Patents by Inventor Katsuhiro Hiejima
Katsuhiro Hiejima 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).
-
Publication number: 20230346219Abstract: An electrocardiographic transmitter executes statistical processes for an electrocardiographic signal to calculate an average value HRav of a heart rate HR in a predetermined period of time. In a case where the average value HRav of the heart rate HR is abnormal, the electrocardiographic transmitter continuously transmits electrocardiogram data based on the electrocardiographic signal to a terminal. The terminal receives and transfers the electrocardiogram data as it is to a host device. The host device stores therein and supplies the transferred electrocardiogram data for a diagnosis by a medical worker. Thus, the state of a subject's heart can be monitored over the long term.Type: ApplicationFiled: July 12, 2023Publication date: November 2, 2023Inventors: Atsunori Nakano, Yoshiharu Kinoshita, Katsuhiro Hiejima, Tomoyuki Uchida, Masahide Harada
-
Patent number: 11697004Abstract: To provide a new balloon catheter enabling formation of, with high dimensional accuracy and excellent shape adaptability with respect to a balloon, an additional structure such as a blade and a reinforcement member to be additionally provided to the balloon. In this balloon catheter 10 provided with an expandable/contractible balloon 14 on the distal end side of a catheter 12, an additional structure 36 having a prescribed pattern is formed through electroforming or the like directly onto an inner circumferential surface 34 and/or an outer circumferential surface 82 of the balloon 14.Type: GrantFiled: February 18, 2020Date of Patent: July 11, 2023Assignee: NIPRO CORPORATIONInventors: Yoshihiko Sano, Yasushi Ooyama, Katsuhiro Hiejima
-
Publication number: 20210228077Abstract: An electrocardiographic transmitter executes statistical processes for an electrocardiographic signal to calculate an average value HRav of a heart rate HR in a predetermined period of time. In a case where the average value HRav of the heart rate HR is abnormal, the electrocardiographic transmitter continuously transmits electrocardiogram data based on the electrocardiographic signal to a terminal. The terminal receives and transfers the electrocardiogram data as it is to a host device. The host device stores therein and supplies the transferred electrocardiogram data for a diagnosis by medical worker. Thus, the state of a subject's heart can be monitored over the long term.Type: ApplicationFiled: June 18, 2019Publication date: July 29, 2021Inventors: Atsunori Nakano, Yoshiharu Kinoshita, Katsuhiro Hiejima, Tomoyuki Uchida, Masahide Harada
-
Patent number: 10987493Abstract: Provided is a guide wire having a novel structure, with which it is possible to improve production efficiency and to effectively prevent large irregularities from forming on an outer circumferential surface of a core wire. Further provided is a guide wire having a novel structure, with which it is possible to more meticulously set bending rigidity to a distal end portion thereof. In a guide wire having a coil externally mounted about a distal end portion of a core wire, a proximal end portion of the coil is integrally joined to the core wire during formation of the coil. Furthermore, in a guide wire having a coil externally mounted about a distal end portion of a core wire, a cross-sectional shape of a wire that constitutes the coil varies in a lengthwise direction of the coil.Type: GrantFiled: February 19, 2016Date of Patent: April 27, 2021Assignee: NIPRO CORPORATIONInventors: Yoshihiko Sano, Katsuhiro Hiejima
-
Publication number: 20200179662Abstract: To provide a new balloon catheter enabling formation of, with high dimensional accuracy and excellent shape adaptability with respect to a balloon, an additional structure such as a blade and a reinforcement member to be additionally provided to the balloon. In this balloon catheter 10 provided with an expandable/contractible balloon 14 on the distal end side of a catheter 12, an additional structure 36 having a prescribed pattern is formed through electroforming or the like directly onto an inner circumferential surface 34 and/or an outer circumferential surface 82 of the balloon 14.Type: ApplicationFiled: February 18, 2020Publication date: June 11, 2020Inventors: Yoshihiko SANO, Yasushi OOYAMA, Katsuhiro HIEJIMA
-
Publication number: 20190091046Abstract: A stent (32) configured to be placed in a body lumen and having a tubular shape formed by a structure that is expandable and contractible skeleton (18, 19) in a radial direction, the skeleton (18, 19) having a heteromorphic structure due to changes of a cross section shape thereof in a thickness direction. A stent (10) that is expandable and contractible in the radial direction while being configured to be placed in a body lumen, the stent (10) having a heteromorphic tubular shape, a cross section shape of which changes in a lengthwise direction, and having a metal skeleton (18, 19) formed by at least one of electroforming and etching.Type: ApplicationFiled: November 26, 2018Publication date: March 28, 2019Inventors: Yoshihiko SANO, Yasushi OOYAMA, Katsuhiro HIEJIMA, Kouji AKIMOTO
-
Patent number: 10137014Abstract: A stent (32) configured to be placed in a body lumen and having a tubular shape formed by a structure that is expandable and contractible skeleton (18, 19) in a radial direction, the skeleton (18, 19) having a heteromorphic structure due to changes of a cross section shape thereof in a thickness direction. A stent (10) that is expandable and contractible in the radial direction while being configured to be placed in a body lumen, the stent (10) having a heteromorphic tubular shape, a cross section shape of which changes in a lengthwise direction, and having a metal skeleton (18, 19) formed by at least one of electroforming and etching.Type: GrantFiled: December 16, 2014Date of Patent: November 27, 2018Assignee: NIPRO CorporationInventors: Yoshihiko Sano, Yasushi Ooyama, Katsuhiro Hiejima, Kouji Akimoto
-
Publication number: 20180043141Abstract: Provided is a new balloon catheter enabling formation of, with high dimensional accuracy and excellent shape adaptability with respect to a balloon, an additional structure such as a blade and/or a reinforcement member on the balloon. The balloon catheter includes a shaft and an expandable/contractible balloon on the distal end side of the shaft, with an additional structure having a prescribed pattern being formed through electroforming or the like directly onto an inner circumferential surface and/or an outer circumferential surface of the balloon.Type: ApplicationFiled: May 12, 2016Publication date: February 15, 2018Applicant: NIPRO CORPORATIONInventors: Yoshihiko SANO, Yasushi OOYAMA, Katsuhiro HIEJIMA
-
Publication number: 20180015260Abstract: Provided is a guide wire having a novel structure, with which it is possible to improve production efficiency and to effectively prevent large irregularities from forming on an outer circumferential surface of a core wire. Further provided is a guide wire having a novel structure, with which it is possible to more meticulously set bending rigidity to a distal end portion thereof. In a guide wire having a coil externally mounted about a distal end portion of a core wire, a proximal end portion of the coil is integrally joined to the core wire during formation of the coil. Furthermore, in a guide wire having a coil externally mounted about a distal end portion of a core wire, a cross-sectional shape of a wire that constitutes the coil varies in a lengthwise direction of the coil.Type: ApplicationFiled: February 19, 2016Publication date: January 18, 2018Inventors: Yoshihiko SANO, Katsuhiro HIEJIMA
-
Publication number: 20160317331Abstract: A stent (32) configured to be placed in a body lumen and having a tubular shape formed by a structure that is expandable and contractible skeleton (18, 19) in a radial direction, the skeleton (18, 19) having a heteromorphic structure due to changes of a cross section shape thereof in a thickness direction. A stent (10) that is expandable and contractible in the radial direction while being configured to be placed in a body lumen, the stent (10) having a heteromorphic tubular shape, a cross section shape of which changes in a lengthwise direction, and having a metal skeleton (18, 19) formed by at least one of electroforming and etching.Type: ApplicationFiled: December 16, 2014Publication date: November 3, 2016Inventors: Yoshihiko SANO, Yasushi OOYAMA, Katsuhiro HIEJIMA, Kouji AKIMOTO
-
Patent number: 8992483Abstract: An indwelling needle assembly and protector. The indwelling needle assembly has an inner needle, an inner needle hub, an outer needle, an outer needle hub, and a protector for protecting the needle point of the inner needle arranged on the outer periphery of the inner needle so as to be slidable in the axial direction. The protector includes a protecting member in which the needle point of the inner needle is stored and a closing member arranged on the outer periphery of the protecting member so as to be capable of sliding, a displaceable side wall which is capable of being displaced inward so as to close a distal opening of the protecting member, the displaceable side wall being displaced inwardly by the closing member arranged on the outer periphery of the distal end portion of the protecting member.Type: GrantFiled: March 26, 2008Date of Patent: March 31, 2015Assignee: Nipro CorporationInventors: Kohzo Ishikura, Katsuhiro Hiejima, Katsunori Kawai
-
Patent number: 8845591Abstract: A liquid medicine self-administration device including a flexible reservoir, an operating member, a pushing member to move with respect to the operating member and to induce pressure deformation of the reservoir, and engaging means engages the operating member. With the operating member engaged by the engaging means, the pushing member is relatively moved to the operating member based on restoring force of a spring member to push the reservoir by the pushing member. By disengaging means moving in unison with the pushing member, the engaging means is released from an engaged state with respect to the operating member, when the pushing member has moved to a predetermined location while pushing the reservoir.Type: GrantFiled: March 15, 2010Date of Patent: September 30, 2014Assignee: Nipro CorporationInventors: Akihiko Ishizaki, Katsuhiro Hiejima, Tomohiro Uchimura
-
Patent number: 8641012Abstract: A medical connector of improved configuration. Annular grooves are formed in both inner and outer surfaces of an outer peripheral portion of an elastic valve element to form an annular constricted section. An outer peripheral side from the constricted section is made to serve as an annular fixation section. A valve receiving seat is formed at an inner peripheral edge of an aperture portion in a housing, and an annular ring is fixed to the aperture portion to sandwich and support the annular fixation section between the valve receiving seat and the annular ring. Engaging projections formed on mutually facing surfaces of the valve receiving seat and the annular ring are engaged with the annular grooves, and either the engaging projection and/or the engaging projection is divided in a circumferential direction to have a plurality of projection-divisions.Type: GrantFiled: December 24, 2009Date of Patent: February 4, 2014Assignee: Nipro CorporationInventors: Kuniaki Matsumoto, Katsuhiro Hiejima, Ken Suzuki, Akihiko Ishizaki
-
Patent number: 8052641Abstract: There is provided a winged indwelling needle for reducing the possibility of damaging a blood vessel or the like by a cannula, including a movable unit 1 having the cannula and a hub, a tube 2 connected to the rear portion of the hub, a holder 3, and a fixing wing 4, in which the movable unit 1 is provided on the holder 3 so as to be capable of sliding in the axial direction, is capable of changing in position between a position in use and a stored position which is behind the position in use, and the movable unit 1 is fixed to the position in use so as to be releasable. The holder 3 includes a protecting cylinder 26 which stores only the front portion including a blade point 6A of the cannula 6 in the interior thereof when the movable unit is positioned at the stored position and is provided with the fixing wing 4, and a guide member 27 exposed upward for guiding the sliding movement of the movable unit 1.Type: GrantFiled: June 7, 2007Date of Patent: November 8, 2011Assignee: NIPRO CorporationInventors: Katsuhiro Hiejima, Yukinori Ebara
-
Publication number: 20110233435Abstract: A medical connector of improved configuration. Annular grooves are formed in both inner and outer surfaces of an outer peripheral portion of an elastic valve element to form an annular constricted section. An outer peripheral side from the constricted section is made to serve as an annular fixation section. A valve receiving seat is formed at an inner peripheral edge of an aperture portion in a housing, and an annular ring is fixed to the aperture portion to sandwich and support the annular fixation section between the valve receiving seat and the annular ring. Engaging projections formed on mutually facing surfaces of the valve receiving seat and the annular ring are engaged with the annular grooves, and either the engaging projection and/or the engaging projection is divided in a circumferential direction to have a plurality of projection-divisions.Type: ApplicationFiled: December 24, 2009Publication date: September 29, 2011Applicant: NIPRO CORPORATIONInventors: Kuniaki Matsumoto, Katsuhiro Hiejima, Ken Suzuki, Akihiko Ishizaki
