Surgical anvil and system for deploying the same

• US 20060201989A1
• Filed: 03/13/2006
• Published: 09/14/2006
• Est. Priority Date: 03/11/2005
• Status: Abandoned Application

• Current Assignee: Board of Regents of the University of Texas System (University of Texas System)
• Original Assignee: Board of Regents of the University of Texas System (University of Texas System)
• Inventors: Ojeda, Herminio F.
• Application Number:
  US11/375,355
• Publication Number:
  US 20060201989A1
• Time in Patent Office: Days
• US Class Current: 227/175.100
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 17/1114 of the digestive tract, e.g. bowels or oesophagus
• 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

A system for deploying an anvil in a subject comprises a tube having a first open end, a second open end and a lumen that extends between the respective first and second ends. The system further comprises an anvil configured to selectively move between a compressed and an expanded position. In one aspect, in the expanded position, at least a portion of the anvil is configured to form staples fired by the surgical stapling device after the anvil is expelled from the second open end of the tube.

Claims

1. A system for deploying an anvil for use with a surgical stapling device, comprising:

a tube having a first open end, a second open end and a lumen extending therebetween the first and second ends;

an anvil for use with the surgical stapling device, the anvil comprising a shaft member with a distal portion configured for engagement with the stapling device and a head member, wherein the head member is moveable between an intraluminal position and an extraluminal position, the intraluminal position being configured for slideable movement of the anvil thorough the tube lumen, and at least a portion of the extraluminal position being configured to form staples fired by the surgical stapling device after the anvil is expelled from the lumen through the second open end; and

a means for slideably moving the anvil though the lumen of the tube and for expelling the anvil through the second open end of the tube.

2. The system of claim 1, wherein the anvil advancing means comprises a plunger having a proximal operating portion, a distal anvil advancing portion and a shaft portion extending therebetween.

3. The system of claim 2, wherein the plunger is at least as long as the elongate length of the tube.

4. The system of claim 1, wherein the tube is in the range of about 20 French to about 50 French in size.

5. The system of claim 4, wherein the tube is in the range of about 20.0 centimeters (cm) to about 100.0 (cm) in length.

6. The system of claim 1, wherein the tube is an orogastric tube.

7. The system of claim 6, wherein the tube comprises a sizing balloon about its second open end for sizing a gastric pouch in a subject.

8. The system of claim 7, wherein the sizing balloon is inflatable with a volume of about 15 millileters (mL) to about 100 millileters (mL) of a gas or liquid.

9. The system of claim 1, wherein the head member is configured to move from its extraluminal position to its intraluminal position by deflection of the distal surface of the head member radially inward toward the shaft member of the anvil, and to move from its intraluminal position to its extraluminal position by deflection of the distal surface of the head member radially outward away from the shaft member of the anvil.

10. The system of claim 9, further comprising a means for biasing the head member from its intraluminal position to its extraluminal position.

11. The system of claim 9, wherein the anvil comprises material having shape memory such that the head is urged to move from its intralumial position to its extraluminal position based on the shape memory of the material.

12. The system of claim 1, wherein the head member is configured to move from its extraluminal position to its intraluminal position by deflection of the proximal surface of the head member radially toward the longitudinal axis of the shaft member of the anvil, and to move from its intraluminal position to its extraluminal position by deflection of the proximal surface of the head member radially away from the longitudinal axis of the shaft member of the anvil.

13. The system of claim 12, further comprising a means for biasing the head member from its intraluminal position to its extraluminal position.

14. The system of claim 12, wherein the anvil comprises material having shape memory such that the head is urged to move from its intralumial position to its extraluminal position based on the shape memory of the material.

15. The system of claim 1, wherein the head member is pivotally moveable relative to the longitudinal axis of the shaft member, and is configured to move from its extraluminal position to its intraluminal position by pivoting relative to the longitudinal axis of the shaft member, wherein, in the extraluminal position, the head member is substantially perpendicular to the longitudinal axis of the shaft member, and wherein, in the intraluminal position, the head member is generally parallel to the longitudinal axis of the shaft member.

16. The system of claim 1, wherein the head member has a diameter from about 20.0 millimeters (mm) to about 35.0 (mm) in its extraluminal position.

17. The system of claim 1, wherein the distal surface of the head member has a plurality of staple forming recesses defined thereon to form staples fired against the recesses by the surgical stapling device.

18. The system of claim 17, wherein the plurality of staple forming recesses are concentrically arranged thereon the distal surface and proximate to the periphery of the head member.

19. The system of claim 1, wherein at least a portion of the distal surface of the head member in its extraluminal position defines a tissue cutting surface for approximation with a blade of the surgical stapling device.

20. An anvil for use with a surgical stapling system having a surgical stapling device and a tube, comprising:

a shaft member with a distal portion configured for engagement with the stapling device; and

a head member, wherein the head member is moveable between an intraluminal position and an extraluminal position, wherein the head member is configured to move from its extraluminal position to its intraluminal position by deflection of the head member toward the longitudinal axis of the shaft member of the anvil, and to move from its intraluminal position to its extraluminal position by deflection of the head member away from the longitudinal axis of the shaft member of the anvil upon exit from the tube, wherein, in the extraluminal position, at least a portion of the head is configured to form staples fired by the stapling device, wherein, in the intraluminal position, the head of the anvil is configured for slidable movement therethrough the tube.

21. The anvil of claim 20, wherein the head member is configured to move from its extraluminal position to its intraluminal position by deflection of the distal surface of the head member radially inward toward the shaft member of the anvil, and to move from its intraluminal position to its extraluminal position by deflection of the distal surface of the head member radially outward away from the shaft member of the anvil.

22. The anvil of claim 21, further comprising a means for biasing the head member from its intraluminal position to its extraluminal position.

23. The anvil of claim 21, wherein the anvil comprises material having shape memory for its extraluminal position such that the head moves between its intralumial position and its extraluminal position based on the shape memory of the material.

24. The anvil of claim 20, wherein the head member is configured to move from its extraluminal position to its intraluminal position by deflection of the proximal surface of the head member radially toward the longitudinal axis of the shaft member of the anvil, and to move from its intraluminal position to its extraluminal position by deflection of the proximal surface of the head member radially away from the longitudinal axis of the shaft member of the anvil at a position proximal to the shaft member.

25. The anvil of claim 24, further comprising a means for biasing the head member from its intraluminal position to its extraluminal position.

26. The anvil of claim 24, wherein the anvil comprises material having shape memory such that the head is urged to move from its intralumial position to its extraluminal position based on the shape memory of the material.

27. The anvil of claim 20, wherein the head member is pivotally moveable relative to the longitudinal axis of the shaft member, and is configured to move between its extraluminal position and its intraluminal position by pivoting relative to the longitudinal axis of the shaft member, wherein, in the extraluminal position, the head member is substantially perpendicular to the longitudinal axis of the shaft member, and wherein, in the intraluminal position, the head member is generally parallel to the longitudinal axis of the shaft member.

28. The anvil of claim 20, wherein the head member has a diameter from about 20.0 millimeters (mm) to about 35.0 millimeters (mm) in its extraluminal position.

29. The anvil of claim 20, wherein the distal surface of the head member has a plurality of staple forming recesses defined thereon to form staples fired against the recesses by the surgical stapling device.

30. The anvil of claim 29, wherein the plurality of staple forming recesses are concentrically arranged thereon the distal surface and proximate to the periphery of the head member.

31. The anvil of claim 20, wherein at least a portion of the distal surface of the head member in its extraluminal position defines a tissue cutting surface for approximation with a blade of the surgical stapling device.