Method of making a disposable unitary cytology chamber and filter card for centrifugation of fluid samples
AssigneeWhale Scientific, Inc.
InventorDaniel V. Griffin
Life of this patent
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Abstract
A unitary disposable chamber and filter unit including a method for making same in which a support surface on the chamber has energy directors such that when ultrasonic energy is applied thereto the energy directors will become molten and bond a filter card to the support surface at spaced locations away from the point of discharge of the fluid through the filter card onto a microscopic slide or other surface for analysis.
Claims5
The method of forming a unitary, disposable chamber and filter unit in which a chamber is provded with a liquid sample inlet and a discharge port which communicates between said inlet and an end flange, and a filter card is adapted to be positioned on said end flange with an opening therein aligned with said discharge port, the steps comprising:
- forming energy directors in the form of protruding ribs on a flat surface of said end flange;
- placing a filter card in overlying relation to said end flange with the opening in said filter card aligned with a discharge port;
- and
- applying ultrasonic energy to said end flange whereby to weld said energy directors to said filter cards.
Dependencies are inferred from the claim text.