Patents by Inventor Yasunobu Zushi
Yasunobu Zushi 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: 11590315Abstract: Provided is an indwelling catheter which is stiff when being inserted into a vessel such as a blood vessel, softens after indwelling in the vessel, and conforms to a shape in a direction in which the vessel runs. In the indwelling catheter, the maximum value of a catheter repulsive force in a dry state at 25° C. is 0.10 N or more; the maximum value of the catheter repulsive force when immersed in warm water at 37° C. is 0.01 to 0.25 N; a ratio of the maximum value of the catheter repulsive force in a dry state at 25° C. to the maximum value of the catheter repulsive force when immersed in warm water at 37° C. is in a range of 3.5:1 or more; and the maximum value of the catheter repulsive force when immersed in warm water at 37° C. is 0.027 N or less after 5 minutes from indwelling.Type: GrantFiled: September 5, 2019Date of Patent: February 28, 2023Assignee: TERUMO KABUSHIKI KAISHAInventors: Manabu Miura, Yasunobu Zushi, Shinya Kusunoki
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Patent number: 11298508Abstract: A catheter assembly includes a catheter, a catheter hub, an inner needle, and an inner needle hub. The catheter assembly is disposed in a hollow portion axially extending in the interior of the inner needle, and includes a blunt needle having a distal end portion blunter than a needle tip and a movement mechanism for moving the blunt needle. The movement mechanism is configured separately from the catheter hub and causes the distal end of the blunt needle to protrude beyond the needle tip along with the movement of the catheter.Type: GrantFiled: September 20, 2019Date of Patent: April 12, 2022Assignee: TERUMO KABUSHIKI KAISHAInventors: Masahiro Ishida, Yasunobu Zushi
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Publication number: 20210361405Abstract: An implant insertion device includes: a tubular body having a distal portion that is insertable into subcutaneous tissue and an insertion hole that extends proximally from the distal portion in an axial direction; an elongated implant configured to promote tissue regeneration by attachment of cells; and an elongated body that is accommodated in the insertion hole of the tubular body and is configured to move along the insertion hole of the tubular body and to protrude from the distal portion of the tubular body. The elongated body is configured to advance with respect to the tubular body and thereby push a distal portion of the implant in a distal direction from the insertion hole of the tubular body.Type: ApplicationFiled: August 5, 2021Publication date: November 25, 2021Applicant: TERUMO KABUSHIKI KAISHAInventors: Hidenori TANABE, Manabu MIURA, Yasunobu ZUSHI
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Patent number: 11135418Abstract: A catheter includes: a first port; a second port; a first lumen communicating with the first port; a second lumen configured to selectively communicate with the first port and/or the second port; and a switching mechanism part selectively switchable between a first switching state in which the first port and the second lumen communicate with each other and a second switching state in which communication between the first port and the second lumen is blocked.Type: GrantFiled: September 21, 2018Date of Patent: October 5, 2021Assignee: TERUMO KABUSHIKI KAISHAInventors: Yasunobu Zushi, Shinya Kusunoki, Shinichi Mizuno, Takanori Tominaga
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Patent number: 10799693Abstract: A connector of the present invention includes a housing and a valve, wherein the housing has a flow path and a pipe connecting port, and the valve is formed of an elastic material and is adapted to block the pipe connecting port. The valve has a substantially columnar deformable portion. The deformable portion has a top surface exposed from the pipe connecting port, a bottom surface opposite to the top surface, and a slit that reaches extends from the top surface to the bottom surface. When the top surface is pressed by the pipe, the deformable portion of the valve will be displaced toward the flow path while elastically deforming, so that inner surfaces that define the slit will face the flow path, and the top surface will form an opening that communicates with the flow path.Type: GrantFiled: July 20, 2018Date of Patent: October 13, 2020Assignee: TERUMO KABUSHIKI KAISHAInventors: Yasuhiro Ueda, Yasunobu Zushi
