Patents by Inventor Vivek D. Pawar
Vivek D. Pawar 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: 11925561Abstract: There are provided herein methods and products resulting therefrom. The methods include attaching a pre-fabricated porous ingrowth structure to a substrate by applying heat, or creating and bonding an in-situ-formed porous ingrowth structure from beads on a substrate by applying heat. In some embodiments, an oxidized metal surface of the substrate is diffusion hardened during the heating process. In some embodiments, a vacuum is applied during the heating process. In some embodiments, pressure is applied during the heating process. Also provided herein are assemblies for compressing the pre-fabricated porous ingrowth structure or the beads onto the substrate during the heating process.Type: GrantFiled: August 1, 2022Date of Patent: March 12, 2024Assignees: Smith & Nephew, Inc., Smith & Nephew Orthopaedics AG, Smith & Nephew Asia Pacific Pte. LimitedInventors: Marcus L. Scott, Vivek D. Pawar, Carolyn L. Weaver, Daniel A Heuer, Roger R. Dees, Jr., Forrest A. James, Matthew J. Quick
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Publication number: 20230131878Abstract: The present disclosure provides zirconium powder particles comprising pure zirconium powder particles with an oxide layer ranging from 0.05 to 5 microns in thickness and/or zirconium alloy powder particles with an oxide layer ranging from 0.05 to 5 microns in thickness. In some embodiments, the zirconium powder particles may be spherical particles, the zirconium powder particles may range from 5 microns to 125 microns in diameter, and/or the zirconium powder particles may have a median particle size ranging from 25 to 70 microns in diameter. The present disclosure further provides methods of producing medical implants or medical implant components by a process that comprises selectively applying energy to such zirconium powder particles to build the medical implants or the medical implant components. In some embodiments, the methods comprise repeatedly forming a layer of zirconium powder particles and irradiating the layer of zirconium powder particles with an energy source.Type: ApplicationFiled: April 14, 2021Publication date: April 27, 2023Applicants: Smith & Nephew, Inc., Smith & Nephew Orthopaedics AG, Smith & Nephew Asia Pacific Pte. LimitedInventor: Vivek D. Pawar
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Patent number: 11596720Abstract: A method of incorporating silver and/or copper into a biomedical implant includes: providing an implant having an outer surface; depositing silver and/or copper onto the outer surface of the implant; diffusing the silver and/or copper into a subsurface zone adjacent the outer surface; and oxidizing or anodizing the implant after the diffusion step to form an oxidized or anodized layer that contains at least some amount of elemental silver, elemental copper or silver or copper ions or compounds.Type: GrantFiled: August 20, 2019Date of Patent: March 7, 2023Assignee: Smith & Nephew, Inc.Inventors: Vivek D. Pawar, John Rose, Carolyn Weaver
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Publication number: 20220362024Abstract: There are provided herein methods and products resulting therefrom. The methods include attaching a pre-fabricated porous ingrowth structure to a substrate by applying heat, or creating and bonding an in-situ-formed porous ingrowth structure from beads on a substrate by applying heat. In some embodiments, an oxidized metal surface of the substrate is diffusion hardened during the heating process. In some embodiments, a vacuum is applied during the heating process. In some embodiments, pressure is applied during the heating process. Also provided herein are assemblies for compressing the pre-fabricated porous ingrowth structure or the beads onto the substrate during the heating process.Type: ApplicationFiled: August 1, 2022Publication date: November 17, 2022Applicants: Smith & Nephew, Inc., Smith & Nephew Orthopaedics AG, Smith & Nephew Asia Pacific Pte. LimitedInventors: Marcus L. Scott, Vivek D. Pawar, Carolyn L. Weaver, Daniel A. Heuer, Roger R. Dees, JR., Forrest A. James, Matthew J. Quick
