Pressure sensor seal and method of use
First Claim
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1. A pressure sensor system comprising:
- a sensor for determining pressure;
a movable transfer rod disposed in communication with the sensor for applying force to the sensor, the transfer rod having a first end and a second end; and
a flexible membrane connected to the transfer rod between the first end and the second end;
wherein the pump is configured for pumping fluid through tubing, the pump having a pump body and wherein the pressure sensor system is attached to a pump body, the pump body having wall defining an opening and wherein the transfer rod is disposed in the opening and the flexible membrane is configured to form a seal in the opening between the transfer rod and the wall.
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Abstract
A pressure sensor and method of use provides for the detection of a sudden increase or decrease of pressure within tubing during the administration of solutions to a patient. Detection of an occlusion, partial or other significant pressure change in the tubing is accomplished by measuring the compression and/or expansion of the tubing. Transfer of the change in force within the tubing is communicated from the tubing to a sensor by a transfer rod which as a membrane attached thereto to provide a seal thereabout.
178 Citations
23 Claims
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1. A pressure sensor system comprising:
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a sensor for determining pressure; a movable transfer rod disposed in communication with the sensor for applying force to the sensor, the transfer rod having a first end and a second end; and a flexible membrane connected to the transfer rod between the first end and the second end; wherein the pump is configured for pumping fluid through tubing, the pump having a pump body and wherein the pressure sensor system is attached to a pump body, the pump body having wall defining an opening and wherein the transfer rod is disposed in the opening and the flexible membrane is configured to form a seal in the opening between the transfer rod and the wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An infusion pump comprising:
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a pump body, the pump body having a mounting plate for selectively receiving tubing of an infusion set; and a pressure sensor system comprising a sensor, a transfer rod for conveying pressure from a position adjacent the mounting plate to the sensor, and a flexible membrane attached to mounting plate and the transfer rod to form a seal around the transfer rod. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method of manufacturing a pressure sensor system, the method comprising the steps of:
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selecting a transfer rod having a first end and a second end; selecting a pump having an inner surface and an outer surface; connecting the transfer rod to the pump with a flexible membrane so as to form a contamination barrier between the inner and outer surfaces of the pump, the membrane attaching to the transfer rod between the first end and the second end; and wherein the first end of the transfer rod is oriented to directly contact tubing of an infusion set, and wherein the second end of the transfer rod is disposed adjacent a pressure sensor. - View Dependent Claims (20, 21, 22, 23)
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Specification