Patents by Inventor Yousuke Moriuchi
Yousuke Moriuchi 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: 8419784Abstract: A stent delivery device includes a distal-side tube having a guide wire lumen; a proximal-side tube whose distal portion is fixed to a proximal portion of the distal-side tube; a cylindrical member which encloses a distal side of the distal-side tube and is slidable toward a proximal end of the distal-side tube; a stent accommodated in the cylindrical member; and a pulling member 6 for moving the cylindrical member toward a proximal side of the stent delivery device. The distal-side tube has a proximal-side opening which is open at the proximal side of the distal-side tube; and a stent-locking portion for preventing the stent from moving to the proximal side of the stent delivery device. The outer diameter of the proximal-side tube is set smaller than that of a portion, having a maximum diameter, which is disposed in a region of the stent delivery device which is distal from the proximal-side tube.Type: GrantFiled: September 10, 2010Date of Patent: April 16, 2013Assignee: Terumo Kabushiki KaishaInventors: Emi Matsuoka, Keitaro Morishita, Yousuke Moriuchi
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Patent number: 8287587Abstract: A self-expandable stent includes axially arranged wavy-line annular bodies having a first shared linear portion and a second shared linear portion on one end side, a third shared linear portion and a fourth shared linear portion on the other end side, a first bent linear portion coupled with the first and third shared linear portions, a second bent linear portion coupled with the third and second shared linear portions, a third bent linear portion coupled with the second and fourth shared linear portions, and a fourth bent linear portion coupled with the fourth and first shared linear portions. Two of the four bent linear portions have a first equal number of bends and a common form at inversion, and the other two of the four bent linear portions have an equal number of bends different from the first equal number of bends and a common form at inversion.Type: GrantFiled: June 26, 2009Date of Patent: October 16, 2012Assignee: Terumo Kabushiki KaishaInventor: Yousuke Moriuchi
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Publication number: 20100331953Abstract: A stent delivery device includes a distal-side tube having a guide wire lumen; a proximal-side tube whose distal portion is fixed to a proximal portion of the distal-side tube; a cylindrical member which encloses a distal side of the distal-side tube and is slidable toward a proximal end of the distal-side tube; a stent accommodated in the cylindrical member; and a pulling member 6 for moving the cylindrical member toward a proximal side of the stent delivery device. The distal-side tube has a proximal-side opening which is open at the proximal side of the distal-side tube; and a stent-locking portion for preventing the stent from moving to the proximal side of the stent delivery device. The outer diameter of the proximal-side tube is set smaller than that of a portion, having a maximum diameter, which is disposed in a region of the stent delivery device which is distal from the proximal-side tube.Type: ApplicationFiled: September 10, 2010Publication date: December 30, 2010Applicant: Terumo Kabushiki KaishaInventors: Emi Matsuoka, Keitaro Morishita, Yousuke Moriuchi
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Patent number: 7815669Abstract: A stent delivery device includes a distal-side tube having a guide wire lumen; a proximal-side tube whose distal portion is fixed to a proximal portion of the distal-side tube; a cylindrical member which encloses a distal side of the distal-side tube and is slidable toward a proximal end of the distal-side tube; a stent accommodated in the cylindrical member; and a pulling member 6 for moving the cylindrical member toward a proximal side of the stent delivery device. The distal-side tube has a proximal-side opening which is open at the proximal side of the distal-side tube; and a stent-locking portion for preventing the stent from moving to the proximal side of the stent delivery device. The outer diameter of the proximal-side tube is set smaller than that of a portion, having a maximum diameter, which is disposed in a region of the stent delivery device which is distal from the proximal-side tube.Type: GrantFiled: March 28, 2006Date of Patent: October 19, 2010Assignee: Terumo Kabushiki KaishaInventors: Emi Matsuoka, Keitaro Morishita, Yousuke Moriuchi
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Patent number: 7766957Abstract: A stent is formed as a substantially tubular body possessing an outer diameter suitable for insertion into an organism, with the body being expandable when a radially outwardly directed expansion force is applied from inside the tubular body. The stent is fabricated from an alloy containing at least two noble metals selected among gold, platinum, silver, and copper, with the alloy possessing a density of not less than 14 g/cm3, a proof stress of not less than 300 MPa, and a elongation-to-break of not less than 20%.Type: GrantFiled: March 29, 2007Date of Patent: August 3, 2010Assignee: Terumo Kabushiki KaishaInventor: Yousuke Moriuchi
