Patent SU402364A1 successfully refreshed from Google Patents.
EP0547380A1
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EP
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Bone nail for the medical care of spoke bone fractures
Assignee: Stryker Trauma GmbH
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Filing: 1992-11-14
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Granted: —
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Expires: 2012-11-14
Abstract
Abstract A bone nail for the medical care of fractures of the radius, whereby a hollow shaft (10) is curved in a plane. The shaft is distally inserted in the medullary cavity and includes a proximal end (12) which is split (14). A spreading member having an outer threaded portion (44) cooperates with an inner threaded portion (18) in the split portion of said nail shaft to radially expand the proximal nail end upon rotation of the spreading body. A transverse hole at the distal end of the shaft receives a bone screw extending approximately perpendicular to the plane of the curvature.
Inventors
- 👤 Christian Prof. Dr.-med. Lefèvre
- 👤 Klaus Adolf Behrens
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 01:56
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/72; A61B17/7233; A61B17/7258
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
106 words
A bone nail for the medical care of spoke bone fractures, characterized by a hollow shaft (10) curved in a plane which shaft is distally inserted in the medullary cavity and includes a proximal end which is slotted, by a straddling member (36) having an outer threaded portion (44) cooperating with an inner threaded portion (18) in the slotted portion (12) of said nail shaft to radially expand the proximal nail end by rotating the straddling body (36), and by a cross bore (22) at the distal end of the shaft (10) to receive a bone screw extending approximately vertical to the plane of the curvature.
Claim 2
Dependent Claim
19 words
The bone nail of claim 1, characterized in that the cross bore is formed by an elongated opening (22).
Claim 3
Dependent Claim
27 words
The bone nail of claim 1 or 2, characterized in that the inner threaded portion extends towards both sides of the distal end of the slotted portion.
Claim 4
Dependent Claim
25 words
The bone nail of one of claims 1 to 3, characterized in that the proximal end portion (12) of the shaft (10) is formed straight.
Claim 5
Dependent Claim
26 words
The bone nail of one of claims 1 to 4, characterized in that an inner threaded portion (32) is formed in the distal end portion (20).
Claim 6
Dependent Claim
27 words
The bone nail of one of claims 1 to 5, characterized in that the distal end (20) of the shaft comprises at least a recess (28, 30).
Claim 7
Dependent Claim
35 words
The bone nail of one of claims 1 to 6, characterized in that the distal end portion of the shaft (10) comprises opposite flats (24, 26) extending approximately parallel to the plane of the curvature.
Claim 8
Dependent Claim
35 words
The bone nail of one of claims 1 to 7, characterized in that the distal end portion of the shaft (10) tapers slightly trumpet-like, preferably tapening from the cross bore (22) towards the distal end.
Claim 9
Dependent Claim
37 words
The bone nail of one of claims 1 to 8, characterized in that the length of the shaft (10) is selected such that the proximal end portion (12) is located in the area of the tuberositas radii.
Claim 10
Dependent Claim
23 words
The bone nail of one of claims 1 to 9, characterized in that the straddling body (36) comprises an axial through bore (48).
Claim 11
Dependent Claim
49 words
The bone nail of one of claims 1 to 10, characterized in that the straddling body (36) comprises a cap (50) preferably made of metal which is rotatably mounted but axially fixed on a screw bolt (38), and that the straddling body (36) includes a conical straddling face (52).
Claim 12
Dependent Claim
26 words
The bone nail of one of claims 1 to 11, characterized in that the proximal end portion (12) comprises a pair of diametral opposite slots (14).
References Cited (Backward Citations)
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