Patents by Inventor Darrel S. Brodke
Darrel S. Brodke 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).
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Patent number: 9532885Abstract: In one form, a system for use in percutaneous surgical procedures includes a cannula having an elongate body extending along a longitudinal axis between a proximal end and a distal end and including a working channel dynamically expandable from a first, unexpanded configuration. The system also includes a device that is positionable in and engageable with the working channel to expand the working channel from the first configuration as the device is moved through the working channel. In response to disengagement of the device with the working channel, the working channel returns to the first, unexpanded configuration. In one aspect of this form, the device includes an interbody spinal implant that is deliverable to a surgical site through the working channel of the cannula. In another form, a method for performing a percutaneous surgical procedure is provided. However, different forms and applications are envisioned.Type: GrantFiled: November 9, 2015Date of Patent: January 3, 2017Assignee: KYPHON SÀRLInventors: Carl Lauryssen, Gary A. Schneiderman, Darrel S. Brodke, Frank M. Phillips
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Publication number: 20160058578Abstract: In one form, a system for use in percutaneous surgical procedures includes a cannula having an elongate body extending along a longitudinal axis between a proximal end and a distal end and including a working channel dynamically expandable from a first, unexpanded configuration. The system also includes a device that is positionable in and engageable with the working channel to expand the working channel from the first configuration as the device is moved through the working channel. In response to disengagement of the device with the working channel, the working channel returns to the first, unexpanded configuration. In one aspect of this form, the device includes an interbody spinal implant that is deliverable to a surgical site through the working channel of the cannula. In another form, a method for performing a percutaneous surgical procedure is provided. However, different forms and applications are envisioned.Type: ApplicationFiled: November 9, 2015Publication date: March 3, 2016Inventors: CARL LAURYSSEN, Gary A. Schneiderman, Darrel S. Brodke, Frank M. Phillips
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Patent number: 9211140Abstract: In one form, a system for use in percutaneous surgical procedures includes a cannula having an elongate body extending along a longitudinal axis between a proximal end and a distal end and including a working channel dynamically expandable from a first, unexpanded configuration. The system also includes a device that is positionable in and engageable with the working channel to expand the working channel from the first configuration as the device is moved through the working channel. In response to disengagement of the device with the working channel, the working channel returns to the first, unexpanded configuration. In one aspect of this form, the device includes an interbody spinal implant that is deliverable to a surgical site through the working channel of the cannula. In another form, a method for performing a percutaneous surgical procedure is provided. However, different forms and applications are envisioned.Type: GrantFiled: November 24, 2010Date of Patent: December 15, 2015Assignee: KYPHON SARLInventors: Carl Lauryssen, Gary A. Schneiderman, Darrel S. Brodke, Frank M. Phillips
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Publication number: 20130304210Abstract: A total disc implant (TDI) is provided for total replacement of a spinal disc or discs in a human patient or other mammal, wherein the TDI is designed to maintain a substantially full range of natural motion (ROM) following implantation. The TDI generally comprises, in one preferred form, upper and lower end plates for affixation to adjacent vertebral bodies, with an intervening insert disposed therebetween. The end plates each include elongated part-cylindrical surfaces oriented generally perpendicular to each other, with one of said surfaces extending in an anterior-posterior direction and the other extending in a medial-lateral direction. The intervening insert defines concave upper and lower part-cylindrical seats oriented for respectively engaging these part-cylindrical surfaces, wherein these part-cylindrical seats are defined by offset radii to include a somewhat flattened central base region merging smoothly with upwardly curving radiused sides.Type: ApplicationFiled: February 11, 2013Publication date: November 14, 2013Inventors: Ashok C. Khandkar, Darrel S. Brodke, Ramaswamy Lakshminarayaran
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Patent number: 8377134Abstract: A total disc implant (TDI) is provided for total replacement of a spinal disc or discs in a human patient or other mammal, wherein the TDI is designed to maintain a substantially full range of natural motion (ROM) following implantation. The TDI generally comprises, in one preferred form, upper and lower end plates for affixation to adjacent vertebral bodies, with an intervening insert disposed therebetween. The end plates each include elongated part-cylindrical surfaces oriented, generally perpendicular to each other, with one of the surfaces extending in an anterior-posterior direction and the other extending in a medial-lateral direction. The intervening insert defines concave upper and lower part-cylindrical seats oriented, for respectively engaging these part-cylindrical surfaces, wherein these part-cylindrical seats are defined by offset radii to include a somewhat flattened central base region merging smoothly with upwardly curving radiused sides.Type: GrantFiled: August 11, 2011Date of Patent: February 19, 2013Assignee: Amedica CorporationInventors: Ashok C. Khandkar, Darrel S. Brodke, Ramaswamy Lakshminarayanan
