Patents by Inventor Paul K. Hsei
Paul K. Hsei 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: 8133247Abstract: A multi-part tool assembly for harvesting and implanting follicular units, comprising an outer cannula having an open, tissue-piercing distal end, and an inner cannula coaxially positioned in a lumen of the first cannula, the second cannula having an open, tissue-coring distal end sized to engage and retain single hair follicular units. An obturator may be positioned in the lumen of the second cannula, wherein at least one of the first cannula, second cannula, and obturator are movable relative to the other ones.Type: GrantFiled: October 12, 2009Date of Patent: March 13, 2012Assignee: Restoration Robotics, Inc.Inventors: Mohan Bodduluri, Paul K. Hsei
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Publication number: 20100030234Abstract: A multi-part tool assembly for harvesting and implanting follicular units, comprising an outer cannula having an open, tissue-piercing distal end, and an inner cannula coaxially positioned in a lumen of the first cannula, the second cannula having an open, tissue-coring distal end sized to engage and retain single hair follicular units. An obturator may be positioned in the lumen of the second cannula, wherein at least one of the first cannula, second cannula, and obturator are movable relative to the other ones.Type: ApplicationFiled: October 12, 2009Publication date: February 4, 2010Inventors: Mohan Bodduluri, Paul K. Hsei
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Patent number: 7621933Abstract: A multi-part tool assembly for harvesting and implanting follicular units, comprising an outer cannula having an open, tissue-piercing distal end, and an inner cannula coaxially positioned in a lumen of the first cannula, the second cannula having an open, tissue-coring distal end sized to engage and retain single hair follicular units. An obturator may be positioned in the lumen of the second cannula, wherein at least one of the first cannula, second cannula, and obturator are movable relative to the other ones.Type: GrantFiled: May 31, 2006Date of Patent: November 24, 2009Assignee: Restoration Robotics, Inc.Inventors: Mohan Bodduluri, Paul K. Hsei
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Patent number: 7621934Abstract: A method of transplanting a hair follicular units includes aligning a longitudinal axis of a harvesting cannula of a tool assembly with a longitudinal axis of a selected follicular unit, advancing the harvesting cannula relative to the body surface so that a tissue coring distal end of the harvesting cannula penetrates the body surface surrounding the selected follicular unit to a depth sufficient to substantially encapsulate the follicular unit, withdrawing the harvesting cannula distal end from the body surface with the follicular unit retained in an interior lumen of the harvesting cannula, advancing an implanting cannula of the tool assembly over the harvesting cannula relative to the body surface so that a tissue piercing distal end of the implanting cannula punctures the body surface and forms an implantation cavity therein, and displacing the follicular unit from the harvesting cannula lumen into the implantation cavity.Type: GrantFiled: May 31, 2006Date of Patent: November 24, 2009Assignee: Restoration Robotics, IncInventors: Mohan Bodduluri, Paul K. Hsei
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Patent number: 7311673Abstract: A biopsy device comprises a biopsy instrument, suitable for collecting at least one tissue sample from a body lumen, such as a mammary duct, and a cutter introducer sized for receiving the biopsy instrument and introducing the biopsy instrument into a mammary duct to retrieve a tissue sample therefrom.Type: GrantFiled: April 24, 2003Date of Patent: December 25, 2007Assignee: Acueity, Inc.Inventors: Richard L. Mueller, Jr., Paul K. Hsei
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Patent number: 7192430Abstract: Apparatuses and methods for removing solid tissue from beneath a tissue surface are described. The methods rely on positioning an energy conductive element at a target site beneath the tissue surface and energizing the element so that it can vaporize tissue. The element is then moved in a pattern which provides the desired tissue removal geometry, such as spherical, ovoid, or cylindrical. Usually, the shaft is moved, typically rotated or reciprocated, and the energy conductive element is moved relative to the shaft, typically by pivoting a rigid element or bowing a flexible element.Type: GrantFiled: August 5, 2003Date of Patent: March 20, 2007Assignee: Cytyc CorporationInventors: Csaba Truckai, Russel M. Sampson, Paul K. Hsei
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Publication number: 20040215103Abstract: A biopsy device comprises a biopsy instrument, suitable for collecting at least one tissue sample from a body lumen, such as a mammary duct, and a cutter introducer sized for receiving the biopsy instrument and introducing the biopsy instrument into a mammary duct to retrieve a tissue sample therefrom.Type: ApplicationFiled: April 24, 2003Publication date: October 28, 2004Inventors: Richard L. Mueller, Paul K. Hsei
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Publication number: 20040054368Abstract: Apparatuses and methods for removing solid tissue from beneath a tissue surface are described. The methods rely on positioning an energy conductive element at a target site beneath the tissue surface and energizing the element so that it can vaporize tissue. The element is then moved in a pattern which provides the desired tissue removal geometry, such as spherical, ovoid, or cylindrical. Usually, the shaft is moved, typically rotated or reciprocated, and the energy conductive element is moved relative to the shaft, typically by pivoting a rigid element or bowing a flexible element.Type: ApplicationFiled: August 5, 2003Publication date: March 18, 2004Applicant: NOVACEPTInventors: Csaba Truckai, Russel M. Sampson, Paul K. Hsei
