Method of forming barbs on a suture and apparatus for performing same
First Claim
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1. A method of cutting barbs on a suture having a longitudinal axis, said method comprising the steps of:
- providing a suture;
providing a cutting blade;
creating a barb on said suture by the motion of the blade which takes into account a cutting action by the blade on the suture in three dimensions along x-y-z axes of the suture caused by blade geometry in conjunction with blade motion; and
providing a means for moving the blade to cause said cutting action to create the barb.
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Abstract
A method of making a barbed suture by varying the blade geometry and/or the movement of the blade when cutting a suture is disclosed. The method can also be accomplished with a cutting device to create a plurality of barbs on the exterior of surgical suture. The barbs produced using the method with the cutting device can be the same or random configurations.
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Citations
37 Claims
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1. A method of cutting barbs on a suture having a longitudinal axis, said method comprising the steps of:
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providing a suture; providing a cutting blade; creating a barb on said suture by the motion of the blade which takes into account a cutting action by the blade on the suture in three dimensions along x-y-z axes of the suture caused by blade geometry in conjunction with blade motion; and providing a means for moving the blade to cause said cutting action to create the barb. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An apparatus for cutting barbs on a suture having a longitudinal axis, said apparatus comprising:
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a cutting bed on which the suture is maintained in place during cutting; at least one blade; means for moving said at least one blade in a predetermined manner across the suture with the movement or geometry of said at least one blade producing at least one barb on said suture. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method of cutting a barb on a suture, said method comprising the steps of:
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providing a suture having a longitudinal axis; twisting said suture along its longitudinal axis; and cutting a barb on said suture when in its twisted state. - View Dependent Claims (36, 37)
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Specification