Patents by Inventor Nathan C. Griffith

Nathan C. Griffith 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: 11478321
    Abstract: Indicators for indicating the integrity of a seal of a sterilization container are provided. For example, a seal indicator may indicate whether the container is sufficiently sealed to prevent an ingress of contaminants into the container. If the container is sufficiently sealed, the seal indicator is in one state and displays a first indicium, and if the sterilization container is not sufficiently sealed, the seal indicator is in another state and displays a second indicium. Thus, the seal indicator undergoes a visible change in state when the sterilization container transitions from unsealed to sealed, such that the user may be assured that the container is properly sealed to maintain sterility of the articles post-sterilization. Further, the seal indicator undergoes a visible change in state if the seal is subsequently broken, to signal to the user that the seal and the sterility of the container interior has been compromised.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: October 25, 2022
    Assignee: O&M Halyard, Inc.
    Inventors: Ruoya Wang, Anthony Stephen Spencer, Kun-Chi Wu, Tracy J. White, Edward B. Madsen, Justin J. Coker, Nathan C. Griffith
  • Patent number: 11229543
    Abstract: Devices for insertion into a stoma formed in a patient's body are provided, comprising a tube having distal and proximal ends and defining a path for movement of waste. To retain the device in the stoma and seal the stoma, the tube includes a retention mechanism located on the distal end and/or a sealing mechanism extending along a length of the tube between the proximal and distal ends. Collection apparatus for collecting waste from a patient's body also are provided, comprising a waste pouch and a connector for connecting the collection apparatus to a device inserted into a stoma. Additionally, waste collection systems for collecting waste from a patient's body are provided, comprising a tube for insertion into a stoma and a waste pouch. Each system may comprise a separate tube and waste pouch or the tube and waste pouch may be formed as an integral, inseparable component.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: January 25, 2022
    Assignee: Avent, Inc.
    Inventors: Joseph A. Cesa, Nathan C. Griffith, Benone Tarcau, James Zacha, Donald McMichael
  • Patent number: 11191662
    Abstract: Devices for insertion into a stoma formed in a patient's body are provided, comprising a tube having distal and proximal ends and defining a path for movement of waste. To retain the device in the stoma and seal the stoma, the tube includes a retention mechanism located on the distal end and/or a sealing mechanism extending along a length of the tube between the proximal and distal ends. Collection apparatus for collecting waste from a patient's body also are provided, comprising a waste pouch and a connector for connecting the collection apparatus to a device inserted into a stoma. Additionally, waste collection systems for collecting waste from a patient's body are provided, comprising a tube for insertion into a stoma and a waste pouch. Each system may comprise a separate tube and waste pouch or the tube and waste pouch may be formed as an integral, inseparable component.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: December 7, 2021
    Assignee: Avent, Inc.
    Inventors: Joseph A. Cesa, Nathan C. Griffith, Benone Tarcau, James Zacha, Donald McMichael
  • Publication number: 20200039719
    Abstract: Indicators for indicating the integrity of a seal of a sterilization container are provided. For example, a seal indicator may indicate whether the container is sufficiently sealed to prevent an ingress of contaminants into the container. If the container is sufficiently sealed, the seal indicator is in one state and displays a first indicium, and if the sterilization container is not sufficiently sealed, the seal indicator is in another state and displays a second indicium. Thus, the seal indicator undergoes a visible change in state when the sterilization container transitions from unsealed to sealed, such that the user may be assured that the container is properly sealed to maintain sterility of the articles post-sterilization. Further, the seal indicator undergoes a visible change in state if the seal is subsequently broken, to signal to the user that the seal and the sterility of the container interior has been compromised.
    Type: Application
    Filed: July 29, 2019
    Publication date: February 6, 2020
    Inventors: Ruoya Wang, Anthony Stephen Spencer, Kun-Chi Wu, Tracy J. White, Edward B. Madsen, Justin J. Coker, Nathan C. Griffith
  • Patent number: 10327997
    Abstract: A connector for coupling to a base of an indwelling device equipped with a circular hub having a radius, a top surface, a side surface, and a circumferential recess defined in the side surface. The connector has a resilient assembly including a plurality of release buttons extending from the resilient assembly and may include a conduit defining a fluid pathway through the connector. Each release button has a finger contact zone and a catch. The catch is configured to releasably engage the circumferential recess. The connector is coupled by positioning the connector on the circular hub and depressing the connector until the catches engage the circumferential recess such that the connector is configured to rotate completely about the circular hub. The connector is decoupled from the hub by pressing the release buttons to reversibly displace the respective catches radially to disengage from the circumferential recess.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: June 25, 2019
    Assignee: Avent, Inc.
