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US4561432A Expired / Lapsed US ⏱️ 0.0 years remaining

Fractured femur fixation system

Assignee: COARD FLOYD A MD (30%)
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Filing: 1983-09-15
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Granted: 1985-12-31
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Expires: 2003-09-15
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Abstract

Abstract Apparatus in the form of a system for fixing fractures of the femur which includes a nail to be inserted in the proximal extremity of the femur. The fore end of the nail includes a plurality of prongs which tend to spread apart as the nail is inserted. A guide rod is initially inserted into the femur and is used as a guide for the nail during its insertion. A locating bracket is utilized to facilitate inserting of the guide rod. The nail is connected to a driving handle which is then manually operated to insert the nail in its correct position. A force applying device, which includes a turnbuckle assembly, is to be connected to the nail to facilitate removal of the nail after the fracture in the femur has healed.

Inventors

  • 👤 Boris B. Mazor

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 22:51
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/17; A61B17/1721; A61B17/56; A61B17/58; A61B17/68; A61B17/72; A61B17/7283; A61B17/74; A61B17/742; A61B17/88; A61B17/8872; A61B17/7233; A61B17/7258; A61B17/7266

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 164 words
A fractured femur fixation system for assisting in healing of the femur, said system comprising: a nail adapted to be forced into the proximal extremity of the femur, said nail being formed of rigid sheet material, said nail being elongated terminating in a fore end and an aft end, said nail in transverse cross-section having an angular configuration, said fore end being formed into a plurality of prongs with there being a pair of side prongs and a center prong located there between, said center prong having a sharpened straight tip, each said side prong having a sharpened outwardly flared tip, the length of said side prongs being substantially equal to the length of said center prong, whereby as said nail is forced into the femur the said tips of said side prongs slightly spread apart which creates a holding force tending to retain said nail in its established position, whereby said system also includes means for nail placement and means for nail extraction.
Claim 2
Dependent Claim 164 words
A fractured femur fixation system for assisting in healing of the femur, said system comprising: a nail adapted to be forced into the proximal extremity of the femur, said nail being formed of rigid sheet material, said nail being elongated terminating in a fore end and an aft end, said nail in transverse cross-section having an angular configuration, said fore end being formed into a plurality of prongs with there being a pair of side prongs and a center prong located there between, said center prong having a sharpened straight tip, each said side prong having a sharpened outwardly flared tip, the length of said side prongs being substantially equal to the length of said center prong, whereby as said nail is forced into the femur the said tips of said side prongs slightly spread apart which creates a holding force tending to retain said nail in its established position, whereby said system also includes means for nail placement and means for nail extraction.
Claim 3
Dependent Claim 45 words
The system as defined in claim 1 wherein said means for nail placement includes: a guide rod to be initially inserted in said femur prior to inserting of said nail, said nail to be abuttingly located against said guide rod during insertion of said nail.
Claim 4
Dependent Claim 55 words
The system as defined in claim 2 wherein said means for nail placement further includes: a locating bracket to be positioned against the femur prior to insertion of said guide rod, connecting means mounted on said locating bracket, said guide rod to connect with said connecting means to facilitate correct insertion of said guide rod.
Claim 5
Dependent Claim 45 words
The system as defined in claim 3 wherein said means for nail placement further includes: a driving handle, said aft end of said nail to connect with said driving handle, said driving handle to be manally operated to forcibly insert said nail into the femur.
Claim 6
Dependent Claim 40 words
The system as defined in claim 4 wherein said means for nail extraction comprises: said nail includes an aperture, said aperture being located directly adjacent to said aft end, said aperture to facilitate connection with said means for nail extraction.
Claim 7
Dependent Claim 43 words
The system as defined in claim 5 wherein said means for nail extraction further comprises: connection means for connection with said aperture of said nail, said connection means including a force applying structure to be manually operated to effect removal of said nail.
Claim 8
Dependent Claim 45 words
The system as defined in claim 1 wherein said means for nail placement further includes: a driving handle, said aft end of said nail to connect with said driving handle, said driving handle to be manually operated to forcibly insert said nail into the femur.
Claim 9
Dependent Claim 39 words
The system is defined in claim 1 wherein said means for nail extraction comprises: said nail includes an aperture, said aperture being located directly adjacent said aft end, said aperture to facilitate connection with said means for nail extraction.
Claim 10
Dependent Claim 43 words
The system as defined in claim 8 wherein said means for nail extraction further comprises: connection means for connection with said aperture of said nail, said connection means including a force applying structure to be manually operated to effect removal of said nail.
Claim 11
Dependent Claim 203 words
A fractured femur fixation system for assisting in healing of the femur, said system comprising: a nail adapted to be forced into the proximal extremity of the femur, said nail being formed of rigid sheet material, said nail being elongated terminating in a fore end and an aft end, said nail in transverse cross-section having an angular configuration, said fore end being formed into a plurality of prongs with there being a pair of side prongs and a center prong located there between, said center prong having a sharpened straight tip, each said side prong having a sharpened outwardly flared tip, whereby as said nail is forced into the femur the said tips of said side prongs slightly spread apart which creates a holding force tending to retain said nail in its established position, whereby said system also includes means for nail placement and means for nail extraction; and said nail includes an aperture, said aperture being located directly adjacent said aft end, said aperture to facilitate connection with said means for nail extraction, said means for nail extraction including a force applying structure to be manually operated to effect removal of said nail, said means for nail extraction comprising a turnbuckle assembly.
Claim 12
Dependent Claim 203 words
A fractured femur fixation system for assisting in healing of the femur, said system comprising: a nail adapted to be forced into the proximal extremity of the femur, said nail being formed of rigid sheet material, said nail being elongated terminating in a fore end and an aft end, said nail in transverse cross-section having an angular configuration, said fore end being formed into a plurality of prongs with there being a pair of side prongs and a center prong located there between, said center prong having a sharpened straight tip, each said side prong having a sharpened outwardly flared tip, whereby as said nail is forced into the femur the said tips of said side prongs slightly spread apart which creates a holding force tending to retain said nail in its established position, whereby said system also includes means for nail placement and means for nail extraction; and said nail includes an aperture, said aperture being located directly adjacent said aft end, said aperture to facilitate connection with said means for nail extraction, said means for nail extraction including a force applying structure to be manually operated to effect removal of said nail, said means for nail extraction comprising a turnbuckle assembly.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-12-30 1989-07-01 1989-12-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-12-30 1993-07-01 1993-12-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-12-30 1997-07-01 1997-12-31 $7700.00 Window Closed / Lapsed

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