US 12,376,950 B2
Brush head, toothbrush, analysis system and method for the operation thereof
Christoph Schäfer, Engelberg (CH); Fabio Cirillo, Ormalingen (CH); Christian Jäggi, Biel-Benken (CH); Stefan Schaffner, Münchenstein (CH); Stefan Stübinger, Binningen (CH); and Saso Jezernik, Regensdorf (CH)
Assigned to BIOINITIALS GmbH, Biel-Benken (CH)
Appl. No. 17/760,534
Filed by BIOINITIALS GMBH, Bl (CH)
PCT Filed Sep. 15, 2020, PCT No. PCT/EP2020/075780
§ 371(c)(1), (2) Date Mar. 15, 2022,
PCT Pub. No. WO2021/052970, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 20 2019 105 110.8 (DE), filed on Sep. 16, 2019.
Prior Publication US 2022/0354628 A1, Nov. 10, 2022
Int. Cl. A61C 19/04 (2006.01); A61C 17/22 (2006.01)
CPC A61C 19/04 (2013.01) [A61C 17/221 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A brush head of a toothbrush, the brush head comprising:
a plurality of bristles arranged for cleaning teeth; and
a sensor arrangement comprising a first sensor unit, a second sensor unit, and a third sensor unit, wherein the first sensor unit is non-interchangeably arranged on the brush head and the second sensor unit is interchangeably arranged on the brush head, wherein the second sensor unit is configured to determine pH or temperature of saliva, and wherein the third sensor unit is a biosensor unit arranged in a replaceable manner on or in the brush head,
wherein the first sensor unit is configured to detect a wetting state of the second sensor unit, as well as detect presence of toothpaste and concentration of the saliva in water, by
performing an impedance measurement of the saliva with one or more frequencies or frequency bands.