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Publication number: 20130030531Abstract: An improved bone graft is provided for human implantation, particularly such as a spinal fusion cage for implantation into the inter-vertebral space between two adjacent vertebrae. The improved spinal fusion cage includes a substrate block of high strength biocompatible material having a selected size and shape to fit the anatomical space, and a controlled porosity analogous to natural bone. The substrate block may be coated with a bio-active surface coating material such as hydroxyapatite or a calcium phosphate to promote bone ingrowth and enhanced bone fusion. Upon implantation, the fusion cage provides a spacer element having a desired combination of mechanical strength together with osteoconductivity and osteoinductivity to promote bone ingrowth and fusion, as well as radiolucency for facilitated post-operative monitoring. The fusion cage may additionally carry one or more natural or synthetic therapeutic agents for further promoting bone ingrowth and fusion.Type: ApplicationFiled: June 29, 2012Publication date: January 31, 2013Applicant: Amedica CorporationInventors: Darrel S. Brodke, Bret M. Berry, Ashok C. Khandkar, Ramaswamy Lakshminarayanan, Mahendra S. Rao
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Publication number: 20120330420Abstract: An improved implant is provided for human implantation, such as a spinal implant for implantation into the intervertebral space between two adjacent vertebrae. Some embodiments include a substrate of high strength biocompatible material, such as doped silicon nitride ceramic for example. In some embodiments, the substrate may also include one or more regions of a controlled porosity analogous to natural bone. In other embodiments, the substrate may comprise the entire implant.Type: ApplicationFiled: May 10, 2012Publication date: December 27, 2012Applicant: Amedica CorporationInventors: Darrel S. Brodke, Bret M. Berry, Ashok C. Khandkar, Ramaswamy Lakshminarayanan, Mahendra S. Rao
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Publication number: 20120277864Abstract: A cannula assembly and related methods of use. The cannula assembly includes a cannula and a stylet. The cannula has an outer surface that is non-circular. Rotation of the cannula about its longitudinal axis changes the orientation of the cannula's larger outer dimension so that the cannula may be used as a distraction tool. Rotation is effected by rotating a stylet handle, which rotates the associated stylet shaft, which in turn rotates the cannula. Related methods include rotating a handle of the stylet, while the shaft of the stylet is disposed in the bore of the cannula, about the first longitudinal axis so as to rotate the cannula about the longitudinal axis to distract vertebral bodies.Type: ApplicationFiled: April 26, 2011Publication date: November 1, 2012Applicant: WARSAW ORTHOPEDIC, INC.Inventors: Darrel S. Brodke, Carl Lauryssen, Frank M. Phillips, Gary A. Schneiderman, Bruce Chabansky, Calin Druma
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Publication number: 20120130161Abstract: In one form, a system for use in percutaneous surgical procedures includes a cannula having an elongate body extending along a longitudinal axis between a proximal end and a distal end and including a working channel dynamically expandable from a first, unexpanded configuration. The system also includes a device that is positionable in and engageable with the working channel to expand the working channel from the first configuration as the device is moved through the working channel. In response to disengagement of the device with the working channel, the working channel returns to the first, unexpanded configuration. In one aspect of this form, the device includes an interbody spinal implant that is deliverable to a surgical site through the working channel of the cannula. In another form, a method for performing a percutaneous surgical procedure is provided. However, different forms and applications are envisioned.Type: ApplicationFiled: November 24, 2010Publication date: May 24, 2012Applicant: KYPHON SARLInventors: Carl Lauryssen, Gary A. Schneiderman, Darrel S. Brodke, Frank M. Phillips
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Publication number: 20120123545Abstract: A total disc implant (TDI) is provided for total replacement of a spinal disc or discs in a human patient or other mammal, wherein the TDI is designed to maintain a substantially full range of natural motion (ROM) following implantation. The TDI generally comprises, in one preferred form, upper and lower end plates for affixation to adjacent vertebral bodies, with an intervening insert disposed therebetween. The end plates each include elongated part-cylindrical surfaces oriented generally perpendicular to each other, with one of said surfaces extending in an anterior-posterior direction and the other extending in a medial-lateral direction. The intervening insert defines concave upper and lower part-cylindrical seats oriented for respectively engaging these part-cylindrical surfaces, wherein these part-cylindrical seats are defined by offset radii to include a somewhat flattened central base region merging smoothly with upwardly curving radiused sides.Type: ApplicationFiled: August 11, 2011Publication date: May 17, 2012Applicant: Amedica CorporationInventors: Ashok C. Khandkar, Darrel S. Brodke, Ramaswamy Lakshminarayanan
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Patent number: 8016890Abstract: A total disc implant (TDI) is provided for total replacement of a spinal disc or discs in a human patient or other mammal, wherein the TDI is designed to maintain a substantially full range of natural motion (ROM) following implantation. The TDI generally comprises, in one preferred form, upper and lower end plates for affixation to adjacent vertebral bodies, with an intervening insert disposed therebetween. The end plates each include elongated part-cylindrical surfaces oriented generally perpendicular to each other, with one of said surfaces extending in an anterior-posterior direction and the other extending in a medial-lateral direction. The intervening insert defines concave upper and lower part-cylindrical seats oriented for respectively engaging these part-cylindrical surfaces, wherein these part-cylindrical seats are defined by offset radii to include a somewhat flattened central base region merging smoothly with upwardly curving radiused sides.Type: GrantFiled: July 7, 2010Date of Patent: September 13, 2011Assignee: Amedica CorporationInventors: Ashok C. Khandkar, Darrel S. Brodke, Ramaswamy Lakshminarayanan
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Publication number: 20110098818Abstract: An improved bone graft is provided for human implantation, particularly such as a spinal fusion cage for implantation into the inter-vertebral space between two adjacent vertebrae. The improved spinal fusion cage includes a substrate block of high strength biocompatible material having a selected size and shape to fit the anatomical space, and a controlled porosity analogous to natural bone. The substrate block may be coated with a bio-active surface coating material such as hydroxyapatite or a calcium phosphate to promote bone ingrowth and enhanced bone fusion. Upon implantation, the fusion cage provides a spacer element having a desired combination of mechanical strength together with osteoconductivity and osteoinductivity to promote bone ingrowth and fusion, as well as radiolucency for facilitated post-operative monitoring. The fusion cage may additionally carry one or more natural or synthetic therapeutic agents for further promoting bone ingrowth and fusion.Type: ApplicationFiled: May 10, 2010Publication date: April 28, 2011Inventors: Darrel S. Brodke, Bret M. Berry, Ashok C. Khandkar, Ramaswamy Lakshminarayanan, Mahendra S. Rao
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Publication number: 20110046741Abstract: A total disc implant (TDI) is provided for total replacement of a spinal disc or discs in a human patient or other mammal, wherein the TDI is designed to maintain a substantially full range of natural motion (ROM) following implantation. The TDI generally comprises, in one preferred form, upper and lower end plates for affixation to adjacent vertebral bodies, with an intervening insert disposed therebetween. The end plates each include elongated part-cylindrical surfaces oriented generally perpendicular to each other, with one of said surfaces extending in an anterior-posterior direction and the other extending in a medial-lateral direction. The intervening insert defines concave upper and lower part-cylindrical seats oriented for respectively engaging these part-cylindrical surfaces, wherein these part-cylindrical seats are defined by offset radii to include a somewhat flattened central base region merging smoothly with upwardly curving radiused sides.Type: ApplicationFiled: July 7, 2010Publication date: February 24, 2011Applicant: Amedica CorporationInventors: Ashok C. Khandkar, Darrel S. Brodke, Ramaswamy Lakshminarayanan
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Publication number: 20100217330Abstract: An apparatus includes a bone screw and a retention member. The bone screw has a proximal end portion and a distal end portion. The distal end portion of the bone screw includes a threaded portion. The retention member is coupled to the proximal end portion of the bone screw such that movement of the retention member relative to the bone screw is limited. The retention member is configured to deform when moved from a first configuration to a second configuration.Type: ApplicationFiled: February 24, 2009Publication date: August 26, 2010Inventors: Christopher U. Phan, Darrel S. Brodke
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Patent number: 7771481Abstract: A total disc implant (TDI) is provided for total replacement of a spinal disc or discs in a human patient or other mammal, wherein the TDI is designed to maintain a substantially full range of natural motion (ROM) following implantation. The TDI generally comprises, in one preferred form, upper and lower end plates for affixation to adjacent vertebral bodies, with an intervening insert disposed therebetween. The end plates each include elongated part-cylindrical surfaces oriented generally perpendicular to each other, with one of said surfaces extending in an anterior-posterior direction and the other extending in a medial-lateral direction. The intervening insert defines concave upper and lower part-cylindrical seats oriented for respectively engaging these part-cylindrical surfaces, wherein these part-cylindrical seats are defined by offset radii to include a somewhat flattened central base region merging smoothly with upwardly curving radiused sides.Type: GrantFiled: September 19, 2007Date of Patent: August 10, 2010Assignee: Amedica CorporationInventors: Ashok C. Khandkar, Darrel S. Brodke, Ramaswamy Lakshminarayanan
