Pressure transducer assembly
First Claim
1. A pressure transducer assembly for monitoring pressure in a fluid comprising:
- a housing defining a chamber and having an inlet port and an outlet port in fluid-flow communication with the chamber;
an insulated body sealed within the chamber which forms separate first and second chambers within the housing with the first chamber in fluid-flow communication with the inlet port and outlet port;
a pressure transducer means secured in the insulated body and exposed to the first chamber for determining and converting fluid pressure within a fluid in the first chamber into electrical impulses;
a fluid pressure responsive media covering the pressure transducer means which is electrically non-conductive and which separates the pressure transducer means from any fluid present in the first chamber;
electrical conducting means connected to the pressure transducer means and extending through the insulated body and into the second chamber for providing electrical connection between the pressure transducer means in the first chamber and the second chamber; and
engagement means on the housing for providing a connection locus on the housing for electrical wiring which can be interconnected with the electrical conducting means.
3 Assignments
0 Petitions
Accused Products
Abstract
A pressure transducer assembly is disclosed for directly monitoring pressure in a fluid which flows through the assembly. The assembly includes a housing defining a chamber therewithin and having an inlet port and an outlet port in fluid-flow communication with the chamber. An electrically insulated body element is sealed within the chamber dividing the chamber into a first chamber and a second chamber. The first chamber is in fluid-flow communication with the inlet and outlet ports. The second chamber is separated from the first chamber by a fluid-tight seal such that any fluid present in the first chamber cannot enter the second chamber. A pressure transducer sensor is secured in the insulated body and exposed to the first chamber such that the sensor can determine the pressure in a fluid in the first chamber and convert the pressure into electric impulses. The sensor is separated from the fluid in the first chamber by an insulating medium across which fluid pressure can be determined. Connected to the sensor are electrical conductors which extend through the insulated body and into the second chamber. The second chamber provides an engagement site for an electrical connector which can interconnect with the electrical conductors and provide an electrical path through which the electric impulses generated by the sensor can be transferred to a monitor.
43 Citations
53 Claims
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1. A pressure transducer assembly for monitoring pressure in a fluid comprising:
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a housing defining a chamber and having an inlet port and an outlet port in fluid-flow communication with the chamber; an insulated body sealed within the chamber which forms separate first and second chambers within the housing with the first chamber in fluid-flow communication with the inlet port and outlet port; a pressure transducer means secured in the insulated body and exposed to the first chamber for determining and converting fluid pressure within a fluid in the first chamber into electrical impulses; a fluid pressure responsive media covering the pressure transducer means which is electrically non-conductive and which separates the pressure transducer means from any fluid present in the first chamber; electrical conducting means connected to the pressure transducer means and extending through the insulated body and into the second chamber for providing electrical connection between the pressure transducer means in the first chamber and the second chamber; and engagement means on the housing for providing a connection locus on the housing for electrical wiring which can be interconnected with the electrical conducting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 23)
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21. A disposable pressure transducer assembly for use in the invasive monitoring of blood pressure, the assembly comprising:
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a housing defining a chamber therewithin and having an inlet port and an outlet port in fluid-flow communication with the chamber. an electrically insulated intervening wall in the chamber separating the chamber into a first chamber and a second chamber wherein the first chamber is in fluid-flow communication with the inlet port and outlet port and the second chamber is separated from the first chamber by a fluid-tight seal; a pressure transducer means secured in the first chamber in a depression on the electrically insulated intervening wall, which pressure transducer means is exposed to the first chamber for sensing and converting fluid pressure exhibited by a fluid in the first chamber into electrical impulses; an electrically nonconductive, fluid pressure responsive media covering the pressure transducer means which separates the pressure transducer means from direct contact with fluid present in the first chamber; electrical conducting means connected to the pressure transducer means for transmitting and receiving electrical impulses from the pressure transducer means and which extends through the intervening wall into the second chamber to provide a pathway for electricity between the pressure transducer means in the first chamber and the second chamber; and receptor means on the housing for receiving and connecting the housing to electrical wiring means for powering the pressure transducer means and for transferring electrical impulses generated by the pressure transducer means and corresponding to determined pressures. - View Dependent Claims (22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A disposable pressure transducer assembly for invasively monitoring blood pressure comprising:
