IMPLANTABLE VESICAL STIMULATOR
First Claim
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1. A system for stimulating the bladder of a mammal with energy supplied from a source exterior to said mammal including:
- a. means exterior to said mammal for providing radio frequency energy of a predetermined time width and having a predetermined pulse repetition period larger than said time width;
b. means including an antenna tuned to the radio frequency of means (a) and a storage capacitor for storing said energy during said time width, wherein said means (b) is encapsulated in a biologically inert substance for placing within a mammal;
c. means for generating a stimulating pulse from the source of energy supply during the interval that means (a) does not emit radio frequency energy, said means includes a load and a second capacitor connected to said antenna and a first translating device in cascade with a second translating device, said second capacitor adapted to charge, during the time width of said means (a) to thereby bias said first translating device to cut off during said time width, and to discharge between the time widths to thereby allow said first translating device to conduct triggering said second translating device to conduct discharging said storage capacitor through said load across which a stimulating pulse is generated, said means being connected to said antenna and said storage capacitor and encapsulated in a biologically inert substance for placing within the mammal; and
, d. means for conveying said stimulating pulse to said bladder wall including a plurality of electrodes for embedding in the walls of the bladder so that contractiOn of the bladder and voiding of urine from the same occur during the generation of said stimulating pulse.
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Abstract
A device and method for artificially electrically stimulating the body wall of a bladder by an electromagnetic wave which propagates through the bladder wall and is converted by a receiving mechanism into electrical stimulating pulses which are conducted to the bladder wall. But the receiving mechanism receives all its power from the outside source of electromagnetic energy and since it uses no internal power source for generating the electrical pulses to stimulate the bladder wall, a substantially permanent receiving mechanism is achieved which requires no free charging of an internal power supply.
121 Citations
3 Claims
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1. A system for stimulating the bladder of a mammal with energy supplied from a source exterior to said mammal including:
- a. means exterior to said mammal for providing radio frequency energy of a predetermined time width and having a predetermined pulse repetition period larger than said time width;
b. means including an antenna tuned to the radio frequency of means (a) and a storage capacitor for storing said energy during said time width, wherein said means (b) is encapsulated in a biologically inert substance for placing within a mammal;
c. means for generating a stimulating pulse from the source of energy supply during the interval that means (a) does not emit radio frequency energy, said means includes a load and a second capacitor connected to said antenna and a first translating device in cascade with a second translating device, said second capacitor adapted to charge, during the time width of said means (a) to thereby bias said first translating device to cut off during said time width, and to discharge between the time widths to thereby allow said first translating device to conduct triggering said second translating device to conduct discharging said storage capacitor through said load across which a stimulating pulse is generated, said means being connected to said antenna and said storage capacitor and encapsulated in a biologically inert substance for placing within the mammal; and
, d. means for conveying said stimulating pulse to said bladder wall including a plurality of electrodes for embedding in the walls of the bladder so that contractiOn of the bladder and voiding of urine from the same occur during the generation of said stimulating pulse.
- a. means exterior to said mammal for providing radio frequency energy of a predetermined time width and having a predetermined pulse repetition period larger than said time width;
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2. A system for stimulating the bladder of a mammal with energy supplied from a source esterior to said mammal including:
- a. means exterior to said mammal for providing radio frequency energy of a predetermined time width and having a predetermined pulse repetition period larger than said time width;
b. means including an antenna tuned to the radio frequency of means (a) and a storage capacitor for storing said energy during said time width, wherein said means (b) is encapsulated in a biologically inert substance for placing within a mammal;
c. means for generating a stimulating pulse from the source of energy supply during the interval that means (a) does not emit radio frequency energy, said means includes a load and a second capacitor connected to said antenna and a first translating device in cascade with a second translating device, said second capacitor adapted to charge, during the time width of said means (a) to thereby bias said first translating device to cut off during said time width, and to discharge between the time widths to thereby allow said first translating device to conduct triggering said second translating device to conduct discharging said storage capacitor through said load across which a stimulating pulse is generated, said means being connected to said antenna and said storage capacitor and encapsulated in a biologically inert substance for placing within the mammal wherein the electrodes are adapted for embedding in the walls of the bladder in two circles, each electrode equally spaced from the other in its circle, the circles corresponding to the mid portion of the bladder and between the tip of the bladder and the lower circle.
- a. means exterior to said mammal for providing radio frequency energy of a predetermined time width and having a predetermined pulse repetition period larger than said time width;
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3. In a system for stimulating the bladder of a mammal with energy supplied from a transmitter exterior to said mammal, said transmitter generating radio frequency energy of a predetermined time width and pulse repetition period, a stimulator for contracting the bladder, said stimulator including, an antenna tuned to the radio frequency of the transmitter, a storage capacitor for storing said energy during said time width, a load resistor connected to said storage capacitor, a second capacitor connected to said antenna and a first translating device which is in cascade with a second translating device, said second translating device connected in series with said load resistor and said storage capacitor, said second capacitor, adapted to charge during the time width of said transmitter to bias said first translating device to cut off during said time width, and to discharge between time widths to thereby allow said first translating device to conduct, and trigger said second translating device to conduct discharging said storage capacitor through said load resistor across which a stimulating pulse is formed, and conductors connected across said load resistor including electrodes adapted to be embedded in the bladder wall, for conveying said stimulating pulse to the walls of the bladder so that contraction of the bladder and voiding of urine from the same occur during said stimulating pulses.
Specification