Insertion device for surgical apparatus

• US 5,836,503 A
• Filed: 04/22/1996
• Issued: 11/17/1998
• Est. Priority Date: 04/22/1996
• Status: Expired due to Term

• Current Assignee: United States Surgical Corporation (Medtronic Plc)
• Original Assignee: United States Surgical Corporation (Medtronic Plc)
• Inventors: Ehrenfels, Karl H., Schnut, Robert H.
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US08/636,104
• Time in Patent Office: 939 Days
• Field of Search: 227/175.1, 227/175.2, 227/176.1, 227/178.1, 227/179.1, 227/180.1, 227/19
• US Class Current: 227/175.1
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 2017/07257 characterised by its anvil

Abstract

An insertion device is provided for use with surgical tissue fastening apparatus. The insertion device includes a head having an atraumatic leading surface and a shaft extending proximally therefrom. The shaft includes attachment structure for detachable engagement with surgical tissue fastening apparatus. The atraumatic leading structure aids in insertion of the surgical apparatus during a stapling procedure. The shaft, in combination with the head, can also be dimensioned and configured to prevent activation of a surgical tissue fastening apparatus while installed thereon. The insertion device can also include structure to protect and retain fasteners contained within the surgical tissue fastening apparatus. Further, the disclosed insertion devices can be constructed so as to reduce overall weight and alleviate suction effects associated with insertion and retraction.

Claims

1. An insertion device for use with a surgical tissue fastening apparatus comprising:

a) a shaft configured for engagement with a surgical tissue fastening apparatus; and

b) a head on a distal end of the shaft, the head having an atraumatic distal surface and an anvilless proximal surface.

2. The insertion device of claim 1, wherein the atraumatic distal surface is an uninterrupted blunt surface.

3. The insertion device of claim 1, wherein the head is formed integrally with the shaft.

4. The insertion device of claim 1, wherein the head is formed by injection molding of a plastic material.

5. The insertion device of claim 1, wherein the shaft is formed of stainless steel.

6. The insertion device of claim 1, wherein the shaft is solid and has attachment structure formed adjacent a proximal end thereof.

7. The insertion device of claim 6, wherein the distance between a proximal end of the head and the attachment structure is sufficiently short to disable a safety mechanism of a surgical tissue fastening apparatus.

8. The insertion device of claim 1, wherein the shaft has a tapered conical tip formed on a proximal end of the shaft.

9. The insertion device of claim 1, wherein the head has an atraumatic and substantially rounded proximal end.

10. The insertion device of claim 1, further comprising a circumferential proximal facing flange extending from a proximal end of the head.

11. The insertion device of claim 10, wherein the flange is configured and dimensioned to overlap a distal end of a surgical tissue fastening apparatus.

12. The insertion device of claim 10, further comprising a plurality of proximally extending projections formed on a proximal end of the head, the projections configured for partial insertion within staple pockets formed in a distal end of a surgical tissue fastening apparatus.

13. The insertion device of claim 12, further comprising alignment structure on the shaft, the alignment structure aligning the projections with the staple pockets.

14. The insertion device of claim 1, wherein the shaft is hollow.

15. The insertion device of claim 14, wherein the hollow shaft is adapted to receive a conical tip formed on a distal end of a rod extending from a surgical instrument.

16. The insertion device of claim 14, wherein the distance between a proximal end of the head and the proximal end of the hollow shaft is sufficiently short to disable a safety mechanism of a surgical tissue fastening apparatus.

17. An anvilless insertion device for use with a surgical tissue fastening apparatus comprising:

a) a shaft configured for engagement with a surgical tissue fastening apparatus; and

b) a head on distal end of the shaft.

18. The insertion device of claim 17 wherein a distal portion of the head is conical.

19. The insertion device of claim 17 wherein a proximal end of the head has a substantially flat face.

20. The insertion device of claim 19 wherein the flat face has a radius substantially equal to a radius of distal end of a surgical tissue fastening apparatus used therewith.

21. The insertion device of claim 19 wherein the head includes a plurality of radially spaced recesses extending inwardly into the head.

22. The insertion device of claim 17 wherein the proximal end of the shaft includes attachment structure engageable with corresponding retaining structure of a surgical tissue fastening apparatus.

23. The insertion device of claim 17 wherein the shaft is solid.