Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/02—Access sites
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/02—Access sites
  • A61M39/0208—Subcutaneous access sites for injecting or removing fluids
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/22—Valves or arrangement of valves
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
  • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
  • A61M5/1413—Modular systems comprising interconnecting elements
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
  • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
  • A61M5/142—Pressure infusion, e.g. using pumps
  • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
  • A61M5/14248—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body of the skin patch type
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
  • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
  • A61M5/142—Pressure infusion, e.g. using pumps
  • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
  • A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
  • A61M5/1454—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons spring-actuated, e.g. by a clockwork
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
  • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
  • A61M5/142—Pressure infusion, e.g. using pumps
  • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
  • A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
  • A61M5/1456—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
  • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
  • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
  • A61M5/44—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for cooling or heating the devices or media
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
  • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
  • A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
  • A61M2005/1586—Holding accessories for holding infusion needles on the body
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/02—Access sites
  • A61M2039/0205—Access sites for injecting media
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M2205/00—General characteristics of the apparatus
  • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
  • A61M2205/0266—Shape memory materials
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M2205/00—General characteristics of the apparatus
  • A61M2205/10—General characteristics of the apparatus with powered movement mechanisms
  • A61M2205/103—General characteristics of the apparatus with powered movement mechanisms rotating
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M2205/00—General characteristics of the apparatus
  • A61M2205/10—General characteristics of the apparatus with powered movement mechanisms
  • A61M2205/106—General characteristics of the apparatus with powered movement mechanisms reciprocating
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M2205/00—General characteristics of the apparatus
  • A61M2205/33—Controlling, regulating or measuring
  • A61M2205/3331—Pressure; Flow
  • A61M2205/3334—Measuring or controlling the flow rate
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M2205/00—General characteristics of the apparatus
  • A61M2205/35—Communication
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M2205/00—General characteristics of the apparatus
  • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M2205/00—General characteristics of the apparatus
  • A61M2205/82—Internal energy supply devices
  • A61M2205/8206—Internal energy supply devices battery-operated
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
  • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
  • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
  • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like

Definitions

• Embodiments of the subject matter described herein relate generally to medical devices, such as a wearable infusion port and a pump associated with the wearable infusion port for providing the infusion port with a fluid. More particularly, embodiments of the subject matter relate to systems that provide a wearable infusion port that is coupled to a user to provide an infusion therapy for an extended period of time, and a pump that interfaces with the wearable infusion port to provide the infusion port with the fluid.
• the techniques of this disclosure generally relate to systems that provide a wearable infusion port for infusing a fluid into an anatomy, such as insulin, and a pump associated with the wearable infusion port for supplying the wearable infusion port with a quantity of the infusion fluid.
• FIG. 2 is a perspective view of the wearable infusion port of FIG. 1;
• FIG. 3 is a partially exploded view of the wearable infusion port of FIG. 1;
• FIG. 5B is a rear perspective view of a rotor of the valve assembly of FIG. 5;
• FIG. 13 is a cross-sectional view of the wearable infusion port of FIG. 11, taken along line 13-13 of FIG. 11;
• FIG. 16 is a detail view of the wearable infusion port, taken at 15 on FIG. 13, which illustrates the valve assembly in a closed state;
• FIG. 23 is a partially cross-sectional view of the pump, taken along line 23-23 of FIG. 19, which illustrates the plunger assembly (and the pump) in the first, unlocked position; and [0047] FIG. 24 is a partially cross-sectional view of the pump, taken along line 23-23 of FIG. 19, which illustrates the plunger assembly (and the pump) in the second, locked position.
• the following description relates to various embodiments of systems for wearable infusion ports, and a pump to supply fluid to a wearable infusion port.
• the wearable infusion ports described herein enable a user to receive infusion therapy, such as insulin infusion therapy, over an extended period of time with a single injection site.
• the wearable infusion port enables the user to receive infusion therapy without directly injecting their anatomy with a syringe or insulin pen, for example.
• the pump is configured to interface with the wearable infusion port to supply the wearable infusion port with a quantity of the infusion fluid, such as insulin.
• the pump may also be configured as a patch pump, which may be coupled to the anatomy of a user via an adhesive patch for example.
• the second needle port 134 is defined in the first surface 110a, and enables an insertion device, such as a needle or other device, to couple the cannula assembly 116 to the anatomy.
• the second needle port 134 is in communication with the cannula assembly 116 to enable a portion of the cannula assembly 116 to be coupled to the anatomy.
• the second needle port 134 is defined through the first surface 110a so as to be spaced a distance apart from the first needle port 132 and the receiving projection 130.
• the triangular notch 138a interfaces with or interlocks with a corresponding feature on the second housing 112 to assist in coupling the first housing 110 to the second housing 112 with a waterproof seal. It should be understood, however, that the interlock recess 138 may not include the triangular notch 138a, but rather may define an endwall that is substantially perpendicular to the center axis CA (FIG. 2) or that a notch associated with the interlock recess 138 may have a different shape.
