US4923474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sleeve-shaped article, particularly for amputation stumps
Assignee: Ossur hf
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Filing: 1987-06-25
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Granted: 1990-05-08
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Expires: 2007-06-25
Abstract
Abstract A sleeve member (1) for enclosing and being fixed to a body part, such as an amputation stump, has a substantially frusto-conical shape with the truncated end thereof completely closed and at least slightly rounded and is made of an airtight material. The sleeve member (1) is characterized in that it substantially is made of an elastic material, at least the distal portion thereof exhibiting such anisotropy with regard to the elasticity that it has a relatively high elasticity in a radial direction and is substantially inelastic axially.
Inventors
- 👤 Bo Klasson
- 👤 Ossur Kristinsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:44
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/78; A61F2/80; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30014; A61F2002/30316; A61F2002/30329; A61F2002/30476; A61F2002/30479; A61F2002/5007; A61F2/5044; A61F2002/5055; A61F2/7812; A61F2002/7818; A61F2002/7831; A61F2002/7862; A61F2220/00; A61F2220/0025; A61F2250/00; A61F2250/0014; A61F2250/0018
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
101 words
A sleeve member for enclosing and being fixed to a body part, such as an amputation stump, said sleeve member substantially having a frusto-conical shape, including inner and outer portions, the truncated end of a distal portion of said member being completely closed and at least slightly rounded and said sleeve member being made of an airtight material, characterized in that said sleeve member (1) substantially is made of elastic material, at least the distal portion of said member exhibiting such an anisotropy with regard to the elasticity that it has a relatively high elasticity radially and is substantially inelastic axially.
Claim 2
Dependent Claim
101 words
A sleeve member for enclosing and being fixed to a body part, such as an amputation stump, said sleeve member substantially having a frusto-conical shape, including inner and outer portions, the truncated end of a distal portion of said member being completely closed and at least slightly rounded and said sleeve member being made of an airtight material, characterized in that said sleeve member (1) substantially is made of elastic material, at least the distal portion of said member exhibiting such an anisotropy with regard to the elasticity that it has a relatively high elasticity radially and is substantially inelastic axially.
Claim 3
Dependent Claim
26 words
A sleeve member according to claim 1, characterized in that the material thickness increases from a proximal end to the distal end of said sleeve member.
Claim 4
Dependent Claim
23 words
A sleeve member according to claim 1, characterized in that the material thickness increases from the proximal end to the distal end thereof.
Claim 5
Dependent Claim
42 words
A sleeve member according to claim 1, characterized in that the outer distal end portion of the sleeve member (1) is designed with means (2) permitting coupling to an external device attachable to the sleeve member (1), such as a prosthesis (11).
Claim 6
Dependent Claim
53 words
A sleeve member according to claim 1, characterized in that the elastic material which provides said anisotropy with regard to the elasticity comprises at least one layer of a highly elastic material (4) laminated to a layer of another material arranged such that it prevents the elasticity axially without substantially influencing it radially.
Claim 7
Dependent Claim
73 words
A sleeve member according to claim 1, characterized in that it is capable of being turned inside out and at least in the distal portion has such a material thickness that the inner portion (5) is stretched when turning the sleeve inside out and when unrolling the sleeve onto the body part (7) gives rise to forces which urge the adhering skin surface (8) towards the distal portion of the sleeve member (1).
Claim 8
Dependent Claim
22 words
A sleeve member according to claim 1, characterized in that the outer portion thereof is provided with a friction reducing surface layer.
References Cited (Backward Citations)
US980457A
Cited
US3377416A
Cited
US3991424A
Cited
DE2712342A1
Cited
FR2345138A1
Cited
US4634446A
Cited
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 |