Method and apparatus for guiding a suture thread
View Patent ↗A suture device is configured to guide a suture thread. The device includes a sleeve that defines an opening, and a plunger to which a suture thread can be attached. The plunger can be inserted into the opening of the sleeve, and movable between a retracted position and an advanced position. When the plunger is in the retracted position, a distal portion of the suture thread is located proximal with respect to the distal end of the suture device. When the plunger is in the advanced position, the distal portion of the suture thread is driven out the distal end of the suture device.
1. A suture device configured to guide a suture thread, the suture device comprising:
a sleeve including a sleeve body that defines a proximal end, a distal end spaced from the proximal end along a central axis in a distal direction, and a sleeve length that extends from the proximal end to the distal end, the sleeve defining an opening extending along the central axis between the proximal end and the distal end; and
a plunger including a plunger body that extends along the central axis when the plunger is disposed in the opening of the sleeve, the plunger body defining a plunger proximal end, a plunger distal end spaced from the plunger proximal end along the central axis, and a plunger length that extends from the plunger proximal end to the plunger distal end, the plunger length being greater than the sleeve length, the plunger body defining a channel that extends from the plunger body proximal end to the plunger body distal end, wherein the plunger defines a clamp, the clamp including a pair of surfaces that are configured to capture the suture thread so as to releasably attach the suture thread to the plunger, and wherein when the plunger is slidably disposed in the opening of the sleeve, the plunger is movable in the distal direction from a first retracted position in which a distal portion of the suture thread is located in the suture device to a second advanced position in which the distal portion of the suture thread extends out of the suture device.
2. The suture device according to claim 1 , wherein the pair of surfaces are opposed to each other so as to define a gap therebetween, at least a portion of the gap sized less than a cross-sectional dimension of the suture thread such that the opposed surfaces compress the suture thread when the suture thread is disposed in the gap.
3. The suture device according to claim 2 , wherein the pair of surfaces taper toward each other along a direction from a periphery of the plunger body towards the central axis.
4. The suture device according to claim 2 , wherein the opposed surfaces are angularly offset with respect to each other at an angle of no greater than 50°.
5. The suture device according to claim 4 , wherein the angle is no less than 20°.
6. The suture device according to claim 2 , wherein the opposed surfaces taper away from each other along a direction from a periphery of the plunger body towards the central axis.
7. The suture device according to claim 2 , wherein the clamp is elastically configured so that the suture thread is clipped into the plunger.
8. The suture device according to claim 1 , wherein the clamp comprises a narrowed section of the channel.
9. The suture device according to claim 1 , further comprising a cannulated hook that extends distal with respect to the sleeve and is configured to receive the suture thread from the opening of the sleeve.
10. The suture device according to claim 9 , wherein the cannulated hook is acuminate.
11. The suture device according to claim 9 , wherein the cannulated hook is curved in more than one plane.
12. The suture device according to claim 1 , further comprising a handle that defines an aperture aligned with the opening of the sleeve when the handle is attached to the sleeve.
13. The suture device according to claim 12 , further comprising a slider attached to the plunger, the slider having a greater diameter than the plunger, wherein the slider is slidably disposed in the aperture of the handle.
14. The suture device according to claim 13 , wherein the handle defines a neck that divides the aperture into a proximal channel and a distal channel, and the neck defines an abutment surface that is configured to abut the slider when the plunger is in the second advanced position.
15. The suture device according to claim 13 , further comprising a pushbutton attached to the slider.
16. The suture device according to claim 1 , further comprising the suture thread.
17. The suture device according to claim 1 , wherein the suture thread is one of a multifilament or braided structure.
18. The suture device according to claim 1 , wherein the channel extends from a periphery of the plunger body along a direction toward the central axis.
19. The suture device according to claim 1 , wherein the plunger is configured to be inserted through the proximal end of the sleeve into the opening.
20. The suture device according to claim 1 , wherein movement of the plunger from the first retracted position to the second advanced position does not cause the clamp to release the suture thread.
