Multi-function surgical instrument tool actuator assembly

• US 20030195492A1
• Filed: 05/15/2003
• Published: 10/16/2003
• Est. Priority Date: 11/17/1998
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Richards, Mark Isom, Mereness, W. Michael, Ward, Tim, Nishtala, Srinivas, Gobron, Stephane
• Granted Patent: US 7,217,264 B2
• Time in Patent Office: Days
• US Class Current: 606/1
• CPC Class Codes: A61B 17/2909 Handles
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 2017/00269 endoscopic mucosal resection EMR
• CPC Class Codes: A61B 2017/00353 one mechanical instrument performing multiple functions, e.g. cutting and grasping
• CPC Class Codes: A61B 2017/00362 Packages or dispensers for MIS instruments A61B2017/0479 takes precedence
• CPC Class Codes: A61B 2017/2946 Locking means
• CPC Class Codes: A61B 2090/0801 Prevention of accidental cutting or pricking
• CPC Class Codes: A61M 5/31513 Piston constructions to improve sealing or sliding

Abstract

A tool actuating assembly for a multi-function surgical instrument is disclosed. The tool actuating assembly of the present invention can be utilized in a variety of differently configured multi-function surgical instruments and can be embodied in various physical configurations. The tool actuating assembly of the present invention provides for more efficient use of the tools of the instrument by the surgeon who is utilizing the instrument.

Claims

1. A multi-function surgical instrument comprising:

a tubular body;

a finger ring assembly slidably mounted on said body;

a shaft slidably mounted within a distal end of said body;

a first surgical tool disposed within said shaft and said body and connected to said finger ring assembly;

a second surgical tool disposed within said shaft and said body and connected to a proximal end of said body; and

an actuator member slidably mounted on said body and attached to said shaft.

2. The multi-function surgical instrument of claim 1 wherein:

said body defines a guiding slot at a distal end of said body; and

said actuator member includes;

a head portion, said head portion disposed outside of said body;

an elongated stem portion, said stem portion extending from said head portion and partially disposed within said body; and

a slot guide, said slot guide disposed on said elongated stem portion and received within said guiding slot.

3. The multi-function surgical instrument of claim 2 wherein said slot guide includes a first guide tab and a second guide tab and wherein said first and second guide tabs are disposed on opposing sides of said elongated stem portion.

4. The multi-function surgical instrument of claim 1 wherein said actuator member includes:

an engagement head portion disposed proximal to said finger ring assembly;

a shaft attachment portion disposed at a distal end of said body; and

a connection member, said connection member attached to said engagement head portion and said shaft attachment portion and disposed within said body.

5. The multi-function surgical instrument of claim 4 further comprising a biasing member, said biasing member disposed within said body at a proximal end of said body and located proximal to said actuator member and said finger ring assembly.

6. A multi-function surgical instrument comprising:

a body;

a finger ring assembly slidably mounted on said body;

a shaft attached to a distal end of said body;

a first surgical tool disposed within said shaft and said body and connected to said finger ring assembly;

an actuator member rotatably mounted in said body and operably associated with said finger ring assembly; and

a second surgical tool disposed within said shaft and said body and operably connected to said actuator member.

7. The multi-function surgical instrument of claim 6 wherein said actuator member is a circular gear and wherein a pulley cable extends from said finger ring assembly to said gear to operably couple said gear to said finger ring assembly, said pulley cable including teeth at a distal end thereof, said teeth engageable with said gear.

8. The multi-function surgical instrument of claim 7 wherein said second surgical tool includes a hub, said hub slidably disposed within said body and including teeth, said teeth engageable with said gear.

9. The multi-function surgical instrument of claim 6 wherein said actuator member is a gear, said gear defining a channel at a first end thereof and including teeth at a second end thereof and wherein a pulley cable extends from said finger ring assembly to said gear to operably couple said gear to said finger ring assembly, said pulley cable including a stop member at a distal end thereof and said pulley cable received within said channel.

10. The multi-function surgical instrument of claim 9 further comprising a biasing member, said biasing member disposed within said body and cooperating with said gear to bias said gear in a first position where a distal end of said second surgical tool is disposed within said sheath.

11. The multi-function surgical instrument of claim 6 wherein said actuator member is mounted in said body proximal to said finger ring assembly and wherein said actuator member includes a tool attachment portion and an engagement portion, said second surgical tool attached to said tool attachment portion and said engagement portion engageable with said finger ring assembly.

