Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1983-12-15
1986-04-01
Richman, Barry S.
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
65 17, 65 22, 73 641, 210927, 422 73, 422102, 436 69, 501 39, 501 53, C03C 306, G01N 3386
Patent
active
045798281
ABSTRACT:
An improved clot activator system for reducing the clotting time for blood samples in serum separation tubes, and the like, as well as increasing the degree of clotting, while at the same time, reducing the cost of production. This is achieved by the addition of glass pieces to the tube which pieces are formed in a particular way by a sol-gel process. The particles are pieces of glass, and are a porous substantially rigid amorphous inorganic sponge with substantial reactive surfaces. When a blood sample is introduced into a serum separation tube containing such pieces, the blood enters the interstices of the pieces causing fragmentation thereof, which fragmentation causes sound and shock waves which, in turn, enhance the clotting of the blood.
REFERENCES:
patent: 3667909 (1972-06-01), Thomas
patent: 4028085 (1977-06-01), Thomas
patent: 4153739 (1979-05-01), Kessler
patent: 4257886 (1981-03-01), Kessler
patent: 4402927 (1983-09-01), von Dardel et al.
Yamane et al, Preparation of a Gel From Metal Alkoxide and its Properties as a Precursor of Oxide Glass, J. Material Sci. 13 (1978) 865-70.
Becton Dickinson and Company
Grindle Robert P.
Gzybowski Michael S.
Richman Barry S.
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