Intraluminal anastomotic surgical stapler with detached anvil

• US 5,104,025 A
• Filed: 09/28/1990
• Issued: 04/14/1992
• Est. Priority Date: 09/28/1990
• Status: Expired due to Term

• Current Assignee: Ethicon Incorporated (Johnson & Johnson)
• Original Assignee: Ethicon Incorporated (Johnson & Johnson)
• Inventors: Main, Lauren O., Bilotti, Federico
• Primary Examiner(s): Rosenbaum, Mark
• Assistant Examiner(s): RADA, RINALDI I
• Application Number:
  US07/590,404
• Time in Patent Office: 564 Days
• Field of Search: 227/175, 227/179, 227/180, 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 17/34 Trocars; Puncturing needles pointed biopsy instruments A61B10/0233; devices for piercing the ear-lobes A44C7/001; seals or hemostasis valves A61M39/06
• CPC Class Codes: A61B 2017/07257 characterised by its anvil

Abstract

A surgical stapling mechanism with an integral trocar is disclosed. This trocar contains an alignment mechanism which causes the anvils on the stapler to align with the staples held within the head portion. A unique latching mechanism is disclosed, and a sleeve which covers the sharp trocar tip is provided.

Claims

1. A surgical stapling device comprising:

a plurality of staples, said staples initially contained in a head portion;

an anvil portion into which said staples may be ejected from said head portion, said anvil portion detachable from said head portion;

said head portion containing a shaft with a longitudinal axis and having an integral trocar with a sharpened generally conical tip, said sharpened tip having aligning means displayed radially about said tip extending and parallel to said shaft longitudinal axis for aligning said tip with said anvil portion; and

wherein said anvil portion further contains an anvil head having a plurality of staple clinching anvils and attached to an elongated sleeve with a hollow interior and said anvil head further containing a plurality of ribs placed radially within said sleeve hollow exterior, said ribs aligning with said trocar tip aligning means.

2. The device of claim 1 wherein said aligning means comprises a plurality of grooves engageable with said ribs such that said staples are aligned with said anvils on said anvil portion when said ribs are inserted into said grooves.

3. The device of claim 2 wherein said anvil portion contains a latching mechanism which is engageable with said trocar tip.

4. The device of claim 3 wherein said latching mechanism further contains a release mechanism which enables said anvil portion to be released from said trocar tip.

5. The device of claim 4 wherein said latching mechanism is a spring loaded clip engageable about said trocar.

6. The device of claim 5 wherein said release mechanism contains a manually operated wedge operable to release said spring loaded clip from about said trocar.

7. The device of claim 3 wherein said trocar tip contains engagement means engageable with said latching mechanism.

8. The device of claim 3 wherein said trocar shaft contains an indented ridge around which is engageable said latching means.

9. The device of claim 2 wherein said trocar tip is protected by a spring loaded sleeve, said sleeve retractable to expose said tip upon the insertion of said anvil portion elongated sleeve over said trocar.

10. The device of claim 2 wherein said trocar tip is retractable into the head portion of said device with said anvil connected to said trocar.

11. The device of claim 2 wherein said tip is retractable into said head through operation of a retracting means connected to said tip along the shaft of said head portion.

12. The device of claim 11 wherein said retracting means comprise a screw mechanism operable to retract said trocar tip into said head portion.

13. A surgical stapling device comprising:

a plurality of staples, said staples initially contained in a head portion;

an anvil portion into which said stapled may be ejected from said head portion, said anvil portion detachable from said head portion; and

said head portion containing a shaft having a longitudinal axis and with an integral trocar having a sharpened generally conical tip, and aid trocar tip containing a plurality of grooves parallel with said shaft longitudinal axis.

14. The device of claim 13, wherein said anvil portion contains an elongated sleeve, said sleeve containing an opening through which is placed said trocar tip.

15. The device of claim 14 wherein said trocar tip is protected by a spring loaded sleeve, said sleeve retractable to expose said tip upon the insertion of said anvil portion elongated sleeve over said trocar.

16. The device of claim 14 wherein said anvil portion contains an anvil head connected to said elongated sleeve, said anvil head having a plurality of ribs displayed radially about an inner diameter, and said plurality of trocar tip grooves align with said ribs upon insertion of said tip into said elongated sleeve and said head.