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a housing comprised of polysulfone defining a chamber therewithin, having an inlet port and an outlet port in fluid-flow communication with the chamber and having a first aperture opening to the chamber; an electrically insulated intervening wall in the chamber comprised of polysulfone which separates the chamber into a first chamber and a second chamber wherein the first chamber is in fluid-flow communication with the inlet port and outlet port and the second chamber having an opening through the housing and separated from the first chamber by a fluid-tight seal and the first aperture extends into the second chamber and aligns with a second aperture extending through the electrically insulated intervening wall; a pressure transducer means secured in the first chamber in a depression on the electrically insulated intervening wall, which pressure transducer means is exposed to the first chamber for sensing and converting fluid pressure exhibited by a fluid in the first chamber into electrical impulses; an electrically nonconductive fluid pressure responsive media comprising silicone elastomer covering the pressure transducer means which separates the pressure transducer means from direct contact with fluid present in the first chamber; electrical conducting pins connected to the pressure transducer means for transmitting and receiving electrical impulses from the pressure transducer means and which extend through the intervening wall into the second chamber to provide a pathway for electricity between the pressure transducer means in the first chamber and the second chamber; and snap-fitting resilient arms on the housing which combine with the opening through the housing into the second chamber which receives and connects the housing to electrical wiring means for powering the pressure transducer means and for transferring electrical impulses generated by the pressure transducer means and corresponding to determined pressures. - View Dependent Claims (39, 40, 41, 42, 43, 44)
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45. A disposable pressure transducer assembly for invasively monitoring blood pressure comprising:
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a housing comprised of polysulfone with at least a portion of the housing forming a dome and extending over and defining a chamber with the housing, the housing including an inlet port and an outlet port in fluid-flow communication with the chamber and a first aperture opening to the chamber; an electrically insulated intervening wall in the chamber comprised of polysulfone which separates the chamber into a first chamber and a second chamber wherein the first chamber is in fluid-flow communication with the inlet port and outlet port and the second chamber having an opening through the housing and separated from the first chamber by a fluid-tight seal and the first aperture extends into the second chamber and aligns with a second aperture extending through the electrically insulated intervening wall; a pressure transducer means secured in the first chamber in a depression on the electrically insulated intervening wall, which pressure transducer means is exposed to the first chamber for sensing and converting fluid pressure exhibited by a fluid in the first chamber into electrical impulses; an electrically nonconductive fluid pressure responsive media comprising silicone elastomer covering the pressure transducer means which separates the pressure transducer means from direct contact with fluid present in the first chamber. electrical conducting pins connected to the pressure transducer means for transmitting and receiving electrical impulses from the pressure transducer means and which extend through the intervening wall into the second chamber to provide a pathway for electricity between the pressure transducer means in the first chamber and the second chamber; and snap-fitting resilient arms on the housing which combine with the opening through the housing into the second chamber which receives and connects the housing to electrical wiring means for powering the pressure transducer means and for transferring electrical impulses generated by the pressure transducer means and corresponding to determined pressures. - View Dependent Claims (46, 47, 48, 49)
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50. A pressure transducer assembly for monitoring pressure in a fluid comprising;