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Patent number: 11446150Abstract: There are provided herein methods and products resulting therefrom. The methods include attaching a pre-fabricated porous ingrowth structure to a substrate by applying heat, or creating and bonding an in-situ-formed porous ingrowth structure from beads on a substrate by applying heat. In some embodiments, an oxidized metal surface of the substrate is diffusion hardened during the heating process. In some embodiments, a vacuum is applied during the heating process. In some embodiments, pressure is applied during the heating process. Also provided herein are assemblies for compressing the pre-fabricated porous ingrowth structure or the beads onto the substrate during the heating process.Type: GrantFiled: August 7, 2020Date of Patent: September 20, 2022Assignees: Smith & Nephew, Inc., Smith & Nephew Orthopaedics AG, Smith & Nephew Asia Pacific Pte. LimitedInventors: Marcus L. Scott, Vivek D. Pawar, Carolyn L. Weaver, Daniel A. Heuer, Roger R. Dees, Jr., Forrest A. James, Matthew J. Quick
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Publication number: 20200000977Abstract: A method of incorporating silver and/or copper into a biomedical implant includes: providing an implant having an outer surface; depositing silver and/or copper onto the outer surface of the implant; diffusing the silver and/or copper into a subsurface zone adjacent the outer surface; and oxidizing or anodizing the implant after the diffusion step to form an oxidized or anodized layer that contains at least some amount of elemental silver, elemental copper or silver or copper ions or compounds.Type: ApplicationFiled: August 20, 2019Publication date: January 2, 2020Inventors: Vivek D. Pawar, John Rose, Carolyn Weaver
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Publication number: 20190337055Abstract: The present disclosure provides methods to improve the properties of a porous structure formed by a rapid manufacturing technique. Embodiments of the present disclosure increase the bonding between the micro-particles 5 on the surface of the porous structure and the porous structure itself without substantially reduce the surface area of the micro-particles. In one aspect, embodiments of the present disclosure improves the bonding while preserving or increasing the friction of the structure against adjacent materials.Type: ApplicationFiled: July 16, 2019Publication date: November 7, 2019Inventors: Marcus L. Scott, Lu Gan, Vivek D. Pawar, Stanley Tsai
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Patent number: 10413640Abstract: A method of incorporating silver and/or copper into a biomedical implant includes: providing an implant having an outer surface; depositing silver and/or copper onto the outer surface of the implant; diffusing the silver and/or copper into a subsurface zone adjacent the outer surface; and oxidizing or anodizing the implant after the diffusion step to form an oxidized or anodized layer that contains at least some amount of elemental silver, elemental copper or silver or copper ions or compounds.Type: GrantFiled: July 25, 2014Date of Patent: September 17, 2019Assignee: SMITH & NEPHEW, INC.Inventors: Vivek D. Pawar, John Rose, Carolyn Weaver
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Patent number: 10399147Abstract: The present disclosure provides methods to improve the properties of a porous structure formed by a rapid manufacturing technique. Embodiments of the present disclosure increase the bonding between the micro-particles 5 on the surface of the porous structure and the porous structure itself without substantially reduce the surface area of the micro-particles. In one aspect, embodiments of the present disclosure improves the bonding while preserving or increasing the friction of the structure against adjacent materials.Type: GrantFiled: February 20, 2013Date of Patent: September 3, 2019Assignee: Smith & Nephew, Inc.Inventors: Marcus L Scott, Lu Gan, Vivek D Pawar, Stanley Tsai
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Patent number: 9971267Abstract: Oxidation resistant crosslinked ultrahigh molecular weight polyethylene (UHMWPE) is described, wherein at least two different additives in the manufacture synergistically increase the oxidation resistance of crosslinked UHMWPE. This allows the manufacture of oxidation resistant crosslinked UHMWPE using lower levels of additives and/or lower levels of crosslinking irradiation or chemicals. The lower levels of additives and/or crosslinking produce crosslinked UHMWPE having desired physical properties not possible without the synergistic interaction of the additives. This crosslinked UHMWPE may be used in medical prostheses such as in bearing components having desired physical properties such as wear resistance and oxidation resistance not possible without the synergistic interaction of the additives.Type: GrantFiled: January 31, 2017Date of Patent: May 15, 2018Assignee: Smith & Nephew, Inc.Inventors: Mark L. Morrison, Vivek D. Pawar, Lorenz Brunner, Shilesh C. Jani
