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Stent Delivery System

A delivery system, cylindrical technology, applied in stents, medical science, prostheses, etc., can solve the problem of less wire winding, and achieve the effect of less rotation resistance, less increase, and good operability

Active Publication Date: 2011-12-07
TERUMO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the stent delivery system of this embodiment, the rotating roller for operation can only be set to rotate less than one turn, and the amount of wire winding that can be limited by the wire winding amount limiting mechanism is relatively small.

Method used

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Examples

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Embodiment Construction

[0053] The stent delivery system of the present invention will be described with examples.

[0054] The stent delivery system 1 of the present invention comprises: a tubular body having a guide wire lumen 21; a tubular member 5 for stent storage that covers the top side of the tubular body and can slide toward the proximal end of the tubular body; The stent 3 in the cylindrical member 5; one end is fixed to the pulling wire 6 (6a, 6b) of the cylindrical member 5 for holding the stent, and the pulling wire 6 (6a, 6b) is used to pull to the base end side of the tubular body. This pull wire 6 (6a, 6b) moves the cylindrical member 5 for stent accommodation to the proximal end side.

[0055] Specifically, the tubular body includes: a distal side tube 2 having a guide wire lumen; a proximal side tube 4 whose distal end is fixed to the proximal end of the distal side tube 2 , and a stent receiving cylindrical member 5 covering the distal side The distal side of the tube 2 is slidabl...

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Abstract

Disclosed is a stent delivery system. The stent delivery system (1) comprises: a tip-end tube (2); a base-end tube (4); a tubular member (5) which houses a stent (3); a traction wire (6) which has one end fixed to the tubular member; and an operation part (10) which has a traction wire winding mechanism and a wire winding-amount control mechanism for controlling the length of wire which is pulled. The operation part has a rotating roller (61) for operator control; a winding shaft part (63) and driving gear (12) which are provided coaxially and as a single piece with the roller; and a driven gear (40) which is intermittently rotated by the driving gear (12). The driving gear and the driven gear function as stoppers which stop the driving gear from rotating after the driving gear has rotated by a specific amount.

Description

technical field [0001] The present invention relates to a stent delivery system for indwelling a stent in a narrowed part or an occlusion formed in a living body such as blood vessels, bile ducts, trachea, esophagus, urethra, digestive tract, and other internal organs. Background technique [0002] A stent delivery system has been proposed in the past, which is used to indwell the stent in the narrowed or occluded part of the lumen or body cavity of the living body, such as blood vessels, bile ducts, esophagus, trachea, urethra, digestive tract, and other internal organs. To secure lumen or body cavity space. [0003] As stents constituting the above-mentioned stent delivery system, there are balloon-expandable stents and self-expandable stents depending on their functions and indwelling methods. [0004] The stent itself of the balloon-expandable stent does not have an expansion function. In order to indwell the stent at the target site, for example, after inserting the st...

Claims

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Application Information

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IPC IPC(8): A61F2/84A61F2/82A61F2/95A61F2/966
CPCA61F2/966A61F2002/9517A61F2/95A61F2/9517
Inventor 山下秀昭
Owner TERUMO KK
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