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Patent number: 7758646Abstract: A total disc implant (TDI) is provided for total replacement of a spinal disc or discs in a human patient or other mammal, wherein the TDI is designed to maintain a substantially full range of natural motion (ROM) following implantation. The TDI generally comprises, in one preferred form, upper and lower end plates for affixation to adjacent vertebral bodies, with an intervening insert disposed therebetween. The end plates each include elongated part-cylindrical surfaces oriented generally perpendicular to each other, with one of said surfaces extending in an anterior-posterior direction and the other extending in a medial-lateral direction. The intervening insert defines concave upper and lower part-cylindrical seats oriented for respectively engaging these part-cylindrical surfaces, wherein these part-cylindrical seats are defined by offset radii to include a somewhat flattened central base region merging smoothly with upwardly curving radiused sides.Type: GrantFiled: June 9, 2005Date of Patent: July 20, 2010Assignee: Amedica CorporationInventors: Ashok C. Khandkar, Darrel S. Brodke, Ramaswamy Lakshminarayanan
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Patent number: 6994727Abstract: A total disc implant (TDI) is provided for total replacement of a spinal disc or discs in a human patient or other mammal, wherein the TDI is designed to maintain a substantially full range of natural motion (ROM) following implantation. The TDI generally comprises, in one preferred form, upper and lower end plates for affixation to adjacent vertebral bodies, with an intervening insert disposed therebetween. The end plates each include elongated part-cylindrical surfaces oriented generally perpendicular to each other, with one of said surfaces extending in an anterior-posterior direction and the other extending in a medial-lateral direction. The intervening insert defines concave upper and lower part-cylindrical seats oriented for respectively engaging these part-cylindrical surfaces, wherein these part-cylindrical seats are defined by offset radii to include a somewhat flattened central base region merging smoothly with upwardly curving radiused sides.Type: GrantFiled: December 15, 2003Date of Patent: February 7, 2006Assignee: Amedica CorporationInventors: Ashok C. Khandkar, Darrel S. Brodke, Ramaswamy Lakshminarayanan
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Patent number: 6790233Abstract: An improved ceramic bone graft is provided for human implantation, particularly such as a spinal fusion cage for implantation into the inter-vertebral space between two adjacent vertebrae. The improved spinal fusion cage includes a substrate block of high strength ceramic having a selected size and shape to fit the anatomical space, and a controlled porosity analogous to natural bone. The substrate block is coated with a bio-active surface coating material such as hydroxyapatite or a calcium phosphate to promote bone ingrowth and enhanced bone fusion. Upon implantation, the fusion cage provides a spacer element having a desired combination of mechanical strength together with osteoconductivity and osteoinductivity to promote bone ingrowth and fusion, as well as radiolucency for facilitated post-operative monitoring. The fusion cage may additionally carry one or more natural or synthetic therapeutic agents for further promoting bone ingrowth and fusion.Type: GrantFiled: April 30, 2002Date of Patent: September 14, 2004Assignee: Amedica CorporationInventors: Darrel S. Brodke, Ashok C. Khandkar, Mahendra S. Rao, Ramaswamy Lakshminarayanan
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Publication number: 20040133281Abstract: A total disc implant (TDI) is provided for total replacement of a spinal disc or discs in a human patient or other mammal, wherein the TDI is designed to maintain a substantially full range of natural motion (ROM) following implantation. The TDI generally comprises, in one preferred form, upper and lower end plates for affixation to adjacent vertebral bodies, with an intervening insert disposed therebetween. The end plates each include elongated part-cylindrical surfaces oriented generally perpendicular to each other, with one of said surfaces extending in an anterior-posterior direction and the other extending in a medial-lateral direction. The intervening insert defines concave upper and lower part-cylindrical seats oriented for respectively engaging these part-cylindrical surfaces, wherein these part-cylindrical seats are defined by offset radii to include a somewhat flattened central base region merging smoothly with upwardly curving radiused sides.Type: ApplicationFiled: December 15, 2003Publication date: July 8, 2004Inventors: Ashok C. Khandkar, Darrel S. Brodke, Ramaswamy Lakshminarayanan
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Publication number: 20020173850Abstract: An improved ceramic bone graft is provided for human implantation, particularly such as a spinal fusion cage for implantation into the inter-vertebral space between two adjacent vertebrae. The improved spinal fusion cage includes a substrate block of high strength ceramic having a selected size and shape to fit the anatomical space, and a controlled porosity analogous to natural bone. The substrate block is coated with a bio-active surface coating material such as hydroxyapatite or a calcium phosphate to promote bone ingrowth and enhanced bone fusion. Upon implantation, the fusion cage provides a spacer element having a desired combination of mechanical strength together with osteoconductivity and osteoinductivity to promote bone ingrowth and fusion, as well as radiolucency for facilitated post-operative monitoring. The fusion cage may additionally carry one or more natural or synthetic therapeutic agents for further promoting bone ingrowth and fusion.Type: ApplicationFiled: April 30, 2002Publication date: November 21, 2002Applicant: Amedica CorporationInventors: Darrel S. Brodke, Ashok C. Khandkar, Mahendra S. Rao, Ramaswamy Lakshminarayanan