US20010047174A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connection of a bone screw to a bone plate
Assignee: Zimmer GmbH
•
Filing: 2001-05-11
•
Granted: —
•
Expires: 2021-05-11
Abstract
Abstract With the invention the connection of a bone screw ( 12 ) to a bone plate ( 7 ) is shown. The head ( 13 ) of the bone screw ( 12 ) lies with a ring-shaped outer surface ( 10 ) in contact on a counter-surface ( 25 ) and can be fixed with a securing screw ( 15 ) which can be screwed in in the direction towards the counter-surface ( 25 ). In this the height ( 16 ) of the bone plate ( 7 ) is chosen such that it is less than or equal to the shaft diameter ( 19 ) of the bone screw ( 12 ), whereas the screw head ( 13 ) dips in into a cut-out ( 20 ) of the securing screw ( 15 ) and the upper side of the securing screw ( 15 ) terminates with the upper side of the bone plate ( 7 ).
Inventors
- 👤 Cosimo Donno
- 👤 Simon Casutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:37
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61B17/8033; A61B17/8042; A61B17/70; A61B17/7001; A61B17/7044; A61B17/7059; A61B17/7002; A61B17/7004; A61B17/7008; A61B17/7019; A61B17/7031; A61B17/8085; Y; Y10; Y10S; Y10S606/00; Y10S606/902
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
197 words
1 . Connection of a bone screw ( 12 ) to a bone plate ( 7 ) with a bone screw ( 12 ), the head ( 13 ) of which lies with a ring-shaped outer surface ( 10 ) in contact on a counter-surface ( 25 ) of the bone plate ( 7 ) and can be fixed with a securing screw ( 15 ) which can be screwed in in the bone plate ( 7 ) in the direction towards the counter-surface ( 25 ), with the bone plate ( 7 ) having a passage opening ( 17 ) for a shaft ( 18 ) of the bone screw ( 12 ), characterized in that the height ( 16 ) of the bone plate in the region of the bone screw ( 12 ) is less than or equal to the diameter ( 19 ) of the shaft ( 18 ); in that the screw head ( 13 ) dips in into a cut-out ( 20 ) of the securing screw ( 15 ); and in that the securing screw ( 15 ) terminates with the upper side of the bone plate ( 7 ).
Claim 2
Dependent Claim
197 words
1 . Connection of a bone screw ( 12 ) to a bone plate ( 7 ) with a bone screw ( 12 ), the head ( 13 ) of which lies with a ring-shaped outer surface ( 10 ) in contact on a counter-surface ( 25 ) of the bone plate ( 7 ) and can be fixed with a securing screw ( 15 ) which can be screwed in in the bone plate ( 7 ) in the direction towards the counter-surface ( 25 ), with the bone plate ( 7 ) having a passage opening ( 17 ) for a shaft ( 18 ) of the bone screw ( 12 ), characterized in that the height ( 16 ) of the bone plate in the region of the bone screw ( 12 ) is less than or equal to the diameter ( 19 ) of the shaft ( 18 ); in that the screw head ( 13 ) dips in into a cut-out ( 20 ) of the securing screw ( 15 ); and in that the securing screw ( 15 ) terminates with the upper side of the bone plate ( 7 ).
Claim 3
Dependent Claim
64 words
2 . Connection in accordance with claim 1 , characterized in that the securing screw ( 15 ) has a threaded length ( 27 ) which dips in into the bone plate ( 7 ) and which amounts to more than half the height ( 16 ) of the bone plate ( 7 ) in the region of the bone screw ( 12 ).
Claim 4
Dependent Claim
70 words
3 . Connection in accordance with claim 1 or claim 2 , characterized in that the head ( 13 ) of the bone screw is designed as a spherical pan, the outer surface ( 22 ) and the inner surface ( 23 ) of which have a same center ( 24 ); and in that the securing screw dips in into the pan with a suitable core ( 26 ).
Claim 5
Dependent Claim
58 words
4 . Connection in accordance claim 3 , characterized in that the cutout ( 20 ) of the securing screw ( 15 ) is dimensioned such that the head ( 13 ) of the bone screw ( 12 ) can be fixed at different angular positions with respect to the axis of the securing screw ( 15 ).
Claim 6
Dependent Claim
126 words
5 . Connection in accordance with claim 4 , characterized in that in relation to a middle position of the bone screw ( 12 ) in the direction of the axis of the securing screw ( 15 ) the head ( 13 ) permits a fixing position with an angular deflection α 1 at its outer surface ( 22 ); and in that the cut-out ( 20 ) of the securing screw ( 15 ) permits an angular deflection α 2 of similar magnitude for the screw head ( 13 ); and in that an angle β with respect to the center which is taken up by the counter-surface ( 10 , 25 ) is greater than the respective angle α 1 , α 2 .
Claim 7
Dependent Claim
29 words
6 . Connection in accordance claim 5 , characterized in that the angles α 1 , α 2 correspond in each case to an angle from 3° to 20°.
Claim 8
Dependent Claim
53 words
7 . Connection in accordance with any one of the claims 1 to 6 , comprising a bone plate ( 7 ) which is formed as a yoke which can be used as an anchoring body ( 4 , 14 ) for a support construction at a vertebra ( 1 , 2 ).
Claim 9
Dependent Claim
40 words
8 . Connection in accordance with any one of the claims 1 to 6 , comprising a bone plate ( 7 ) which can be used as a bridge ( 21 ) between two vertebrae ( 1 , 2 ).
Claim 10
Dependent Claim
38 words
9 . Connection in accordance with claim 8 , comprising a bridge ( 21 ) which bridges over the distance between two vertebrae ( 1 , 2 ) and is formed as a bending spring ( 35 ).
Claim 11
Dependent Claim
38 words
10 . Connection in accordance with any one of the claims 1 to 9 , characterized in that the shaft diameter ( 19 ) of the bone screw ( 12 ) amounts to between 2 and 10 mm.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.