Multifunctional minimally invasive surgical instrument

• US 5,456,684 A
• Filed: 09/08/1994
• Issued: 10/10/1995
• Est. Priority Date: 09/08/1994
• Status: Expired due to Fees

• Current Assignee: Hutchinson Technology Incorporated (TDK Corporation)
• Original Assignee: Hutchinson Technology Incorporated (TDK Corporation)
• Inventors: Schmidt, Mark A., Dettmann, James H.
• Primary Examiner(s): ASCHENBRENNER, PETER
• Application Number:
  US08/302,605
• Time in Patent Office: 397 Days
• Field of Search: 606/41, 606/45, 606/46, 606/48, 606/170, 606/174, 606/205-208, 606/142, 606/143, 604/35
• US Class Current: 606/41
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 17/2909 Handles
• CPC Class Codes: A61B 17/295 combined with cutting implements
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: A61B 2017/003 Steerable
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2929 with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2017/2939 Details of linkages or pivot points
• CPC Class Codes: A61B 2017/32113 with extendable or retractable guard or blade
• CPC Class Codes: A61B 2018/00083 low, i.e. electrically insulating
• CPC Class Codes: A61B 2018/1457 having opposing blades cutting tissue grasped by the jaws, i.e. combined scissors and pliers
• CPC Class Codes: A61B 2018/146 Scissors
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61B 2218/002 Irrigation
• CPC Class Codes: A61B 2218/007 Aspiration
• CPC Class Codes: A61M 1/772 operating alternately
• CPC Class Codes: A61M 1/774 Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently

Abstract

A multifunctional minimally invasive surgical instrument. The instrument includes a tool set on the opposite end of a support tube from a handle assembly. Grasping, manipulating, retracting, cutting, cauterizing, irrigation, suction, and electrosurgery functions can be performed by actuating the handle assembly. The tool set can also be rotated and articulated with respect to the handle assembly.

Claims

1. A multifunctional minimally invasive surgical instrument, including:

a handle assembly, including;

a handgrip;

a jaw actuator movably mounted to the handgrip; and

a blade actuator movably mounted to the handgrip;

a support tube extending from the handle assembly and having a distal end;

first and second jaws mounted to the distal end of the support tube for pivotal grasping cooperation with respect to one another, the first jaw including a blade-receiving structure;

a blade configured for movement between a retracted position within the distal end of the support tube, and a cutting position engaged with the blade-receiving structure of the first jaw and in cutting cooperation with the second jaw;

a blade linkage extending through the support tube and coupling the blade actuator to the blade, for causing the blade to move between the retracted and cutting positions in response to actuation of the blade actuator; and

a jaw linkage extending through the support tube and coupling the jaw actuator to at least one of the first and second jaws, for causing the jaws to open and close in grasping cooperation in response to actuation of the jaw actuator when the blade is in the retracted position, and for causing the blade to move in cutting cooperation with the second jaw when the blade is in the cutting position.

2. The multifunctional surgical instrument of claim 1 and further including:

a fluid tip within the tube and configured for movement between a retracted position between the jaws and the handle assembly and an extended position beyond the jaws;

a tip actuator movably mounted to the handle assembly;

a tip linkage coupling the fluid tip to the tip actuator, for causing the fluid tip to move between the extended and retracted positions in response to actuation of the tip actuator;

at least one source tube extending from the fluid tip through the support tube, for coupling the fluid tip to at least one fluid source; and

a fluid control member mounted to the handle assembly for controlling fluid flow through each fluid source tube.

3. The multifunctional surgical instrument of claim 2 wherein:

the fluid tip includes a suction/irrigation tip;

the instrument includes suction and irrigation source tubes for coupling the suction/irrigation tip to suction and irrigation sources, respectively; and

the instrument includes suction and irrigation control members mounted to the handle assembly for controlling suction and irrigation fluid flow through the suction and irrigation source tubes, respectively.

4. The multifunctional surgical instrument of claim 2 wherein each fluid control member includes a finger-actuated pinch valve mounted to the handgrip for releasably pinching the associated source tube.

5. The multifunctional surgical instrument of claim 2 wherein the tip actuator includes a thumb-actuated switch extending from the handle assembly.

6. The multifunctional surgical instrument of claim 2 and further including a rotating mount for mounting the first and second jaws, the blade and the fluid tip for rotation with respect to the handle assembly.

7. The multifunctional surgical instrument of claim 6 wherein the rotating mount includes:

means for rotatably mounting the support tube to the handle assembly; and

a knob mounted to the support tube for rotating the support tube with respect to the handle assembly.

8. The multifunctional surgical instrument of claim 1 wherein:

at least one of the jaws includes an electrically conductive member; and

the instrument further includes an electrical conductor extending from the electrically conductive jaw member through the support tube, for coupling electricity to the electrically conductive jaw member.

