Patents by Inventor Dale Nelson

Dale Nelson 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: 5935112
    Abstract: A hemostasis valve which includes a tubular body having a lumen therethrough and an elongated housing attached to the tubular body. The body has a recess formed in one end. The housing has a longitudinal bore at one end and a compression chamber formed at another end which communicates with the bore. A resilient seal which comprises a cone-shaped membrane portion disposed in the recess for substantially blocking and controlling the loss of body fluids from the lumen. A compressible second seal for selectively opening and closing the bore in response to a compressive force is disposed in the compression chamber. The compressible seal has a longitudinal first passageway that communicates with the bore and a raised annular portion which serves as a selective opening to the bore. The compressible seal responds to compressive forces so as to reduce or increase the size of the opening provided by the raised annular portion to selectively seal or unseal the bore.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: August 10, 1999
    Inventors: Brian W. Stevens, Arlin Dale Nelson
  • Patent number: 5797886
    Abstract: A novel catheter apparatus for use in delivering an anesthetic agent or other fluid medicament to the portion of subcutaneous tissue through which a catheter device has been inserted into a patient, thereby allowing the catheter device to be retracted without causing pain or discomfort to the patient. The catheter device has an indwelling cannula adapted for insertion through subcutaneous tissue into a patient's body. A sheath is selectively disposed about the cannula so as to be positioned within the subcutaneous tissue once the cannula has been inserted into the body. The sheath may include a plurality of longitudinal bores which act as a lumen to provide fluid medicament to delivery holes on the outside of the sheath. The delivery holes permit the anesthetic agent or fluid medicament to be delivered to the subcutaneous tissue. A light permeable hub means may be used to maintain a fluid tight connection between the sheath means and a storage container for anesthetic agent or fluid medicament.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: August 25, 1998
    Assignee: Merit Medical Systems, Inc.
    Inventors: Robert Roth, Fred P. Lampropoulos, Jim Mottola, Arlin Dale Nelson, Jerrold L. Foote
  • Patent number: 5671529
    Abstract: A pulse oximeter sensor apparatus which is sealed against liquid penetration during its formation by overmolding, and methods for overmolding. The pulse oximeter sensor apparatus disclosed comprises a preform first section, oximeter sensor components, and an overmolded second section bonded to the preform first section during the overmolding process to form a liquid resistant seal comprising a mechanical bond of overlapping elements.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 30, 1997
    Assignee: Sensormedics Corporation
    Inventor: Dale Nelson
  • Patent number: 5665076
    Abstract: A novel catheter apparatus for use in delivering an anesthetic agent or other fluid medicament to the portion of subcutaneous tissue through which a catheter device has been inserted into a patient, thereby allowing the catheter device to be retracted without causing pain or discomfort to the patient. The catheter device has an indwelling cannula adapted for insertion through subcutaneous tissue into a patient's body. A helical sheath is formed from an elongate band that is wrapped around the cannula in a helical fashion so as to be capable of being positioned within the subcutaneous tissue once the cannula has been inserted into the body. The helical sheath has formed therein a lumen into which the anesthetic agent or other fluid medicament can be delivered via a hub that is connected to the proximal end of the helical sheath. The helical sheath has formed therein a plurality of delivery holes that form a fluid communication path with the lumen.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: September 9, 1997
    Assignee: Merit Medical Systems, Inc.
    Inventors: Robert Roth, Fred P. Lampropoulos, Jim Mottola, Arlin Dale Nelson, Jerrold L. Foote
  • Patent number: 5647860
    Abstract: A novel catheter apparatus for use in delivering an anesthetic agent or other fluid medicament to the portion of subcutaneous tissue through which a catheter device has been inserted into a patient, thereby allowing the catheter device to be retracted without causing pain or discomfort to the patient. The catheter device has an indwelling cannula adapted for insertion through subcutaneous tissue into a patient's body. A helical sheath is formed from an elongate band that is wrapped around the cannula in a helical fashion so as to be capable of being positioned within the subcutaneous tissue once the cannula has been inserted into the body. The helical sheath has formed therein a lumen into which the anesthetic agent or other fluid medicament can be delivered via a hub that is connected to the proximal end of the helical sheath. The helical sheath has formed therein a plurality of delivery holes that form a fluid communication path with the lumen.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: July 15, 1997
    Assignee: Merit Medical Systems, Inc.
