Patents by Inventor John M. Kerwin

John M. Kerwin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12036387
    Abstract: An apparatus for determining the volume of fluid dispensed. The apparatus has an acoustic volume sensor that acoustically excites a reference volume and a measurement chamber with a loudspeaker and measures the acoustic response with microphones acoustically coupled to the reference and the measurement chamber. The loudspeaker and sensing microphones are connected to the measurement chamber by separate ports. A detachable dispensing chamber is coupled to the acoustic volume sensor. The volume of the fluid dispensed is determined by a processor based on the acoustic response of the microphones to acoustic excitement by the loudspeaker.
    Type: Grant
    Filed: March 27, 2023
    Date of Patent: July 16, 2024
    Assignee: DEKA Products Limited Partnership
    Inventors: Dean Kamen, Larry B. Gray, Russell H. Beavis, John M. Kerwin, Derek G. Kane
  • Publication number: 20240230390
    Abstract: An acoustic volume sensing device is disclosed. The device includes a housing comprising a reference volume chamber and a variable volume chamber, the reference volume chamber and the variable volume chamber connected by a resonant port, a first MEMS microphone located in acoustic relation to the variable volume chamber, a second MEMS microphone located in acoustic relation to the reference volume chamber, a MEMS speaker located in acoustic relation to the reference volume chamber, and a circuit board in electric connection with the first and second MEMS microphones and the MEMS speaker.
    Type: Application
    Filed: October 23, 2023
    Publication date: July 11, 2024
    Inventors: Gregory R. Lanier, JR., John M. Kerwin, Colin H. Murphy, Larry B. Gray
  • Patent number: 12029881
    Abstract: A pump for pumping fluid includes a tube platen, a plunger, a bias member, inlet and outlet valves, an actuator mechanism, a position sensor, and a processor. The plunger is configured for actuation toward and away from the infusion-tube when the tube platen is disposed opposite to the plunger. The tube platen can hold an intravenous infusion tube. The bias member is configured to urge the plunger toward the tube platen.
    Type: Grant
    Filed: November 22, 2022
    Date of Patent: July 9, 2024
    Assignee: Deka Products Limited Partnership
    Inventors: Dean Kamen, John M. Kerwin, Colin H. Murphy, Jonathan Parker, Daniel F. Pawlowski, Dirk A. van der Merwe, Larry B. Gray, Christopher C. Langenfeld, Michael S. Place, Michael J. Slate
  • Patent number: 12020798
    Abstract: A peristaltic pump, and related method, are disclosed that includes a cam shaft, a plunger-cam follower, a tube receiver, a spring, a plunger, a door, and a plunger lift lever. The cam shaft includes a plunger cam. The plunger-cam follower engages with the plunger cam of the cam shaft. The spring provides a bias and the plunger is biased toward the tube receiver by the spring. The plunger is coupled to the plunger-cam follower where expansion of the plunger cam along a radial angle intersecting the plunger-cam follower as the cam shaft rotates actuates the plunger away from the tube receiver. The door lever can be actuated between a first position and a second position. The plunger lift lever is coupled to the door lever to actuate the plunger away from the tube receiver when the door lever is actuated to the second position.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: June 25, 2024
    Assignee: DEKA Products Limited Partnership
    Inventors: Dean Kamen, John M. Kerwin, Colin H. Murphy, Christopher C. Langenfeld, Michael J. Slate, Michael S. Place, Larry B. Gray
  • Publication number: 20240197984
    Abstract: A method for controlling a device using a shape-memory alloy wire is disclosed. The method includes determining an ontime for the shape-memory alloy wire based on a target volume to be pumped by a pump plunger, determining the temperature of the shape-memory alloy wire and adjusting the ontime based on the temperature of the shape-memory alloy wire.
