Controller for intravascular catheter system
First Claim
1. An intravascular catheter system comprising:
- a catheter member having an elongated flexible jacket, a rotatable tip attached to a flexible rotatable shaft, said catheter member further having a quick-disconnect means, said quick disconnect means having a male portion removably connected to a female portion to facilitate the replacement of said flexible rotatable shaft with a guidewire;
a fluid path through a central passageway within said catheter member for permitting fluid flow towards said rotatable tip; and
common means for injecting fluid into said fluid path and thereafter rotating said shaft, said common means monitoring both said rotatable shaft and said fluid flow and disabling both the rotation of said shaft and said fluid flow upon detecting an error with respect to either the rotation of said shaft or said fluid flow.
3 Assignments
0 Petitions
Accused Products
Abstract
An intravascular catheter system has a catheter with a rotating tip and a fluid path to permit fluid to be ejected around the tip for cooling the tip. The system has an electric motor for rotating the catheter tip and a second motor for con trolling the fluid flow. A control circuit sets the speed of the two motors and also monitors the speed and other parameters for operational errors. If an error is detected for either motor, the entire system, including both motors, is automatically shut down. The control circuit utilizes two processors, a main processor for system control and speed control of both motors and a slave processor for monitoring the speed of the catheter motor. The main processor provides data regarding desired speed to the catheter motor and to the slave processor and the slave processor provides signals the main processor when it detects a speed error.
-
Citations
15 Claims
-
1. An intravascular catheter system comprising:
-
a catheter member having an elongated flexible jacket, a rotatable tip attached to a flexible rotatable shaft, said catheter member further having a quick-disconnect means, said quick disconnect means having a male portion removably connected to a female portion to facilitate the replacement of said flexible rotatable shaft with a guidewire; a fluid path through a central passageway within said catheter member for permitting fluid flow towards said rotatable tip; and common means for injecting fluid into said fluid path and thereafter rotating said shaft, said common means monitoring both said rotatable shaft and said fluid flow and disabling both the rotation of said shaft and said fluid flow upon detecting an error with respect to either the rotation of said shaft or said fluid flow. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method for controlling an intravascular catheter system having a catheter member having an elongated flexible jacket, a rotatable tip attached to a flexible rotatable shaft, said catheter member further having a quick-disconnect means, said quick disconnect means having a male portion removably connected to a female portion to facilitate the replacement of said flexible rotatable shaft with a guidewire, and a fluid path within said catheter member for permitting fluid flow towards said rotatable tip, said method comprising the steps of:
-
injecting fluid into said fluid path; rotating said shaft after said fluid is injected into said fluid path; monitoring both said rotatable shaft and said fluid flow; and disabling both the rotation of said rotatable shaft and said fluid flow upon detecting an error with respect to either the rotation of said rotatable shaft or said fluid flow. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
-
Specification