US3671980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure clamp for prosthetic appliance
Assignee: Individual
•
Filing: 1971-02-19
•
Granted: 1972-06-27
•
Expires: 1991-02-19
Abstract
Abstract The securing of an artificial limb to an amputated limb by means of a yieldable binding between the artifice and the amputated limb, affording freedom of articulation of a condylar joint therein without chafing of the skin or exerting painful pressures thereto; the yieldable binding being a self-contained built-in fluid pressure wedge with a source of compressible fluid and control means therefor.
Inventors
- 👤 Lincoln F Baird
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:58
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/78; A61F2/80; A61F2/7812; A61F2/7843
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
202 words
In combination with a prosthetic appliance of the type having a socket formed therein for receiving the stump of an amputated limb and having side walls adjacent the open end of such socket for embracing a portion of a condylar bone in the limb connected to such stump; a fluid pressure clamp comprising: 1. a triangular space formed on the inner side of one side wall of the prosthetic appliance in relation to a receding surface above the condylar bone of an amputated limb adapted to be disposed in said socket; 2. an expandable bladder mounted in said triangular space and adapted upon receipt of pressurized fluid to have bearing relation against a portion of the condylar bone of the amputated limb adapted to have its stump inserted in such socket; 3. an inturned lip on the rim of the open end of such one side wall overlying said expandable bladder; and 4. means for admitting fluid under pressure to said expandable bladder for expanding the latter to provide a pliant pressurized wedge between the condylar bone and such one side wall and adapted to yield in conformity with movements of the condylar bone upon articulation thereof relative to the prosthetic appliance.
Claim 2
Dependent Claim
202 words
In combination with a prosthetic appliance of the type having a socket formed therein for receiving the stump of an amputated limb and having side walls adjacent the open end of such socket for embracing a portion of a condylar bone in the limb connected to such stump; a fluid pressure clamp comprising: 1. a triangular space formed on the inner side of one side wall of the prosthetic appliance in relation to a receding surface above the condylar bone of an amputated limb adapted to be disposed in said socket; 2. an expandable bladder mounted in said triangular space and adapted upon receipt of pressurized fluid to have bearing relation against a portion of the condylar bone of the amputated limb adapted to have its stump inserted in such socket; 3. an inturned lip on the rim of the open end of such one side wall overlying said expandable bladder; and 4. means for admitting fluid under pressure to said expandable bladder for expanding the latter to provide a pliant pressurized wedge between the condylar bone and such one side wall and adapted to yield in conformity with movements of the condylar bone upon articulation thereof relative to the prosthetic appliance.
Claim 3
Dependent Claim
39 words
an expandable bladder mounted in said triangular space and adapted upon receipt of pressurized fluid to have bearing relation against a portion of the condylar bone of the amputated limb adapted to have its stump inserted in such socket;
Claim 4
Dependent Claim
39 words
an expandable bladder mounted in said triangular space and adapted upon receipt of pressurized fluid to have bearing relation against a portion of the condylar bone of the amputated limb adapted to have its stump inserted in such socket;
Claim 5
Dependent Claim
51 words
The pneumatic clamp in accordance with that of claim 1 wherein such prosthetic appliance is for the stump of a leg amputated below the knee and has a shelf-like recess formed within the open end of such socket for receiving and supporting the patella of the condylar bone of the knee.
Claim 6
Dependent Claim
15 words
a pliable plastic bag reservoir arranged in said prosthetic appliance and accessible to manual squeezing;
Claim 7
Dependent Claim
15 words
a pliable plastic bag reservoir arranged in said prosthetic appliance and accessible to manual squeezing;
Claim 8
Dependent Claim
11 words
a conduit communicating said expandable bladder with said pliable plastic bag;
Claim 9
Dependent Claim
11 words
a conduit communicating said expandable bladder with said pliable plastic bag;
Claim 10
Dependent Claim
113 words
The pneumatic clamp in accordance with that of claim 1 wherein such prosthetic appliance is for the stump of a leg amputated below the knee and has a shelf-like recess formed within the open end of such socket for receiving and supporting the patella of the condylar bone of the knee, and reinforcing means embedded within the walls of such socket comprising a U-shaped metal member having its bight portion partially circumscribing such shelf-like recess and its leg portions extending into the side walls thereof for maintaining the latter substantially rigid against deflection during articulation of the knee of the amputated leg therein and pressure of the condylar bone against said pneumatic wedge.
