Surgical instrument configured to be disassembled for cleaning

• US 5,603,723 A
• Filed: 01/11/1995
• Issued: 02/18/1997
• Est. Priority Date: 01/11/1995
• Status: Expired due to Term

• Current Assignee: United States Surgical Corporation (Medtronic Plc)
• Original Assignee: United States Surgical Corporation (Medtronic Plc)
• Inventors: Aranyi, Ernie, Cuny, Douglas J.
• Primary Examiner(s): Buiz, Michael Powell
• Assistant Examiner(s): LEWIS, WILLIAM W
• Application Number:
  US08/371,251
• Time in Patent Office: 769 Days
• Field of Search: 606/51, 606/52, 606/174, 606/205-211, 128/750-755, 604/22
• US Class Current: 606/205
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable
• CPC Class Codes: A61B 2017/2837 with a locking ratchet
• CPC Class Codes: A61B 2017/292 connection of actuating rod to handle, e.g. ball end in recess
• CPC Class Codes: A61B 2017/2946 Locking means
• CPC Class Codes: A61B 2090/0813 Accessories designed for easy sterilising, i.e. re-usable

Abstract

A surgical apparatus is disclosed which includes a handle assembly having a barrel portion, a stationary handle depending from the barrel portion, and an actuating handle pivotally associated with the barrel portion. An elongate body assembly having opposed proximal and distal end portions and an interior bore extending therethrough is releasably engaged within the barrel portion of the handle assembly. An actuation assembly is provided and includes an elongate control shaft dimensioned to extend through the interior bore of the body assembly. A jaw housing is attached to a distal end portion of the control shaft, and a pair of jaw members are supported in the housing. The jaw housing is releasably engaged to the body assembly within the interior bore thereof, and a proximal end of the control shaft is releasably engaged to the actuation handle. A release button is mounted in the barrel portion of the handle assembly and includes a spring biased clasp for releasably engaging the control shaft adjacent the proximal end thereof.

Claims

1. A surgical apparatus configured to be disassembled for cleaning and reassembled for utilization comprising:

a) a handle assembly including a barrel portion and an actuation handle pivotally associated with the barrel portion;

b) an elongate body assembly having opposed proximal and distal end portions and an interior bore extending therethrough, a proximal end portion of the elongate body releasably engaged within the barrel portion of the handle assembly;

c) an elongate control shaft dimensioned to extend through the interior bore of the body assembly and having opposed proximal and distal end portions, a jaw housing attached to the distal end portion of the control shaft, and a pair of jaw members supported in the housing and actuable by the control shaft, the jaw housing releasably engaged to the body assembly within the interior bore thereof; and

d) an engaging mechanism associated with the barrel portion of the handle assembly, the engaging mechanism releasably engaging the control shaft adjacent the proximal end thereof, whereby pivotal movement of the actuation handle effectuates cooperative movement of the jaw members between open and closed positions.

2. A surgical apparatus as recited in claim 1, wherein the proximal end portion of the elongate body assembly is releasably engaged within the barrel portion of the handle assembly by a bayonette-type connection.

3. A surgical apparatus as recited in claim 2, wherein the bayonette-type connection includes an engagement slot formed in the proximal end portion of the body assembly and a corresponding engagement pin provided in the barrel portion of the handle assembly.

4. A surgical apparatus as recited in claim 1, wherein the jaw housing is releasably engaged to the body assembly by a bayonette-type connection.

5. A surgical apparatus as recited in claim 4, wherein the bayonette-type connection includes an engagement slot formed in the jaw housing and a corresponding engagement pin provided in the interior bore of the body assembly adjacent a distal end thereof.

6. A surgical apparatus as recited in claim 1, wherein the engaging mechanism comprises a release button mounted in the barrel portion of the handle assembly which includes a spring biased clasp for engaging a circumferential engagement slot formed on the control shaft adjacent the proximal end thereof.

7. A surgical apparatus as recited in claim 1, wherein a wiping member is supported on the control shaft adjacent the proximal end thereof and is configured to clean the interior bore of the elongate body assembly when the control shaft is withdrawn from the body assembly during disassembly of the apparatus.

