Locking pivotal surgical orifice

• US 5,279,575 A
• Filed: 08/13/1992
• Issued: 01/18/1994
• Est. Priority Date: 08/13/1992
• Status: Expired due to Fees

• Current Assignee: Brigham and Women's Hospital Incorporated
• Original Assignee: Brigham and Women's Hospital Incorporated
• Inventors: Sugarbaker, David J.
• Primary Examiner(s): ASCHENBRENNER, PETER
• Application Number:
  US07/929,729
• Time in Patent Office: 523 Days
• Field of Search: 606/1, 604/104-109, 604/174, 604/175, 604/178
• US Class Current: 604/174
• 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 17/3417 Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating syringe needles A61M5/32; dilators A61M29/00
• CPC Class Codes: A61B 2017/347 Locking means, e.g. for locking instrument in cannula
• CPC Class Codes: A61B 2017/3484 Anchoring means, e.g. spreading-out umbrella-like structure
• CPC Class Codes: A61B 2017/3492 against the outside of the body

Abstract

A device for use during endoscopic surgery for temporarily maintaining an open passageway through a body wall into a body cavity having a main hollow tube, a pair of extendable flukes pivotably mounted on the tube, a second hollow tube for camming the flukes open and clamping means for engagement with the skin of a patient and a third hollow tube for compressing the flukes in order that the device may be inserted into and removed from the incision.

Claims

1. A device for use during endoscopic surgery for temporarily maintaining an open passageway through a body wall into a body cavity comprising:

a main hollow tube having a leading end insertable through the wall into the cavity,

a pair of extendable flukes pivotably mounted on the leading end of the main hollow tube,

a second hollow tubular member slidable within the main hollow tube for camming the flukes into an extended position to engage the interior of the wall and for providing an open passageway into the cavity, and

clamping means movably mounted on the main hollow tube for engagement with the exterior of the body wall to clamp the device to the wall when the flukes are in the extended clamping position against the interior of the wall.

4. Device according to claim 1 wherein there are means for preventing movement between the second hollow tubular member and the main hollow tube when the second hollow tubular member has cammed the flukes into the extended position.

7. Device according to claim 1 wherein there are means for securing a medical instrument in the second hollow tubular member.

10. Device according to claim 1 wherein the clamping means is rotatable on the main tubular body and pivotable about an axis extending transversely of the main tubular body.

14. Device according to claim 4 wherein the means for preventing movement is a split collet and nut.

17. Device according to claim 7 wherein the medical instrument clamping means is a split collet and nut on the second hollow tubular member.

2. A device for use during endoscopic surgery for temporarily maintaining an open passageway through a body wall into a body cavity comprising:

a main hollow tube having a leading end insertable through the wall into the cavity,

a pair of extendable flukes pivotably mounted on the leading end of the main hollow tube,

a second hollow tubular member slidable within the main hollow tube for camming the flukes into an extended position to engage the interior of the wall and for providing an open passageway into the cavity,

clamping means movably mounted on the main hollow tube for engagement with the exterior of the body wall to clamp the device to the wall when the flukes are in the extended clamping position against the interior of the wall, and

a third tube slidable on the main hollow tube into engagement with the flukes to compress them toward the main hollow tube to enable the device to be inserted into and removed from the body cavity.

5. Device according to claim 2 wherein there are means for preventing movement between the second hollow tubular member and the main hollow tube when the second hollow tubular member has cammed the flukes into the extended position.

8. Device according to claim 2 wherein there are means for securing a medical instrument in the second tubular member.

11. Device according to claim 2 wherein the clamping means is rotatable on the main tubular body and pivotable about an axis extending transversely of the main tubular body.

15. Device according to claim 5 wherein the means for preventing movement is a split collet and nut.

18. Device according to claim 8 wherein the medical instrument clamping means is a split collet and nut on the second hollow tubular member.

3. A device for use during endoscopic surgery for temporarily maintaining an open passageway through a body wall into a body cavity comprising:

a main hollow tube having a central axis and a leading end insertable through the wall into the cavity,

a pair of extendable flukes pivotably mounted on the leading end of the main hollow tube,

a second hollow tubular member slidable within the main hollow tube for camming the flukes away from the central axis and into an extended position to engage the interior of the wall and for providing an open passageway into the cavity, clamping means movably mounted on the main hollow tube for engagement with the exterior of the body wall to clamp the device to the wall when the flukes are in the extended clamping position against the interior of the wall,

a third tube slidable on the main hollow tube into engagement with the flukes to compress them toward the central axis of the main hollow tube to enable the device to be inserted into and removed from the body cavity, and

means for pivoting the clamping means relative to the central axis to adjust the angle of the device relative to the body wall.

6. Device according to claim 3 wherein there are means for preventing movement between the second hollow tubular member and the main hollow tube when the second hollow tubular member has cammed the flukes into the extended position.

9. Device according to claim 3 wherein there are means for securing a medical instrument in the second tubular member.

12. Device according to claim 3 wherein the clamping means is rotatable on the main tubular body and pivotable about an axis extending transversely of the central axis of the main tubular body.

13. Device according to claim 3 wherein the clamping means and the means for pivoting it are secured to and slide with the second hollow tubular member.

16. Device according to claim 6 wherein the means for preventing movement is a split collet and nut.

19. Device according to claim 9 wherein the medical instrument clamping means is a split collet and nut on the second hollow tubular member.