Patents by Inventor Kamal Ramzipoor
Kamal Ramzipoor 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: 8858611Abstract: Sterilization methods for implantable prostheses are described where a polymeric stent may be sterilized, e.g., via ETO sterilization, at a temperature below a glass transition temperature of the stent. A separate delivery catheter may be sterilized separately and the stent and delivery catheter may then be combined in an aseptic or semi-aseptic environment and sterilized as an assembled system such that the requirements for sterilizing the system are relatively lower. Additionally and/or alternatively, valve and filter assemblies may be used with an optional mandrel assembly for maintaining sterility of the internal components of a catheter system.Type: GrantFiled: July 3, 2013Date of Patent: October 14, 2014Assignee: Amaranth Medical, PteInventors: Kamal Ramzipoor, Chang Y. Lee, Fozan O. El-Nounou
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Publication number: 20140236217Abstract: The apparatus for deployment of a therapeutic device such as a micro-coil detachably mounts the therapeutic device to a distal portion of a pusher member. In one embodiment, the therapeutic device is detachably mounted to the distal portion of the pusher member by a tubular collar that can be heated by a heater such as an electrical resistance coil to expand the collar and release and deploy the therapeutic device. The apparatus for deployment of a therapeutic device such as a micro-coil may also provide for a pusher member and a connector fiber for securing the therapeutic device to the pusher member. The connector fiber passes through a heater within the distal portion of the pusher member, for heating and breaking the connector fiber to release the therapeutic device when a desired placement of the therapeutic device within the vasculature is achieved.Type: ApplicationFiled: April 23, 2014Publication date: August 21, 2014Applicant: DEPUY SYNTHES PRODUCTS, LLInventors: Deepak Gandhi, Kamal Ramzipoor
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Publication number: 20140236285Abstract: Tubular casting processes, such as dip-coating, may be used to form substrates from polymeric solutions which may be used to fabricate implantable devices such as stents. The polymeric substrates may have multiple layers which retain the inherent properties of their starting materials and which are sufficiently ductile to prevent brittle fracture. Parameters such as the number of times the mandrel is immersed, the duration of time of each immersion within the solution, as well as the delay time between each immersion or the drying or curing time between dips and withdrawal rates of the mandrel from the solution may each be controlled to result in the desired mechanical characteristics. Additional post-processing may also be utilized to further increase strength of the substrate or to alter its shape.Type: ApplicationFiled: April 23, 2014Publication date: August 21, 2014Applicant: AMARANTH MEDICAL PTE.Inventors: Kamal RAMZIPOOR, Alfred N. K. CHIA, Liwei WANG
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Patent number: 8728142Abstract: The apparatus for deployment of a therapeutic device such as a micro-coil detachably mounts the therapeutic device to a distal portion of a pusher member. In one embodiment, the therapeutic device is detachably mounted to the distal portion of the pusher member by a tubular collar that can be heated by a heater such as an electrical resistance coil to expand the collar and release and deploy the therapeutic device. The apparatus for deployment of a therapeutic device such as a micro-coil may also provide for a pusher member and a connector fiber for securing the therapeutic device to the pusher member. The connector fiber passes through a heater within the distal portion of the pusher member, for heating and breaking the connector fiber to release the therapeutic device when a desired placement of the therapeutic device within the vasculature is achieved.Type: GrantFiled: January 23, 2012Date of Patent: May 20, 2014Assignee: Depuy Synthes Products, LLCInventors: Deepak Gandhi, Kamal Ramzipoor
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Publication number: 20140135818Abstract: The apparatus for deployment of an intravascular therapeutic device, includes an elongated, flexible pusher member and a therapeutic device connected to a severable portion of a first connector member mounted to the flexible pusher member with an elongated second connector member connected to the therapeutic device. The first connector member or second connector member may be capable of being broken by heat, and a heat source is provided for heating and breaking the first connector member or the second connector member to release the therapeutic device.Type: ApplicationFiled: January 23, 2014Publication date: May 15, 2014Applicant: DEPUY SYNTHES PRODUCTS, LLCInventors: Deepak R. Gandhi, Kamal Ramzipoor, Henry N. Padilla
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Patent number: 8652163Abstract: The apparatus for deployment of an intravascular therapeutic device, includes an elongated, flexible pusher member and a therapeutic device connected to a severable portion of a first connector member mounted to the flexible pusher member with an elongated second connector member connected to the therapeutic device. The first connector member or second connector member may be capable of being broken by heat, and a heat source is provided for heating and breaking the first connector member or the second connector member to release the therapeutic device.Type: GrantFiled: September 28, 2012Date of Patent: February 18, 2014Assignee: DePuy Synthes Products, LLCInventors: Henry N. Padilla, Deepak R. Gandhi, Kamal Ramzipoor
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Publication number: 20140039600Abstract: Tubular casting processes, such as dip-coating, may be used to form substrates from polymeric solutions which may be used to fabricate implantable devices such as stents. The polymeric substrates may have multiple layers which retain the inherent properties of their starting materials and which are sufficiently ductile to prevent brittle fracture. Parameters such as the number of times the mandrel is immersed, the duration of time of each immersion within the solution, as well as the delay time between each immersion or the drying or curing time between dips and withdrawal rates of the mandrel from the solution may each be controlled to result in the desired mechanical characteristics. Additional post-processing may also be utilized to further increase strength of the substrate or to alter its shape.Type: ApplicationFiled: September 18, 2013Publication date: February 6, 2014Applicant: AMARANTH MEDICAL PTE.Inventors: Kamal RAMZIPOOR, Alfred N. K. CHIA, Liwei WANG
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Publication number: 20140035192Abstract: Tubular casting processes, such as dip-coating, may be used to form substrates from polymeric solutions which may be used to fabricate implantable devices such as stents. The polymeric substrates may have multiple layers which retain the inherent properties of their starting materials and which are sufficiently ductile to prevent brittle fracture. Parameters such as the number of times the mandrel is immersed, the duration of time of each immersion within the solution, as well as the delay time between each immersion or the drying or curing time between dips and withdrawal rates of the mandrel from the solution may each be controlled to result in the desired mechanical characteristics. Additional post-processing may also be utilized to further increase strength of the substrate or to alter its shape.Type: ApplicationFiled: September 18, 2013Publication date: February 6, 2014Applicant: AMARANTH MEDICAL PTE.Inventors: Kamal RAMZIPOOR, Alfred N. K. CHIA, Liwei WANG
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Publication number: 20130294979Abstract: Sterilization methods for implantable prostheses are described where a polymeric stent may be sterilized, e.g., via ETO sterilization, at a temperature below a glass transition temperature of the stent. A separate delivery catheter may be sterilized separately and the stent and delivery catheter may then be combined in an aseptic or semi-aseptic environment and sterilized as an assembled system such that the requirements for sterilizing the system are relatively lower. Additionally and/or alternatively, valve and filter assemblies may be used with an optional mandrel assembly for maintaining sterility of the internal components of a catheter system.Type: ApplicationFiled: July 3, 2013Publication date: November 7, 2013Inventors: Kamal RAMZIPOOR, Chang Y. LEE, Fozan O. EL-NOUNOU
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Patent number: 8574493Abstract: Sterilization methods for implantable prostheses are described, where a polymeric stent may be sterilized, e.g., via ETO sterilization, at a temperature below a glass transition temperature of the stent. A separate delivery catheter may be sterilized separately and the stent and delivery catheter may then be combined in an aseptic, or semi-aseptic environment and sterilized as an assembled system such that the requirements for sterilizing the system are relatively lower. Additionally and/or alternatively, valve and filter assemblies may be used with an optional mandrel assembly for maintaining sterility of the internal components of a catheter system.Type: GrantFiled: November 7, 2012Date of Patent: November 5, 2013Assignee: Amaranth Medical Pte.Inventors: Kamal Ramzipoor, Chang Y. Lee, Fozan O. El-Nounou
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Patent number: 8444661Abstract: Devices, systems and methods for removing foreign bodies within a body lumen are disclosed. An unfolding balloon catheter may include an elongated shaft having an intussuscepting balloon that can be actuated within a body lumen to capture and retrieve an intravascular device. The balloon may be configured to radially and/or axially expand when inflated, enveloping the intravascular device. In certain embodiments, the balloon may be formed by folding the ends of a distensible member inwardly, and then bonding the ends of the distensible member to the elongated shaft to form an expandable sleeve. An adhesive layer located along a portion of the elongated shaft may be used to temporarily secure the balloon to the elongated shaft.Type: GrantFiled: June 28, 2007Date of Patent: May 21, 2013Assignees: Stryker Corporation, Stryker NV Operations LimitedInventors: Ajitkumar B. Nair, Kamal Ramzipoor, Tra Huong Ngo, Hieu T. Nguyen, Maggie Le
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Patent number: 8309023Abstract: Sterilization methods for implantable prostheses are described where a polymeric stent may be sterilized, e.g., via ETO sterilization, at a temperature below a glass transition temperature of the stent. A separate delivery catheter may be sterilized separately and the stent and delivery catheter may then be combined in an aseptic or semi-aseptic environment and sterilized as an assembled system such that the requirements for sterilizing the system are relatively lower. Additionally and/or alternatively, valve and filter assemblies may be used with an optional mandrel assembly for maintaining sterility of the internal components of a catheter system.Type: GrantFiled: December 29, 2009Date of Patent: November 13, 2012Assignee: Amaranth Medical Pte.Inventors: Kamal Ramzipoor, Chang Y. Lee, Fozan O. El-Nounou
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Patent number: 8298256Abstract: The apparatus for deployment of an intravascular therapeutic device, includes an elongated, flexible pusher member and a therapeutic device connected to a severable portion of a first connector member mounted to the flexible pusher member with an elongated second connector member connected to the therapeutic device. The first connector member or second connector member may be capable of being broken by heat, and a heat source is provided for heating and breaking the first connector member or the second connector member to release the therapeutic device.Type: GrantFiled: June 11, 2010Date of Patent: October 30, 2012Assignee: Micrus Endovascular CorporationInventors: Deepak R. Gandhi, Kamal Ramzipoor, Henry N. Padilla
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Publication number: 20120271344Abstract: An implant assembly comprises an elongated pusher member, and an implantable device (e.g., a vaso-occlusive device) mounted to the distal end of the pusher member. The implant assembly further comprises an electrolytically severable joint disposed on the pusher member, wherein the implantable device detaches from the pusher member when the severable joint is severed, and a return electrode carried by the distal end of the pusher member (e.g., a coil disposed about the pusher member) in proximity to, but electrically isolated from, the severable joint. The implant assembly further comprises a terminal carried by the proximal end of the pusher member in electrical communication with the severable joint.Type: ApplicationFiled: July 2, 2012Publication date: October 25, 2012Applicants: STRYKER NV OPERATIONS LIMITED, STRYKER CORPORATIONInventors: Russell FORD, Scott MCGILL, Clifford TEOH, Michael WILLIAMS, Kamal RAMZIPOOR, Like QUE, Ann HUANG, Elena OO, Christina MA, Stella CHU
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Publication number: 20120232643Abstract: Tubular casting processes, such as dip-coating, may be used to form substrates from polymeric solutions which may be used to fabricate implantable devices such as stents. The polymeric substrates may have multiple layers which retain the inherent properties of their starting materials and which are sufficiently ductile to prevent brittle fracture. Parameters such as the number of times the mandrel is immersed, the duration of time of each immersion within the solution, as well as the delay time between each immersion or the drying or curing time between dips and withdrawal rates of the mandrel from the solution may each be controlled to result in the desired mechanical characteristics. Additional post-processing may also be utilized to further increase strength of the substrate or to alter its shape.Type: ApplicationFiled: May 21, 2012Publication date: September 13, 2012Applicant: AMARANTH MEDICAL PTE.Inventors: Kamal RAMZIPOOR, Alfred N. K. CHIA, Liwei WANG