    Inventors: Robert Roth, Fred P. Lampropoulos, Jim Mottola, Arlin Dale Nelson, Jerrold L. Foote
  • Patent number: 5647859
    Abstract: A novel catheter apparatus for use in delivering an anesthetic agent or other fluid medicament to the portion of subcutaneous tissue through which a catheter device has been inserted into a patient, thereby allowing the catheter device to be further manipulated or retracted without causing pain or discomfort to the patient. The catheter device has an indwelling cannula adapted for insertion through subcutaneous tissue into a patient's body. A cylindrical sleeve around the cannula can be positioned within the subcutaneous tissue once the cannula has been inserted into the body. The cylindrical sleeve has formed therein one or more lumens into which the anesthetic agent or other fluid medicament can be delivered via a hub that is connected to the proximal end of the cylindrical sleeve. The cylindrical sleeve has formed therein a plurality of delivery holes that form a fluid communication path with the one or more lumens.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: July 15, 1997
    Assignee: Merit Medical Systems, Inc.
    Inventors: Fred P. Lampropoulos, Jim Mottola, Arlin Dale Nelson, Jerrold L. Foote, Robert Roth
  • Patent number: 5425360
    Abstract: A pulse oximeter sensor apparatus which is sealed against liquid penetration during its formation by overmolding, and methods for overmolding. The pulse oximeter sensor apparatus disclosed comprises a preform first section, oximeter sensor components, and an overmolded second section bonded to the preform first section during the overmolding process to form a liquid resistant seal comprising a mechanical bond of overlapping elements.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: June 20, 1995
    Assignee: Sensormedics Corporation
    Inventor: Dale Nelson
  • Patent number: 5405334
    Abstract: A novel catheter apparatus for use in delivering an anesthetic agent or other fluid medicament to the portion of subcutaneous tissue through which a catheter device has been inserted into a patient, thereby allowing the catheter device to be retracted without causing pain or discomfort to the patient. The catheter device has an indwelling cannula adapted for insertion through subcutaneous tissue into a patient's body. A cylindrical sheath is placed on the cannula so as to be positioned within the subcutaneous tissue once the cannula has been inserted into the body. The cylindrical sheath has formed therein a lumen into which the anesthetic agent or other fluid medicament can be delivered via a hub that is disposed on the catheter apparatus. The cylindrical sheath has formed therein a plurality of one-way slit valves. The one-way slit valves permit the anesthetic agent or fluid medicament to be delivered to the surrounding subcutaneous tissue, and also prevent any bodily fluids from entering the lumen.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: April 11, 1995
    Assignee: Merit Medical Systems, Inc.
    Inventors: Robert Roth, Fred P. Lampropoulos, Jim Mottola, Arlin Dale Nelson, Jerrold L. Foote
  • Patent number: 5018311
    Abstract: A tape burnishing device presents aligned stretches of burnishing tape at each side of a rotating disk. Air nozzles at each side of the disk urge an elliptical pattern of the respective stretches of tape into contact with the disk. During burnishing the tape is stationary while the device is advanced to burnish the desired surface of the disk. The tape stretches, that are portions of a single tape, are positioned at an angle with respect to the radius of the disk and the device is advanced in a radial direction to optimize the burnishing action relative to the rotating disk surface. The tape is advanced between burnishing operations twice the dimension of use during a burnishing operation with the two operating locations out of phase to enable the single tape to advance past both burnishing locations while presenting an unused surface at each location and using the entire surface of the tape.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: May 28, 1991
    Assignee: International Business Machines Corporation
    Inventors: Gerald D. Malagrino, Jr., Dale A. Nelson
  • Patent number: 4859057
    Abstract: An oximeter apparatus especially adapted to reflectance oximetry includes a sensor having a red LED, an infrared LED and a photosensor resiliently mounted in a carrier to provide constant linear pressure characteristics. The LED's and photodetector are fixed to a flexible circuit board. The d.c. components of the reflectance signals are fed back to control the brightness of the LED's A.c. component signals from the photodetector are rejected in the determination of oxygen saturation when the red and infrared a.c. components differ by more than a determined amount. The difference between the maximum and minimum values of each pulse is employed in the determination of oxygen saturation, with two measurements being taken for each pulse.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: August 22, 1989
    Assignee: Lawrence Medical Systems, Inc.
    Inventors: Steve Taylor, Dale Nelson, Don Gorney