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US 5,858,015 AGranted
Container for blood
AssigneeDideco S.p.A.
InventorMassimo Fini
Life of this patent
Estimating the term…
Abstract
A container for blood having a generally rigid support which, in combination with a filter element such as a screen, defines a blood inlet chamber of substantially constant size and geometric shape. An expandable reservoir portion is associated with the support and, preferably, has a bellows-like configuration.
Claims13
A blood reservoir, comprising:
- (a) a rigid support having a recessed portion;
- (b) a sheet filter for filtering blood, the sheet filter having a periphery which is fixedly attached to the rigid support and overlying the portion of the rigid support which is recessed, said sheet filter in a generally fixed position, the sheet filter and the overlied portion of the rigid support defining a blood inlet chamber having a substantially constant volume;
- (c) a flexible membrane overlying the sheet filter and secured by a liquid-tight seal to the rigid support, defining a variable-volume reservoir chamber, the membrane being expandable upon the introduction of blood into the reservoir chamber to expand the reservoir chamber from a first, at rest, substantially empty position, to a second, expanded, substantially full position, the blood inlet chamber and reservoir chamber in fluid communication through the sheet filter;
- (d) a cardiotomy return connector in fluid communication with the inlet chamber;
- (e) a blood inlet in fluid communication with the inlet chamber;
- and
- (f) a blood outlet in fluid communication with the reservoir chamber.
4 more elements
A blood reservoir, comprising:
- (a) a rigid support having a recessed portion;
- (b) a sheet filter for filtering blood, the sheet filter having a periphery which is fixedly attached to the rigid support and overlying the portion of the rigid support which is recessed, said sheet filter in a generally fixed position, the sheet filter and the overlied portion of the rigid support defining a blood inlet chamber having a substantially constant volume;
- (c) a flexible membrane overlying the sheet filter and secured by a liquid-tight seal to the rigid support, defining a variable-volume reservoir chamber, the membrane being expandable upon the introduction of blood into the reservoir chamber to expand the reservoir chamber from a first, at rest, substantially empty position, to a second, expanded, substantially fill position, the blood inlet chamber and reservoir chamber in fluid communication through the sheet filter;
- (d) a vent in fluid communication with the reservoir chamber, having a first and second vent pipe extending into the reservoir chamber, the second vent pipe extending into the reservoir chamber a distance further than the first vent pipe;
- (e) a blood inlet in fluid communication-with the inlet chamber;
- and
- (f) a blood outlet in fluid communication with the reservoir chamber.
4 more elements
A blood reservoir, comprising:
- (a) a rigid support having a recessed portion;
- (b) a sheet filter for filtering blood, the sheet filter having a periphery which is fixedly attached to the rigid support and overlying the portion of the rigid support which is recessed, said sheet filter in a generally fixed position, the sheet filter and the overlied portion of the rigid support defining a blood inlet chamber having a substantially constant volume;
- (c) a flexible membrane overlying the sheet filter and secured by a liquid-tight seal to the rigid support, the flexible membrane having a bellows configuration and defining a variable-volume reservoir chamber, the membrane being expandable upon the introduction of blood into the reservoir chamber to expand the reservoir chamber from a first, at rest, substantially empty position, to a second, expanded, substantially full position, the blood inlet chamber and reservoir chamber in fluid communication through the sheet filter;
- (d) a blood inlet in fluid communication with the inlet chamber;
- and
- (e) a blood outlet in fluid communication with the reservoir chamber.
3 more elements
Dependencies are inferred from the claim text.