Time filter

Source Type

Patent
Kyoto Medical Planning Co. | Date: 2016-11-02

A vascular stent (1) for scaffolding a vessel (11) from the inside, wherein the stent is provided with a plurality of tube-forming elements (3A), (3B), and (3C) for forming a tube (2), the tube-forming elements combining with each other to construct a single flow path. Each of the tube-forming elements is formed by bending a strand comprising a single continuous biodegradable polymer, and first and second projecting parts (4, 5) are formed by successive alternation. Formation occurs in multiple stages in the axial direction of the tube by connecting using connecting legs (6) for successively connecting one side of the first projecting part and the other side of the second projecting part where the first and second projecting parts successively alternate. Elastic displacement parts (9) for performing elastic displacement by applying a pressing force to the tube are formed in the middle of the connecting legs successively connecting the first and second projecting parts of the tube-forming elements.


Patent
Kyoto Medical Planning Co. | Date: 2013-05-29

Present invention is a stent apparatus wherein a stent covering member (3) holds a stent (2), which scaffolds a blood vessel from the inside when implanted in the blood vessel, in contracted state. The stent is formed of a biodegradable polylactic acid (PLA) as a tubular shape, shape memorized to a size capable of, when implanted in a vessel, scaffolding the blood vessel from the inside. This stent is held by the stent covering member in contracted state and mounted on a balloon (12) of a balloon (11). The covering member is formed of a biodegradable polymer having elasticity as a cylindrical shape having an inner diameter to keep the stent in contracted state and, when the stent is expanded to the shape memorized shape, plastically deformed to release the holding of the stent. The stent and the stent covering member disappear in a vessel after they are implanted in the vessel.


Patent
Kyoto Medical Planning Co. | Date: 2014-12-03

A vascular stent (1) for scaffolding a vessel (11) from the inside, wherein the stent is provided with a plurality of tube-forming elements (3A), (3B), and (3C) for forming a tube (2), the tube-forming elements combining with each other to construct a single flow path. Each of the tube-forming elements is formed by bending a strand comprising a single continuous biodegradable polymer, and first and second projecting parts (4, 5) are formed by successive alternation. Formation occurs in multiple stages in the axial direction of the tube by connecting using connecting legs (6) for successively connecting one side of the first projecting part and the other side of the second projecting part where the first and second projecting parts successively alternate. Elastic displacement parts (9) for performing elastic displacement by applying a pressing force to the tube are formed in the middle of the connecting legs successively connecting the first and second projecting parts of the tube-forming elements.


Patent
Kyoto Medical Planning Co. | Date: 2013-10-09

This invention is a catheter apparatus comprising a catheter (2) and a sheath (1) into which the catheter is inserted. The catheter has a distal end to which an insertion guiding member (5) is attached, provided at its distal end with a balloon (3) to expand a vascular stent (4), and provided with an expansion medium supplying channel for supplying an expansion medium to inflate the balloon and with a guide wire insertion channel for inserting a guide wire. The sheath into which the catheter is inserted is operated to move relative to the catheter between the section where it is covering the balloon attaching the vascular stent and the section where it is supposed to expose the vascular stent attached to the balloon. Between the sheath and the catheter, a first movement restrictor (35) protruding from the distal end of the catheter for restricting movement overpassing the insertion guiding member and a second movement restrictor (40) for restricting protruding-out length of the end portion of the catheter are provided, thereby restricting movable position of the sheath relative to the catheter such that excessive movement of the sheath is restricted, injuring of a blood vessel is prevented and the stent is surely implanted to a desired site in a blood vessel.


Patent
Kyoto Medical Planning Co. | Date: 2012-08-01

Present invention is a medical catheter apparatus used for implanting a vascular stent into a vessel of a living body comprising a catheter (2) provided with a balloon (3), on which a vascular stent (4) is mounted, and a sheath into which the catheter is relatively movably inserted. The catheter is provided at the middle portion with a guide wire leading-out opening (11) for leading out the inserted guide wire (9) toward the side direction of the catheter, the sheath is provided at a middle portion with a guide wire drawing-out opening (13) for drawing the guide wire drawn from the catheter out of the sheath, and a guide wire drawing-out guiding mechanism (14) is provided between the guide wire leading-out opening and the guide wire drawing-out opening for guiding the guide wire led out from the guide wire leading-out opening to the guide wire drawing-out opening. The guide wire drawing-out guiding mechanism has a variable length from the guide wire leading-out opening to the guide wire drawing-out opening which varies in accordance with the relative movement of the sheath with respect to the catheter.


