Adjustable valve having a radially compressible sealing body
US5338313A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1992 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Dec 17, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/0673
- WIPO fieldMedical technology
- WIPO sectorInstruments
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 compress 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 to 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.