# US 10,869,633 B2 · Pressure-sensing guide wire with sliding pressure sensor

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- Number: US 10,869,633 B2
- Document ID: US10869633B2
- Status: Granted
- Kind: B2
- Application number: 15/937,802
- Filed: 2018-03-27
- Published: 2018-08-02
- Granted: 2020-12-22
- Earliest claimed: 2012-12-27
- Assignees: Philips Image Guided Therapy Corporation
- Applicants: Philips Image Guided Therapy Corporation
- Inventors: David H. Burkett
- Web page: https://patentgrep.com/patent/US10869633B2

## CPC

- A61B 5/6847: {mounted on an invasive device}
- A61B 5/02: Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
- A61B 5/0215: by means inserted into the body
- A61B 8/12: in body cavities or body tracts, e.g. by using catheters
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

An intravascular sensor assembly including a flexible elongate member having a longitudinal axis (LA) is provided. The sensor assembly includes a first engagement feature proximal to a distal end of the flexible elongate member; a core member disposed inside a lumen of the flexible elongate member, the core member configured to translate within the flexible elongate member along the LA proximal to the first engagement feature; and a component holding a sensor circuit, the component fixedly secured to a distal end of the core member such that the mounting structure translates along the LA of the flexible elongate member with the core member. A system and a method for performing measurements using a sensor as above are also provided.

## Claims

### Claim 1

An intravascular sensor assembly comprising:
a flexible elongate member having a longitudinal axis (LA);
a first engagement feature proximal to a distal end of the flexible elongate member, wherein the first engagement feature comprises a projection;
a core member disposed inside a lumen of the flexible elongate member, the core member configured to translate within the flexible elongate member along the LA proximal to the first engagement feature; and
a component holding a sensor circuit, the component fixedly secured to a distal end of the core member such that the component translates along the LA of the flexible elongate member with the core member, wherein the component comprises a recess at a distal end, the recess configured to mate with the projection.

### Claim 2 (depends on 1)

The intravascular sensor assembly of claim 1 further comprising a second engagement feature proximal to the first engagement feature, wherein:
the component holding the sensor circuit is configured to be positioned at any point between the second engagement feature and the first engagement feature.

### Claim 3 (depends on 1)

The intravascular sensor assembly of claim 1 wherein the flexible elongate member comprises a plurality of openings spaced along the LA, proximal to the first engagement feature.

### Claim 4 (depends on 1)

The intravascular sensor assembly of claim 1 wherein the flexible elongate member comprises a hypotube and at least one flexible element fixedly coupled to a distal portion of the hypotube.

### Claim 5 (depends on 1)

The intravascular sensor assembly of claim 1 wherein the core member is configured to rotate along the LA.

### Claim 6 (depends on 1)

The intravascular sensor assembly of claim 1 wherein the flexible elongate member comprises a polyimide tubing.

### Claim 7 (depends on 3)

The intravascular sensor assembly of claim 3 wherein the core member comprises a tubing having alignment marks corresponding to the plurality of openings.

### Claim 8 (depends on 7)

The intravascular sensor assembly of claim 7 wherein the alignment marks are formed at a proximal end of the core member.