TISSUE HOLDING DEVICES AND METHODS FOR MAKING THE SAME
First Claim
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1. A method for forming a tissue holding device having a predetermined shape suitable for use in surgical applications, comprising:
- providing a polymeric feedstock material;
using a first set of dies, press forming the polymeric feedstock material into a pre-form;
providing a receiver plate and a stripper plate each having a top surface with a recess formed therein having a three-dimensional shaped such that, when the recesses are aligned and facing one another, a cavity is formed therebetween capable of receiving therein the pre-form and having a substantially complementary shape as that of the pre-form, the stripper plate further having a opening therethrough for receiving a punch;
aligning the receiver and stripper plates and placing the pre-form in the cavity formed therebetween;
providing a punch having a punch element having an outer periphery substantially identical to an outer periphery of the predetermined shape of the tissue holding device, and having a three dimensional surface contour substantially complementary to a top surface of a portion of the pre-form to be punched;
pressing the punch element through the stripper plate and into the pre-form to thereby create the tissue holding device of the predetermined shape;
wherein the predetermined shape of the tissue holding device includes a core extending along a length thereof, and a plurality of tissue holding elements extending outwardly therefrom along at least a portion of the length.
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Abstract
Various methods are provided for forming tissue holding devices having predetermined shapes suitable for use in surgical applications, and devices formed in accordance with such methods are also provided. These methods include press forming methods, and press forming methods in combination with profile punching. Tissue holding devices formed in accordance with such methods include various configurations for a core and a plurality of tissue holding elements extending outwardly from the core.
71 Citations
15 Claims
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1. A method for forming a tissue holding device having a predetermined shape suitable for use in surgical applications, comprising:
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providing a polymeric feedstock material; using a first set of dies, press forming the polymeric feedstock material into a pre-form; providing a receiver plate and a stripper plate each having a top surface with a recess formed therein having a three-dimensional shaped such that, when the recesses are aligned and facing one another, a cavity is formed therebetween capable of receiving therein the pre-form and having a substantially complementary shape as that of the pre-form, the stripper plate further having a opening therethrough for receiving a punch; aligning the receiver and stripper plates and placing the pre-form in the cavity formed therebetween; providing a punch having a punch element having an outer periphery substantially identical to an outer periphery of the predetermined shape of the tissue holding device, and having a three dimensional surface contour substantially complementary to a top surface of a portion of the pre-form to be punched; pressing the punch element through the stripper plate and into the pre-form to thereby create the tissue holding device of the predetermined shape; wherein the predetermined shape of the tissue holding device includes a core extending along a length thereof, and a plurality of tissue holding elements extending outwardly therefrom along at least a portion of the length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification