Stent delivery system, endoscope system, and stent indwelling method
AssigneeOlympus Corporation
InventorsMitsuru Kasama, Yoichi Sakurada
Life of this patent
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Abstract
The stent delivery system includes: an outer tube in which a first opening is formed in a distal end and a second opening is formed between the distal end and a proximal end; an inner tube inserted into the outer tube from the first opening to the second opening, and disposed outside of the outer tube from the second opening to the proximal end of the outer tube; and a stent stored between the inner tube and the outer tube. The outer tube and the inner tube are configured to be inserted into a channel of an endoscope. The second opening is formed at a position where the second opening is arranged inside the channel when a storage position is protruded from a distal end side of the channel.
Claims19
A stent delivery system comprising:
- an outer tube in which a first opening is formed in a distal end and a second opening is formed between the distal end and a proximal end;
- an inner tube inserted into the outer tube from the first opening to the second opening, and disposed outside of the outer tube from the second opening to the proximal end of the outer tube;
- and
- a stent stored in a storage position between the inner tube and the outer tube, wherein
- the outer tube and the inner tube are configured to be inserted into a channel of an endoscope,
- the second opening is formed at a position where the second opening is arranged inside the channel when the storage position is protruded from a distal end side of the channel.
An endoscope system comprising:
- a stent delivery system including an outer tube in which a first opening is formed in a distal end and a second opening is formed between the distal end and a proximal end;
- an inner tube inserted into the outer tube from the first opening to the second opening, and disposed outside of the outer tube from the second opening to the proximal end of the outer tube, and including a stent stored between the inner tube and the outer tube;
- and
- an endoscope having a channel into which the stent delivery system is insertable, wherein
- the second opening is formed at a position where the second opening is arranged inside the channel when a storage position is protruded from a distal end side of the channel.
A stent indwelling method using an endoscope and a stent delivery device, the method comprising:
- inserting the stent delivery system into a channel of the endoscope;
- inserting a distal end of the stent delivery system through the channel to an indwelling position of a stent;
- fixing an inner tube of the stent delivery system to the endoscope after arriving the distal end of the stent delivery system at the indwelling position;
- exposing the stent housed between the inner tube and an outer tube of the stent delivery system from the outer tube by pulling the outer tube toward a proximal side, the outer tube being provided in the stent delivery system so as to cover the inner tube, wherein
- in the outer tube, a first opening is formed in a distal end and a second opening is formed between the distal end and a proximal end,
- the inner tube is inserted into the outer tube from the first opening to the second opening and disposed outside of the outer tube from the second opening to the proximal end.
Dependencies are inferred from the claim text.