Electromechanical inflation/deflation system
First Claim
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1. An inflation/deflation system, comprising:
- a catheter having an inflatable region at its distal end and an inflation lumen providing a fluid path between a proximal end of said catheter and the interior of said inflatable region;
a fluid chamber having a plunger for pressurizing a quantity of inflation fluid contained in said fluid chamber;
a conduit located between said fluid chamber and said catheter inflation lumen for directing said inflation fluid between said fluid chamber and the interior of said inflation region;
a motor drive unit coupled to the plunger to control the position of the plunger in the fluid chamber in response to control signals to thereby control the inflation fluid pressure between said fluid chamber and the interior of said inflatable region; and
a control switch located near said proximal end of said catheter and remote from but in communication with said drive unit, said control switch adapted to provide control signals to the drive unit to cause the drive unit to control the movement of said plunger and thereby pressurize or depressurize said inflation fluid in said fluid chamber, and having a rapid decrease/pressure button which, when activated, controls the motor drive unit to cause fluid pressure in said inflatable region to rapidly decrease to a predetermined level.
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Abstract
An automated inflation/deflation system for use in connection with a dilatation balloon catheter in vascular procedures that greatly facilitates the operator'"'"'s control of the inflation or deflation of the balloon and control of maneuvering the proximal end of the catheter for proper positioning of the balloon inside the patient'"'"'s vasculature. By use of a pressure transducer and a display unit, the operator can monitor information relating to inflation pressure and inflation time. In addition, the system provides for safety features for effectuating a rapid reduction in balloon pressure.
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Citations
5 Claims
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1. An inflation/deflation system, comprising:
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a catheter having an inflatable region at its distal end and an inflation lumen providing a fluid path between a proximal end of said catheter and the interior of said inflatable region; a fluid chamber having a plunger for pressurizing a quantity of inflation fluid contained in said fluid chamber; a conduit located between said fluid chamber and said catheter inflation lumen for directing said inflation fluid between said fluid chamber and the interior of said inflation region; a motor drive unit coupled to the plunger to control the position of the plunger in the fluid chamber in response to control signals to thereby control the inflation fluid pressure between said fluid chamber and the interior of said inflatable region; and a control switch located near said proximal end of said catheter and remote from but in communication with said drive unit, said control switch adapted to provide control signals to the drive unit to cause the drive unit to control the movement of said plunger and thereby pressurize or depressurize said inflation fluid in said fluid chamber, and having a rapid decrease/pressure button which, when activated, controls the motor drive unit to cause fluid pressure in said inflatable region to rapidly decrease to a predetermined level. - View Dependent Claims (2, 3, 4, 5)
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Specification