# US 9,039,654 B2 · Medicine delivery device having detachable pressure sensing unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,654 B2 - Document ID: US9039654B2 - Status: Granted - Kind: B2 - Application number: 14/216,050 - Filed: 2014-03-17 - Published: 2014-10-02 - Granted: 2015-05-26 - Earliest claimed: 2009-08-18 - Assignees: CeQur SA - Applicants: CeQur SA - Inventors: Peter Gravesen; Heiko Arndt; Serguei Chiriaev - Web page: https://patentgrep.com/patent/US9039654B2 ## CPC - A61M 5/14248: {of the skin patch type} - A61M 5/1413: {Modular systems comprising interconnecting elements} - A61M 5/145: using pressurised reservoirs, e.g. by means of pistons - A61M 5/16854: {by monitoring line pressure} - A61M 5/16859: {Evaluation of pressure response, e.g. to an applied pulse} - A61M 5/5086: {for indicating if defective, used, tampered with or unsterile} - A61M 5/16863: {Occlusion detection} - A61M 5/16886: {for measuring fluid flow rate, i.e. flowmeters} - A61M 2005/14252: {with needle insertion means} - A61M 2005/14264: {with means for compensating influence from the environment} - A61M 2005/14268: {with a reusable and a disposable component} - A61M 2205/0244: Micromachined materials, e.g. made from silicon wafers, microelectromechanical systems [MEMS] or comprising nanotechnology - A61M 2205/3331: Pressure; Flow - A61M 2205/3334: Measuring or controlling the flow rate - A61M 2205/3344: Measuring or controlling pressure at the body treatment site - A61M 2205/3358: Measuring barometric pressure, e.g. for compensation - A61M 2205/581: by audible feedback - A61M 2205/582: by tactile feedback - A61M 2205/583: by visual feedback - A61M 2205/70: with testing or calibration facilities - 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 fluid medicament delivery device includes a patient attachment unit and a separate indicator unit. The patient attachment unit includes a housing and a fluid channel located therein, wherein at least a portion of the fluid channel includes a flexible member substantially coterminous with the housing. The separate indicator unit is adapted to be detachably coupled to the housing of the patient attachment unit and includes a first sensing element for contacting the flexible member when the indicator unit is coupled to the housing to sense a flexure of the flexible member. ## Claims ### Claim 1 A fluid medicament delivery device comprising: a patient attachment unit comprising a housing and a fluid channel located therein, wherein at least a portion of the fluid channel comprises a flexible member; and a separate indicator unit adapted to be detachably coupled to the housing of the patient attachment unit, the indicator unit comprising a first sensing element adapted to detect pressure in the fluid channel via pressure transmitted through at least one of a fluid and a gel due to deflection of the flexible member, wherein the indicator unit is adapted to monitor and not control fluid flow through the patient attachment unit. ### Claim 2 (depends on 1) The fluid medicament delivery device of claim 1, wherein the patient attachment unit further comprises an adhesive adapted for adhesion to a skin surface of a patient. ### Claim 3 (depends on 1) The fluid medicament delivery device of claim 1, wherein the housing comprises a reservoir adapted to be pressurized when filled with fluid. ### Claim 4 (depends on 1) The fluid medicament delivery device of claim 1, wherein the flexible member comprises a sensor membrane. ### Claim 5 (depends on 4) The fluid medicament delivery device of claim 4, wherein the sensor membrane and a meniscus of the gel are aligned when the indicator unit is coupled to the patient attachment unit. ### Claim 6 (depends on 5) The fluid medicament delivery device of claim 5, wherein the sensor membrane and the meniscus of the gel are in direct contact. ### Claim 7 (depends on 5) The fluid medicament delivery device of claim 5, wherein the meniscus of the gel is exposed when the indicator unit is uncoupled from the patient attachment unit. ### Claim 8 (depends on 1) The fluid medicament delivery device of claim 1, wherein the first sensing element comprises a pressure sensor. ### Claim 9 (depends on 1) The fluid medicament delivery device of claim 1, wherein the separate indicator unit defines a well for containing at least one of the fluid and the gel. ### Claim 10 (depends on 9) The fluid medicament delivery device of claim 9, wherein the indicator unit comprises a raised lip surrounding the well. ### Claim 11 (depends on 10) The fluid medicament delivery device of claim 10, wherein the raised lip is adapted to contact the housing of the patient attachment unit. ### Claim 12 (depends on 1) The fluid medicament delivery device of claim 1, wherein the patient attachment unit and the indicator unit define an ambient air channel when coupled. ### Claim 13 (depends on 1) The fluid medicament delivery device of claim 1 further comprising a second sensing element. ### Claim 14 (depends on 13) The fluid medicament delivery device of claim 13, wherein the second sensing element is disposed in the indicator unit. ### Claim 15 (depends on 13) The fluid medicament delivery device of claim 13, wherein the second sensing element comprises a pressure sensor adapted to sense ambient air pressure. ### Claim 16 (depends on 1) The fluid medicament delivery device of claim 1 further comprising a processor adapted for interpreting a signal from the first sensing element. ### Claim 17 (depends on 16) The fluid medicament delivery device of claim 16, wherein the processor is disposed in the indicator unit. ### Claim 18 A method of monitoring pressure within a fluid channel of a patient attachment unit of a fluid medicament delivery device, the method comprising: measuring a pressure of fluid within the fluid channel across a flexible member of the fluid channel using a first sensing element disposed in a separate indicator unit; wherein the pressure of fluid within the channel is transmitted to the first sensing element in the indicator unit via at least one of a fluid and a gel; wherein the indicator unit is adapted to be detachably coupled to the patient attachment unit; and wherein the indicator unit is adapted to monitor and not control fluid flow through the patient attachment unit. ### Claim 19 (depends on 18) The method of claim 18, wherein the flexible member comprises a sensor membrane. ### Claim 20 (depends on 19) The method of claim 19, wherein the sensor membrane and a meniscus of the gel are aligned when the indicator unit is coupled to the patient attachment unit. ### Claim 21 (depends on 20) The method of claim 20, wherein the sensor membrane and the meniscus of the gel are in direct contact. ### Claim 22 (depends on 18) The method of claim 18, wherein the first sensing element comprises a pressure sensor. ### Claim 23 (depends on 18) The method of claim 18, wherein the separate indicator unit defines a well for containing at least one of the fluid and the gel. ### Claim 24 A method of using a fluid medicament delivery device, the method including the steps of: providing a patient attachment unit comprising a housing and a fluid channel located therein, wherein at least a portion of the fluid channel comprises a flexible member; providing a separate indicator unit comprising a sensing element adapted to detect pressure in the fluid channel via pressure transmitted through at least one of a fluid and a gel, wherein the indicator unit is adapted to monitor and not control fluid flow through the patient attachment unit; and detachably coupling the indicator unit to the patient attachment unit. ### Claim 25 (depends on 24) The method of claim 24, wherein the patient attachment unit is adapted to be disposable. ### Claim 26 (depends on 24) The method of claim 24, wherein the indicator unit is adapted to be reusable.