Device for the injection of fluid, suitable for implantation
First Claim
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1. A fluid injection device comprising:
- an implantable fluid reservoir;
an implantable catheter for injecting fluid contained in said reservoir into a patient, said catheter being connected to said reservoir;
an implantable pumping means for pumping fluid from said reservoir to said implantable catheter;
an implantable elastic means for actuating said pumping means;
an implantable mechanical flow regulating means for regulating said elastic means to cause said pumping means to deliver a continuous dose of fluid to said catheter;
a magnetic drive means for selectively tensioning said elastic means and for selectively driving said pumping means to deliver an instantaneous dose of fluid to said catheter, said magnetic drive means including a first implantable part and a second non-implantable part cooperating with each other through the skin of the patient via a magnetic field;
an implantable gear transmission means for transmitting the motion of said first implantable part of said drive means selectively to said pumping means and selectively to said elastic means, said transmission means being capable of tensioning said elastic means thereby rendering said elastic means active, said transmission means being further capable of cooperating with said pumping means to fill said pumping means with fluid from said reservoir and to selectively manually deliver an instantaneous dose of fluid to said catheter independently of said elastic means; and
an implantable flow-adjustment means for continuous adjustment of the rate of fluid flow to said catheter from said pumping means, said first implantable part of said drive means cooperating with said flow adjustment means when said pumping means is activated by said elastic means and when said first implantable part does not cooperate with said elastic means or said pumping means.
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Abstract
Disclosed is an implantable device for the injection of fluid into a patient'"'"'s body. The device includes a non-invasive external part which magnetically cooperates with the implanted portion through a magnetic field. The device is entirely mechanical and is capable of delivering both a continuous dose of fluid as well as instantaneous dose of fluid. The mechanism comprises a fluid reservoir, a catheter, an elastic means, a regulating means, a magnetic drive means, a gear transmission means and a flow adjustment means.
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Citations
15 Claims
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1. A fluid injection device comprising:
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an implantable fluid reservoir; an implantable catheter for injecting fluid contained in said reservoir into a patient, said catheter being connected to said reservoir; an implantable pumping means for pumping fluid from said reservoir to said implantable catheter; an implantable elastic means for actuating said pumping means; an implantable mechanical flow regulating means for regulating said elastic means to cause said pumping means to deliver a continuous dose of fluid to said catheter; a magnetic drive means for selectively tensioning said elastic means and for selectively driving said pumping means to deliver an instantaneous dose of fluid to said catheter, said magnetic drive means including a first implantable part and a second non-implantable part cooperating with each other through the skin of the patient via a magnetic field; an implantable gear transmission means for transmitting the motion of said first implantable part of said drive means selectively to said pumping means and selectively to said elastic means, said transmission means being capable of tensioning said elastic means thereby rendering said elastic means active, said transmission means being further capable of cooperating with said pumping means to fill said pumping means with fluid from said reservoir and to selectively manually deliver an instantaneous dose of fluid to said catheter independently of said elastic means; and an implantable flow-adjustment means for continuous adjustment of the rate of fluid flow to said catheter from said pumping means, said first implantable part of said drive means cooperating with said flow adjustment means when said pumping means is activated by said elastic means and when said first implantable part does not cooperate with said elastic means or said pumping means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification