Stent delivery device
First Claim
1. A stent delivery device comprising:
- a distal-side tube having a guide wire lumen;
a proximal-side tube whose distal portion is fixed to a proximal portion of said distal-side tube;
a cylindrical member which encloses a distal side of said distal-side tube and is slidable toward a proximal end of said distal-side tube;
a stent housed in said cylindrical member; and
a pulling wire which extends inside said proximal-side tube, with one end portion thereof fixed to said cylindrical member, wherein said distal-side tube has a proximal-side opening which is open at said proximal side of said distal-side tube and communicates with said guide wire lumen; and
a stent-locking portion which is disposed at said distal side of said distal-side tube and contacts a proximal end of said stent, thus preventing said stent from moving to said proximal side of said stent delivery device; and
said stent is formed approximately cylindrically, housed in said cylindrical member, with said stent being compressed in an axial direction thereof, and expands outward and returns to a configuration before said stent is compressed, when said stent is implanted in an organism;
said stent delivery device further comprising an operation portion, disposed at a proximal portion of said proximal-side tube, which has a pulling wire winding mechanism for winding said pulling wire and moving said cylindrical member toward a proximal side of said stent delivery device.
1 Assignment
0 Petitions
Accused Products
Abstract
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.
141 Citations
36 Claims
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1. A stent delivery device comprising:
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a distal-side tube having a guide wire lumen;
a proximal-side tube whose distal portion is fixed to a proximal portion of said distal-side tube;
a cylindrical member which encloses a distal side of said distal-side tube and is slidable toward a proximal end of said distal-side tube;
a stent housed in said cylindrical member; and
a pulling wire which extends inside said proximal-side tube, with one end portion thereof fixed to said cylindrical member, wherein said distal-side tube has a proximal-side opening which is open at said proximal side of said distal-side tube and communicates with said guide wire lumen; and
a stent-locking portion which is disposed at said distal side of said distal-side tube and contacts a proximal end of said stent, thus preventing said stent from moving to said proximal side of said stent delivery device; and
said stent is formed approximately cylindrically, housed in said cylindrical member, with said stent being compressed in an axial direction thereof, and expands outward and returns to a configuration before said stent is compressed, when said stent is implanted in an organism;
said stent delivery device further comprising an operation portion, disposed at a proximal portion of said proximal-side tube, which has a pulling wire winding mechanism for winding said pulling wire and moving said cylindrical member toward a proximal side of said stent delivery device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 34, 35, 36)
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23. A stent delivery device comprising:
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a distal-side tube having a guide wire lumen;
a proximal-side tube whose distal portion is fixed to a proximal portion of said distal-side tube;
a cylindrical member which encloses a distal side of said distal-side tube and is slidable toward a proximal end of said distal-side tube;
a stent housed in said cylindrical member; and
a pulling member which extends inside said proximal-side tube, with one end portion thereof fixed to said cylindrical member and is pulled toward said proximal side of said proximal-side tube to move said cylindrical member toward a proximal side of said stent delivery device, wherein said distal-side tube has a proximal-side opening which is open at said proximal side of said distal-side tube and communicates with said guide wire lumen; and
a stent-locking portion which is disposed at said distal side of said distal-side tube and contacts a proximal end of said stent accommodated inside said cylindrical member, thus preventing said stent from moving to said proximal side of said stent delivery device; and
said stent is formed approximately cylindrically, accommodated in said cylindrical member, with said stent being compressed in an axial direction thereof, and expands outward and returns to a configuration before said stent is compressed, when said stent is implanted in an organism; and
an outer diameter of said proximal-side tube is set smaller than an outer diameter of a portion, having a maximum diameter, which is disposed in a region distal from said proximal-side tube. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification