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US4696289C1 Expired / Lapsed US ⏱️ 0.0 years remaining

Method of stimulating the venous-pump mechanism of the foot and for enhancement of arterial flow to the foot

Assignee: Novamedix Distribution Ltd
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Filing: 1986-08-01
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Granted: 2002-09-03
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Expires: 2006-08-01
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Abstract

Abstract The invention contemplates a non-invasive technique and apparatus for artificially stimulating the venous-return flow of blood from the foot by inducing fast-rising pulsed squeezing or necking-down of the vessels of the venous-pump mechanism within the foot. The stimulation results from transient flattening of the plantar arch, in that an induced transient spread of the heel with respect to the ball of the foot stretches, and therefore necks-down involved blood vessels; stimulation also results from such a squeeze of the plantar-arch region as to concurrently squeeze the involved blood vessels. Cyclically inflatable devices, local to the foot-pump region, are disclosed for inducing either or both of the indicated actions; and enhanced arterial throughput is period prior to a relaxation dwell between pulses.

Inventors

  • 👤 Arthur M N Gardner
  • 👤 Roger H Fox

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 19:09
CPC Classifications
A; A61; A61H; A61H9/00; A61H9/005; A61H9/0078; A61H2205/00; A61H2205/12; A61H2209/00

Claims Analysis

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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) 2005-09-02 2006-03-04 2006-09-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2009-09-02 2010-03-04 2010-09-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2013-09-02 2014-03-04 2014-09-03 $7700.00 Window Closed / Lapsed

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