Patent EP0206777A2 successfully refreshed from Google Patents.
EP0206777A2
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EP
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Surgical tool
Assignee: Finsbury Instruments Ltd
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Filing: 1986-06-20
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Granted: —
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Expires: 2006-06-20
Abstract
Abstract A surgical tool, for use in hip replacement operations comprises a substantially linear stem which in use seats within a preformed femur cavity. A fixed arm extends medially from an upper portion of the stem and terminates in support for a rotatable cutter. One end of the cutter is received in a seating on the stem below the fixed arm. Ancilliary equipment includes a depth locating tool, so correctly positioning the hip implant in relation to the retained femur neck.
Inventors
- 👤 Michael Alexander Reykers Freeman
- 👤 Michael Antony Tuke
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 12:04
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/36; A61F2/3662; A61F2/367; A61B; A61B17/00; A61B17/16; A61B17/17; A61B17/1739; A61B17/1742; A61B17/175; A61B90/00; A61B90/06; A61B2090/062; A61F2/30767; A61F2/30771; A61F2002/30795; A61F2002/30807; A61F2002/30808; A61F2/3609; A61F2002/3611; A61F2/46; A61F2/4603; A61F2002/4619; A61F2/4657; A61F2002/4662; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00029
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
113 words
A surgical tool, intended for use in hip replacement operations, comprising a substantially linear locating stem which is adapted in use to seat within a preformed cavity in a femur and means for mounting a rotatable cutter on the stem, characterised in that a fixed arm extends medially from an upper portion of the stem and terminates in support means for the rotatable cutter and the stem has a seating below the arm capable of receiving one end of the rotatable cutter, the conformation of the stem and the cutter, when mounted in the support means and seating, generally corresponding to the conformation of the upper portion, including the neck, of a femur.
Claim 2
Dependent Claim
113 words
A surgical tool, intended for use in hip replacement operations, comprising a substantially linear locating stem which is adapted in use to seat within a preformed cavity in a femur and means for mounting a rotatable cutter on the stem, characterised in that a fixed arm extends medially from an upper portion of the stem and terminates in support means for the rotatable cutter and the stem has a seating below the arm capable of receiving one end of the rotatable cutter, the conformation of the stem and the cutter, when mounted in the support means and seating, generally corresponding to the conformation of the upper portion, including the neck, of a femur.
Claim 3
Dependent Claim
31 words
A surgical tool according to claim 1, characterised in that a wedge shaped portion is provided on the stem in the angle between the stem and the cutter adjacent the seating.
Claim 4
Dependent Claim
26 words
A surgical tool according to claim 1 or 2, characterised in that the cutter is arranged so that one end is permanently mounted within the seating.
Claim 5
Dependent Claim
23 words
A surgical tool according to any one of claims 1 to 3, characterised in that the cutter has longitudinal and/or helical cutting edges.
Claim 6
Dependent Claim
29 words
A surgical tool according to any one of claims 1 to 4, characterised in that the cutter is adapted to receive operating means at that end opposite the seating.
Claim 7
Dependent Claim
36 words
A surgical tool according to any one of claims 1 to 5, characterised in that the tool comprises one or more sleeves adapted to lodge over the stem to vary the effective diameter of the stem.
Claim 8
Dependent Claim
83 words
A surgical tool according to any one of claims 1 to 6 in combination with a depth locating tool comprising a fork portion which, in use, can adjustably engage an upper portion of the stem and an offset and medially extending side plate carried by the fork portion and provided with a marker device projecting rearwardly of the plate in a direction generally parallel to the plane of the fork portion and, in use, intended to lodge below the neck of the femur.
Claim 9
Dependent Claim
34 words
A surgical tool in combination with a depth locating tool according to claim 7 characterised in that the marker device is a pin projecting rearwardly of a downwardly directed portion of the side plate.
Claim 10
Dependent Claim
34 words
A surgical tool and depth locating tool according to claim 7 or 8 in combination with a finding rod adapted to enter the femur canal and capable of slidably carrying the depth locating tool.
Claim 11
Dependent Claim
55 words
A surgical tool and depth locating tool according to claim 7 or 8, optionally in combination with a finding rod according to claim 9, in combination with at least one substantially linear reaming device adapted to ream a desired substantially linear cavity in a femur stem and capable of slidably carrying the depth locating tool.
References Cited (Backward Citations)
No citation records indexed.
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