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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0277112 (1981-06-25) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 1007 인용 특허 : 1 |
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
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.
A method of drawing together and joining in intimate contact discrete portions of living tissue, comprising the steps: (a) providing a surgical staple made of a shape-memory material, said staple being formed into a closed shape at a temperature above the transition temperature of said material, and
A method of drawing together and joining in intimate contact discrete portions of living tissue, comprising the steps: (a) providing a surgical staple made of a shape-memory material, said staple being formed into a closed shape at a temperature above the transition temperature of said material, and subsequently deformed into an open shape at a temperature below said transition temperature; (b) engaging the open staple by a mechanical jaw and positioning the open staple to extend between, and be in contact with each of said portions of living tissue; (c) heating said staple by passing a electric current therethrough from the jaw to elevate the staple to a temperature above the transition temperature to close the staple, drawing together and joining the tissue.
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