Control device for medical and surgical uses
First Claim
1. An externally actuated control device for operating a means for controlling a body duct or cavity in medical and surgical uses, implantable in sub-cutaneous position and actuatable by pressing on a sub-cutaneous membrane, said device comprising, in a casing, a first chamber, closed by said membrane which is positioned on one face of the casing and containing an incompressible fluid, and a second chamber, containing a gas and housing two coaxial bellows joined together at their free ends, one of the two bellows being an actuating bellows and communicating with said first chamber containing said incompressable fluid, and the second bellows with a flexible control duct going to said body duct or cavity to be controlled.
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Abstract
A control device in implantable sub-cutaneously for use in medicine and surgery. It is actuable by pressing on a sub-cutaneous membrane. It comprises a first chamber closed by the membrane which is placed on one surface of its casing and contains an incompressible fluid, and a second chamber, containing a gas and housing two coaxial bellows connected at their free ends. One of the bellows communicates with the first chamber and the second bellows communicates with a flexible duct going to the duct or cavity to be controlled.
35 Citations
22 Claims
- 1. An externally actuated control device for operating a means for controlling a body duct or cavity in medical and surgical uses, implantable in sub-cutaneous position and actuatable by pressing on a sub-cutaneous membrane, said device comprising, in a casing, a first chamber, closed by said membrane which is positioned on one face of the casing and containing an incompressible fluid, and a second chamber, containing a gas and housing two coaxial bellows joined together at their free ends, one of the two bellows being an actuating bellows and communicating with said first chamber containing said incompressable fluid, and the second bellows with a flexible control duct going to said body duct or cavity to be controlled.
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3. An externally actuated control device for medical and surgical uses, implantable in sub-cutaneous position and actuatable by pressing on a sub-cutaneous membrane, said device comprising, in a casing, a first chamber, closed by said membrane which is positioned on one face of the casing and containing an incompressible fluid, and a second chamber, containing a gas and housing two coaxial bellows joined together at their free ends, one of the two bellows being an actuating bellows and communicating with said first chamber containing said incompressable fluid, and the second bellows being an actuated bellows having a second fluid in communication with a flexible control duct going to said duct or cavity to be controlled,
wherein the two bellows are fixed by one end to a wall of the second chamber and are joined together at their free ends by a free plate, the first bellows being the inner bellows and the second bellows being the outer bellows, and wherein the second chamber houses a return spring bearing against said free plate.
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8. A control device for controlling implanted medical and surgical apparatus, said control device comprising
a housing defining first and second chambers, said first chamber containing an incompressible fluid, and said second chamber containing a gas, first and second coaxial bellows arranged within said second chamber containing said incompressable fluid, said first and second bellows being operatively connected to axially move together, passage means in said housing for communicating said first chamber with the interior of said first bellows, actuating means for reversibly flowing said incompressible fluid between said first chamber and the interior of said first bellows through said passage means, and means communicating the interior of said second bellows with the medical and surgical apparatus to be controlled, wherein said control device is implanted in a subcutaneous position, and wherein said control device is actuated by manually pressing on the sub-cutaneously disposed actuating means.
Specification