Plugs for the medullary canal of a bone

Details Plugs for the medullary canal of a bone Plugs for the medullary canal of a bone

1980-07-23

1982-08-17

Frinks, Ronald L.

Surgery

Truss

Pad

3 191, 3 1913, 128 92C, 128 92CA, A61F 100, A61F 124

Patent

active

043441904

ABSTRACT:
An implant 22, e.g. for locating a hip prosthesis, is placed in the medullary canal 18 of a bone 20 (e.g. the femur) and secured by pressurized cement 24. A push-fit plug 10 prevents cement penetrating down the canal. The plug can be biodegradable so that in time it dissolves away and does not modify the flexural rigidity of the cement/bone system and the risk of fractures occurring at the level of the plug is reduced. Additionally or alternatively, the outwardly facing end portion 16 of the plug may be generally conical so that the thickness of the cement increases gradually and the flexural rigidity likewise changes gradually.

REFERENCES:
patent: 3924274 (1975-12-01), Heimke et al.
patent: 4245359 (1981-01-01), Stuhmer
patent: 4274163 (1981-06-01), Malcom et al.
Advertising Brochure "Have You Got Time on Your Hands?", Howmedica International, Inc.
"Properties of Bovine Fibrin Absorbable Implants", Capperauld, Ian et al., 01/77, vol. 144.3-7
"Biethium-Sterile Absorbable Ox Fibrin Prosthesis".
"Compression Moulded Ox Fibrin as a Potentially Valuable Biomaterial", by Ian Capperauld MB FRCSEd.

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