• the cannula receiving portion 148 is also defined by the first rib 154 and the second rib 156.
• the first rib 154 and the second rib 156 also cooperate to define a substantially rectangular region 159, which retains a portion of the cannula assembly 116.
• the ratchet shim 162 is coupled between the rotor 160 and the stator 164.
• the ratchet shim 162 is non-rotatably coupled to the stator 164, and inhibits a clockwise rotation of the rotor 160.
• the valve assembly 114 may be configured if desired to rotate in a clockwise direction.
• the rotor 160 rotates in a counterclockwise direction relative to the ratchet shim 162, and the ratchet shim 162 cooperates with the disc 172 of the rotor 160 to inhibit clockwise motion of the rotor 160.
• each of the anti-rotation tabs 206 is inclined at a positive angle or upward to engage with the plurality of angled notches 182 of the disc 172.
• the anti -rotation tabs 206 are inclined by an angle a, which is about 15 to about 180 degrees.
• the angle a is sized to enable the anti-rotation tabs 206 to move along the ramp surface 182a (FIG. 5B) of the disc 172 as the rotor rotates in the counterclockwise direction, but to abut the step surface 182b (FIG. 5B) in the rotation of the rotor 160 in the clockwise direction.
• the contact between the anti-rotation tabs 206 and the step surfaces 182b inhibits the rotation of the rotor 160 in the clockwise direction.
• the actuator shaft receiving portion 214 extends along an axis, which is substantially transverse or perpendicular to the longitudinal axis L of the valve assembly 114.
• the actuator shaft receiving portion 214 may also include a flange 215.
• the flange 215 may extend about a perimeter of the actuator shaft receiving portion 214 proximate the end 214a, and may include a bore 215a.
• the bore 215a may receive a mechanical fastener, such as a screw, pin, post, etc. to couple the actuator shaft receiving portion 214 to the control system 120.
• the flange 215 is composed of a conductive material, and the control system 120 is configured to supply a current to the flange 215.
• the actuator wire 234 extends through the actuator shaft 232.
• the actuator wire 234 includes a first post 256, a second post 258 opposite the first post 256 and a wire 260.
• the first post 256 and the second post 258 are generally cylindrical, and have a diameter that is greater than a diameter of the wire 260.
• the first post 256 and the second post 258 may be composed of a suitable conductive material, such as a metal or metal alloy, which is cast, molded, printed, stamped, etc.
• the first post 256 and the second post 258 may be coupled to the wire 260 via press-fit, ultrasonic welding, etc.
• Opposed ends of the wire 260 are coupled to a respective one of the first post 256 and the second post 258.
• the control system 120 supplies the current to the flange 215, which is received by the wire 260 via the first post 256 and is conducted by the wire 260 to the second flange 217, which conducts the current back to the control system 120.
• the current conducted by the wire 260 causes the wire to increase in temperature.
• the increase in temperature of the wire 260 causes the wire 260 to move from a first, extended state to a second, contracted state. In the first, extended state, the wire 260 is elongated within the wire receiving channel 246 as shown in FIG. 5, and the force Fs of the spring 230 maintains the actuator shaft 232 in the first position.
• the cannula assembly 116 is fluidly coupled to the outlet 200 of the valve assembly 114 to receive the fluid or insulin.
• the cannula assembly 116 receives the fluid or insulin from the valve assembly 114 and meters the delivery of the fluid to the user.
• the cannula assembly 116 includes a needle septum 290, a cannula plug 292, a cannula 294, a cannula sealing member 296, a flow sensor 298 and a flow sensor housing 300.
• the needle septum 290 is positioned between the second needle port 134 and the cannula plug 292.
• the needle septum 290 is downstream from the second needle port 134.
• the cannula plug 292 is positioned between the needle septum 290 and the cannula 294.
• the cannula plug 292 couples the cannula 294 to the flow sensor housing 300.
• the cannula plug 292 may be composed of a suitable biocompatible material, such as a polymer-based material, metal or metal alloy, which is cast, molded, printed, stamped, etc.
• the cannula plug 292 includes a first plug portion 302, a second plug portion 304 and a sealing band 306.
• the first plug portion 302 has a first end 308 opposite a second end 310, and has a sidewall 312 that interconnects the first end 308 with the second end 310.
• the first plug portion 302 is substantially cylindrical and hollow.
• the sealing band 306 is coupled to the first plug portion 302 to form a press-fit with the flow sensor housing 300 (FIG. 4).
• the sealing band 306 has a diameter that is different than, and in this example, greater than a diameter of the first plug portion 302 such that the sealing band 306 extends outwardly from the first plug portion 302 to form an interference fit or press-fit with the flow sensor housing 300.
• the sealing band 306 includes a band conduit 322, which is in fluid communication with the outlet 200 and the cannula 294.
• the band conduit 322 includes a band inlet 322a fluidly coupled to the flow sensor housing 300; and a band outlet 322b fluidly coupled to the conduit 314.
• the signals from the temperature sensors 329a, 329b are communicated to the control system 120, and the control system 120 determines the volume of the fluid delivered based on a difference between the two temperature signals.
