US 12,648,828 B2Granted

Medical interventional device having optical temperature or pressure sensor

AssigneeKoninklijke Philips N.V.

InventorsSusanne Maaike Valster, Ke Wang, Cornelis Petrus Hendriks, Martinus Bernardus Van Der Mark, Emiel Peeters, Gert Wim 't Hooft, Franciscus Johannes Gerardus Hakkens

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Abstract

A medical interventional tool has distal and proximal ends. A responsive material is located at the distal end or elsewhere along the interventional tool and is capable of providing a temperature-dependent or pressure-dependent optical response. At least one optical guide is in optical communication with the responsive material to collect an optical signal from the responsive material located at the distal end or other location along the interventional tool. The at least one optical guide further guides the collected optical signal to an optical output at the proximal end of the interventional tool. An optical response analyzer is configured to receive the collected optical signal from the optical output and to process the collected optical signal to derive therefrom a temperature or pressure reading or indication representative of a temperature or pressure at the distal end or other location along the interventional tool.

Claims20

Dependent claims

A medical device, comprising:

a medical interventional device configured for insertion into an associated subject to be treated;
a temperature sensor comprising a chromatic material capable of providing a temperature dependent optical response, the chromatic material being disposed on or proximal to a distal end of the medical interventional device and arranged to respond to a temperature in the vicinity of at least a part of the medical interventional device;
and
at least one optical guide in optical communication with the chromatic material to collect the optical signal and having an optical output connectable to an optical response analyzer configured to receive the collected optical signal and process the signal to derive therefrom a temperature reading or indication representative of the temperature, wherein the at least one optical guide has a distal end and the chromatic material having a proximal side that is disposed distally of the distal end of the at least one optical guide, the at least one optical guide further comprising:
a first optical fiber configured to deliver light to the chromatic material;
and
a second optical fiber configured to collect reflected light from the chromatic material.

4 more elements

A medical device, comprising:

an interventional tool having a distal end and a proximal end opposite from the distal end;
a chromatic material located on or proximal to the distal end of the interventional tool and capable of providing a temperature dependent or pressure dependent optical response;
at least one optical guide in optical communication with the chromatic material to collect an optical signal from the chromatic material located at the distal end of the interventional tool and guiding the collected optical signal to an optical output at the proximal end of the interventional tool, wherein the at least one optical guide includes a distal end and the chromatic material is disposed at the distal end of the at least one optical guide, the at least one optical guide further comprising:
a first optical fiber configured to deliver light to the chromatic material;
and
a second optical fiber configured to collect reflected light from the chromatic material, the first and second optical fibers each having distal ends disposed proximally to the chromatic material;
and
an optical response analyzer configured to receive the collected optical signal from the optical output and to process the collected optical signal to derive therefrom a temperature or pressure reading or indication representative of a temperature or pressure at the distal end of the interventional tool.

5 more elements

A medical device, comprising:

an interventional tool having a distal end and a proximal end opposite from the distal end;
a chromatic material located on or proximal to the distal end of the interventional tool and capable of providing a pressure dependent optical response;
at least one optical guide in optical communication with the chromatic material to collect an optical signal from the chromatic material located at the distal end of the interventional tool and guiding the collected optical signal to an optical output at the proximal end of the interventional tool, wherein the at least one optical guide includes a distal end and the chromatic material is disposed at the distal end of the at least one optical guide, the at least one optical guide further comprising:
a first optical fiber configured to deliver light to the chromatic material;
and
a second optical fiber configured to collect reflected light from the chromatic material;
and
an optical response analyzer configured to receive the collected optical signal from the optical output and to process the collected optical signal to derive therefrom a pressure reading or indication representative of a pressure at the distal end of the interventional tool.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/668,094Filed 9 Feb 2022 · us provisional application
Priority: 11 Feb 2021
Published: US 2022/0265382 A125 Aug 2022
Granted: 9 Jun 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

A61B 18/24
The beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor: with a catheter
A61B 90/361
Image-producing devices or illumination devices not otherwise provided for: image-producing devices, e.g. surgical cameras
A61B 18/20
By applying electromagnetic radiation, e.g. microwaves: using laser
A61B 2017/00057
Sensing or detecting at the treatment site: light