A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 25/10 (2006.01) G01D 9/00 (2006.01)
Patent
CA 2055490
An electronically controlled syringe sys- tem (14) for connection to a balloon catheter (10) or other balloon-type member and for auto- matically monitoring, displaying and recording inflation data when the syringe system (14) is used to inflate the balloon catheter (10) or other balloon-type member. A syringe (16) having a barrel (22) and a syringe plunger (24) is selec- tively operable to increase fluid pressure appli- ed to the balloon catheter (10) or other balloon member by sliding the plunger (24) further into the barrel (22). Positive pressure applied to the balloon catheter (10) or member can be released by withdrawing the syringe plunger (24) toward the rear of the barrel (22). A piezoresistive semi- conductor transducer (18) housed on the barrel (22) of the syringe (16) senses positive fluid pressure applied by the syringe (16). The elec- tric signal output by the transducer (18) is input to a controller (20) where the signal is digitally processed so as to derive and record therefrom electronic data representing the magnitude of applied fluid pressure, and so as also to derive the length of time that positive fluid pressure is applied and the elec- tronic data representing this information is automatically displayed and recorded. The controller (20) is also programmable to permit optional selection and input of various control parameters, such as a maximum positive inflation pressure that is to be ap- plied, maximum duration for applying positive inflation pressure, initialization of the date and time of an inflation procedure and/or retrieving and displaying inflation data previously recorded for any prior inflation of the balloon catheter (10) or other balloon member.
Foote Jerrold L.
Gill Darla R.
Lampropolous Fred P.
Cassan Maclean
Merit Medical Systems Inc.
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