    Inventors: Nathan C. Griffith, Donald J. McMichael, John A. Rotella, Scott M. Teixeira
  • Patent number: 10322067
    Abstract: A stoma dilation device that includes a tubular support defining a continuous pathway through the device; an inflatable dilation balloon located on the tubular support, the inflatable dilation balloon including a dilation region forming a first portion of the device and a retention region forming a second portion of the device; and a balloon inflation lumen. The retention region of the balloon is configured to have a diameter upon full, unrestrained inflation that is greater than the diameter of the dilation region.
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: June 18, 2019
    Assignee: Avent, Inc.
    Inventors: Kok-Ming Tai, Donald J. McMichael, John A. Rotella, Nathan C. Griffith, Emily A. Reichart, Courtney E. Rowe, Steve A. Holley, Edward B. Madsen
  • Publication number: 20190060104
    Abstract: Devices for insertion into a stoma formed in a patient's body are provided, comprising a tube having distal and proximal ends and defining a path for movement of waste. To retain the device in the stoma and seal the stoma, the tube includes a retention mechanism located on the distal end and/or a sealing mechanism extending along a length of the tube between the proximal and distal ends. Collection apparatus for collecting waste from a patient's body also are provided, comprising a waste pouch and a connector for connecting the collection apparatus to a device inserted into a stoma. Additionally, waste collection systems for collecting waste from a patient's body are provided, comprising a tube for insertion into a stoma and a waste pouch. Each system may comprise a separate tube and waste pouch or the tube and waste pouch may be formed as an integral, inseparable component.
    Type: Application
    Filed: November 4, 2016
    Publication date: February 28, 2019
    Inventors: Joseph A. Cesa, Nathan C. Griffith, Benone Tarcau, James Zacha, Donald McMichael
  • Publication number: 20190060105
    Abstract: Devices for insertion into a stoma formed in a patient's body are provided, comprising a tube having distal and proximal ends and defining a path for movement of waste. To retain the device in the stoma and seal the stoma, the tube includes a retention mechanism located on the distal end and/or a sealing mechanism extending along a length of the tube between the proximal and distal ends. Collection apparatus for collecting waste from a patient's body also are provided, comprising a waste pouch and a connector for connecting the collection apparatus to a device inserted into a stoma. Additionally, waste collection systems for collecting waste from a patient's body are provided, comprising a tube for insertion into a stoma and a waste pouch. Each system may comprise a separate tube and waste pouch or the tube and waste pouch may be formed as an integral, inseparable component.
    Type: Application
    Filed: November 4, 2016
    Publication date: February 28, 2019
    Inventors: Joseph A. Cesa, Nathan C. Griffith, Benone Tarcau, James Zacha, Donald McMichael
  • Publication number: 20170189274
    Abstract: A connector for coupling to a base of an indwelling device equipped with a circular hub having a radius, a top surface, a side surface, and a circumferential recess defined in the side surface. The connector has a resilient assembly including a plurality of release buttons extending from the resilient assembly and may include a conduit defining a fluid pathway through the connector. Each release button has a finger contact zone and a catch. The catch is configured to releasably engage the circumferential recess. The connector is coupled by positioning the connector on the circular hub and depressing the connector until the catches engage the circumferential recess such that the connector is configured to rotate completely about the circular hub. The connector is decoupled from the hub by pressing the release buttons to reversibly displace the respective catches radially to disengage from the circumferential recess.
    Type: Application
    Filed: February 8, 2017
    Publication date: July 6, 2017
    Inventors: Nathan C. Griffith, Donald J. McMichael, John A. Rotella, Scott M. Teixeira
  • Publication number: 20170135908
    Abstract: A stoma dilation device that includes a tubular support defining a continuous pathway through the device; an inflatable dilation balloon located on the tubular support, the inflatable dilation balloon including a dilation region forming a first portion of the device and a retention region forming a second portion of the device; and a balloon inflation lumen. The retention region of the balloon is configured to have a diameter upon full, unrestrained inflation that is greater than the diameter of the dilation region.
