Interventional procedure drive and control system
First Claim
1. A pumping system for use in medical applications where liquids are infused into and aspirated from a living being, said system comprising:
- (a) a means for infusing a liquid into said patient;
(b) a means for aspirating a liquid from said patient, each of said means comprising a positive displacement pump other than a peristaltic type pump, said positive displacement pump having an inlet and an outlet side, wherein at least said aspirating means comprises a shut-off valve located on the inlet side of said pump;
(c) a damper apparatus for damping the pressure variations in the pumped liquid;
(d) means for controlling said pumps; and
(e) a user interface for inputting commands to said controlling means.
1 Assignment
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Accused Products
Abstract
A pumping system for use in medical applications where liquids must be infused and aspirated from a mammalian patient, and whose economics are such that it is cost effective to simply dispose of it after a single use. The system features positive displacement pump(s) such as reciprocating pump(s) containing a damping mechanism to dampen out the peaks and valleys in the fluid pressure that is pumped, which is important for preventing cavitation. The system furthermore features a shut-off valve on the extraction side so that certain injected fluids such as contrast medium, are not immediately pumped out of the patient. In a preferred embodiment, the system also features means for independently controlling the fluid pressure/volume on the infusion and extraction sides, self-priming capability, a continuous fluid path, and visual air bubble detection, with viewports located at important points in the fluid path, such as at pumps and valves.
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Citations
19 Claims
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1. A pumping system for use in medical applications where liquids are infused into and aspirated from a living being, said system comprising:
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(a) a means for infusing a liquid into said patient;
(b) a means for aspirating a liquid from said patient, each of said means comprising a positive displacement pump other than a peristaltic type pump, said positive displacement pump having an inlet and an outlet side, wherein at least said aspirating means comprises a shut-off valve located on the inlet side of said pump;
(c) a damper apparatus for damping the pressure variations in the pumped liquid;
(d) means for controlling said pumps; and
(e) a user interface for inputting commands to said controlling means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A pumping system for use in medical applications where liquids are infused into and aspirated from a living being, said system comprising:
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(a) a means for infusing a liquid into said patient;
(b) a means for aspirating a liquid from said patient, each of said means comprising a positive displacement pump other than a peristaltic type pump, said positive displacement pump having an inlet and an outlet side, wherein at least said aspirating means comprises a shut-off valve located on the inlet side of said pump; and
(c) means for controlling said pumps.
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19. A pumping system for use in medical applications where liquids are infused into and aspirated from a living being, said system comprising:
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(a) a means for infusing a liquid into said patient;
(b) a means for aspirating a liquid from said patient, each of said means comprising a positive displacement pump other than a peristaltic type pump;
(c) a damper apparatus for damping the pressure variations in the pumped liquid; and
(d) means for controlling said pumps.
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Specification