Miniature pressure sensor assembly for catheter
First Claim
1. A system comprising:
- a MLCC package comprising a cavity, at least one internal bond pad, at least one external connection point, and at least one internal interconnect wherein the at least one internal bond pad is positioned within the cavity, wherein the at least one external connection point is on the MLCC package exterior, and wherein the at least one internal interconnect provides an electrical connection between at least one of the at least one internal bond pad and at least one of the at least one external connection point;
a sensor attached within the cavity and electrically connected to the at least one internal bond pad to form an MLCC sensor assembly; and
a catheter comprising at least one lumen wherein at least one of the at least one lumen is a sensor lumen and wherein the MLCC sensor assembly is positioned within the sensor lumen.
1 Assignment
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Accused Products
Abstract
A catheter with a lumen containing a MLCC sensor assembly provides many advantages. The MLCC package can have a reference hole linking to a channel that is buried or on bottom layer of the package to provide venting or a reference input to a pressure sensor. A channel passing completely through the assembly can provide a path for reference air to a second sensor positioned further into the catheter. An ultraminiature assembly is designed to be capable of fitting inside a 6 French catheter with two lumen. One lumen is used for the sensor assembly, wires and reference pressure while a second can be used for other purposes such as a fluid fill lumen in Urology. The MLCC package allows forming connections to standard miniature pressure die using standard automated techniques such as wire bonding. Larger external connections on the MLCC package allow ease of connection to catheter wires or to micro-ribbon cables.
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Citations
20 Claims
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1. A system comprising:
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a MLCC package comprising a cavity, at least one internal bond pad, at least one external connection point, and at least one internal interconnect wherein the at least one internal bond pad is positioned within the cavity, wherein the at least one external connection point is on the MLCC package exterior, and wherein the at least one internal interconnect provides an electrical connection between at least one of the at least one internal bond pad and at least one of the at least one external connection point; a sensor attached within the cavity and electrically connected to the at least one internal bond pad to form an MLCC sensor assembly; and a catheter comprising at least one lumen wherein at least one of the at least one lumen is a sensor lumen and wherein the MLCC sensor assembly is positioned within the sensor lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system comprising:
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a pressure sensor; a MLCC package comprising a cavity, at least one internal bond pad, at least one external connection point, and at least one internal interconnect wherein the at least one internal bond pad is positioned within the cavity, wherein the at least one external connection point is on the MLCC package exterior, wherein the at least one internal interconnect provides an electrical connection between at least one of the at least one internal bond pad and at least one of the at least one external connection point, and wherein the pressure sensor is attached within the cavity and electrically connected to the at least one internal bond pad; a sealant within the cavity and encapsulating the pressure sensor to produce an MLCC sensor assembly; and a catheter comprising at least one lumen wherein at least one of the at least one lumen is a sensor lumen and wherein the MLCC sensor assembly is positioned within the sensor lumen. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. a method comprising:
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producing a MLCC package comprising a cavity, at least one internal bond pad, at least one external connection point, and at least one internal interconnect wherein the at least one internal bond pad is positioned within the cavity, wherein the at least one external connection point is on the MLCC package exterior, and wherein the at least one internal interconnect provides an electrical connection between at least one of the at least one internal bond pad and at least one of the at least one external connection point; attaching a sensor within the cavity and electrically connecting the sensor to the at least one internal bond pad; encapsulating the sensor within the cavity to produce an MLCC sensor assembly; and positioning the MLCC sensor assembly within a catheter lumen. - View Dependent Claims (17, 18, 19, 20)
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Specification