9. The multifunctional surgical instrument of claim 1 wherein:

the first and second jaws include electrically conductive members; and

the instrument further includes first and second electrical conductors for extending from the electrically conductive members of the first and second jaws through the support tube, for independently coupling electricity to the electrically conductive members of the first and second jaws, respectively.

10. The multifunctional surgical instrument of claim 1 and further including a rotating mount for mounting the first and second jaws and blade for rotation with respect to the handle assembly.

11. The multifunctional surgical instrument of claim 10 wherein the rotating mount includes:

means for rotatably mounting the support tube to the handle assembly; and

a knob mounted to the support tube for rotating the support tube with respect to the handle assembly.

12. The multifunctional surgical instrument of claim 1 and further including an articulating mount for mounting the first and second jaws and blade for articulation with respect to the handle assembly.

13. The multifunctional surgical instrument of claim 12 wherein:

the articulating mount includes an articulating joint for articulating the distal end of the support tube;

the handle assembly further includes an articulation actuator movably mounted with respect to the handgrip; and

the instrument further includes an articulation linkage coupling the articulation actuator to the distal end of the support tube, for causing the distal end of the support tube to articulate in response to actuation of the articulation actuator.

14. The multifunctional surgical instrument of claim 1 and further including:

a jaw holder mounted to the distal end of the support tube; and

a pivot mount for pivotally mounting the first and second jaws to the jaw holder.

15. The multifunctional surgical instrument of claim 14 wherein:

the first and second jaws include elongated slots between the pivot mount and the handle assembly; and

the jaw linkage includes pins extending through the elongated slots, for sliding motion within the slots and causing the jaws to open and close in response to actuation of the jaw actuator.

16. The multifunctional surgical instrument of claim 14 wherein the jaw actuator includes a trigger mounted to the handgrip.

17. The multifunctional surgical instrument of claim 16 wherein the jaw actuator includes a thumb-actuated trigger mounted to the handgrip.

18. The multifunctional surgical instrument of claim 1 wherein the jaw actuator includes a thumb-actuated trigger mounted to the handgrip.

19. The multifunctional surgical instrument of claim 1 and further including a guide slot in the distal end of the support tube for enclosing the blade when the blade is in the retracted position, and for guiding the blade onto the first jaw when the jaws are closed and the blade is being moved to the cutting position.

20. The multifunctional surgical instrument of claim 1 wherein:

the blade-receiving structure of the first jaw includes a slot; and

the blade includes a leg slidably engaged in the slot of the first jaw.

21. The multifunctional surgical instrument of claim 20 wherein:

the blade-receiving structure of the first jaw includes a keeper pin extending between opposite sides of the slot; and

the blade further includes a notch in the distal end of the leg for engaging the keeper pin in the first jaw when the blade is in the cutting position.

22. The multifunctional surgical instrument of claim 20 wherein:

the leg of the blade includes an aperture; and

the blade linkage includes a hook for engaging the aperture in the blade.

23. The multifunctional surgical instrument of claim 1 wherein the blade actuator includes a finger-actuated knob extending from the handle assembly.

24. A multifunctional minimally invasive surgical instrument, including

a handle assembly, including:

a hand grip;

a jaw actuator movably mounted to the hand grip;

a blade actuator movably mounted to the hand grip;

a suction/irrigation tip actuator movably mounted to the hand grip; and

an articulation actuator movably mounted to the hand grip;

a support tube extending from the handle assembly and having a distal end;

first and second jaws mounted to the distal end of the support tube for pivotal grasping cooperation with respect to one another, the first jaw including a blade-receiving structure;

a blade configured for movement between a retracted position within the distal end of the support tube, and a cutting position engaged with the blade-receiving structure of the first jaw and in cutting cooperation with the second jaw;

a blade linkage extending through the support tube and coupling the blade actuator to the blade, for causing the blade to move between the retracted and cutting positions in response to actuation of the blade actuator;

a jaw linkage extending through the support tube and coupling the jaw actuator to at least one of the first and second jaws, for causing the jaws to open and close in grasping cooperation in response to actuation of the jaw actuator when the blade is in the retracted position, and for causing the blade to move in cutting cooperation with the second jaw when the blade is in the cutting position;

an articulation linkage for causing the distal end of the support tube to articulate in response to actuation of the articulation actuator;

a suction/irrigation tip linkage coupling the suction/irrigation tip to the suction/irrigation tip actuator, for causing the suction/irrigation tip to move between the extended and retracted positions in response to actuation of the suction/irrigation tip actuator;

at least one source tube extending from the suction/irrigation tip through the support tube, for coupling the suction/irrigation tip to suction and irrigation sources;

a rotatable mount for rotatably mounting the support tube to the handle assembly; and

a knob for rotating the support tube with respect to the handle assembly.