Patents by Inventor Jeff W. Mast

Jeff W. Mast 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: 20180199966
    Abstract: The present invention is directed to a bone plate and its method of use for reducing a bone fracture, the bone plate having a longitudinal axis, the bone plate comprising an upper surface, a lower surface, a first hole for engaging a head of a first bone anchor. The first hole is configured and adapted to fix a shaft of the first bone anchor along a first axis. A second hole is spaced apart from the first hole along the longitudinal axis. The second hole is for engaging a head of a second bone anchor, and is configured and adapted to fix a shaft of the second bone anchor along a second axis. The first hole and the second hole are configured such that the first axis and the second axis define a single plane and intersect at a point below the lower surface. The shafts of the first and second bone anchors may touch or nearly touch at the point of intersection, such that the first and second bone anchors form a truss.
    Type: Application
    Filed: March 14, 2018
    Publication date: July 19, 2018
    Inventors: Mark P. Grady, JR., Rene Haag, Scott Didomenico, Kenny Koay, Jeff W. Mast, Brett R. Bolhofner, Keith A. Mayo
  • Patent number: 9931148
    Abstract: A bone plate includes (a) a body having a first surface which, in an operative configuration, faces away from a bone on which the plate is to be mounted and a second surface, which in the operative configuration, faces the bone, the body including a first section extending along a first longitudinal axis and a second section extending along a second longitudinal axis angled with respect to the first longitudinal axis; (b) a first hole extending through the body from the first surface to the second surface and defining a first hole axis, the first hole being structured to lockingly engage a head of a first bone anchor inserted therein such that a shaft of the first bone anchor extends along the first hole axis; and (c) a second hole extending through the body and spaced apart from the first hole. The second hole defines a second hole axis and is structured to lockingly engage a head of a second bone anchor inserted therein such that a shaft of the second bone anchor extends along the second hole axis.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: April 3, 2018
    Assignee: DEPUY SYNTHES PRODUCTS, INC.
    Inventors: Mark P. Grady, Jr., René Haag, Scott Didomenico, Kenny Koay, Jeff W. Mast, Brett R Bolhofner, Keith A. Mayo
  • Patent number: 9351773
    Abstract: A tool is disclosed for use in distracting and compressing fractures of any of a variety of bones. In particular, the tool has a pair of engaging arms, one arm having a hook element to engage a bone plate connected to one side of a fracture, and the other arm having at least one recess for engaging a head of a bone screw or guide wire connected to the other side of the fracture. Actuation of the tool causes the opposing bone segments of the fracture to be pushed apart or drawn together, depending on whether the tool handles are squeezed together or pulled apart. The tool may have a scissors joint that allows the ends of the tool to maintain a parallel alignment during operation, thus reducing the chances for misalignment of the bone segments during operation.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: May 31, 2016
    Assignee: DEPUY SYNTHES PRODUCTS, INC.
    Inventors: Scott R. DiDomenico, Jason S. Chan, Jeff W. Mast, Keith A. Mayo, Brett B. Bolhofner
  • Publication number: 20160074081
    Abstract: The present invention relates to a bone plating system and method for fracture fixation of bone. The bone plating system includes a bone plate, at least one locking screw, and at least one non-locking screw. The bone plate has locking holes with threads and non-locking holes. The locking screws have a shaft with a thread for engaging bone and a head with a thread configured and dimensioned to mate with the thread of the locking holes. The non-locking screws have a thread for engaging bone and a non-threaded head. Both the locking and non-locking screws remain seated in their respective holes for substantially as long as the bone plate is implanted. The non-locking screws compress the bone plate against the bone and hold fracture reduction while the locking screws are secured to the plate at a fixed angular relationship. The mixed fixation achieved by this bone plating system and method is particularly useful for treatment of per-articular fractures.