• the signals from the temperature sensors may be filtered, if desired, to account for turbulence.
• the flow sensor 298 may also include a monitor module, which determines the volume based on the temperature signals, and transmits the determined volume to the control system 120.
• the flow sensor 298 includes a separate housing 298a, which includes the sensor inlet 330 and the sensor outlet 332, and also contains or encloses the temperature sensors 329a, 329a, the heater 328 and the flow conduit 331. It should be noted that the flow sensor 298 need not include a separate housing 298a, but may be defined within the flow sensor housing 300, if desired.
• the flow sensor 298 is received within the flow sensor housing 300, which defines a housing inlet conduit 336 and a housing outlet conduit 338.
• the housing inlet conduit 336 is fluidly coupled to the outlet 200 and the sensor inlet 330; and the housing outlet conduit 338 is fluidly coupled to the sensor outlet 332 and the band conduit 322 to provide the fluid or insulin to the cannula 294.
• the sealing member 346 is an elastomeric O-ring, however, other sealing mechanisms may be employed.
• the sealing member 346 is received within an inlet 348 of the flow sensor housing 300 and forms a seal about the outlet 200 of the stator 164 and the flow sensor housing 300, as shown in FIG. 4.
• the connecting portion 344 also defines the housing inlet conduit 336, which fluidly couples the outlet 200 to the sensor inlet 330.
• the glucose oxidase enzyme enables the glucose sensor 356 to monitor blood glucose levels in a diabetic patient or user by effecting a reaction of glucose and oxygen.
• glucose sensor 356 includes a distal end 356a, which is positionable in subcutaneous tissue of the user by an insertion needle of the insertion device to measure the glucose oxidase enzyme.
• a proximal end 356b of the glucose sensor 356 is physically and electrically coupled to the second sensor housing 358. The signals from the glucose sensor 356 are transmitted to the control system 120 via the second sensor housing 358.
• the communication device 392 includes, but is not limited to, a Bluetooth® transceiver, a radio transceiver, a cellular transceiver, a 2G/3G/4G LTE transceiver and/or a Wi-Fi transceiver.
• the communication device 392 can also comprise a one-way transmitter.
• the communication device 392 may also be configured to encode data or generate encoded data.
• the encoded data generated by the communication device 392 may be encrypted.
• the communication device 392 enables the controller 394 of the wearable infusion port 102 to communicate data, such as the volume of fluid dispensed by the valve assembly 114 (as observed by the flow sensor 298), a blood glucose level of the user (as observed by the glucose sensor 356), etc.
• the communication device 392 also enables the controller 394 to receive data, such as a volume of fluid to be dispensed to the user, from the remote device.
• the first housing 110 and the second housing 112 may be formed.
• the adhesive patch 122 is coupled to the second housing 112 and the cannula assembly 116 may be assembled.
• the flow sensor 298 and the flow sensor housing 300 formed, the flow sensor 298 is positioned within the flow sensor housing 300 such that the sealing members 334a, 334b surround the respective one of the sensor inlet 330 and sensor outlet 332 to create a seal between the sensor inlet 330, the sensor outlet 332 and the flow sensor housing 300.
• the continuous glucose monitor assembly 118 may also be assembled.
• the glucose sensor 356 is positioned through the second sensor housing 358.
• the electrical connection is established between the glucose sensor 356 and the outer sleeve 372.
• the sensor septum 354 is positioned over the proximal end 356b of the glucose sensor 356.
• the first sensor housing 352 is positioned over the second sensor housing 358 to compress the sensor septum 354.
• the sensor sealing member 350 is positioned within the seal groove 362 of the first sensor housing 352.
• the user may dispense the fluid or insulin F into the first needle port 132.
• the fluid F flows from the first needle port 132 (which is an inlet for the wearable infusion port 102) into the central bore 180 of the rotor 160.
• the valve assembly 114 is shown in the closed state. In the closed state, the second post 258 extends beyond the end 250 of the actuator shaft 232, and one of the conduits 194 of the conduit sleeve 170 is not aligned with the outlet conduit 224. Based on the receipt of the one or more control signals (or power) from the control system 120, with reference to FIG.
• the movement or translation of the actuator shaft 232 moves or rotates the actuator pinion 236 clockwise to its original position (as shown in FIG. 6). In one example, the actuator pinion 236 moves or rotates about 20 degrees clockwise back into the original position.
• the rotor 160 does not move or rotate with the actuator shaft 232 as the ratchet shim 162 and the actuator shim 238 inhibit the rotation of the shaft 175 clockwise.
• the fluid F flows into the housing inlet conduit 336 of the flow sensor housing 300. From the housing inlet conduit 336 the fluid F flows into the sensor inlet 330 of the flow sensor 298. The fluid F is heated by the heater 328, and the temperature sensors 329a, 329b observe the temperature of the fluid F (FIG. 7). The fluid F flows into the sensor outlet 332 and from the sensor outlet 332 through the housing outlet conduit 338 of the flow sensor housing 300. From the housing outlet conduit 338, the fluid flows through the band conduit 322 into the cannula plug 292, and into the cannula 294. The fluid F exits the distal end 324 of the cannula 294 into the subcutaneous tissue.