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Patent number: 9775713Abstract: A device, for example a medical implant, and a method of making the same, the device having a metal or metal alloy substrate, for example CoCr, and a diffusion hardened metallic surface, for example a plasma carburized surface, contacting a non-diffusion hardened surface or a diffusion hardened surface having a diffusion hardening species different from that of the opposing surface.Type: GrantFiled: January 18, 2007Date of Patent: October 3, 2017Assignee: Smith & Nephew, Inc.Inventors: Timothy J. Band, Hamish Forster, Vivek D. Pawar, Abraham B. Salehi, Jeffrey J. Shea, Gordon B. Hunter, Shilesh C. Jani, Mark L. Morrison
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Publication number: 20170137603Abstract: Oxidation resistant crosslinked ultrahigh molecular weight polyethylene (UHMWPE) is described, wherein at least two different additives in the manufacture synergistically increase the oxidation resistance of crosslinked UHMWPE. This allows the manufacture of oxidation resistant crosslinked UHMWPE using lower levels of additives and/or lower levels of crosslinking irradiation or chemicals. The lower levels of additives and/or crosslinking produce crosslinked UHMWPE having desired physical properties not possible without the synergistic interaction of the additives. This crosslinked UHMWPE may be used in medical prostheses such as in bearing components having desired physical properties such as wear resistance and oxidation resistance not possible without the synergistic interaction of the additives.Type: ApplicationFiled: January 31, 2017Publication date: May 18, 2017Inventors: Mark L. Morrison, Vivek D. Pawar, Lorenz Brunner, Shilesh C. Jani
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Patent number: 9555161Abstract: Oxidation resistant crosslinked ultrahigh molecular weight polyethylene (UHMWPE) is described, wherein at least two different additives in the manufacture synergistically increase the oxidation resistance of crosslinked UHMWPE. This allows the manufacture of oxidation resistant crosslinked UHMWPE using lower levels of additives and/or lower levels of crosslinking irradiation or chemicals. The lower levels of additives and/or crosslinking produce crosslinked UHMWPE having desired physical properties not possible without the synergistic interaction of the additives. This crosslinked UHMWPE may be used in medical prostheses such as in bearing components having desired physical properties such as wear resistance and oxidation resistance not possible without the synergistic interaction of the additives.Type: GrantFiled: September 30, 2015Date of Patent: January 31, 2017Assignee: Smith & Nephew, Inc.Inventors: Mark L. Morrison, Vivek D. Pawar, Lorenz Brunner, Shilesh C. Jani
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Publication number: 20160250394Abstract: A method of incorporating silver and/or copper into a biomedical implant includes: providing an implant having an outer surface; depositing silver and/or copper onto the outer surface of the implant; diffusing the silver and/or copper into a subsurface zone adjacent the outer surface; and oxidizing or anodizing the implant after the diffusion step to form an oxidized or anodized layer that contains at least some amount of elemental silver, elemental copper or silver or copper ions or compounds.Type: ApplicationFiled: July 25, 2014Publication date: September 1, 2016Inventors: Vivek D. PAWAR, John Rose, Carolyn Weaver
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Publication number: 20160015857Abstract: Oxidation resistant crosslinked ultrahigh molecular weight polyethylene (UHMWPE) is described, wherein at least two different additives in the manufacture synergistically increase the oxidation resistance of crosslinked UHMWPE. This allows the manufacture of oxidation resistant crosslinked UHMWPE using lower levels of additives and/or lower levels of crosslinking irradiation or chemicals. The lower levels of additives and/or crosslinking produce crosslinked UHMWPE having desired physical properties not possible without the synergistic interaction of the additives. This crosslinked UHMWPE may be used in medical prostheses such as in bearing components having desired physical properties such as wear resistance and oxidation resistance not possible without the synergistic interaction of the additives.Type: ApplicationFiled: September 30, 2015Publication date: January 21, 2016Inventors: Mark L. Morrison, Vivek D. Pawar, Lorenz Brunner, Shilesh C. Jani
