CN-122005965-A - Sensor positioning and optical sensing for wound therapy dressings and systems implementing sensors

CN122005965ACN 122005965 ACN122005965 ACN 122005965ACN-122005965-A

Abstract

In some embodiments, a wound monitoring and/or treatment apparatus may include a wound dressing configured to be positioned over a wound. The wound dressing may support one or more sensors. The one or more sensors may include an optical sensor array cluster, which may include an optical sensor and a single light source. In some embodiments, the wound dressing may include a substantially stretchable wound contact layer including a wound facing side and a non-wound facing side opposite the wound facing side, the wound facing side configured to be positioned in contact with a wound. The non-wound facing side of the wound contact layer may support a plurality of electronic components and a plurality of electronic connections connecting at least some of the plurality of electronic components. The electronic component may include one or more sensors configured to obtain measurements of the wound or the wound circumference or both.

Inventors

Alan Kenneth Fraser Grogan Hunt
MARCUS DAMIAN PHILLIPS

Assignees

史密夫及内修公开有限公司

Dates

Publication Date: 20260512
Application Date: 20180924
Priority Date: 20171115

Claims (13)

1. A wound dressing, comprising: a substantially flexible substrate covered by a conformal coating; a plurality of optical sensor arrays supported by the substantially flexible substrate and configured to measure characteristics of a wound, the optical sensor arrays comprising: an optical sensor configured to detect light components of at least two colors, the optical sensor being covered by a substantially non-stretchable coating, and A white Light Emitting Diode (LED) separated from the optical sensor by no more than 10 millimeters and covered by the substantially non-telescoping coating; Wherein the number of conductive tracks is reduced with a white LED compared to with a color light emitting diode; wherein the use of white LEDs reduces the size and reduces the likelihood of stress on the wound compared to the use of color LEDs; Wherein covering the optical sensor and the white LED with a substantially non-stretchable coating prevents localized stresses from forming on the optical sensor and the white LED, Wherein the plurality of optical sensor arrays are located at a plurality of locations of the wound dressing to allow optical measurements to be made between two or more of the plurality of optical sensor arrays.
2. The wound dressing of claim 1, the white Light Emitting Diode (LED) being separated from the optical sensor by about 2.5 millimeters.
3. The wound dressing of any one of claims 1-2, wherein a center of the white Light Emitting Diode (LED) is located about 2.5 millimeters from a center of the optical sensor.
4. The wound dressing of any one of claims 1-2, wherein the white Light Emitting Diode (LED) is oriented perpendicular to an orientation of the optical sensor.
5. The optical sensor of any of claims 1-2, wherein the white Light Emitting Diode (LED) is oriented at a 90 degree angle relative to an orientation of the optical sensor.
6. The wound dressing of any one of claims 1-2, wherein the white Light Emitting Diode (LED) is oriented parallel to an orientation of the optical sensor.
7. A wound monitoring and/or therapy system comprising the wound dressing of any one of claims 1-6, and a controller configured to connect to the wound dressing and further configured to receive optical measurement data from the wound dressing.
8. A wound monitoring and treatment system comprising: A controller configured to be connected to a wound dressing and further configured to receive optical measurement data from the wound dressing, and The wound dressing supports one or more sensors configured to obtain optical measurement data of at least one of a wound or a wound circumference, wherein each of the one or more sensors comprises: a substantially flexible substrate covered by a conformal coating; a plurality of optical sensor arrays supported by the substantially flexible substrate and configured to measure characteristics of a wound, the optical sensor arrays comprising: an optical sensor configured to detect light components of at least two colors, the optical sensor being covered by a substantially non-stretchable coating, and A white Light Emitting Diode (LED) separated from the optical sensor by no more than 10 millimeters and covered by the substantially non-telescoping coating; Wherein the number of conductive tracks is reduced with a white LED compared to with a color light emitting diode; wherein the use of white LEDs reduces the size and reduces the likelihood of stress on the wound compared to the use of color LEDs; Wherein covering the optical sensor and the white LED with a substantially non-stretchable coating prevents localized stresses from forming on the optical sensor and the white LED, Wherein the plurality of optical sensor arrays are located at a plurality of locations of the wound dressing to allow optical measurements to be made between two or more of the plurality of optical sensor arrays.
9. The system of claim 8, wherein the wound dressing further supports an antenna configured to transmit optical measurement data to at least one of the controller or communication device.
10. The system of any of claims 8-9, the white Light Emitting Diode (LED) separated from the optical sensor by about 2.5 millimeters.
11. The system of any of claims 8-9, wherein a center of the white Light Emitting Diode (LED) is located about 2.5 millimeters from a center of the optical sensor.
12. The system of any of claims 8-9, wherein the white Light Emitting Diode (LED) is oriented perpendicular to an orientation of the optical sensor.
13. The system of any of claims 8-9, wherein the white Light Emitting Diode (LED) is oriented at a 90 degree angle relative to an orientation of the optical sensor.

