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Controlled expansion balloon catheter

A technology of a balloon catheter and a protector, which is applied in the field of balloon catheters, can solve the problems such as the inability of medicines to pass through and the embolism of blood vessels.

Active Publication Date: 2010-08-18
INVATEC TECH CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Finally, the described split or ruptured sheaths have the disadvantage that part of the vessel wall is covered by the remaining part of the sheath and that medicaments cannot pass through, and as in the case of US 2002 / 0151 844, sheath fragments can lead to Vascular embolism

Method used

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  • Controlled expansion balloon catheter
  • Controlled expansion balloon catheter

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0079] The collapsed balloon (4.0 x 40 mm) of the balloon catheter coated with 7 μg methotrexate / mm was helically wrapped with a PTFE tape 10 μm thick and 200 μm wide such that the distance between the turns of the tape The spacing is 3mm. The straps are fixedly attached to the catheter proximally and distally of the balloon. The bands make the increase in diameter of the collapsed balloon impossible to measure. When the balloon is inflated in a narrowed vessel, the band tears at any point without the end losing contact with the catheter shaft. The balloon is removed from the treated vessel along with the catheter at the end of the treatment.

Embodiment 3

[0081] The drug-coated balloon catheter (5mm balloon diameter, 120mm balloon length) will be introduced into the PTFE tube (outer diameter 1.6mm, inner diameter 1.3mm) in a collapsed state, so that the balloon catheter has a catheter tip and a catheter The end of the opening of the rod's central channel (for receiving the guide wire later) just protrudes from the PTFE tubing, while the active substance-coated balloon is placed completely within the lumen of the PTFE tubing. 4 μl of X-ray contrast solvent Ultravist 370 (Bayer Schering Pharma AG, Berlin) corresponding to 0.77 g iopromide / ml was inserted into the wall between the PTFE hose wall and the catheter tip from the far side with an injection needle in the inner cavity. The tubing was left at 30° C. for 24 hours, after which there was a plug of solid radiographic solvent at the distal end of the tubing that tightly closed an approximately 3 mm section of the PTFE tubing. The system is sterilized with ethylene oxide in th...

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PUM

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Abstract

The invention relates to a drug-coated balloon catheter which has a catheter balloon mounted on its distal end and an expansion protection surrounding the same. The invention is characterized in that the catheter balloon is protected from premature expansion even under strong mechanical stress and in that the catheter balloon folds back more easily after dilation.

Description

technical field [0001] The invention relates to an active substance-coated balloon catheter with a distally mounted balloon catheter and an expansion protection surrounding the balloon catheter, wherein the catheter balloon is on the one hand even in strong It is also protected from premature deployment under mechanical loading and on the other hand the catheter balloon can have a better collapse after subsequent inflation. [0002] Catheters are hoses or other conductive elongated objects of various lengths, with grippers and / or connectors on the proximal side, used to connect different instruments, extensions, or containers, and either open or closed on the distal side , without or with components of different functions. Catheters are used to exert different interventions and functions on the body. A very advantageous form of catheter comprises a balloon in the distal region. The balloon is usually delivered to a defined location in a stowed or deflated state. The balloo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/84A61F2/958
CPCA61M2025/1081A61M2025/105A61F2/958A61F2250/0067A61M25/10
Inventor 布鲁诺·舍勒乌尔里希·斯佩克
Owner INVATEC TECH CENT