Method for cutting a suture to create tissue retainers of a desired shape and size
First Claim
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1. A method for cutting barbs on a suture thread having a longitudinal axis, the method comprising:
- (a) setting the suture thread on a support;
(b) moving a cutting device along a fixed path relative to the support whereby the cutting device passes through the suture thread to create at least a first barb at a first location on the suture thread;
(c) moving the suture thread relative to the support; and
(d) moving the cutting device along said fixed path relative to the support whereby the cutting device passes through the suture thread to create at least a second barb at a second location on the suture thread.
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Abstract
A method for manufacturing self-retaining suture is disclosed. The method provides for creating and supporting a suture during cutting of tissue-grasping elements at different angular positions. A cutting device is moved through the suture thread along a path which can include longitudinal, transverse, oscillating and depth components to create a desired tissue-grasping element on the surface of the suture. The path of the cutting device and the rotation of the suture relative to the cutting device are controlled so that a plurality of angularly-displaced tissue-grasping elements can be created on the suture.
683 Citations
20 Claims
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1. A method for cutting barbs on a suture thread having a longitudinal axis, the method comprising:
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(a) setting the suture thread on a support; (b) moving a cutting device along a fixed path relative to the support whereby the cutting device passes through the suture thread to create at least a first barb at a first location on the suture thread; (c) moving the suture thread relative to the support; and (d) moving the cutting device along said fixed path relative to the support whereby the cutting device passes through the suture thread to create at least a second barb at a second location on the suture thread. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for creating features on a suture thread having a longitudinal axis, the method comprising:
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(a) setting the suture thread on a support; (b) contacting the suture thread with a cutting device; (c) moving the cutting device along a predetermined path to cut the suture thread and create a feature, where the predetermined path includes at least one of, a transverse x-axis component perpendicular to the longitudinal axis of the suture thread, a longitudinal y-axis component parallel to the longitudinal axis of the suture thread, and a depth z-axis component perpendicular to the longitudinal axis of the suture thread and the transverse x-axis; (d) rotating the suture thread about the longitudinal axis; and (e) moving the cutting device along said predetermined path to cut the suture thread and create another feature. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for cutting a suture thread having a surface and a longitudinal axis, the method comprising:
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(a) setting the suture thread on a support; (b) contacting the suture thread with a cutting device; (c) moving the cutting device along a predetermined path to make a first angled cut in the surface of the suture thread without cutting entirely through the suture thread, where the predetermined path includes at least one of, a transverse x-axis component perpendicular to the longitudinal axis of the suture thread, a longitudinal y-axis component parallel to the longitudinal axis of the suture thread, and a depth z-axis component perpendicular to the longitudinal axis of the suture thread and the transverse x-axis; (d) rotating the suture thread about the longitudinal axis; and (e) moving the cutting device along said predetermined path to make a second angled cut in the surface of the suture thread without cutting entirely through the suture thread. - View Dependent Claims (19, 20)
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Specification