Fluid injection system for coronary intervention
First Claim
1. An injection apparatus, comprising:
- a control syringe including a manually movable plunger;
a power syringe including a power-actuated plunger;
a processor;
a sensor operatively associated with the control syringe and transmitting a signal representative of control syringe plunger position to the processor, the processor generating a control signal based on the position signal and transmitting the control signal for movement of the power-actuated plunger; and
a feedback device in communication with the power syringe and the control syringe, the feedback device affecting the force required to manually move the plunger of the control syringe, the feedback device including an electromagnet disposed adjacent a fluid line extending from the control syringe, the fluid line being filled with magnetic fluid, the electromagnet receiving the pressure signal and generating an magnetic field, the magnetic field constricting flow of the magnetic fluid within the fluid line based on the pressure signal to provide a user holding the control syringe with tactile feedback.
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Accused Products
Abstract
A fluid injection apparatus and method of injecting fluid are disclosed. The apparatus includes a control syringe electrically connected to a power-actuated syringe. A sensor is provided proximate the control syringe to monitor the position of the plunger therein, with a signal representative of plunger position then being communicated to a processor for calculation of a corresponding control signal. The control signal is received by an actuator of the power-actuated syringe to move the plunger of the power-actuated syringe in a manner related to movement of the control syringe. The control syringe is provided with a feedback device to provide the operator with an indication as to the pressure of the fluid being injected into a patient.
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Citations
13 Claims
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1. An injection apparatus, comprising:
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a control syringe including a manually movable plunger; a power syringe including a power-actuated plunger; a processor; a sensor operatively associated with the control syringe and transmitting a signal representative of control syringe plunger position to the processor, the processor generating a control signal based on the position signal and transmitting the control signal for movement of the power-actuated plunger; and a feedback device in communication with the power syringe and the control syringe, the feedback device affecting the force required to manually move the plunger of the control syringe, the feedback device including an electromagnet disposed adjacent a fluid line extending from the control syringe, the fluid line being filled with magnetic fluid, the electromagnet receiving the pressure signal and generating an magnetic field, the magnetic field constricting flow of the magnetic fluid within the fluid line based on the pressure signal to provide a user holding the control syringe with tactile feedback. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification