TROCAR ANCHOR

• US 20110021881A1
• Filed: 10/04/2010
• Published: 01/27/2011
• Est. Priority Date: 10/13/2005
• Status: Abandoned Application

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Gresham, Richard D., Wenchell, Thomas
• Application Number:
  US12/896,969
• Publication Number:
  US 20110021881A1
• Time in Patent Office: Days
• US Class Current: 600/227
• 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 2017/3419 Sealing means between cannula and body
• CPC Class Codes: A61B 2017/3484 Anchoring means, e.g. spreading-out umbrella-like structure
• CPC Class Codes: A61B 2017/3486 Balloon

Abstract

Apparatus and methods for providing access to a body cavity without substantial loss of inflation gas therein. The apparatus includes an access assembly that has a tubular member having a proximal end, a distal end, an elastic portion interposed the proximal end and the distal end, and a lumen therethrough. An anchor sleeve is disposed coaxially over the tubular member and has a radially expandable region. The anchor sleeve is moveable between an axially elongated configuration and an axially shortened configuration and is biased toward the axially shortened configuration by a force exerted by the elastic portion of the tubular member. The axially shortened configuration corresponds to the anchor sleeve being in the fully deployed position. Methods for providing anchored access to a cavity within a patient are also disclosed.

Claims

1-11. -11. (canceled)

12. A method for providing anchored access to a cavity within a patient, said method comprising the steps of:

providing a tubular member having an anchor sleeve disposed coaxially over the tubular member, said anchor sleeve having a radially expandable region, wherein the anchor sleeve is moveable between an axially elongated configuration and an axially shortened configuration and is biased toward the axially shortened configuration by a force exerted by an elastic portion of the tubular member;

elongating the anchor sleeve in an axial direction to reduce an outside diameter of the sleeve;

inserting the tubular member and anchor sleeve into a percutaneous opening in a patient; and

returning the anchor sleeve to its biased axially shortened configuration, thereby forming a seal against an inside surface of the dermis of a patient around the percutaneous opening.

13. The method as recited in claim 12 further comprising the step of inserting an obturator into a lumen defined by the tubular member in a distal direction to elongate the elastic portion of the tubular member and the anchor sleeve.

14. The method as recited in claim 13 wherein the obturator engages a distal end portion of the tubular member.

15. The method as recited in claim 13 further comprising the step of removing said obturator from the lumen after inserting the tubular member through the percutaneous opening.

16. The method as recited in claim 12 further comprising the step of insufflating the cavity with a gas, wherein the seal inhibits loss of the gas through the percutaneous opening.

17. The method as recited in claim 12 further comprising the step of axially advancing a flange on a proximal end of said tubular member to clamp against an exterior surface of the dermis of the patient.

18-24. -24. (canceled)