Catheter with retractable cannula for delivery of chemicals

Details Catheter with retractable cannula for delivery of chemicals Catheter with retractable cannula for delivery of chemicals

A - Human Necessities

61

M

A61M 25/00 (2006.01)

Patent

CA 2137153

2137153 9325263 PCTABS00028 Catheter (11) with a retractable cannula for delivering a plurality of chemicals comprising a flexible elongate member (13) having a centrally disposed lumen (17) and a plurality of circumferentially spaced apart lumens (18-25). An actuator member (31) is slidably mounted in the centrally disposed lumen (17). Springs (56-57) are disposed within the centrally disposed lumen (17) and engage the actuator member (31) for moving the actuator member between extended and retracted positions. A tool (36) having a distal extremity is carried by the actuator member (31) and has a flow passage (38) therein extending through the distal extremity of the tool (36). First and second fittings (48-49) are secured to the proximal extremity of the flexible elongate member (13) in communication with the lumens (18-25) in the flexible elongate element (13). The distal extremity of the flexible elongate member (13) is capable of supplying fluid from said passage lumens (18-25) to the flow passage (38) in the tool (36) when the tool (36) has been advanced to an extended position.

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