Wound retractor with gel cap

• US 7,727,146 B2
• Filed: 10/12/2006
• Issued: 06/01/2010
• Est. Priority Date: 10/14/2005
• Status: Active Grant

• Current Assignee: Applied Medical Resources Corporation (Applied Medical Corporation)
• Original Assignee: Applied Medical Resources Corporation (Applied Medical Corporation)
• Inventors: Albrecht, Jeremy J, Gadberry, Donald L, Ko, Jennifer T., Brustad, John R., Hart, Charles C, Johnson, Gary M.
• Primary Examiner(s): Robert; Eduardo C
• Assistant Examiner(s): NEGRELLI, CHRISTINA L
• Application Number:
  US11/548,781
• Publication Number:
  US 20070088204A1
• Time in Patent Office: 1,328 Days
• Field of Search: 600201-246, 606/119, 128/846, 128/856
• US Class Current: 600/208
• CPC Class Codes: A61B 17/02 for holding wounds open; Tractors specula A61B1/32 ; drainage appliances for wounds A61M27/00
• 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 17/0293 with ring member to support retractor elements
• 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 17/3431 being collapsible, e.g. made of thin flexible material A61B17/3423 takes precedence
• 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 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 17/3496 Protecting sleeves or inner probes; Retractable tips for protecting body piercing guide needles A61M25/0612
• 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 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/0225 flexible, e.g. fabrics, meshes, or membranes
• CPC Class Codes: A61B 2017/0287 with elastic retracting members connectable to a frame, e.g. hooked elastic wires
• CPC Class Codes: A61B 2017/3419 Sealing means between cannula and body
• CPC Class Codes: A61B 2017/347 Locking means, e.g. for locking instrument in cannula
• CPC Class Codes: A61B 2050/005 with a lid or cover
• CPC Class Codes: A61B 2050/0051 closable by rotation
• CPC Class Codes: A61B 90/40 Apparatus fixed or close to patients specially adapted for providing an aseptic surgical environment

Abstract

An incrementally adjustable wound retractor, which provides access to a body cavity, includes an inner ring having a diameter greater than the desired diameter of the wound incision, an outer ring having an annular axis and a diameter greater than the desired diameter of the wound incision, and a flexible sleeve disposed in a generally cylindrical form between the inner and outer rings. The outer ring includes first and second circular tubes spaced apart axially with each including a lumen having a rigid, noncompliant split hoop positioned therein. The outer ring may be rolled over itself and around the annular axis to retract the sleeve with sufficient force to stretch the incision to the desired diameter. A gel cap seal may be coupled to the outer ring outside of the biological body to seal the opening produced by the wound retractor between the body cavity and outside the body cavity.

Claims

1. A wound retractor adapted to retract a surgical incision in a biological body wall to a desired diameter, comprising:

a double-tube outer ring having an annular axis, the double-tube outer ring including a first circular tube and a second circular tube that are separated axially, each of the circular tubes including a lumen, the outer ring being adapted for juxtaposition with an outer surface of the body wall and for disposition relative to the incision in the body wall;

an inner ring, the inner ring being adapted for juxtaposition with an inner surface of the body wall and for disposition relative to the incision in the body wall;

a distensible sleeve coupling the outer ring to the inner ring, the sleeve being adapted to traverse the incision in the body wall;

a first substantially noncompliant, split hoop positioned in the lumen of the first circular tube; and

a second substantially noncompliant, split hoop positioned in the lumen of the second circular tube,

wherein, the outer ring being adapted to roll over itself and around the annular axis to roll the sleeve around the outer ring.

2. The wound retractor of claim 1, each of the first and second split hoops functioning as an axle about which the outer ring may turn for half a rotation.

3. The wound retractor of claim 1, the sleeve including a material that is flexible and impermeable to fluids and bacteria.

4. The wound retractor of claim 1, the inner ring being made of materials having sufficient hardness to retain the shape of the inner ring after insertion of the inner ring into a body cavity.

5. The wound retractor of claim 1, the outer ring being made of materials that allow the outer ring to be turned around its annular axis.

6. The wound retractor of claim 1, the first circular tube of the outer ring being coupled to the second circular tube of the outer ring by a web.

7. The wound retractor of claim 1, at least one of the first and second noncompliant, split hoops including a single split about its circumference, the split creating a first end of the split hoop and a second end of the split hoop, the first and second ends of the split hoop substantially abutting each other when the split hoop is in its neutral position.

