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Patent US4922893A successfully refreshed from Google Patents.
US4922893A
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Method for promoting flow of a body fluid within a human limb
Assignee: Wright Linear Pump Inc
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Filing: 1988-05-13
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Granted: 1990-05-08
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Expires: 2008-05-13
Abstract
Abstract An improved method and apparatus for promoting flow of a body fluid within a human limb, which has been subjected to an amputation procedure, wherein a novel distal inflatable cell having a pair of inflatable cell portions, one of which encompasses such a limb adjacent the stump end thereof and the other of which extends transversely across the stump end thereof, is utilized in a novel method of therapy to treat Lymphedema and similar fluid accumulation disorders of the extremities.
Inventors
- 👤 Edward S. Wright
- 👤 Sonja J. Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:23
CPC Classifications
A; A61; A61H; A61H9/00; A61H9/005; A61H9/0078
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
144 words
In a treatment for promoting movement of body fluid in a human limb from a relatively distal portion toward a relatively proximal portion thereof by applying thereto pressure components of predetermined magnitudes, the improved method of applying such pressure components comprising the steps of: initiating application of radially inwardly directed pressure to a given part of said distal portion directly adjacent an outermost end of said distal portion and substantially simultaneously initiating application of longitudinally directed pressure to said outermost end of said distal portion; simultaneously increasing the magnitudes of said longitudinally directed and radially inwardly directed pressures; and limiting the magnitude of said radially inwardly directed pressure to a magnitude less than the magnitude of said longitudinally directed pressure until said longitudinally directed pressure reaches a first predetermined magnitude which is therapeutically effective for promoting such distal to proximal movement of body fluid.
Claim 2
Dependent Claim
144 words
In a treatment for promoting movement of body fluid in a human limb from a relatively distal portion toward a relatively proximal portion thereof by applying thereto pressure components of predetermined magnitudes, the improved method of applying such pressure components comprising the steps of: initiating application of radially inwardly directed pressure to a given part of said distal portion directly adjacent an outermost end of said distal portion and substantially simultaneously initiating application of longitudinally directed pressure to said outermost end of said distal portion; simultaneously increasing the magnitudes of said longitudinally directed and radially inwardly directed pressures; and limiting the magnitude of said radially inwardly directed pressure to a magnitude less than the magnitude of said longitudinally directed pressure until said longitudinally directed pressure reaches a first predetermined magnitude which is therapeutically effective for promoting such distal to proximal movement of body fluid.
Claim 3
Dependent Claim
32 words
The method as claimed in claim 1 including the additional step of equalizing said radially inwardly directed and said longitudinally directed pressures at said first predetermined magnitude subsequent to said limiting step.
Claim 4
Dependent Claim
50 words
The method as claimed in claim 2 including the additional step of further applying radially inwardly directed pressure to at least one portion of such a human limb adjacent said distal portion thereof subsequent to said equalizing step and at a second predetermined magnitude less than said first predetermined magnitude.
Claim 5
Dependent Claim
68 words
The method as claimed in claim 3 wherein said further applying step is repeated to apply, in timed sequence, radially directed pressures of decreasing magnitudes to a respective sequence of longitudinally adjacent portions of such a human limb, each of which is relatively proximal with respect to the portion of such a human limb to which pressure is applied in the prior repetition of said further applying step.
Claim 6
Dependent Claim
32 words
The method as claimed in claim 4, including the additional step of simultaneously venting all pressures applied to such a human limb subsequent to a final repetition of said further applying step.
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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) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |