GB2118043A - Femoral prosthesis - Google Patents

Femoral prosthesis Download PDF

Info

Publication number
GB2118043A
GB2118043A GB08210408A GB8210408A GB2118043A GB 2118043 A GB2118043 A GB 2118043A GB 08210408 A GB08210408 A GB 08210408A GB 8210408 A GB8210408 A GB 8210408A GB 2118043 A GB2118043 A GB 2118043A
Authority
GB
United Kingdom
Prior art keywords
stem
hook
fin
portion
femur
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
GB08210408A
Other versions
GB2118043B (en
Inventor
Robin Arthur Denham
Original Assignee
Robin Arthur Denham
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
Application filed by Robin Arthur Denham filed Critical Robin Arthur Denham
Priority to GB08210408A priority Critical patent/GB2118043B/en
Publication of GB2118043A publication Critical patent/GB2118043A/en
Application granted granted Critical
Publication of GB2118043B publication Critical patent/GB2118043B/en
Application status is Expired legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/36Femoral heads ; Femoral endoprostheses
    • A61F2/3662Femoral shafts
    • A61F2/367Proximal or metaphyseal parts of shafts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/36Femoral heads ; Femoral endoprostheses
    • A61F2/3609Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625Necks
    • A61F2002/3631Necks with an integral complete or partial peripheral collar or bearing shoulder at its base

Abstract

A femoral prosthetic component comprises an intramedullar stem 1, a part-spherical head 5 on the proximal end of the stem 1, a distally turned hook 6 for hooking over a portion of cement which fixes the stem 1 in the femur, a vertical fin 8 between the hook 6 and the stem 1, and a vertical bore 7 through the hook 6 for receiving a rod-form introducer with a slotted end for embracing the fin 8. <IMAGE>

Description

SPECIFICATION A femoral prosthetic component According to the present invention, there is provided a femoral prosthetic component, comprising an intramedullar stem, a partspherical head fixed to the proximal end of the stem, and a hook fixed to said stem and for hooking over a portion of cement which fixes the stem in the femur.

In order that the invention may be clearly understood and readily carried into effect, reference will now be made, by way of example to the accompanying drawings, in which:~ Figure 1 shows an anterior elevation of a femoral prosthetic component, and Figure 2 shows a top plan view thereof.

Referring to the drawings, the component comprises an intramedullar stem 1 which curves inwardly at an upper zone 2 thereof formed with a shoulder 3 followed by a neck 4 carrying a partspherical femoral head 5. Projecting laterally from the portion 2 adjacent the shoulder 3 is a distally turned hook 6 formed with a vertical through bore 7. Between the distally turned end of the hook 6 and the portion 2 is formed a vertical fin 8. All of the items 1 to 8 have been forged as one piece.

The fin 8 serves to strengthen the hook 6 and, moreover, by engagement by the slotted end of a rod-form introducer inserted into the bore 7, enables the surgeon to control insertion of the stem into the femur. The hook 6 serves to hook over the wedge-shaped portion of cement which, following cementing of the stem 1 into the femur, exists in the intramedullarly canal between the lateral side of the portion 2 and the femur.

Claims (Filed on 8/4/83).

1. A femoral prosthetic component, comprising an intramedullar stem, a part-spherical head fixed to the proximal end of the stem, and a hook fixed to said stem and for hooking over a portion of cement which fixes the stem in the femur.

2. A component as claimed in claim 1, and further comprising a substantially vertical fin extending distally from said hook to said stem.

3. A component as claimed in claim 2, and further comprising a substantially vertical hole through said hook said hole being of a width greater than the thickness of said fin, and said hole ovelapping said fin as viewed in plan.

4. In combination, a component as claimed in claim 3 and an elongate introducer formed in one end thereof with a slot for engaging an edge of said fin on insertion of the region of said one end into said hole.

5. A femoral prosthetic component, substantially as hereinbefore described with reference to the accompanying drawing.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A femoral prosthetic component According to the present invention, there is provided a femoral prosthetic component, comprising an intramedullar stem, a partspherical head fixed to the proximal end of the stem, and a hook fixed to said stem and for hooking over a portion of cement which fixes the stem in the femur. In order that the invention may be clearly understood and readily carried into effect, reference will now be made, by way of example to the accompanying drawings, in which:~ Figure 1 shows an anterior elevation of a femoral prosthetic component, and Figure 2 shows a top plan view thereof. Referring to the drawings, the component comprises an intramedullar stem 1 which curves inwardly at an upper zone 2 thereof formed with a shoulder 3 followed by a neck 4 carrying a partspherical femoral head 5. Projecting laterally from the portion 2 adjacent the shoulder 3 is a distally turned hook 6 formed with a vertical through bore 7. Between the distally turned end of the hook 6 and the portion 2 is formed a vertical fin 8. All of the items 1 to 8 have been forged as one piece. The fin 8 serves to strengthen the hook 6 and, moreover, by engagement by the slotted end of a rod-form introducer inserted into the bore 7, enables the surgeon to control insertion of the stem into the femur. The hook 6 serves to hook over the wedge-shaped portion of cement which, following cementing of the stem 1 into the femur, exists in the intramedullarly canal between the lateral side of the portion 2 and the femur. Claims (Filed on 8/4/83).
1. A femoral prosthetic component, comprising an intramedullar stem, a part-spherical head fixed to the proximal end of the stem, and a hook fixed to said stem and for hooking over a portion of cement which fixes the stem in the femur.
2. A component as claimed in claim 1, and further comprising a substantially vertical fin extending distally from said hook to said stem.
3. A component as claimed in claim 2, and further comprising a substantially vertical hole through said hook said hole being of a width greater than the thickness of said fin, and said hole ovelapping said fin as viewed in plan.
4. In combination, a component as claimed in claim 3 and an elongate introducer formed in one end thereof with a slot for engaging an edge of said fin on insertion of the region of said one end into said hole.
5. A femoral prosthetic component, substantially as hereinbefore described with reference to the accompanying drawing.
GB08210408A 1982-04-08 1982-04-08 Femoral prosthesis Expired GB2118043B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08210408A GB2118043B (en) 1982-04-08 1982-04-08 Femoral prosthesis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08210408A GB2118043B (en) 1982-04-08 1982-04-08 Femoral prosthesis

Publications (2)

Publication Number Publication Date
GB2118043A true GB2118043A (en) 1983-10-26
GB2118043B GB2118043B (en) 1985-01-16

Family

ID=10529605

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08210408A Expired GB2118043B (en) 1982-04-08 1982-04-08 Femoral prosthesis

Country Status (1)

Country Link
GB (1) GB2118043B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158534A2 (en) * 1984-04-13 1985-10-16 Finsbury (Instruments) Limited Hip implant
GB2197204A (en) * 1986-11-10 1988-05-18 Joint Replacement Instrumentat Femoral prosthesis
EP0339879A1 (en) * 1988-04-26 1989-11-02 Headcorn Instrumentation Ltd. Hip prosthesis
US5755811A (en) * 1995-08-25 1998-05-26 Zimmer, Inc. Prosthetic implant with fins

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1384453A (en) * 1972-03-04 1975-02-19 Findlay E G Artificial joints
EP0040884A1 (en) * 1980-05-23 1981-12-02 Jan Willem Smit Orthopedic coupling device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1384453A (en) * 1972-03-04 1975-02-19 Findlay E G Artificial joints
EP0040884A1 (en) * 1980-05-23 1981-12-02 Jan Willem Smit Orthopedic coupling device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158534A2 (en) * 1984-04-13 1985-10-16 Finsbury (Instruments) Limited Hip implant
EP0158534A3 (en) * 1984-04-13 1986-07-30 Finsbury (Instruments) Limited Hip implant
US4670015A (en) * 1984-04-13 1987-06-02 Finsbury (Instruments) Limited Hip implant
GB2197204A (en) * 1986-11-10 1988-05-18 Joint Replacement Instrumentat Femoral prosthesis
GB2197204B (en) * 1986-11-10 1990-08-15 Joint Replacement Instrumentat Femoral prosthesis
EP0339879A1 (en) * 1988-04-26 1989-11-02 Headcorn Instrumentation Ltd. Hip prosthesis
US4944764A (en) * 1988-04-26 1990-07-31 Headcorn Instrumentation Ltd. Hip prosthesis
US5755811A (en) * 1995-08-25 1998-05-26 Zimmer, Inc. Prosthetic implant with fins

Also Published As

Publication number Publication date
GB2118043B (en) 1985-01-16

Similar Documents

Publication Publication Date Title
US4840632A (en) Hip prosthesis
US9072605B2 (en) Knee arthroplasty prosthesis
US4795473A (en) Extramedullary femoral head-neck prosthesis and method of implanting same
US6447546B1 (en) Apparatus and method for fusing opposing spinal vertebrae
US5092896A (en) Finger joint prosthesis
EP0978262B1 (en) Alignment guide for slotted prosthetic stem
US5741266A (en) Pin placement guide and method of making a bone entry hole for implantation of an intramedullary nail
US9265519B2 (en) Tunnel notcher and guidewire delivery device
US6613093B2 (en) Bone engaging prosthesis
US3896504A (en) Hip joint prosthesis
US6488687B1 (en) Joint replacement method and apparatus
US5871540A (en) Patellar implant component and method
EP0941037B1 (en) Prophylactic implant for protecting bone segments affected by osteoporosis against fractures
US6102957A (en) Asymmetric hip stem
US4714475A (en) Tibial member of a knee joint endoprothesis
US4608055A (en) Femoral component for hip prosthesis
US4385405A (en) Hip prosthesis and its method of fitting
US4546501A (en) Hip prosthesis
US5824107A (en) Prosthetic joint cup and insert therefor
DE69731638T2 (en) Device for migration prevention of sewing thread in the bone tunnel
EP0904748B1 (en) Joint prosthesis system with a rotatable component having a keyed axial securement
US5571194A (en) Femoral augmentation system for artificial knee joint
US4733654A (en) Intramedullar nailing assembly
US6797006B2 (en) Porous unicondylar knee
EP0441577B1 (en) Intramedullary hip screw

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970408