Surgical hand access apparatus

• US 20050222582A1
• Filed: 04/05/2005
• Published: 10/06/2005
• Est. Priority Date: 04/05/2004
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Wenchell, Thomas
• Granted Patent: US 7,393,322 B2
• Time in Patent Office: Days
• US Class Current: 606/108
• CPC Class Codes: A61B 1/313 for introducing through surgical openings, e.g. laparoscopes
• CPC Class Codes: A61B 17/3423 Access ports, e.g. toroid shape introducers for instruments or hands access sites for liquids A61M39/0247
• CPC Class Codes: A61B 17/3462 with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals expandable cannulas A61B17/3417
• CPC Class Codes: A61B 17/3498 Valves therefor, e.g. flapper valves, slide valves haemostasis valves A61M39/06; check valves A61M39/24
• CPC Class Codes: A61B 2017/00265 Hand assisted surgery, i.e. minimally invasive surgery with at least part of an assisting hand inside the body
• CPC Class Codes: A61B 2017/3482 inside
• CPC Class Codes: A61B 2017/3484 Anchoring means, e.g. spreading-out umbrella-like structure
• CPC Class Codes: A61B 2017/3492 against the outside of the body

Abstract

A surgical access apparatus includes a liner base and an access housing for positioning outside the body. The liner base includes an inner member adapted for insertion through an opening within body tissue for positioning within the body; a sleeve member connected to the inner member and dimensioned to extend from the inner member through the opening within the body tissue, and a plurality of tensioning elements connected to the inner member and associated with the sleeve member to impart a tensioning effect on the sleeve member. The access housing includes a first element and a second element. The second element is operatively connected to the tensioning elements and adapted for rotational movement relative to the first member to cause the tensioning elements to displace the inner member toward the access housing and to cause the sleeve member to engage and retract tissue defining the opening within the body. The tensioning members are adapted to move relative to the sleeve member upon rotation of the second element and may be embedded within the sleeve member. A seal is preferably mounted to the access housing and is adapted to form a fluid tight seal about an object inserted therethrough. A zero closure valve may also be mounted relative to the liner member for forming a fluid tight seal in the absence of an object positioned therethrough. The second member of the access housing is adapted to be selectively secured at a predetermined rotational relationship with respect to the first member to provide for selective tensioning of the tensioning elements and selective retraction of tissue.

Claims

1. A surgical access apparatus, which comprises:

an inner member adapted for insertion through an opening within body tissue for positioning within the body;

at least one tensioning element extending from the inner member; and

an outer member for positioning outside the body, the outer member including a first element and a second element, the second element operatively connected to the at least one tensioning element and adapted for rotational movement relative to the first member to cause retraction of tissue defining the opening within the body.

2. The surgical access apparatus according to claim 1 wherein the at least one tensioning element is connected to the inner member.

3. The surgical apparatus according to claim 2 wherein the at least one tensioning element is adapted to displace the inner member toward the outer member upon rotation of the second element.

4. The surgical access apparatus according to claim 3 including a plurality of tensioning elements.

5. The surgical access apparatus according to claim 4 wherein the second member is adapted to rotate relative to the first member to reduce effective lengths of the tensioning elements to displace the inner member toward the outer member into engagement with an internal body wall and to retract the tissue defining the opening.

6. The surgical access apparatus according to claim 1 further comprising a liner member connected to the inner member and dimensioned to extend from the inner member through the opening within the body tissue, the liner member opening a passageway therethrough for permitting passage of an object.

7. The surgical access apparatus according to claim 6 wherein the tensioning elements are embedded within the liner member.

8. The surgical access apparatus according to claim 7 wherein the tensioning elements are movable relative to the liner member.

9. The surgical access apparatus according to claim 2 wherein the second element is adapted to be secured at a predetermined angular orientation relative to the first element to selectively tension the at least one tensioning element.

10. The surgical apparatus according to claim 9 wherein the second element is adapted to be secured at a plurality of predetermined angular relationships relative to the first member.

11. The surgical apparatus according to claim 5 including means for selectively securing the first and second elements at a plurality of relative angular relationships.

12. The surgical apparatus according to claim 11 wherein the means for selectively securing includes a ratchet and pawl mechanism associated with the first and second elements.

13. The surgical access apparatus according to claim 1 including a seal mounted relative to passageway of the liner member, the seal adapted to form a fluid tight seal about an object inserted therethrough.

14. The surgical access apparatus according to claim 13 including a zero closure valve mounted relative to the liner member, the zero closure valve adapted to form a fluid tight seal in the absence of an object positioned therethrough.

15. The surgical access apparatus according to claim 14 wherein the zero-closure valve is a duck bill valve.

16. A surgical access apparatus, which comprises:

a liner base including;

an inner member adapted for insertion through an opening within body tissue for positioning within the body;

a sleeve member connected to the inner member and dimensioned to extend from the inner member through the opening within the body tissue, the sleeve member defining a passageway therethrough for permitting passage of an object; and

a plurality of tensioning elements connected to the inner member and associated with the sleeve member to impart a tensioning effect on the sleeve member; and

an access housing for positioning outside the body, the access housing including a first element and a second element, the second element operatively connected to the tensioning elements and adapted for rotational movement relative to the first member to cause the tensioning elements to displace the inner member toward the access housing and to cause the sleeve member to engage and retract tissue defining the opening within the body.

17. The surgical access apparatus according to claim 16 wherein the tensioning members are adapted to move relative to the sleeve member upon rotation of the second element.

18. The surgical access apparatus according to claim 17 wherein the tensioning members are embedded within the sleeve members.

19. The surgical access apparatus according to claim 16 including a seal mounted to the access housing, the seal adapted to form a fluid tight seal about an object inserted therethrough.

20. The surgical access apparatus according to claim 19 including a zero closure valve mounted relative to the liner member, the zero closure valve adapted to form a fluid tight seal in the absence of an object positioned therethrough.

21. The surgical apparatus according to claim 16 wherein the second member is adapted to be selectively secured at a predetermined rotational relationship with respect to the first member.