 Holding device for body fluids and tissues |
| OF PREFERRED EMBODIMENTS It should firstly be stated that in the variously described embodiments, ... |
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| Device and method for collecting, preparation and stabilizing a sample |
| The present invention provides a fluid collection assembly which allows for the safe and efficient ... |
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| Device for separating components of a fluid sample |
| The present invention is illustrated in FIGS. 1-4 wherein assembly 10 includes an outer container 1... |
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| Device and method for separating components of a fluid sample |
| The present invention may be embodied in other specific forms and is not limited to any specific ... |
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| Device and method for separating components of a fluid sample |
| The present invention may be embodied in other specific forms and is not limited to any specific ... |
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| Heavy metal-binding agent process |
| What is claimed is: 1. A method for removing heavy metals present in a solution or gas comprising ... |
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| Method of preparing an asbestos diaphragm |
| OF THE INVENTION According to one embodiment of this invention, an asbestos diaphragm can be ... |
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| Converting low molecular weight olefins over zeolites |
| We claim: 1. A process for producing a gasoline fraction having therein no more than about 20% by ... |
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| Recovery of 1,3-butadiene from a C.sub.4 -hydrocarbon mixture |
| We claim: 1. A process for the recovery of 1,3-butadiene, using a selective solvent, from a C.sub.4 ... |
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| Tangentially fed upflow sand filter method and apparatus |
| I claim: 1. Method for purifying water, comprising introducing water tangentially into a water ... |
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Device for use in the centrifugal separation of components of a liquid
| Details |
Inventors: Ballies, Uwe;
Assignee:
Primary Examiner: Sever; Frank
Assistant Examiner:
Attorney, Agent or Firm: Cushman, Darby & Cushman
A device for use in blood centrifugation processes, said device comprising a centrifuge tube containing a substantially rigid separator element and said tube having walls of predetermined thickness and material of construction to enable flexing of only that portion of the tube wall coincident with said separator element, sufficient to enable passage of liquid by said separator element, in response to centrifugal force. |
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DETAILED DESCRIPTION What I claim is: 1.
For use in centrifugal separation of a liquid having at least two components having different specific weights, a device comprising: wall means of a predetermined thickness of synthetic plastic material defining a separator tube having an inner face of generally round transverse cross-sectional figure; a generally cylindrical, piston-like, substantially rigid, separator element having a specific weight which lies between the respective specific weights of said two components; said separator element having an outer peripheral surface with a generally round transverse cross-sectional figure; said separator element outer peripheral surface having at least an axially intermediate portion thereof which is of substantially the same diameter as said inner face of said separator tube wall means; said separator element being frictionally, axially slidably received in said separator tube; said separator element being comparatively rigid relative to said separator tube wall means and said separator tube wall means being sufficiently flexible relative to said separator element, to enable substantially only that portion of said tube wall means conincident to said separator element to flex and thereby increase in diameter sufficient to enable passage of liquid between said that portion and said separator element, in response to centrifugal force.
2.
A separator device according to claim 1, in which the separator element is releasably connected to a piston or rod arranged to slide within the tube, and is equipped with a connector for a hypodermic needle.
3.
A separator device according to any of claims 1 or 2, in which the connector for the hypodermic needle is releasably arranged on the separator tube.
4.
A separator device according to any of claims 1, 2 or 3, in which the separator tube or a space in communication with a connector for a hypodermic needle is connected to a reduced-pressure chamber.
5.
A separator device according to claim 1, in which the separator element is connected to a piston rod in the separator tube through a fracture section, and acts as a suction piston
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Liquid Purification 