21. The suture device according to claim 1 , wherein the suture extends out of a proximal end of the suture device in a proximal direcion that is oppisite to the distal direction when the suture is attached to the clamp.
22. A suture device configured to guide a suture thread, the suture device comprising:
a sleeve including a sleeve body that defines a proximal end and a distal end spaced from the proximal end along a central axis in a distal direction, the sleeve defining an opening extending along the central axis between the proximal end and the distal end;
a cannulated hook extending from the sleeve in the distal direction; and
a plunger configured to attach a portion of the suture thread, the plunger configured to be slidably disposed in the opening of the sleeve and movable in the distal direction along the central axis from a first retracted position in which the plunger and the portion of the suture thread are spaced from the cannulated hook to a second advanced position whereby the plunger and the portion of the suture thread extend into the cannulated hook.
23. The suture device according to claim 22 , wherein a distal portion of the suture thread is spaced from the portion of the suture thread along the distal direction, and the distal portion of the suture thread extends out of the suture device when the suture thread is attached to the plunger and the plunger is in the second advanced position.
24. The suture device according to claim 23 , wherein the distal portion of the suture thread is disposed in the device when the plunger is disposed in the first retracted position.
25. The suture device according to claim 22 , wherein the plunger comprises a plunger body that extends along the central axis when the plunger is disposed in the opening of the sleeve, wherein the plunger defines a clamp, the clamp including a pair of opposed surfaces that are configured to capture the portion of the suture thread so as to releasably attach the suture thread to the plunger.
26. The suture device according to claim 25 , wherein the pair of opposed surfaces define a gap therebetween, at least a portion of the gap sized less than a cross-sectional dimension of the suture thread such that the opposed surfaces compress the portion of the suture thread when the suture thread is disposed in the gap.
27. The suture device according to claim 26 , wherein the opposed surfaces taper toward each other along a direction from a periphery of the plunger body towards the central axis.
28. The suture device according to claim 26 , wherein the opposed surfaces taper away from each other along the direction from a periphery of the plunger body towards the central axis.
29. The suture device according to claim 26 , wherein the clamp is elastically configured so that the suture thread is clipped into the plunger.
30. The suture device according to claim 25 , wherein the opposed surfaces are angularly offset with respect to each other at an angle of no greater than 50°.
31. The suture device according to claim 30 , wherein the angle is no less than 20°.
32. The suture device according to claim 25 , wherein the plunger body defines a distal end and a proximal end, wherein the plunger defines a channel that extends through the plunger body from the proximal end to the distal end.
33. The suture device according to claim 32 , wherein the clamp comprises a narrowed section of the channel.
34. The suture device according to claim 25 , wherein the channel extends from a periphery of the plunger body along a direction toward the central axis.
35. The suture device according to claim 25 , wherein the suture extends out of a proximal end of the suture device in a proximal direcion that is oppisite the distal direction when the suture is attached to the plunger.
36. The suture device according to claim 22 , wherein the cannulated hook is acuminate.
37. The suture device according to claim 36 , wherein the cannulated hook is curved in more than one plane.
38. The suture device according to claim 22 , further comprising a handle that defines an aperture aligned with the opening of the sleeve when the handle is attached to the sleeve.
39. The suture device according to claim 38 , further comprising a slider attached to the plunger, the slider having a greater diameter than the plunger, wherein the slider is slidably disposed in the aperture of the handle.
40. The suture device according to claim 39 , wherein the handle defines a neck that divides the aperture into a proximal channel and a distal channel, and the neck defines an abutment surface that is configured to abut the slider when the plunger is in the second advanced position.
41. The suture device according to claim 39 , further comprising a pushbutton attached to the slider.
42. The suture device according to claim 22 , further comprising the suture thread.
43. The suture device according to claim 42 , wherein the suture thread is one of a multifilament or braided structure.
44. The suture device according to claim 22 , wherein movement of the plunger from the first retracted position to the second advanced position does not cause the plunger to release the suture thread.