Barbed suture created having barbs defined by variable-angle cut
First Claim
Patent Images
1. A barbed surgical suture comprising:
- a suture thread having an end, a longitudinal axis and an exterior surface, with a needle attached to the end of the suture thread;
a plurality of barbs disposed along the exterior surface of said suture thread;
each barb being at least one of, rotationally displaced around the longitudinal axis of the suture thread, and axially displaced along the longitudinal axis of the suture thread, relative to each adjacent barb;
each barb having a tip and as base;
each bath being defined by a cut into the exterior surface of said suture thread;
wherein the cut has an angle relative to the longitudinal axis of the suture thread which changes between the tip of each barb and the base of each barb; and
wherein the barbed surgical suture is adapted for use in surgical applications to hold closed a surgical or traumatic wound in tissue.
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Abstract
A barbed suture is disclosed having barbs defined by a variable-angle cut surface. A cutting bed supports the suture during cutting. A cutting device is moved through the suture thread along a selected path. The angle of the cutting device is changed during cutting so that there is a corresponding change in the angle of the cut surface which defines each barb. A cutting arm is articulated to allow change of the angle of the cutting device. The change in the angle of the cutting device is used to control the shape and depth of cut of the barbs.
670 Citations
22 Claims
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1. A barbed surgical suture comprising:
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a suture thread having an end, a longitudinal axis and an exterior surface, with a needle attached to the end of the suture thread; a plurality of barbs disposed along the exterior surface of said suture thread; each barb being at least one of, rotationally displaced around the longitudinal axis of the suture thread, and axially displaced along the longitudinal axis of the suture thread, relative to each adjacent barb; each barb having a tip and as base; each bath being defined by a cut into the exterior surface of said suture thread; wherein the cut has an angle relative to the longitudinal axis of the suture thread which changes between the tip of each barb and the base of each barb; and wherein the barbed surgical suture is adapted for use in surgical applications to hold closed a surgical or traumatic wound in tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A barbed surgical suture comprising;
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a suture thread having an end, a longitudinal axis and an exterior surface, with a needle attached to the end of the suture thread; a plurality of barbs disposed along the exterior surface of said suture thread; each barb being at least one of, rotationally displaced around the longitudinal axis of the suture thread, and axially displaced along the longitudinal axis of the suture thread, relative to each adjacent barb; each bath having a tip and a base; each bath being defined by a cut surface extending into the suture thread from the exterior surface of said suture thread; wherein the cut surface has an angle relative to the longitudinal axis of the suture thread which changes between the tip of each barb and the base of each barb; and wherein the barbed surgical suture is adapted for use in surgical applications to hold closed a surgical or traumatic wound in tissue. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A. barbed surgical suture comprising:
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a suture thread having an end, a longitudinal axis and an exterior surface, with a needle attached to the end of the suture thread; a plurality of barbs disposed along the exterior surface of said suture thread; each barb being at least one of, rotationally displaced around the longitudinal axis of the suture thread, and axially displaced along the longitudinal axis of the suture thread, relative to each adjacent barb; each barb being defined by an angled cut into the exterior surface of said suture thread; each angled cut characterized by having a first cut portion disposed at a first angle relative to the longitudinal axis of the suture thread and a second cut portion disposed at a second angle relative to the longitudinal of the suture thread; wherein the first angle is different from the second angle; and wherein the barbed surgical suture is adapted for use in surgical applications to hold closed a surgical or traumatic wound in tissue. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification