US20050177167A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable screw for stabilization of a joint or a bone fracture
Assignee: Muckter Helmut
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Filing: 2005-04-07
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Granted: —
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Expires: 2025-04-07
Abstract
Abstract A bone screw has a flexible shaft which prevents relative movements in the direction of tension, but permits smaller movements in all other directions. The bone screw is configured as a screw insertable into medullary cavities having a curved surface, where the screw adapts to the given contour.
Inventors
- 👤 Helmut Muckter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:40
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61B17/866; A61B17/8685; A61B17/8625; A61B17/863
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
94 words
1 . A screw implant for stabilization of a joint or a bone fracture, comprising a screw including a head portion on one end, a threaded portion on another end, and a shaft portion extending between the head portion and the threaded portion and defining an axis, wherein the shaft portion is constructed in the form of several strands and has a flexibility that maintains a natural movement of bone participants in an area of the joint or bone facture but prevents a movement in a direction of the axis away from one another.
Claim 2
Dependent Claim
94 words
1 . A screw implant for stabilization of a joint or a bone fracture, comprising a screw including a head portion on one end, a threaded portion on another end, and a shaft portion extending between the head portion and the threaded portion and defining an axis, wherein the shaft portion is constructed in the form of several strands and has a flexibility that maintains a natural movement of bone participants in an area of the joint or bone facture but prevents a movement in a direction of the axis away from one another.
Claim 3
Dependent Claim
22 words
2 . The screw implant of claim 1 , wherein the shaft portion is a wire cable comprised of several wire strands.
Claim 4
Dependent Claim
18 words
3 . The screw implant of claim 1 , wherein the shaft portion is a rope or cord.
Claim 5
Dependent Claim
45 words
4 . The screw implant of claim 1 , wherein the threaded portion includes a bone thread and a nut connected in one piece with the bone thread for attachment of an external wrench to screw the threaded portion into one of the bone participants.
Claim 6
Dependent Claim
16 words
5 . The screw implant of claim 4 , wherein the nut is a hexagon nut.
Claim 7
Dependent Claim
39 words
6 . The screw implant of claim 4 , wherein the head portion is a bolt having a socket for attachment of an external wrench for securement of the head portion in the other one of the bone participants.
Claim 8
Dependent Claim
16 words
7 . The screw implant of claim 6 , wherein the socket is a hexagon socket.
Claim 9
Dependent Claim
50 words
8 . The screw implant of claim 4 , wherein the head portion includes a bolt connected to the shaft portion and a nut screwed onto the bolt and provided for attachment of an external wrench for securement of the head portion in the other one of the bone participants.
Claim 10
Dependent Claim
21 words
9 . The screw implant of claim 1 , and further comprising a reinforcement placed from outside over the shaft portion.
Claim 11
Dependent Claim
20 words
10 . The screw implant of claim 9 , wherein the reinforcement is at least one sleeve or a spiral.
Claim 12
Dependent Claim
35 words
11 . The screw implant of claim 1 , wherein the screw is made from a material selected from the group consisting of biocompatible metal, biocompatible absorbable plastic, biocompatible non-absorbable plastic, and a combination thereof.
Claim 13
Dependent Claim
18 words
12 . The screw implant of claim 1 , wherein the screw forms a unitary structure before implantation.
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