Fluid Delivery System and Method of Fluid Delivery to a Patient

A fluid delivery system comprising:

• a pressurizing mechanism comprising a substantially cylindrical body having a substantially closed first end;
• a substantially closed second end;
• and a movable member positioned therein that divides the body into a first chamber and a second chamber;
• and
• an actuator connected to a fluid dispensing end of a fluid container, the actuator being switchable between a first state in which fluid is prevented from being delivered and a second state in which the fluid is dispensed,
• wherein the fluid container is operatively coupled to the first end of the pressurizing mechanism, and
• fluid is dispensed from the fluid container by forming a vacuum within at least the first chamber by moving the movable member toward the second end of the body, allowing atmospheric pressure to enter the second chamber, and switching the actuator from the first state to the second state.

A fluid delivery system comprising:

• a first injection device comprising:
• a first syringe configured to hold a first fluid and defining an outlet through which the first fluid can exit therefrom, the first syringe having a plunger slidably disposed therein and being configured to be placed in fluid connection with a patient;
• and
• a first pressurizing mechanism comprising a first vacuum drive in operative connection with the plunger of the first syringe for pressurizing the fluid therein;
• a second injection device comprising:
• a second syringe configured to hold a second fluid and defining an outlet through which the second fluid can exit therefrom, the second syringe having a plunger slidably disposed therein and being configured to be placed in fluid connection with the patient;
• and
• a second pressurizing mechanism comprising a second vacuum drive in operative connection with the plunger of the second syringe for pressurizing the fluid therein;
• a fluid path set extending from the outlet of the first syringe and the outlet of the second syringe to the patient;
• an actuator connected to the outlet of the first syringe and the outlet of the second syringe, the actuator being switchable between a first state in which fluid is prevented from flowing through the outlet of the first syringe and the outlet of the second syringe and a second state in which fluid can flow through the outlet of the first syringe and the outlet of the second syringe;
• and
• a one-way check valve positioned within the fluid path set downstream from the outlet of the second syringe and upstream from the outlet of the first syringe and the patient,
• wherein a diameter of the first syringe is smaller than a diameter of the second syringe such that the first fluid within the first syringe is delivered at a higher pressure than the second fluid in the second syringe and the one-way check valve prevents the first fluid from being delivered to the second syringe.

A fluid delivery system comprising:

• a first injection device comprising:
• a first syringe configured to hold a first fluid and defining an outlet through which the first fluid can exit therefrom, the first syringe having a plunger slidably disposed therein and being configured to be placed in fluid connection with a patient;
• and
• a first pressurizing mechanism comprising a first vacuum drive in operative connection with the plunger of the first syringe for pressurizing the fluid therein;
• a second injection device comprising:
• a second syringe configured to hold a second fluid and defining an outlet through which the second fluid can exit therefrom, the second syringe having a plunger slidably disposed therein and being configured to be placed in fluid connection with the patient;
• and
• a second pressurizing mechanism comprising a second vacuum drive in operative connection with the plunger of the second syringe for pressurizing the fluid therein;
• a fluid path set extending from the outlet of the first syringe and the outlet of the second syringe to the patient;
• an actuator connected to the outlet of the first syringe and the outlet of the second syringe, the actuator being switchable between a first state in which fluid is prevented from flowing through the outlet of the first syringe and the outlet of the second syringe and a second state in which fluid can flow through the outlet of the first syringe and the outlet of the second syringe;
• and
• a first one-way check valve positioned at the outlet of the first syringe and a second one-way check valve positioned at the outlet of the second syringe,
• wherein the second one-way check valve has a crack pressure that is greater than a crack pressure of the first one-way check valve such that, upon switching the actuator, the first fluid within the first syringe is delivered before the second fluid within the second syringe.