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US5951600A Expired / Lapsed US ⏱️ 0.0 years remaining

Medical devices using electrosensitive gels

Assignee: Individual
•
Filing: 1998-03-16
•
Granted: 1999-09-14
•
Expires: 2018-03-16
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Abstract

Abstract An intelligent material unit formed of an intelligent gel encapsulated within an enclosure. When the gel is actuated by a change in temperature thereof, such as heat and/or by an externally applied field such as an electrical current, electric field, magnetic field, ultrasonic energy (or sonic), microwave energy, a laser beam or a combination thereof, at least a portion of the wall of the container or enclosure is deformed to perform a mechanical function or operation such as that of an artificial heart valve. The valve may have a toroidal base defining an interior aperture and a plurality of hollow, flexible flaps each having an edge attached to the toroidal base and overlapping the entire interior aperture of the toroidal base. Each flexible flap is filled with a gel with an electrode operably attached to the gel in each of the flexible flaps. This enables the flaps to be made flexible or rigid in response to voltage applied to the gel.

Inventors

  • 👤 Jerome H. Lemelson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 18:59
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61K; A61K9/00; A61K9/0002; A61K9/0009; A61M25/0105; A61M25/0116; A61M25/10

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 78 words
An artificial heart valve, comprising a toroidal base defining an interior aperture; a plurality of hollow, flexible flaps each having an edge attached to said toroidal base and overlapping the entire interior aperture of said toroidal base; each flexible flap being filled with ER gel; and electrode means operably attached to said ER gel in each of said flexible flaps, enabling said flaps to be made flexible or rigid in response to voltage applied to said ER gel.
Claim 2
Dependent Claim 78 words
An artificial heart valve, comprising a toroidal base defining an interior aperture; a plurality of hollow, flexible flaps each having an edge attached to said toroidal base and overlapping the entire interior aperture of said toroidal base; each flexible flap being filled with ER gel; and electrode means operably attached to said ER gel in each of said flexible flaps, enabling said flaps to be made flexible or rigid in response to voltage applied to said ER gel.
Claim 3
Dependent Claim 20 words
The artificial heart valve of claim 1, further comprising computer control means for sequencing the operation of said heart valve.

References Cited (Backward Citations)

US3405728A Cited
US4971299A Cited
US5052662A Cited
US5269811A Cited
US5250167A Cited
US5241991A Cited
US5316261A Cited
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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) 2002-09-13 2003-03-15 2003-09-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2006-09-13 2007-03-15 2007-09-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2010-09-13 2011-03-15 2011-09-14 $7700.00 Window Closed / Lapsed

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