# US 12,558,250 B2 · Base plate and a sensor assembly part for an ostomy appliance > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,558,250 B2 - Document ID: US12558250B2 - Status: Granted - Kind: B2 - Application number: 16/262,929 - Filed: 2019-01-31 - Published: 2020-08-06 - Granted: 2026-02-24 - Earliest claimed: 2019-01-31 - Assignees: Coloplast A/S - Applicants: Coloplast A/S - Inventors: Jais Ask Hansen; Niels Hvid; Finn Speiermann; Lars Erup Larsen; Klaus Thoegersen - Web page: https://patentgrep.com/patent/US12558250B2 ## CPC - A61F 5/4404: {Details or parts} - A61F 5/443: having {adhesive seals for securing to the body, e.g. of} hydrocolloid type seals, e.g. gels, starches or karaya gums - G01M 3/16: using electric detection means ({G01M3/045,} G01M3/06, G01M3/12, G01M3/20, G01M3/24, G01M3/26 take precedence) - A61F 5/445: Colostomy, {ileostomy or urethrostomy} devices (A61F5/441, A61F5/442, A61F5/443 take precedence) - A61M 2039/0267: {comprising sensors or electrical contacts} - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract A base plate and/or a sensor assembly part for an ostomy appliance is disclosed, the base plate and/or the sensor assembly part comprising a first adhesive layer with a proximal side configured for attachment of the base plate and/or the sensor assembly part to the skin surface of a user, the first adhesive layer having a stomal opening with a center point; and a plurality of electrodes including a ground electrode, a first electrode, and a second electrode, the ground electrode comprising a ground connection part, the first electrode comprising a first connection part, and the second electrode comprising a second connection part; wherein the ground electrode forms a ground for the first electrode and the second electrode. ## Claims ### Claim 1 A base plate for an ostomy appliance, the base plate comprising: a first adhesive layer with a proximal side configured for attachment of the base plate to the skin surface of a user, the first adhesive layer having a stomal opening with a center point; and a plurality of electrodes arranged between the first adhesive layer and a top layer, the plurality of electrodes including a reference electrode, a first electrode, and a second electrode, the reference electrode comprising a reference connection part, the first electrode comprising a first connection part, and the second electrode comprising a second connection part, wherein: the reference electrode and the first electrode form a first sensing region between the reference electrode and the first electrode; the reference electrode and the second electrode form a second sensing region between the reference electrode and the second electrode that is different than the first sensing region; and the first sensing region is arranged at least partly annularly around the stomal opening at a first radial distance from the center point that is smaller than a second radial distance between the second sensing region and the center point. ### Claim 2 (depends on 1) The base plate according to claim 1, wherein the reference electrode further comprises a first electrode part and a second electrode part, the first electrode part and the first electrode forming the first sensing region and the second electrode part and the second electrode forming the second sensing region. ### Claim 3 (depends on 1) The base plate according to claim 1, wherein the first electrode further comprises a first sensing part, the first sensing part contacting the first adhesive layer and arranged at least partly annularly around the stomal opening. ### Claim 4 (depends on 1) The base plate according to claim 1, wherein the first electrode further comprises a first conductor part insulated from the first adhesive layer by a masking element arranged between the first conductor part and the first adhesive layer. ### Claim 5 (depends on 1) The base plate according to claim 1, wherein the second electrode further comprises a second sensing part, the second sensing part contacting the first adhesive layer and arranged at least partly annularly around the stomal opening. ### Claim 6 (depends on 5) The base plate according to claim 5, wherein the first electrode further comprises a first sensing part, the first sensing part contacting the first adhesive layer and arranged at least partly annularly around the stomal opening, wherein the first sensing part is arranged at a third radial distance from the center point and the second sensing part is arranged at a fourth radial distance from the center point, wherein the fourth radial distance is larger than the third radial distance. ### Claim 7 (depends on 1) The base plate according to claim 1, wherein the second electrode further comprises a second conductor part insulated from the first adhesive layer by a masking element arranged between the second conductor part and the first adhesive layer. ### Claim 8 (depends on 1) The base plate according to claim 1, wherein the first electrode forms an open loop. ### Claim 9 (depends on 1) The base plate according to claim 1, wherein the second electrode forms an open loop. ### Claim 10 (depends on 1) The base plate according to claim 1, wherein: the base plate further comprises a third electrode comprising a third connection part; the reference electrode and the third electrode form a third sensing region between the reference electrode and the third electrode; and the third sensing region is different than the first sensing region and the second sensing region. ### Claim 11 (depends on 10) The base plate according to claim 10, wherein the reference electrode further comprises a third electrode part, the third electrode part and the third electrode forming the third sensing region. ### Claim 12 (depends on 1) The base plate according to claim 1, wherein the base plate further comprises a second adhesive layer, wherein the plurality of electrodes is arranged between the first adhesive layer and the second adhesive layer. ### Claim 13 (depends on 10) The base plate according to claim 10, wherein: the base plate further comprises a fourth electrode comprising a fourth connection part; the reference electrode and the fourth electrode form a fourth sensing region between the reference electrode and the fourth electrode; and the fourth sensing region is different than the first sensing region, the second sensing region, and the third sensing region. ### Claim 14 (depends on 13) The base plate according to claim 13, wherein: the base plate further comprises a fifth electrode comprising a fifth connection part; the reference electrode and the fifth electrode form a fifth sensing region between the reference electrode and the fifth electrode; and the fifth sensing region is different than the first sensing region, the second sensing region, the third sensing region, and the fourth sensing region. ### Claim 15 (depends on 1) The base plate according to claim 1, wherein at least a portion of the reference electrode is radially positioned between the first electrode and the second electrode. ### Claim 16 (depends on 15) The base plate according to claim 15, wherein the portion of the reference electrode cooperates with the first electrode to form the first sensing region. ### Claim 17 (depends on 16) The base plate according to claim 16, wherein the portion of the reference electrode further cooperates with the second electrode to form the second sensing region.