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Stent delivery system

A delivery system, front-end technology, applied in stents, medical science, prostheses, etc., can solve the problem that the start-up filling operation may not be easy to carry out

Active Publication Date: 2012-02-29
TERUMO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The stent delivery system is inserted into the living body after the priming operation of exchanging the internal air for liquid, but in the stent delivery systems of Patent Document 1 and Patent Document 2, the front side tube 2 and the stent housing are formed. It is not necessarily easy to start filling in the space between the cylindrical member 5, the sliding pipe 7 and the fixed pipe 8

Method used

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Examples

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Embodiment Construction

[0049] Next, the stent delivery system (body organ expansion device) of the present invention will be described using examples.

[0050] figure 1 It is a partly omitted external view of the stent delivery system according to the embodiment of the present invention. figure 2 yes figure 1 Enlarged exterior view of the front end of the stent delivery system. image 3 yes figure 1 An enlarged cross-sectional view of the front end of the stent delivery system. Figure 4 yes figure 2 A-A cutaway view. Figure 5 yes figure 2 The enlarged view of the B-B section. Figure 6 yes figure 2 C-C sectional enlarged view of . Figure 7 yes figure 2 D-D sectional enlarged view of . Figure 8 yes figure 2 E-E cut-away enlarged view. Figure 9 yes figure 1 An enlarged cross-sectional view of the vicinity of the base end of the stent receiving tubular member and the front end of the slide tube of the stent delivery system of . Figure 10 and Figure 11 It is an explanato...

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Abstract

A stent delivery system (1) comprises a tip-side tube (2), a base end-side tube (4), an affixed tube (8), a stent containing tubular member (5), a stent (3), and a pulling wire (6) which configures a movement means for moving the stent containing tubular member (5) to the base end side. The tip-side tube (2) comprises a tip-side priming slit (45) which is provided in a side wall in proximity to an engagement section (22) with which the base end of the stent is engaged, and also comprises a base end-side priming slit (46) which is provided in a side wall of the tip-side tube (2) on the base end side thereof. The slits (45, 46) are opened by pouring liquid with the tip opening (25a) or the rear end opening (23) of a guidewire lumen (21) of the tip-side tube (2) closed.

Description

technical field [0001] The present invention relates to a stent delivery system for indwelling a stent in a narrowed part or a closed part formed in a living body such as blood vessels, bile ducts, trachea, esophagus, urethra, digestive tract and other internal organs. Background technique [0002] In the past, it was proposed to indwell a stent in the stenosis or sealing part formed in the lumen or body cavity of a living body such as blood vessels, bile ducts, esophagus, trachea, urethra, digestive tract, and other internal organs to ensure the lumen or body cavity. Spatial stent delivery system. [0003] As the stent 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 has no expansion function. In order to indwell the stent at the target site, for example, after inserting the stent mounted on the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/84A61F2/89A61F2/95A61F2/966
CPCA61F2/89A61F2002/9665A61F2/95A61F2/9517
Inventor 原田金弥
Owner TERUMO KK