    Type: Application
    Filed: November 23, 2015
    Publication date: March 17, 2016
    Inventors: Paul Weaver, Jeff W. Mast, Keith A. Mayo, Bret R. Bolhofner, David Little
  • Patent number: 9211151
    Abstract: The present invention relates to a bone plating system and method for fracture fixation of bone. The bone plating system includes a bone plate, at least one locking screw, and at least one non-locking screw. The bone plate has locking holes with threads and non-locking holes. The locking screws have a shaft with a thread for engaging bone and a head with a thread configured and dimensioned to mate with the thread of the locking holes. The non-locking screws have a thread for engaging bone and a non-threaded head. Both the locking and non-locking screws remain seated in their respective holes for substantially as long as the bone plate is implanted. The non-locking screws compress the bone plate against the bone and hold fracture reduction while the locking screws are secured to the plate at a fixed angular relationship. The mixed fixation achieved by this bone plating system and method is particularly useful for treatment of per-articular fractures.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: December 15, 2015
    Assignee: DePuy Synthes Products, Inc.
    Inventors: Paul Weaver, Jeff W. Mast, Keith A. Mayo, Brett R. Bolhofner, David Little
  • Patent number: 9011457
    Abstract: An aiming guide aligns a surgical tool with a hole in a bone plate. The aiming guide includes an arm portion having a longitudinal axis, top and bottom surfaces, and first and second ends. The aiming guide further includes a handle portion having upper and lower ends. The handle portion is, at its lower end, connected to the bone plate. The handle portion is, at its upper end, connected to the arm portion. Bores extend from the top surface to the lower surface of the arm portion. Each bore is configured and dimensioned to receive a tool guide in at least two different preset positions which locates the channel in at least two different hole positions. The bore includes two diametrically opposed slots extending along at least a portion of a length of the bore, the slots configured and dimensioned to mate with diametrically opposed knobs extending radially outward from a tool guide. The tool guide has a head and a sleeve portion, which has a centered channel.
    Type: Grant
    Filed: February 5, 2010
    Date of Patent: April 21, 2015
    Assignee: DePuy Synthes Products, Inc.
    Inventors: Mark P. Grady, Jr., Scott DiDomenico, Keith A. Mayo, Jeff W. Mast, Brett R. Bolhofner
  • Publication number: 20140243903
    Abstract: A tool is disclosed for use in distracting and compressing fractures of any of a variety of bones. In particular, the tool has a pair of engaging arms, one arm having a hook element to engage a bone plate connected to one side of a fracture, and the other arm having at least one recess for engaging a head of a bone screw or guide wire connected to the other side of the fracture. Actuation of the tool causes the opposing bone segments of the fracture to be pushed apart or drawn together, depending on whether the tool handles are squeezed together or pulled apart. The tool may have a scissors joint that allows the ends of the tool to maintain a parallel alignment during operation, thus reducing the chances for misalignment of the bone segments during operation.
    Type: Application
    Filed: May 7, 2014
    Publication date: August 28, 2014
    Applicant: DePuy Synthes Products, LLC
    Inventors: Scott R. DIDOMENICO, Jason S. CHAN, Jeff W. MAST, Keith A. MAYO, Brett B. BOLHOFNER
  • Patent number: 8753348
    Abstract: A tool is disclosed for use in distracting and compressing fractures of any of a variety of bones. In particular, the tool has a pair of engaging arms, one arm having a hook element to engage a bone plate connected to one side of a fracture, and the other arm having at least one recess for engaging a head of a bone screw or guide wire connected to the other side of the fracture. Actuation of the tool causes the opposing bone segments of the fracture to be pushed apart or drawn together, depending on whether the tool handles are squeezed together or pulled apart. The tool may have a scissors joint that allows the ends of the tool to maintain a parallel alignment during operation, thus reducing the chances for misalignment of the bone segments during operation.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: June 17, 2014
    Assignee: Depuy Synthes Products, LLC
    Inventors: Scott R. DiDomenico, Jason S. Chan, Jeff W. Mast, Keith A. Mayo, Brett B. Bolhofner
  • Publication number: 20140121710
    Abstract: The present invention relates to a bone plating system and method for fracture fixation of bone. The bone plating system includes a bone plate, at least one locking screw, and at least one non-locking screw. The bone plate has locking holes with threads and non-locking holes. The locking screws have a shaft with a thread for engaging bone and a head with a thread configured and dimensioned to mate with the thread of the locking holes. The non-locking screws have a thread for engaging bone and a non-threaded head. Both the locking and non-locking screws remain seated in their respective holes for substantially as long as the bone plate is implanted. The non-locking screws compress the bone plate against the bone and hold fracture reduction while the locking screws are secured to the plate at a fixed angular relationship. The mixed fixation achieved by this bone plating system and method is particularly useful for treatment of per-articular fractures.