8. A surgical apparatus as recited in claim 7, wherein the wiping member including a plurality of spaced apart circumferential wiping wings dimensioned to engage an interior wall surface of the body assembly.

9. A surgical apparatus as recited in claim 7, wherein the wiping member is formed of a resilient polymeric material.

10. A surgical apparatus as recited in claim 1, further comprising a rotation control mechanism including a rotation knob operatively associated with the elongate body assembly for rotating the body assembly about a longitudinal axis extending therethrough relative to the handle assembly.

11. A surgical apparatus as recited in claim 1, further comprising a ratchet mechanism operatively associated with the stationary handle and the actuation handle of the handle assembly, the ratchet mechanism selectively maintaining the relative positions thereof.

12. A surgical apparatus as recited in claim 11, wherein the ratchet mechanism includes a toggle switch positioned on the stationary handle and configured to lock the ratchet mechanism in a selected orientation.

13. A surgical apparatus as recited in claim 12, wherein the ratchet mechanism includes a toggle switch positioned on the actuation handle and configured to lock the ratchet mechanism in a selected orientation.

14. A surgical apparatus as recited in claim 1, further comprising an electrocautery fitting operatively associated with the body assembly and a contact member configured to electrically connect the electrocautery fitting and the control shaft.

15. A surgical apparatus as recited in claim 1, wherein said handle assembly is configured for disassembly into a plurality of subassemblies including an extension shaft for connecting the control shaft to the actuation handle.

20. A surgical apparatus as recited in claim 1, wherein a wiping member including a plurality of spaced apart circumferential wiping wings is supported on the control shaft adjacent the proximal end thereof to clean the interior bore of the elongate body assembly when the actuation assembly is withdrawn from the body assembly during disassembly of the apparatus.

21. A surgical apparatus as recited in claim 1, further comprising a rotation control knob operatively associated with the elongate body assembly, wherein movement of the rotation control knob effects rotation of the body assembly about a longitudinal axis extending therethrough relative to the handle assembly.

16. A surgical apparatus configured to be disassembled for cleaning and reassembled for utilization comprising:

a) a handle assembly including a barrel portion having an interior bore, and an actuation handle pivotally associated with the barrel portion;

b) an elongate body assembly having opposed proximal and distal end portions and an interior bore extending therethrough, a proximal end portion of the elongate body releasably engaged within the interior bore of the barrel portion of the handle assembly by a first bayonette-type connection;

c) an elongate control shaft dimensioned to extend through the interior bore of the body assembly and having opposed proximal and distal end portions, a jaw housing attached to the distal end portion of the control shaft, and a pair of jaw members supported in the housing and actuable by the control shaft, the jaw housing releasably engaged to the body assembly within the interior bore thereof by a second bayonette-type connection; and

d) a spring biased release button mounted in the barrel portion of the handle assembly, the release button releasably engaging the control shaft adjacent the proximal end thereof, said control shaft being further connected to the actuation handle such that movement of the actuation handle effectuates cooperative movement of the jaw members between open and closed positions.

17. A surgical apparatus as recited in claim 16, wherein the first bayonette-type connection includes an engagement slot formed in the proximal end portion of the body assembly and a corresponding engagement pin provided in the barrel portion of the handle assembly.

18. A surgical apparatus as recited in claim 17, wherein the second bayonette-type connection includes an engagement slot formed in the jaw housing and a corresponding engagement pin provided in the interior bore of the body assembly adjacent a distal end thereof.

19. A surgical apparatus as recited in claim 16, wherein the release button includes a spring biased clasp configured to engage a circumferential engagement slot formed on the control shaft adjacent the proximal end thereof.

22. A surgical apparatus configured to be disassembled following a surgical procedure comprising:

a) a handle assembly including a barrel portion defining an interior bore;

b) an elongated body assembly releasably engaged within the interior bore of the barrel portion, the elongated body defining an interior bore;

c) a control shaft releasably engaged within the interior bore of the body assembly and operatively connected to the handle assembly;

d) a tool assembly operatively associated with a distal end portion of the body assembly and actuable by the control shaft; and

e) a wiping member operatively associated with at least one of the body assembly and the control shaft for cleaning the interior bore of at least one of the barrel portion and the body assembly when the apparatus is disassembled following a surgical procedure.