Patents by Inventor Prakash Sojitra
Prakash Sojitra 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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BIODEGRADABLE MEDICAL DEVICES AND METHOD TO CONTROL DEGRADATION OF THE BIODEGRADABLE MEDICAL DEVICES
Publication number: 20170128239Abstract: An implantable biodegradable device having two or more layers composed of one or more biodegradable materials is disclosed. The two or more layers are coated with one or more drugs. The implantable biodegradable device further having one or more inert layers is composed of a biodegradable material. The one or more inert layers of the implantable biodegradable device are degraded in response to introduction of one or more external triggers when the implantable biodegradable medical device is placed within a living organism. Further, a layer of the two or more layers having a position above an inert layer is degraded prior to degradation of the inert layer. Subsequently, a layer of the two or more layers having a position below the inert layer is degraded subsequent to degradation of the inert layer.Type: ApplicationFiled: August 17, 2016Publication date: May 11, 2017Applicant: Envision Scientific Private LimitedInventors: Manish Doshi, Prakash Sojitra -
Biodegradable medical devices and method to control degradation of the biodegradable medical devices
Patent number: 9526812Abstract: An implantable biodegradable device having two or more layers composed of one or more biodegradable materials is disclosed. The two or more layers are coated with one or more drugs. The implantable biodegradable device further having one or more inert layers is composed of a biodegradable material. The one or more inert layers of the implantable biodegradable device are degraded in response to introduction of one or more external triggers when the implantable biodegradable medical device is placed within a living organism. Further, a layer of the two or more layers having a position above an inert layer is degraded prior to degradation of the inert layer. Subsequently, a layer of the two or more layers having a position below the inert layer is degraded subsequent to degradation of the inert layer.Type: GrantFiled: January 10, 2012Date of Patent: December 27, 2016Assignee: ENVISION SCIENTIFIC PRIVATE LIMITEDInventors: Manish Doshi, Pankaj Gandhi, Ronak Choksi, Prakash Sojitra -
Patent number: 9259518Abstract: A drug-delivering insertable medical device for treating a medical condition associated with a body lumen is disclosed. The drug-delivering insertable medical device includes an outer surface coated with two or more nano-carriers having two or more average diameters. A nano-carrier of the two or more nano-carriers has an average diameter suitable for penetrating one or more layers of two or more layers of the body lumen. The nano-carrier includes a drug surrounded by an encapsulating medium. The encapsulating medium includes one or more of a biological agent, a blood excipient, and a phospholipid.Type: GrantFiled: July 15, 2014Date of Patent: February 16, 2016Assignee: ENVISION SCIENTIFIC PRIVATE LIMITEDInventors: Manish Doshi, Prakash Sojitra, Alexandre Abizaid
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Patent number: 9168360Abstract: A balloon catheter assembly for delivering nano-carriers to bifurcation lesions in one or more of a main branch and a side branch of a blood vessel bifurcation within 30 to 90 seconds is provided. The balloon catheter assembly includes two or more balloons designed for use in the blood vessel bifurcation. The balloon catheter assembly may also include one or more stents. A surface of one or more of the two or more balloons is coated with the nano-carriers. Stents, when included, may also be coated with the nano-carriers. The nano-carriers include one or more drugs encapsulated with one or more biological agents.Type: GrantFiled: November 18, 2013Date of Patent: October 27, 2015Assignee: CONCEPT MEDICAL RESEARCH PRIVATE LIMITEDInventors: Manish Doshi, Divyesh Sherdiwala, Prakash Sojitra
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Patent number: 9162014Abstract: The invention discloses an insertable medical device for delivering one or more pro-healing agents to a site of deployment of a stent in a blood vessel. The surface of the insertable medical device is coated with nano-carriers that include the one or more pro-healing agents encapsulated with one or more biological agents. The nano-carriers are released when the insertable medical device is expanded at the site. The nano-carriers thus released penetrate tissues at the site resulting in dissolution of the one or more biological agents. Thereafter, the one or more pro-healing agents are released from the nano-carriers at the site. Thus, an in-tissue release of the one or more pro-healing agents at the site is achieved thereby improving endothealization, extracellular matrix formation and healing at the site post deployment of the stent in the blood vessel.Type: GrantFiled: January 17, 2011Date of Patent: October 20, 2015Assignee: Concept Medical Research Private LimitedInventors: Manish Doshi, Divyesh Sherdiwala, Prakash Sojitra
