US3693625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart stimulator and heart-powered energy supply therefor
Assignee: US Philips Corp
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Filing: 1970-05-01
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Granted: 1972-09-26
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Expires: 1990-05-01
Abstract
Abstract A device for supplying electrical energy to a heart stimulator which is formed as an air-tight casing arranged to be placed within the human body in close proximity to the heart muscle. The casing has housed therein an annularly arranged magnetic circuit with a rotor arranged in a gap of the circuit. A rotary piston is accommodated within a piston chamber having four compartments divided in pairs. One of the pair is connected via a flexible tube to a first flexible bag arranged at the tip of the heart and the other pair communicates via another flexible hose to a second flexible elastic bag. The elastic bags contain fluid which communicate alternately between the pairs of compartments within the chamber so that upon the pumping action of the heart the piston is caused to oscillate in a rotary motion and mechanical coupling means are connected between the piston and a driving member mounted coaxially with the rotor so as to drive the rotor thereby producing electrical signals in response to the movement of the heart.
Inventors
- 👤 Michel Joseph Auphan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:57
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/372; A61N1/378; A61N1/3785
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
192 words
A device for supplying energy for an intracorporal heart stimulator, comprising an airtight casing to be placed within the human body, an annularly arranged magnetic circuit housed within said casing, a winding coupled to said magnetic circuit to produce electrical energy said circuit having a gap therein, a rotor arranged in said gap for oscillatory movement, a multicompartment piston chamber arranged within said magnetic circuit, a piston mounted for rotatable movement within said chamber about an axis of rotation parallel and eccentric to the axis of rotation of said rotor, hydraulic means connected with said chamber for transmitting pulses thereto in response to movements of the heart so as to cause rotational displacement of said piston in accordance therewith, , a driving member rotatably mounted coaxially with said rotor and having means contacting said rotor for driving same, and mechanical coupling means for causing movement of said driving member in response to rotational movement of said piston so that when said piston is rotatably driven as a result of heart movement said driving member will be caused to rotate and cause oscillatory movement of said rotor so as to produce electrical energy.
Claim 2
Independent Claim
192 words
A device for supplying energy for an intracorporal heart stimulator, comprising an airtight casing to be placed within the human body, an annularly arranged magnetic circuit housed within said casing, a winding coupled to said magnetic circuit to produce electrical energy said circuit having a gap therein, a rotor arranged in said gap for oscillatory movement, a multicompartment piston chamber arranged within said magnetic circuit, a piston mounted for rotatable movement within said chamber about an axis of rotation parallel and eccentric to the axis of rotation of said rotor, hydraulic means connected with said chamber for transmitting pulses thereto in response to movements of the heart so as to cause rotational displacement of said piston in accordance therewith, , a driving member rotatably mounted coaxially with said rotor and having means contacting said rotor for driving same, and mechanical coupling means for causing movement of said driving member in response to rotational movement of said piston so that when said piston is rotatably driven as a result of heart movement said driving member will be caused to rotate and cause oscillatory movement of said rotor so as to produce electrical energy.
Claim 3
Dependent Claim
113 words
The device according to claim 1 wherein said piston chamber comprises first, second, third and fourth compartments, the volume of said first and third compartments being variable and equal to each other, the volume of said second and fourth compartments being variable and equal to each other and wherein said hydraulic means comprises a first flexible bag arranged on the tip of the heart, a first flexible liquid circulation tube connected to said first flexible bag and communicating with said first and third compartments, a second elastic bag of expansion and a second flexible liquid circulation tube connected to said second elastic bag of expansion and communicating with said second and fourth compartments.
Claim 4
Dependent Claim
25 words
The device according to claim 1 further comprising at least one magnet disposed near said rotor for producing a magnetic field perpendicular to said rotor.
Claim 5
Dependent Claim
61 words
The device according to claim 1 wherein said piston is mounted for rotation about an axis of the casing which is filled with air, and wherein said piston is made of magnetic material and further comprising a pair of magnets arranged symmetrically outside of said piston chamber so as to form a magnetic coupling thereby producing a drive for the piston.
Claim 6
Dependent Claim
29 words
The device according to claim 1 further comprising a capacitor connected to said winding and forming an oscillatory circuit for the transmission of the mechanical energy of the rotor.
Claim 7
Dependent Claim
54 words
The device according to claim 1 wherein said mechanical coupling means for causing movement of said driving member in response to rotational movement of said piston comprises a first gear wheel arranged on said driving member and a second gear wheel associated with said piston and arranged in mesh with said first gear wheel.
Claim 8
Dependent Claim
62 words
The device according to claim 1 further comprising a heart stimulator carried within said casing, an energy accumulator connected to said stimulator and a switch for connecting said oscillatory circuit to said energy accumulator, one of the electrodes of said stimulator being formed by said casing and the other electrode being fixed to said flexible bag at the tip of the heart.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |