Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1996-04-04
1997-10-21
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
Specific condition
340606, 177118, G08B 2100
Patent
active
056801106
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a blood flow monitoring device which can be used for monitoring the delivery of blood from a blood donor.
Accordingly, the invention resides in a blood donation monitoring means comprising; a support platform roackably supported by a support; a drive means supported from the support and operatively connected to the support platform to cause joint pivotal movement of the support platform about two axes; a weight sensing means associated with the support for the support platform; a display adapted to display a value representative of the quantity of blood in the receptacle determined from the output of the weight sensing means; a flow line support adapted to receive a flow line from a receptacle to be supported on the support platform, said flow line support including a flow control means to control the flow through the flow line to the receptacle; a control means operatively connected to the flow control means; said control means being adapted to periodically derive an input from the weight sensing means and monitor the rate of change of weight of the contents of the support platform; said control means being adapted to activate the flow control means to close the flow line on delivery of a predetermined quantity of blood to the receptacle through the flow lines; and wherein the control means is further adapted not to activate the flow control means on detecting a variation in weight sensed by the weighing means which is contrary to expected variations, said control means being adapted to cause the display to display a signal indicative of the presence of an unexpected variation in weight.
According to a preferred feature of the invention the predetermined amount of blood can be varied from collection to collection.
According to a preferred feature of the invention the drive means and control circuit is driven from an electrical power supply comprising a set of electrolytic storage cells associated with a set of photovoltaic cells and a charging circuit.
According to a preferred feature the control means is adapted to periodically activate the drive means and said control means is adapted to measure the weight of the contents of the support platform when the drive means is deactivated and determine the change in weight from the earlier measurement.
According to a preferred feature of the previous feature the display indicates visual and/or audio display indicative of the ratio of the amount of blood collected to the predetermined amount to be collected.
The invention will be more fully understood in the light of the following description of one specific embodiment. The description is made with reference to the accompanying drawings of which: according to the embodiment; embodiment; and
The embodiment is directed towards a device which can be used for the collection of blood and monitoring such collection.
The embodiment comprises a housing 10 having a lower portion 11 which accommodates a support tray 12 and a drive means for causing reciprocation of the tray. The housing further comprises a upper portion 13 which extends upwardly from one side of the base 11 and accommodates an appropriate control switch 14, a display 15, and flow line support 16. Both the lower and upper portion 11 and 13 accommodate the control circuitry for the device.
The upper portion 13 comprises an upstanding wall supported from the rear of the lower portion 11. The top of the wall supports a substantially horizontal portion which accommodates the control circuitry, control switches and display panels. The horizontal portion generally overlies the support tray and has an area similar to the area of the upper face of the lower portion.
The lower portion 11 is essentially cubic in configuration and is provided with an open upper face 17. The support tray 12 is configured such that it is received within the upper face 17 and is supported able to be caused to pivot about two substantially horizontal perpendicular axes in the open face 17. The tray 12 is formed with an upper face which is recessed in a manner su
REFERENCES:
patent: 5010968 (1991-04-01), Barrow
patent: 5371329 (1994-12-01), Fillaud
Hofsass Jeffery
La Anh
Max-Medical Pty Ltd.
LandOfFree
Blood donation monitoring means for monitoring the flow of blood does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Blood donation monitoring means for monitoring the flow of blood, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blood donation monitoring means for monitoring the flow of blood will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1010124