CA2443880A1 - Threaded washer - Google Patents

Threaded washer Download PDF

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Publication number
CA2443880A1
CA2443880A1 CA002443880A CA2443880A CA2443880A1 CA 2443880 A1 CA2443880 A1 CA 2443880A1 CA 002443880 A CA002443880 A CA 002443880A CA 2443880 A CA2443880 A CA 2443880A CA 2443880 A1 CA2443880 A1 CA 2443880A1
Authority
CA
Canada
Prior art keywords
central bore
washer
screw head
diameter
engaging
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
CA002443880A
Other languages
French (fr)
Other versions
CA2443880C (en
Inventor
Beat Schnek
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.)
Synthes USA LLC
Original Assignee
Synthes (U.S.A.)
Beat Schnek
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 US08/591,229 external-priority patent/US5899906A/en
Application filed by Synthes (U.S.A.), Beat Schnek filed Critical Synthes (U.S.A.)
Publication of CA2443880A1 publication Critical patent/CA2443880A1/en
Application granted granted Critical
Publication of CA2443880C publication Critical patent/CA2443880C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

Disclosed is an apparatus for the fixation of small bone fractures, comprising a washer with a central bore, the central bore having a diameter, and an external tapered thread for engaging an outer bone fragment, and a bone screw having a shaft with a thread with a mayor diameter less than the diameter of said central bore for engaging an inner bone fragment, and having a screw head larger than the central bore, wherein an upper portion near said screw head of the shaft is disposed within the central bore, and the screw head is disposed exterior the washer and engages a portion of the washer.
CA002443880A 1996-01-18 1996-12-03 Threaded washer Expired - Lifetime CA2443880C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/591,229 1996-01-18
US08/591,229 US5899906A (en) 1996-01-18 1996-01-18 Threaded washer
CA002242479A CA2242479C (en) 1996-01-18 1996-12-03 Threaded washer

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002242479A Division CA2242479C (en) 1996-01-18 1996-12-03 Threaded washer

Publications (2)

Publication Number Publication Date
CA2443880A1 true CA2443880A1 (en) 1997-07-24
CA2443880C CA2443880C (en) 2006-05-23

Family

ID=29585096

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002443873A Abandoned CA2443873A1 (en) 1996-01-18 1996-12-03 Threaded washer
CA002443880A Expired - Lifetime CA2443880C (en) 1996-01-18 1996-12-03 Threaded washer

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002443873A Abandoned CA2443873A1 (en) 1996-01-18 1996-12-03 Threaded washer

Country Status (1)

Country Link
CA (2) CA2443873A1 (en)

Also Published As

Publication number Publication date
CA2443873A1 (en) 1997-07-24
CA2443880C (en) 2006-05-23

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20161205