Injection and monitoring system

A system for injecting fluid into a patient and monitoring the blood pressure of the patient comprising:

• injector means carrying the fluid to be injected, said injector defining a fluid outlet therefrom and including expelling means for alternatively and successively discharging fluid for injection out of said fluid outlet for a first prescribed period of time and stopping the discharge of fluid out of said fluid outlet for a second prescribed period of time, display means, and rate indicator means operatively associated with said expelling means for generating an output indicative of the rate of fluid injection connected to said display means for visually displaying the rate at which the fluid is being injected;
• delivery tube means connected to said fluid outlet and adapted to be connected to the vascular system of the patient so that the fluid discharged from said fluid outlet will be injected into the vascular system of the patient;
• a blood pressure monitor including transducer means having an inlet connected to said delivery tube means between said fluid outlet on said injector means and the patient so that said transducer means is in communication both with the vascular system of the patient through said delivery tube means and with said fluid outlet from said injector means for providing an output indicative of the pressure in said delivery tube means, said monitor further including pressure detector means responsive to the output of said transducer means to generate outputs indicative of the maximum and minimum pressures within said delivery tube means over a prescribed period of time;
• and
• mounting means for selectively and removably mounting said blood pressure monitor on said injector means, said mounting means including connector means constructed and arranged so that, as an incident to the mounting of said monitor on said injector means, said connector means operatively connects the output of said pressure detector means in said blood pressure monitor to said display means in said injector means whereby said display means in said injector means automatically visually displays the output of said pressure detector means which is indicative of the maximum and minimum pressures in said delivery tube means so that, while the discharge of fluid from said fluid outlet in said injector means is stopped, the pressures in said delivery tube means and displayed on said display means is the patient's systolic and diastolic blood pressure.