Occlusion of body channels
First Claim
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1. A method of occluding a body reproduction duct of an animal comprising the steps of(1) inserting a water-swellable contraceptive hydrogel article into said body reproduction duct;
- (2) bringing said hydrogel into contact with animal tissue fluid;
(3) allowing said hydrogel to swell to an extent of at least 40% up to 300% of its original size and thereby(4) contacting and impinging upon the body duct in which said device is inserted,said device being substantially completely inert to said body fluid and the body tissue with which it is in contact, having a cross-sectional configuration corresponding to that of said reproduction duct and an indicator removal thread secured thereto.
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Abstract
A method for obstructing channels, ducts and other hollow spaces in human and animal bodies is disclosed comprising inserting a device having a portion thereof adapted to swell at least 20% in size when in contact with the fluid of the human or animal body, the device being in a shape matching and cooperating with the channel to be obstructed.
220 Citations
12 Claims
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1. A method of occluding a body reproduction duct of an animal comprising the steps of
(1) inserting a water-swellable contraceptive hydrogel article into said body reproduction duct; -
(2) bringing said hydrogel into contact with animal tissue fluid; (3) allowing said hydrogel to swell to an extent of at least 40% up to 300% of its original size and thereby (4) contacting and impinging upon the body duct in which said device is inserted, said device being substantially completely inert to said body fluid and the body tissue with which it is in contact, having a cross-sectional configuration corresponding to that of said reproduction duct and an indicator removal thread secured thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for at least temporarily occluding a reproductive oviduct or spermatic duct of an animal for contraceptive purposes, said method comprising the steps of:
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(a) forming a body of water-swellable polymeric hydrogel to the extent of at least 20% in volume by absorbing water, said hydrogel being substantially inert to body fluid and the tissue of said reproductive duct; (b) shaping said hydrogel body into a cross-section which in the dry state is no larger than about the size of the cross-section of the reproductive duct; (c) inserting the shaped hydrogel body in the dry state into the reproductive duct at a predetermined distance from the opening of the duct; and (d) allowing the thus inserted shaped hydrogel body to remain in position, absorb water from the body fluid thereabout and anchoring itself by pressure against the surrounding walls of the duct. - View Dependent Claims (12)
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Specification