-
Patent number: 7914494Abstract: An indwelling catheter comprises a tube, a female connector and an elastically deformable hemostasis valve which can be pressed by a male connector. An opening taper portion tapered forwardly is formed in a longitudinal intermediate portion of an inner circumferential surface of the female connector. The elastically deformable hemostasis valve is provided longitudinally slidably in the opening taper portion of the female connector and an inside portion extending rearwardly from the opening taper portion. The hemostasis valve includes; a body having a hollow form opened at its front and rear ends or a tubular portion fitted over the connecting portion from a rearward direction; and an openable/closable portion being opened by elastic deformation of the body or the tubular portion.Type: GrantFiled: September 27, 2007Date of Patent: March 29, 2011Assignee: Nipro CorporationInventor: Katsuhiro Hiejima
-
Patent number: 7846127Abstract: A multi lumen catheter including an inner tube having a front tip, an outer tube, a tube or lumen for inserting a guide wire, a blood extraction lumen and a blood return lumen which are formed in the outer tube and inner tube, respectively, or both in the outer tube, wherein the inner tube is inserted in the outer tube, and allowed to slide relative thereto, and the front tip is jointed to the front end of the outer tube to shut off communication of the lumens with the exterior. A multi-lumen catheter with balloon includes a balloon provided on a tabular body at a front end thereof, a blood return port and a blood extraction port provided in the tubular body on opposite sides of the balloon, and an outer cylinder slidable on the tubular body to close the blood extraction and blood return ports and the balloon.Type: GrantFiled: September 20, 2007Date of Patent: December 7, 2010Assignee: Nipro CorporationInventors: Junichi Igarashi, Katsuhiro Hiejima
-
Publication number: 20100249718Abstract: A liquid medicine self-administration device including a flexible reservoir, an operating member, a pushing member to move with respect to the operating member and to induce pressure deformation of the reservoir, and engaging means engages the operating member. With the operating member engaged by the engaging means, the pushing member is relatively moved to the operating member based on restoring force of a spring member to push the reservoir by the pushing member. By disengaging means moving in unison with the pushing member, the engaging means is released from an engaged state with respect to the operating member, when the pushing member has moved to a predetermined location while pushing the reservoir.Type: ApplicationFiled: March 15, 2010Publication date: September 30, 2010Applicant: NIPRO CORPORATIONInventors: Akihiko Ishizaki, Katsuhiro Hiejima, Tomohiro Uchimura
-
Publication number: 20100234804Abstract: There is provided a winged indwelling needle for reducing the possibility of damaging a blood vessel or the like by a cannula, including a movable unit 1 having the cannula and a hub, a tube 2 connected to the rear portion of the hub, a holder 3, and a fixing wing 4, in which the movable unit 1 is provided on the holder 3 so as to be capable of sliding in the axial direction, is capable of changing in position between a position in use and a stored position which is behind the position in use, and the movable unit 1 is fixed to the position in use so as to be releasable. The holder 3 includes a protecting cylinder 26 which stores only the front portion including a blade point 6A of the cannula 6 in the interior thereof when the movable unit is positioned at the stored position and is provided with the fixing wing 4, and a guide member 27 exposed upward for guiding the sliding movement of the movable unit 1.Type: ApplicationFiled: June 7, 2007Publication date: September 16, 2010Inventors: Katsuhiro Hiejima, Yukinori Ebara
-
Patent number: D940326Type: GrantFiled: May 13, 2020Date of Patent: January 4, 2022Assignee: NIPRO CORPORATIONInventors: Yoshiharu Kinoshita, Atsunori Nakano, Katsuhiro Hiejima, Tomoyuki Uchida, Masanori Yakabe, Yoshitaka Ukita, Masahide Harada