Description

Sensor positioning and optical sensing for wound therapy dressings and systems implementing sensors The present application is a divisional application of application number 201880061075.7, 24, 9, and entitled "sensor positioning and optical sensing for wound therapy dressings and systems for implementing sensors". Cross Reference to Related Applications The present application claims priority from U.S. provisional patent application No. 62/563252, entitled "OPTICAL SENSING FOR SENSOR ENABLED WOUND THERAPY DRESSINGS AND SYSTEMS", filed on 9, 26, 2017, and from uk patent application No. 1718859.0, entitled "SENSOR POSITIONING FOR SENSOR ENABLED WOUND DRESSINGS AND SYSTEMS", filed on 11, 2107, both of which are incorporated herein by reference in their entirety. Technical Field Embodiments of the present disclosure relate to devices, systems, and methods for treating tissue through monitoring of an implement sensor in communication with various treatment areas. Background Almost all medical fields can benefit from improved information about the state of the tissue, organ or system to be treated, especially if such information is collected in real time during the treatment. Many types of processing are routinely performed without the use of sensor data acquisition, rather such processing relies on visual inspection or other limited means by the caregiver rather than quantifying the sensor data. For example, in the case of wound treatment by dressing and/or negative pressure wound therapy, data acquisition is often limited to visual inspection by the caregiver, and often the injured tissue underneath may be obscured by bandages or other visual obstructions. Even intact skin may have underlying lesions that are not visible to the naked eye, such as damaged blood vessels or deeper tissue lesions that may lead to ulcers. Similar to wound treatment, during orthopedic treatment, a model or other packaging is required to immobilize the limb, collecting only limited information on the underlying tissue. In the case of internal tissue (e.g., bone plate) repair, continuous direct sensor-driven data acquisition is not performed. Furthermore, the brace and/or sleeve used to support musculoskeletal functions does not monitor the underlying muscle function or limb movement. In addition to direct treatment, common hospital ward items, such as beds and blankets, may be improved by increasing the ability to monitor patient parameters. Accordingly, there is a need for improved sensor monitoring, particularly through the use of substrates that can be incorporated into existing processing schemes to implement sensors. Disclosure of Invention Some embodiments of the present disclosure provide improved wound dressings. The wound dressing may include a substantially flexible wound contact layer supporting one or more sensors configured to measure characteristics of the wound. The one or more sensors may include an optical sensor array sensor or cluster including an optical sensor and one or more light sources. The wound dressing of the preceding paragraph may also include any combination of the following features described in this paragraph, as well as other features described herein. The one or more light sources may consist of one light source. The one or more light sources may include a plurality of light sources. The optical sensor may include a Red Green Blue (RGB) sensor, a red green blue transparent (RGBC) sensor, or a Red Green Blue White (RGBW) sensor. The light source may include a red Light Emitting Diode (LED), a green LED, a blue LED, or a white LED. The wound dressing of any of the preceding paragraphs may also include any combination of the following features described in this paragraph, as well as other features described herein. The light source may be separated from the optical sensor by 2.5 millimeters or about 2.5 millimeters. The center of the light source may be separated from the center of the optical sensor by 2.5 millimeters or about 2.5 millimeters. The light source may be oriented 90 degrees relative to the orientation of the optical sensor. The light source may be oriented perpendicular to the orientation of the optical sensor. The light source may be oriented parallel to the orientation of the optical sensor. The light source may comprise a plurality of light sources. The optical sensor may comprise a plurality of optical sensors. A method of using the wound dressing of the present paragraph or the preceding paragraph may be provided. Some embodiments provide an improved wound monitoring and/or treatment system. The wound monitoring and treatment system may include a controller configured to connect to a wound dressing and further configured to receive optical measurement data from the wound dressing. The wound monitoring and treatment system may include the wound dressing. The wound dressing may include or may support one or more sensors configured to obtain optical measurement data of at least one of t