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Patent number: 9156963Abstract: Oxidation resistant crosslinked ultrahigh molecular weight polyethylene (UHMWPE) is described, wherein at least two different additives in the manufacture synergistically increase the oxidation resistance of crosslinked UHMWPE. This allows the manufacture of oxidation resistant crosslinked UHMWPE using lower levels of additives and/or lower levels of crosslinking irradiation or chemicals. The lower levels of additives and/or crosslinking produce crosslinked UHMWPE having desired physical properties not possible without the synergistic interaction of the additives. This crosslinked UHMWPE may be used in medical prostheses such as in bearing components having desired physical properties such as wear resistance and oxidation resistance not possible without the synergistic interaction of the additives.Type: GrantFiled: February 14, 2014Date of Patent: October 13, 2015Assignee: Smith & Newphew, Inc.Inventors: Mark L. Morrison, Vivek D. Pawar, Lorenz Brunner, Shilesh C. Jani
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Publication number: 20150030493Abstract: The present disclosure provides methods to improve the properties of a porous structure formed by a rapid manufacturing technique. Embodiments of the present disclosure increase the bonding between the micro-particles 5 on the surface of the porous structure and the porous structure itself without substantially reduce the surface area of the micro-particles. In one aspect, embodiments of the present disclosure improves the bonding while preserving or increasing the friction of the structure against adjacent materials.Type: ApplicationFiled: February 20, 2013Publication date: January 29, 2015Inventors: Marcus L Scott, Lu Gan, Vivek D Pawar, Stanley Tsai
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Publication number: 20140213683Abstract: Oxidation resistant crosslinked ultrahigh molecular weight polyethylene (UHMWPE) is described, wherein at least two different additives in the manufacture synergistically increase the oxidation resistance of crosslinked UHMWPE. This allows the manufacture of oxidation resistant crosslinked UHMWPE using lower levels of additives and/or lower levels of crosslinking irradiation or chemicals. The lower levels of additives and/or crosslinking produce crosslinked UHMWPE having desired physical properties not possible without the synergistic interaction of the additives. This crosslinked UHMWPE may be used in medical prostheses such as in bearing components having desired physical properties such as wear resistance and oxidation resistance not possible without the synergistic interaction of the additives.Type: ApplicationFiled: February 14, 2014Publication date: July 31, 2014Applicant: Smith & Nephew, Inc.Inventors: Mark L. Morrison, Vivek D. Pawar, Lorenz Brunner, Shilesh C. Jani
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Patent number: 8653154Abstract: Oxidation resistant crosslinked ultrahigh molecular weight polyethylene (UHMWPE) is described, wherein at least two different additives in the manufacture synergistically increase the oxidation resistance of crosslinked UHMWPE. This allows the manufacture of oxidation resistant crosslinked UHMWPE using lower levels of additives and/or lower levels of crosslinking irradiation or chemicals. The lower levels of additives and/or crosslinking produce crosslinked UHMWPE having desired physical properties not possible without the synergistic interaction of the additives. This crosslinked UHMWPE may be used in medical prostheses such as in bearing components having desired physical properties such as wear resistance and oxidation resistance not possible without the synergistic interaction of the additives.Type: GrantFiled: May 4, 2010Date of Patent: February 18, 2014Assignee: Smith & Nephew, Inc.Inventors: Mark L. Morrison, Vivek D. Pawar, Lorenz Brunner, Shilesh C. Jani
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Publication number: 20120046380Abstract: Oxidation resistant crosslinked ultrahigh molecular weight polyethylene (UHMWPE) is described, wherein at least two different additives in the manufacture synergistically increase the oxidation resistance of crosslinked UHMWPE. This allows the manufacture of oxidation resistant crosslinked UHMWPE using lower levels of additives and/or lower levels of crosslinking irradiation or chemicals. The lower levels of additives and/or crosslinking produce crosslinked UHMWPE having desired physical properties not possible without the synergistic interaction of the additives. This crosslinked UHMWPE may be used in medical prostheses such as in bearing components having desired physical properties such as wear resistance and oxidation resistance not possible without the synergistic interaction of the additives.Type: ApplicationFiled: May 4, 2010Publication date: February 23, 2012Applicant: SMITH & NEPHEW, INC.Inventors: Mark L. Morrison, Vivek D. Pawar, Lorenz Brunner, Shilesh C. Jani