Fluid delivery system including a high crack pressure valve and methods for its use

Patent metadata

Field	Value
Publication number	US-12011568-B2
Application number	US-202117372673-A
Country	US
Kind code	B2
Filing date	Jul 12, 2021
Priority date	Mar 15, 2013
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

A high crack pressure valve is described. The high crack pressure valve includes an inlet adapted to receive a medical fluid pressurized by a pump; an outlet in fluid communication with a fluid path element, wherein the fluid path element is in fluid communication with downstream system components of a fluid delivery system; and a moveable element having a crack pressure threshold. The moveable element has a first closed position and a second open position and is configured to move from the first closed position to the second open position when a fluid pressure at the inlet is greater than or equal to the crack pressure threshold. The pressure of fluid at the outlet of the high crack pressure valve has little or no effect on movement of the moveable element from the first closed position to the second open position. Fluid injector systems and fluid path elements which include the high crack pressure valve are also described.

First claim

What is claimed is:

1. A fluid delivery system for controlled delivery of a fluid to a recipient, the fluid delivery system comprising:
a fluid delivery unit for pressurizing and enabling delivery of the fluid to the recipient, the fluid being acquired from a source of the fluid via a source outlet;
a high crack pressure valve having an inlet, an outlet and a moveable element directly acted upon by fluid pressure in the inlet and the outlet, the inlet being adapted to receive the fluid pressurized by the fluid delivery unit and the moveable element being adapted to transmit to the outlet the fluid received from the inlet when the fluid at the inlet reaches a pressure at least equal to a crack pressure threshold of the high crack pressure valve; and
a fluid path element for receiving the fluid from the outlet of the high crack pressure valve and conveying the fluid to any remaining system components for delivery to the recipient,
wherein the fluid pressure in the outlet of the high crack pressure valve has little or no effect on movement of the moveable element, and
wherein the movable element is further acted upon by restraining forces from an external pressure and a force actuator which restrain movement of the movable element in response to fluid pressure at the inlet.

2. The fluid delivery system of claim 1 , further comprising a control unit to control delivery of the fluid wherein the control unit controls at least one of the fluid delivery unit and the high crack pressure valve.

3. The fluid delivery system of claim 2 , wherein the control unit controls the movable element of the high crack pressure valve.

4. The fluid delivery system of claim 1 , wherein the high crack pressure valve is a spool type high pressure crack valve and the force actuator is selected from a spring and a pressurized bladder.

5. A high crack pressure valve comprising:
an inlet adapted to receive a medical fluid pressurized by a pump;
an outlet in fluid communication with a fluid path element, wherein the fluid path element is in fluid communication with downstream system components of a fluid delivery system; and
a moveable element directly acted upon by fluid pressure in the inlet and the outlet, the movable element having a crack pressure threshold, wherein the moveable element has a first closed position and a second open position, wherein the moveable element moves from the first closed position to the second open position when the fluid pressure of the medical fluid at the inlet is greater than or equal to the crack pressure threshold and wherein the inlet is in fluid communication with the outlet when the moveable element is in the second open position, and
wherein the fluid pressure in the outlet of the high crack pressure valve has little or no effect on movement of the moveable element from the first closed position to the second open position, and
wherein the movable element is further acted upon by restraining forces from an external pressure and a force actuator which restrain movement of the movable element in response to fluid pressure at the inlet.

6. The high crack pressure valve of claim 5 , wherein the fluid pressure of the medical fluid at the inlet moves the moveable element between the first closed position and the second open position to maintain a pressure within the fluid delivery system at the crack pressure threshold.

7. The high crack pressure valve of claim 5 , further comprising at least one sealing surface, and wherein the force actuator is selected from the group consisting of a passive force actuator, a manually adjustable force actuator, and a controllable force actuator.

8. The high crack pressure valve of claim 7 , wherein the force actuator is a passive force actuator selected from a spring and a bladder.

9. The high crack pressure valve of claim 7 , wherein the force actuator is a manually adjustable force actuator comprising a screw compressing a spring, wherein the screw controls a force of compression of the spring.

10. The high crack pressure valve of claim 7 , wherein the force actuator is a controllable force actuator controlled by a controller, wherein the controllable force actuator is a solenoid driven spring compression, a hydraulic driven spring compression, a pneumatic driven spring compression, or a motor driven spring compression.

11. The high crack pressure valve of claim 7 , wherein the high crack pressure valve is a spool type high crack pressure valve and wherein the moveable element comprises an internal sliding element adapted to block fluid flow.

12. The high crack pressure valve of claim 11 , wherein the force actuator is configured to resist movement of the internal sliding element.

13. A fluid path comprising:
a fluid inlet tubing element;
a fluid outlet tubing element; and
a high crack pressure valve having an inlet in fluid communication with the fluid inlet tubing element, an outlet in fluid communication with the fluid outlet tubing element, and a moveable element directly acted upon by fluid pressure in the inlet and the outlet, the movable element having a crack pressure threshold, wherein the moveable element has a first closed position and a second open position, wherein the moveable element moves from the first closed position to the second open position when the fluid pressure of a medical fluid at the inlet is greater than or equal to the crack pressure threshold, and wherein the inlet is in fluid communication with the outlet when the moveable element is in the second open position,
wherein the fluid pressure in the outlet of the high crack pressure valve has little or no effect on movement of the moveable element from the first closed position to the second open position, and
wherein the movable element is further acted upon by restraining forces from an external pressure and a force actuator which restrain movement of the movable element in response to fluid pressure at the inlet.

14. The fluid path of claim 13 , wherein the fluid pressure of the medical fluid at the inlet moves the moveable element between the first closed position and the second open position to maintain a pressure within the fluid path at the crack pressure threshold.

Assignees

• Bayer Healthcare Llc

Inventors

• Uber Iii Arthur
• Trocki Mark

Classifications

• A61N5/1002

  Intraluminal radiation therapy · CPC title

• A61M2039/242

  designed to open when a predetermined pressure or flow rate has been reached, e.g. check valve actuated by fluid · CPC title

• A61M5/007

  for contrast media · CPC title

• A61M5/16881

  Regulating valves (on-off valves, e.g. clamps A61M39/28) · CPC title

• A61M5/16827

  controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths (infusion of multiple fluids without using a controller A61M5/1407) · CPC title