Adjustable valve having a radially compressible sealing body

Details Adjustable valve having a radially compressible sealing body Adjustable valve having a radially compressible sealing body

1994-08-15

1996-05-07

McDermott, Corrine

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604256, 604283, 251 4, A61M 500

Patent

active

055141099

ABSTRACT:
An adjustable surgical valve has a sealing body with an axial passage extending through it, a toroidal body axially aligned with the sealing body, and a device that selectively changes the relative axial positions of the sealing body and the toroidal body. The sealing body and the toroidal body have mating surfaces which radially compresses the axial passage of the sealing body when the relative axial positions of the sealing body and the toroidal body are changed. This causes the axial passage to seal with an instrument inserted into it, or the seal with itself if no instrument is inserted. Alternatively, or additionally, the sealing body may include a braided sleeve coaxial with the axial passage and extending from the sealing body, and a device that selectively changes the relative axial positions of the sealing body and the extended part of the braided sleeve to elongate the braided sleeve. This causes the braided sleeve to contract radially, which compresses the axial passage of the sealing body radially. The sealing body is made of an elastomeric foam or an encapsulated gel.

REFERENCES:
patent: 3685786 (1972-08-01), Woodson
patent: 3977400 (1976-08-01), Moorehead
patent: 4723550 (1988-02-01), Bales et al.
patent: 5098396 (1992-03-01), Taylor et al.
patent: 5279597 (1994-01-01), Dassa et al.

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