Shape-memory surgical staple apparatus and method for use in sur

Details Shape-memory surgical staple apparatus and method for use in sur Shape-memory surgical staple apparatus and method for use in sur

1981-06-25

1984-12-04

Howell, Kyle L.

Surgery

Truss

Pad

128335, 128325, 411909, 227DIG1, A61B 1704, A61B 1708, A61B 1712

Patent

active

044858167

ABSTRACT:
The staples are made of a material having the intrinsic property of shape memory, such that heating the material above a certain temperature known as the transition temperature causes any deformation introduced at temperatures below the transition temperature to be reversed, and the staple recovers fully to its shape prior to the deformation. By forming the staple into any desired closed position at a temperature above the transition temperature and then cooling the staple below the transition temperature before deforming it into an open position, the resulting staple will revert to its closed position when it is subsequently reheated above the transition temperature. Consequently, the staple can be used for surgical suturing by merely positioning it in contact with the tissues to be sutured and heating it sufficiently to cause it to penetrate and clinch the tissues together. A low-cost, lightweight surgical staple applicator utilizes a battery for heating the staples to produce closure, and is sterilizable by gamma radiation.

REFERENCES:
patent: 3606592 (1971-09-01), Madurski et al.
patent: 3620212 (1971-11-01), Fannon, Jr. et al.
patent: 3786806 (1974-01-01), Johnson et al.
patent: 3890977 (1975-06-01), Wilson
patent: 3913444 (1975-10-01), Otte
patent: 4170990 (1979-10-01), Baumgart et al.

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