Rotational surgical instrument handle

• US 5,338,317 A
• Filed: 05/03/1991
• Issued: 08/16/1994
• Est. Priority Date: 05/03/1991
• Status: Expired due to Term

• Current Assignee: Cook Medical Technologies, LLC (Cook Group Incorporated)
• Original Assignee: Cook Urological, Inc. (Cook Group Incorporated), Vance Products Incorporated (Cook Group Incorporated)
• Inventors: Pingleton, Edward D., Hasson, Harrith M., Thomson, Paul G.
• Primary Examiner(s): Thaler, Michael H.
• Assistant Examiner(s): LEWIS, WILLIAM W
• Application Number:
  US07/695,297
• Time in Patent Office: 1,201 Days
• Field of Search: 606/166, 606/167, 606/170, 606/174, 606/205-210, 128/750, 128/751, 128/752, 128/753, 128/754, 128/755, 30/137, 294/99.2, 294/115
• US Class Current: 606/206
• CPC Class Codes: A61B 17/2909 Handles

Abstract

A rotational surgical instrument including a working head connected to a rotatable, pencil-like handle. The handle includes a casing with distal and proximal end caps, an elongated outer member extending into the casing, and a actuation link extending from the distal end cap through the casing and elongated member to the working head. An actuating mechanism is positioned distally from the distal end cap about the proximal portion of the elongated member for slidably actuating the working head between and open and closed positions. A compression spring is included in the passageway of the casing around the actuation link between the proximal end cap and the proximal end of the elongated member to return the working head to the nonactuated position. Keyed surfaces are included within the passageway of the casing and attached to the distal end of the casing and the proximal end of the elongated member for preventing rotation of the elongated member with respect to the casing and actuation link. A spring is also positioned between the distal end cap and the actuating mechanism for varying the combined tension of the two springs for operating the handle. The variable tension spring is varied by rotating a knob of the actuating mechanism which adjusts the distance from the distal end cap.

Claims

1. A rotational surgical instrument handle comprising:

a cylindrical casing having a removable distal end cap, a removable proximal end cap, and a longitudinal passageway extending therebetween;

an elongated member having a distal end, a proximal end positioned within said passageway of said casing, a proximal portion positioned through said removable distal end cap and longitudinally slidable between first and second positions with respect to said casing, and a longitudinal passageway extending between said distal and proximal ends thereof;

an actuation link positioned and slidable within said longitudinal passageway of said elongated member and having a distal end and a proximal end extending beyond said proximal end of said elongated member and fixedly connected longitudinally to said removable proximal end cap; and

an actuating mechanism positioned distally from said removable distal end cap of said casing and connected about said proximal portion of said elongated member for actuating said elongated member between said first and second positions.

2. The handle of claim 1 further comprising a first compression member positioned within said passageway of said casing, about said proximal end of said actuation link, and between said removable proximal end cap of said casing and said proximal end of elongated member.

3. The handle of claim 2 further comprising a second compression member positioned about said proximal portion of said elongated member between said actuating mechanism and said removable distal end cap of said casing.

4. The handle of claim 3 wherein said actuating mechanism is slidable between first and second positions from said removable distal end cap of said casing and wherein said actuating mechanism includes longitudinal adjustment means for varying a distance between said first and second positions.

5. The handle of claim 1 further comprising a first compression member positioned within said passageway of said casing, about said proximal end of said actuation link, about said proximal portion of said elongated member, and between said proximal end of said elongated member and said removable distal end cap of said casing.

6. The handle of claim 5 further comprising a second compression member positioned about said proximal portion of said elongated member between said actuating mechanism and said removable distal end cap of said casing.

7. The handle of claim 5 wherein said actuating mechanism is slidable between first and second positions from said removable distal end cap of said casing and wherein said actuating mechanism includes longitudinal adjustment means for varying a distance between said first and second positions.

8. The handle of claim 1 further comprising a first keyed surface fixedly positioned within said passageway of said casing and a second keyed surface fixedly positioned about said proximal portion of said elongated member and longitudinally engageable with said first keyed surface.

