System for variable-angle cutting of a suture to create tissue retainers of a desired shape and size
First Claim
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1. An apparatus for creating barbs on a suture having a longitudinal axis, the apparatus comprising:
- a cutting bed configured to support a suture thread at a cutting position;
a cutting device including an articulated joint having an axis, the cutting device having a selected path along which the cutting device moves, the selected path selected such that the cutting device passes through a suture thread supported by the cutting bed at the cutting position to create a barb having a desired configuration; and
means for rotating the suture thread between operations of the cutting device whereby the apparatus is adapted to create a plurality of barbs at a plurality of angularly displaced positions on the suture thread.
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Abstract
A system for manufacturing a self-retaining suture is disclosed. The system includes a cutting bed which supports the suture during cutting. A cutting device makes cuts in the suture thread having a preselected geometry. A cutting arm is articulated to allow change of the angle of the cutting device during cutting. The change in the angle of the cutting device is used to control the depth of cut and/or elevate a tissue-retainer away from the suture to better engage tissue.
686 Citations
20 Claims
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1. An apparatus for creating barbs on a suture having a longitudinal axis, the apparatus comprising:
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a cutting bed configured to support a suture thread at a cutting position; a cutting device including an articulated joint having an axis, the cutting device having a selected path along which the cutting device moves, the selected path selected such that the cutting device passes through a suture thread supported by the cutting bed at the cutting position to create a barb having a desired configuration; and means for rotating the suture thread between operations of the cutting device whereby the apparatus is adapted to create a plurality of barbs at a plurality of angularly displaced positions on the suture thread. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for creating tissue-grasping elements on a suture comprising:
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a cutting bed adapted and configured to support the suture; a cutting device adapted to move along a selected path such that the cutting device cuts into the suture to create a tissue-grasping element having a desired configuration; the cutting device having a joint which allows change of an angle of the cutting device relative to the suture; and a support adapted to support the suture, which support can be rotated in order to rotate the suture around the longitudinal axis whereby a plurality of tissue-grasping elements having the desired configuration can be created by the cutting device at a plurality of positions on the suture. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An apparatus for cutting a suture having a longitudinal axis and a surface, the apparatus comprising:
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a cutting bed adapted and configured to support the suture; a cutting device having a joint which allows a change of an angle of the cutting device relative to the suture during cutting; the cutting device being adapted to make a cut having a preselected configuration in the surface of the suture; the preselected configuration of the cut including an aspect affected by the change of the angle of the cutting device relative to the suture during cutting; and a holder adapted to secure the suture, which holder can be rotated in order to rotate the suture around the longitudinal axis whereby a plurality of cuts having a desired configuration can be created by the cutting device at a plurality of positions in the surface of the suture. - View Dependent Claims (18, 19, 20)
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Specification