12. The multi-function surgical instrument of claim 11 wherein said tool attachment portion includes a first arm member and a second arm member wherein both said first arm member and said second arm member include an aperture defined therein and wherein said tool attachment portion has a first longitudinal axis and said engagement portion has a second longitudinal axis wherein said first longitudinal axis is off-set from said second longitudinal axis.

13. A multi-function surgical instrument comprising:

a body;

a housing attached to a distal end of said body;

a finger ring assembly slidably mounted on said body;

a first surgical tool disposed within said body and extending through said housing, said first surgical tool connected to said finger ring assembly and including a coupler; and

a second surgical tool slidably mounted within said housing;

wherein said coupler engages said second surgical tool when said first surgical tool is moved distally through said housing.

14. The multi-function surgical instrument of claim 13 further including a biasing member, said biasing member disposed in said housing.

15. The multi-function surgical instrument of claim 13 wherein said second surgical tool includes a hub and wherein said coupler engages said hub.

16. The multi-function surgical instrument of claim 15 wherein said hub includes a channel and wherein said first surgical tool is received within said channel.

17. A multi-function surgical instrument comprising:

a body;

a first instrument hub slidably disposed within said body;

a second instrument hub slidably disposed within said body;

a finger ring assembly slidably mounted on said body; and

a surgical tool actuator assembly mounted within said finger ring assembly and selectively engageable with said first and second instrument hubs.

18. The multi-function surgical instrument of claim 17 wherein said surgical tool actuator assembly is rotatably mounted within said finger ring assembly and includes a top switching member and a bottom switching member, said top switching member and said bottom switching member engageable with each other such that when said top switching member is manually rotated by a user to engage one of said first and second instrument hubs said bottom switching member is automatically rotated to engage the other of said first and second instrument hubs.

19. The multi-function surgical instrument of claim 18 wherein said top switching member includes an instrument hub actuating member and a bottom switch member engagement tab, said instrument hub actuating member and said bottom switch member engagement tab attached to a first side of said top switching member and disposed within said finger ring assembly.

20. The multi-function surgical instrument of claim 18 wherein said bottom switching member includes an instrument hub locking member and a top switch engagement member.

21. The multi-function surgical instrument of claim 17 wherein said finger ring assembly includes a first housing and a second housing and wherein said surgical tool actuator assembly includes a first actuator button slidably disposed within said first housing and a second actuator button slidably disposed within said second housing.

22. The multi-function surgical instrument of claim 21 wherein said first instrument hub includes a first hub engagement member and said second instrument hub includes a second hub engagement member and wherein said first hub engagement member is engageable with said first actuator button and wherein said second hub engagement member is engageable with said second actuator button.

23. The multi-function surgical instrument of claim 17 wherein said surgical tool actuator assembly includes a guide structure and an actuator tab, said actuator tab disposed on said guide structure.

24. The multi-function surgical instrument of claim 23 wherein said guide structure defines a first guide slot having a first longitudinal axis and a second guide slot having a second longitudinal axis.

25. The multi-function surgical instrument of claim 17 further comprising a shaft stress relief member, said shaft stress relief member attached to a distal end of said body.

26. The multi-function surgical instrument of claim 23 wherein said finger ring assembly includes an actuator guide structure receiving ring and wherein said guide structure is received within said actuator guide structure receiving ring.

27. The multi-function surgical instrument of claim 24 wherein said body includes a guide bar and wherein said guide bar is received within said first and second guide slots.

28. A surgical tool actuator assembly comprising:

a body, said body including;

a first tool receiving member; and

a second tool receiving member,

a tool lock-out switch, said tool lock-out switch rotatably mounted in said body and selectively engageable with said first tool receiving member and said second tool receiving member wherein when said tool lock-out switch is engaged with one of said first or second tool receiving members a surgical tool which is disposed within said engaged receiving member is locked-out from use for a user of the tool.

29. The surgical tool actuator assembly of claim 28 wherein said tool lock-out switch includes a hub mounted in said body and a first locking member disposed between said hub and said first tool receiving member and a second locking member disposed between said hub and said second tool receiving member.

30. The surgical tool actuator assembly of claim 29 wherein said hub includes a trough along a portion thereof.