Patents by Inventor Andrew C. Sheffield

Andrew C. Sheffield 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: 20240009407
    Abstract: Embodiments disclosed herein are directed to access devices configured to access a subcutaneous medical device. The access device can include a needle supported by a needle hub and in some embodiments a housing slidably engaged therewith and configured to align the needle axis at a predetermined angle. The access device can include an indicator system configured to detect when the needle is correctly aligned with a target window of a port. This can allow for smaller, lower profile ports with smaller target windows while mitigating mis sticks. The indicator system can be contained within the access device little or no increase to the overall size of the access device. The indicator system can employ various modalities including capacitance, induction, magnetic, thermal, acoustic, or radio frequency (RF).
    Type: Application
    Filed: November 24, 2020
    Publication date: January 11, 2024
    Inventors: Ericka J. Prechtel, Andrew C. Sheffield, Brenda L. F. Fedor
  • Publication number: 20210386919
    Abstract: A catheter (100) for treating hypervolemia in a patient includes a luminal ingress (112) joined to a luminal egress (114) at a distal end portion (116) of the catheter having a closed distal end (102). The distal end portion is configured to at least temporarily reside within a vessel of the patient, the distal end portion including a semipermeable membrane. The luminal ingress is designed to convey an influent having a first osmotic concentration to the distal end portion. The semipermeable membrane is configured to pass blood-borne water from the vessel into the distal portion. The blood-borne water is absorbed by the influent to produce an effluent having a second osmotic concentration lower than the first osmotic concentration. Systems (200) with the catheter and methods for treating hypervolemia are also disclosed.
    Type: Application
    Filed: October 24, 2019
    Publication date: December 16, 2021
    Inventors: Murtaza Y. Amin, Nathan Gooch, Ericka J. Prechtel, Andrew C. Sheffield, Prabir Roy-Chaudhury
  • Publication number: 20180229003
    Abstract: An insertion tool for inserting a catheter into a patient's body is disclosed. The insertion tool unifies needle insertion, guidewire advancement, and catheter insertion in a single device. In one embodiment, the insertion tool comprises a housing in which at least a portion of the catheter is initially disposed, a hollow needle distally extending from the housing with at least a portion of the catheter pre-disposed over the needle, and a guidewire pre-disposed within the needle. A guidewire advancement assembly is also included for selectively advancing the guidewire distally past a distal end of the needle in preparation for distal advancement of the catheter. In one embodiment a catheter advancement assembly is also included for selectively advancing the catheter into the patient. Each advancement assembly can include a slide or other actuator that enables a user to selectively advance the desired component. Guidewire and catheter locking systems are also disclosed.
    Type: Application
    Filed: April 12, 2018
    Publication date: August 16, 2018
    Inventors: Daniel B. Blanchard, Rex A. Ribelin, Thomas S. Russell, Jason R. Stats, Joshua D. Sherwood, Jay A. Muse, Andrew C. Sheffield, Matthew C. Rich
  • Publication number: 20180229004
    Abstract: An insertion tool for inserting a catheter into a patient's body is disclosed. The insertion tool unifies needle insertion, guidewire advancement, and catheter insertion in a single device. In one embodiment, the insertion tool comprises a housing in which at least a portion of the catheter is initially disposed, a hollow needle distally extending from the housing with at least a portion of the catheter pre-disposed over the needle, and a guidewire pre-disposed within the needle. A guidewire advancement assembly is also included for selectively advancing the guidewire distally past a distal end of the needle in preparation for distal advancement of the catheter. In one embodiment a catheter advancement assembly is also included for selectively advancing the catheter into the patient. Each advancement assembly can include a slide or other actuator that enables a user to selectively advance the desired component. Guidewire and catheter locking systems are also disclosed.
    Type: Application
    Filed: April 12, 2018
    Publication date: August 16, 2018
    Inventors: Daniel B. Blanchard, Rex A. Ribelin, Thomas S. Russell, Jason R. Stats, Joshua D. Sherwood, Jay A. Muse, Andrew C. Sheffield, Matthew C. Rich
  • Patent number: 9950139
    Abstract: An insertion tool for inserting a catheter into a patient's body is disclosed. The insertion tool unifies needle insertion, guidewire advancement, and catheter insertion in a single device. In one embodiment, the insertion tool comprises a housing in which at least a portion of the catheter is initially disposed, a hollow needle distally extending from the housing with at least a portion of the catheter pre-disposed over the needle, and a guidewire pre-disposed within the needle. A guidewire advancement assembly is also included for selectively advancing the guidewire distally past a distal end of the needle in preparation for distal advancement of the catheter. In one embodiment a catheter advancement assembly is also included for selectively advancing the catheter into the patient. Each advancement assembly can include a slide or other actuator that enables a user to selectively advance the desired component. Guidewire and catheter locking systems are also disclosed.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: April 24, 2018
    Assignee: C. R. Bard, Inc.
    Inventors: Daniel B. Blanchard, Rex A. Ribelin, Thomas S. Russell, Jason R. Stats, Joshua D. Sherwood, Jay A. Muse, Andrew C. Sheffield, Matthew C. Rich
  • Publication number: 20180028780
    Abstract: An insertion tool for inserting a catheter into a patient's body is disclosed. The insertion tool unifies needle insertion, guidewire advancement, and catheter insertion in a single device. In one embodiment, the insertion tool comprises a housing in which at least a portion of the catheter is initially disposed, a hollow needle distally extending from the housing with at least a portion of the catheter pre-disposed over the needle, and a guidewire pre-disposed within the needle. A guidewire advancement assembly is also included for selectively advancing the guidewire distally past a distal end of the needle in preparation for distal advancement of the catheter. In one embodiment a catheter advancement assembly is also included for selectively advancing the catheter into the patient. Each advancement assembly can include a slide or other actuator that enables a user to selectively advance the desired component. Guidewire and catheter locking systems are also disclosed.
    Type: Application
    Filed: October 6, 2017
    Publication date: February 1, 2018
    Inventors: Daniel B. Blanchard, Rex A. Ribelin, Thomas S. Russell, Jason R. Stats, Joshua D. Sherwood, Jay A. Muse, Andrew C. Sheffield, Matthew C. Rich
  • Publication number: 20150231364
    Abstract: An insertion tool for inserting a catheter into a patient's body is disclosed. The insertion tool unifies needle insertion, guidewire advancement, and catheter insertion in a single device. In one embodiment, the insertion tool comprises a housing in which at least a portion of the catheter is initially disposed, a hollow needle distally extending from the housing with at least a portion of the catheter pre-disposed over the needle, and a guidewire pre-disposed within the needle. A guidewire advancement assembly is also included for selectively advancing the guidewire distally past a distal end of the needle in preparation for distal advancement of the catheter. In one embodiment a catheter advancement assembly is also included for selectively advancing the catheter into the patient. Each advancement assembly can include a slide or other actuator that enables a user to selectively advance the desired component. Guidewire and catheter locking systems are also disclosed.
    Type: Application
    Filed: May 1, 2015
    Publication date: August 20, 2015
    Inventors: Daniel B. Blanchard, Rex A. Ribelin, Thomas S. Russell, Jason R. Stats, Joshua D. Sherwood, Jay A. Muse, Andrew C. Sheffield, Matthew C. Rich