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a housing defining a chamber and having an inlet port and an outlet port in fluid-flow communication with the chamber; an insulated body sealed within the chamber which forms separate first and second chambers within the housing with the first chamber in fluid-flow communication with the inlet port and outlet port and adapted to be filled with fluid from the inlet port; a pressure transducer means secured on the insulated body and exposed to pressure of fluid in the first chamber for determining and converting fluid pressure within a fluid adapted to be in the first chamber into electrical impulses; temperature compensation means for compensating the sensed pressure in the fluid based upon the temperature of the fluid and correcting such sensed pressure; a fluid pressure responsive media which is electrically nonconductive and which separates the pressure transducer means from any fluid present in the first chamber; and an electrical conductor connected to the pressure transducer means. .Iaddend. .Iadd. - View Dependent Claims (51)
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52. with the opening. .Iaddend. .Iadd.53. A pressure transducer assembly for monitoring pressure in a fluid comprising:
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a housing having an inlet port and an outlet port; means for forming a partition within the housing to provide separate first and second chambers within the housing with the first chamber in fluid-flow communication with the inlet port and outlet port and adapted to be filled with fluid from the inlet port, said housing having a portion through which fluid in the first chamber can be observed; a pressure transducer carried by the partition and exposed to pressure of fluid in the first chamber for determining and converting fluid pressure within a fluid adapted to be in the first chamber into electrical impulses; a fluid pressure responsive media which is electrically nonconductive and which separates the pressure transducer from any fluid present in the first chamber; and an electrical conductor connected to the pressure transducer and extending from the pressure transducer. .Iaddend. .Iadd.54. A pressure transducer assembly for monitoring pressure in a fluid comprising; a biocompatible housing having an inlet port and an outlet port; means for forming a partition within the housing to provide separate first and second chambers within the housing with the first chamber in fluid-flow communication with the inlet port and outlet port, said housing having a portion through which fluid in the first chamber can be observed; said partition having an opening extending between the first and second chambers; a pressure transducer for sensing pressure of the fluid; temperature compensation means for compensating the sensed pressure in the fluid based upon the temperature of the fluid and correcting such sensed pressure; means for mounting the pressure transducer in said housing in communication with said opening whereby the pressure transducer is exposed to pressure of fluid adapted to be in the first chamber for determining and converting fluid pressure within a fluid in the first chamber into electrical impulses; a biocompatible electrically nonconductive fluid pressure responsive media in said opening for separating the pressure transducer from any fluid present in the first chamber; and an electrical conductor connected to the pressure transducer. .Iaddend. .Iadd.55. A pressure transducer as described in claim 54 wherein said partition is a nonconductor of electricity between the first and second chambers. .Iaddend. .Iadd.56. A pressure transducer as described in claim 54 wherein the transducer is aligned with said opening and supported by the partition. .Iaddend. .Iadd.57. A pressure transducer assembly for monitoring pressure in a fluid comprising; a housing having an inlet port and an outlet port; a source of I.V. solution; flexible tubing connected to the source of I.V. solution and to the inlet port; means for coupling the outlet port to the patient; means for forming a partition within the housing to provide separate first and second chambers within the housing with the first chamber in fluid-flow communication with the inlet port and outlet port and adapted to be filled with fluid from the inlet port, said housing having a portion through which fluid in the first chamber can be observed; a pressure transducer carried by the partition and exposed to pressure of fluid in the first chamber for determining and converting fluid pressure within a fluid adapted to be in the first chamber into electrical impulses; a fluid pressure responsive media which is electrically nonconductive and which separates the pressure transducer from any fluid present in the first chamber; and an electrical conductor connected to the pressure transducer and extending
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53. from the pressure transducer. .Iaddend. .Iadd.58. A pressure transducer assembly for monitoring pressure in a fluid comprising:
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a biocompatible housing having an inlet port and an outlet port; means for forming a partition within the housing to provide separate first and second chambers within the housing with the first chamber in fluid-flow communication with the inlet port and outlet port and adapted to be filled with fluid from the inlet port; a pressure transducer carried by the partition and exposed to pressure of fluid in the first chamber for determining and converting fluid pressure within a fluid adapted to be in the first chamber into electrical impulses; a biocompatible fluid pressure responsive media which is electrically nonconductive and which separates the pressure transducer from any fluid present in the first chamber; and an electrical conductor connected to the pressure transducer and extending from the pressure transducer.
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Specification