    Type: Application
    Filed: October 13, 2016
    Publication date: May 18, 2017
    Inventors: Kok-Ming Tai, Donald J. McMichael, John A. Rotella, Nathan C. Griffith, Emily A. Reichart, Courtney E. Rowe, Steve A. Holley, Edward B. Madsen
  • Patent number: 9585814
    Abstract: A connector for coupling to a base of an indwelling device equipped with a circular hub having a radius, a top surface, a side surface, and a circumferential recess defined in the side surface. The connector has a resilient assembly including a plurality of release buttons extending from the resilient assembly and may include a conduit defining a fluid pathway through the connector. Each release button has a finger contact zone and a catch. The catch is configured to releasably engage the circumferential recess. The connector is coupled by positioning the connector on the circular hub and depressing the connector until the catches engage the circumferential recess such that the connector is configured to rotate completely about the circular hub. The connector is decoupled from the hub by pressing the release buttons to reversibly displace the respective catches radially to disengage from the circumferential recess.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: March 7, 2017
    Assignee: Avent, Inc.
    Inventors: Nathan C. Griffith, Donald J. McMichael, John A. Rotella, Scott M. Teixeira
  • Patent number: 9381338
    Abstract: A connector for coupling to a base of medical device equipped with a circular hub having a circumferential recess. The connector includes a cap having a top surface, a bottom surface, a central region, and a circumferential region. The cap defines at least two slots extending from the circumferential region towards the central region, the slots defining the cap into at least one lobe. The at least one lobe has an outward projecting lift tab and an inward projecting catch. Positioning the connector on the circular hub and depressing the connector engage the catch with the circumferential recess of the circular hub so the connector can rotate completely about the circular hub. Lifting the one lift tab to reversibly displace the lobe and its respective catch radially to disengage from the circumferential recess decouples the connector.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: July 5, 2016
    Assignee: Avent, Inc.
    Inventors: Nathan C. Griffith, Donald J. McMichael, John A. Rotella, Scott M. Teixeira
  • Patent number: 9364652
    Abstract: A connector for coupling to a base of medical device equipped with a circular hub having a circumferential recess. The connector includes a cap having a top surface, a bottom surface, a central region, and a circumferential region. The cap defines at least two pairs of slots extending from the circumferential region towards the central region dividing the cap into at least two fixed lobes and at least two resilient lobes. Each resilient lobe has an outward projecting lift tab, an inward projecting catch, and at least a resilient region. Positioning the connector on the circular hub and pressing the connector engage the catches with the circumferential recess of the circular hub so the connector can rotate completely about the circular hub. Lifting at least one lift tab to reversibly displace the resilient lobe and its respective catch radially to disengage from the circumferential recess decouples the connector.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: June 14, 2016
    Assignee: Avent, Inc.
    Inventors: Nathan C. Griffith, Donald J. McMichael, John A. Rotella, Scott M. Teixeira
  • Patent number: 9339442
    Abstract: A stoma dilation device that includes a tubular support defining a continuous pathway through the device; at least one inflatable dilation balloon and at least one inflatable retention balloon located on the tubular support; and inflation lumens for each balloon. The inflatable dilation balloon forms at least a first portion of the device and the inflatable retention balloon forms at least a second portion of the device. The inflatable retention balloon is configured to have a diameter upon full, unrestrained inflation that is greater than the largest diameter of the inflatable dilation balloon upon inflation.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: May 17, 2016
    Assignee: Avent, Inc.
