# US 12,011,566 B2 · External-magnetically controlled access to implanted fluid pathway > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,011,566 B2 - Document ID: US12011566B2 - Status: Granted - Kind: B2 - Application number: 16/803,216 - Filed: 2020-02-27 - Published: 2021-09-02 - Granted: 2024-06-18 - Earliest claimed: 2020-02-27 - Assignees: Medtronic, Inc. - Applicants: Medtronic, Inc. - Inventors: Michael E. Winek - Web page: https://patentgrep.com/patent/US12011566B2 ## CPC - A61M 5/14276: {specially adapted for implantation} - A61M 5/16881: {Regulating valves} - A61M 39/0208: {Subcutaneous access sites (implantable infusion devices A61M5/14276; transcutaneous access sites A61M39/0247)} - A61M 39/06: Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof - A61M 39/24: Check- or non-return valves - A61M 2005/14208: {with a programmable infusion control system, characterised by the infusion program} - A61M 2039/0238: {having means for locating the implanted device to insure proper injection, e.g. radio-emitter, protuberances, radio-opaque markers} - A61M 2039/0646: {Duckbill-valve} - A61M 2039/0666: {Flap-valve} - A61M 2039/248: {Ball-valve} - A61M 2205/3331: Pressure; Flow - A61M 2205/3515: using magnetic means - A61M 2205/3523: using telemetric means - A61M 2205/52: with memories providing a history of measured variating parameters of apparatus or patient - A61M 2205/581: by audible feedback - A61M 2205/582: by tactile feedback - A61M 2205/583: by visual feedback - 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 An implantable medical pump system configured to selectively permit access to a medicament reservoir by way of at least one contactless key, including an implantable medical pump having an medicament reservoir fluidly couple to an access port via a conduit including an access valve, and at least one contactless key configured to impart a magnetic field upon a portion of the implantable medical pump to manipulate the access valve between a closed position isolating the medicament reservoir from the access port, and an open position fluidly coupling the medicament reservoir to the access port. ## Claims ### Claim 1 An implantable medical system configured to selectively permit access to a medicament reservoir by way of at least one contactless key, the implantable medical pump system comprising: an implantable medical device including a medicament reservoir fluidly coupled to an access port via a conduit including an access valve configured to selectively isolate the medicament reservoir from the access port; and at least one programmable coded contactless key, formed with multiple magnetic elements that provide at least one coded magnetic key pattern to manipulate or otherwise configure the access valve between a closed position isolating the medicament reservoir from the access port, and an open position fluidly coupling the medicament reservoir to the access port. ### Claim 2 (depends on 1) The implantable medical system of claim 1, wherein the access valve is configured to shift from the closed position to the open position. ### Claim 3 (depends on 2) The implantable medical system of claim 2, wherein the access valve is biased to the closed position in the absence of a magnetic field imparted by the at least one contactless key. ### Claim 4 (depends on 1) The implantable medical system of claim 1, wherein the access valve includes at least one of a magnetic element or ferritic portion configured to be manipulated by the at least one contactless key, thereby enabling the at least one contactless key to directly manipulate the access valve between the closed position and the open position. ### Claim 5 (depends on 1) The implantable medical system of claim 1, wherein the access valve is at least one of a flapper valve, ball valve, reed valve, duckbill valve, rotary valve, or poppet valve. ### Claim 6 (depends on 1) The implantable medical system of claim 1, further comprising a magnetic sensing element configured to sense a magnetic field imparted by the at least one contactless key for manipulation of the access valve. ### Claim 7 (depends on 6) The implantable medical system of claim 6, wherein the magnetic sensing element is at least one of a reed switch, magnetic field sensor, micro-electromechanical systems (MEMS) device, Hall effect sensor, magneto diode, magneto transistor, AMR magnetometer, GMR magnetometer, MTJ magnetometer, magnetooptical device, MEMS (Lorenz force), MEMS electron tunneling, or MEMS compass. ### Claim 8 (depends on 6) The implantable medical system of claim 6, wherein the implantable medical device is configured to provide at least one of a visual, auditory or vibratory feedback response upon proper positioning of the at least one contactless key relative to the access valve as determined by the magnetic sensing element. ### Claim 9 (depends on 1) The implantable medical system of claim 1, wherein the at least one contactless key is at least one of a standalone key or incorporated into an implantable medical system template of a refill kit. ### Claim 10 (depends on 1) The implantable medical pump system of claim 1, wherein the implantable medical system is configured to log a date and time of a sensed presence of a magnetic field of the at least one contactless key. ### Claim 11 An implantable medical system configured to perform a desired function in the presence of a contactless key, the implantable medical system comprising: an implantable medical device having a magnetic sensing element and processor configured to sense the presence of a magnetic field and to perform