Patent US5109843A successfully refreshed from Google Patents.
US5109843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extra to-intracorporeal power supply
Assignee: University of Cincinnati
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Filing: 1990-11-30
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Granted: 1992-05-05
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Expires: 2010-11-30
Abstract
Abstract A method of providing extracorporeal to intracorporeal power transfer in a patient employs a cylindrical primary coil inserted into a segment of small intestine which has been separated and closed at one end. The open end is attached to the abdominal wall providing an opening to the exterior of the body. A secondary coil is formed by wrapping a wire around the serosa of the segmented small intestine. This is in effect a transformer which will transfer energy from the primary coil to the secondary coil. The vascularization of the segment provides for rapid and efficient heat dissipation. This device can be used to power heart assist devices and artificial hearts. Since it is located in an internal pouch, proper location of the primary coil is ensured.
Inventors
- 👤 David B. Melvin
- 👤 David M. Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:54
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/372; A61N1/378; A61N1/3787; A61F; A61F2250/00; A61F2250/0001
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
108 words
A method of implanting an extra to intracorporeal power supply within a body comprising: attaching a vascularized intestinal segment to the abdominal wall said segment opened at the end attached to the abdominal wall and closed at the opposite end; forming an internal secondary coil of wire around serosa of said intestinal segment with first and second ends of said wire remaining in said body; inserting a primary coil through said open end into said intestinal segment whereby an alternating current passing through said primary coil causes an induction current in said secondary coil effective to power electrically operated prosthetic devices attached to said first and second ends.
Claim 2
Independent Claim
108 words
A method of implanting an extra to intracorporeal power supply within a body comprising: attaching a vascularized intestinal segment to the abdominal wall said segment opened at the end attached to the abdominal wall and closed at the opposite end; forming an internal secondary coil of wire around serosa of said intestinal segment with first and second ends of said wire remaining in said body; inserting a primary coil through said open end into said intestinal segment whereby an alternating current passing through said primary coil causes an induction current in said secondary coil effective to power electrically operated prosthetic devices attached to said first and second ends.
Claim 3
Dependent Claim
16 words
The method claimed in claim 1 wherein said intestinal segment is a segment of small intestine.
Claim 4
Dependent Claim
20 words
The method claimed in claim 1 wherein said power supply has a power output of at least about 20 watts.
Claim 5
Dependent Claim
15 words
The method claimed in claim 1 wherein said primary coil comprises a wire wound cylinder.
Claim 6
Dependent Claim
11 words
The method claimed in claim 4 wherein said cylinder is silicone.
Claim 7
Dependent Claim
33 words
The method claimed in claim 1 wherein said secondary coil is a preformed coil and is slipped over the open end of said intestinal segment before it is attached to the abdominal wall.
Claim 8
Dependent Claim
64 words
A primary coil adapted for use as an extra to-intracorporeal energy transfer device comprising a cylindrical core having a rounded first end and a tapered second end separated by a cylindrical central section; a wire having first and second ends said wire wrapped around said cylindrical central section; said first and second ends passing from said cylindrical central section through said tapered second end.
Claim 9
Dependent Claim
64 words
A primary coil adapted for use as an extra to-intracorporeal energy transfer device comprising a cylindrical core having a rounded first end and a tapered second end separated by a cylindrical central section; a wire having first and second ends said wire wrapped around said cylindrical central section; said first and second ends passing from said cylindrical central section through said tapered second end.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-05 | 1995-11-04 | 1996-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-05 | 1999-11-04 | 2000-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-05 | 2003-11-04 | 2004-05-05 | $7700.00 | Window Closed / Lapsed |