1. An adjustable trocar washer for use with a cannula assembly having an elongate tubular member comprising:
a collar including an outer wall defining an internal opening for accommodating an elongate tubular member, the collar being split along at least a portion of a longitudinal length of the outer wall, to thereby permit the collar to move between at least a first condition where the outer wall defines the internal opening having a first internal dimension and at least a second condition where the outer wall defines the internal opening having a second internal dimension different from the first internal dimension;
a skirt connected to the collar, the skirt extending radially and longitudinally relative to the longitudinal axis of the collar, the skirt dimensioned for being positioned against body tissue; and
a latch member pivotally mounted to the collar, the latch member being selectively and releasably lockable relative to the collar between at least first and second secured positions to respectively releasably secure the collar in the first condition or the second condition thereof whereby the collar engages the elongate tubular member in secured relation.
2. The adjustable trocar washer as recited in claim 1, wherein the collar is configured to be compressed about the elongate tubular member.
3. The adjustable trocar washer as recited in claim 2, including a post on one side of the slit in the collar and the latch member being on the opposing side of the slit in the collar, the latch member engageable with the post to selectively secure the latch member relative to the collar in either the first and second secured positions of the latch member.
4. The adjustable trocar washer as recited in claim 3, wherein the latch member includes first and second openings positionable over the post to secure the collar about the elongate tubular member, the first and second openings corresponding to respective first and second secured positions of the latch member.
5. The adjustable trocar washer as recited in claim 1, wherein the skirt has sufficient flexibility to seal about an incision in the skin.
6. The adjustable trocar washer as recited in claim 5, wherein the skirt comprises a thermoplastic elastomer (TPE).
7. The adjustable trocar washer as recited in claim 1, wherein the collar has a reduced diameter portion at its distal end and the skirt is secured to the collar at the reduced diameter portion.
8. The adjustable trocar washer as recited in claim 1, wherein the collar comprises an elastomeric material.
9. The adjustable trocar washer as recited in claim 1, wherein the latch member is selectively and releasably lockable relative to the collar between the first, the second and a third secured position of the latch member to respectively releasably secure the collar in the first condition, the second condition or a third condition thereof, whereby in the third condition the outer wall defines the internal opening having a third internal dimension different from the first and second internal dimensions.
10. The adjustable trocar washer as recited in claim 9, further comprising a post on one side of the slit in the collar and the latch member on the opposing side of the slit in the collar, the latch member includes first, second and third openings positionable over the post to secure the collar about the elongate tubular member, the first, second and third openings corresponding to respective first, second and third secured positions of the latch member.
11. A cannula assembly for providing access to a body cavity comprising:
an elongate tubular member defining a longitudinal axis and having proximal and distal ends, the elongate member being dimensioned for introduction through body tissue;
an anchor member disposed on the distal end of the elongate tubular member, the anchor member dimensioned for engagement of one side of the body tissue;
an adjustable trocar washer slidably positioned about the elongate tubular member proximal of the anchor member, the adjustable trocar washer defining a longitudinal axis and having an internal dimension, the adjustable trocar washer being split to permit selective increasing or decreasing of the size of the internal dimension; and
a latch member pivotally mounted to the adjustable trocar washer, the latch member being selectively lockable relative to the adjustable trocar washer to secure the adjustable trocar washer in a plurality of positions corresponding to respective different size internal dimensions of the trocar washer to secure the trocar washer about the elongate member, the latch member being releasable from any of the plurality of positions to permit repositioning of the adjustable trocar washer relative to the elongate tubular member.
12. The cannula assembly as recited in claim 11, wherein the anchor member is expandable.
13. The cannula assembly as recited in claim 11, wherein the adjustable trocar washer includes a flexible skirt, the skirt dimensioned for engagement of a second side of the body tissue.
14. The cannula assembly as recited in claim 13, wherein the adjustable trocar washer includes a general longitudinal slit along the longitudinal length thereof.
15. The cannula assembly as recited in claim 14, further comprising a post engageable with the latch member.
16. The cannula assembly as recited in claim 15, wherein the post is positioned on one side of the slit and the latch member is positioned on an opposite side of the slit.
17. The cannula assembly as recited in claim 16, wherein the latch member includes first and second openings for reception of the post, the first and second openings corresponding to a different size internal dimensions of the trocar washer.
18. The adjustable trocar washer as recited in claim 17, wherein the latch member includes first, second and third openings positionable over the post to secure the collar about the elongate tubular member, the first, second and third openings corresponding to respective first, second and third secured positions of the latch member.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A bending brake assembly for manually bending pieces of sheet metal material comprising:
a frame;
a clamping jaw coupled to said frame for movement between a clamped position and an unclamped position;
a bending arm,
a socket connection rotatably supporting said bending arm on said frame for bending a piece of sheet metal material disposed between said clamping jaw and at least one of said frame and said bending arm,
said socket connection including a male portion and a female portion in sliding engagement with one another,
a bearing sleeve being sandwiched between said male portion and said female portion for facilitating relative movement between said male portion and said female portion, and
a first mechanical connection connecting said bearing sleeve to one of said male portion and said female portion,
said first mechanical connection includes a projection and a recess for securing said bearing sleeve to one of said portions.