    Type: Application
    Filed: February 2, 2024
    Publication date: June 20, 2024
    Inventors: Colin H. Murphy, Dean Kamen, John M. Kerwin, Larry B. Gray
  • Patent number: 12002561
    Abstract: A peristaltic pump, and related system method are provided. The peristaltic pump includes a cam shaft, first and second pinch-valve cams, first and second pinch-valve cam followers, a plunger cam, a plunger-cam follower, a tube receiver, and a spring-biased plunger. The first and second pinch-valve cams are coupled to the cam shaft. The first and second pinch-valve cam followers each engage the first and second pinch-valve cams, respectively. The plunger cam is coupled to the cam shaft. The plunger-cam follower engages the plunger cam. The tube receiver is configured to receive a tube. The spring-biased plunger is coupled to the plunger-cam follower such that the expansion of the plunger cam along a radial angle intersecting the plunger-cam follower as the cam shaft rotates pushes the plunger cam follower towards the plunger and thereby disengages the spring-biased plunger from the tube. A spring coupled to the spring-biased plunger biases the spring-biased plunger to apply the crushing force to the tube.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: June 4, 2024
    Assignee: DEKA Research & Development Corp
    Inventors: Dean Kamen, John M. Kerwin, Colin H. Murphy, Larry B. Gray, Christopher C. Langenfeld, Michael J. Slate, Michael S. Place
  • Publication number: 20240168500
    Abstract: A flow control device is disclosed. The flow control device includes a solenoid, the solenoid including an armature. Also, a piston connected to the armature. The piston includes a primary orifice. The piston having an open position and a closed position. A piston spring connected to the piston is also includes and at least one secondary orifice. The movement of the piston to the open position at least partially opens the at least one secondary orifice and the movement of the piston to the closed position at least partially closes the at least one secondary orifice. The movement of the armature actuates the piston movement and controls fluid flow from the primary orifice through the at least one secondary orifice.
    Type: Application
    Filed: January 26, 2024
    Publication date: May 23, 2024
    Inventors: Beavis H. Russell, Benjamin W. Jones, JR., John M. Kerwin, Larry B. Gray, Casey P. Manning, Felix Winkler, Robert A. Charles
  • Publication number: 20240161899
    Abstract: A pump for administering an agent to a patient includes a housing, a motor, a gearbox, a sensor, and a controller. The motor may be coupled to housing. The gearbox is operatively connected to the motor. The sensor senses a rotation of the motor. The controller acts to control operation of the motor and monitor the quantity of the agent delivered to the patient. The pump also includes a pump assembly such that the pump is configured such that the pump assembly may be interchangeable from a syringe pump assembly and a peristaltic pump assembly.
    Type: Application
    Filed: May 19, 2023
    Publication date: May 16, 2024
    Inventors: Dean Kamen, Larry B. Gray, Jesse T. Bodwell, John M. Kerwin, Michael J. Baier, Dirk A. van der Merwe
  • Publication number: 20240133513
    Abstract: A clamp includes a fixed gripper, a moveable gripper, a driven member, an actuator, and first and second tracks. The driven member is configured to slide within the first and second tracks. The moveable gripper is operatively coupled to the driven member. The actuator is configured to move the driven member towards a first position to thereby move the moveable gripper towards the fixed gripper. The actuator is further configured to move the driven member towards a second position to thereby move the moveable gripper away from the fixed gripper.
    Type: Application
    Filed: January 4, 2024
    Publication date: April 25, 2024
    Inventors: Larry B. GRAY, Thomas A. FRIEDRICH, Erik N. SABIN, John M. KERWIN, Richard J. LANIGAN
  • Publication number: 20240133727
    Abstract: An acoustic volume sensing device is disclosed. The device includes a housing comprising a reference volume chamber and a variable volume chamber, the reference volume chamber and the variable volume chamber connected by a resonant port, a first MEMS microphone located in acoustic relation to the variable volume chamber, a second MEMS microphone located in acoustic relation to the reference volume chamber, a MEMS speaker located in acoustic relation to the reference volume chamber, and a circuit board in electric connection with the first and second MEMS microphones and the MEMS speaker.
