Surgery – Respiratory method or device – Ozone or ion generation
Patent
1978-03-17
1980-04-08
Michell, Robert W.
Surgery
Respiratory method or device
Ozone or ion generation
128349R, 128348, 128DIG21, A61M 500, A61M 2500
Patent
active
041967313
ABSTRACT:
A flexible composition which is preferably radiopaque comprises a plastic material which may be mixed with from 10 to 50 percent by weight of a radiopaque filler. The plastic material comprises the product of (a) a block copolymer having thermoplastic, rubbery characteristics, having a central rubbery olefin block and terminal blocks of a polystyrene; (b) low crystallinity ethylene polymers such as poly (ethylene-vinyl acetate); and (c) a silicone gum containing a small amount of a silicon-bonded olefin group such as vinyl. Optionally, the addition of 5 to 40 percent by weight polypropylene may be included in these materials to improve their heat resistance and strength without affecting their transparency, when transparent materials are formulated.
REFERENCES:
patent: 3508551 (1970-04-01), Walters et al.
patent: 3691257 (1972-09-01), Kendrick et al.
patent: 3829903 (1974-08-01), Stati et al.
patent: 3865897 (1975-02-01), Falender
patent: 3932555 (1976-01-01), Goodrich et al.
Silicone Polyethylene Blends, Polymer Engr. & Sci., vol. 16, No. 1, Jan. 1976, Falender.
Becker Lawrence F.
Czuba Leonard F.
Laurin Dean G.
Baxter Travenol Laboratories Inc.
Ellis Garrettson
Flattery Paul C.
Kirby, Jr. John P.
Michell Robert W.
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