Patents by Inventor William T. Fisher

William T. Fisher 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: 20240101951
    Abstract: Disclosed herein are devices and methods for processing biologic tissues, such as adipose tissue or whole blood, via centrifugation. The devices comprise a rotatable chamber having a first outlet, a tube connected or connectable to the first outlet, a collection container in fluid communication with the tube; and a drive unit configured to rotate the rotatable chamber about the axis. The device is operable such that a sample of biologic tissue present in the rotatable chamber can be stratified into at least two constituent layers as a function of the differing specific gravities of the constituents, at least one of the constituent layers being dischargeable from the rotatable chamber via the tube and into the collection container.
    Type: Application
    Filed: December 9, 2021
    Publication date: March 28, 2024
    Inventors: William T. FISHER, Amit DEKA
  • Publication number: 20230293214
    Abstract: Disclosed are cable fixation devices. The fixation devices are configured to keep tension in a polymer cable to secure a fracture or for other medical uses. In an embodiment, a fixation device for securing a fracture comprises a body and a piercing element, wherein the fixation device is configured to pierce a polymer cable arranged in the body by engaging the piercing element. In an embodiment, the fixation device further comprises a retensioning member, which may be operated to increase tension in the polymer cable after the polymer has been pierced by the piecing element. In an embodiment, the polymer cable comprises a braid or a yarn.
    Type: Application
    Filed: May 18, 2023
    Publication date: September 21, 2023
    Inventors: William T. FISHER, Dennis M. SAURO, Timothy O'NEIL
  • Patent number: 11660100
    Abstract: Disclosed are radially expanding debridement tools configured to pass through an access channel present in a first tissue of a living being, expand radially, and create a void in a second tissue of the living being upon being advanced distally through the access channel and into the second tissue while being rotated, wherein the shape of the void comprises at least one step. Further disclosed are debridement systems and methods of treating tissue defects in living beings.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: May 30, 2023
    Assignee: DSM IP ASSETS B.V.
    Inventors: William T. Fisher, Timothy Ringeisen, Gino Bradica
  • Publication number: 20230159881
    Abstract: A centrifuge device is provided for the sizing and separation of constituents of a biologic mixture, e.g., adipose tissue. The device provides for the mechanical breaking down of the fibrous structure in the tissue by centrifugation causing the tissue to pass through a mesh element, or a sizing helix, or an extrusion element, whereupon the material is reduced to a slurry. This processed material may then be separated by centrifugation into its constituents, in order to harvest the fraction containing the multipotent cells. These multipotent cells may be utilized for various medical procedures to stimulate healing and tissue regeneration.
    Type: Application
    Filed: January 9, 2023
    Publication date: May 25, 2023
    Inventors: John E. NASH, William T. FISHER, Gino BRADICA
  • Patent number: 11549094
    Abstract: A centrifuge device is provided for the sizing and separation of constituents of a biologic mixture, e.g., adipose tissue. The device provides for the mechanical breaking down of the fibrous structure in the tissue by centrifugation causing the tissue to pass through a mesh element, or a sizing helix, or an extrusion element, whereupon the material is reduced to a slurry. This processed material may then be separated by centrifugation into its constituents, in order to harvest the fraction containing the multipotent cells. These multipotent cells may be utilized for various medical procedures to stimulate healing and tissue regeneration.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: January 10, 2023
    Assignee: DSM IP ASSETS B.V.
    Inventors: John E. Nash, William T. Fisher, Gino Bradica
  • Publication number: 20220031925
    Abstract: Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) and or platelet poor plasma (PPP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma into separate receivers while retaining the platelets and other factors in the centrifuge chamber. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.
    Type: Application
    Filed: October 14, 2021
    Publication date: February 3, 2022
    Inventors: John E. NASH, William T. FISHER, Douglas G. EVANS
  • Patent number: 11167292
    Abstract: Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) and or platelet poor plasma (PPP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma into separate receivers while retaining the platelets and other factors in the centrifuge chamber. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: November 9, 2021
    Assignee: DSM IP Assets B.V.
    Inventors: John E. Nash, William T. Fisher, Douglas G. Evans
  • Publication number: 20210338893
    Abstract: Disclosed herein are devices and methods for processing biologic tissues, such as adipose tissue. The devices comprise a rotatable chamber and a fiber collector within. The fiber collector is configured to capture fibers from a sample.
    Type: Application
    Filed: October 10, 2019
    Publication date: November 4, 2021
    Inventors: William T. FISHER, Amit DEKA
  • Publication number: 20210077123
    Abstract: Disclosed are radially expanding debridement tools configured to pass through an access channel present in a first tissue of a living being, expand radially, and create a void in a second tissue of the living being upon being advanced distally through the access channel and into the second tissue while being rotated, wherein the shape of the void comprises at least one step. Further disclosed are debridement systems and methods of treating tissue defects in living beings.
    Type: Application
    Filed: January 25, 2019
    Publication date: March 18, 2021
    Inventors: William T. FISHER, Timothy RINGEISEN, Gino BRADICA
  • Publication number: 20200299632
    Abstract: A centrifuge device is provided for the sizing and separation of constituents of a biologic mixture, e.g., adipose tissue. The device provides for the mechanical breaking down of the fibrous structure in the tissue by centrifugation causing the tissue to pass through a mesh element, or a sizing helix, or an extrusion element, whereupon the material is reduced to a slurry. This processed material may then be separated by centrifugation into its constituents, in order to harvest the fraction containing the multipotent cells. These multipotent cells may be utilized for various medical procedures to stimulate healing and tissue regeneration.
    Type: Application
    Filed: June 5, 2020
    Publication date: September 24, 2020
    Inventors: John E. NASH, William T. FISHER, Gino BRADICA
  • Publication number: 20200268426
    Abstract: Disclosed are cable fixation devices. The fixation devices are configured to keep tension in a polymer cable to secure a fracture or for other medical uses. In an embodiment, a fixation device for securing a fracture comprises a body and a piercing element, wherein the fixation device is configured to pierce a polymer cable arranged in the body by engaging the piercing element. In an embodiment, the fixation device further comprises a retensioning member, which may be operated to increase tension in the polymer cable after the polymer has been pierced by the piecing element. In an embodiment, the polymer cable comprises a braid or a yarn.
    Type: Application
    Filed: September 14, 2018
    Publication date: August 27, 2020
    Inventors: William T. FISHER, Dennis M. SAURO, Timothy O'NEIL
  • Publication number: 20200222915
    Abstract: Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) and or platelet poor plasma (PPP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma into separate receivers while retaining the platelets and other factors in the centrifuge chamber. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.
    Type: Application
    Filed: March 30, 2020
    Publication date: July 16, 2020
    Inventors: John E. NASH, William T. FISHER, Douglas G. EVANS
  • Patent number: 10711239
    Abstract: A centrifuge device is provided for the sizing and separation of constituents of a biologic mixture, e.g., adipose tissue. The device provides for the mechanical breaking down of the fibrous structure in the tissue by centrifugation causing the tissue to pass through a mesh element, or a sizing helix, or an extrusion element, whereupon the material is reduced to a slurry. This processed material may then be separated by centrifugation into its constituents, in order to harvest the fraction containing the multipotent cells. These multipotent cells may be utilized for various medical procedures to stimulate healing and tissue regeneration.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: July 14, 2020
    Assignee: DSM IP ASSETS B.V.
    Inventors: John E. Nash, William T. Fisher, Gino Bradica
  • Patent number: 10646884
    Abstract: Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) and or platelet poor plasma (PPP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma into separate receivers while retaining the platelets and other factors in the centrifuge chamber. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: May 12, 2020
    Assignee: DSM IP ASSETS B.V.
    Inventors: John E. Nash, William T. Fisher, Douglas G. Evans
  • Patent number: 10517633
    Abstract: A device suitable for removing material from a living being is provided, featuring at least an aspiration pump, powered by a motor. The aspiration pump and any optional infusate pump preferably feature a helical pumping mechanism, and operate at a high rate of rotation, thereby ensuring adequate pumping performance and flexibility. The helical pumping mechanism may be a helical coiled wire about a central core tube. The helical coil wire, whether together with, or independent of, the core tube, may be rotated to cause a pumping action. Additionally, a narrow crossing profile is maintained, ensuring that the device may reach more tortuous regions of the vasculature. In one embodiment, the system comprises a wire-guided mono-rail catheter with a working head mounted on a flexible portion of the catheter that can laterally displace away from the guide wire to facilitate thrombus removal.
    Type: Grant
    Filed: September 16, 2017
    Date of Patent: December 31, 2019
    Assignee: THE SPECTRANETICS CORPORATION
    Inventors: John E. Nash, Greg Walters, Dennis M. Sauro, Mark Eberhardt, William T. Fisher, Douglas G. Evans
  • Patent number: 10125345
    Abstract: A centrifuge device is provided for the sizing and separation of constituents of a biologic mixture, e.g., adipose tissue. The device provides for the mechanical breaking down of the fibrous structure in the tissue by centrifugation causing the tissue to pass through a mesh element, or a sizing helix, or an extrusion element, whereupon the material is reduced to a slurry. This processed material may then be separated by centrifugation into its constituents, in order to harvest the fraction containing the multipotent cells. These multipotent cells may be utilized for various medical procedures to stimulate healing and tissue regeneration.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: November 13, 2018
    Assignee: DSM IP ASSETS, B.V.
    Inventors: John E. Nash, William T. Fisher, Gino Bradica
  • Publication number: 20180230418
    Abstract: A centrifuge device is provided for the sizing and separation of constituents of a biologic mixture, e.g., adipose tissue. The device provides for the mechanical breaking down of the fibrous structure in the tissue by centrifugation causing the tissue to pass through a mesh element, or a sizing helix, or an extrusion element, whereupon the material is reduced to a slurry. This processed material may then be separated by centrifugation into its constituents, in order to harvest the fraction containing the multipotent cells. These multipotent cells may be utilized for various medical procedures to stimulate healing and tissue regeneration.
    Type: Application
    Filed: April 10, 2018
    Publication date: August 16, 2018
    Inventors: John E. Nash, William T. Fisher, Gino Bradica
  • Patent number: 9987638
    Abstract: Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) and or platelet poor plasma (PPP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma into separate receivers while retaining the platelets and other factors in the centrifuge chamber. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: June 5, 2018
    Assignee: DSM IP ASSETS, B.V.
    Inventors: John E. Nash, William T. Fisher, Douglas G. Evans
  • Publication number: 20180104703
    Abstract: Centrifuges are useful to, among other things, remove red blood cells from whole blood and retain platelets and other factors in a reduced volume of plasma. Platelet rich plasma (PRP) and or platelet poor plasma (PPP) can be obtained rapidly and is ready for immediate injection into the host. Embodiments may include valves, operated manually or automatically, to open ports that discharge the excess red blood cells and the excess plasma into separate receivers while retaining the platelets and other factors in the centrifuge chamber. High speeds used allow simple and small embodiments to be used at the patient's side during surgical procedures. The embodiments can also be used for the separation of liquids or slurries in other fields such as, for example, the separation of pigments or lubricants.
    Type: Application
    Filed: December 14, 2017
    Publication date: April 19, 2018
    Inventors: John E. Nash, William T. Fisher, Douglas G. Evans
  • Patent number: 9931166
    Abstract: Various embodiments of an offset catheter are provided. In some embodiments, an offset catheter includes a guidewire tube and a catheter coupled with an elastic and/or compressible rib. The compressible rib provides an offset or separation between the catheter and the guidewire tube in its resting state. The rib has an initial resting state, but may be forced into a compressed state. When released from the compressed state, the rib returns to its resting state. An offset catheter may be compressed and slid through a sheath. When the offset catheter emerges from the sheath, the distal tip will return to its resting state providing an operation offset.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: April 3, 2018
    Assignee: The Spectranetics Corporation
    Inventors: Dennis M. Sauro, William T. Fisher