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Publication number: 20120232644Abstract: Tubular casting processes, such as dip-coating, may be used to form substrates from polymeric solutions which may be used to fabricate implantable devices such as stents. The polymeric substrates may have multiple layers which retain the inherent properties of their starting materials and which are sufficiently ductile to prevent brittle fracture. Parameters such as the number of times the mandrel is immersed, the duration of time of each immersion within the solution, as well as the delay time between each immersion or the drying or curing time between dips and withdrawal rates of the mandrel from the solution may each be controlled to result in the desired mechanical characteristics. Additional post-processing may also be utilized to further increase strength of the substrate or to alter its shape.Type: ApplicationFiled: May 21, 2012Publication date: September 13, 2012Inventors: Kamal RAMZIPOOR, Alfred N. K. CHIA, Liwei WANG, Chang Yeul LEE
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Publication number: 20120184979Abstract: The apparatus for deployment of a therapeutic device such as a micro-coil detachably mounts the therapeutic device to a distal portion of a pusher member. In one embodiment, the therapeutic device is detachably mounted to the distal portion of the pusher member by a tubular collar that can be heated by a heater such as an electrical resistance coil to expand the collar and release and deploy the therapeutic device. The apparatus for deployment of a therapeutic device such as a micro-coil may also provide for a pusher member and a connector fiber for securing the therapeutic device to the pusher member. The connector fiber passes through a heater within the distal portion of the pusher member, for heating and breaking the connector fiber to release the therapeutic device when a desired placement of the therapeutic device within the vasculature is achieved.Type: ApplicationFiled: January 23, 2012Publication date: July 19, 2012Applicant: MICRUS CORPORATIONInventors: Deepak Gandhi, Kamal Ramzipoor
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Patent number: 8221483Abstract: An implant assembly comprises an elongated pusher member, and an implantable device (e.g., a vaso-occlusive device) mounted to the distal end of the pusher member. The implant assembly further comprises an electrolytically severable joint disposed on the pusher member, wherein the implantable device detaches from the pusher member when the severable joint is severed, and a return electrode carried by the distal end of the pusher member (e.g., a coil disposed about the pusher member) in proximity to, but electrically isolated from, the severable joint. The implant assembly further comprises a terminal carried by the proximal end of the pusher member in electrical communication with the severable joint.Type: GrantFiled: May 16, 2008Date of Patent: July 17, 2012Assignees: Stryker Corporation, Stryker NV Operations LimitedInventors: Russell Ford, Scott McGill, Clifford Teoh, Michael Williams, Kamal Ramzipoor, Like Que, Ann Huang, Elena Oo, Christina Ma, Stella Chu
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Patent number: 8206635Abstract: Tubular casting processes, such as dip-coating, may be used to form substrates from polymeric solutions which may be used to fabricate implantable devices such as stents. The polymeric substrates may have multiple layers which retain the inherent properties of their starting materials and which are sufficiently ductile to prevent brittle fracture. Parameters such as the number of times the mandrel is immersed, the duration of time of each immersion within the solution, as well as the delay time between each immersion or the drying or curing time between dips and withdrawal rates of the mandrel from the solution may each be controlled to result in the desired mechanical characteristics. Additional post-processing may also be utilized to further increase strength of the substrate or to alter its shape.Type: GrantFiled: June 20, 2008Date of Patent: June 26, 2012Assignee: Amaranth Medical Pte.Inventors: Kamal Ramzipoor, Alfred N. K. Chia, Liwei Wang
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Patent number: 8206636Abstract: Tubular casting processes, such as dip-coating, may be used to form substrates from polymeric solutions which may be used to fabricate implantable devices such as stents. The polymeric substrates may have multiple layers which retain the inherent properties of their starting materials and which are sufficiently ductile to prevent brittle fracture. Parameters such as the number of times the mandrel is immersed, the duration of time of each immersion within the solution, as well as the delay time between each immersion or the drying or curing time between dips and withdrawal rates of the mandrel from the solution may each be controlled to result in the desired mechanical characteristics. Additional post-processing may also be utilized to further increase strength of the substrate or to alter its shape.Type: GrantFiled: June 19, 2009Date of Patent: June 26, 2012Assignee: Amaranth Medical Pte.Inventors: Kamal Ramzipoor, Alfred N. K. Chia, Liwei Wang, Chang Y. Lee