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Publication number: 20150202062Abstract: A drug-delivering medical device for treating a medical condition associated with a body lumen is provided. The drug-delivering medical device includes an outer abluminal aspect having a micro-porous surface embedded with nano-carriers having an assortment of average diameters. The nano-carriers penetrate one or more layers of a wall of the body lumen. The micro-porous surface and the nano-carriers enable the device to release a drug for up to 60 days.Type: ApplicationFiled: November 28, 2014Publication date: July 23, 2015Applicant: Envision Scientific Private LimitedInventors: MANISH DOSHI, PRAKASH SOJITRA, ALEXANDRE ABIZAID
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Patent number: 9034363Abstract: A method for delivering at least one drug at a target site in a blood vessel for treating at least one of an acute myocardial infarction, a thrombus containing lesion and a saphenous-vein graft lesion is disclosed. The method includes delivering nano-carriers at the target site. The nano-carriers include one or more drugs encapsulated with a first biological agent. The nano-carriers further include a second biological agent in contact with one or more of the first biological agent and the one or more drugs. The first biological agent and the second biological agent have a first dissolution rate and a second dissolution rate respectively. The first dissolution rate is different from the second dissolution rate. The one or more drugs are released at the target site from the nano-carriers at a first release rate and a second release rate in response to dissolution of the first biological agent and the second biological agent, respectively.Type: GrantFiled: January 6, 2011Date of Patent: May 19, 2015Assignee: CONCEPT MEDICAL RESEARCH PRIVATE LIMITEDInventors: Manish Doshi, Divyesh Sherdiwala, Prakash Sojitra
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Publication number: 20150086600Abstract: A drug-delivering insertable medical device for treating a medical condition associated with a body lumen is disclosed. The drug-delivering insertable medical device includes an outer surface coated with two or more nano-carriers having two or more average diameters. A nano-carrier of the two or more nano-carriers has an average diameter suitable for penetrating one or more layers of two or more layers of the body lumen. The nano-carrier includes a drug surrounded by an encapsulating medium. The encapsulating medium includes one or more of a biological agent, a blood excipient, and a phospholipid.Type: ApplicationFiled: July 15, 2014Publication date: March 26, 2015Applicant: ENVISION SCIENTIFIC PRIVATE LIMITEDInventors: MANISH DOSHI, PRAKASH SOJITRA, ALEXANDRE ABIZAID
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Publication number: 20150079160Abstract: A drug-delivering medical device for delivering a drug to a target site in a human body is disclosed. The drug-delivering medical device may have a hydrophilic surface, with one or more portions of the hydrophilic surface coated with one or more nano-carriers bearing one or more drugs. Each nano-carrier may include a drug surrounded by an encapsulating medium. As the drug is surrounded by the encapsulating medium, the surface of each nano-carrier can be devoid of the respective drug. A non-implantable medical device coated with nano-carriers can deliver one or more drugs to a blood vessel, organ cavity, sac, capsule, lining, layer, coating, membrane, connective tissue, fluid surrounding an organ, and so forth.Type: ApplicationFiled: August 12, 2014Publication date: March 19, 2015Applicant: CONCEPT MEDICAL RESEARCH PRIVATE LIMITEDInventors: MANISH DOSHI, Prakash Sojitra, Pedro A Lemos Neto
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Patent number: 8801662Abstract: A drug-delivering medical device for delivering a drug to a target site in a body lumen is disclosed. The drug-delivering medical device includes a balloon catheter and an inflatable balloon positioned on the balloon catheter. The inflatable balloon has a hydrophilic surface. One or more portions of the hydrophilic surface are coated with two or more nano-carriers. A nano-carrier of the two or more nano-carriers includes a drug surrounded by an encapsulating medium. As the drug is surrounded by the encapsulating medium, the surface of the nano-carrier is devoid of the drug. When the inflatable balloon is inflated upon coming in proximity to a target site in the body lumen, about 30% to 80% of the two or more nano-carriers are released from the hydrophilic surface within 15-90 seconds.Type: GrantFiled: May 21, 2010Date of Patent: August 12, 2014Assignee: Concept Medical, IncInventors: Manish Doshi, Divyesh Sherdiwala, Prakash Sojitra, Ashwin Vyas, Pankaj Gandhi