• the control receiving portion 544 is defined along a third surface 512b of the second housing 512, which is opposite a second surface 512a.
• the control receiving portion 544 includes at least one or a pair of posts 544a, which cooperate to retain a portion of the control system 520 within the second housing 512.
• the control receiving portion 544 may also include power supply ribs 544b, which assist in assembling a portion of the control system 520 to the second housing 512.
• the valve receiving portion 546 includes a plurality of posts 546a.
• the plug conduit 698 is defined within the cannula plug 692 to extend along the longitudinal axis L3 from the first plug end 702 to the second plug end 704.
• the plug conduit 698 receives the needle from the insertion device to couple the cannula 694 to the user, and also receives the fluid or insulin from the cross conduit 712 to deliver the fluid to the user via the cannula 694.
• the plug conduit 698 includes a first plug inlet 718, a second plug inlet 720 and a plug outlet 722.
• the needle septum 690 is coupled to the first plug inlet 718.
• the second plug inlet 720 is fluidly coupled to the cross outlet 716 to receive the fluid or insulin from the valve housing 564.
• the plug outlet 722 is fluidly coupled to a proximal end 694a of the cannula 694.
• the power supply 750 supplies power to the controller 752, which in turn supplies power to the wire 260, the flow sensor 562 and the communication device 392.
• the power supply 750 comprises the pair of coin cell batteries 390a, 390b, which are electrically coupled to the circuit board 754 via battery contact pads 758, 759 (FIG. 12). It should be noted, however, that any suitable power supply 750 may be employed with the control system 520, including, but not limited to, rechargeable batteries, solar cells, etc.
• the communication device 392 enables wireless communication between the wearable infusion port 102 and the remote device or portable electronic device associated with the user, including, but not limited to a cell phone, tablet, personal computer, smart watch, smart glasses, infusion pump, etc.
• the instructions may include one or more separate programs, each of which comprises an ordered listing of executable instructions for implementing logical functions.
• the instructions when executed by the processor 756, receive and process input signals, perform logic, calculations, methods and/or algorithms for controlling the components of the wearable infusion port 500, and generate control signals to components of the wearable infusion port 500 to output one or more control signals and/or data based on the logic, calculations, methods, and/or algorithms.
• controller 752 is shown in FIG.
• one or more instructions of the controller 752 are associated with the wearable infusion port 500 and, when executed by the processor 756, the instructions receive and process signals from the flow sensor 562 and determine a volume of fluid or insulin that has been received by the valve assembly 514.
• the instructions of the controller 752, when executed by the processor 756, output one or more control signals to the valve assembly 514 to move the valve assembly 514 from the closed state to the opened state to dispense fluid or insulin to the user based on one or more control signals received from the portable electronic device.
• the instructions of the controller 752, when executed by the processor 756, output one or more control signals to the valve assembly 514 to move the valve assembly 514 from the opened state to the closed state based on the determined volume of the fluid or insulin received.
• the processor 756 of the control system 520 may be configured to determine, based on the sensor signals from the flow sensor 562 and a known quantity of fluid or insulin that may be contained in the inlet port 572 of the valve housing 564, a quantity or volume of the fluid or insulin remaining within the reservoir defined by the inlet port 572. Based on this determination, the control system 520 may be configured to output one or more notifications to the user to dispense additional quantities of fluid into the wearable infusion port 500. Generally, once coupled to the user, the wearable infusion port 500 may be worn by the user for about 7 to about 10 days.
• the wearable infusion port 500 enables a user to infuse a fluid, such as insulin, into the subcutaneous tissue of the user over an extended period of time without requiring the user to directly inject the fluid into the anatomy of the user. This greatly reduces the number of times the user has to insert a needle or pierced tip instrument into their anatomy, while providing the user with the necessary infusion therapy. For users who require multiple injections of fluid or insulin a day, the user is subjected to a single insertion of the wearable infusion port 500 instead of multiple insertions with needle syringes, etc.
• the remote device may communicate with the control system 520 of the wearable infusion port 500 to control the wearable infusion port 500 to dispense the insulin.
• the pump 104 includes a first pump housing 800, a plunger assembly 802, a biasing member or torsion spring 804 and a lock system 806.
• the torsion spring 804 and the lock system 806 cooperate to define an actuator system 809 for the pump 104.
• the pump 104 may also include a cap, cover, plug or the like, which cooperates with the first pump housing 800 to enclose the plunger assembly 802, the torsion spring 804 and the lock system 806, without obstructing the operation of a cannula assembly 834, described below.
• the second reservoir end 816 is circumferentially closed (FIG. 22).
• the fluid such as insulin, is contained within each of the fluid reservoirs 810a, 810b in a fluid chamber 811 that is defined by each of the fluid reservoirs 810a, 810b between the first reservoir end 814 and the second reservoir end 816.
