Anastomosis device and method
First Claim
1. An anastomosis device comprising:
- (a) an essentially cylindrical, radially resilient spring, the exposed surfaces of said spring comprising material that is compatible for implantation into the human body and said spring having a cylindrical diameter of not more than 1 cm. and(b) a plurality of barbs joined to and extending outwardly from said spring.
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Accused Products
Abstract
A preferred embodiment of the anastomosis device comprises a cylindrical, radially resilient spring upon which is attached a number of outwardly extending barbs. The radial spring action significantly simplifies the anastomosis procedure and in addition allows the mended portion of the blood vessel to pulsate in a fashion similar to that of the pulsatile action of an unmended vessel. The barbs attach the device to the blood vessel thus maintaining its position securely. The disclosed anastomosis device is recommended for rejoining small blood vessels where a simple, reliable alternative to micro-suturing techniques is desirable. In the anastomosis method of the present invention a cylindrical, radially resilient spring is compressed and placed about one end of a vessel. The second end of the vessel is then placed about the spring and the compression is released.
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Citations
29 Claims
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1. An anastomosis device comprising:
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(a) an essentially cylindrical, radially resilient spring, the exposed surfaces of said spring comprising material that is compatible for implantation into the human body and said spring having a cylindrical diameter of not more than 1 cm. and (b) a plurality of barbs joined to and extending outwardly from said spring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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- 19. An anastomosis device comprising an essentially cylindrical, loop-free, radially resilient spring made of a resilient filament having at least 6 but not more than 32 portions that each runs generally in a longitudinal direction, the exposed surfaces of said spring comprising material that is compatible for implantation beneath the skin of the human body and said spring having an uncompressed cylindrical diameter of not more than 1 cm. and having a diameter to height ratio of not more than approximately 3 in the uncompressed state.
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24. A process of anastomosis comprising of the steps of:
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(a) radially compressing a radially resilient, essentially cylindrical spring; (b) while maintaining said spring in a radially compressed state; (1) placing the end of a first vessel over said radially compressed spring and (2) placing the end of a second vessel over said radially compressed spring; and (c) after said placing of said second vessel, releasing the radial compression on said spring. - View Dependent Claims (25, 26)
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27. A process of anastomosis comprising of the steps of:
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(a) placing a radially resilient essentially cylindrical spring around the end of a first vessel; (b) radially compressing the spring while around the first vessel; (c) while maintaining the spring in a radially compressed state; (1) everting the end of the first vessel over the radially compressed spring and (2) after said everting, placing the end of a second vessel over the combination of the spring and everted first vessel; and (d) after said placing of said second vessel, releasing the radial compression on the spring. - View Dependent Claims (28, 29)
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Specification