Tissue stabilizer having an articulating lift element

• US 6,406,424 B1
• Filed: 09/16/1999
• Issued: 06/18/2002
• Est. Priority Date: 09/16/1999
• Status: Expired due to Fees

• Current Assignee: Maquet Cardiovascular LLC (Getinge AB)
• Original Assignee: George A. Keller, Harry Leonard Ii Green, Mark Ortiz, Paul A. Spence, Warren P. Williamson IV
• Inventors: Ortiz, Mark, Williamson, Warren P. IV, Keller, George A., Spence, Paul A., Green, Harry Leonard II
• Primary Examiner(s): Reip, David O.
• Assistant Examiner(s): Woo, Julian W.
• Application Number:
  US09/398,535
• Time in Patent Office: 1,006 Days
• Field of Search: 606/199, 600/201, 600/205, 600/206, 600/210, 600/235, 600/232, 269/21, 269/22, 601/6, 601/13
• US Class Current: 600/201
• CPC Class Codes: A61B 1/32 Devices for opening or enlarging the visual field, e.g. of a tube of the body dilators A61M29/00
• CPC Class Codes: A61B 17/02 for holding wounds open; Tractors specula A61B1/32 ; drainage appliances for wounds A61M27/00
• CPC Class Codes: A61B 2017/0243 for immobilizing local areas of the heart, e.g. while it beats
• CPC Class Codes: A61B 2017/306 holding by means of suction

Abstract

Devices and methods are disclosed for stabilizing tissue within a patient'"'"'s body during a surgical operation to provide a relatively motionless surgical field, such as during a coronary artery bypass graft procedure. The devices include tissue stabilizers which engage and provide stabilization to a targeted area of tissue and further have the ability to engage and manipulate some portion of tissue within or adjacent the targeted area to improve the surgical presentation of that portion of tissue. The tissue stabilizer typically has one or more stabilizer feet which have a first foot portion configured to provide stabilization to the targeted tissue and a second foot portion moveable relative to the first foot portion for manipulating a portion of tissue to improve the surgical presentation.

Claims

1. A device for stabilizing tissue within a patient'"'"'s body for performing a surgical procedure on said tissue comprising:

at least one stabilizer foot having a first portion and a second portion coupled to said first portion, said first portion being sufficiently rigid to facilitate effective immobilization of a first area on the surface of said tissue and having a tissue engaging surface adapted to engage the first area on the surface of said tissue; and

said second portion having a vacuum chamber with at least one opening adapted to engage a second area on the surface of said tissue, said second portion being moveable relative to said first portion whereby movement of said second portion relative to said first portion manipulates the second area of tissue relative to said first area of tissue.

2. The device of claim 1 wherein said second portion moves upwardly relative to said first portion.

3. The device of claim 2 further comprising a raised seal disposed around the perimeter of said tissue engaging surface.

4. The device of claim 3 wherein said raised seal is compressible.

5. The device of claim 1 wherein said second portion is made of a flexible material.

6. The device of claim 5 wherein said flexible material is an elastomer.

7. The device of claim 5 wherein said flexible material is selected from the group consisting of silicone, urethane rubber, nitrile rubber, hytrel, and kraton.

8. A device for stabilizing tissue within a patient'"'"'s body for performing a surgical procedure on said tissue comprising:

at least one stabilizer foot having a first portion and a second portion coupled to said first portion, said first portion being substantially rigid and having a tissue engaging surface adapted to engage a first area on the surface of said tissue; and

said second portion having a vacuum chamber with at least one opening adapted to engage a second area on the surface of said tissue, said second portion being moveable relative to said first portion whereby movement of said second portion relative to said first portion manipulates the second area of tissue relative to said first area of tissue;

wherein said first portion has a vacuum chamber and said tissue engaging surface has at least one opening in fluid communication with said vacuum chamber.

9. A device for stabilizing tissue within a patient'"'"'s body for performing a surgical procedure on said tissue comprising:

at least one stabilizer foot having a first portion and a second portion coupled to said fist portion, said first portion being substantially rigid and having a tissue engaging surface adapted to engage a first area on the surface of said tissue; and

said second portion having a vacuum chamber with at least one opening adapted to engage a second area on the surface of said tissue, said second portion being moveable relative to said first portion whereby movement of said second portion relative to said first portion manipulates the second area of tissue relative to said first area of tissue;

wherein said tissue engaging surface comprises a textured surface adapted to frictionally engage said first area on the surface of said tissue.

