High pressure sensor for use with a fluid delivery system
First 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, andwherein 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.
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Accused Products
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.
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Citations
20 Claims
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1. A fluid path set for a fluid delivery system, the fluid path set comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A fluid delivery system, comprising:
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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. - View Dependent Claims (17, 18, 19, 20)
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Specification