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Patent number: 7651524Abstract: A stent to be implanted in an organism includes a plurality of wavy annular members arranged in an axial direction thereof. Each of the wavy annular members has a plurality of one-end side bent portions each having an apex at a one-end side of the stent in the axial direction thereof and a plurality of other-end side bent portions each having an apex at an other-end side of the stent in the axial direction thereof. In the wavy annular members disposed adjacently to each other in the axial direction of the stent the wavy annular members disposed at the one-end side of the stent in the axial direction thereof has a sharing linear portion having a start point at the apex of one of the other-end side bent portions thereof or in the vicinity of the apex and a termination point between the apex of the other-end side bent portion thereof and the apex of one of the one-end side bent portions thereof. The sharing linear portion integrates the adjacent wavy annular members with each other.Type: GrantFiled: September 28, 2007Date of Patent: January 26, 2010Assignee: Terumo Kabushiki KaishaInventors: Yousuke Moriuchi, Hideaki Yamashita
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Publication number: 20090319027Abstract: A self-expandable stent includes axially arranged wavy-line annular bodies having a first shared linear portion and a second shared linear portion on one end side, a third shared linear portion and a fourth shared linear portion on the other end side, a first bent linear portion coupled with the first and third shared linear portions, a second bent linear portion coupled with the third and second shared linear portions, a third bent linear portion coupled with the second and fourth shared linear portions, and a fourth bent linear portion coupled with the fourth and first shared linear portions. Two of the four bent linear portions have a first equal number of bends and a common form at inversion, and the other two of the four bent linear portions have an equal number of bends different from the first equal number of bends and a common form at inversion.Type: ApplicationFiled: June 26, 2009Publication date: December 24, 2009Applicant: TERUMO KABUSHIKI KAISHAInventor: Yousuke MORIUCHI
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Patent number: 7618445Abstract: A stent (1) to be implanted in an organism includes a plurality of wavy annular members (2) arranged in an axial direction thereof. Each of the wavy annular members (2) has a plurality of one-end side bent portions each having an apex (2a) at a one-end side of the stent (1) in the axial direction thereof and a plurality of other-end side bent portions each having an apex (2b) at an other-end side of the stent (1) in the axial direction thereof. In the wavy annular members disposed adjacently to each other in the axial direction of the stent, the wavy annular members (2) disposed at the one-end side of the stent in the axial direction thereof has a sharing linear portion (21) having a start point (22) at the apex (2b) of one of the other-end side bent portions thereof or in the vicinity of the apex (2b) and a termination point (23) between the apex (2b) of the other-end side bent portion thereof and the apex (2a) of one of the one-end side bent portions thereof.Type: GrantFiled: March 30, 2006Date of Patent: November 17, 2009Assignee: Terumo Kabushiki KaishaInventors: Yousuke Moriuchi, Hideaki Yamashita
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Patent number: 7540930Abstract: A stent, to be implanted in a human body, is made of a super-elastic metal which is formed approximately cylindrically and integrally and which shows super-elasticity before and after said stent is inserted into said human body. The stent has a plurality of annular parts (expansion element) deformable in a direction in which an outer diameter thereof contracts, when a stress is applied thereto and a plurality of connection parts (connection element) each connecting said adjacent annular parts to each other, with said annular parts arranged in an axial direction of said stent. Each of said annular parts is elastically deformable owing to super-elasticity thereof, whereas each of said connection parts is substantially a plastically deformable part not super-elastic entirely or partly.Type: GrantFiled: October 19, 2006Date of Patent: June 2, 2009Assignee: Terumo Kabushiki KaishaInventors: Yousuke Moriuchi, Takeshi Kudou
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Patent number: 7431732Abstract: A stent includes a plurality of annular expanding members arranged a predetermined distance apart from each other in the axial direction of the stent and each formed of a waved element, and a plurality of waved connecting members connecting the ridges and/or bottoms of the waved elements of adjacent annular expanding members. The plural annular expanding members are arranged in the axial direction of the stent such that no substantial phase difference exists between the waves of the waved element. Each waved connecting member has a plurality of waves including a wave positioned in the clearance between the adjacent annular expanding members and having an amplitude larger than that of the other wave. Also disclosed is a stent in which the expanding member is formed of a waved element arranged to surround spirally the longitudinal axis of the stent.Type: GrantFiled: January 15, 2002Date of Patent: October 7, 2008Assignee: Terumo Kabushiki KaishaInventors: Yousuke Moriuchi, Takashi Kitaoka