    Inventors: Kok-Ming Tai, Donald J. McMichael, John A. Rotella, Nathan C. Griffith, Emily A. Reichart, Courtney E. Rowe, Steven A. Holley, Edward B. Madsen
  • Patent number: 9034455
    Abstract: A core-pin assembly composed of a primary core-pin and at least one secondary core-pin. The primary core-pin has a primary core-pin body defining at least one element for coupling with a mating end of at least one secondary core-pin. The secondary core-pin has a mating end and a secondary core-pin body. The mating end is configured to fit with the element defined in the primary core-pin body such that the primary core-pin and the secondary core-pin(s) reversibly join together to form a branching structure. The assembly may further include at least one tertiary core-pin and the secondary core-pin body may define at least one element for coupling with a mating end of at least one tertiary core-pin. The mating end of the tertiary core pin is configured to fit with the secondary core-pin body such that the primary core-pin, secondary and tertiary core-pin(s) reversibly join together forming a branching structure.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: May 19, 2015
    Assignee: AVENT, INC.
    Inventors: Michael A. Kenowski, Nathan C. Griffith, Donald J. McMichael, John A. Rotella
  • Patent number: 9033930
    Abstract: An enteral feeding device having an improved base adapted to be deployed outside the human body and a tube which is adapted to be deployed within a lumen or cavity of the body by insertion through a stoma from outside the body is disclosed. The base of the device has a recess directly surrounding at least a portion of the proximal end of the tube to permit increase air flow and minimize contact with the tissue immediately surrounding the stoma to facilitate tissue wellness and reduce patient side effects due to moisture build-up, skin irritation and granulation of the stoma tissue.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: May 19, 2015
    Assignee: Avent, Inc.
    Inventors: Nathan C. Griffith, Donald J. McMichael, John A. Rotella
  • Patent number: 8795360
    Abstract: There is provided a mechanism for gently detaching a loading catheter from a tracheostomy tube once the tube is placed in the trachea of a patient. After dilating the trachea, a loading catheter is inserted into a tracheostomy tube with which it desirably engages. Once the loading catheter and tracheostomy tube are attached to each other, the entire unit is passed through the stoma until the flange of the tracheostomy tube is in contact with the throat. The loading catheter may then be removed by rotating or twisting the loading catheter handle. The loading catheter and tracheostomy tube have a cam-action mechanism that gently forces the two parts apart as they are rotated relative to each other. This “cam action” disengagement allows for the removal of the loading catheter without subjecting the trachea or throat to undue pressure or forces that might cause trauma or increase recovery time. Other accessories like cannulas and obturators may attach and detach from the tracheostomy tube in a like manner.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: August 5, 2014
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Sam C. Chan, Nathan C. Griffith, Michael A. Kenowski, James F. Schumacher
  • Publication number: 20140155866
    Abstract: A connector for coupling to a base of medical device equipped with a circular hub having a circumferential recess. The connector includes a cap having a top surface, a bottom surface, a central region, and a circumferential region. The cap defines at least two slots extending from the circumferential region towards the central region, the slots defining the cap into at least one lobe. The at least one lobe has an outward projecting lift tab and an inward projecting catch. Positioning the connector on the circular hub and depressing the connector engage the catch with the circumferential recess of the circular hub so the connector can rotate completely about the circular hub. Lifting the one lift tab to reversibly displace the lobe and its respective catch radially to disengage from the circumferential recess decouples the connector.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicant: KIMBERLY-CLARK WORLDWIDE, INC.
    Inventors: Nathan C. Griffith, Donald J. McMichael, John A. Rotella, Scott M. Teixeira
  • Publication number: 20140155839
    Abstract: A connector for coupling to a base of medical device equipped with a circular hub having a circumferential recess. The connector includes a cap having a top surface, a bottom surface, a central region, and a circumferential region. The cap defines at least two pairs of slots extending from the circumferential region towards the central region dividing the cap into at least two fixed lobes and at least two resilient lobes. Each resilient lobe has an outward projecting lift tab, an inward projecting catch, and at least a resilient region. Positioning the connector on the circular hub and pressing the connector engage the catches with the circumferential recess of the circular hub so the connector can rotate completely about the circular hub. Lifting at least one lift tab to reversibly displace the resilient lobe and its respective catch radially to disengage from the circumferential recess decouples the connector.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicant: KIMBERLY-CLARK WORLDWIDE, INC.
    Inventors: Nathan C. Griffith, Donald J. McMichael, John A. Rotella, Scott M. Teixeira
  • Patent number: D751193
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: March 8, 2016
    Assignee: Avent, Inc
    Inventors: Nathan C. Griffith, Donald J. McMichael, John A. Rotella