Deformable high energy storage tension spring

Details Deformable high energy storage tension spring Deformable high energy storage tension spring

1979-07-09

1981-11-24

Crowder, Clifford D.

Spring devices

Vehicle

Lever and nontorsion spring

267152, 403223, A61F 100

Patent

active

043015514

ABSTRACT:
A tension spring capable of large elastic deformation and having a high resistance to breakage and particularly, but not exclusively, for use as an artificial prosthetic ligament. The spring comprises an elongate elastic core having a low modulus of elasticity and defining opposed ends. A tensionable wrapping of thread having a high resistance to breakage is disposed in contact about the core to compress the core and to cause it to elongate axially upon opposite relative axial displacement of opposed ends of the wrapping secured to traction means.

REFERENCES:
patent: 3176316 (1965-04-01), Bodell
patent: 3806627 (1974-04-01), Harmon
patent: 3882551 (1975-05-01), Helmer et al.
patent: 3953896 (1976-05-01), Treace
patent: 4149277 (1979-04-01), Bokros
Drovin, et al., "A New Concept for the Design of Prosthesis for Knee Ligament", July, 1977.
Drovin, et al., "A New Concept for the Design of Prostheses for Ligament Replacements", 1978, Biomechanics, vol. VI-A, p. 395.
Wevers, "The Specification and Design of a Substitute Medial Collateral Ligament", Digest of the 11.sup.th International Conference on Medical and Biological Engineering; 1976; pp. 494-495.

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