• the plunger assembly 802 is received within each of the fluid reservoirs 810a, 810b, and is movable within the fluid reservoirs 810a, 810b to dispense the fluid from the pump 104.
• the keyed projections 822 and the keyed grooves 824 also direct a translational movement of the lock system 806 relative to the first pump housing 800 as will be discussed further herein.
• the retaining flange 820 couples the plunger assembly 802 to the first pump housing 800.
• the retaining flange 820 includes opposed lips 826, which cooperate with the plunger assembly 802 to guide a rotation of the plunger assembly 802 relative to the first pump housing 800.
• the plunger base 830 and the plunger arms 832a, 832b may be composed of a suitable biocompatible material, including, but not limited to a biocompatible polymer-based material, which may be molded, printed, cast, etc.
• the plunger arms 832a, 832b may be separately or integrally formed with the plunger base 830.
• a side view of the plunger assembly 802 is shown in FIG. 20B.
• the central bore 840 extends along a central axis CA of the pump 104.
• the central bore 840 defines a notch 840a (FIG. 18), which assists in coupling the cannula assembly 834 to the plunger base 830.
• the plunger base 830 also defines a pair of cut-outs 842 about a portion of a perimeter or circumference of the central bore 840 and a plunger lock surface
• the cut-outs 842 as well as providing mass savings, afford access to the lock plate 910 as will be discussed below. They are substantially crescent-shaped to allow access regardless of the orientation of the plunger base 830 with respect to the housing 800.
• the cut-outs 842 are defined to extend about the central bore 840 from either side of the base conduit 838 (FIG. 21).
• the plunger lock surface 841 is defined proximate the cut-outs 842, and is defined to extend about a perimeter or a circumference of an area adjacent to an annular flange 835.
• the plunger lock surface 841 includes a plurality of teeth 841a, which cooperate to engage with a corresponding plurality of teeth 915a defined on the lock plate 910.
• the lock plate 910 has associated therewith a pair of upstanding posts 910a, 910b which extend through the cut outs 842 to allow a longitudinal force to be applied to the lock plate 910 to force the teeth 915a on the lock plate out of engagement with the teeth 841a of the plunger lock surface 841.
• the upstanding posts 910a, 910b in the embodiment shown in FIG 20 can be attached to the lock plate 910, or they can be attached to each other by webbing.
• the annular flange 835 extends outwardly from the plunger base 830, and surrounds the cannula assembly 834.
• the annular flange 835 is sized and shaped to receive the lock plate 910.
• a first side 835a of the annular flange 835 is selectively coupled to the torsion spring 804 via the lock system 806, and a second side 835b of the annular flange 835 (opposite the first side 868) is proximate the lock system 806.
• the plunger base 830 also defines a second pair of cut outs 844.
• the second pair of cut-outs 844 are substantially rectangular, and are defined through the plunger base 830 proximate the at least one guide flange 836.
• the cannula assembly 834 is configured to be coupled to the wearable infusion port 102, 500 to transfer the fluid received from the fluid reservoirs 810a, 810b to the wearable infusion port 102, 500.
• the cannula assembly 834 includes a cannula coupling portion 850 and a cannula 852.
• the cannula coupling portion 850 is substantially cylindrical, and defines a coupling flange 854, a conduit 856 (FIG. 21) and a central cannula bore 858 (FIG. 21).
• the cannula coupling portion 850 has a first end 850a and an opposed second end 850b.
• the first end 850a and the second end 850b each extend a distance beyond a respective surface of the plunger base 830.
• the second end 850b generally extends the distance beyond the surface of the plunger base 830 to receive an external force Fe.
• the coupling flange 854 is defined about a perimeter or circumference of the cannula coupling portion 850 and in one example, includes a groove 851.
• the groove 851 is configured to form an interference fit with the corresponding notch 840a defined in the central bore 840.
• the interference fit also forms a seal between the plunger base 830 and the cannula assembly 834.
• the conduit 856 is defined through the coupling flange 854 to fluidly couple the cannula 852 to the base conduit 838.
• the conduit 856 is defined along an axis that is transverse or substantially perpendicular to the central axis CA.
• the conduit 856 includes a branch 856a defined through the coupling flange 854 at a first end to extend to the central cannula bore 858, and a branch 856b defined through the coupling flange 854 at an opposed second end to extend to the central cannula bore 858.
• the number of branches 856a, 856b of the conduit 856 may be based on the number of plunger arms 832, and thus, the use of two branches 856a, 856b is merely an example.
• Each of the branches 856a, 856b includes a branch inlet 857 in fluid communication with the respective base branches 838a, 838b, and a branch outlet 859 in fluid communication with the central cannula bore 858.
• the central cannula bore 858 is defined through the cannula coupling portion 850 along the central axis CA.
• the central cannula bore 858 fluidly couples the cannula 852 to the conduit 856.
• the central cannula bore 858 is defined through the cannula coupling portion 850 from the first end 850a to the second end 850b.
• the central cannula bore 858 includes a septum 860 received proximate the first end 850a, which serves to prevent the ingress and egress of fluids into/out of the central cannula bore 858.