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Patent number: 8778013Abstract: A drug-delivering insertable medical device for treating a medical condition associated with a body lumen is disclosed. The drug-delivering insertable medical device includes an outer surface coated with two or more nano-carriers having two or more average diameters. A nano-carrier of the two or more nano-carriers has an average diameter suitable for penetrating one or more layers of two or more layers of the body lumen. The nano-carrier includes a drug surrounded by an encapsulating medium. The encapsulating medium includes one or more of a biological agent, a blood excipient, and a phospholipid.Type: GrantFiled: May 21, 2010Date of Patent: July 15, 2014Assignee: Envision Scientific Private LtdInventors: Manish Doshi, Divyesh Sherdiwala, Prakash Sojitra, Ashwin Vyas, Pankaj Gandhi, Zagabathuni Venkata Panchakshari Murthy
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Patent number: 8778379Abstract: The invention discloses a method of coating a medical device. The method includes applying a coating composition on the medical device to form a layer on the medical device. The coating composition includes one or more of one or more biological agents and heparin dissolved in a mixture of a first solvent and a second solvent. The first solvent and the second solvent have different evaporation temperatures. Subsequently, at least a part of one of the first solvent and the second solvent present in the coating composition is evaporated to create a plurality of pores in the layer. Thereafter, one or more drugs are deposited in the plurality of pores. When the medical device is positioned and expanded at a target site, the one or more drugs are released from the plurality of pores.Type: GrantFiled: January 19, 2011Date of Patent: July 15, 2014Assignee: Concept Medical Research Private LtdInventors: Manish Doshi, Divyesh Sherdiwala, Prakash Sojitra
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Publication number: 20140142503Abstract: A balloon catheter assembly for delivering nano-carriers to bifurcation lesions in one or more of a main branch and a side branch of a blood vessel bifurcation within 30 to 90 seconds is provided. The balloon catheter assembly includes two or more balloons designed for use in the blood vessel bifurcation. The balloon catheter assembly may also include one or more stents. A surface of one or more of the two or more balloons is coated with the nano-carriers. Stents, when included, may also be coated with the nano-carriers. The nano-carriers include one or more drugs encapsulated with one or more biological agents.Type: ApplicationFiled: November 18, 2013Publication date: May 22, 2014Applicant: CONCEPT MEDICAL, INC.Inventors: MANISH DOSHI, Divyesh Sherdiwala, Prakash Sojitra
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BIODEGRADABLE MEDICAL DEVICES AND METHOD TO CONTROL DEGRADATION OF THE BIODEGRADABLE MEDICAL DEVICES
Publication number: 20140107615Abstract: An implantable biodegradable device having two or more layers composed of one or more biodegradable materials is disclosed. The two or more layers are coated with one or more drugs. The implantable biodegradable device further having one or more inert layers is composed of a biodegradable material. The one or more inert layers of the implantable biodegradable device are degraded in response to introduction of one or more external triggers when the implantable biodegradable medical device is placed within a living organism. Further, a layer of the two or more layers having a position above an inert layer is degraded prior to degradation of the inert layer. Subsequently, a layer of the two or more layers having a position below the inert layer is degraded subsequent to degradation of the inert layer.Type: ApplicationFiled: January 10, 2012Publication date: April 17, 2014Inventors: Manish Doshi, Pankaj Gandhi, Ronak Choksi, Prakash Sojitra -
Patent number: 8585642Abstract: The invention discloses a balloon catheter assembly for delivering nano-carriers to bifurcation lesions in one or more of a main branch and a side branch of a blood vessel bifurcation within 30 to 90 seconds. The balloon catheter assembly includes two or more balloons designed for use in the blood vessel bifurcation. A surface of one or more of the two or more balloons is coated with the nano-carriers. The nano-carriers include one or more drugs encapsulated with one or more biological agents.Type: GrantFiled: January 17, 2011Date of Patent: November 19, 2013Assignee: Concept Medical Research Private LimitedInventors: Manish Doshi, Divyesh Sherdiwala, Prakash Sojitra