2. A bending brake assembly as set forth in claim 1 wherein said frame defines said recess extending longitudinally along said frame and said bearing sleeve defines said projection engaged with and extending longitudinally along said recess.
3. A bending brake assembly as set forth in claim 2 wherein said recess is semi-cylindrical and said projection is semi-cylindrical and complimentary to said recess.
4. A bending brake assembly as set forth in claim 1 wherein said female portion and said male portion are arcuate and said bearing sleeve is arcuate and complementary to said male and female portions.
5. A bending brake assembly as set forth in claim 1 wherein said female portion of said frame includes a first semi-cylindrical bearing surface extending longitudinally along said frame and wherein said male portion of said bending arm includes a semi-cylindrical bearing surface complimentary to said first semi-cylindrical bearing surface and wherein said bearing sleeve is semi-cylindrical and complementary to said first and second cylindrical bearing surfaces.
6. A bending brake assembly as set forth in claim 1 wherein said bearing sleeve is formed of a polymer.
7. A bending brake assembly as set forth in claim 1 further including a flexible strap supported by said frame and said bending arm for protective receipt the piece of sheet metal material directly between said flexible strap and said clamping jaw.
8. A bending brake assembly as set forth in claim 7 wherein said flexible strap is disposed between the piece of sheet metal material and the bending arm
9. A bending brake assembly as set forth in claim 8 wherein movement of said bending arm plastically bends the piece of sheet metal material about the clamping jaw and resiliently flexes the flexible strap about the clamping jaw and the piece of sheet metal material.
10. A bending brake assembly as set forth in claim 7 wherein said flexible strap has a first protrusion received in a first groove in said bending arm for locking engagement to said bending arm and wherein said flexible strap has a second protrusion received in a second groove in said frame for locking engagement to said frame.
11. A bending brake assembly as set forth in claim 10 wherein said first protrusion is located beneath said clamping jaw when said bending arm is in a staged position and is located above the clamping jaw when the bending arm is in an operated position.
12. A bending brake assembly as set forth in claim 7 wherein said flexible strap is elastic.
13. A bending brake assembly as set forth in claim 12 further including a second flexible strap that is non-elastic and connected directly between said bending arm and said frame.
14. A bending brake assembly as set forth in claim 7 wherein said flexible strap is made of polyurethane.
15. A bending brake assembly for manually bending pieces of sheet metal material comprising:
a frame;
a clamping jaw coupled to said frame for movement between a clamped position and an unclamped position;
a bending arm,
a socket connection rotatably supporting said bending arm on said frame for bending a piece of sheet metal material disposed between said clamping jaw and at least one of said frame and said bending arm,
said socket connection including a male portion and a female portion in sliding engagement with one another,
a bearing sleeve in contact with said male portion and being sandwiched between said male portion and said female portion for facilitating relative movement between said male portion and said female portion,
wherein said bearing sleeve is formed of a polymer.
16. A bending brake assembly as set forth in claim 15 including a first mechanical connection connecting said bearing sleeve to one of said male portion and said female portion.
17. A bending brake assembly as set forth in claim 16 wherein said first mechanical connection includes a projection and a recess for securing said bearing sleeve to one of said portions.
18. A bending brake assembly as set forth in claim 17 wherein said frame defines said recess extending longitudinally along said frame and said bearing sleeve defines said projection engaged with and extending longitudinally along said recess.
19. A bending brake assembly as set forth in claim 18 wherein said recess is semi-cylindrical and said projection is semi-cylindrical and complimentary to said recess.
20. A bending brake assembly as set forth in claim 15 wherein said female portion and said male portion are arcuate and said bearing sleeve is arcuate and complementary to said male and female portions.
21. A bending brake assembly as set forth in claim 15 wherein said female portion of said frame includes a first semi-cylindrical bearing surface extending longitudinally along said frame and wherein said male portion of said bending arm includes a semi-cylindrical bearing surface complimentary to said first semi-cylindrical bearing surface and wherein said bearing sleeve is semi-cylindrical and complementary to said first and second cylindrical bearing surfaces.
22. A bending brake assembly as set forth in claim 15 further including a flexible strap supported by said frame and said bending arm for protective receipt the piece of sheet metal material directly between said flexible strap and said clamping jaw.
23. A bending brake assembly as set forth in claim 22 wherein said flexible strap is disposed between the piece of sheet metal material and the bending arm.
24. A bending brake assembly as set forth in claim 23 wherein movement of said bending arm plastically bends the piece of sheet metal material about the clamping jaw and resiliently flexes the flexible strap about the clamping jaw and the piece of sheet metal material.
25. A bending brake assembly as set forth in claim 22 wherein said flexible strap has a first protrusion received in a first groove in said bending arm for locking engagement to said bending arm and wherein said flexible strap has a second protrusion received in a second groove in said frame for locking engagement to said frame.
26. A bending brake assembly as set forth in claim 25 wherein said first protrusion is located beneath said clamping jaw when said bending arm is in a staged position and is located above the clamping jaw when the bending arm is in an operated position.
27. A bending brake assembly as set forth in claim 22 wherein said flexible strap is elastic.
28. A bending brake assembly as set forth in claim 27 further including a second flexible strap that is non-elastic and connected directly between said bending arm and said frame.
29. A bending brake assembly as set forth in claim 22 wherein said flexible strap is made of polyurethane.