Expandable Surgical Access Port

• US 20120143008A1
• Filed: 11/16/2011
• Published: 06/07/2012
• Est. Priority Date: 08/12/2010
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Wilkins, Rebecca Ann, Copeland, Thomas John Hector, Beckett, Trevor, O'Prey, Cormac, Brady, Daniel, Chan, Wai Ting, Fuller, Daniel Leonard, Silk, Christopher John
• Granted Patent: US 8,961,408 B2
• Time in Patent Office: Days
• US Class Current: 600/206
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/0293 with ring member to support retractor elements
• 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 17/3431 being collapsible, e.g. made of thin flexible material A61B17/3423 takes precedence
• CPC Class Codes: A61B 17/3439 with means for changing the inner diameter of the cannula, e.g. expandable A61B17/3423, A61B17/3431 take precedence; catheters A61M25/0662
• 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 2017/00424 ergonomic, e.g. fitting in fist
• CPC Class Codes: A61B 2017/0225 flexible, e.g. fabrics, meshes, or membranes
• CPC Class Codes: A61B 2017/0237 for heart surgery endoscopic heart surgery A61B2017/00243; endoscopic access devices, i.e. trocars, A61B17/34
• CPC Class Codes: A61B 2017/0287 with elastic retracting members connectable to a frame, e.g. hooked elastic wires
• CPC Class Codes: A61B 2017/3427 for intercostal space
• CPC Class Codes: A61B 2017/347 Locking means, e.g. for locking instrument in cannula

Abstract

A surgical access assembly for positioning within an opening in tissue including an outer frame positionable outside a patient and defining an opening therein dimensioned to receive a surgical instrument therethrough. The outer frame includes a first portion, a second portion and a locking portion. An inner member is positionable within a patient and a flexible member extends between the inner member and outer frame and is spreadable by actuation of the outer frame.

Claims

1. A surgical access assembly for positioning within an opening in tissue, the surgical access assembly comprising:

an outer frame positionable outside a patient and defining an opening therein dimensioned to receive a surgical instrument therethrough, the outer frame including a first portion, a second portion and a locking portion, a region of the second portion overlying a region of the first portion and underlying a region of the locking portion, the locking portion locking the first and second portions;

an inner member positionable within a patient; and

a flexible member extending between the inner member and outer frame, the flexible member spreadable by actuation of the outer frame.

2. The surgical access assembly of claim 1, wherein the locking portion locks the first and second portions in a plurality of select spread positions to maintain the flexible member in a select spread position.

3. The surgical access assembly of claim 2, wherein the second portion includes a first engagement structure and a second engagement structure spaced from the first engagement structure, and the first portion includes a third engagement structure and a fourth engagement structure, the first engagement structure engageable with the third engagement structure and the second engagement structure engagable with the fourth engagement structure.

4. The surgical access assembly of claim 3, wherein the locking portion is relatively movable with respect to the second portion from a first position wherein the first and second engagement structures are out of engagement with the third and fourth engagement structures to a second position wherein the first and second engagement structures are in engagement with the third and fourth engagement structures.

5. The surgical access assembly of claim 4, wherein the locking portion has a camming surface to cam the first and second engagement structures into the second position.

6. The surgical access assembly of claim 4, wherein each of the third and fourth engagement structures include a series of spaced apart raised surfaces.

7. The surgical access assembly of claim 2, further comprising a nerve protecting member extending from the inner member, the nerve protecting member extending in a direction toward the outer member.

8. The surgical access assembly of claim 1, further comprising a cushioning material positioned on an undersurface of the outer frame.

9. The surgical access assembly of claim 1, wherein the first portion includes a plurality of raised surfaces on an upper surface and the second portion includes a pivoting arm engageable with the raised surfaces.

10. The surgical access assembly of claim 9, wherein the raised surfaces include a plurality of disc-like members arranged in a plurality of rows.

11. The surgical access assembly of claim 1, wherein the second portion includes a first engagement structure, the first engagement structure biased to an unlocked position.

12. The surgical access assembly of claim 1, wherein the flexible member includes a plurality of tensioning bands positioned at a proximal region thereof.

13. The surgical access assembly of claim 3, wherein the first engagement structure includes a first set of projections and the third engagement structure includes a third set of projections, the first set of projections engageable with the third set of projections and being out of phase with the third set of projections when in a locking position.

14. A surgical access assembly for positioning within an opening in tissue, the surgical access assembly comprising:

an outer frame positionable outside a patient and defining an opening therein dimensioned to receive a surgical instrument therethrough, the outer frame including a first portion, a second portion and a locking portion, the second portion having a first engagement structure engagable with the first portion, the first and second portions relatively movable in a direction away from each other to select spread positions, and the locking portion and the second portion being relatively movable to lock the first and second portions in select spread positions;

an inner member positionable within a patient; and

a flexible member extending between the inner member and outer frame, the flexible member spreadable by the relative movement of the first and second portions in the direction away from each other.

15. The surgical access assembly of claim 14, wherein the first portion has a first indentation for a user'"'"'s finger and the second portion has a second indentation for the user'"'"'s finger.

16. The surgical access assembly of claim 15, wherein the locking portion has a third indentation for a user'"'"'s finger.

17. The surgical access assembly of claim 14, wherein the locking portion has a camming surface to cam the engagement structure into engagement with the first portion.

18. The surgical access assembly of claim 14, wherein the second portion includes a second engagement structure spaced from the first engagement structure, the first and second engagement structures engageable with respective third and fourth engagement structures on the first portion.

19. The surgical access assembly of claim 18, wherein the first and second engagement structures are on opposing sides of the second portion and the locking portion has first and second surfaces joined by a transverse member extending in a direction transverse to the direction of relative movement of the first and second portions.

20. The surgical access assembly of claim 14, wherein the first engagement structure has a first position out of engagement with the first portion and a second position in engagement with the first portion, the first and second positions dependent on the relative positions of the locking portion and the second portion.