Surgery – Instruments – Internal pressure applicator
Patent
1995-11-20
1997-09-23
Buiz, Michael
Surgery
Instruments
Internal pressure applicator
606198, A61M 2900
Patent
active
056699301
ABSTRACT:
A stent for intracorporeal retention is inserted in a human body, for instance, inside an airway, esophagus, or bile duct, and used for preventing a bore of the internal organs described above from being occluded. With this stent, discharge from the airway does not easily adhere to, nor deposit on, the internal surface of the cylindrical body, so that the occlusion thereof can effectively be prevented and, at the same time, granulation does not easily occur and, for this reason, occlusion of the airway can be prevented, which insures a high degree of safety for a human body. This stent has a hollow cylindrical body 2 made from silicone rubber with both edges opened and the internal surface of this cylindrical body is processed in any of the following ways: (a) coating with a silicone resin, (b) adhesion of a fluorine-based resin tube, or (c) chemical deposition of polyparaxylylene or a derivative thereof and, at the same time, an external surface thereof is processed by (d) chemical deposition of polyparaxylylene or a derivative thereof or (e) by gradually rounding and tapering toward both edges with the tapered sections softer than other portions thereof.
REFERENCES:
patent: 5108416 (1992-04-01), Ryan et al.
patent: 5156620 (1992-10-01), Pigott
patent: 5158548 (1992-10-01), Lau et al.
Buiz Michael
Fuji Systems Corporation
Truong Kevin
LandOfFree
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