamps on to the wire in order to allow the physician to twist it.
- Most guidewire torquing devices are advanced axially over the proximal end of the guidewire and include a pin vise or sliding locking mechanism that compresses the guidewire in order to secure it.
- Such torquing devices generally require two hands to operate and require the physician to load the torquing device over the entire proximal length of the guidewire.
- Other types of guidewire torquing devices are side loading, cliplike devices that grasp a guidewire in a channel.
- a wire torquing device in accordance with one embodiment of the invention includes a body portion having an open side channel into which a wire can be fitted.
- a slider that is movable along the channel secures a wire between the slider and a fixed surface that is disposed within the channel. With the wire secured, torque can be applied to the wire by rotating the body portion.
- the wire torquing device has a clam shell structure with a top and bottom section that are folded around a wire.
- a channel within the top and bottom sections receives a wire that is secured when the top section is folded over the bottom section.
- the channel in the top and bottom sections include a wire bending mechanism to impart one or more curves to the wire in order to aid in torquing the wire as the body portion is rotated.
- the wire torquing device includes a channel and a tapered outer surface with one end having a smaller diameter than another end. A ring is slideable over the device to compress a wire that is within the channel.
- the wire torquing device can include a clip to secure coils of wire when not in use.
- FIGURE 1 illustrates a wire torquing device in accordance with one embodiment of the present invention.
- FIGURE 2 is a cross-sectional view of the wire torquing device shown in FIGURE 1;
- FIGURE 3 illustrates a slider used within the wire torquing device shown in FIGURE 1;
- FIGURE 4 illustrates a wire torquing device in accordance with another embodiment of the present invention;
- FIGURES 5A-5C illustrate a wire torquing device in accordance with yet another embodiment of the invention;
- FIGURE 6 illustrates a wire torquing device in accordance with yet another embodiment of the invention;
- FIGURE 7 illustrates a wire torquing device in accordance with yet another embodiment of the invention;
- FIGURES 8A and 8B illustrate another embodiment of a wire torquing device in accordance with the present invention;
- FIGURE 9 illustrates yet another embodiment of a wire torquing device in accordance with the present invention; and
- FIGURE 10 illustrates a wire clip that can be used with the wire torquing devices of the present invention.
- FIGURE 1 shows a side loading wire torquing device 20 in accordance with one exemplary embodiment of the present invention.
- the torquing device 20 includes a body portion 22 and a thumb actuated slider 24.
- the body portion 22 is formed as a U-shaped channel 26 having a tongue 28 that is suspended in the channel by a post 29.
- the slider 24 comprises a U- or other-shaped member having a center channel 30 and pair of thumb rests 32 formed at the free ends of the U-shaped member. The thumb rests 32 allow the user to move the slider 24 back and forth in the channel 26 of the body portion 22 with one hand.
- the slider 24 has outwardly extending flanges 34 that fit within corresponding slots 36 that are formed in the interior of the side walls that define the channel 26 of the body portion 22.
- the body portion 22 and the slider 24 of the wire torquing device 20 can be injection molded of a thermoplastic or other material.
- the slider 24 is snapped into the channel 26 of the body portion 22 such that the flanges 34 fit within the slots 36.
- a free end of the tongue 28 is suspended by the post 29 to extend into the center channel 30 of the slider 24 when the slider 24 is moved in the channel 26.
- the post 29 also engages one side of the slider 24 in order to limit the movement of the slider 24 in the channel 26.
- the body portion 22 includes a pair of stops 38 that engage the thumb rests 32 to keep the slider 24 from sliding out of the device 20.
- FIGURE 2 illustrates how the slider 24 and the tongue 28 of the torquing device 20 engage a guidewire 50.
- the guidewire 50 is inserted into the center channel 30 of the slider 24 and the channel 26 of the body portion 22.
- a lower surface 42 of the tongue 28 is angled with respect to the bottom of the channel 26 so that one end of the tongue is closer to the bottom of the channel than the other end of the tongue.
- the bottom of the channel 30 has a similar cooperating angle.
- the physician can apply torque to the guidewire by rotating the torquing device 20.
- the body portion 22 of the wire torquing device 20 may include a number of longitudinally extending ridges 46 or other recesses/protrusions on its outer surface that increase the grippability of the body portion 22.
- the guidewire torquing device 20 can be fitted over a guidewire and operated with one hand by a physician or their assistant.
- FIGURE 4 illustrates another embodiment of a side loading wire torquing device 80 in accordance with the present invention.