    Type: Application
    Filed: October 22, 2023
    Publication date: April 25, 2024
    Inventors: Gregory R. Lanier, JR., John M. Kerwin, Colin H. Murphy, Larry B. Gray
  • Patent number: 11964126
    Abstract: A wearable infusion pump assembly includes a reservoir for receiving an infusible fluid, and an external infusion set configured to deliver the infusible fluid to a user. A fluid delivery system is configured to deliver the infusible fluid from the reservoir to the external infusion set. The fluid delivery system includes a volume sensor assembly, and a pump assembly for extracting a quantity of infusible fluid from the reservoir and providing the quantity of infusible fluid to the volume sensor assembly. The volume sensor assembly is configured to determine the volume of at least a portion of the quantity of fluid. The fluid delivery system further includes at least one optical sensor assembly configured to sense the movement of the pump assembly, a first valve assembly configured to selectively isolate the pump assembly from the reservoir, and a second valve assembly configured to selectively isolate the volume sensor assembly from the external infusion set.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: April 23, 2024
    Assignee: DEKA Products Limited Partnership
    Inventors: Gregory R. Lanier, Jr., Larry B. Gray, Richard J. Lanigan, Dean Kamen, Stephen L. Fichera, John M. Kerwin
  • Publication number: 20240115804
    Abstract: A pump for pumping fluid includes a tube platen, a plunger, a bias member, inlet and outlet valves, an actuator mechanism, a position sensor, and a processor. The plunger is configured for actuation toward and away from the infusion-tube when the tube platen is disposed opposite to the plunger. The tube platen can hold an intravenous infusion tube. The bias member is configured to urge the plunger toward the tube platen.
    Type: Application
    Filed: October 10, 2023
    Publication date: April 11, 2024
    Inventors: Dean KAMEN, John M. Kerwin, Colin H. Murphy, Jonathan Parker, Daniel F. Pawlowski, Dirk A. Van Der Merwe, Larry B. Gray, Christopher C. Langenfeld, Michael S Place, Michael J. Slate
  • Publication number: 20240108819
    Abstract: A system is disclosed. The system includes a fill adapter device including a heat exchanger which includes a heating element and a fluid pathway, the fluid pathway fluidly connected to a filling needle input, whereby fluid enters the heat exchanger through the filling needle input and flows through the fluid pathway and whereby the fluid is heated by the heating element. The system also includes a reservoir including a plunger and a plunger rod and a filling needle configured to be removably attached to the reservoir, wherein the fill adapter is configured to be attached to a vial of fluid and wherein fluid from the vial flows through the fluid pathway and is heated and loaded into the reservoir through the filling needle.
    Type: Application
    Filed: December 11, 2023
    Publication date: April 4, 2024
    Inventors: Dean Kamen, John M. Kerwin, Kevin A. Durand, Larry B. Gray, Gregory R. Lanier, JR., Colin H. Murphy
  • Publication number: 20240087739
    Abstract: A hub is disclosed that includes a network, first and second modules, a processor, a failsafe bus, and an alarm wire bus. The network interface component communicates data with a medical device. The first module interfaces with a first communications channel, and the second module interfaces with a second communications channel. The processor packages the data from the medical device into at least one packet. The processor communicates with one of the first and second modules to communicate one or more packets over one of the first and second communications channels. The failsafe bus signals from the hub to the medical device when a fatal-error fault condition of the hub has occurred. The alarm wire bus signals from the hub to the medical device when an alarm condition of the hub has occurred to cause the medical device to execute at least one mitigation.
    Type: Application
    Filed: November 20, 2023
    Publication date: March 14, 2024
    Inventors: Dean Kamen, John M. Kerwin, Todd A. Ballantyne, Frederick Morgan, Jason A. Demers, John J. Biasi
  • Publication number: 20240082487
    Abstract: A syringe pump includes a lead screw, a cam, and a grasper. The grasper assembly has first and second graspers arms each having a first end and a second end. The second ends of the first and second grasper arms are configured to engage with the lead screw. The first ends of the first and second grasper arms are configured to engage with the cam such that actuation of the cam toward the grasper assembly causes the second ends of the first and second grasper arms to pivotally approach each other. The second ends of the first and second grasper arms each includes threads to engage the lead screw when the second ends of the first and second grasper arms approach each other. The plunger head coupled to said grasper assembly and operative to drive a plunger of a syringe into a barrel of said syringe.