8. The wound retractor of claim 1, at least one of the first and second noncompliant, split hoops including a single split about its circumference with the split creating a first end of the split hoop and a second end of the split hoop, the split hoop including a space between the first and second ends when the split hoop is in its neutral position.

9. The wound retractor of claim 8, the space between the first and second ends of the split hoop being sufficient to substantially prevent the first and second ends of the split hoop from contacting each other when the split hoop contracts while rolling the sleeve around the outer ring.

10. The wound retractor of claim 1, at least one of the first and second noncompliant, split hoops including two or more splits about the circumference of the split hoop, the splits creating a plurality of hoop portions, each hoop portion including a first end and a second end, the two or more splits being substantially equally spaced about the circumference of the split hoop, the first and second ends of adjacent hoop portions substantially abutting each other when the split hoop is in its neutral position.

11. The wound retractor of claim 1, at least one of the first and second noncompliant, split hoops including two or more splits about the circumference of the split hoop, the splits creating a plurality of hoop portions, each hoop portion including a first end and a second end, the two or more splits being substantially equally spaced about the circumference of the split hoop, the split hoop including a space between the first and second ends of adjacent hoop portions when the split hoop is in its neutral position.

12. The wound retractor of claim 11, the sum of the spaces between the first and second ends of adjacent hoop portions being sufficient to substantially prevent the first and second ends of adjacent hoop portions from contacting each other when the split hoop contracts while rolling the sleeve around the outer ring.

13. A wound retractor adapted to retract a surgical incision in a biological body wall to a desired diameter, comprising:

a double-tube outer ring having an annular axis, the double-tube outer ring including a first circular tube and a second circular tube that are separated axially, each of the circular tubes including a lumen, the outer ring being adapted for juxtaposition with an outer surface of the body wall and for disposition relative to the incision in the body wall, the outer ring being made of materials that allow the outer ring to be turned around its annular axis;

an inner ring, the inner ring being adapted for juxtaposition with an inner surface of the body wall and for disposition relative to the incision in the body wall, the inner ring being made of materials having sufficient hardness to retain the shape of the inner ring after insertion of the inner ring into a body cavity;

a distensible sleeve coupling the outer ring to the inner ring, the sleeve being adapted to traverse the incision in the body wall, the sleeve including a material that is flexible and impermeable to fluids and bacteria;

a first substantially noncompliant, split hoop positioned in the lumen of the first circular tube; and

a second substantially noncompliant, split hoop positioned in the lumen of the second circular tube,

wherein, the outer ring being adapted to roll over itself and around the annular axis to roll the sleeve around the outer ring,

each of the first and second split hoops functioning as an axle about which the outer ring may turn for half a rotation.

14. The wound retractor of claim 13, at least one of the first and second noncompliant, split hoops including a single split about its circumference, the split creating a first end of the split hoop and a second end of the split hoop, the first and second ends of the split hoop substantially abutting each other when the split hoop is in its neutral position.

15. The wound retractor of claim 13, at least one of the first and second noncompliant, split hoops including a single split about its circumference with the split creating a first end of the split hoop and a second end of the split hoop, the split hoop including a space between the first and second ends when the split hoop is in its neutral position.

16. The wound retractor of claim 15, the space between the first and second ends of the split hoop being sufficient to substantially prevent the first and second ends of the split hoop from contacting each other when the split hoop contracts while rolling the sleeve around the outer ring.

17. The wound retractor of claim 13, at least one of the first and second noncompliant, split hoops including two or more splits about the circumference of the split hoop, the splits creating a plurality of hoop portions, each hoop portion including a first end and a second end, the two or more splits being substantially equally spaced about the circumference of the split hoop, the first and second ends of adjacent hoop portions substantially abutting each other when the split hoop is in its neutral position.

18. The wound retractor of claim 13, at least one of the first and second noncompliant, split hoops including two or more splits about the circumference of the split hoop, the splits creating a plurality of hoop portions, each hoop portion including a first end and a second end, the two or more splits being substantially equally spaced about the circumference of the split hoop, the split hoop including a space between the first and second ends of adjacent hoop portions when the split hoop is in its neutral position.

19. The wound retractor of claim 18, the sum of the spaces between the first and second ends of adjacent hoop portions being sufficient to substantially prevent the first and second ends of adjacent hoop portions from contacting each other when the split hoop contracts while rolling the sleeve around the outer ring.