Patents by Inventor G. Kent Archibald

G. Kent Archibald 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).

  • Publication number: 20030208127
    Abstract: The present invention is a method for calculating blood pressure of an artery having a pulse. The method includes applying a varying pressure to the artery. Pressure waveforms are sensed to produce pressure waveform data. Waveform parameters are derived from the sensed pressure waveform data. Blood pressure is then determined using the derived parameters.
    Type: Application
    Filed: May 16, 2003
    Publication date: November 6, 2003
    Applicant: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 6589185
    Abstract: The present invention is a method for calculating blood pressure of an artery having a pulse. The method includes applying a varying pressure to the artery. Pressure waveforms are sensed to produce pressure waveform data. Waveform parameters are derived from the sensed pressure waveform data. Blood pressure is then determined using the derived parameters.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: July 8, 2003
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 6340349
    Abstract: A hand-held non-invasive blood pressure measurement device allows a varying pressure to be applied to an artery while pressure waveforms are sensed to produce pressure waveform data. Waveform parameters are derived from the sensed pressure waveform data. Blood pressure is then determined using the derived parameters. The user is guided or prompted to apply the varying pressure through audible and visual feedback.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: January 22, 2002
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 6245022
    Abstract: A non-invasive blood pressure sensor includes a first fluid filled sensing chamber having a diaphragm. A first transducer is fluidly coupled to the first sensing chamber to sense fluid pressure within the first chamber. A flexible body conformable wall surrounds the sensing chamber. The wall applies force to the artery while preventing pressure in a direction generally parallel to the artery from being applied to the sensing chamber. The flexible body conformable wall includes a second fluid filled chamber. A second transducer fluidly coupled to the second chamber senses fluid pressure within the second chamber. As varying pressure is applied to the artery pressure waveforms are sensed by the first transducer. Using output signals of the first and second transducers, the sensed pressure waveform data is analyzed to derive waveform parameters from which blood pressure values are derived. The effects of motion artifacts are reduced by the use of signals from both the first and second transducers.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: June 12, 2001
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 6159157
    Abstract: A blood pressure measurement device with a sensor locator for placing a non-invasive blood pressure measurement device over an underlying artery, the sensor locator having a plurality of extending fingers spaced from each other coupled to the non-invasive blood pressure measurement device.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: December 12, 2000
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 6132382
    Abstract: A non-invasive blood pressure sensor includes a first fluid filled sensing chamber having a diaphragm. A first transducer is fluidly coupled to the first sensing chamber to sense fluid pressure within the first chamber. A flexible body conformable wall surrounds the sensing chamber. The wall applies force to the artery while preventing pressure in a direction generally parallel to the artery from being applied to the sensing chamber. The flexible body conformable wall includes a second fluid filled chamber. A second transducer fluidly coupled to the second chamber sensing fluid pressure within the second chamber. As varying pressure is applied to the artery pressure waveforms are sensed by the first transducer. Using output signals of the first and second transducers, the sensed pressure waveform data is analyzed to derive waveform parameters from which blood pressure values are derived. The effects of motion artifacts are reduced by the use of signals from both the first and second transducers.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: October 17, 2000
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 6099477
    Abstract: The present invention is a method for calculating blood pressure of an artery having a pulse. The method includes applying a varying pressure to the artery. Pressure waveforms are sensed to produce pressure waveform data. Waveform parameters are derived from the sensed pressure waveform data. Blood pressure is then determined using the derived parameters.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: August 8, 2000
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 5941828
    Abstract: A hand-held non-invasive blood pressure measurement device allows a varying pressure to be applied to an artery while pressure waveforms are sensed to produce pressure waveform data. Waveform parameters are derived from the sensed pressure waveform data. Blood pressure is then determined using the derived parameters. The user is guided or prompted to apply the varying pressure through audible and visual feedback.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: August 24, 1999
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 5938618
    Abstract: The present invention is a method for locating a sensor over an underlying artery having a blood pulse. The sensor is positioned at a plurality of locations above a known appoximate location of the artery while applying a constant hold down pressure to the artery. The sensor is finally positioned at the location which exhibits the largest maximum pressure ampltiude.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: August 17, 1999
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 5832924
    Abstract: The present invention is a method for locating a sensor over an underlying artery having a blood pulse. The sensor is positioned at a plurality of locations above a known approximate location of the artery while applying a constant hold down pressure to the artery. The sensor is finally positioned at the location which exhibits the largest maximum pressure ampltiude.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: November 10, 1998
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 5797850
    Abstract: The present invention is a method and apparatus for calculating blood pressure of an artery having a pulse. The method includes applying a varying pressure to the artery. Pressure waveforms are sensed to produce pressure waveform data. Waveform parameters are derived from the sensed pressure waveform data. Blood pressure is then determined using the derived parameters. The apparatus is a blood pressure monitoring device which includes pressure means for applying a varying pressure to the artery so that the artery exhibits pressure data, sensing means for sensing the pressure data, signal producing means connected to the sensing means for producing output signals corresponding to the sensed pressure data and processing means for receiving the output signals from the signal producing means, for deriving a plurality of parameters using sensed pressures and for determining a blood pressure value using the derived parameters.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: August 25, 1998
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 5722414
    Abstract: A sensor having a sensing surface for sensing blood pressure within an underlying artery of a patient includes a transducer, a sidewall, a flexible diaphragm and a fluid coupling medium. The sidewall is distinct from transducer and supports the transducer above the underlying artery. The fluid coupling medium is coupled between the sensing surface of transducer and the flexible diaphragm and transmits blood pressure pulses within the underlying artery from the flexible diaphragm to the sensing surface of transducer. In one embodiment, the fluid coupling medium is isolated from sidewall.