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Publication number: 20200023167Abstract: A catheter assembly includes a catheter, a catheter hub, an inner needle, and an inner needle hub. The catheter assembly is disposed in a hollow portion axially extending in the interior of the inner needle, and includes a blunt needle having a distal end portion blunter than a needle tip and a movement mechanism for moving the blunt needle. The movement mechanism is configured separately from the catheter hub and causes the distal end of the blunt needle to protrude beyond the needle tip along with the movement of the catheter.Type: ApplicationFiled: September 20, 2019Publication date: January 23, 2020Inventors: Masahiro ISHIDA, Yasunobu ZUSHI
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Publication number: 20190388593Abstract: Provided is an indwelling catheter which is stiff when being inserted into a vessel such as a blood vessel, softens after indwelling in the vessel, and conforms to a shape in a direction in which the vessel runs. In the indwelling catheter, the maximum value of a catheter repulsive force in a dry state at 25° C. is 0.10 N or more; the maximum value of the catheter repulsive force when immersed in warm water at 37° C. is 0.01 to 0.25 N; a ratio of the maximum value of the catheter repulsive force in a dry state at 25° C. to the maximum value of the catheter repulsive force when immersed in warm water at 37° C. is in a range of 3.5:1 or more; and the maximum value of the catheter repulsive force when immersed in warm water at 37° C. is 0.027 N or less after 5 minutes from indwelling.Type: ApplicationFiled: September 5, 2019Publication date: December 26, 2019Applicant: TERUMO KABUSHIKI KAISHAInventors: Manabu MIURA, Yasunobu ZUSHI, Shinya KUSUNOKI
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Publication number: 20190022370Abstract: A catheter includes: a first port; a second port; a first lumen communicating with the first port; a second lumen configured to selectively communicate with the first port and/or the second port; and a switching mechanism part selectively switchable between a first switching state in which the first port and the second lumen communicate with each other and a second switching state in which communication between the first port and the second lumen is blocked.Type: ApplicationFiled: September 21, 2018Publication date: January 24, 2019Applicant: TERUMO KABUSHIKI KAISHAInventors: Yasunobu ZUSHI, Shinya KUSUNOKI, Shinichi MIZUNO, Takanori TOMINAGA
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Publication number: 20180326199Abstract: A connector of the present invention includes a housing and a valve, wherein the housing has a flow path and a pipe connecting port, and the valve is formed of an elastic material and is adapted to block the pipe connecting port. The valve has a substantially columnar deformable portion. The deformable portion has a top surface exposed from the pipe connecting port, a bottom surface opposite to the top surface, and a slit that reaches extends from the top surface to the bottom surface. When the top surface is pressed by the pipe, the deformable portion of the valve will be displaced toward the flow path while elastically deforming, so that inner surfaces that define the slit will face the flow path, and the top surface will form an opening that communicates with the flow path.Type: ApplicationFiled: July 20, 2018Publication date: November 15, 2018Applicant: Terumo Kabushiki KaishaInventors: Yasuhiro Ueda, Yasunobu Zushi
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Patent number: 10046157Abstract: A connector of the present invention includes a housing and a valve, wherein the housing has a flow path and a pipe connecting port, and the valve is formed of an elastic material and is adapted to block the pipe connecting port. The valve has a substantially columnar deformable portion. The deformable portion has a top surface exposed from the pipe connecting port, a bottom surface opposite to the top surface, and a slit that extends from the top surface to the bottom surface. When the top surface is pressed by the pipe, the deformable portion of the valve will be displaced toward the flow path while elastically deforming, so that inner surfaces that define the slit will face the flow path, and the top surface will form an opening that communicates with the flow path.Type: GrantFiled: September 27, 2011Date of Patent: August 14, 2018Assignee: TERUMO KABUSHIKI KAISHAInventors: Yasuhiro Ueda, Yasunobu Zushi
