Injection system having a pressure isolation mechanism and/or a handheld controller

An injection system for injecting an injection fluid into a patient, the system comprising:

• a pressurizing device for supplying injection fluid under pressure;
• a low pressure fluid delivery system;
• and
• a pressure isolation mechanism having a first port adapted for connection to the pressurizing device, a second port adapted for connection to the patient, and a third port adapted for connection to the low pressure fluid delivery system, the pressure isolation mechanism comprising a valve having a first state and a mutually exclusive second state, the first state occurring when the second and third ports are connected and the first and third ports are connected, and the second state occurring when the first and second ports are connected and the first and third ports are disconnected, the valve being normally biased to the first state and being switchable to the second state when fluid pressure from the pressurizing device reaches a predetermined pressure level, the first and second ports being connected in both the first and second states of the valve;
• wherein the low pressure fluid delivery system comprises a source of flushing fluid, a drip chamber in fluid connection with the source of flushing fluid and a detector to sense the amount of flushing fluid in the source of flushing fluid.

An injection system for injecting an injection fluid into a patient, the system comprising:

• a powered injector;
• a pressurizing chamber in operative connection with the powered injector;
• a fluid path in fluid connection with the pressurizing chamber and a source of injection fluid for supplying to the pressurizing chamber;
• a handheld controller comprising a first control having a tirst mode wherein flow rate of the injection fluid is directly proportional to the distance the first control is depressed, and a second mode wherein depression of the first control causes the powered injector to deliver a preprogrammed injection of injection fiuid;
• and
• an automated valve associated with the fluid path and adapted to stop flow of injection fluid at any pressure and flow rate when no force is applied to the first control to deliver a sharp bolus of injection fluid.

An injection system for injecting an injection fluid into a patient the system comprising:

• a pressurizing device for supplying injection fluid under pressure;
• a low pressure fluid delivery system:
• a pressure isolation mechanism having a first port adapted for connection to the pressurizing device, a second port adapted for connection to the patient, and a third port adapted for connection to the low pressure fluid delivery system, the pressure isolation mechanism comprising a valve having a first state and a mutually exclusive second state, the first state occurring when the second and third ports are connected and the first and third ports are connected, and the second state occurring when the first and second ports are connected and the first and third ports are disconnected, the valve being normally biased to the first state and being switchable to the second state when fluid pressure from the pressurizing device reaches a predetermined pressure level, the first and second ports being connected in both the first and second states of the valve;
• and
• a pressure transducer in fluid connection with the third port of the pressure isolation mechanism.

An injection system, comprising:

• a source of flushing fluid;
• a pump in operative connection with the source of flushing fluid;
• a flushing fluid valve in operative connection via a first port thereof with an outlet of the pump;
• a first connector in fluid connection with a second port of the flushing fluid valve;
• a source of contrast;
• a contrast valve in operative connection with the source of contrast via a first port of the contrast valve;
• a powered injector in operative connection with a second port of the contrast valve;
• a second connector in operative connection with a third port of the contrast valve;
• a pressure isolation mechanism having a lumen including a first port in fluid connection with the second connector and a second port in fluid connection with a patient catheter, the pressure isolation mechanism also having a third port in fluid connection with the lumen and with the first connector, the pressure isolation mechanism comprising a valve having a first state and a second state, the first state occurring when the lumen and the third port are connected, the second state occurring when the lumen and the third port are disconnected, the first port and the second port of the lumen being connected in the first state and in the second state, the valve being normally biased to the first state and being switchable to the second state when fluid pressure in the lumen from the powered injector reaches a predetermined pressure level;
• and
• a pressure transducer in fluid connection with the third port of the pressure isolation mechanism.