US6342076B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prosthetic device for joints
Assignee: Handevelop AB
•
Filing: 1998-07-16
•
Granted: 2002-01-29
•
Expires: 2018-07-16
Abstract
Abstract In a prosthetic device for joints for implantation in humans and animals, a joint body is arranged between two fixing elements which are intended to be connected to adjoining bone parts. The joint body includes at least one essentially helical spring, and the ends of each spring are connected to the fixing elements.
Inventors
- 👤 Göran Lundborg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:55
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/42; A61F2/4241; A61F2/30721; A61F2/30742; A61F2/30767; A61F2/4225; A61F2/4261; A61F2/44; A61F2/442; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30014; A61F2002/3006; A61F2002/30062; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30113; A61F2002/30118; A61F2002/3013; A61F2002/30138; A61F2002/30158; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30448; A61F2002/30451; A61F2002/30535; A61F2002/30565; A61F2002/30566; A61F2002/30568; A61F2/30771; A61F2002/30878; A61F2002/4243; A61F2002/4251; A61F2002/4256; A61F2002/4258; A61F2210/00; A61F2210/0004; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2220/005; A61F2220/0058; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/001; A61F2230/0017; A61F2230/0026; A61F2250/00; A61F2250/0014; A61F2250/0018; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00017; A61F2310/00023; A61F2310/00179
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
132 words
A prosthetic device as a replacement for knuckle joints, intermediate and outer joints of fingers, and wrist joints of the fingers and hands for implantation in humans and animals, the device comprising: two fixing elements which are each adapted to be connected to adjoining bone parts; and a joint body arranged between the two fixing elements, the joint body consisting essentially of two essentially helical springs, each essentially helical spring having opposite ends and extending in a longitudinal direction of the joint body, the opposite ends of each of the two essentially helical springs being connected to the fixing elements, wherein at least one of interference between the two essentially helical springs and tension in the two essentially helical springs limits the joint body to bending substantially only in a single plane.
Claim 2
Dependent Claim
132 words
A prosthetic device as a replacement for knuckle joints, intermediate and outer joints of fingers, and wrist joints of the fingers and hands for implantation in humans and animals, the device comprising: two fixing elements which are each adapted to be connected to adjoining bone parts; and a joint body arranged between the two fixing elements, the joint body consisting essentially of two essentially helical springs, each essentially helical spring having opposite ends and extending in a longitudinal direction of the joint body, the opposite ends of each of the two essentially helical springs being connected to the fixing elements, wherein at least one of interference between the two essentially helical springs and tension in the two essentially helical springs limits the joint body to bending substantially only in a single plane.
Claim 3
Dependent Claim
35 words
A prosthetic device as claimed in claim 1 , wherein the two essentially helical springs differ from each other in respect of one or more of length, winding cross-section, pitch, pitch angle, and wire cross-section.
Claim 4
Dependent Claim
33 words
A prosthetic device for joints as claimed in claim 2 , wherein one or more of the two essentially helical springs is at least one of convex and concave in its longitudinal direction.
Claim 5
Dependent Claim
36 words
A prosthetic device for joints as claimed in claim 2 , wherein the joint body consists essentially of two parallel cylindrical springs in a plane extending perpendicular to a plane of bending of the joint body.
Claim 6
Dependent Claim
24 words
A prosthetic device for joints as claimed in claim 1 , wherein each spring is one of a tension spring and a compression spring.
Claim 7
Dependent Claim
33 words
A prosthetic device for joints as claimed in claim 5 , wherein one or more of the two essentially helical springs is at least one of convex and concave in its longitudinal direction.
Claim 8
Dependent Claim
36 words
A prosthetic device for joints as claimed in claim 5 , wherein the joint body consists essentially of two parallel cylindrical springs in a plane extending perpendicular to a plane of bending of the joint body.
Claim 9
Dependent Claim
27 words
A prosthetic device for joints as claimed in claim 1 , wherein one or more of the two essentially helical springs is cylindrical in its longitudinal direction.
Claim 10
Dependent Claim
36 words
A prosthetic device for joints as claimed in claim 8 , wherein the joint body consists essentially of two parallel cylindrical springs in a plane extending perpendicular to a plane of bending of the joint body.
Claim 11
Dependent Claim
33 words
A prosthetic device for joints as claimed in claim 1 , wherein one or more of the two essentially helical springs is at least one of convex and concave in its longitudinal direction.
Claim 12
Dependent Claim
31 words
A prosthetic device as claimed in claim 1 , wherein one of the two essentially helical springs is essentially concentrically arranged inside a bigger one of the two essentially helical springs.
Claim 13
Dependent Claim
28 words
A prosthetic device as claimed in claim 1 , wherein one or more of the two essentially helical springs has a wire surface coated with a biocompatible material.
Claim 14
Dependent Claim
111 words
A prosthetic device for joints as claimed in claim 1 , wherein the joint body extends between and joins the two fixing elements, and each fixing element includes a base plate arranged in a plane extending essentially perpendicular to the longitudinal direction of the joint body, the base plate having a surface connected to one end of the joint body, and a fixing means connected to surface of the base plate opposite the surface to which the joint body is connected, the fixing means projecting essentially in the longitudinal direction of the joint body, the fixing means being adapted to be connected to an anchoring means in an adjoining bone part.
Claim 15
Dependent Claim
49 words
A prosthetic device for joints as claimed in claim 8 , wherein the surface of the base plate which is connected to the joint body is designed such that the two essentially helical springs, when in a resting position, are arcuate in the longitudinal direction of the joint body.
Claim 16
Dependent Claim
32 words
A prosthetic device for joints as claimed in claim 8 , wherein fixing means projects from the base plate at an angle in relation to the longitudinal direction of the joint body.
Claim 17
Dependent Claim
42 words
A prosthetic device for joints as claimed in claim 8 , wherein each of the two essentially helical springs has windings, the windings of each spring closest to an associated base plate being supported by a structure projecting from the base plate.
Claim 18
Dependent Claim
36 words
A prosthetic device for joints as claimed in claim 1 , wherein the joint body consists essentially of two parallel cylindrical springs in a plane extending perpendicular to a plane of bending of the joint body.
Claim 19
Dependent Claim
23 words
A prosthetic device for joints as claimed in claim 1 , wherein the joint body includes a combination of tension and compression springs.
Claim 20
Dependent Claim
27 words
A prosthetic device for joints as claimed in claim 1 , wherein one or more of the two essentially helical springs is enclosed by a biocompatible material.
Claim 21
Dependent Claim
49 words
A prosthetic device for joints as claimed in claim 1 , wherein the joint body consists essentially of the two essentially helical springs arranged substantially parallel to one another and extending in a longitudinal direction of the joint body, ends of each spring being connected to the fixing elements.
References Cited (Backward Citations)
US3990116A
Cited
US4092740A
Cited
US4309777A
Cited
EP0057597A2
Cited
US4634445A
Cited
US5171284A
Cited
WO1991007149A1
Cited
EP0454645A1
Cited
WO1991016014A1
Cited
US5306310A
Cited
WO1994011606A1
Cited
US5507812A
Cited
US5458642A
Cited
US5534033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-01-28 | 2005-07-30 | 2006-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-01-28 | 2009-07-30 | 2010-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-01-28 | 2013-07-30 | 2014-01-29 | $7700.00 | Window Closed / Lapsed |