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Publication number: 20080097587Abstract: A stent to be implanted in an organism includes a plurality of wavy annular members arranged in an axial direction thereof. Each of the wavy annular members has a plurality of one-end side bent portions each having an apex at a one-end side of the stent in the axial direction thereof and a plurality of other-end side bent portions each having an apex at an other-end side of the stent in the axial direction thereof. In the wavy annular members disposed adjacently to each other in the axial direction of the stent the wavy annular members disposed at the one-end side of the stent in the axial direction thereof has a sharing linear portion having a start point at the apex of one of the other-end side bent portions thereof or in the vicinity of the apex and a termination point between the apex of the other-end side bent portion thereof and the apex of one of the one-end side bent portions thereof. The sharing linear portion integrates the adjacent wavy annular members with each other.Type: ApplicationFiled: September 28, 2007Publication date: April 24, 2008Applicant: Terumo Kabushiki KaishaInventors: Yousuke Moriuchi, Hideaki Yamashita
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Publication number: 20070233234Abstract: A stent is formed as a substantially tubular body possessing an outer diameter suitable for insertion into an organism, with the body being expandable when a radially outwardly directed expansion force is applied from inside the tubular body. The stent is fabricated from an alloy containing at least two noble metals selected among gold, platinum, silver, and copper, with the alloy possessing a density of not less than 14 g/cm3, a proof stress of not less than 300 MPa, and a elongation-to-break of not less than 20%.Type: ApplicationFiled: March 29, 2007Publication date: October 4, 2007Applicant: TERUMO KABUSHIKI KAISHAInventor: Yousuke Moriuchi
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Publication number: 20070033789Abstract: A stent, to be implanted in a human body, is made of a super-elastic metal which is formed approximately cylindrically and integrally and which shows super-elasticity before and after said stent is inserted into said human body. The stent has a plurality of annular parts (expansion element) deformable in a direction in which an outer diameter thereof contracts, when a stress is applied thereto and a plurality of connection parts (connection element) each connecting said adjacent annular parts to each other, with said annular parts arranged in an axial direction of said stent. Each of said annular parts is elastically deformable owing to super-elasticity thereof, whereas each of said connection parts is substantially a plastically deformable part not super-elastic entirely or partly.Type: ApplicationFiled: October 19, 2006Publication date: February 15, 2007Applicant: TERUMO KABUSHIKI KAISHAInventors: Yousuke Moriuchi, Takeshi Kudou
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Publication number: 20060259124Abstract: A stent delivery device includes a distal-side tube having a guide wire lumen; a proximal-side tube whose distal portion is fixed to a proximal portion of the distal-side tube; a cylindrical member which encloses a distal side of the distal-side tube and is slidable toward a proximal end of the distal-side tube; a stent accommodated in the cylindrical member; and a pulling member 6 for moving the cylindrical member toward a proximal side of the stent delivery device. The distal-side tube has a proximal-side opening which is open at the proximal side of the distal-side tube; and a stent-locking portion for preventing the stent from moving to the proximal side of the stent delivery device. The outer diameter of the proximal-side tube is set smaller than that of a portion, having a maximum diameter, which is disposed in a region of the stent delivery device which is distal from the proximal-side tube.Type: ApplicationFiled: March 28, 2006Publication date: November 16, 2006Applicant: Terumo Kabushiki KaishaInventors: Emi Matsuoka, Keitaro Morishita, Yousuke Moriuchi
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Publication number: 20060253187Abstract: A stent (1) to be implanted in an organism includes a plurality of wavy annular members (2) arranged in an axial direction thereof. Each of the wavy annular members (2) has a plurality of one-end side bent portions each having an apex (2a) at a one-end side of the stent (1) in the axial direction thereof and a plurality of other-end side bent portions each having an apex (2b) at an other-end side of the stent (1) in the axial direction thereof. In the wavy annular members disposed adjacently to each other in the axial direction of the stent, the wavy annular members (2) disposed at the one-end side of the stent in the axial direction thereof has a sharing linear portion (21) having a start point (22) at the apex (2b) of one of the other-end side bent portions thereof or in the vicinity of the apex (2b) and a termination point (23) between the apex (2b) of the other-end side bent portion thereof and the apex (2a) of one of the one-end side bent portions thereof.Type: ApplicationFiled: March 30, 2006Publication date: November 9, 2006Applicant: Terumo Kabushiki KaishaInventors: Yousuke Moriuchi, Hideaki Yamashita
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Patent number: 7029492Abstract: A stent has a plurality of wavy annular members each formed of a narrow wavy element and arranged in the axial direction thereof; and a plurality of connection portions each connecting the adjacent wavy annular members to each other axially. The connection portion located in the vicinity of the axial center of the stent is weaker than other constituent parts of the stent and can be broken. That is, an inflating balloon catheter can be inserted into the stent such that the inflating balloon catheter penetrates through a side wall of the stent from its interior after the stent dilates radially. The connection portion can be broken by inflation of the balloon of the inflating balloon catheter.Type: GrantFiled: March 3, 2000Date of Patent: April 18, 2006Assignee: Terumo Kabushiki KaishaInventors: Kazuaki Mitsudou, Yousuke Moriuchi
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Publication number: 20030105513Abstract: A stent, to be implanted in a human body, is made of a super-elastic metal which is formed approximately cylindrically and integrally and which shows super-elasticity before and after said stent is inserted into said human body. The stent has a plurality of annular parts (expansion element) deformable in a direction in which an outer diameter thereof contracts, when a stress is applied thereto and a plurality of connection parts (connection element) each connecting said adjacent annular parts to each other, with said annular parts arranged in an axial direction of said stent. Each of said annular parts is elastically deformable owing to super-elasticity thereof, whereas each of said connection parts is substantially a plastically deformable part not super-elastic entirely or partly.Type: ApplicationFiled: October 22, 2002Publication date: June 5, 2003Inventors: Yousuke Moriuchi, Takeshi Kudou
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Publication number: 20020095207Abstract: A stent includes a plurality of annular expanding members arranged a predetermined distance apart from each other in the axial direction of the stent and each formed of a waved element, and a plurality of waved connecting members connecting the ridges and/or bottoms of the waved elements of adjacent annular expanding members. The plural annular expanding members are arranged in the axial direction of the stent such that no substantial phase difference exists between the waves of the waved element. Each waved connecting member has a plurality of waves including a wave positioned in the clearance between the adjacent annular expanding members and having an amplitude larger than that of the other wave. Also disclosed is a stent in which the expanding member is formed of a waved element arranged to surround spirally the longitudinal axis of the stent.Type: ApplicationFiled: January 15, 2002Publication date: July 18, 2002Inventors: Yousuke Moriuchi, Takashi Kitaoka
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Patent number: 6200337Abstract: A stent in the form of a generally tubular member has a diameter allowing for insertion into a body passageway and is radially expandable upon application of an outward force. A series of annular units are axially arranged to construct the stent. Each annular unit includes a plurality of generally ellipsoidal or polygonal elements equiangularly arranged around the stent axis, the elements being axially elongate and having a center opening. A tie member connects opposed ends of adjacent elements. Adjacent annular units are interconnected at their tie members by a connecting member.Type: GrantFiled: November 18, 1998Date of Patent: March 13, 2001Assignee: Terumo Kabushiki KaishaInventors: Yousuke Moriuchi, Toshinari Asaka, Masakiyo Nobuyoshi
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Patent number: 6174326Abstract: A stent having long-term antithrombogenicity and radiopacity whose location and geometry can be radiographically confirmed is provided. The production method is also provided. The stent of the invention has an antithrombogenic agent covalently bonded on it surface, and the antithrombogenic agent is immobilized onto the stent surface through coupling agent having at least two amino groups and a crosslinking agent having at least two aldehyde and/or epoxy groups. The stent of the invention also has a radiopaque metal plated on at least a part thereof.Type: GrantFiled: September 23, 1997Date of Patent: January 16, 2001Assignee: Terumo Kabushiki KaishaInventors: Takashi Kitaoka, Kazuhiko Hagiwara, Yousuke Moriuchi