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Patent number: 6663626Abstract: Apparatuses and methods for removing solid tissue from beneath a tissue surface are described. The methods rely on positioning an energy conductive element at a target site beneath the tissue surface and energizing the element so that it can vaporize tissue. The element is then moved in a pattern which provides the desired tissue removal geometry, such as spherical, ovoid, or cylindrical. Usually, the shaft is moved, typically rotated or reciprocated, and the energy conductive element is moved relative to the shaft, typically by pivoting a rigid element or bowing a flexible element.Type: GrantFiled: August 14, 2001Date of Patent: December 16, 2003Assignee: NovaceptInventors: Csaba Truckai, Russel M. Sampson, Paul K. Hsei
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Publication number: 20020072745Abstract: Apparatuses and methods for removing solid tissue from beneath a tissue surface are described. The methods rely on positioning an energy conductive element at a target site beneath the tissue surface and energizing the element so that it can vaporize tissue. The element is then moved in a pattern which provides the desired tissue removal geometry, such as spherical, ovoid, or cylindrical. Usually, the shaft is moved, typically rotated or reciprocated, and the energy conductive element is moved relative to the shaft, typically by pivoting a rigid element or bowing a flexible element.Type: ApplicationFiled: August 14, 2001Publication date: June 13, 2002Applicant: NOVACEPTInventors: Csaba Truckai, Russel M. Sampson, Paul K. Hsei
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Patent number: 6296639Abstract: Apparatuses and methods for removing solid tissue from beneath a tissue surface are described. The methods rely on positioning an energy conductive element at a target site beneath the tissue surface and energizing the element so that it can vaporize tissue. The element is then moved in a pattern which provides the desired tissue removal geometry, such as spherical, ovoid, or cylindrical. Usually, the shaft is moved, typically rotated or reciprocated, and the energy conductive element is moved relative to the shaft, typically by pivoting a rigid element or bowing a flexible element.Type: GrantFiled: February 12, 1999Date of Patent: October 2, 2001Assignee: NovaceptInventors: Csaba Truckai, Russel M. Sampson, Paul K. Hsei
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Patent number: 6159160Abstract: Improved systems and methods are used for controlled infusion of fluid into a body cavity. In particular, the improved system allows a user to accurately control pressure created in a body cavity over a broad range of fluid flow rates required in various medical procedures. In one embodiment, the system comprises a pump having a conduit which defines a fluid flow path from the pump. Typically, a surgical instrument such as a resectoscope is coupled to the conduit to direct the fluid into the body cavity. The system controls pressure in the body cavity by using a first sensor to measure pump output and a second sensor to measure body cavity pressure. Preferably, the second sensor measures the actual pressure in the body cavity to correct for any pressure losses that may occur during fluid delivery from the pump.Type: GrantFiled: September 3, 1998Date of Patent: December 12, 2000Assignee: Ethicon, Inc.Inventors: Paul K. Hsei, Christopher R. Clare, Donald L. Alden
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Patent number: 6092430Abstract: A controller for use in a system employing selective permeable membrane technology to maintain a controlled atmosphere within a refrigerated container. The controller is electrically interfaced to an oxygen and carbon dioxide sensing device which is disposed within the container and capable of withstanding severe enviromental conditions to measure the levels of oxygen and carbon dioxide within the container. The controller maintains present levels of oxygen and carbon dioxide within the container and is adapted to calibrate the carbon dioxide and oxygen sensing devices as well as check for proper operation of the sensing devices and default to safety conditions when a failure is detected. The controller is further adapted to control the atmosphere maintenance system in a manner adapted not to increase the peak power requirements of the system.Type: GrantFiled: May 10, 1999Date of Patent: July 25, 2000Assignee: Prolong Systems, Inc.Inventors: Max D. Liston, Todd I. Harrison, Paul K. Hsei
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Patent number: 5826977Abstract: A method of mixing substances under either laminar flow or turbulent flow conditions, or substances having a combination of laminar flow conditions. The method includes combining two or more initial fluidic substances into a combined fluid stream, dividing the combined fluid stream into two or more separate fluid streams, changing the shape of each of the two or more separate fluid streams in preparation for layering the two or more separate fluid streams together into a subsequent combined fluid stream such that each subsequent combined fluid stream has the same cross-sectional shape as the initial combined fluid stream and such that the cross-sectional area of the fluid stream is constant, and repeating the dividing, shaping and layering of the subsequent combined fluid stream at least one or more times.Type: GrantFiled: April 21, 1998Date of Patent: October 27, 1998Assignee: Nova Biomedical CorporationInventors: James E. Fowler, Paul K. Hsei
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Patent number: 5826981Abstract: A static mixer for mixing substances under either laminar flow or turbulent flow conditions, or for mixing substances having a combination of laminar and turbulent flow conditions. The static mixer includes a first conduit operatively connected to a series of two or more mixing segments. The mixing segments include one or more splitting components for dividing the fluid stream into two or more flow streams, two or more flow branches wherein each of the flow branches receives one of the flow streams and wherein each of the flow branches operatively changes the cross-sectional shapes of their respective flow streams in preparation for layering and stacking the flow streams to each other, and a second conduit for receiving and stacking the two or more flow streams creating a layered unified fluid stream.Type: GrantFiled: August 26, 1996Date of Patent: October 27, 1998Assignee: Nova Biomedical CorporationInventors: James E. Fowler, Paul K. Hsei
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Patent number: 5801317Abstract: A controller for use in a system employing selective permeable membrane technology to maintain a controlled atmosphere within a refrigerated container. The controller is electrically interfaced to an oxygen and carbon dioxide sensing device which is disposed within the container and capable of withstanding severe environmental conditions to measure the levels of oxygen and carbon dioxide within the container. The controller maintains preset levels of oxygen and carbon dioxide within the container and is adapted to calibrate the carbon dioxide and oxygen sensing devices as well as check for proper operation of the sensing devices and default to safety conditions when a failure is detected. The controller is further adapted to control the atmosphere maintenance system in a manner adapted not to increase the peak power requirements of the system.Type: GrantFiled: April 28, 1997Date of Patent: September 1, 1998Inventors: Max D. Liston, Todd I. Harrison, Paul K. Hsei
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Patent number: 5623105Abstract: A controller for use in a system employing selective permeable membrane technology to maintain a controlled atmosphere within a refrigerated container. The controller is electrically interfaced to an oxygen and carbon dioxide sensing device which is disposed within the container and capable of withstanding severe environmental conditions to measure the levels of oxygen and carbon dioxide within the container. The controller maintains preset levels of oxygen and carbon dioxide within the container and is adapted to calibrate the carbon dioxide and oxygen sensing devices as well as check for proper operation of the sensing devices and default to safety conditions when a failure is detected. The controller is further adapted to control the atmosphere maintenance system in a manner adapted not to increase the peak power requirements of the system.Type: GrantFiled: January 19, 1995Date of Patent: April 22, 1997Assignee: Prolong Systems, Inc.Inventors: Max D. Liston, Todd I. Harrison, Paul K. Hsei
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Patent number: 5357113Abstract: A pneumatic detector, non-dispersive infrared analyzer employing detector cell chambers in optical series. The invention having an auxiliary chamber communicating with the front chamber to increase the rear chamber's signal so as to balance the signals from the front and rear chambers. The use of xenon as a diluent gas in the detector chambers in combination with a mass flow detector to improve the sensitivity. The use of an improved synchronous detection method employing a voltage-to-frequency circuit to convert the detector signal to a synchronous high resolution digital signal. The use of an improved source electrically pulsed having low thermal mass and a large radiating area.Type: GrantFiled: November 18, 1992Date of Patent: October 18, 1994Assignee: Liston Scientific Corp.Inventors: Max D. Liston, Todd I. Harrison, Paul K. Hsei, Wayne F. Blackburn
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Patent number: 5277873Abstract: A sample preparation device for precisely measuring a sample volume, mixing the sample with a reagent and then separating out any resulting precipitant from the sample. In using the device, the sample is nonquantitatively dispensed by the user and is volumetrically delivered by the device using a positive displacement method. No vortexing or shaking is required and the sample and reagent are precisely and reproducibly mixed automatically.Type: GrantFiled: April 5, 1993Date of Patent: January 11, 1994Inventor: Paul K. Hsei
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Patent number: 4946651Abstract: A modular multi-channel automated medical analyzer device is disclosed, characterized by use of an ion selective electrode and/or enzymatic electrode/wash cell system which permits rapid analysis of various substances of interest contained within undiluted body fluids such as whole blood, serum and/or plasma. The ion selective electrode and/or the enzymatic electrode are disposed upon a probe which automatically axially reciprocates downwardly in a simple manipulative motion between an open-ended reference wash cell and a sample cup bearing the body fluid specimen to be analyzed. The wash cell includes an inlet port and one or more outlet ports through which is circulated an aqueous solution bearing a known concentration of the substance to be measured to provide a reference calibration medium as well as a probe washing medium.Type: GrantFiled: May 17, 1988Date of Patent: August 7, 1990Assignee: SmithKline Diagnostics, Inc.Inventors: Max D. Liston, Paul K. Hsei, David G. Dickinson, George M. Daffern, James G. Fetty