Medical instrument stabilizer with anchoring system and methods

• US 5,540,648 A
• Filed: 07/13/1994
• Issued: 07/30/1996
• Est. Priority Date: 08/17/1992
• Status: Expired due to Fees

• Current Assignee: Inbae Yoon
• Original Assignee: Inbae Yoon
• Inventors: Yoon, InBae
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): Flanagan, Beverly M.
• Application Number:
  US08/274,401
• Time in Patent Office: 748 Days
• Field of Search: 128/4, 128/20, 128/898, 602/6, 606/1, 606/108, 606/185, 604/174, 604/175, 600/114, 600/208, 600/227, 600/231, 600/233, 600/235, 600/102
• US Class Current: 600/114
• 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 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• 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 2017/3419 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 2017/3488 Fixation to inner organ or inner body tissue
• CPC Class Codes: A61B 2017/3492 against the outside of the body
• CPC Class Codes: A61B 2046/205 Adhesive drapes
• CPC Class Codes: A61B 90/17 for soft tissue, e.g. breast-holding devices
• CPC Class Codes: A61M 2025/0286 anchored in the skin by suture or other skin penetrating devices
• CPC Class Codes: A61M 25/02 Holding devices, e.g. on the body

Abstract

A medical instrument stabilizer for use in endoscopic procedures includes a stabilizer body for being placed against an external surface of an anatomical cavity wall and having a port for receiving medical instruments to be introduced into the anatomical cavity through the stabilizer body and the anatomical cavity wall. An anchoring system carried by the stabilizer body includes a tissue penetrating member movable between a retracted position wherein a tissue penetrating tip of the tissue penetrating member is disposed in a safe, non-exposed position and an extended position wherein the tissue penetrating tip extends from the stabilizer body to penetrate the anatomical wall and anchor the stabilizer thereon. Medical instruments inserted into the anatomical cavity through the port of the stabilizer are secured relative to the stabilizer and, therefore, the anatomical wall. Anchoring of the stabilizer to the anatomical wall by the tissue penetrating member permits manipulation of the anatomical wall by urging the stabilizer and/or the inserted instruments in a desired direction.

Claims

1. A medical instrument stabilizer for use in the performance of endoscopic procedures in an anatomical cavity in the body comprising:

a stabilizer body having a surface for being placed against an external surface of a wall of an anatomical cavity and a port for receiving instruments to be introduced into the anatomical cavity through said stabilizer body and the cavity wall; and

a tissue penetrating member movably carried by said stabilizer body and having a tip extendable from said stabilizer surface and into the cavity wall for anchoring said stabilizer body on the cavity wall, said tissue penetrating member being movable between a retracted position wherein said tip is disposed within said body and an extended position wherein said tip extends from said stabilizer surface.

2. A medical instrument stabilizer as recited in claim 1 and further including a channel in said stabilizer body within in which said tip is disposed in said retracted position, said channel having an opening along said stabilizer surface for extension of said tip from said stabilizer surface.

3. A medical instrument stabilizer as recited in claim 2 and further including means coupled with said tissue penetrating member for moving said tissue penetrating member between said retracted position and said extended position.

4. A medical instrument stabilizer as recited in claim 3 wherein said means for moving includes means for selectively controlling extension of said tip from said stabilizer surface in said extended position.

5. A medical instrument stabilizer as recited in claim 4 wherein said means for moving includes a knob for manually moving said tissue penetrating member through said channel.

6. A medical instrument stabilizer as recited in claim 5 wherein said means for moving permits movement of said tissue penetrating member between said retracted position and a fully extended position and further including a recess along said stabilizer surface for receiving said tip when said tissue penetrating member is in said fully extended position.

7. A medical instrument stabilizer as recited in claim 1 wherein said stabilizer body is made of deformable, shape-retaining material.

8. A medical instrument stabilizer as recited in claim 1 wherein said tissue penetrating member includes a needle.

9. A medical instrument stabilizer as recited in claim 8 wherein said needle has an arcuate configuration.

10. A medical instrument stabilizer as recited in claim 8 wherein said needle has a spiral configuration.

11. A medical instrument stabilizer as recited in claim 1 wherein said stabilizer body has a thickness and said port extends through said thickness of said stabilizer body.

12. A medical instrument stabilizer as recited in claim 1 wherein said stabilizer body includes a plurality of ports.

13. A medical instrument stabilizer as recited in claim 1 wherein said port includes means for securing medical instruments inserted through said port relative to said stabilizer body.

14. A medical instrument stabilizer as recited in claim 1 wherein said stabilizer body carries a plurality of said tissue penetrating members.

15. A method of stabilizing a medical instrument in endoscopic operative procedures in an anatomical cavity comprising the steps of:

placing a stabilizer body on an external surface of a wall of the anatomical cavity;

extending a tissue penetrating member from the stabilizer body to penetrate the anatomical wall to anchor the stabilizer body on the anatomical wall, said step of extending including moving the tissue penetrating member from a retracted position within the body to an extended position extending from the lower surface;

inserting a medical instrument through a port of the stabilizer body and the anatomical wall to enter the anatomical cavity; and

securing the medical instrument relative to the stabilizer body.

16. A method of stabilizing a medical instrument as recited in claim 15 wherein said step of placing includes placing a lower surface of the stabilizer body on the external surface of the anatomical wall.

17. A method of stabilizing a medical instrument as recited in claim 15 wherein said step of extending includes manually moving the tissue penetrating member.

18. A method of stabilizing a medical instrument as recited in claim 17 wherein said step of manually moving includes moving a knob coupled with the tissue penetrating member along a channel of the stabilizer body.

19. A method of stabilizing a medical instrument as recited in claim 17 wherein said step of manually moving includes rotating a knob coupled with the tissue penetrating member.

20. A method of stabilizing a medical instrument as recited in claim 15 wherein said step of extending includes controlling extension of the tissue penetrating member from the stabilizer body.

21. A method of stabilizing a medical instrument in endoscopic operative procedures in an anatomical cavity comprising the steps of:

placing a stabilizer body on an external surface of a wall of the anatomical cavity;

extending a tissue penetrating member from the stabilizer body to penetrate the anatomical wall to anchor the stabilizer body on the anatomical wall;

inserting a medical instrument through a port of the stabilizer body and the anatomical wall to enter the anatomical cavity;

securing the medical instrument relative to the stabilizer body; and

manipulating the anatomical wall by moving the inserted medical instrument in a desired direction.