Claim 11
Dependent Claim
20 words
an inturned lip on the rim of the open end of such one side wall overlying said expandable bladder; and
Claim 12
Dependent Claim
20 words
an inturned lip on the rim of the open end of such one side wall overlying said expandable bladder; and
Claim 13
Dependent Claim
49 words
means for admitting fluid under pressure to said expandable bladder for expanding the latter to provide a pliant pressurized wedge between the condylar bone and such one side wall and adapted to yield in conformity with movements of the condylar bone upon articulation thereof relative to the prosthetic appliance.
Claim 14
Dependent Claim
49 words
means for admitting fluid under pressure to said expandable bladder for expanding the latter to provide a pliant pressurized wedge between the condylar bone and such one side wall and adapted to yield in conformity with movements of the condylar bone upon articulation thereof relative to the prosthetic appliance.
Claim 15
Dependent Claim
48 words
The pneumatic clamp in accordance with that of claim 1 including a self-contained source of pressurizable fluid, a conduit for communicating said source of pressurizable fluid with said expandable bladder, and control means in said conduit for controlling the flow of pressurizable fluid to and from said bladder.
Claim 16
Dependent Claim
33 words
a supply of fluid confined within said pliable plastic bag reservoir for transmittal therefrom into said expandable bladder via said conduit upon manual squeezing and compression of said pliable plastic bag reservoir; and
Claim 17
Dependent Claim
33 words
a supply of fluid confined within said pliable plastic bag reservoir for transmittal therefrom into said expandable bladder via said conduit upon manual squeezing and compression of said pliable plastic bag reservoir; and
Claim 18
Dependent Claim
40 words
valve means in said conduit between said pliable plastic bag reservoir and said expandable bladder closable for maintaining fluid under pressure in said expandable bladder and openable for releasing pressurized fluid therefrom for return to said pliable plastic bag reservoir.
Claim 19
Dependent Claim
40 words
valve means in said conduit between said pliable plastic bag reservoir and said expandable bladder closable for maintaining fluid under pressure in said expandable bladder and openable for releasing pressurized fluid therefrom for return to said pliable plastic bag reservoir.
Claim 20
Dependent Claim
23 words
The pneumatic clamp in accordance with that of claim 4 in which said self contained source of pressurized fluid and control means comprises:
Claim 21
Dependent Claim
91 words
The pneumatic clamp in accordance with that of claim 4 in which said self-contained source of pressurized fluid and control means comprises: a. a needle valve mounted within such prosthetic appliance and having a manually operated knob protruding therefrom exteriorly of such prosthetic appliance, b. a charged bulb of pressurized fluid Connected to one side of said needle valve within the prosthetic appliance, and c. a conduit having one end connected to the other side of said needle valve and the opposite end of said conduit communicating with said expandable bladder.
Claim 22
Dependent Claim
70 words
The pneumatic clamp in accordance with that of claim 6 including a T fitting having its head portion interposed between the ends of said conduit and its stem end protruding through the wall of such prosthetic appliance for exposure externally thereof, and a manually operatable valve stem in the stem end of said T fitting and exposed externally of said prosthetic appliance for relieving pressurized fluid from said inflatable bladder.
Claim 23
Dependent Claim
31 words
The pneumatic clamp in accordance with that of claim 7 in which said charged bulb of pressurized fluid is a CO2 bulb threadably connected to one side of said needle valve.
Claim 24
Dependent Claim
40 words
The pneumatic clamp in accordance with that of claim 8 including means within said needle valve for piercing said CO2 bulb upon threading thereof onto said needle valve for admitting CO2 gas into said one side of said needle valve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |