Patents by Inventor Christopher L. Ramsay

Christopher L. Ramsay 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: 12569263
    Abstract: An apparatus for positioning and guiding a drill for forming a bone passage during surgery is provided. The apparatus may include a handle and a sleeve disposed on the handle. The sleeve may be configured to receive a drill. The apparatus may further include a neck disposed on the handle and a lever disposed on the neck. The neck may be movable in translation relative to the handle. The lever may be angularly movable in rotation relative to the neck. The apparatus may further include a guide arm disposed on the lever and a neck locking mechanism disposed on the handle. The neck locking mechanism configured to hold the neck in place relative to the handle passage and release the neck. The apparatus may further include a detent mechanism configured to provide a resistance against rotation of the lever.
    Type: Grant
    Filed: January 30, 2025
    Date of Patent: March 10, 2026
    Assignee: INS Ortho, Inc.
    Inventors: Christian N. Anderson, Christopher L. Ramsay, Samuel Grossman
  • Publication number: 20250241663
    Abstract: An apparatus for positioning and guiding a drill for forming a bone passage during surgery is provided. The apparatus may include a handle and a sleeve disposed on the handle. The sleeve may be configured to receive a drill. The apparatus may further include a neck disposed on the handle and a lever disposed on the neck. The neck may be movable in translation relative to the handle. The lever may be angularly movable in rotation relative to the neck. The apparatus may further include a guide arm disposed on the lever and a neck locking mechanism disposed on the handle. The neck locking mechanism configured to hold the neck in place relative to the handle passage and release the neck. The apparatus may further include a detent mechanism configured to provide a resistance against rotation of the lever.
    Type: Application
    Filed: January 30, 2025
    Publication date: July 31, 2025
    Inventors: Christian N. Anderson, Christopher L. Ramsay, Samuel Grossman
  • Publication number: 20250195105
    Abstract: An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, “ultra-MIS” techniques.
    Type: Application
    Filed: December 19, 2024
    Publication date: June 19, 2025
    Applicant: Medos International Sàrl
    Inventors: Jörn Richter, Christopher L. Ramsay, Paul Maguire, John C. Voellmicke
  • Patent number: 12193704
    Abstract: An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, “ultra-MIS” techniques.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: January 14, 2025
    Assignee: Medos International Sàrl
    Inventors: Jörn Richter, Christopher L. Ramsay, Paul Maguire, John C. Voellmicke
  • Patent number: 11911017
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezius muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: February 27, 2024
    Assignee: DePuy Synthes Products, Inc.
    Inventors: William C. Horton, John Riley Hawkins, Christopher L. Ramsay, Edward B. Zalenski, Alexander Grinberg, Hassan Serhan, Ernest Quintanilha
  • Publication number: 20230135764
    Abstract: An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, “ultra-MIS” techniques.
    Type: Application
    Filed: December 29, 2022
    Publication date: May 4, 2023
    Applicant: Medos International Sarl
    Inventors: Jörn Richter, Christopher L. Ramsay, Paul Maguire, John C. Voellmicke
  • Patent number: 11559328
    Abstract: An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, “ultra-MIS” techniques.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: January 24, 2023
    Assignee: MEDOS INTERNATIONAL SARL
    Inventors: Jörn Richter, Christopher L. Ramsay, Paul Maguire, John C. Voellmicke
  • Patent number: 11278323
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: March 22, 2022
    Assignee: DePuy Synthes Products, Inc.
    Inventors: William C. Horton, John Riley Hawkins, Christopher L. Ramsay, Edward B. Zalenski, Alexander Grinberg, Hassan Serhan, Ernest Quintanilha
  • Patent number: 11241255
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: February 8, 2022
    Assignee: DePuy Synthes Products, Inc.
    Inventors: William C. Horton, John Riley Hawkins, Christopher L. Ramsay, Edward B. Zalenski, Alexander Grinberg, Hassan Serhan, Ernest Quintanilha
  • Patent number: 11234736
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: February 1, 2022
    Assignee: DePuy Synthes Products, Inc.
    Inventors: William C. Horton, John Riley Hawkins, Christopher L. Ramsay, Edward B. Zalenski, Alexander Grinberg, Hassan Serhan, Ernest Quintanilha
  • Patent number: 11134987
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: October 5, 2021
    Assignee: DePuy Synthes Products, Inc.
    Inventors: William C. Horton, John Riley Hawkins, Christopher L. Ramsay, Edward B. Zalenski, Alexander Grinberg, Hassan Serhan, Ernest Quintanilha
  • Patent number: 10695093
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: June 30, 2020
    Assignee: DePuy Synthes Products, Inc.
    Inventors: William C. Horton, John Riley Hawkins, Christopher L. Ramsay, Edward Zalenski, Alexander Grinberg, Hassan Serhan, Ernest Quintanilha
  • Publication number: 20200179007
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical. spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Application
    Filed: January 2, 2020
    Publication date: June 11, 2020
    Inventors: William C. Horton, John Riley Hawkins, Christopher L. Ramsay, Edward B. Zalenski, Alexander Grinberg, Hassan Serhan, Ernest Quintanilha
  • Publication number: 20200085421
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Application
    Filed: March 27, 2017
    Publication date: March 19, 2020
    Inventors: William C. HORTON, John Riley HAWKINS, Christopher L. RAMSAY, Edward ZALENSKI, Alexander GRINBERG, Hassan SERHAN, Ernest QUINTANILHA
  • Publication number: 20190209154
    Abstract: An access device for accessing an intervertebral disc having an outer shield comprising an access shield with a larger diameter (˜16-30 mm) that reaches from the skin down to the facet line, with an inner shield having a second smaller diameter (˜5-12 mm) extending past the access shield and reaches down to the disc level. This combines the benefits of the direct visual microsurgical/mini open approaches and the percutaneous, “ultra-MIS” techniques.
    Type: Application
    Filed: March 13, 2019
    Publication date: July 11, 2019
    Applicant: Medos International Sarl
    Inventors: Jörn Richter, Christopher L. Ramsay, Paul Maguire, John C. Voellmicke
  • Publication number: 20190083140
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Application
    Filed: September 7, 2018
    Publication date: March 21, 2019
    Inventors: William C. Horton, John Riley Hawkins, Christopher L. Ramsay, Edward Zalenski, Alexander Grinberg, Hassan Serhan, Ernest Quintaniha
  • Publication number: 20190083142
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezius muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Application
    Filed: September 7, 2018
    Publication date: March 21, 2019
    Inventors: William C. Horton, John Riley Hawkins, Christopher L. Ramsay, Edward Zalenski, Alexander Grinberg, Hassan Serhan, Ernest Quintaniha
  • Publication number: 20190083143
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Application
    Filed: September 7, 2018
    Publication date: March 21, 2019
    Inventors: William C. Horton, John Riley Hawkins, Christopher L. Ramsay, Edward Zalenski, Alexander Grinberg, Hassan Serhan, Ernest Quintanilha
  • Publication number: 20190083137
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Application
    Filed: September 7, 2018
    Publication date: March 21, 2019
    Inventors: William C. Horton, John Riley Hawkins, Christopher L. Ramsay, Edward Zalenski, Alexander Grinberg, Hassan Serhan, Ernest Quintaniha
  • Publication number: 20190083139
    Abstract: A novel posterolateral inter-muscular approach has been developed to access the cervical spine. The approach includes elevating the splenius capitis and trapezios muscles dorsally to create a window for deep spine access, wherein the window comprises: i) an anterior superior border of the trapezius muscle; ii) an anterior inferior border of the splenius capitis muscle, and iii) a posterior superior border of the levator scapulae muscle. Preferably, a device such as an implant or an instrument is then passed through the window to manipulate the spine.
    Type: Application
    Filed: September 7, 2018
    Publication date: March 21, 2019
    Inventors: William C. Horton, John Riley Hawkins, Christopher L. Ramsay, Edward Zalenski, Alexander Grinberg, Hassan Serhan, Ernest Quintaniha