Patents by Inventor Lisa Tam
Lisa Tam 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: 7322358Abstract: A female condom is provided that includes a pouch of resilient membranous material and a hydrophilic cling mechanism. According to an embodiment of the invention, the cling mechanism includes three or more foam cling elements attached to an outer surface of the pouch. Upon insertion, the foam cling elements cling lightly to vaginal walls proximate a transition zone between the vagina's introitus and its rugated internal tissue. The foam cling elements may be shaped to permit them to nestle into a user's rugated internal vaginal tissue. An inserter may be coupled to the pouch for facilitating insertion of the condom. The inserter may retain a distal portion of the pouch in a collapsed form. The cling mechanism may be contained within the dissolvable inserter. The inserter may be dissolvable in the presence of vaginal moisture. Methods are also provided for collapsing the pouch and compressing it into an insertion package.Type: GrantFiled: September 19, 2003Date of Patent: January 29, 2008Assignee: PathInventors: Lisa Tam, Glenn D. Austin, Yancy Seamans, William Robert Van Lew, Jr.
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Publication number: 20070098595Abstract: The invention discloses a system, method and medical device for measuring various hemoglobin derivatives, such as oxyhemoglobin, reduced hemoglobin, partial hemoglobin, carboxyhemoglobin, methemoglobin and sulfhemoglobin in whole or in hemolyzed blood. The novel method uses a statistical approach to enable the design of a portable co-oximeter. This portable co-oximeter utilizes compact light sources, such as light emitting diodes or light emitting lasers, to emit light in the visible region. Being portable, the device is a point-of-care device that can be used in emergency situations by paramedics, in the emergency room, and in a physicians office to detect and measure the concentrations and/or percentages of functional and non-functional hemoglobin derivatives in a patient's blood.Type: ApplicationFiled: February 23, 2006Publication date: May 3, 2007Applicant: Stat-Chem, Inc.Inventors: Lisa Tam, James Dabney, Michael Burnam, Martin Patko
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Patent number: 7047975Abstract: Employing the known “tensegrity” principle, a female condom is configured such that when the condom is inserted into a woman's vagina, the woman's introitus acts on a proximal section of an elongated pouch extending between internal and external biasing members (e.g., rings) of the condom. Inward compressive forces exerted by the introitus on the inner ring of the condom cause the inner ring to be pushed distally within the vaginal canal, and the proximal pouch section to become a tension member pulling against the external ring. This causes a “tenting” of the proximal pouch section against the introitus. The resulting interaction of compression and tensile forces (a tensegrity effect) serves to provide the condom with a high degree of internal and external stability, including resistance to twisting and slippage.Type: GrantFiled: August 3, 2001Date of Patent: May 23, 2006Assignee: PathInventors: Glenn D. Austin, Lisa Tam
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Patent number: 7029628Abstract: The invention discloses a system, method and medical device for measuring various hemoglobin derivatives, such as oxyhemoglobin, reduced hemoglobin, partial hemoglobin, carboxyhemoglobin, methemoglobin and sulfhemoglobin in whole or in hemolyzed blood. The novel method uses a statistical approach to enable the design of a portable co-oximeter. This portable co-oximeter utilizes compact light sources, such as light emitting diodes or light emitting lasers, to emit light in the visible region. Being portable, the device is a point-of-care device that can be used in emergency situations by paramedics, in the emergency room, and in a physicians office to detect and measure the concentrations and/or percentages of functional and non-functional hemoglobin derivatives in a patient's blood.Type: GrantFiled: December 28, 2000Date of Patent: April 18, 2006Assignee: Stat-Chem Inc.Inventors: Lisa A. Tam, James Huntington Dabney, Michael H. Burnam, Martin J. Patko
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Publication number: 20040107969Abstract: A female condom is provided that includes a pouch of resilient membranous material and a hydrophilic cling mechanism. According to an embodiment of the invention, the cling mechanism includes three or more foam cling elements attached to an outer surface of the pouch. Upon insertion, the foam cling elements cling lightly to vaginal walls proximate a transition zone between the vagina's introitus and its rugated internal tissue. The foam cling elements may be shaped to permit them to nestle into a user's rugated internal vaginal tissue. An inserter may be coupled to the pouch for facilitating insertion of the condom. The inserter may retain a distal portion of the pouch in a collapsed form. The cling mechanism may be contained within the dissolvable inserter. The inserter may be dissolvable in the presence of vaginal moisture. Methods are also provided for collapsing the pouch and compressing it into an insertion package.Type: ApplicationFiled: September 19, 2003Publication date: June 10, 2004Applicant: PATHInventors: Lisa Tam, Glenn D. Austin, Yancy Seamans, William Robert Van Lew
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Patent number: 6685618Abstract: Disclosed is a thin film radiation source, which may be used to deliver a radioactive dose to a site in a body lumen. The source comprises a thin flexible substrate, and a layer of radioisotope attached thereto. The source may further comprise additional layers such as one or more tie layers disposed between the substrate and the radioisotope layer and one or more outer coating layers. In one embodiment, the source is wrapped around an inflatable balloon. Inflation of the balloon at a treatment site positions the source directly adjacent to the vessel wall, and allows irradiation of the site following or simultaneously with a balloon angioplasty, stent implantation, or stent sizing procedure.Type: GrantFiled: August 31, 2001Date of Patent: February 3, 2004Assignee: Endologix, Inc.Inventors: Lisa A. Tam, Brett A. Trauthen
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Publication number: 20030208096Abstract: Disclosed is a thin film radiation source, which may be used to deliver a radioactive dose to a site in a body lumen. The source comprises a thin flexible substrate, and a layer of radioisotope attached thereto. The source may further comprise additional layers such as one or more tie layers disposed between the substrate and the radioisotope layer and one or more outer coating layers. In one embodiment, the source is wrapped around an inflatable balloon. Inflation of the balloon at a treatment site positions the source directly adjacent to the vessel wall, and allows irradiation of the site following or simultaneously with a balloon angioplasty, stent implantation, or stent sizing procedure.Type: ApplicationFiled: August 31, 2001Publication date: November 6, 2003Inventors: Lisa A. Tam, Brett A. Trauthen
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Publication number: 20030166990Abstract: Disclosed are sources and methods for delivering a radioactive dose to a site in a body lumen. The sources are preferably mounted on a balloon or other expandable or deployable mechanical structure. The source and methods enable delivery of a clinically significant dose of radiation into a vessel wall in a relatively short time while using a relatively low activity. The sources also enable delivery of a substantially uniform dose into the vessel wall, whether or not such delivery is through the wall of a stent.Type: ApplicationFiled: December 9, 2002Publication date: September 4, 2003Inventors: Brett Trauthen, Lisa Tam, Robert Fazio, Michael Crocker, Edward F. Smith, Gary Strathern
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Publication number: 20030163017Abstract: Disclosed is a sealed radiation source, which may be used to deliver a radioactive dose to a site in a body lumen. The source comprises a thin flexible substrate, and a layer of radioisotope attached thereto. The source may further comprise additional layers such as one or more tie layers disposed between the substrate and the radioisotope layer and one or more outer coating layers. In one embodiment, the source is wrapped around an inflatable balloon. Inflation of the balloon at a treatment site positions the source directly adjacent to the vessel wall, and allows irradiation of the site following or simultaneously with a balloon angioplasty, stent implantation, or stent sizing procedure.Type: ApplicationFiled: October 1, 2002Publication date: August 28, 2003Inventors: Lisa A. Tam, Brett A. Trauthen
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Patent number: 6491619Abstract: Disclosed are sources and methods for delivering a radioactive dose to a site in a body lumen. The sources are preferably mounted on a balloon or other expandable or deployable mechanical structure. The source and methods enable delivery of a clinically significant dose of radiation into a vessel wall in a relatively short time while using a relatively low activity. The sources also enable delivery of a substantially uniform dose into the vessel wall, whether or not such delivery is through the wall of a stent.Type: GrantFiled: August 25, 2000Date of Patent: December 10, 2002Assignee: Endologix, IncInventors: Brett Trauthen, Lisa Tam, Robert Fazio, Michael Crocker, Edward F. Smith, Gary Strathern
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Patent number: 6458069Abstract: A sealed radiation source, which may be used to deliver a radioactive dose to a site in a body lumen. The source comprises a thin flexible substrate, and a layer of radioisotope attached thereto. The source may further comprise additional layers such as one or more tie layers disposed between the substrate and the radioisotope layer and one or more outer coating layers. In one embodiment, the source is wrapped around an inflatable balloon. Inflation of the balloon at a treatment site positions the source directly adjacent to the vessel wall, and allows irradiation of the site following or simultaneously with a balloon angioplasty, stent implantation, or stent sizing procedure.Type: GrantFiled: August 24, 1999Date of Patent: October 1, 2002Assignee: Endology, INC.Inventors: Lisa A. Tam, Brett A. Trauthen
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Publication number: 20020086432Abstract: The invention discloses a system, method and medical device for measuring various hemoglobin derivatives, such as oxyhemoglobin, reduced hemoglobin, partial hemoglobin, carboxyhemoglobin, methemoglobin and sulfhemoglobin in whole or in hemolyzed blood. The novel method uses a statistical approach to enable the design of a portable co-oximeter. This portable co-oximeter utilizes compact light sources, such as light emitting diodes or light emitting lasers, to emit light in the visible region. Being portable, the device is a point-of-care device that can be used in emergency situations by paramedics, in the emergency room, and in a physicians office to detect and measure the concentrations and/or percentages of functional and non-functional hemoglobin derivatives in a patient's blood.Type: ApplicationFiled: December 28, 2000Publication date: July 4, 2002Inventors: Lisa A. Tam, James Huntington Dabney, Michael H. Burnam, Martin J. Patko
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Publication number: 20020038658Abstract: Employing the known “tensegrity” principle, a female condom is configured such that when the condom is inserted into a woman's vagina, the woman's introitus acts on a proximal section of an elongated pouch extending between internal and external biasing members (e.g., rings) of the condom. Inward compressive forces exerted by the introitus on the inner ring of the condom cause the inner ring to be pushed distally within the vaginal canal, and the proximal pouch section to become a tension member pulling against the external ring. This causes a “tenting” of the proximal pouch section against the introitus. The resulting interaction of compression and tensile forces (a tensegrity effect) serves to provide the condom with a high degree of internal and external stability, including resistance to twisting and slippage.Type: ApplicationFiled: August 3, 2001Publication date: April 4, 2002Inventors: Glenn D. Austin, Lisa Tam
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Patent number: 6287249Abstract: Disclosed is a thin film radiation source, which may be used to deliver a radioactive dose to a site in a body lumen. The source comprises a thin flexible substrate, and a layer of radioisotope attached thereto. The source may further comprise additional layers such as one or more tie layers disposed between the substrate and the radioisotope layer and one or more outer coating layers. In one embodiment, the source is wrapped around an inflatable balloon. Inflation of the balloon at a treatment site positions the source directly adjacent to the vessel wall, and allows irradiation of the site following or simultaneously with a balloon angioplasty, stent implantation, or stent sizing procedure.Type: GrantFiled: February 19, 1999Date of Patent: September 11, 2001Assignee: Radiance Medical Systems, Inc.Inventors: Lisa A. Tam, Brett A. Trauthen
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Patent number: 6261320Abstract: Disclosed is a radioactive tubular prosthesis formed by rolling a flexible sheet around a longitudinal axis. Preferably, the prosthesis is self expandable under the radially outwardly directed spring bias of the rolled sheet. At least a portion of the sheet is provided with a coating comprising at least one radioisotope.Type: GrantFiled: February 19, 1999Date of Patent: July 17, 2001Assignee: Radiance Medical Systems, Inc.Inventors: Lisa A. Tam, Brett A. Trauthen
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Patent number: 5483080Abstract: A method and device for measuring the concentration of solids within a liquid medium, or other optical properties of a liquid solution or suspension, by the technology of reflectance. In a preferred embodiment, the reflectivity measuring device of the present invention comprises a measuring head or probe having at least one radiation source and at least one radiation sensor positioned therein. The head or probe is attached to a controller/data readout having a microprocessor control system housed therein. The head or probe is positioned within or adjacent a body of liquid. Thereafter, the radiation source is caused to emit radiation and the radiation sensor is utilized to sense the relative amounts of radiation reflected by the body of liquid and/or solids contained therein.Type: GrantFiled: July 26, 1994Date of Patent: January 9, 1996Inventor: Lisa A. Tam
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Patent number: 5242425Abstract: A plastic coupler for a catheter assembly including a distal member for attachment to a catheter tube and having a female luer lock connector for separable interconnection with a male connector of a proximal member having a self-sealing material disposed within a through passage for injection and a outer protective cap containing a sponge saturated with an antiseptic to bathe the self-sealing material and interconnection with an antiseptic, and a method for maintaining a coupler for a catheter assembly in aseptic condition.Type: GrantFiled: November 14, 1991Date of Patent: September 7, 1993Assignee: Gish Biomedical, Inc.Inventors: George W. White, Jack W. Brown, Lisa A. Tam