Bodily fluid space entry detection

Details Bodily fluid space entry detection Bodily fluid space entry detection

A - Human Necessities

61

M

A61M 5/32 (2006.01)

Patent

CA 2589257

A bodily fluid space entry detection system (10) includes electrical contacts (36, 38) in non-conducting relationship and associated with a needle cannula (20). Entry of the distal, sharp tip (26) of the cannula (20) into a bodily fluid space (28) such as a blood vessel or epidural space allows bodily fluid (40) such as blood or spinal fluid to make a conduction path (40') between the contacts (36, 38) which, in turn, causes an alert source (42) to be energized to indicate entry into the bodily fluid space (28). The alert source (42) could be an LED (42a) and/or a buzzer (42b).

L~invention a trait à un système de détection d~intrusion dans un espace de fluide anatomique (10) comprenant des contacts électriques (36, 38) sans conduction réciproque et associés à une canule à aiguille (20). L~intrusion de l~extrémité distale pointue (26) de la canule (20) dans un espace de fluide anatomique (28) tel qu~un vaisseau sanguin ou l~espace péridural permet au fluide anatomique (40) tel que le sang ou le fluide rachidien de constituer un canal conducteur (40')entre les contacts (36, 38), lequel, à son tour, provoque l~activation d~une source d~alerte (42) indiquant l~intrusion dans l~espace de fluide anatomique (28). La source d~alerte (42) pourrait être une diode électroluminescente (42a) et/ou un signal acoustique (42b).

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