- the torquing device 80 includes a body portion 82 having a center channel 83 and a wedge 84 secured to, or integrally formed with, an inner wall of the center channel 83 of the body portion 82.
- a movable slider 86 has a corresponding wedge shaped surface 88 such that a guidewire 90 placed in the channel 83 of the body portion 82 can be pinched against the wedge 84 by movement of the slider 86 against the wedge 84.
- the engaging surfaces of the slider 86 and the wedge 84 may include a grip- enhancing device such as a ridged, roughened or rubberized surface, etc., to enhance the hold of the guidewire within the channel 83.
- the engaging surfaces of the wedge 84 and the slider 86 may be shaped to impart a bend in the guidewire as described below.
- FIGURE 5A illustrates a wire torquing device in accordance with an alternative embodiment of the present invention.
- the wire torquing device 100 has a clam shell structure with a lower section 102 and an upper section 104 that are joined by a hinge 106 that extends along the length of the joined upper and lower sections.
- the upper and lower sections 104, 102 are foldable over a guidewire 120 so that a physician can impart torque to the guidewire 120 by turning the torquing device 100.
- the guidewire 120 fits within a channel 108 in the lower section 102 and a corresponding channel 110 that is formed in the upper section 104.
- the two channels 108 and 110 align when the upper section 104 is closed on the lower section 102.
- Each of the channels 108 and 110 are formed such that a bend is imparted to the guidewire 120 when the upper section 104 is closed on the lower section 102.
- the bend is achieved by forming an arcuate support in the channel 108 and a corresponding arcuate recess in the channel 110 or vice versa.
- the bend in the guidewire increases the torque that can be applied to the guidewire when the torquing device 100 is rotated.
- the physician lays a guidewire 120 in the channel 108 and closes the upper section 104 over the lower section 102.
- the torquing device 100 may include a latch (not shown) or other locking mechanism that keeps the upper section 104 engaged with the lower section 102. With the torquing device secured around the guidewire, the physician can then turn the torquing device 100 to impart a torque to the guidewire 120.
- the bend in the guidewire 120 is oriented generally in a direction normal to the plane of the upper and lower sections 102 and 104.
- the channel 108 may be curved in the same plane of the sections 102 and 104 as shown in FIGURE 5C.
- the sharper the bend that can be imparted to the guidewire 120 the greater the torque that is applied to the guidewire 120 as the torquing device 100 is rotated by a physician.
- the channels may be gently curved as shown in FIGURES 5A, 5B, and 5C, or may be more sharply curved or sinusoidal in shape.
- FIGURE 6 shows an alternate embodiment of a wire torquing device 140, in accordance with another embodiment of the present invention.
- the wire torquing device 140 includes a bottom section 142 and a top section 144 that are joined by a hinge 146 that extends along a length of the joined edges. If desired, the free ends of the top and bottom sections may be held together with a latch or other locking mechanism (not shown).
- Within the bottom section 142 is a channel 148 in which a guidewire is placed.
- the channel 148 has an arcuate recess 150 and an arcuate support 152, such that the path along the length of the channel 150 forms an S-shaped bend.
- a channel 160 in the upper section 144 has a cooperating arcuate recess 162 that aligns with the arcuate support 152 and an arcuate support 164 that aligns with the arcuate recess 150.
- FIGURE 7 illustrates another embodiment of a wire torquing device in accordance with the present invention.
- the wire torquing device 180 has a clam shell structure with a bottom section 182 and a top section 184 that are joined by hinge 186 that extends along a length of the joined sides of the bottom section and top section.
- a latch or other locking device may hold the free sides of the top and bottom sections together when closed about the hinge 186.
- the bottom section 182 includes a channel 190 extending along its length. Within the channel is a grip enhancing material 192 such as a latex strip, sandpaper, or other rubberized or grip enhancing material.
- the top section 184 includes a channel 194 extending along its length. Within the channel 194 is a grip enhancing material 196 such as a latex, sandpaper, or other rubberized or grip enhancing material.
- a physician lays a guidewire (not shown) in the channel 190 and closes the top section 194 over the bottom section 182.
- a wire torquing device 210 comprises a body portion having an open channel 212 extending along its length. A physician or their assistant can load a guidewire into the device by placing a guidewire 214 in the channel 212.
- the body also includes a slot 218 that is preferably oriented at 90° to the orientation of the channel 212. Within the slot 218 is a slider 216.
- the slider 216 may comprise an I-beam- or other-shaped member having recesses 220 on either side that cooperate with protruding ribs 222 in the slot 218.
- the ribs 222 are preferably angled in the slot 218 such that movement of the slider 216 along the length of the slot 218 causes the bottom surface of the slider 216 to be forced toward a wall of the channel 212.