    Type: Application
    Filed: November 22, 2023
    Publication date: March 14, 2024
    Inventors: Dean Kamen, Larry B. Gray, Jesse T. Bodwell, John M. Kerwin, Michael J. Baier, Dirk A. Van Der Merwe, Stephen L. Fichera, Jonathan R. Thurber, Martin D. Desch
  • Patent number: 11906988
    Abstract: A flow control device is disclosed. The flow control device includes a solenoid, the solenoid including an armature. Also, a piston connected to the armature. The piston includes a primary orifice. The piston having an open position and a closed position. A piston spring connected to the piston is also includes and at least one secondary orifice. The movement of the piston to the open position at least partially opens the at least one secondary orifice and the movement of the piston to the closed position at least partially closes the at least one secondary orifice. The movement of the armature actuates the piston movement and controls fluid flow from the primary orifice through the at least one secondary orifice.
    Type: Grant
    Filed: August 29, 2022
    Date of Patent: February 20, 2024
    Assignee: DEKA Products Limited Partnership
    Inventors: Russell H. Beavis, Benjamin W. Jones, John M. Kerwin, Larry B. Gray, Casey P. Manning, Felix Winkler, Robert A. Charles
  • Publication number: 20240042127
    Abstract: A system for at least partial closed-loop control of a medical condition is disclosed. The system includes at least one medical fluid pump. The medical fluid pump including a sensor for determining the volume of fluid pumped by the pump. Also, at least one continuous analyte monitor, and a controller. The controller is in communication with the medical fluid pump and the at least one continuous analyte monitor. The controller includes a processor. The processor includes instructions for delivery of medical fluid based at least on data received from the at least one continuous analyte monitor.
    Type: Application
    Filed: July 24, 2023
    Publication date: February 8, 2024
    Inventors: Dean Kamen, John M. Kerwin, Larry B. Gray, Marc A. Mandro, David Blumberg, JR.
  • Patent number: 11890448
    Abstract: A method for controlling a device using a shape-memory alloy wire is disclosed. The method includes determining an ontime for the shape-memory alloy wire based on a target volume to be pumped by a pump plunger, determining the temperature of the shape-memory alloy wire and adjusting the ontime based on the temperature of the shape-memory alloy wire.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: February 6, 2024
    Assignee: DEKA Products Limited Partnership
    Inventors: Colin H. Murphy, Dean Kamen, John M. Kerwin, Larry B. Gray
  • Publication number: 20240009007
    Abstract: A control system for control of a prosthetic device having a plurality of actuators receives an orientation signal indicative of a desired movement. The control system evaluates whether the prosthetic device may move as desired with a current angle of rotation and commands at least one actuator to move the prosthetic device as desired by maintaining the current angle of rotation or by adjusting the angle of rotation if the prosthetic device cannot move as desired with the current angle. The control system may alternate between commanding a first subset of actuators and a second subset of actuators each time the orientation signal is indicative of a neutral position. The control system may include a position sensor and a compliance sensor and may command at least one actuator based on a combination of positional control using the position sensor and force control using the compliance sensor.
    Type: Application
    Filed: May 1, 2023
    Publication date: January 11, 2024
    Inventors: Dirk Albertus van der Merwe, Gregory R. Lanier, John M. Kerwin, Gerald M. Guay, N. Christopher Perry, Susan D. Dastous
  • Patent number: 11867354
    Abstract: A clamp includes a fixed gripper, a moveable gripper, a driven member, an actuator, and first and second tracks. The driven member is configured to slide within the first and second tracks. The moveable gripper is operatively coupled to the driven member. The actuator is configured to move the driven member towards a first position to thereby move the moveable gripper towards the fixed gripper. The actuator is further configured to move the driven member towards a second position to thereby move the moveable gripper away from the fixed gripper.
    Type: Grant
    Filed: May 20, 2022
    Date of Patent: January 9, 2024
    Assignee: DEKA Products Limited Partneship
    Inventors: Larry B. Gray, Thomas A. Friedrich, Erik N. Sabin, John M. Kerwin, Richard J. Lanigan