one or more preprogrammed functions in response to the sensed magnetic field; and at least one programmable coded contactless key, formed with multiple magnetic elements to impart at least one coded magnetic key pattern upon a magnetic valve in a portion of the implantable medical pump, thereby manipulating or otherwise configuring the magnetic valve between a closed position and an open position. ### Claim 12 (depends on 11) The implantable medical system of claim 11, wherein the one or more preprogrammed functions include at least one of initiating a bolus delivery of medicament, temporarily pausing medicament delivery, or entering an MRI safe mode. ### Claim 13 (depends on 11) The implantable medical system of claim 11, wherein the one or more preprogrammed functions include shifting an access valve located between a medicament reservoir and a medicament reservoir access port from a closed position to an open position. ### Claim 14 (depends on 11) The implantable medical system of claim 11, wherein the processor is configured to initiate at least one of an auditory or vibratory feedback response upon proper positioning of the at least one contactless key relative to the magnetic valve as determined by the magnetic sensing element. ### Claim 15 (depends on 11) The implantable medical system of claim 11, wherein the magnetic sensing element is at least one of a reed switch, magnetic field sensor, micro-electromechanical systems (MEMS) device, Hall effect sensor, magneto diode, magneto transistor, AMR magnetometer, GMR magnetometer, MTJ magnetometer, magnetooptical device, MEMS (Lorenz force), MEMS electron tunneling, or MEMS compass. ### Claim 16 (depends on 11) The implantable medical system of claim 11, wherein the processor is configured to log a date and time of a sensed presence of a magnetic field of the at least one contactless key. ### Claim 17 (depends on 11) The implantable medical system of claim 11, wherein the at least one contactless key includes two or more maxels. ### Claim 18 (depends on 11) The implantable medical system of claim 11, wherein the at least one contactless key is at least one of a standalone key or incorporated into an implantable medical device template of a refill kit. ### Claim 19 A method of selectively permitting access to a medicament reservoir of an implanted medical pump by way of at least one contactless key, the method comprising: positioning at least one programmable coded contactless key, formed with multiple magnetic elements, in proximity to an implanted medical pump, the implanted medical pump including a medicament reservoir fluidly coupled to an access port via a conduit including an access valve configured to selectively isolate the medicament reservoir from the access port, the multiple magnetic elements positioned to generate at least one coded magnetic key pattern to manipulate or otherwise configure the access valve from a closed position isolating the medicament reservoir from the access port to an open position fluidly coupling the medicament reservoir to the access port. ### Claim 20 A method of selectively permitting access to a fluid pathway of an implanted medical port by way of at least one contactless key, the method comprising: positioning at least one programmable coded contactless key, formed with multiple magnetic elements, in proximity to an implanted medical port, the implanted medical port including a fluid pathway fluidly coupled to an access port via a conduit including an access valve configured to selectively isolate the fluid pathway from the access port, the multiple magnetic elements positioned to generate at least one magnetic key code to manipulate or otherwise configure the access valve to shift from a closed position isolating the fluid pathway from the access port to an open position fluidly coupling the fluid pathway to the access port. ### Claim 21 A method comprising: sensing at least one programmable coded contactless key, formed with multiple magnetic elements positioned to generate a magnetic field as at least one magnetic key code, in proximity to an access valve in an implanted medical pump, the implanted medical pump including a medicament reservoir fluidly coupled to an access port via one or more conduits including the access valve configured to selectively isolate the medicament reservoir from the access port; and determining, by a computer processor and from a magnetic field that is based at least in part on the contactless key, a magnetic key code; wherein in response to determining that the magnetic key code authorizes access to an access port of the implanted medical pump, configuring, by the computer processor, the access valve to shift from a closed position isolating the medicament reservoir from the access port to an open position fluidly coupling the medicament reservoir to the access port. ### Claim 22 An implantable medical port system configured to selectively permit access to a fluid pathway by way of at least one contactless key, the implantable medical port system comprising: an implantable medical port including a fluid pathway fluidly coupled to an access port via a conduit including an access valve configured to selectively isolate the fluid pathway from the access port; and at least one programmable coded contactless key formed with multiple magnetic elements positioned to generate at least one magnetic key code to manipulate or otherwise configure the access valve between a closed position isolating the fluid pathway from the access port, and an open position fluidly coupling the fluid pathway to the access port.