US 2021/0275338 A1 · STENT DELIVERY DEVICE

Abstract

A stent delivery device that can be inserted into an endoscope. The device includes a guide catheter including a guide tube, an operating wire, and a joint portion that joins the guide tube and the wire. The device also includes a pusher catheter including a first tube through which the wire is inserted and a second tube through which the guide tube is inserted. The device may include a bite prevention portion that can prevent the wire from biting into an inner surface of the second tube. In a state where a distal end of the pusher catheter protrudes from the endoscope channel and the channel includes a curved portion in a curved state, a proximal end of the guide tube, which includes the joint portion, and/or the bite prevention portion can be positioned proximal of a proximal end of the curved portion in the endoscope channel.

Claims20

Dependent claims

A stent delivery device that is configured to be inserted into a channel of an endoscope, the stent delivery device comprising:

a guide catheter including:
a guide tube through which a guide wire can be inserted, and on which a tubular stent can be positioned,
an operating wire extending along a longitudinal axis, and
a joint portion that joins the guide tube and a distal end of the operating wire;
and
a pusher catheter including a first tube having a first lumen through which the operating wire is inserted and a second tube having a second lumen through which the guide tube is inserted, the second lumen being connected to the first lumen,
wherein in a state where:
(i) a distal end of the pusher catheter protrudes from the channel of the endoscope, (ii) the channel of the endoscope includes a curved portion that is in a curved state, and (iii) the stent is positioned on the guide tube, the guide tube is configured to extend from within the stent into the second lumen such that a proximal end of the guide tube, which includes the joint portion, is positioned proximal of a proximal end of the curved portion in the channel of the endoscope.

5 more elements

A stent delivery device that is configured to be inserted into a channel of an endoscope, the stent delivery device comprising:

a guide catheter including:
a guide tube through which a guide wire can be inserted, and on which a tubular stent can be positioned,
an operating wire extending along a longitudinal axis, and
a joint portion that joins the guide tube and a distal end of the operating wire;
a pusher catheter including a first tube having a first lumen through which the operating wire is inserted and a second tube having a second lumen through which the guide tube is inserted, the second lumen being connected to the first lumen;
and
a bite prevention portion that is configured to prevent the operating wire from biting into an inner surface of the second tube,
wherein in a state where a distal end of the pusher catheter protrudes from the channel of the endoscope, and the channel of the endoscope includes a curved portion that is in a curved state, the bite prevention portion is configured to be positioned proximal of a proximal end of the curved portion in the channel of the endoscope.

5 more elements

Dependencies are inferred from the claim text.

Stent delivery device

Life of this patent

Stent delivery device

Life of this patent

Abstract

Claims20