• the central cannula bore 858 has a pair of inlets 862 defined between the first end 850a and the second end 850b. Each of the inlets 862 receives the fluid from the respective branch outlet 859 of the branches 856a, 856b, and directs the fluid from the branches 856a, 856b into the cannula 852.
• the at least one guide flange 836 is defined on the plunger base 830 on a first surface 830a of the plunger base 830, and the first surface 830a is opposite a second surface 830b.
• the at least one guide flange 836 comprises two guide flanges 836a, 836b, which are spaced apart about a perimeter or circumference of the plunger base 830.
• the guide flanges 836a, 836b project outwardly from the first surface 830a, and define a lip 837.
• the lip 837 of the first side 868 of each of the guide flanges 836a, 836b is coupled to a respective one of the lips 826 of the retaining flange 820 when the plunger assembly 802 is in a first, unlocked position and engaged with the torsion spring 804.
• the lip 837 of the first side 868 of the guide flanges 836a, 836b is unengaged with or spaced apart from the retaining flange 820 when the plunger assembly 802 is in the second, locked position.
• the engagement of the lip 837 of the first side 868 of each of the guide flanges 836a, 836b with the retaining flange 820 guides a movement or rotation of the plunger base 830 relative to the first pump housing 800.
• the base conduit 838 is defined from the respective one of the plunger arms 832a, 832b, and extends from the respective one of the plunger arms 832a, 832b to the respective one of the branches 856a, 856b of the central cannula bore 858 to fluidly couple the plunger arms 832a, 832b to the cannula 852 (FIG. 20C).
• the base conduit 838 includes two base branches 838a, 838b (FIG. 20C). It should be noted that the number of base branches 838a, 838b is directly proportional to the number of plunger arms 832 to enable fluid communication between the plunger arms 832 and the cannula 852.
• Each of the base branches 838a, 838b include a base inlet 872 in fluid communication with the respective plunger arm 832a, 832b, and a base outlet 874 in fluid communication with the respective branch inlet 857 of the branches 856a, 856b of the cannula coupling portion 850 to receive the fluid from the plunger arms 832a, 832b and deliver the fluid to the cannula 852.
• the plunger arms 832 are asymmetric with respect to the central axis CA.
• Each of the base connectors 880 couple the plunger arms 832a, 832b to the plunger base 830, and fluidly couple the plunger arms 832a, 832b to the respective one of the base branches 838a, 838b.
• Each of the base connectors 880 include a connector 886 and a cylindrical cap 888.
• the connector 886 couples each of the plunger arms 832a, 832b physically and fluidly to the plunger base 830.
• Each connector 886 includes a connector conduit 890, which is in fluid communication with the respective one of the base branches 838a, 838b (FIG. 20C).
• Each connector conduit 890 includes an inlet 892 in fluid communication with the respective plunger body 882, and an outlet 894 in fluid communication with a respective base inlet 872 of the base branches 838a, 838b.
• the connector conduit 890 may be substantially L-shaped to direct the fluid from the plunger body 882 to the base branches 838a, 838b.
• the caps 888 are each configured to enclose the fluid reservoirs 810a, 810b when the plunger arms 832a, 832b are fully received within the respective one of the fluid reservoirs 810a, 810b.
• Each cap 888 has a diameter, which is different, and in this example, greater than a diameter of the plunger body 882.
• Each of the plunger bodies 882 have a first end 896 opposite a second end 898, and define a body conduit 900 from the first end 896 to the second end 898.
• the first end 896 is coupled to the base connector 880, and the second end 898 is coupled to the plunger 884.
• the plunger bodies 882 are cantilevered relative to the base connectors 880.
• the second end 898 of the plunger bodies 882 may be bulbous to receive the plunger 884.
• each second end 898 has a diameter, which is different, and in this example, greater than the diameter of the plunger body 882.
• Each of the body conduits 900 direct the fluid out of the respective fluid reservoir 810a, 810b into the plunger base 830, and thus, the cannula 852 (FIG. 20C).
• Each body conduit 900 includes an inlet 902 and an outlet 904.
• the inlet 902 is fluidly coupled to the respective plunger 884 to receive the fluid from the fluid reservoir 810a, 810b.
• the outlet 904 is fluidly coupled to the inlet 892 of the base connector 880 to direct the fluid from the fluid reservoirs 810a, 810b to the base branches 838a, 838b.
• Each plunger 884 surrounds the second end 898 of the respective plunger body 882.
• the plunger 884 is substantially spherical, and defines a central chamber 884a, which enables the plunger 884 to be received about the second end 898 to enclose the second end 898.
• Each plunger 884 defines an inlet 906, which receives the fluid from the respective fluid reservoir 810a, 810b.
• the inlet 906 is fluidly coupled to the inlet 902 of the respective plunger body 882 to direct the fluid from the respective fluid reservoir 810a, 810b through the plunger assembly 802 and into the cannula 852 (FIG. 20C).
