Fluid removal in a surgical access device

• US 9,033,929 B2
• Filed: 09/07/2012
• Issued: 05/19/2015
• Est. Priority Date: 04/28/2008
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Moreno, Cesar E., Minnelli, Patrick J., Gilker, Thomas A., Mumaw, Daniel J., Mollere, Rebecca J., Tanguay, Randall
• Primary Examiner(s): Mehta, Bhisma
• Assistant Examiner(s): WILSON, LARRY ROSS
• Application Number:
  US13/606,564
• Publication Number:
  US 20120330099A1
• Time in Patent Office: 984 Days
• Field of Search: 604158-163, 604/164.01, 604/164.08, 60416701-16706, 604/256
• US Class Current: 604/167.06
• CPC Class Codes: A61B 1/122 using cleaning tools, e.g. brushes
• CPC Class Codes: A61B 1/126 provided with means for cleaning in-use
• 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 2017/3437 with means for removing or absorbing fluid, e.g. wicks or absorbent pads
• CPC Class Codes: A61B 2017/3464 with means acting on inner surface of valve or seal for expanding or protecting, e.g. inner pivoting fingers

Abstract

The present invention generally provides methods and devices for removing fluid from a surgical instrument. Surgical access devices and seal systems are generally provided having one or more valves or seal assemblies to create a closed system between the outside environment and the environment in which the surgical access device is being inserted. In one embodiment, a seal assembly is provided and can include a seal having an opening configured to receive a surgical instrument therethrough and a fluid remover in the form of a sorbent element, a scraper element, a wicking element, or any combination thereof can be associated with the seal and configured to remove fluid from the opening and/or a surgical instrument.

Claims

1. A seal assembly for use in a surgical access device, comprising:

a seal including a proximal flange having a sidewall extending distally therefrom, the seal being selectively movable between an open position when an instrument is disposed therethrough and a sealed closed position when no instrument is disposed therethrough; and

a fluid remover positioned distal to a distal end of the seal, the fluid remover comprising

a substantially planar scraper having an opening formed therethrough, the scraper being configured to remove fluid from a surgical instrument passed through the opening, and the opening being configured to allow air to pass therethrough when no instrument is disposed therein, and

a sorbent element positioned distal of the scraper for sorbing fluid removed from a surgical instrument by the scraper.

2. The seal assembly of claim 1, wherein the fluid remover further includes a wicking element for wicking fluid.

3. The seal assembly of claim 1, wherein the scraper includes a plurality of channels formed therein and extending from the opening to an outer perimeter thereof for wicking fluid away from the opening.

4. The seal assembly of claim 1, wherein the sorbent element extends distally from the scraper and has a central opening formed therein.

5. The seal assembly of claim 1, wherein the scraper is substantially circumferential and the sorbent element is semi-circular.

6. The seal assembly of claim 1, wherein the scraper includes a wicking element configured to wick fluid scraped off of an instrument by the scraper toward the sorbent element.

7. The seal assembly of claim 1, wherein the seal comprises a zero-closure seal.

8. A method for removing fluid from a surgical access device, comprising:

passing a surgical instrument through a seal in a working channel of a surgical access device extending into a body cavity, the seal moving from a sealed, closed position in which the working channel is sealed to an open position when the surgical instrument is passed therethrough, wherein a substantially planar scraper disposed distal of the seal and having an opening formed therethrough removes fluid from the surgical instrument to prevent fluid from being deposited on the seal, the opening being configured to allow air to pass therethrough when no instrument is disposed therein, and wherein a sorbent element disposed distal of the scraper sorbs fluid off of the scraper.

9. The method of claim 8, wherein, the surgical instrument is passed through an opening in the scraper that scrapes fluid off of the surgical instrument.

10. The method of claim 9, wherein the fluid remover further comprises a wicking element that wicks fluid away from the opening in the scraper.

11. The method of claim 10, wherein the fluid remover further comprises a reservoir that contains fluid that is wicked away from the scraper by the wicking element.

12. The method of claim 8, wherein the surgical instrument is passed through a second seal that forms a seal around the surgical instrument.

13. The method of claim 8, further comprising viewing the body cavity using a camera disposed on a distal end of the surgical instrument.