17. The device of claim 13 wherein said anvil portion contains a latching mechanism for latching said anvil portion to said trocar tip.

18. The device of claim 17 wherein said latching mechanism further contains a release mechanism which enables said anvil portion to be released from said trocar tip.

19. The device of claim 17 wherein said trocar tip contains engagement means for engaging said latching mechanism.

20. The device of claim 17 wherein said latching mechanism is a spring loaded clip engageable about said trocar.

21. The device of claim 17 wherein said trocar contains a shaft having an indented ridge around which is engageable said latching means.

22. A surgical stapling device comprising:

a plurality of staples, said staples initially contained in a head portion;

an anvil portion into which said staples may be ejected from said head portion, said anvil portion detachable from said head portion;

said head portion containing a shaft with a trocar having a sharpened tip upon which may be attached said anvil portion, and said head portion further containing a first elongated sleeve, said first elongated sleeve attached to said trocar by spring means; and

wherein said trocar tip may be exposed upon the exertion of force on said sleeve, and wherein said anvil portion is attachable to said exposed trocar tip.

23. The device of claim 22 further containing retracting means connected to said trocar tip, said trocar tip retractable into said head portion with said anvil attached thereon by use of said retracting means.

24. The device of claim 23 wherein said anvil portion contains a second elongated sleeve, said second sleeve containing an opening through which is placed said trocar tip.

25. The device of claim 23 wherein said anvil portion contains a latching mechanism which is engageable with said trocar tip.

26. The device of claim 25 wherein said latching mechanism further contains a release mechanism which enables said anvil portion to be released from said trocar tip.

27. The device of claim 25 wherein said trocar tip contains engagement means for engaging said latching mechanism.

28. The device of claim 25 wherein said latching mechanism is a spring loaded clip engageable about said trocar.

29. The device of claim 25 wherein said trocar contains a shaft having an indented ridge around which is engageable said latching means.

30. The device of claim 25 wherein said anvil portion contains an anvil head connected to said elongated sleeve, said anvil head having a plurality of ribs displayed radially about an inner diameter, and said trocar contains a plurality of grooves displayed radially about said tip, said grooves aligning with said ribs upon insertion of said tip into said elongated sleeve and said head.

31. A surgical stapling device comprising:

a plurality of staples, said staples initially contained in a head portion;

an anvil portion into which said staples may be ejected from said head portion, said anvil portion detachable from said head portion;

said head portion further containing a shaft having a longitudinal axis, and an integral trocar having a sharpened tip, and further containing retracting means, said trocar tip retractable into a retracted position on said shaft along said longitudinal axis by operation of said retracting means; and

wherein said anvil portion contains a latching mechanism engageable with said trocar tip and operable to keep said anvil releasably engaged to said head portion, and further wherein said anvil portion is not releasable from said head portion when said anvil portion is attached to said head portion with said trocar tip in its retracted position.

32. The device of claim 31 wherein said anvil portion contains an elongated sleeve, said sleeve containing an opening through which is placed said trocar tip.

33. The device of claim 31 wherein said latching mechanism further contains a release mechanism which enables said anvil portion to be released from said trocar tip.

34. The device of claim 31 wherein said trocar tip contains engagement means for engaging said latching mechanism.

35. The device of claim 31 wherein said latching mechanism is a spring loaded clip engageable about said trocar.

36. The device of claim 35 wherein said release mechanism contains a manually operated wedge operable to release the grip of said spring loaded clip from about said trocar tip.

37. The device of claim 31 wherein said trocar contains a shaft having an indented ridge around which is engageable said latching means.

38. The device of claim 31 wherein said trocar tip is protected by a spring loaded sleeve, said sleeve retractable to expose said tip upon the insertion of said anvil portion elongated sleeve over said trocar.

39. The device of claim 31 wherein said anvil portion contains an anvil head connected to said elongated sleeve, said anvil head having a plurality of ribs displayed radially about an inner diameter, and said trocar contains a plurality of grooves displayed radially about said tip, said grooves aligning with said ribs upon insertion of said tip into said elongated sleeve and said head.

40. The device of claim 31 wherein said retracting means comprise a screw mechanism operable to retract said trocar tip into said head portion.