US3820534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for promoting the formation of bone substance
Assignee: Individual
•
Filing: 1972-04-06
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Granted: 1974-06-28
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Expires: 1992-04-06
Abstract
Abstract A splint for fixing a bone structure in position is in the form of a marrow nail, of which at least a part is constructed to serve as an electrode. The electrode is connected to a first terminal end of a pick-up coil. The second terminal end of the coil is connected to a second electrode which may be also attached to the marrow nail or is fixed to a belt-like carrier adapted to be tightened around the bone structure.
Inventors
- 👤 W Kraus
- 👤 F Lechner
- 👤 H Viehbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:20
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61F; A61F2/00; A61F2/02; A61F2/30; A61N; A61N1/00; A61N1/40; A61N2/00; A61N2/02; A61F2/28; A61F2002/2821
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
124 words
A device for assisting in formation of bone substance adjacent to the bone of a living organism, comprising: a splint for fixing the bone in position and including a marrow nail; at least one pick-up coil associated with the splint and having two terminals and said coil being adapted to be coupled to a signal generating means for establishing within said coil an a.c. current; an electrode assembly connected to said terminals and adapted to be connected to the bone; and, the marrow nail having an elongated main part on which there is embedded along one surface thereof at least a portion of the electrode assembly which is insulated at least with respect to the main part and has an exposed electrically conducting surface.
Claim 2
Independent Claim
124 words
A device for assisting in formation of bone substance adjacent to the bone of a living organism, comprising: a splint for fixing the bone in position and including a marrow nail; at least one pick-up coil associated with the splint and having two terminals and said coil being adapted to be coupled to a signal generating means for establishing within said coil an a.c. current; an electrode assembly connected to said terminals and adapted to be connected to the bone; and, the marrow nail having an elongated main part on which there is embedded along one surface thereof at least a portion of the electrode assembly which is insulated at least with respect to the main part and has an exposed electrically conducting surface.
Claim 3
Dependent Claim
27 words
A device in accordance with claim 1, wherein the electrode assembly includes two electrodes, insulated from each other, and embedded in opposite sideS of the main part.
Claim 4
Dependent Claim
28 words
A device in accordance with claim 2, in which the electrodes have elongated surfaces, which run along the longitudinal axis of the main part of the marrow nail.
Claim 5
Dependent Claim
27 words
A device in accordance with claim 1, wherein the pick-up coil is arranged in the main part of the marrow nail, which is made of non-magnetic material.
Claim 6
Dependent Claim
32 words
A device in accordance with claim 1, wherein the marrow nail forms a part of a femur prosthesis and at the end has a hip-joint femur head, or a femur neck prosthesis.
Claim 7
Dependent Claim
21 words
A device in accordance with claim 5, wherein the marrow nail has alternating expanded and drawn-in portions along its longitudinal axis.
Claim 8
Independent Claim
151 words
A device for assisting in formation of bone substance adjacent to the bone of a living organism, comprising: a splint for fixing the bone in position and including a marrow nail; at least one pick-up coil associated with the splint and having two terminals and said coil being adapted to be coupled to a signal generating means for establishing within said coil an a.c. current; an electrode assembly connected to said terminals and adapted to be connected to the bone; and, at least a portion of the marrow nail forming at least a portion of the electrode assembly; wherein the electrode assembly includes at least one counter-electrode which is mounted on a belt-like carrier, the part of the marrow nail forming a portion of the electrode assembly is adapted to cooperate with said counter-electrode, and the carrier includes a fastener for tightening it around the fractured bone encompassing the marrow nail.
Claim 9
Independent Claim
151 words
A device for assisting in formation of bone substance adjacent to the bone of a living organism, comprising: a splint for fixing the bone in position and including a marrow nail; at least one pick-up coil associated with the splint and having two terminals and said coil being adapted to be coupled to a signal generating means for establishing within said coil an a.c. current; an electrode assembly connected to said terminals and adapted to be connected to the bone; and, at least a portion of the marrow nail forming at least a portion of the electrode assembly; wherein the electrode assembly includes at least one counter-electrode which is mounted on a belt-like carrier, the part of the marrow nail forming a portion of the electrode assembly is adapted to cooperate with said counter-electrode, and the carrier includes a fastener for tightening it around the fractured bone encompassing the marrow nail.
Claim 10
Dependent Claim
26 words
A device in accordance with claim 7, wherein that the belt-like carrier comprises a straplike part which on both sides is ribbed in the transverse direction.
Claim 11
Dependent Claim
34 words
A device in accordance with claim 7, wherein the carrier has a broad initial part adapted to cooperate with the fastener and this broad part adjoins two narrow strap-like parts which are spaced apart.
Claim 12
Dependent Claim
16 words
A device in accordance with claim 7, wherein the pick-up coil is accommodated in the fastener.
Claim 13
Dependent Claim
30 words
A device in accordance with claim 7, wherein the counter electrode is arranged on the belt-like carrier so that it can be slid along the longitudinal axis of the carrier.
Claim 14
Dependent Claim
29 words
A device in accordance with claim 1, wherein the electrode assembly includes a plurality of electrodes which are arranged spaced apart along the longitudinal axis of the marrow nail.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |