Material and splint for orthopaedical, surgical and veterinary use and method of making same

• US 5,500,163 A
• Filed: 12/07/1993
• Issued: 03/19/1996
• Est. Priority Date: 06/24/1991
• Status: Expired due to Fees

• Current Assignee: Tom P. M. G. Ponnet
• Original Assignee: Tom P. M. G. Ponnet
• Inventors: Ponnet, Tom P. M. G.
• Primary Examiner(s): Kuhns, Allan R.
• Application Number:
  US08/157,146
• Time in Patent Office: 833 Days
• Field of Search: 264/22, 264/129, 264/131, 264/233, 264/236, 264/45.1, 264/53, 264/211.12, 264/328.1, 602/5, 602/6, 602/8
• US Class Current: 264/473
• CPC Class Codes: A61L 15/12 containing macromolecular materials
• CPC Class Codes: C08G 18/831 by oxygen-containing compounds inclusive of carbonic acid halogenides, carboxylic acid halogenides and epoxy halides by aldehydes C08G18/84, by peroxides C08G18/86
• CPC Class Codes: C08L 2666/06 Homopolymers or copolymers of unsaturated hydrocarbons; Derivatives thereof
• CPC Class Codes: C08L 75/04 Polyurethanes

Abstract

A thermoplastic material, mainly to be used for splints and supports in orthopaedical, surgical and veterinary practice, is proposed for the fixation of body parts, the material including a copolymer of ε-caprolactone, polyurethane, and ethylene-butylene-styrene mixed with triallylcyanurate and oleic acid-imide, the copolymer mixture being gamma irradiated after processing, such that a degree of cross-linking of the molecules and a partially crystalline configuration results in a molded material with reproducible flexibility, elasticity and reciprocal stretch properties.

Claims

1. A method for the production of a deformable material for orthopaedical, surgical, veterinary and technical applications, based upon poly-ε

-caprolactone, wherein equimolecular weight amounts of ε

-caprolactone, polyurethane prepared of polyoxypropylene glycol and toluene-di-isocyanate, and ethylene-butylene-styrene-copolymer are reacted together under heating, and with reflux cooling of vapours during said reaction, triallylcyanurate in an amount of 0.3 to 3.5% wt./wt. and slowly oleic acid-imide in an amount of about 1% wt./wt. of the total mass are added, and the reaction product is cooled down, washed and granulated, and brought into the desired surgical or technical shape by injection moulding or extrusion, followed by irradiation with gamma rays of up to 2.5 Mrad, to obtain a solid flexible shape of flexibility and elasticity, as required for practical use.

2. A method for the manufacture of orthopaedical and surgical splint--or supporting means consisting of thermoplastic polymer material, wherein a shaped product obtained according to claim 1 is coated with a thin layer of a scourer.

3. A method for the manufacture of articles according to claim 2, wherein a thin layer of weak open-cell foam of polymer is spread upon the surface of the scourer.

4. Orthopaedical and surgical supporting means for the fixation of body parts after a fracture or an operation, wherein said means consist entirely of a material manufactured according to claim 2, or comprise partly such a material.

5. Orthopaedical and surgical supporting means for the fixation of body parts after a fracture or an operation, wherein said means consist entirely of a material manufactured according to claim 3.