9. The handle of claim 1 wherein said removable distal end cap further includes a proximal end having said first keyed surface extending longitudinally therefrom.

10. The handle of claim 9 further comprising a second keyed surface fixedly positioned about said proximal end of said elongated member and longitudinally engageable with said first keyed surface.

11. The handle of claim 10 further comprising a compression member positioned within said passageway of said casing about said proximal end of said actuation link and between said second keyed surface and said distal end cap.

12. The handle of claim 11 further comprising a second compression member positioned around said proximal portion of said elongated member between said distal end cap and said actuating mechanism.

13. The handle of claim 12 wherein said actuating mechanism is slidable between first and second positions from said distal end cap and wherein said actuating mechanism includes longitudinal adjustment means for varying a distance between said first and second positions.

14. The handle of claim 11 further comprising a compression member positioned within said passageway of said casing, about said proximal portion of said elongated member and between said first and second keyed surfaces.

15. A rotational surgical instrument handle comprising:

a cylindrical casing having a removable distal end cap, a removable proximal end cap, and a longitudinal passageway extending therebetween;

an elongated member having a distal end, a proximal end positioned within said passageway of said casing, a proximal portion positioned through said removable distal end cap and longitudinally slidable between first and second positions with respect to said casing, and a longitudinal passageway extending between said distal and proximal ends thereof;

an actuation link positioned and slidable within said longitudinal passageway of said elongated member and having a distal end and a proximal end extending beyond said proximal end of said elongated member and fixedly connected longitudinally to said removable proximal end cap;

an actuating mechanism positioned distally from said removable distal end cap of said casing and connected about said proximal portion of said elongated member for actuating said elongated member between said first and second positions;

a first keyed surface fixedly positioned about said removable distal end cap of said casing;

a second keyed surface fixedly positioned about said distal end of said elongated member and longitudinally engageable with said first keyed surface; and

a first compression member positioned in said passageway of said casing, about said of proximal end of said actuation link, and between said removable proximal end cap of said casing and said second keyed surface.

16. The handle of claim 15 further comprising a second compression member positioned about said proximal portion of said elongated member between said actuating mechanism and said removable distal end cap of said casing.

17. The handle of claim 15 further comprising pivotedly interconnected jaws connected to said distal end of said actuation link and said elongated member.

18. A rotational surgical instrument comprising:

a cylindrical casing having a distal end, a proximal end, and a longitudinal passageway extending therebetween;

a proximal end cap removably connected to said proximal end of said cylindrical casing;

a distal end cap removably connected to said distal end of said cylindrical casing and having a longitudinal passageway extending therethrough;

pivotedly interconnected first and second jaws having at least first and second positions;

an elongated member having a distal end fixedly connected to said jaws, a proximal end positioned within said passageway of said casing, a proximal portion extending through said passageway of said distal end cap and slidable through said distal end cap, and a longitudinal passageway extending between said distal and proximal ends thereof;

an actuation link positioned and slidable within said longitudinal passageway of said elongated member and having a distal end connected to said second jaw and a proximal end extending beyond said proximal end of said elongated member and fixedly connected longitudinally to said proximal end cap;

a first keyed surface fixedly and laterally positioned about said distal end cap within said passageway of said casing;

a second keyed surface fixedly and laterally positioned about said proximal end of said elongated member and longitudinally engageable with said first keyed surface;

a first compression member positioned within said passageway of said casing about said of proximal end of said actuation link, and between said proximal end cap and said second keyed surface;

an actuating mechanism positioned distally about said distal end cap and connected about said proximal portion of said elongated member for actuating said jaws between said first and second positions, said actuating mechanism being slidably between first and second positions from said proximal end cap and including longitudinal adjustment means for varying a distance between said first and second positions; and

a second compression member positioned about said proximal portion of said elongated member and said distal end cap and said actuating mechanism, said longitudinal adjustment means also varying a compression force of said second compression member.