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Patent number: 8529983Abstract: A coating system for coating an Insertable Medical Device (IMD) with one or more drugs is disclosed. The coating system includes a spray nozzle unit for coating the IMD with one or more drugs. The IMD includes a guiding member, a coating member and a supporting member. The IMD is passed through a protection tube such that the guiding member is located within the protection tube and an end of the supporting member is connected to a holder to expose the coating member of the IMD to the spray nozzle unit. The protection tube is received by a mandrel fixture which includes a circular disc for holding and rotating the protection tube and the IMD within the protection tube. When the protection tube along with the IMD is rotated, the spray nozzle unit coats the coating member of the IMD with the one or more drugs.Type: GrantFiled: May 21, 2010Date of Patent: September 10, 2013Assignee: Envision Scientific Pvt. Ltd.Inventors: Manish Doshi, Divyesh Sherdiwala, Prakash Sojitra, Ashwin Vyas, Pankaj Gandhi, Bhavesh Chevli, Yavar Pothiawala
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Publication number: 20130216719Abstract: The invention provides a method and apparatus for coating a substrate. The apparatus includes one or more enclosures positioned at an angle relative to a plane. Each enclosure is capable of receiving one or more substrates. The one or more enclosures include one or more inlets for receiving a coating fluid. The coating fluid flows in a pre-defined direction to coat the one or more substrates with the coating fluid. The one or more enclosures are positioned at the angle relative to the plane by one or more supporting structures and are dynamically adjustable to enable the flow of coating fluid in pre-defined direction.Type: ApplicationFiled: October 25, 2011Publication date: August 22, 2013Applicant: ENVISION SCIENTIFIC PRIVATE LIMITEDInventors: Manish Doshi, Ronak Choksi, Prakash Sojitra
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Publication number: 20120321670Abstract: A method of preparing nano-carriers is disclosed. The method includes mixing an organic solution of a drug and an organic solution of a biological agent separately with a predetermined amount of water having one or more dissolved surfactants to obtain a first mixture and a second mixture respectively. Subsequently, the first mixture and the second mixture are homogenized separately to obtain a solution of nano-crystals of the drug and a solution of nano-particles of the biological agent respectively. Thereafter, the solution of nano-crystals of the drug and the solution of nano-particles of the biological agent are together subjected to an ultra-sound homogenization to obtain a solution of nano-carriers. An interfacial extraction and/or a dialysis are then performed on the solution of nano-carriers to obtain the nano-carriers. Formulations of the nano-carriers are also disclosed.Type: ApplicationFiled: January 6, 2011Publication date: December 20, 2012Applicants: Envision Scientific Private Limited, Concept Medical Research Private limitedInventors: Manish Doshi, Divyesh Sherdiwala, Prakash Sojitra
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Publication number: 20120315300Abstract: The invention discloses a method of coating a medical device. The method includes applying a coating composition on the medical device to form a layer on the medical device. The coating composition includes one or more of one or more biological agents and heparin dissolved in a mixture of a first solvent and a second solvent. The first solvent and the second solvent have different evaporation temperatures. Subsequently, at least a part of one of the first solvent and the second solvent present in the coating composition is evaporated to create a plurality of pores in the layer. Thereafter, one or more drugs are deposited in the plurality of pores. When the medical device is positioned and expanded at a target site, the one or more drugs are released from the plurality of pores.Type: ApplicationFiled: January 19, 2011Publication date: December 13, 2012Applicants: Envision Scientific Private Limited, Concept Medical Research Private limitedInventors: Manish Doshi, Divyesh Sherdiwala, Prakash Sojitra
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Publication number: 20120283635Abstract: The invention discloses a balloon catheter assembly for delivering nano-carriers to bifurcation lesions in one or more of a main branch and a side branch of a blood vessel bifurcation within 30 to 90 seconds. The balloon catheter assembly includes two or more balloons designed for use in the blood vessel bifurcation. A surface of one or more of the two or more balloons is coated with the nano-carriers. The nano-carriers include one or more drugs encapsulated with one or more biological agents.Type: ApplicationFiled: January 17, 2011Publication date: November 8, 2012Applicant: Concept Medical Research Private LimitedInventors: Manish Doshi, Divyesh Sherdiwala, Prakash Sojitra