- movement of the slider 216 in the channel pinches the guidewire between the bottom surface of the slider 216 and a wall of the channel 212.
- the slider 216 can be inserted into an open end 228 of the slot 218 and an endcap 230 secured over the end of the guidewire torquing device in order to close the slot 218.
- the slider 216 is shown as having an I-beam shape with recesses 220 that receive corresponding ribs 222, it will be appreciated that the slider 216 may include outwardly extending ribs that are received in corresponding angled slots in the guidewire torquing device or other cooperating mechanisms that force the bottom surface toward the center axis of the torquing device as it is moved in the slot 218.
- FIGURE 9 shows yet another alternative embodiment of a guidewire torquing device in accordance with the recent invention.
- a wire torquing device 250 includes a tapered body 252.
- a channel 254 extends along the side of the body 252 such that a guidewire can be placed in the channel 254.
- a ring 256 is positioned over the torquing device 250 such that movement of the ring 256 causes the channel 254 to be compressed around a guidewire within the channel 254.
- the torquing device 250 is preferably made of a resilient plastic that is compressible by the ring 256.
- the ring 256 may include handles or grips to aid in pulling the ring along the length of the guidewire torquing device.
- the ring 256 may be rotated such that an opening 258 of the ring is not aligned with the opening in channel 254.
- the wire torquing device 250 is preferably made of a flexible plastic material such as polyethylene, polyurethane or other thermoplastic material that will plastically deform under the compression force exerted as the ring 256 is moved along its length.
- the material selected should allow the channel 254 to reopen once the ring 256 is moved toward the smaller end of the torquing device.
- FIGURE 10 shows an addition that can be combined with any of the guidewire torquing devices described above or used alone.
- the device comprises a clip 260 that maintains a guidewire in a coil when not being used by a physician.
- the clip 260 includes a pair of jaws 262, 264 folded back over each other and are secured together with a clip 266 at the end of the jaw.
- the jaws 262, 264 are placed around a number of wire coils 270 in order to maintain the coils 270 in a neat configuration when the wire is not being used.
- the clip 266 is then secured in order to lock the jaws 262, 264 together.
- the clip 260 can be secured to or integrally formed with any of the wire torquing devices described above. While the preferred embodiments of the invention have been illustrated and described, it will be appreciated that various changes can be made therein without departing from the scope of the invention. It is therefore intended that the scope of the invention be determined from the following claims and equivalents thereof.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04784976A EP1677866A2 (en) | 2003-09-30 | 2004-09-24 | Side loading wire torquing device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/675,223 US7717865B2 (en) | 2003-09-30 | 2003-09-30 | Side loading wire torquing device |
US10/675,223 | 2003-09-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005032638A2 true WO2005032638A2 (en) | 2005-04-14 |
WO2005032638A3 WO2005032638A3 (en) | 2005-08-11 |
Family
ID=34377089
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/031374 WO2005032638A2 (en) | 2003-09-30 | 2004-09-24 | Side loading wire torquing device |
Country Status (3)
Country | Link |
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US (2) | US7717865B2 (en) |
EP (1) | EP1677866A2 (en) |
WO (1) | WO2005032638A2 (en) |
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2003
- 2003-09-30 US US10/675,223 patent/US7717865B2/en not_active Expired - Fee Related
-
2004
- 2004-09-24 EP EP04784976A patent/EP1677866A2/en not_active Withdrawn
- 2004-09-24 WO PCT/US2004/031374 patent/WO2005032638A2/en active Application Filing
-
2010
- 2010-04-07 US US12/755,930 patent/US20100191152A1/en not_active Abandoned
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006124580A1 (en) * | 2005-05-12 | 2006-11-23 | Wilson-Cook Medical, Inc. | Wire guide torque device |
US8025629B2 (en) | 2005-05-12 | 2011-09-27 | Cook Medical Technologies Llc | Wire guide torque device |
AU2006247600B2 (en) * | 2005-05-12 | 2012-07-05 | Cook Medical Technologies Llc | Wire guide torque device |
WO2020052331A1 (en) * | 2018-09-11 | 2020-03-19 | 南微医学科技股份有限公司 | Guide wire joint |
Also Published As
Publication number | Publication date |
---|---|
US7717865B2 (en) | 2010-05-18 |
EP1677866A2 (en) | 2006-07-12 |
US20050070820A1 (en) | 2005-03-31 |
WO2005032638A3 (en) | 2005-08-11 |
US20100191152A1 (en) | 2010-07-29 |
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