CA2240979A1 - Osteosynthesis apparatus - Google Patents

Osteosynthesis apparatus

Info

Publication number
CA2240979A1
CA2240979A1 CA002240979A CA2240979A CA2240979A1 CA 2240979 A1 CA2240979 A1 CA 2240979A1 CA 002240979 A CA002240979 A CA 002240979A CA 2240979 A CA2240979 A CA 2240979A CA 2240979 A1 CA2240979 A1 CA 2240979A1
Authority
CA
Canada
Prior art keywords
plate member
end portion
circular openings
cavities
bone
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002240979A
Other languages
French (fr)
Other versions
CA2240979C (en
Inventor
Kevin T. Foley
Peter M. Klara
Keith Maxwell
Lance Middleton
Matthew M. Morrison
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Howmedica Osteonics Corp
Original Assignee
Individual
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
Priority claimed from US08/575,601 external-priority patent/US5681311A/en
Application filed by Individual filed Critical Individual
Publication of CA2240979A1 publication Critical patent/CA2240979A1/en
Application granted granted Critical
Publication of CA2240979C publication Critical patent/CA2240979C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

A bone fixation apparatus (10) is disclosed which includes an elongated plate member (12) with at least two pairs of circular openings (24 26) and a series of circular openings (62) positioned along the plate member (12). The circular openings each form a cavity (30) with walls (31) extending between the upper and lower plate member surfaces (16, 18), the cavities having smaller diameter portions (32) at the plate member surfaces (16, 18) and a larger diameter portion (34) therebetween. The cavities are configured in the shape of two inverted cones (31a 31b) with matching base circles (31c) for allowing angulation of an implanted bone screw (14). A plurality of bone screws (14) are provided, each having a threaded first end portion (36) and an ellipsoid-shaped enlarged second end portion (40). A locking member (48) is also provided which connects to the second end portion (40) of each bone screw (14) for expanding the second end portion (40) so as to grip the cavity wall (31) of the plate member (12).
CA002240979A 1995-12-20 1996-12-20 Osteosynthesis apparatus Expired - Fee Related CA2240979C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/575,601 1995-12-20
US08/575,601 US5681311A (en) 1994-09-15 1995-12-20 Osteosynthesis apparatus
PCT/US1996/020707 WO1997022306A1 (en) 1995-12-20 1996-12-20 Osteosynthesis apparatus

Publications (2)

Publication Number Publication Date
CA2240979A1 true CA2240979A1 (en) 1997-06-26
CA2240979C CA2240979C (en) 2006-02-14

Family

ID=35892338

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002240979A Expired - Fee Related CA2240979C (en) 1995-12-20 1996-12-20 Osteosynthesis apparatus

Country Status (1)

Country Link
CA (1) CA2240979C (en)

Also Published As

Publication number Publication date
CA2240979C (en) 2006-02-14

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Effective date: 20151221

MKLA Lapsed

Effective date: 20151221