NZ516316A - Bone screw with axially two-part screw head - Google Patents

Bone screw with axially two-part screw head

Info

Publication number
NZ516316A
NZ516316A NZ516316A NZ51631699A NZ516316A NZ 516316 A NZ516316 A NZ 516316A NZ 516316 A NZ516316 A NZ 516316A NZ 51631699 A NZ51631699 A NZ 51631699A NZ 516316 A NZ516316 A NZ 516316A
Authority
NZ
New Zealand
Prior art keywords
screw
bone
axially
bore
screw head
Prior art date
Application number
NZ516316A
Inventor
Robert Frigg
Robert Ferus
Original Assignee
Synthes Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Synthes Ag filed Critical Synthes Ag
Priority to NZ516316A priority Critical patent/NZ516316A/en
Priority claimed from PCT/CH1999/000303 external-priority patent/WO2001003593A1/en
Publication of NZ516316A publication Critical patent/NZ516316A/en

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  • Surgical Instruments (AREA)

Abstract

A bone screw (14; 28) that is provided with a screw shaft (1) that is to be anchored in the bone in a direction coaxial with respect to the longitudinal axis (3) of the screw and with a screw head (2). The bone screw (14; 28) is configured as an axially composite element. At least the screw head (2) is axially two-part and comprises a screw shaft lower part (4) and a terminal upper part (5) that is linked with the lower part (4) and/or the screw head (1). Also disclosed is a device for osteosynthetic bone fixation with at least one such bone screw (14; 28). The device comprises: a) at least one plate-shaped, prismatic or cylindrical fixation element (41) that is provided with at least one bore (37) with a centre axis (30) for receiving the bone screw (14; 28) and a screw shaft lower part (36) and a screw head upper part (33), characterised in that: b) the bore (37) comprises a concave section (39) that tapers in the direction of the lower part (36); and c) the diameter of the lower part (4) is chosen such that the lower part (4) can be accommodated in the concave section (39) of the bore (37) at different angles between the longitudinal axis (3) of the screw and the centre axis (30) and is placed on the wall (40) of the bore (37).
NZ516316A 1999-07-07 1999-07-07 Bone screw with axially two-part screw head NZ516316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NZ516316A NZ516316A (en) 1999-07-07 1999-07-07 Bone screw with axially two-part screw head

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/CH1999/000303 WO2001003593A1 (en) 1999-07-07 1999-07-07 Bone screw with axially two-part screw head
NZ516316A NZ516316A (en) 1999-07-07 1999-07-07 Bone screw with axially two-part screw head

Publications (1)

Publication Number Publication Date
NZ516316A true NZ516316A (en) 2004-01-30

Family

ID=31987621

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ516316A NZ516316A (en) 1999-07-07 1999-07-07 Bone screw with axially two-part screw head

Country Status (1)

Country Link
NZ (1) NZ516316A (en)

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Legal Events

Date Code Title Description
PSEA Patent sealed
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RENW Renewal (renewal fees accepted)
LAPS Patent lapsed