Measuring device for determining cerebral parameters

• US 10,022,089 B2
• Filed: 11/01/2013
• Issued: 07/17/2018
• Est. Priority Date: 11/06/2012
• Status: Active Grant

• Current Assignee: NeMoDevices AG
• Original Assignee: Luciole Medical AG
• Inventors: Lechot, Christophe, Frely, Jean-Claude, Aeschlimann, Marcel, Froehlich, Juerg Hans, Baumann, Dirk, Muser, Markus Hugo, Oberle, Michael
• Primary Examiner(s): Winakur, Eric
• Assistant Examiner(s): Liu, Chu Chuan (JJ)
• Application Number:
  US14/437,712
• Publication Number:
  US 20150282762A1
• Time in Patent Office: 1,719 Days
• CPC Class Codes: A61B 2560/0412 Low-profile patch shaped housings
• CPC Class Codes: A61B 2560/0443 Modular apparatus
• CPC Class Codes: A61B 2562/0238 Optical sensor arrangements for performing transmission measurements on body tissue
• CPC Class Codes: A61B 2562/164 the sensor is mounted in or on a conformable substrate or carrier
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/14553 specially adapted for cerebral tissue
• CPC Class Codes: A61B 5/6833 Adhesive patches

Abstract

The invention relates to a device and a method for noninvasive measurement of parameters of a bodily tissue, the measuring device having a sensor unit and a sensor mat for detachable placement of the device on a body surface. The sensor unit (1) has a receptacle (6), the interior of which accommodates a sensor arrangement, wherein the receptacle (6) has a sensor surface (15) in the direction of the body surface. The sensor mat (8) has a cutout (11) for accommodating the sensor unit (1) and a contact surface (14), at least partially surrounding the sensor unit (1), for placement on the body surface (9). A cover (12) is provided for closing the cutout (11) over an upper side of the sensor unit (1) and the sensor mat (8) during a measurement of parameters. The sensor unit (1), the sensor mat (8) and the cover (12) are detachable from one another.

Claims

1. Measuring device for non-invasive measurement of parameters of a bodily tissue, said measuring device comprising

a sensor unit (1);

and

a sensor pad (8) for detachable placement of the measuring device on a body surface,

wherein;

the sensor unit (1) has a receptacle (6), the interior space of which accommodates a sensor arrangement, the receptacle (6) having a measuring surface (15) in the direction of the body surface,

the sensor pad (8) has an inner cutout (11) for accommodating the sensor unit (1) and a lower contact surface (14), at least partially surrounding the sensor unit (1), for placement on the body surface (9),

the measuring surface (15) and the lower contact surface (14) lie in a single plane,

the cutout (11) forms a passage through the sensor pad (8),

a covering (12) is provided for closing the cutout (11) over an upper side of the sensor unit (1) and the sensor pad (8) during a measurement of parameters, and

the sensor unit (1), the sensor pad (8) and the covering (12) are detachable from one another.

2. Measuring device according to claim 1, wherein the surface of the covering (12) corresponds substantially to the size of the upper side of the sensor pad (8).

3. Measuring device according to claim 1, wherein a transparent adhesive layer (13) is provided over a lower side of sensor unit (1) and sensor pad (8) for fixing the measuring device to a body surface (9).

4. Measuring device according to claim 1, wherein the receptacle (6) is at least partially open toward the upper side and is closed with a lightproof closing cover (7).

5. Measuring device according to claim 4, wherein the closing cover (7) is formed by a sealing which seals the sensor arrangement in the interior space of the receptacle (6).

6. Measuring device according to claim 1, wherein the receptacle (6) abuts on an inner side of the covering (12) and an inner side of the adhesive layer (13).

7. Measuring device according to claim 1, wherein the contact surface (14) of the sensor pad (8) in the area in which it surrounds the sensor unit (1) is at least 5 mm wide.

8. Measuring device according to claim 1, wherein the sensor pad (8), the receptacle (6) and the covering are designed at least partially flexible.

9. Measuring device according to claim 1, wherein the sensor pad (8) has on its outer periphery a plurality of indentations and/or thin places.

10. Measuring device according to claim 1, wherein the shape of the cutout (11) matches the outer contour of the sensor unit (1) in a form-fitting fashion.

11. Measuring device according to claim 1, wherein the sensor unit (1) is provided as reusable unit, whereas the sensor pad (8) and the covering (12) are provided as disposable articles.

12. Measuring device according to claim 1, wherein a control unit is provided which registers a background lighting in direction of the body surface (9) between laser pulses of laser light sources of the sensor arrangement.

13. Measuring device according to claim 1, wherein it is provided as a kit with a plurality of elements to be put together, the sensor unit (1) being provided as reusable element, and sensor pad (8) and covering (12) being supplied in a packaging and being provided as disposable articles.

14. Method of preparing a measuring device for non-invasive measurement of parameters of a bodily tissue, said method comprising the steps of:

inserting a sensor unit (1) having a measuring surface (15) into an inner cutout (11) of a sensor pad (8) having a lower contact surface (14), whereby the cutout (11) forms a passage through the sensor pad (8), and whereby the measuring surface (15) and the lower contact surface (14) lie in a single plane;

attaching an adhesive layer at least to the lower side of the sensor pad (8);

fixing the unit of sensor pad (8) and sensor unit (1) to the body surface (9) with the adhesive layer; and

covering the cutout (11) by putting a covering (12) on an upper side of the sensor pad (8) subsequent to the attachment of the unit of sensor pad (8) and sensor unit (1) to the body surface (9).

15. Method according to claim 14, wherein at least one of a steady or a constant pressure is generated between sensor unit (1) and body surface (9) by the covering (12).

16. Method according to claim 14, wherein, after removal of the covering (12), the sensor unit (1) is taken out of the sensor pad (8) while the sensor pad (8) remains attached to the body surface (9) and then another sensor unit (1) is inserted into the sensor pad (8) remaining on the body surface (9) and the cutout (11) is closed with a further covering (12).

17. Method according to claim 14, wherein, after a carrying out of a parameter measurement the sensor unit (1) is removed from the sensor pad (8), the sensor pad (8) is disposed of or is cleaned and the sensor unit (1) with another sensor pad (8) and a further covering (12) is made available for another parameter measurement.