• Each plunger 884 may be composed of a biocompatible polymer-based material, which may be cast, molded, etc. and coupled to the second end 898.
• the plunger 884 may also be overmolded onto the second end 898 of the respective plunger body 882, or may be integrally formed with the respective plunger body 882.
• the plunger 884 is generally sized to have a diameter, which is about the same as the diameter of the respective fluid reservoir 810a, 810b so that the plungers 884 form a seal along the side of the fluid reservoir 810a, 810b.
• the seal formed by the plungers 884 within the respective fluid reservoir 810a, 810b ensures that the fluid is dispensed from the fluid reservoirs 810a, 810b via the inlet 906, and inhibits leaking of the fluid about the plunger 884. Further, the seal formed by the plungers 884 results in an increase in pressure within the fluid reservoirs 810a, 810b as the plunger arms 832a, 832b advance within the fluid reservoirs 810a, 810b, which assists in the dispensing of the fluid from the fluid reservoirs 810a, 810b into the plunger assembly 802, and thus, the cannula 852.
• the torsion spring 804 moves the plunger assembly 802 in a first direction, which in this example is counterclockwise, to dispense the fluid from the fluid reservoirs 810a, 810b.
• first direction which in this example is counterclockwise
• the plunger arms 832 are inhibited from moving to dispense the fluid.
• the advancement of the plunger arms 832a, 832b within the fluid reservoirs 810a, 810b pressurize the fluid reservoirs 810a, 810b and dispense the fluid from the fluid reservoirs 810a, 810b.
• the torsion spring 804 is inhibited from applying the torque to the plunger assembly 802.
• the lock plate 910 may be composed of a suitable biocompatible material, including, but not limited to a biocompatible polymer-based material, metal or metal alloy, which may be molded, printed, cast, stamped, etc.
• the first plate side 914 and the second plate side 916 are substantially planar or flat.
• the first plate side 914 includes a plate lock surface 915.
• the plate lock surface 915 is defined about a perimeter or circumference of the lock plate 910 and includes the plurality of teeth 915a.
• the plurality of teeth 915a cooperate with the plurality of teeth 841a to lock the plunger assembly 802, and thus, the pump 104 in the second, locked position. As shown in FIG.
• the second plate side 916 includes a collar 916a, which assists in aligning the lock spring 912 relative to the first pump housing 800.
• the plate bore 918 defines the keyed grooves 824, which engage with the keyed projections 822 of the first pump housing 800 to couple the lock plate 910 to the first pump housing 800.
• the lock spring 912 is a wave spring, which biases the lock plate 910 into the plunger assembly 802 to position the plunger assembly 802 in the second, locked position (FIG. 24).
• the lock spring 912 is composed of a metal or metal alloy, such as a spring steel, and may be shaped to form the lock spring 912.
• the lock spring 912 includes a plurality of undulations 912a, which cooperate to form a compression spring.
• the lock spring 912 is compressible upon the application of an external force Fe to the lock plate 910 via the posts 910a, 910b (not shown in FIG 23 and 24) through the cut-outs in the plunger base 830. This moves the plunger assembly 802 from the second, locked position (FIG.
• the external force Fe is a force applied to the plunger assembly 802 in a vertical direction to move the plunger assembly 802 toward the first pump housing 800.
• the plunger assembly 802 is transformed from the second, locked position (FIG. 24) to the first, unlocked position (FIG. 23) by pressure in a first direction (which is vertical in this example) and is movable in a second direction (counterclockwise) to dispense the fluid from the fluid reservoirs 810a, 810b.
• the lock spring 912 exerts a spring force Fs2 (FIG. 24) in a direction to bias the plunger assembly 802 in the second, locked position.
• the fluid reservoirs 810a, 810b are filled with the fluid, such as insulin, and the plunger assembly 802 is coupled to the first pump housing 800 such that the plungers 884 form a seal with the fluid reservoirs 810a, 810b to contain the fluid within the fluid reservoirs 810a, 810b.
• the contact between the cannula coupling portion 850 and the first surface 110a creates the external force Fe, which overcomes the spring force Fs2 exerted by the lock spring 912 and causes the lock plate 910 to move toward the first pump housing 800 (FIG. 23).
• the torsion spring 804 applies a force to the annular flange 835 to move or rotate the plunger assembly 802 relative to the fluid reservoirs 810a, 810b.
• the plunger assembly 802 (and the pump 104) is in the first, unlocked position (FIG. 23).
• the inlet 906, the body conduit 900 and the connector conduit 890 of the respective plunger arm 832a, 832b along with the respective base branch 838a, 838b and the respective branch 856a, 856b cooperate to define an internal conduit of the plunger assembly 802 that cooperates to dispense the fluid contained within the respective fluid reservoir 810a, 810b into the cannula 852, and from the cannula 852, into the wearable infusion port 102.
• the pump 104 enables a user to supply a fluid, such as insulin, to a wearable infusion port or other device in increments, which is beneficial to users who require multiple fluid infusions over the course of a day. Moreover, the pump 104 enables a user to carry multiple doses of the fluid or insulin with them in a single housing, and eliminates the need to carry multiple syringes. It should be noted that while not shown herein, the pump 104 may be coupled to an adhesive patch, such as the adhesive patch 122, and coupled to the anatomy as a patch pump.
