US6319255B1
Expired / Lapsed
US
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Prophylactic implant against fracture of osteoporosis-affected bone segments
Assignee: Eska Implants GmbH and Co KG
•
Filing: 1999-06-18
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Granted: 2001-11-20
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Expires: 2019-06-18
Abstract
Abstract A prophylactic implant is provided for protecting osteoporosis-affected bone segments against fractures, in particular the neck of the femur, the vertebral column and the wrist. According to a proposed solution, the implant comprises a thin-walled hollow reinforcing body ( 1 ) having such a large number of passages ( 2 ) in its outer wall ( 3 ) that the ratio of the total area of the passages ( 2 ) to the total surface area is at least 1:2.
Inventors
- 👤 Hans Grundei
- 👤 Wolfram Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:45
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/74; A61B17/742; A61B17/70; A61B17/72; A61F; A61F2/00; A61F2/02; A61F2/28; A61F2/2846; A61B17/7233; A61B17/7258; A61F2/30; A61F2/30721; A61F2/30744; A61F2/32; A61F2/36; A61F2/3601; A61F2/44; A61F2002/2821; A61F2002/2825; A61F2002/2832; A61F2002/2835; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2002/30064; A61F2002/30108; A61F2002/30199; A61F2002/30224; A61F2002/30235; A61F2002/30316; A61F2002/30535; A61F2002/30579; A61F2002/30593; A61F2002/30667; A61F2002/30668; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2/30907; A61F2002/30909; A61F2002/30912; A61F2002/3092; A61F2/3609; A61F2002/3625; A61F2230/00; A61F2230/0063; A61F2230/0069; A61F2250/00; A61F2250/0001; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00179; A61F2310/00293; A61F2310/00389; A61F2310/00592; A61F2310/00796; Y; Y10; Y10S; Y10S606/00; Y10S606/907; Y10S606/908
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
83 words
A method for prophylaxis against fractures of osteoporosis-affected bone segments, comprising the steps of creating a bore in the osteoporosis-affected bone segment, and inserting into the created bore a thin-walled hollow reinforcing body having such a large number of passages in its outer wall that the ratio of the total area of the passages to the total surface area is at least 1:2, such that bone material of the bone segment can grow through the passages into an interior of the reinforcing body.
Claim 2
Independent Claim
83 words
A method for prophylaxis against fractures of osteoporosis-affected bone segments, comprising the steps of creating a bore in the osteoporosis-affected bone segment, and inserting into the created bore a thin-walled hollow reinforcing body having such a large number of passages in its outer wall that the ratio of the total area of the passages to the total surface area is at least 1:2, such that bone material of the bone segment can grow through the passages into an interior of the reinforcing body.
Claim 3
Dependent Claim
31 words
The method of claim 1 , wherein the reinforcing body comprises a biocompatible metal, and wherein an open-mesh, three-dimensional spatial network structure is provided at least in sections on its surface.
Claim 4
Dependent Claim
31 words
The method of claim 1 , wherein the reinforcing body comprises a biocompatible plastic, and wherein the reinforcing body is deformable by a built-in mechanism for application of a pulling force.
Claim 5
Dependent Claim
43 words
The method of claim 1 , wherein the bore is made in a femur bone neck, and wherein the reinforcing body comprises a substantially cylindrical sleeve, which is distally closed with a convex head member and is proximally closable with a closing piece.
Claim 6
Dependent Claim
21 words
The method of claim 4 , wherein the convex head member is provided at least partially with a spatial network structure.
Claim 7
Dependent Claim
21 words
The method of claim 4 , wherein the proximal closing piece is provided at least partially with a spatial network structure.
Claim 8
Dependent Claim
43 words
The method of claim 4 , wherein a threaded shaft runs in the interior of the sleeve between the head member and the closing piece and is connected to these, the threaded shaft being capable of generating a pulling force upon its rotation.
Claim 9
Dependent Claim
51 words
The method of claim 4 , wherein a pulling cord is tensioned in the interior of the sleeve between the head member and the closing piece, the pulling cord being further tensionable from outside the sleeve in order to be able to generate a pulling force for deformation of the sleeve.
Claim 10
Dependent Claim
20 words
The method of claim 1 , wherein the outer wall is coated with an agent resorbable by the patient's body.
Claim 11
Dependent Claim
11 words
The method of claim 9 , wherein the agent is hydroxylapatite.
Claim 12
Dependent Claim
14 words
The method of claim 9 , wherein the agent comprises an alpha-tricalcium phosphate ceramic.
Claim 13
Dependent Claim
32 words
The method according to claim 1 , wherein the bore is made in bone selected from the group consisting of a femur bone neck, a vertebral column and a wrist joint bone.
Claim 14
Dependent Claim
31 words
The method of claim 1 , wherein an electrical coil is arranged on a magnetic core centrally arranged in the reinforcing body, the electrical coil being activatable from outside the body.
Claim 15
Dependent Claim
16 words
The method of claim 13 , wherein the magnetic core is constructed as a threaded shaft.
Claim 16
Dependent Claim
38 words
The method of claim 13 , wherein a head member of the reinforcing body has an extension protruding into the interior of the reinforcing body and has a recess for securing the centered position of the magnetic core.
Claim 17
Independent Claim
59 words
A method for prophylaxis against fractures of osteoporosis-affected bone segments, comprising the steps of creating a bore in the osteoporosis-affected bone segment, and inserting into the created bore a solid implant core forming a reinforcing core for the bone segment, the surface of the solid implant core being provided at least partially with an open-mesh, three-dimensional spatial network structure.
Claim 18
Independent Claim
59 words
A method for prophylaxis against fractures of osteoporosis-affected bone segments, comprising the steps of creating a bore in the osteoporosis-affected bone segment, and inserting into the created bore a solid implant core forming a reinforcing core for the bone segment, the surface of the solid implant core being provided at least partially with an open-mesh, three-dimensional spatial network structure.
Claim 19
Dependent Claim
32 words
The method according to claim 16 , wherein the bore is made in bone selected from the group consisting of a femur bone neck, a vertebral column and a wrist joint bone.
Claim 20
Independent Claim
41 words
A method for prophylaxis against fractures of osteoporosis-affected bone segments, comprising the steps of creating a bore in the osteoporosis-affected bone segment, and inserting into the created bore a hollow tube whose outer wall comprises an open-mesh, three-dimensional spatial network structure.
Claim 21
Independent Claim
41 words
A method for prophylaxis against fractures of osteoporosis-affected bone segments, comprising the steps of creating a bore in the osteoporosis-affected bone segment, and inserting into the created bore a hollow tube whose outer wall comprises an open-mesh, three-dimensional spatial network structure.
Claim 22
Dependent Claim
32 words
The method according to claim 18 , wherein the bore is made in bone selected from the group consisting of a femur bone neck, a vertebral column and a wrist joint bone.
Claim 23
Dependent Claim
36 words
The method of claim 18 , wherein the hollow tube forms a sleeve which is closable with a closing piece on its proximal end, wherein the closing piece also comprises an open-mesh, three-dimensional spatial network structure.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2004-11-19 | 2005-05-21 | 2005-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-11-19 | 2009-05-21 | 2009-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-11-19 | 2013-05-21 | 2013-11-20 | $7700.00 | Window Closed / Lapsed |