US3814089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill jig for total hip prosthesis
Assignee: Individual
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Filing: 1971-09-24
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Granted: 1974-06-04
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Expires: 1991-09-24
Abstract
Abstract A fixation of the femoral prosthesis member in the femur in performing hip prosthesis surgery, and the jig structure used in performing such fixation, wherein a jig comprising an elongated leg member having plural drill guide holes is releasably secured to the shank of the prosthesis member so that the drill guide holes aline precisely with fastener openings in the prosthesis shank. When the assembled prosthesis member and jig are in proper position relative to the femur, a drill bit is passed through the jig holes to drill holes through the cortex of the femur to receive fixation fasteners. An additional guide sleeve may be passed through such holes to guide a smaller drill bit for drilling holes in the femur beyond the prosthesis shank.
Inventors
- 👤 W Deyerle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:59
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/36; A61B; A61B17/00; A61B17/16; A61B17/17; A61B17/1739; A61B17/1742; A61B17/1753; A61F2/3609; A61F2002/3625; A61F2002/3631
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
220 words
A jig for attachment to a femoral prosthesis member of the type including an elongated shank having plural vertically spaced fixation fastener openings therein to be fixed in a channel formed in the femur during total hip prosthesis surgery, the jig comprising an elongated vertical rigid leg member having a plurality of cylindrical guide holes therein of predetermined size and vertical spacing, the openings in the shank correpsonding to the spacing and location of the holes in said leg member, an elongated rigid top member extending at right angular relation to said leg member having attachment means adapted for releasably fixing the jig to the upper portion fo said shank in firmly and precisely held immovable relation to the shank for supporting said leg member in parallelism with said shank with the guide holes precisely alined with the holes in the shank, the surfaces of the guide holes serving as directional guides for directing a drill bit of like diameter in exact axial alinement with the shank holes when a surgeon inserts such drill bit for accurately drilling holes through the cortex for fixation fasteners, said attachment portion of said top member comprising a short depending leg paralleling said leg member, said short depending leg having a downwardly facing abutment surface adapted to engage the top surface of the shank.
Claim 2
Dependent Claim
220 words
A jig for attachment to a femoral prosthesis member of the type including an elongated shank having plural vertically spaced fixation fastener openings therein to be fixed in a channel formed in the femur during total hip prosthesis surgery, the jig comprising an elongated vertical rigid leg member having a plurality of cylindrical guide holes therein of predetermined size and vertical spacing, the openings in the shank correpsonding to the spacing and location of the holes in said leg member, an elongated rigid top member extending at right angular relation to said leg member having attachment means adapted for releasably fixing the jig to the upper portion fo said shank in firmly and precisely held immovable relation to the shank for supporting said leg member in parallelism with said shank with the guide holes precisely alined with the holes in the shank, the surfaces of the guide holes serving as directional guides for directing a drill bit of like diameter in exact axial alinement with the shank holes when a surgeon inserts such drill bit for accurately drilling holes through the cortex for fixation fasteners, said attachment portion of said top member comprising a short depending leg paralleling said leg member, said short depending leg having a downwardly facing abutment surface adapted to engage the top surface of the shank.
Claim 3
Dependent Claim
82 words
A jig for attachment to a femoral prosthesis, as defined in claim 1, wherein said attachment portion of said top member comprises a short depending leg paralleling said leg member, said short depending leg having a downwardly facing abutment surface to engage the top surface of the shank and including jaw members extending below said abutment surface to releasably clamp the jig onto the upper portion of said shank with said guide holes precisely axially alined with said openings in said shank.
Claim 4
Dependent Claim
93 words
A jig for attachment to a femoral prosthesis, as defined in claim 1, wherein said attachment portion of said top member comprises a short depending leg paralleling said leg member, said short depending leg having a downwardly facing abutment surface to engage the top surface of the shank and screw means extending through said attachment portion to project into a threaded opening in the top of said shank to releasably clamp the jig onto the upper portion of said shank with said guide holes precisely axially alined with the openings in said shank.
Claim 5
Dependent Claim
104 words
A jig for attachment to a femoral prosthesis as defined in claim 1, including a shouldered tubular guide sleeve including an annular cylindrical portion having an outer diameter corresponding to said guide holes fitted within one of said guide holes and adapted to extend from said leg member to said shank through said guide holes and said openings and holes drilled in the femur therebetween, said sleeve having a smaller diameter bore extending therethrough to receive a corresponding diameter drill therethrough and adapted to guide the drill into deep cortex beyond said shank to receive end portions of fixation fasteners projecting beyond the shank.
Claim 6
Dependent Claim
104 words
A jig for attachment to a femoral prosthesis, as defined in claim 2, including a shouldered tubular guide sleeve including an annular cylindrical portion having an outer diameter corresponding to said guide holes fitted within one of said guide holes and adapted to extend from said leg member to said shank through said guide holes and said openings and holes drilled in the femur therebetween, said sleeve having a smaller diameter bore extending therethrough to receive a corresponding diameter drill therethrough and adapted to guide the drill into deep cortex beyond said shank to receive end portions of fixation fasteners projecting beyond the shank.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |