Patents by Inventor Chi-Nghia Ho
Chi-Nghia Ho 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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Publication number: 20240115115Abstract: An adaptable working-channel apparatus comprising: at an external working channel attached at its proximal end to a first mounting coupling; a handle-mounting sleeve for surrounding an endoscope shaft or handle, and having on its radially outer peripheral side at least one second mounting coupling for releasable mounting engagement with the first mounting coupling. The first mounting coupling comprises two spring-loaded clamping branches that are hinged together like a clothes pin and each form a clamping portion and an actuation portion. The second mounting coupling has a mounting rail extending in the longitudinal direction of the handle-mounting sleeve and has or forms at least one undercut that can be interlockingly clasped by the clamping branches of the first mounting coupling. Also provided is a distal tissue-clip application adapter that is connectable to the adaptable working-channel apparatus; and a surgical equipping system, having the working-channel apparatus and tissue-clip application adapter.Type: ApplicationFiled: January 20, 2022Publication date: April 11, 2024Applicant: Ovesco Endoscopy AGInventors: Michael Seibt, Antonio Caputo, Nico Hofmann, Chi-Nghia Ho
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Publication number: 20240091418Abstract: A process for manufacturing a viscoelastic injection agent having first and second poloxamers and at least one other component, the process including: a) mixing a first injection agent by mixing a the first poloxamer with the second poloxamer and a third amount of the at least one other component to obtain a predetermined amount of the injection agent; b) determining the viscosity of the injection agent obtained in step at different temperatures at a predetermined shear rate to obtain a present viscosity-over-temperature-curve; c) verifying if a maximum viscosity of the present viscosity-over-temperature-curve lays at a predetermined specific temperature range in a predetermined maximum viscosity range depending on the predetermined shear rate; and d) mixing a new injection agent, having amended at least the first amount of the first poloxamer and/or the second amount of the second poloxamer based on determined properties of the first injection agentType: ApplicationFiled: September 15, 2022Publication date: March 21, 2024Applicant: Ovesco Endoscopy AGInventors: Gabor Conrad, Chi-Nghia Ho, Marc O. Schurr
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Patent number: 11712153Abstract: A working channel device is mountable on the outer circumference of an endoscope, such as an endoscope of the flexible shaft design. The device has a tubular or hose-like working channel and a distal fixing element that can be fixed to the working channel. The distal fixing element can engage around the endoscope in a clamping manner at the endoscope head of the endoscope. A proximal fixing element can be fixed to the working channel, which can engage around the endoscope, preferably at the endoscope grip of the endoscope. A preferably sleeve-like adapter can be mounted at the proximal end of the working channel of the working channel device. The adapter has or forms the proximal fixing element and additionally forms a connection point/interface for the connection of medical devices.Type: GrantFiled: April 6, 2018Date of Patent: August 1, 2023Inventors: Chi-Nghia Ho, Alexander Meining
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Patent number: 11540697Abstract: A tissue clip application fitting set or retrofitting set includes a cap attachment for placement on the distal head of a medical endoscope, which has a placement section and a tissue clip holding section. The cap attachment is notched at least at two angular positions forming at least two notches/slots/grooves. A working channel leads into the hollow chamber and exits the hollow chamber radially in a region distal to the placement section and proximal to the radially supported tissue clip. A first guiding or leading element is arranged after the working channel belonging to the retrofitting set, as seen in the distal direction. A corresponding second guiding or leading element is arranged within the hollow chamber at an angular distance from the first guiding or leading element so as to be oriented in extension to a working channel belonging to the endoscope.Type: GrantFiled: June 12, 2018Date of Patent: January 3, 2023Inventors: Marc Schurr, Thomas Gottwald, Gunnar Anhöck, Franziska Baur, Sebastian Schostek, Chi-Nghia Ho
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Publication number: 20220240758Abstract: A treatment instrument which can be coupled to a distal end of an endoscope and has a hollow body and a gripping element. The gripping element can be operated via an actuation mechanism situated inside the hollow body. The gripping element is configured in the form of a cap with which a distal end of the hollow body can be closed. The invention also relates to an endoscope having a distal end which is coupled or can be coupled to a treatment instrument according to the invention.Type: ApplicationFiled: July 2, 2020Publication date: August 4, 2022Applicant: Ovesco Endoscopy AGInventors: Nico Hofmann, Gabor Conrad, Alexander Meining, Chi-Nghia Ho
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Patent number: 11246647Abstract: The present invention is directed to an endoscopic implant cutting and/or fragmenting apparatus of the bipolar type, operating on direct current, comprising an endoscope instrument having at least two opposing electrodes at its distal instrument head forming a cutting gap inbetween for receiving an electrically conductive implant or implant section to generate punctiform physical contact with the implant, and a DC-impulse generator connected to a control device adapted to generate a direct current in a pulsed way such that in a first phase of physical contact, the current pulse is adjusted to induce electric energy into the implant material being sufficient to melt the implant material exclusively in the area of the contact portion and in a second phase of physical noncontact, the current pulse is adjusted to generate an electric arc between at least one electrode and the melted implant material being sufficient to cut the melted implant material.Type: GrantFiled: May 10, 2017Date of Patent: February 15, 2022Inventors: Sebastian Schostek, Chi-Nghia Ho, Thomas Gottwald, Marc Schurr
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Patent number: 10987151Abstract: The disclosure relates to a spacer in the form of an attachment (15) to be mounted to an endoscope (1), said attachment being formed like a cap, enclosing a spatial volume (16) and being made of an insulating material. The attachment (15) is further equipped with a mounting device/adapter (6) designed to be coupled to a distal end of the endoscope (1). The attachment (15) comprises an area (11) designed to be in contact with a target tissue and further forms an aperture (12) enclosing a surface area (12a). Within the spatial volume, there is arranged an electrode (9) comprising a distal (9b) and a proximal (9a) end, the distal (9b) end of the electrode (9) having a predetermined minimum distance to the closest point of the surface area (12a).Type: GrantFiled: November 5, 2015Date of Patent: April 27, 2021Inventors: Chi-Nghia Ho, Gunnar Anhock, Gabor Conrad, Marc O. Schurr, Thomas Gottwald
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Publication number: 20210052141Abstract: A tissue clip application fitting set or retrofitting set includes a cap attachment for placement on the distal head of a medical endoscope, which has a placement section and a tissue clip holding section. The cap attachment is notched at least at two angular positions forming at least two notches/slots/grooves. A working channel leads into the hollow chamber and exits the hollow chamber radially in a region distal to the placement section and proximal to the radially supported tissue clip. A first guiding or leading element is arranged after the working channel belonging to the retrofitting set, as seen in the distal direction. A corresponding second guiding or leading element is arranged within the hollow chamber at an angular distance from the first guiding or leading element so as to be oriented in extension to a working channel belonging to the endoscope.Type: ApplicationFiled: June 12, 2018Publication date: February 25, 2021Inventors: MARC SCHURR, THOMAS GOTTWALD, GUNNAR ANHÖCK, FRANZISKA BAUR, SEBASTIAN SCHOSTEK, CHI-NGHIA HO
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Patent number: 10881454Abstract: A minimally invasive surgical implant-cutting instrument of the bipolar type, operated with direct current, with an instrument head which is located at the distal end of an instrument shank, wherein at least two mutually opposing instrument branches, preferably of the linear type, are arranged on the instrument head and between them define a cutting gap for receiving an electrically conductive implant or implant section between them. The electrodes are formed on the mutually facing longitudinal sides of the branches or these are each equipped with at least one electrode, which electrodes are in turn shaped at their mutually facing longitudinal sides to form a cutting edge in order to effect a quasi-linear or punctiform physical contact engagement with the electrically conductive implant or implant section for an electrical short circuit of the mutually opposing electrodes.Type: GrantFiled: March 11, 2014Date of Patent: January 5, 2021Inventors: Sebastian Schostek, Chi-Nghia Ho, Michael Melbert, Marc O. Schurr, Thomas Gottwald
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Publication number: 20200046201Abstract: A working channel device is mountable on the outer circumference of an endoscope, such as an endoscope of the flexible shaft design. The device has a tubular or hose-like working channel and a distal fixing element that can be fixed to the working channel. The distal fixing element can engage around the endoscope in a clamping manner at the endoscope head of the endoscope. A proximal fixing element can be fixed to the working channel, which can engage around the endoscope, preferably at the endoscope grip of the endoscope. A preferably sleeve-like adapter can be mounted at the proximal end of the working channel of the working channel device. The adapter has or forms the proximal fixing element and additionally forms a connection point/interface for the connection of medical devices.Type: ApplicationFiled: April 6, 2018Publication date: February 13, 2020Inventors: Chi-Nghia HO, Alexander MEINING
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Publication number: 20180000538Abstract: The present invention is directed to an endoscopic implant cutting and/or fragmenting apparatus of the bipolar type, operating on direct current, comprising an endoscope instrument having at least two opposing electrodes at its distal instrument head forming a cutting gap inbetween for receiving an electrically conductive implant or implant section to generate punctiform physical contact with the implant, and a DC-impulse generator having or connected to a control device adapted to generate a direct current in a pulsed way being controlled by the control device such that in a first phase of physical contact, the current pulse is adjusted preferably by controlling the current value at the electrodes to induce electric energy into the implant material being sufficient to melt the implant material exclusively in the area of the contact portion and in a second phase of physical noncontact, the current pulse is adjusted preferably by controlling the voltage value at the electrodes to generate an electric arc betweType: ApplicationFiled: May 10, 2017Publication date: January 4, 2018Inventors: Sebastian Schostek, Chi-Nghia Ho, Thomas Gottwald, Marc Schurr
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Patent number: 9603614Abstract: The present invention relates to an endoscope cap with a holding and withdrawal device for a tissue clip (4) that can be placed onto a spreading sleeve (3) of the endoscope cap (1). The endoscope cap comprises an end groove (7) that opens at the front edge of the spreading sleeve (3) and that slits open the cap wall on both sides, and a withdrawal thread or web (11) that radially traverses the end groove (7) in a forward axial cap section and that is introduced or can be introduced slideably into an endoscope channel for actuation thereof at a radial inside of the endoscope cap (1).Type: GrantFiled: June 10, 2009Date of Patent: March 28, 2017Assignee: OVESCO ENDOSCOPY AGInventors: Marc O. Schurr, Chi-Nghia Ho, Andreas Kirschniak, Gunnar Anhoeck
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Patent number: 9522040Abstract: What is disclosed is an endoscopic surgical instrument with a hose-shaped outside jacket, in which a likewise hose-shaped inside jacket is supported relatively displaceable, on whose distal end section a sleeve or shaft-shaped instrument head is formed or mounted. In the instrument head is fixed a needle-shaped RF electrode electrically-insulated, whose electrical supply line is routed through the inside jacket, and which projects freely beyond the distal end of the instrument head in the axial direction. In the instrument head is formed a flush channel, extending at least axially, opening at both instrument head ends.Type: GrantFiled: March 18, 2013Date of Patent: December 20, 2016Assignee: OVESCO ENDOSCOPY AGInventors: Gunnar Anhoeck, Sebastian Menge, Chi-Nghia Ho, Marc O. Schurr
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Publication number: 20160128755Abstract: The disclosure relates to a spacer in the form of an attachment (15) to be mounted to an endoscope (1), said attachment being formed like a cap, enclosing a spatial volume (16) and being made of an insulating material. The attachment (15) is further equipped with a mounting device/adapter (6) designed to be coupled to a distal end of the endoscope (1). The attachment (15) comprises an area (11) designed to be in contact with a target tissue and further forms an aperture (12) enclosing a surface area (12a). Within the spatial volume, there is arranged an electrode (9) comprising a distal (9b) and a proximal (9a) end, the distal (9b) end of the electrode (9) having a predetermined minimum distance to the closest point of the surface area (12a).Type: ApplicationFiled: November 5, 2015Publication date: May 12, 2016Inventors: Chi-Nghia Ho, Gunnar Anhock, Gabor Conrad, Marc O. Schurr, Thomas Gottwald