    Type: Application
    Filed: January 2, 2014
    Publication date: May 1, 2014
    Applicant: DePuy Synthes Products, LLC
    Inventors: Paul Weaver, Jeff W. Mast, Keith A. Mayo, Brett R. Bolhofner, David Little
  • Patent number: 8641744
    Abstract: The present invention relates to a bone plating system and method for fracture fixation of bone. The bone plating system includes a bone plate, at least one locking screw, and at least one non-locking screw. The bone plate has locking holes with threads and non-locking holes. The locking screws have a shaft with a thread for engaging bone and a head with a thread configured and dimensioned to mate with the thread of the locking holes. The non-locking screws have a thread for engaging bone and a non-threaded head. Both the locking and non-locking screws remain seated in their respective holes for substantially as long as the bone plate is implanted. The non-locking screws compress the bone plate against the bone and hold fracture reduction while the locking screws are secured to the plate at a fixed angular relationship. The mixed fixation achieved by this bone plating system and method is particularly useful for treatment of per-articular fractures.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: February 4, 2014
    Assignee: DePuy Synthes Products, LLC
    Inventors: Paul C. Weaver, Jeff W. Mast, Keith A. Mayo, Brett R. Bolhofner, David Little
  • Patent number: 8043297
    Abstract: An aiming guide aligns a surgical tool with a hole in a bone plate. The aiming guide includes an arm portion having a longitudinal axis, top and bottom surfaces, and first and second ends. The aiming guide further includes a handle portion having upper and lower ends. The handle portion is, at its lower end, connected to the bone plate. The handle portion is, at its upper end, connected to the arm portion. Bores extend from the top surface to the lower surface of the arm portion. Each bore is configured and dimensioned to receive a tool guide in at least two different preset positions which locates the channel in at least two different hole positions. The bore includes two diametrically opposed slots extending along at least a portion of a length of the bore, the slots configured and dimensioned to mate with diametrically opposed knobs extending radially outward from a tool guide. The tool guide has a head and a sleeve portion, which has a centered channel.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: October 25, 2011
    Assignee: Synthes USA, LLC
    Inventors: Mark P. Grady, Jr., Scott DiDomenico, Keith A. Mayo, Jeff W. Mast, Brett R. Bolhofner
  • Publication number: 20110202093
    Abstract: A bone plate includes (a) a body having a first surface which, in an operative configuration, faces away from a bone on which the plate is to be mounted and a second surface, which in the operative configuration, faces the bone, the body including a first section extending along a first longitudinal axis and a second section extending along a second longitudinal axis angled with respect to the first longitudinal axis; (b) a first hole extending through the body from the first surface to the second surface and defining a first hole axis, the first hole being structured to lockingly engage a head of a first bone anchor inserted therein such that a shaft of the first bone anchor extends along the first hole axis; and (c) a second hole extending through the body and spaced apart from the first hole. The second hole defines a second hole axis and is structured to lockingly engage a head of a second bone anchor inserted therein such that a shaft of the second bone anchor extends along the second hole axis.