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Patent number: 9901727Abstract: A connector includes a housing having a flow path through which liquid passes, and a male connector connecting portion having a substantially circular tube hole communicating with the flow path; and a valve formed of an elastic material and adapted to block the male connector connecting portion of the housing. The valve includes a top surface exposed from the male connector connecting portion, a bottom surface opposite to the top surface, and a slit opened at least on the top surface or the bottom surface. The housing includes a stopping portion configured to be engaged with a tip end of a male connector to define an insertion length of the male connector.Type: GrantFiled: July 24, 2014Date of Patent: February 27, 2018Assignee: TERUMO KABUSHIKI KAISHAInventors: Yasuhiro Ueda, Yasunobu Zushi, Kouhei Taoka
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Patent number: 9867966Abstract: A catheter assembly includes: an inner needle; an inner needle hub connected to the inner needle; a catheter through which the inner needle is inserted; a catheter hub connected to a proximal end portion of the catheter; and a protector that covers at least the tip of the inner needle when the inner needle is withdrawn. The protector includes: an inner tube, and an outer tube. The inner tube includes at least one arm that releasably engages with a proximal end of the catheter hub. The catheter assembly is configured such that, when the inner needle is withdrawn, after the tip of the inner needle has been stored in the protector, the outer tube is retracted with respect to the inner tube thereby allowing the at least one arm to be displaced outwardly, whereby engagement between the at least one arm and the catheter hub is released.Type: GrantFiled: November 14, 2014Date of Patent: January 16, 2018Assignees: TERUMO KABUSHIKI KAISHA, MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Hidenori Tanabe, Yasunobu Zushi
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Publication number: 20160015942Abstract: A catheter assembly includes an inner needle having a sharp tip at a distal end thereof; a catheter in which the inner needle is disposed; a catheter hub disposed on a proximal end side of the catheter and through which the inner needle is insertable; an inner needle hub disposed on a proximal end side of the inner needle; and a protector mounted detachably on the inner needle hub, the protector being configured to cover at least the tip of the inner needle. The protector includes a movement prevention unit, the movement prevention unit being configured to prevent movement of the catheter toward the tip with respect to the inner needle in a state in which a distal end side of the inner needle protrudes a predetermined length from the catheter.Type: ApplicationFiled: September 30, 2015Publication date: January 21, 2016Applicants: Terumo Kabushiki Kaisha, Mitsubishi Pencil Company, LimitedInventors: Yuya TERASAWA, Yasunobu ZUSHI
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Publication number: 20160015941Abstract: A catheter assembly includes an inner needle having a sharp tip at a distal end thereof; a catheter in which the inner needle is disposed; a tip protective member having an insertion hole through which the inner needle is insertable, the tip protective member being configured to cover at least a tip of the inner needle when the inner needle is withdrawn; and a shutter member which is arranged in an interior of a shutter accommodating section provided in the tip protective member, the shutter member being configured to be deformed and thereby block a movement path of the inner needle in the shutter accommodating section when the inner needle is retracted to a predetermined position relative to the tip protective member. The shutter accommodating section includes a needle guide configured to guide movement of the inner needle.Type: ApplicationFiled: September 30, 2015Publication date: January 21, 2016Applicants: Terumo Kabushiki Kaisha, Mitsubishi Pencil Company, LimitedInventors: Hidenori TANABE, Yasunobu ZUSHI
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Patent number: 9089680Abstract: A connector comprises a housing; a main flow path being configured such that fluid is flowable from a first tube through the main flow path into a second tube; and a connection terminal including a connection side space, the connection terminal being configured such that a third tube is connectable to the connection terminal and an auxiliary flow path of the third tube communicates with the main flow path via the connection side space. The main flow path includes a main flow path side space that is continuous with at least the connection side space and is defined by: a bottom part facing the connection side space and a pair of side parts extending from opposite sides of the bottom part toward the connection side space, and at least one wall surface configured to direct the fluid toward the connection side space and toward at least one of the side parts.Type: GrantFiled: March 26, 2014Date of Patent: July 28, 2015Assignee: TERUMO KABUSHIKI KAISHAInventors: Yasuhiro Ueda, Yasunobu Zushi
