Methods and devices for providing access into a body cavity

• US 8,357,088 B2
• Filed: 12/11/2009
• Issued: 01/22/2013
• Est. Priority Date: 12/11/2009
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Shelton, Frederick E. IV, Morgan, Jerome R., Farrell, Theodore R.
• Primary Examiner(s): Truong, Kevin T
• Assistant Examiner(s): Waggle, Jr., Larry E
• Application Number:
  US12/635,762
• Publication Number:
  US 20110144448A1
• Time in Patent Office: 1,138 Days
• Field of Search: 600201-206, 600208-219, 600224-234, 606107-109, 606/167, 606/170, 606184-185, 606193-194, 606/198, 606/323, 604/95.02, 60428801-28803, 604/513, 604/264, 604/506, 604/164.1, 604/164.11, 604106-108
• US Class Current: 600/215
• 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 17/3439 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 2017/00407 Ratchet means
• CPC Class Codes: A61B 2017/00991 Telescopic means
• CPC Class Codes: A61B 2017/3443 with means for adjusting the length of a cannula
• CPC Class Codes: A61B 2017/3484 Anchoring means, e.g. spreading-out umbrella-like structure

Abstract

Methods and devices are provided for providing surgical access into a body cavity. In general, the methods and devices allow a surgical access device to be securely positioned within an opening in tissue to provide access to a body cavity underlying the tissue. An actuator can be rotatably disposed on or in a housing of a surgical access device such that rotation of the actuator relative to the housing is effective to move a cannula of the surgical access device between an insertion configuration in which the cannula has a reduced profile enabling it to easily be inserted into a tissue opening, and an expanded profile enabling it to form an anchor against and/or within the tissue opening.

Claims

1. An adjustable access device, comprising:

a housing having an adjustable cannula extending distally therefrom, the adjustable cannula being formed of a plurality of fibers woven into a mesh material and being movable between an insertion configuration and a deployed configuration in which a distal portion of the cannula retroflexes upward and radially outward toward a proximal portion of the cannula to form an anchor configured for stabilizing the access device; and

a rotatable actuator disposed on the housing and configured to move the cannula between the insertion configuration and the deployed configuration, wherein the rotatable actuator is, configured to decrease a length of at least some of the plurality of fibers extending from the housing to move the cannula to the deployed configuration.

2. The adjustable access device of claim 1, wherein the cannula is configured to telescope within the housing in the insertion configuration.

3. The adjustable access device of claim 1, wherein the anchor has a diameter greater than a diameter of the proximal portion of the cannula.

4. An adjustable access device, comprising:

a housing;

a cannula formed of a weave of fibers extending distally from the housing, the housing and the cannula defining a working channel extending therethrough for receiving instruments; and

an actuator rotatably disposed on the housing such that rotation of the actuator in a first direction relative to the housing is effective to cause a distal portion of the cannula to retroflex upward and radially outward into a deployed configuration to form a distal anchor to engage tissue, wherein a first group of fibers from the weave of fibers is coupled to the actuator, and a second group of fibers from the weave of fibers is not coupled to the actuator.

5. The adjustable access device of claim 4, wherein the distal anchor includes a distal rim configured to engage tissue when the distal anchor is in the deployed configuration.

6. The access device of claim 4, wherein rotation of the actuator in the first direction is effective to shorten a length of the first group of fibers.

7. The adjustable access device of claim 6, wherein the second group of fibers is configured to maintain an original length when the actuator is rotated in the first direction.

8. The adjustable access device of claim 4, wherein the housing includes multiple sealing ports formed therein.

9. The adjustable access device of claim 4, wherein the actuator is rotatable in a second opposite direction to move the anchor portion of the cannula from the deployed configuration to an insertion configuration in which the cannula has a substantially constant outer diameter.

10. The adjustable access device of claim 4, wherein the cannula is configured to telescope longitudinally through the housing when the actuator is rotated in the first direction.

11. The adjustable access device of claim 4, wherein the anchor portion has a diameter substantially greater than a diameter of the cannula when in the deployed configuration.

12. The adjustable access device of claim 4, further comprising at least one sealing element disposed within the working channel, the at least one sealing element being effective to form at least one of a seal around an instrument inserted through the working channel and a seal across the working channel when no instrument is inserted through the working channel.