    Type: Application
    Filed: April 22, 2011
    Publication date: August 18, 2011
    Inventors: Mark P. Grady, JR., René Haag, Scott Didomenico, Kenny Koay, Jeff W. Mast, Brett R. Bolhofner, Keith A. Mayo
  • Patent number: 7951176
    Abstract: The present invention is directed to a bone plate and its method of use for reducing a bone fracture, the bone plate having a longitudinal axis, the bone plate comprising an upper surface, a lower surface, a first hole for engaging a head of a first bone anchor. The first hole is configured and adapted to fix a shaft of the first bone anchor along a first axis. A second hole is spaced apart from the first hole along the longitudinal axis. The second hole is for engaging a head of a second bone anchor, and is configured and adapted to fix a shaft of the second bone anchor along a second axis. The first hole and the second hole are configured such that the first axis and the second axis define a single plane and intersect at a point below the lower surface. The shafts of the first and second bone anchors may touch or nearly touch at the point of intersection, such that the first and second bone anchors form a truss.
    Type: Grant
    Filed: May 11, 2004
    Date of Patent: May 31, 2011
    Assignee: Synthes USA, LLC
    Inventors: Mark P. Grady, Jr., René Haag, Scott Didomenico, Kenny Koay, Jeff W. Mast, Brett R Bolhofner, Keith A. Mayo
  • Publication number: 20100274247
    Abstract: A bone plate has an upper surface, a lower surface, and at least one first hole extending through the upper and lower surfaces. The first hole has two or three vertically separate regions, each region communicating with or abutting the adjacent region. The first hole has a first upper region, which is unthreaded and which, from the plate's upper surface to the plate's lower surface, has a curved inward taper. The first hole has a second middle region, which is threaded and which, from the plate's upper surface to the plate's lower surface, has a conical inward taper. The first hole has a third lower region, which is unthreaded and which, from the plate's upper surface to the plate's lower surface, has a conical outward taper. The bone plate is straight, curved, or both straight and curved. The bone plate may have at least one second hole, different from the first hole.
    Type: Application
    Filed: July 8, 2010
    Publication date: October 28, 2010
    Inventors: Mark P. GRADY, JR., Keith A. Nayo, Jeff W. Mast, Brett R. Bolhofner, Kenny Koay
  • Patent number: 7776076
    Abstract: A bone plate has an upper surface, a lower surface, and at least one first hole extending through the upper and lower surfaces. The first hole has two or three vertically separate regions, each region communicating with or abutting an adjacent region. The first hole has a first unthreaded upper region, which has a curved inward taper from the plate's upper surface toward the plate's lower surface. The first hole has a second threaded middle region, which has a conical inward taper from the plate's upper surface toward the plate's lower surface. A third unthreaded lower region has a conical outward taper from the plate's upper surface toward the plate's lower surface. The bone plate may be straight, curved, or include a combination of both straight and curved segments.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: August 17, 2010
    Assignee: Synthes USA, LLC
    Inventors: Mark P. Grady, Jr., Keith A. Mayo, Jeff W. Mast, Brett R. Bolhofner, Kenny Koay
  • Publication number: 20100137873
    Abstract: An aiming guide aligns a surgical tool with a hole in a bone plate. The aiming guide includes an arm portion having a longitudinal axis, top and bottom surfaces, and first and second ends. The aiming guide further includes a handle portion having upper and lower ends. The handle portion is, at its lower end, connected to the bone plate. The handle portion is, at its upper end, connected to the arm portion. Bores extend from the top surface to the lower surface of the arm portion. Each bore is configured and dimensioned to receive a tool guide in at least two different preset positions which locates the channel in at least two different hole positions. The bore includes two diametrically opposed slots extending along at least a portion of a length of the bore, the slots configured and dimensioned to mate with diametrically opposed knobs extending radially outward from a tool guide. The tool guide has a head and a sleeve portion, which has a centered channel.
