CRIMPING INSTRUMENT WITH REDUCED DIMENSION, CONTINUED COMPATIBILITY, AND TISSUE PROTECTION FEATURES

• US 20160345956A1
• Filed: 08/11/2016
• Published: 12/01/2016
• Est. Priority Date: 07/08/2014
• Status: Active Grant

• Current Assignee: LSI Solutions, Inc.
• Original Assignee: LSI Solutions, Inc.
• Inventors: Sauer, Jude S.
• Granted Patent: US 10,772,618 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 17/0467 Instruments for cutting sutures surgical cutting instruments A61B17/32
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/0487 Suture clamps, clips or locks, e.g. for replacing suture knots; Instruments for applying or removing suture clamps, clips or locks suture anchors A61B17/0401; wound clamps or clips A61B17/08; ligaturing clamps or clips A61B17/122
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors
• CPC Class Codes: A61B 2017/042 plastically deformed during insertion
• CPC Class Codes: A61B 2017/0445 cannulated, e.g. with a longitudinal through-hole for passage of an instrument
• CPC Class Codes: A61B 2017/0454 the anchor being crimped or clamped on the suture
• CPC Class Codes: A61B 2017/0488 Instruments for applying suture clamps, clips or locks
• CPC Class Codes: A61B 2090/0811 for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument

Abstract

An instrument for crimping a suture fastener to a surgical suture is disclosed. The instrument has a shaft and an expanded receiving face configured to receive the suture fastener and to provide a smoothing radius for a distal end of the shaft. The instrument also has an anvil in the distal end of the shaft. The instrument further has a hammer in the distal end of the shaft and moveable relative to the anvil for crimping the suture fastener therebetween and received in the expanded receiving face. The instrument also has a pusher moveable in a direction substantially parallel to a longitudinal axis of the shaft and configured to engage at least one of the hammer and the anvil for urging the hammer and the anvil together.

Claims

1. An instrument for crimping a suture fastener to a surgical suture, the instrument comprising:

a shaft;

an expanded receiving face configured to receive the suture fastener and to provide a smoothing radius for a distal end of the shaft;

an anvil in the distal end of the shaft;

a hammer in the distal end of the shaft and moveable relative to the anvil for crimping the suture fastener therebetween and received in the expanded receiving face; and

a pusher moveable in a direction substantially parallel to a longitudinal axis of the shaft and configured to engage at least one of the hammer and the anvil for urging the hammer and the anvil together.

2. The instrument of claim 1, wherein the expanded receiving face further comprises a collar recess configured to hold a collar of the suture fastener.

3. The instrument of claim 2, wherein the collar recess comprises a partial recess.

4. The instrument of claim 2, wherein the collar recess comprises a flush recess.

5. The instrument of claim 1, wherein:

the hammer and the anvil comprise a crimping member comprising first and second opposed legs;

the hammer is located near the end of the first opposed leg; and

the anvil is located near the end of the second opposed leg.

6. The instrument of claim 5, wherein the crimping member is configured to resiliently bias the hammer and anvil apart unless urged together by the pusher.

7. The instrument of claim 5, wherein the pusher configuration to engage at least one of the hammer and the anvil for urging the hammer and the anvil together comprises a configuration in which the pusher engages at least one of the first and second opposing legs and urges them together to bring the hammer and the anvil together.

8. The instrument of claim 5, wherein the crimping member comprises the expanded receiving face as an extension of at least one of the first and second opposing legs.

9. The instrument of claim 5, further comprising:

a suture cutting blade coupled to the pusher and configured for movement in the direction substantially parallel to the longitudinal axis of the shaft when moved by the pusher.

10. The instrument of claim 9, wherein the pusher comprises the suture cutting blade.

11. The instrument of claim 9, wherein the crimping member comprises one or more blade steering guides configured to restrict lateral movement of the suture cutting blade away from the direction substantially parallel to the longitudinal axis of the shaft.

12. The instrument of claim 5, wherein the first opposed leg comprises a flexure.

13. The instrument of claim 12, wherein the flexure is selected from the group consisting of a straight flexure, an arced flexure, a wavy flexure, and a hairpin flexure,

14. The instrument of claim 5, wherein at least one of the first and second opposing legs comprises a pre-load bump.

15. The instrument of claim 1, further comprising:

a suture cutting blade coupled to the pusher and configured for movement in the direction substantially parallel to the longitudinal axis of the shaft when moved by the pusher.

16. The instrument of claim 15, wherein the anvil comprises one or more blade steering guides configured to restrict lateral movement of the suture cutting blade away from the direction substantially parallel to the longitudinal axis of the shaft.

17. The instrument of claim 1, wherein the shaft comprises an outside diameter of less than or equal to approximately one hundred eighty thousandths of an inch.

18. The instrument of claim 1, further comprising:

a rotation knob coupled to the shaft, rotationally coupled to the pusher, and configured to rotate the shaft and pusher, and consequently the hammer, the anvil, and the expanded receiving face, around the longitudinal axis of the shaft.

19. The instrument of claim 18, further comprising:

a crimp direction indicator.

20. The instrument of claim 19, wherein the crimp direction indicator is aligned with a direction that the sleeve will lean when crimped by the hammer and anvil.

21. An instrument for crimping a suture fastener to a surgical suture, the instrument comprising:

a) a shaft;

b) a crimping member coupled to a distal end of the shaft and comprising first and second opposed legs;

c) an anvil located near the end of the second opposed leg;

d) an expanded receiving face coupled to the anvil, the expanded receiving face;

1) configured to receive the suture fastener and to provide a smoothing radius for a distal end of the shaft; and

2) comprising a collar recess configured to hold a collar of the suture fastener;

e) a hammer near the end of the first opposed leg and moveable relative to the anvil for crimping the suture fastener therebetween and received in the expanded receiving face;

f) a pusher moveable in a direction substantially parallel to a longitudinal axis of the shaft and configured to engage the hammer for urging the hammer towards the anvil;

g) a suture cutting blade coupled to the pusher; and

h) wherein;

1) the crimping member comprises one or more blade steering guides; and

2) the first opposed leg comprises a flexure.

22. An instrument for crimping a suture fastener to a surgical suture, the instrument comprising:

a) a shaft;

b) a crimping member coupled to a distal end of the shaft and comprising first and second opposed legs;

c) an anvil located near the end of the second opposed leg;

d) an expanded receiving face coupled to the anvil, the expanded receiving face;

1) configured to receive the suture fastener and to provide a smoothing radius for a distal end of the shaft; and

2) comprising a collar recess configured to hold a collar of the suture fastener;

e) a hammer near the end of a flexure of the first opposed leg and moveable relative to the anvil for crimping the suture fastener therebetween and received in the expanded receiving face;

f) a pusher moveable in a direction substantially parallel to a longitudinal axis of the shaft and configured to engage the hammer for urging the hammer towards the anvil; and

g) a rotation knob coupled to the shaft, rotationally coupled to the pusher, and configured to rotate the shaft and pusher, and consequently the hammer, the anvil, and the expanded receiving face, around the longitudinal axis of the shaft.