# US 10,481,024 B2 · Pressure sensor assembly including a cured elastomeric force transmitting member

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- Number: US 10,481,024 B2
- Document ID: US10481024B2
- Status: Granted
- Kind: B2
- Application number: 15/492,874
- Filed: 2017-04-20
- Published: 2018-10-25
- Granted: 2019-11-19
- Earliest claimed: 2017-04-20
- Assignees: Honeywell International Inc.
- Applicants: Honeywell International Inc.
- Inventors: Richard Wade; Brian Speldrich; Richard C. Sorenson
- Web page: https://patentgrep.com/patent/US10481024B2

## CPC

- G01L 9/0048: {Details about the mounting of the diaphragm to its support or about the diaphragm edges, e.g. notches, round shapes for stress relief}
- A61M 5/14244: {adapted to be carried by the patient, e.g. portable on the body}
- A61M 5/1452: {pressurised by means of pistons}
- A61M 5/16831: {Monitoring, detecting, signalling or eliminating infusion flow anomalies (low-level float-valves causing cut-off A61M5/40; indicating or recording presence, absence or direction of flow in general G01P13/0066)}
- G01L 19/0069: {from the sensor to its support}
- G01L 19/0654: {against moisture or humidity}
- A61M 5/16863: {Occlusion detection}
- A61M 2205/3331: Pressure; Flow
- G01L: MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE (weighing G01G)
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

Embodiments relate generally to a sensor device, method, and system are provided for housing a sensor. A pressure sensor assembly having a printed circuit board (PCB) with a pressure sensor and a ring mounted on the PCB. The pressure sensor assembly may include a force transmitting member positioned at least partially within the ring. The force transmitting member may transfer a force applied to a front side of the force transmitting member to a front side of the pressure sensor. A reservoir includes an extension that define an opening. The first side of the force transmitting member is exposed to the interior of the reservoir. The extension engages the first side of the force transmitting member to seal the opening.

## Claims

### Claim 1

A pressure sensor assembly comprising:
a printed circuit board having a front side and a back side;
a pressure sensor having a front side and a back side, the pressure sensor mounted to the printed circuit board with the back side of the pressure sensor facing the front side of the printed circuit board;
a ring having a front side and a back side, wherein the ring is mounted to the printed circuit board with the back side of the ring facing the front side of the printed circuit board and the front side of the ring spaced away from the front side of the printed circuit board, the ring extending circumferentially around the pressure sensor and defining an opening from the front side of the ring to the pressure sensor;
a force transmitting member positioned at least partially within the opening of the ring, the force transmitting member having a front side and a back side, wherein the front side of the force transmitting member includes a biocompatible cured silicone elastomer and the back side of the force transmitting member engages the front side of the pressure sensor, wherein the force transmitting member transmits a force applied to the front side of the force transmitting member to the front side of the pressure sensor;
a reservoir includes one or more extensions that define an opening,
wherein the first side of the force transmitting member is exposed to the interior of the reservoir, and
wherein the one or more extensions are configured to engage the first side of the force transmitting member to seal the opening.

### Claim 2 (depends on 1)

The pressure sensor assembly of claim 1, wherein the pressure sensor includes a pressure sense die.

### Claim 3 (depends on 1)

The pressure sensor assembly of claim 1, wherein the pressure sensor includes a pressure sense die secured to a constraint.

### Claim 4 (depends on 1)

The pressure sensor assembly of claim 1, wherein the ring has a circular cross-section.

### Claim 5 (depends on 1)

The pressure sensor assembly of claim 1, wherein the biocompatible cured silicone elastomer extends beyond the front side of the ring.

### Claim 6 (depends on 1)

The pressure sensor assembly of claim 1, wherein the force transmitting member comprises a first layer and a second layer, wherein the first layer includes a gel that engages the front side of the pressure sensor, and the second layer includes the biocompatible cured silicone elastomer that forms the front side of the force transmitting member.

### Claim 7 (depends on 6)

The pressure sensor assembly of claim 6, wherein the gel includes a fluoro-silicone gel.

### Claim 8 (depends on 1)

The pressure sensor assembly of claim 1, wherein the front side of the force transmitting member forms a dome that extends away from the pressure sensor.

### Claim 9 (depends on 1)

The pressure sensor assembly of claim 1, wherein the biocompatible cured silicone elastomer extends from the front side of the force transmitting member to the back side of the force transmitting member.

### Claim 10 (depends on 1)

The pressure sensor assembly of claim 1, further comprising one or more wire bonds connecting one or more bond pads of the pressure sensor with one or more bond pads of the printed circuit board, wherein the ring extends circumferentially around the pressure sensor and the one or more wire bonds.

### Claim 11 (depends on 10)

The pressure sensor assembly of claim 10, wherein the force transmitting member comprises a material that is cured within the ring and over the pressure sensor and the one or more wire bonds.

### Claim 12

A pressure sensor assembly comprising:
a printed circuit board having a front side and a back side;
a pressure sensor having a front side and a back side, the pressure sensor mounted to the printed circuit board with the back side of the pressure sensor facing the front side of the printed circuit board; and
a force transmitting member having a front side and the back side, wherein the front side of the force transmitting member includes a cured elastomeric force transmitting member, and the back side of the force transmitting member engages the front side of the pressure sensor, and
wherein the force transmitting member transmits a force applied to the front side of the force transmitting member to the front side of the pressure sensor; and
a reservoir includes one or more extensions that define an opening,
wherein the first side of the force transmitting member is exposed to the interior of the reservoir, and
wherein the one or more extensions are configured to engage the first side of the force transmitting member to seal the opening.

### Claim 13 (depends on 12)

The pressure sensor assembly of claim 12, wherein the front side of the force transmitting member forms a dome.

### Claim 14 (depends on 12)

The pressure sensor assembly of claim 12, wherein the force transmitting member is configured to engage a reservoir and seal an opening in the reservoir.

### Claim 15 (depends on 12)

The pressure sensor assembly of claim 12, further comprising a ring extending circumferentially around the pressure sensor and defining an opening from a front side of the ring to the pressure sensor, wherein at least part of the force transmitting member is positioned within the opening of the ring.

### Claim 16 (depends on 12)

The pressure sensor assembly of claim 12, wherein the cured elastomeric force transmitting member is a biocompatible cured silicone elastomer.

### Claim 17 (depends on 12)

The pressure sensor assembly of claim 12, wherein the pressure sensor includes a pressure sense die.

### Claim 18 (depends on 12)

The pressure sensor assembly of claim 12, wherein the force transmitting member comprises a first layer and a second layer, wherein the first layer includes a gel that engages the front side of the pressure sensor, and the second layer includes the cured elastomeric force transmitting member that forms the front side of the force transmitting member.

### Claim 19 (depends on 18)

The pressure sensor assembly of claim 18, wherein the gel includes a fluoro-silicone gel.

### Claim 20 (depends on 12)

The pressure sensor assembly of claim 12, further comprising one or more wire bonds connecting one or more bond pads of the pressure sensor with one or more bond pads of the printed circuit board.