    Type: Application
    Filed: February 5, 2010
    Publication date: June 3, 2010
    Inventors: Mark P. GRADY, JR., Scott DiDomenico, Keith A. Mayo, Jeff W. Mast, Brett R. Bolhofner
  • Publication number: 20080132960
    Abstract: The present invention relates to a bone plating system and method for fracture fixation of bone. The bone plating system includes a bone plate, at least one locking screw, and at least one non-locking screw. The bone plate has locking holes with threads and non-locking holes. The locking screws have a shaft with a thread for engaging bone and a head with a thread configured and dimensioned to mate with the thread of the locking holes. The non-locking screws have a thread for engaging bone and a non-threaded head. Both the locking and non-locking screws remain seated in their respective holes for substantially as long as the bone plate is implanted. The non-locking screws compress the bone plate against the bone and hold fracture reduction while the locking screws are secured to the plate at a fixed angular relationship. The mixed fixation achieved by this bone plating system and method is particularly useful for treatment of per-articular fractures.
    Type: Application
    Filed: January 22, 2008
    Publication date: June 5, 2008
    Inventors: Paul C. Weaver, Jeff W. Mast, Keith A. Mayo, Brett R. Bolhofner, David Little
  • Patent number: 7341589
    Abstract: The present invention relates to a bone plating system and method for fracture fixation of bone. The bone plating system includes a bone plate, at least one locking screw, and at least one non-locking screw. The bone plate has locking holes with threads and non-locking holes. The locking screws have a shaft with a thread for engaging bone and a head with a thread configured and dimensioned to mate with the thread of the locking holes. The non-locking screws have a thread for engaging bone and a non-threaded head. Both the locking and non-locking screws remain seated in their respective holes for substantially as long as the bone plate is implanted. The non-locking screws compress the bone plate against the bone and hold fracture reduction while the locking screws are secured to the plate at a fixed angular relationship. The mixed fixation achieved by this bone plating system and method is particularly useful for treatment of per-articular fractures.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: March 11, 2008
    Assignee: Synthes (U.S.A.)
    Inventors: Paul C. Weaver, Jeff W. Mast, Keith A. Mayo, Brett R. Bolhofner, David Little
  • Patent number: 7128744
    Abstract: The present invention relates to a bone plating system and method for fracture fixation of bone. The bone plating system includes a bone plate, at least one locking screw, and at least one non-locking screw. The bone plate has locking holes with threads and non-locking holes. The locking screws have a shaft with a thread for engaging bone and a head with a thread configured and dimensioned to mate with the thread of the locking holes. The non-locking screws have a thread for engaging bone and a non-threaded head. Both the locking and non-locking screws remain seated in their respective holes for substantially as long as the bone plate is implanted. The non-locking screws compress the bone plate against the bone and hold fracture reduction while the locking screws are secured to the plate at a fixed angular relationship. The mixed fixation achieved by this bone plating system and method is particularly useful for treatment of per-articular fractures.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: October 31, 2006
    Assignee: Synthes (USA)
    Inventors: Paul C. Weaver, Jeff W. Mast, Keith A. Mayo, Brett R. Bolhofner, David Little
  • Publication number: 20040059335
    Abstract: The present invention relates to a bone plating system and method for fracture fixation of bone. The bone plating system includes a bone plate, at least one locking screw, and at least one non-locking screw. The bone plate has locking holes with threads and non-locking holes. The locking screws have a shaft with a thread for engaging bone and a head with a thread configured and dimensioned to mate with the thread of the locking holes. The non-locking screws have a thread for engaging bone and a non-threaded head. Both the locking and non-locking screws remain seated in their respective holes for substantially as long as the bone plate is implanted. The non-locking screws compress the bone plate against the bone and hold fracture reduction while the locking screws are secured to the plate at a fixed angular relationship. The mixed fixation achieved by this bone plating system and method is particularly useful for treatment of per-articular fractures.
    Type: Application
    Filed: September 22, 2003
    Publication date: March 25, 2004
    Applicant: Synthes (U.S.A.)
    Inventors: Paul C. Weaver, Jeff W. Mast, Keith A. Mayo, Brett R. Bolhofner, David Little