Patent
Kyoto Medical Planning Co. | Date: 2012-02-17

An object is to surely hold a stent formed of a biodegradable polymer and shape memorized to an expanded size having a diameter larger than an inner diameter of a vessel on a balloon in contracted state. A stent apparatus comprises a stent formed of a biodegradable polymer material using polylactic acid having a shape memory property as a tubular shape and shape memorized to a size capable of scaffolding a vessel from the inside when implanted in the vessel; and a stent holding member formed of a biodegradable polymer material for covering the outer surface of the stent to hold the stent in a contracted state that is smaller in diameter than the shape memorized size, wherein a stent detecting member is attached to the stent and a part of the stent holding member is fixed to the stent detecting member.


Patent
Kyoto Medical Planning Co. | Date: 2014-01-08

An object is to surely hold a stent formed of a biodegradable polymer and shape memorized to an expanded size having a diameter larger than an inner diameter of a vessel on a balloon in contracted state. A stent apparatus comprises a stent formed of a biodegradable polymer material using polylactic acid having a shape memory property as a tubular shape and shape memorized to a size capable of scaffolding a vessel from the inside when implanted in the vessel; and a stent holding member formed of a biodegradable polymer material for covering the outer surface of the stent to hold the stent in a contracted state that is smaller in diameter than the shape memorized size, wherein a stent detecting member is attached to the stent and a part of the stent holding member is fixed to the stent detecting member to prevent dislocation between the stent and the stent holding member.


Patent
Kyoto Medical Planning Co. | Date: 2011-07-15

Present invention is a stent apparatus in which a stent to scaffold a vessel from the inside is held by a stent covering member comprising: a tubular cartridge expandable and contractible in radial direction, the expansion of which in axial direction orthogonal to the radial direction being restricted; a stent formed of a biodegradable polymer as a tubular shape, shape memorized to an expanded size larger than an inner diameter of a target blood vessel in which the stent is to be implanted, and mounted to the tubular cartridge in contracted state; and a stent covering member formed of a biodegradable polymer having elasticity as a cylindrical shape having an inner diameter to keep the stent in contracted state by holding an outer surface of the stent and, when the stent is expanded to the shape memorized shape, plastically deformed to release the holding of the stent.


Patent
Kyoto Medical Planning Co. | Date: 2013-05-29

Present invention is a stent apparatus (1) in which a stent (3) to scaffold a vessel from the inside is held by a stent covering member (4) comprising: a tubular cartridge (2) expandable and contractible in radial direction, the expansion of which in axial direction orthogonal to the radial direction being restricted; a stent formed of a biodegradable polymer as a tubular shape, shape memorized to an expanded size larger than an inner diameter of a target blood vessel in which the stent is to be implanted, and mounted to the tubular cartridge in contracted state; and a stent covering member formed of a biodegradable polymer having elasticity as a cylindrical shape having an inner diameter to keep the stent in contracted state by holding an outer surface of the stent and, when the stent is expanded to the shape memorized shape, plastically deformed to release the holding of the stent. The stent is expanded together with the stent covering member along with expansion of the tubular cartridge in radial direction and released together with the stent covering member from the tubular cartridge by contraction of the tubular cartridge in radial direction.


Patent
Kyoto Medical Planning Co. | Date: 2012-08-01

Present invention is a medical catheter apparatus used for implanting a vascular stent into a vessel of a living body comprising a catheter (2) including a distal portion where a balloon (3) attaching a vascular stent (4) is provided, and a sheath (1) into which the catheter is inserted and to be moved relative to the catheter between the section where it covers the balloon on which a vascular stent is mounted and the section where it exposes the vascular stent mounted on the balloon. The sheath comprises a first tubular member (15) covering the distal portion at which the balloon is provided, and a second tubular member (16) covering the proximal portion of the catheter and connected with the first tubular member. The first tubular member is formed of a tubular member capable of flexible deformation and the second tubular member is formed of a tubular member less extensible in the axial direction than the first tubular member.

Loading Kyoto Medical Planning Co. collaborators
Loading Kyoto Medical Planning Co. collaborators