High pressure sensor for use with a fluid delivery system

Patent metadata

Field	Value
Publication number	US-9808571-B2
Application number	US-201615342434-A
Country	US
Kind code	B2
Filing date	Nov 3, 2016
Priority date	Apr 3, 2012
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A pressure sensor for use with a fluid delivery system having good sensitivity at low pressure, but also configured to remain in operating condition after being exposed to high pressures is disclosed herein. In one variation, the pressure sensor includes a fluid path set, a deformable element associated with the fluid path set and configured to deform in response to an external pressure, and a pressure transducer for monitoring deformation of the deformable element. In certain embodiments, the pressure sensor is configured to measure fluid pressure within the range of between about 0 mm Hg to about 300 mm Hg. However, the sensor pressure is also be configured to remain functional after being exposed to pressure in excess of about 60,000 mm Hg.

First claim

We claim:

1. A fluid path set for a fluid delivery system, the fluid path set comprising:
a manifold comprising at least two fluid control valves in series fluid communication, wherein a first fluid control valve comprises a first port, a second port, and a third port, wherein the second port of the first fluid control valve is in fluid connection with a first port of a second fluid control valve and wherein a second port of the second fluid control valve is in fluid connection with a catheter connector conduit;
a connector for providing fluid connection between a low pressure hand-operated syringe and the first port of the first fluid control valve;
a tubing for providing fluid connection between a high pressure syringe and the third port of the first fluid control valve; and
a pressure sensor in continuous fluid communication with fluid in a tubing portion in the catheter connector conduit and adapted to measure a fluid pressure in the tubing portion, the pressure sensor comprising a deformable element configured to deform in response to a change in the fluid pressure in the tubing portion, and
wherein the pressure sensor converts a representation of the amount of deformation of the deformable element to an electronic signal to measure the change in the fluid pressure in the tubing portion.

2. The fluid path set of claim 1 , wherein the pressure sensor is configured to measure pressure within a range of between about 0 mm Hg to about 300 mm Hg and wherein the pressure sensor is a high pressure sensor configured such that it remains in working condition after being exposed to pressure in excess of about 60,000 mm Hg.

3. The fluid path set of claim 1 , further comprising:
a pressure transducer disposed within the tubing portion of the catheter connector conduit for measuring a hemodynamic signal.

4. The fluid path set of claim 3 , wherein the pressure sensor is connected to an external signal detector or monitor connected with the pressure transducer.

5. The fluid path set of claim 4 , wherein the external signal detector or monitor is in wired or wireless connection with the pressure transducer.

6. The fluid path set of claim 4 , wherein the external signal detector or monitor is configured to process and analyze the hemodynamic signal measured by the pressure transducer.

7. The fluid path set of claim 4 , wherein the external signal detector or monitor collects and relays the hemodynamic signal measured by the pressure transducer to a control unit.

8. The fluid path set of claim 7 , wherein the control unit is configured to display or analyze data recorded by the pressure sensor.

9. The fluid path set of claim 1 , further comprising:
a low pressure hand-operated syringe in fluid connection with the first port of the first fluid control valve.

10. The fluid path set of claim 9 , further comprising:
a high pressure syringe in fluid connection with the third port of the first fluid control valve through the tubing.

11. The fluid path set of claim 1 , further comprising:
a fluid source in fluid connection with a third port of the second fluid control valve.

12. The fluid path set of claim 1 , wherein each of the first and second fluid control valves comprises a multi-position stopcock valve.

13. The fluid path set of claim 1 , wherein the manifold further comprises a manifold housing, and each of the first and second fluid control valves are in friction-fit connection within the manifold housing.

14. The fluid path set of claim 1 , wherein the manifold comprises an L-shaped manifold housing comprising a longitudinal portion and a lateral portion, and wherein the third port of the first fluid control valve is generally coaxial with the lateral portion.

15. The fluid path set of claim 1 , wherein the manifold further comprises a manifold housing, the manifold housing comprising a stop element to prevent rotation of the first fluid control valve to a position that opens a fluid path between the third port and the first port of the first fluid control valve.

16. A fluid delivery system, comprising:
a power injector adapted to interface with and actuate a high pressure syringe;
a low pressure hand-operated syringe;
a manifold comprising at least two fluid control valves in series fluid communication, wherein a first fluid control valve comprises a first port, a second port, and a third port, wherein the second port of the first fluid control valve is in fluid connection with a first port of a second fluid control valve and wherein a second port of the second fluid control valve is in fluid connection with a catheter connector conduit;
a connector providing fluid connection between the low pressure hand-operated syringe and the first port of the first fluid control valve;
a tubing providing fluid connection between the high pressure syringe and the third port of the first fluid control valve; and
a pressure sensor in continuous fluid communication with fluid in a tubing portion in the catheter connector conduit and adapted to measure a fluid pressure in the tubing portion, the pressure sensor comprising a deformable element configured to deform in response to a change in the fluid pressure in the tubing portion, and
wherein the pressure sensor converts a representation of the amount of deformation of the deformable element to an electronic signal to measure the change in the fluid pressure in the tubing portion.

17. The fluid delivery system of claim 16 , wherein the pressure sensor is configured to measure pressure within a range of between about 0 mm Hg to about 300 mm Hg and wherein the pressure sensor is configured such that it remains in working condition after being exposed to pressure in excess of about 60,000 mm Hg.

18. The fluid delivery system of claim 16 , further comprising:
a pressure transducer disposed within the tubing portion of the catheter connector conduit for measuring a hemodynamic signal.

19. The fluid delivery system of claim 18 , wherein the pressure sensor is connected to an external signal detector or monitor connected with the pressure transducer.

20. The fluid delivery system of claim 19 , wherein the external signal detector or monitor is in wired or wireless connection with the pressure transducer and is configured to process and analyze the hemodynamic signals measured by the pressure transducer.

Assignees

• Bayer Healthcare Llc

Inventors

• Riley Michael A
• Callan Gerald W
• Spohn Michael A
• Swantner Michael J

Classifications

• G01L11/025

  using a pressure-sensitive optical fibre · CPC title

• A61M5/007 Primary

  for contrast media · CPC title

• A61M5/1723

  using feedback of body parameters, e.g. blood-sugar, pressure (measurement of body parameters A61B5/00) · CPC title

• A61M2205/3355

  Controlling downstream pump pressure · CPC title

• A61M2230/30

  Blood pressure (A61M2230/04 takes precedence) · CPC title