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Patent number: 9295470Abstract: A resection device comprising a cup-shaped cap for a shaft-type inserting means is disclosed which is fixed at the distal end of the shaft-type inserting means or is formed at the same and includes an expanding sleeve portion to which a spring-biased tissue clip is attached which can be withdrawn by means of a releasing or withdrawing device over the distal front edge of the cap. In accordance with the invention, inside the expanding sleeve portion a cutting device is arranged which is held at the inner wall of the expanding sleeve portion at a predetermined axial distance from the distal front edge of the cap.Type: GrantFiled: October 27, 2010Date of Patent: March 29, 2016Assignee: Ovesco Endoscopy AGInventors: Franziska Baur, Chi-Nghia Ho, Marc O. Schurr, Gunnar Anhoeck, Thomas Gottwald
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Publication number: 20160022356Abstract: A surgical implant-cutting instrument of the bipolar type, operated with direct current, is disclosed, with an instrument head which is located at the distal end of an instrument shank and which is provided for minimally invasive insertion of the instrument into a patient's body, wherein at least two mutually opposing instrument branches, preferably of the linear type, are arranged on the instrument head and between them define a cutting gap for receiving an electrically conductive implant or implant section between them. According to the invention electrodes are formed on the mutually facing longitudinal sides of the branches or these are each equipped with at least one electrode, which electrodes are in turn shaped at their mutually facing longitudinal sides to form a cutting edge in order to effect a quasi linear or punctiform physical contact engagement with the electrically conductive implant or implant section for an electrical short circuit of the mutually opposing electrodes.Type: ApplicationFiled: March 11, 2014Publication date: January 28, 2016Inventors: Sebastian SCHOSTEK, Chi-Nghia HO, Michael MELBERT, Marc O. SCHURR, Thomas GOTTWALD
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Patent number: 8784436Abstract: A proctological instrument is disclosed comprising an instrument handle to which at its proximal end a bending-resistant tubular shaft is mounted at the distal end of which a cap is fixed or formed to which a tissue clip adapted to be withdrawn from the cap by means of a releasing or withdrawing device is attached in a preferably spring-elastic manner. In accordance with the invention, the tubular shaft is offset at its distal end portion in an area directly ahead of the cap and/or the cap itself is offset at a predetermined fixed angle so that the withdrawing direction for the clip defined by the cap is aligned at the angle with respect to the tubular shaft axis.Type: GrantFiled: October 28, 2010Date of Patent: July 22, 2014Assignee: Ovesco Endoscopy AGInventors: Chi-Nghia Ho, Gunnar Anhoeck, Franziska Baur, Marc O. Schurr, Ruediger Prosst, Thomas Gottwald
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Patent number: 8721528Abstract: The present application relates to a medical gripping device (1) with a flexible shaft (2) with a front end (13) and a rear end (14) and a web (5) comprising at least one web element, wherein the web (4) is attached to the front end (3) of the shaft (2). The medical gripping device additionally has at least two branches (5, 6) which are hinged on the web (4), and at least two at least partly flexible control mechanisms (7, 151, 155, 8, 152, 156) which are at least partly arranged in the shaft (2), wherein each individual branch (5, 6) can be moved individually with respect to the web (4) by means of its individual control mechanism (7, 151, 155, 8, 152, 156). Furthermore, the medical gripping device has a grip (150) at the rear end (14) of the flexible shaft (2), by mans of which grip the medical gripping device (1) can be held and actuated.Type: GrantFiled: June 10, 2009Date of Patent: May 13, 2014Assignee: Ovesco Endoscopy AGInventors: Chi-Nghia Ho, Gunnar Anhoeck, Marc O. Schurr
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Patent number: D860445Type: GrantFiled: October 5, 2017Date of Patent: September 17, 2019Assignee: Ovesco Endoscopy AGInventors: Chi-Nghia Ho, Alexander Meining
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Patent number: D956975Type: GrantFiled: August 13, 2019Date of Patent: July 5, 2022Assignee: OVESCO ENDOSCOPY AGInventors: Chi-Nghia Ho, Alexander Meining