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Publication number: 20150080801Abstract: A catheter assembly including: an inner needle having a sharp tip at a distal end thereof; an inner needle hub connected to a proximal end portion of the inner needle; a catheter through which the inner needle is inserted; a catheter hub connected to a proximal end portion of the catheter; and a protector that covers at least the tip of the inner needle when the inner needle is withdrawn. The protector includes: an inner tube that includes at least one arm that releasably engages with a proximal end of the catheter hub from an outer side of the catheter hub; and an outer tube inside which the inner tube is arranged, and which is capable of being displaced in an axial direction relative to the inner tube.Type: ApplicationFiled: November 14, 2014Publication date: March 19, 2015Inventors: Hidenori TANABE, Yasunobu ZUSHI
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Publication number: 20140332091Abstract: A connector includes a housing having a flow path through which liquid passes, and a male connector connecting portion having a substantially circular tube hole communicating with the flow path; and a valve formed of an elastic material and adapted to block the male connector connecting portion of the housing. The valve includes a top surface exposed from the male connector connecting portion, a bottom surface opposite to the top surface, and a slit opened at least on the top surface or the bottom surface. The housing includes a stopping portion configured to be engaged with a tip end of a male connector to define an insertion length of the male connector.Type: ApplicationFiled: July 24, 2014Publication date: November 13, 2014Inventors: Yasuhiro Ueda, Yasunobu Zushi, Kouhei Taoka
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Publication number: 20140207117Abstract: A connector comprises a housing; a main flow path being configured such that fluid is flowable from a first tube through the main flow path into a second tube; and a connection terminal including a connection side space, the connection terminal being configured such that a third tube is connectable to the connection terminal and an auxiliary flow path of the third tube communicates with the main flow path via the connection side space. The main flow path includes a main flow path side space that is continuous with at least the connection side space and is defined by: a bottom part facing the connection side space and a pair of side parts extending from opposite sides of the bottom part toward the connection side space, and at least one wall surface configured to direct the fluid toward the connection side space and toward at least one of the side parts.Type: ApplicationFiled: March 26, 2014Publication date: July 24, 2014Applicant: Terumo Kabushiki KaishaInventors: Yasuhiro UEDA, Yasunobu ZUSHI
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Publication number: 20130237923Abstract: A connector of the present invention includes a housing and a valve, wherein the housing has a flow path and a pipe connecting port, and the valve is formed of an elastic material and is adapted to block the pipe connecting port. The valve has a substantially columnar deformable portion. The deformable portion has a top surface exposed from the pipe connecting port, a bottom surface opposite to the top surface, and a slit that extends from the top surface to the bottom surface. When the top surface is pressed by the pipe, the deformable portion of the valve will be displaced toward the flow path while elastically deforming, so that inner surfaces that define the slit will face the flow path, and the top surface will form an opening that communicates with the flow path.Type: ApplicationFiled: September 27, 2011Publication date: September 12, 2013Applicant: TERUMO KABUSHIKI KAISHAInventors: Yasuhiro Ueda, Yasunobu Zushi
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Publication number: 20020002363Abstract: A catheter is made of a melt-extruded polymeric material consisting of non-polyvinyl chloride. The catheter has a loss tangent not less than 0.15, when the dynamic viscoelasticity thereof is measured at 25° C. in a longitudinal vibration thereof. The catheter has a kinking resistance not less than 25 mm, when the catheter having a length of 70 mm is used under a dry condition at room temperature.Type: ApplicationFiled: April 27, 2001Publication date: January 3, 2002Inventors: Ryuichi Urakawa, Yasunobu Zushi