Injecting apparatus for medical liquid
First Claim
1. In an apparatus for injecting liquid into the body including means supporting the apparatus on the torso, a pump, a liquid reservoir connected to the pump, and a conduit connected to the pump and entering into the body for conveying the liquid into the body, the improvement in actuating means for said pump comprising a pump operating member, and drive means connected to said operating member for driving said operating member, said drive means including means movable in response to breathing movement, and said drive means further including indexing means moving the drive means an increment in response to each breathing movement, a plurality of increments of movement resulting in a single pumping operation whereby liquid injection occurs at a frequency less than the breathing frequency.
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Accused Products
Abstract
Injecting apparatus comprises means to hold the apparatus against a living body, and a medical liquid in a reservoir of the apparatus is pumped by a pump means which is driven by movement of some portion of the living body, so as to be injected into the living body. The medical liquid may be injected little by little, in which case each cycle of the pump means is effected by a plurality of movements of the living body. The reservoir is made of resilient material, for example, silicone rubber. A modified reservoir comprises an inner bag and an outer bag, with an intermediate space therebetween, which may be filled with a physiological solution of sodium chloride.
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Citations
11 Claims
- 1. In an apparatus for injecting liquid into the body including means supporting the apparatus on the torso, a pump, a liquid reservoir connected to the pump, and a conduit connected to the pump and entering into the body for conveying the liquid into the body, the improvement in actuating means for said pump comprising a pump operating member, and drive means connected to said operating member for driving said operating member, said drive means including means movable in response to breathing movement, and said drive means further including indexing means moving the drive means an increment in response to each breathing movement, a plurality of increments of movement resulting in a single pumping operation whereby liquid injection occurs at a frequency less than the breathing frequency.
Specification