10. A device for stabilizing tissue within a patient'"'"'s body for performing a surgical procedure on said tissue comprising:

at least one stabilizer foot having a first portion and a second portion coupled to said first portion, said first portion being substantially rigid and having a tissue engaging surface adapted to engage a first area on the surface of said tissue;

said second portion having a vacuum chamber with at least one opening adapted to engage a second area on the surface of said tissue, said second portion being moveable relative to said first portion whereby movement of said second portion relative to said first portion manipulates the second area of tissue relative to said first area of tissue; and

a tension member having a proximal end and a distal end, said distal end of said tension member connected to said second portion.

11. The device of claim 10 wherein said proximal end of said tension member is connected to a tensioning mechanism.

12. The device of claim 11 wherein said tensioning mechanism comprises a channel adapted to receive said tension member and a locking member positioned at an angle relative to said channel and having a free end biased against the interior of said channel.

13. The device of claim 11 wherein said tensioning mechanism comprises a pivoting member having a pivot axis and said proximal end of said tension member is attached to said pivoting member at a predetermined distance from said pivot axis.

14. The device of claim 11 wherein said tensioning mechanism comprised a spool having an outer surface, said proximal end of said tension member being operably connected to said outer surface.

15. The device of claim 10 wherein said tension member is a thread material.

16. The device of claim 10 wherein said tension member is a flexible wire.

17. The device of claim 10 wherein said tension member is a cable.

18. A device for stabilizing tissue within a patient'"'"'s body for performing a surgical procedure on said tissue comprising:

at least one stabilizer foot having a first portion and a second portion coupled to said first portion, said first portion being substantially rigid and having a tissue engaging surface adapted to engage a first area on the surface of said tissue; and

said second portion having a vacuum chamber with at least one opening adapted to engage a second area on the surface of said tissue, said second portion being moveable relative to said first portion whereby movement of said second portion relative to said first portion manipulates the second area of tissue relative to said first area of tissue;

wherein said device comprises a first stabilizer foot and a second stabilizer foot substantially parallel to said first stabilizer foot, each of said first stabilizer foot and said second stabilizer foot having a first portion and a second portion coupled to said first portion, said first portion being substantially rigid and having a tissue engaging surface adapted to engage a first area on the surface of said tissue; and

said second portion having a vacuum chamber with at least one opening adapted to engage a second area on the surface of said tissue, said second portion being moveable relative to said first portion whereby movement of said second portion relative to said first portion manipulates the second area of tissue relative to said first area of tissue.

19. A device for stabilizing tissue within a patient'"'"'s body comprising at least one stabilizer foot having a first foot portion adapted to engage a first portion of tissue and a second foot portion having a vacuum space having at least one opening adapted to engage a second portion of tissue immediately adjacent said first portion of tissue, said second foot portion articulating with respect to said first foot portion.

20. The device of claim 19 wherein said second foot portion defines a vacuum space having a perimeter edge adapted to seal against said second portion of tissue.

21. The device of claim 19 wherein said second foot portion comprises an elastomeric material.

22. A device for stabilizing tissue within a patient'"'"'s body comprising at least one stabilizer foot having a first portion adapted to engage a first portion of tissue and a second foot portion having a vacuum space having at least one opening adapted to engage a second portion of tissue immediately adjacent said first portion of tissue, said second foot portion being flexibly coupled to said first foot portion;

and a tension member having a proximal end and a distal end, said distal end being operably connected to said second foot portion, whereby pulling on said proximal end causes said second foot portion to move relative to said first foot portion.

23. A device for stabilizing tissue within a patient'"'"'s body comprising at least one stabilizer foot having a first portion adapted to engage a first portion of tissue and a second foot portion having a vacuum space having at least one opening adapted to engage a second portion of tissue immediately adjacent said first portion of tissue, said second foot portion being flexibly coupled to said first foot portion, and wherein said first foot portion has a vacuum chamber having at least one opening adapted to engage said first portion of tissue.

24. A device for stabilizing tissue within a patient'"'"'s body comprising at least one stabilizer foot having a first portion adapted to engage a first portion of tissue and a second foot portion having a vacuum space having at least one opening adapted to engage a second portion of tissue immediately adjacent said first portion of tissue, said second foot portion being flexibly coupled to said first foot portion, and wherein said first foot portion has a textured surface adapted to frictionally engage said first portion of tissue.