Endoscopic surgical access port and method

• US 6,811,546 B1
• Filed: 08/25/2000
• Issued: 11/02/2004
• Est. Priority Date: 08/25/2000
• Status: Expired due to Term

• Current Assignee: Maquet Cardiovascular LLC (Getinge AB)
• Original Assignee: Origin Medsystems Inc. (Boston Scientific Corporation)
• Inventors: Callas, Peter, Wei, Michael, Lunsford, John P., Chin, Albert K.
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US09/648,660
• Time in Patent Office: 1,530 Days
• Field of Search: 606/190-194, 606/108, 606/1, 606/174, 606/185, 604/167--16, 604/174, 604/23-26, 604/167-1-1, 604/167.06
• US Class Current: 604/167.06
• CPC Class Codes: A61B 17/00008 Vein tendon strippers tube strippers A61M1/83
• CPC Class Codes: A61B 17/3421 Cannulas
• 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 2017/3486 Balloon

Abstract

A sliding gas-tight seal on an access port promotes insufflation of an anatomical space formed in tissue at a surgical site only during insertion of an endoscopic instrument through the access port into the anatomical space, and promotes deflation of the inflated space upon removal of the endoscopic instrument from within the access port. An inflatable balloon disposed about the port near the distal end may be selectively expanded to seal and anchor the access port within an incision through which a surgical procedure with insufflation is to be performed. Multiple resilient seals may be attached to the body of the port, and an auxiliary resilient seal may be inserted within the aperture of a seal attached to the body to accommodate a wide range of endoscopic instruments of various exterior dimensions inserted through the seals.

Claims

1. A body for an access port for insufflating a surgical site, comprising:

the body including a central bore therethrough from a distal end to a proximal end thereof and including on an outer wall thereof near the distal end an attachment site for an inflatable balloon;

a fluid passage within a wall of the body communicating with the attachment site and with a fluid inlet to form a fluid channel for selectively inflating a balloon at the attachment site with fluid under pressure supplied to the inlet;

the body including near the proximal end thereof an attachment rim for receiving thereat a resilient sealing member to form a fluid-tight seal with the body and with an aperture therein substantially aligned with central bore; and

the body including an insufflation inlet disposed intermediate the distal and proximal ends in communication with the central bore.

2. The body of an access port according to claim 1 including a section intermediate the proximal and distal ends for transitioning from the central bore near the distal end to a larger internal bore near the proximal end.

3. The body of an access port according to claim 2 in which the insufflation inlet communicates with the central bore and larger internal bore within the transition section.

4. The body of an access port according to claim 2 in which the fluid inlet is disposed proximate the transition section of the body and near the insufflation inlet.

5. The body of an access port according to claim 1 in which the attachment rim includes a recessed groove within an outer wall of the body near the proximal end thereof for receiving a resilient sealing member therein in fluid-tight seal with the body.

6. A sealing member for an insufflation access port having a body with a central bore therethrough between distal and proximal ends thereof, the sealing member for attachment to the proximal end of the body, comprising:

a hollow cylinder of resilient material having a distal end dimensioned to insert within the central bore of the body at the proximal end thereof and including an outwardly extending flange integrally formed on the proximal end of the cylinder to overlay the proximal end of the body, the flange including an aperture therethrough in position to substantially align with the central bore of the body upon attachment thereto for receiving therein an endoscopic instrument in fluid-tight sliding sealing engagement within the aperture; and

a protruding ring integrally formed about the cylinder near the distal end thereof for deforming within the central bore of the body to form a fluid-tight seal therewith.

7. The sealing member according to claim 6 for attachment to the body of an access port having a recessed groove about the periphery of the body near the proximal end thereof, the flange of the sealing member comprising:

a substantially cylindrical section extending substantially concentrically with the hollow cylinder toward the distal end thereof to overlay the proximal end of the body and terminate with an inwardly intruding rim integrally formed with the cylinder section and the flange and the hollow cylinder, said rim being dimensioned and positioned to engage the recessed groove about the periphery of the body in fluid-tight sealing engagement therein; and

an intruding ring integrally formed on said intruding rim for deforming within the recessed groove to form a fluid-tight seal therein.

8. An auxiliary sealing member for insertion within the aperture of the sealing member of claim 6, comprising:

a hollow cylinder of resilient material including an end segment integrally formed on a proximal end of the cylinder having an aperture therethrough, and having an outwardly protruding flange integrally formed about a distal end thereof, the hollow cylinder of the auxiliary sealing member being dimensioned to form a fluid-tight seal within the aperture of the sealing member, and the protruding flange on the distal end of the auxiliary sealing member being disposed to engage the distal end of the sealing member for retaining the auxiliary sealing member within the aperture of the sealing member.