• a wearable infusion port for infusing a fluid comprising: a first housing that defines an inlet port to receive the fluid; a second housing coupled to the first housing, the second housing to be coupled to an anatomy; a valve assembly fluidly coupled to the inlet port to receive the fluid, the valve assembly movable from a closed state to an opened state to dispense the fluid; a cannula assembly extending through the first housing and the second housing, the cannula assembly including a cannula fluidly coupled to the valve assembly to receive the fluid, the cannula to be coupled to the anatomy to infuse the fluid into the anatomy; and a flow sensor fluidly coupled to the inlet port and the cannula, the flow sensor fluidly coupled upstream from the cannula to observe an amount of fluid received by the cannula.
• Embodiment A2 The wearable infusion port of embodiment Al, wherein the valve assembly is enclosed by the first housing and the second housing, and the valve assembly includes a valve housing and a shaft, and the shaft is movable relative to the valve housing to move the valve assembly between the closed state and the opened state.
• Embodiment A9 The wearable infusion port of embodiment Al, further comprising a physiological characteristic sensor coupled to the first housing proximate an end of the first housing and spaced apart from the inlet port, and the physiological characteristic sensor is to be coupled to the anatomy to observe a physiological characteristic associated with the anatomy.
• Embodiment A15 The wearable infusion port of embodiment All, further comprising an actuator wire coupled to the shaft, the actuator wire movable between a first state and a second state to move the shaft, and in the second state the valve assembly is in the opened state.
• a pump (104) for delivering a fluid comprising: a pump housing (800) that defines at least one reservoir (810) having a circumferentially open first end (814), a circumferentially closed second end (816) and a chamber defined between the first end (814) and the second end (816) to receive the fluid; and a plunger assembly (802) having at least one plunger arm (832) and a cannula (834) fluidly coupled to the at least one plunger arm (832) to dispense the fluid from the pump (104), the at least one plunger arm (832) receivable within the first end (814) of the at least one fluid reservoir (810), the at least one plunger arm (832) defining an internal conduit (838) to receive the fluid from the at least one fluid reservoir (810), the internal conduit (38) is fluidly coupled to the cannula (834), and the plunger assembly (802) is movable in a first direction relative to the pump
• Embodiment B3 The pump of embodiment Bl or B2 wherein the pump housing (800) is circular and the direction of movement of the plunger assembly (802) to dispense fluid is a rotation about the axis of the housing.
• Embodiment B4 The pump of any of embodiments Bl to B3, further comprising a lock system (806) coupled to the pump housing (800) between the pump housing (800) and the plunger assembly (802), the lock system (806) movable between a first, unlocked position in which the plunger assembly (802) is movable relative to the pump housing (800) to dispense the fluid and a second, locked position in which the plunger assembly (802) is fixed relative to the pump housing (800).
• a lock system (806) coupled to the pump housing (800) between the pump housing (800) and the plunger assembly (802), the lock system (806) movable between a first, unlocked position in which the plunger assembly (802) is movable relative to the pump housing (800) to dispense the fluid and a second, locked position in which the plunger assembly (802) is fixed relative to the pump housing (800).
• Embodiment B7 The pump of any of embodiments B4 to B6, wherein at least part of the plunger assembly (802) is movable in a second relative to the pump housing (800) to move the plunger assembly (802) between the second, locked position and the first, unlocked position and the second direction is different than the first direction.
• Embodiment B8 The pump of any of embodiments B4 to B6, wherein at least part of the plunger assembly (802) is movable in a second relative to the pump housing (800) to move the plunger assembly (802) between the second, locked position and the first, unlocked position and the second direction is different than the first direction.
• Embodiment Bll The pump of any of embodiments B1 to B10, wherein the plunger assembly (802) further comprises a plunger base (830), the at least one arm (832) is coupled to a perimeter of the plunger base (830), the cannula (854) is coupled proximate a centre of the plunger base (830) and a conduit is defined in the base to fluidly couple the internal conduit to the cannula (854).
• Embodiment B12 The pump of any of embodiments B1 to B11, wherein the fluid is insulin and the pump is an insulin pump.
• Embodiment B13 The pump of any of embodiments B1 to B12 wherein the housing has a sidewall that extends beyond the plunger assembly (802), one plunger arm (832) and cannula (834) to form an open ended cavity.
• Embodiment B14 An infusion system comprising a pump according to embodiment B13 and a wearable infusion port (102, 500) for infusing a fluid into an anatomy, the infusion port (102, 500) comprising: a housing structure (110, 510, 112,

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• 2020
  • 2020-11-02 CN CN202080085389.8A patent/CN115243753A/zh active Pending
  • 2020-11-02 EP EP20811924.8A patent/EP4061468A1/de active Pending
  • 2020-11-02 WO PCT/US2020/058496 patent/WO2021101696A1/en unknown

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