    Type: Grant
    Filed: April 19, 1996
    Date of Patent: March 3, 1998
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 5649542
    Abstract: A sensor for sensing blood pressure within an underlying artery as the underlying artery is compressed includes a transducer and a compressible sidewall. The transducer senses blood pressure of blood pressure pulses as the pulses travel beneath the sensor. As each blood pressure pulses crosses an edge of the sensor, each pulse exerts a force on the sensor in a direction parallel to the underlying artery. Tissue surrounding the underlying artery also exerts a force. The compressible sidewall is distant from the transducer and engages tissue surrounding the underlying artery. The compressible side wall neutralizes the force exerted by the tissue surrounding the underlying artery and dampens the force parallel to the underlying artery so that a substantially zero pressure gradient exists across the transducer.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: July 22, 1997
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 5642733
    Abstract: A blood pressure sensor locator for locating a blood pressure sensing device over an underlying artery of a patient includes a base, an adhesive on an underside of the base for coupling the base to an anatomy of the patient and a guide supported by the base and configured for contacting the sensing device to locate an aligned sensing device over the underlying artery.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: July 1, 1997
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Orland H. Danielson, Roger J. Woessner
  • Patent number: 5640964
    Abstract: A device for supporting a sensing surface above an underlying artery of a patient includes a hold down assembly and a sensor interface pivotally coupled to the hold down assembly. The hold down assembly is secured at a spaced position relative to the underlying artery of the patient. The sensor interface includes a flexible diaphragm, a compressible side wall and a mount. The flexible diaphragm has an active portion for transmitting blood pressure pulses of the underlying artery. The compressible side wall encircles the active portion and has a top end and a bottom end. The bottom end is secured to the flexible diaphragm. The mount is coupled to the top end of the compressible side wall. The mount has a connection located below the top end of the compressible side wall for receiving a movable member of the hold down assembly so that the movable member may be pivotally coupled to the sensor below the top end of the compressible side wall.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: June 24, 1997
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 5450852
    Abstract: A transducer having a sensing surface for sensing blood pressure within an underlying artery of a patient includes a transducer, a sidewall, a flexible diaphragm and a fluid coupling medium. The sidewall supports the transducer above the underlying artery. The flexible diaphragm is spaced from the sensing surface of the transducer. The fluid coupling medium is coupled between the sensing surface of the transducer and the flexible diaphragm and transmits blood pressure pulses within the underlying artery from the flexible diaphragm to the sensing surface of the transducer. The fluid coupling medium is isolated from the sidewall so that forces are not transmitted from the sidewall through the fluid coupling medium to the transducer.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: September 19, 1995
    Assignee: Medwave, Inc.
    Inventors: G. Kent Archibald, Timothy G. Curran, Orland H. Danielson, Marius O. Poliac, Roger C. Thede
  • Patent number: 5154704
    Abstract: An apparatus clamps an intravenous (IV) tube used in an infusion device to control flow rate of IV fluid in the IV tube. A tube clip has first and second pinching members biased for exerting a pinching force on the IV tube. The first and second pinching members are positionable for insertion of the IV tube between them. A pair of clamping members are coupled to a clamp housing and are positionable for insertion of a portion of the tube clip between the pair of clamping members. The pair of clamping members operably engage the tube clip to variably offset the pinching force based on relative position of the pair of clamping members with respect to one another. A manual adjustment mechanism is coupled to at least one of the pair of clamping members and is used to manually adjust the relative position of the pair of clamping members relative to one another to set a desired flow rate in the IV tube.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: October 13, 1992
    Inventor: G. Kent Archibald
  • Patent number: 4714463
    Abstract: A piggyback IV administration system uses a solenoid actuated sequence valve to control the flow of fluid from a pair of IV fluid sources to the inlet of an IV pump or controller. The sequence valve pinches off a first tube while allowing fluid to flow through the second tube and then, in response to a control signal, changes state so that the second tube is pinched off and fluid can flow through the first tube unimpeded. Improper placement of the first and second tubes within the sequence valve during setup is prevented.
    Type: Grant
    Filed: November 15, 1985
    Date of Patent: December 22, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: G. Kent Archibald, Frank A. Slaker
  • Patent number: 4705506
    Abstract: A multiple solution IV administration system includes a plurality of IV fluid sources which are connected by flexible tubing to the inlet of an IV pump. A sequence valve suspended from the tubing selectively pinches off all but one tube so that one source at a time is connected to the inlet. The sequence valve is controlled as a function of the accumulated volume pumped by the pump for each fluid and a stored volume limit for that fluid. When the accumulated volume of one IV fluid reaches its volume limit, the sequence valve is changed to connect a different source to the inlet of the IV pump. The desired volume limits and rates are entered manually and are checked automatically to protect against setup errors.
    Type: Grant
    Filed: November 14, 1985
    Date of Patent: November 10, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: G. Kent Archibald
  • Patent number: 4673389
    Abstract: A piggyback IV administration system uses a solenoid actuated sequence valve to control the flow of fluid from a pair of IV fluid sources to the inlet of an IV pump or controller. The sequence valve pinches off a first tube while allowing fluid to flow through the second tube and then, in response to a control signal, changes state so that the second tube is pinched off and fluid can flow through the first tube unimpeded.
    Type: Grant
    Filed: November 29, 1984
    Date of Patent: June 16, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: G. Kent Archibald, Frank A. Slaker