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balloon catheter

A balloon catheter and balloon technology, applied in the direction of balloon catheters, catheters, dissection instruments, etc., can solve the problems of damaged blood vessels and single cutting path, and achieve the effect of preventing excessive cutting and reducing excessive cutting tissue

Active Publication Date: 2022-06-21
LIFETECH SCI (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cutting path of the single guide wire cutting balloon is relatively simple and has been replaced by other devices. The multi-guide wire cutting balloon currently has ScoreflexNC high-pressure cutting balloon and Philips AngioSculpt RX PTCA integral cutting balloon on the market. These balloons are not loaded with drugs. , all of the above cutting balloons will cause excessive cutting and damage blood vessels

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] like Figure 1-2 As shown, Embodiment 1 of the present invention provides a balloon catheter 100 . The balloon catheter 100 includes a balloon body 101 and a plurality of cutting devices 11 located outside the balloon body 101 . The cutting devices 11 are located along the balloon body 101 . are arranged in the axial direction of the balloon body 101 and distributed at intervals along the circumference of the balloon body 101 .

[0059] like image 3 As shown, the balloon catheter 100 also includes a catheter body, the catheter body includes an outer tube 102 and an inner tube 13, the outer tube 102 is connected to the proximal end of the balloon body 101, the inner tube 13 is arranged in the inner cavity of the outer tube 102, and the inner tube 13 Passing through the balloon body 101 and passing through the distal end of the balloon body 101 , there is a gap between the outer tube 102 and the inner tube 13 , and filling or releasing the pressure in the gap can realiz...

Embodiment 2

[0078] The technical solution of this embodiment is basically the same as that of Embodiment 1, such as Figure 12-13 shown, combined with Figure 5 , the main difference lies in: the cross section of the middle section 113 of the support member 111 perpendicular to the axial direction of the balloon body 101 is trapezoidal, the section of the cutting member 112 perpendicular to the axial direction of the balloon body 101 is a figure-eight shape, and The cross section of the accommodating cavity 1120 perpendicular to the axial direction of the balloon body 101 is trapezoidal, the medicine is arranged in the accommodating cavity 1120 , and the top opening of the cutting member 112 serves as the opening 110 .

[0079] In this embodiment, the principle of the first cutting and the second cutting performed by the cutting member 112 is the same as that of the first embodiment, which will not be repeated in this embodiment, and the difference is that the cutting member 112 performs ...

Embodiment 3

[0081] The technical solution of this embodiment is basically the same as that of Embodiment 1, such as Figure 14-15 shown, combined with Figure 5 , the main difference is that: the cross section of the middle section 113 of the support member 111 perpendicular to the axial direction of the balloon body 101 is triangular, the section of the cutting member 112 perpendicular to the axial direction of the balloon body 101 is a figure-eight shape, and The cross section of the accommodating cavity 1120 perpendicular to the axial direction of the balloon body 101 is in the shape of an inverted funnel, and the top opening of the cutting member 112 serves as the opening 110 .

[0082] Specifically, continue to see Figure 15 , when the balloon body 101 is not expanded, the cutting member 112 is covered on the top end of the support member 111, the top end of the support member 111 is located in the accommodating cavity 1120 of the cutting member 112, and the accommodating cavity 11...

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Abstract

The present invention relates to the field of medical devices, in particular to providing a balloon catheter, which includes a balloon body, a cutting device and an elastic mesh bag. On the surface, the elastic net bag gradually expands with the expansion of the balloon body. When the balloon body expands to the elastic limit of the elastic net bag, the balloon body continues to expand, and the shape of the elastic net bag remains unchanged. When the cutting device cuts to a certain depth, the elastic effect of the elastic net bag reaches the limit and keeps the shape unchanged. At this time, the balloon body that continues to expand will form multiple protrusions under the restraint of the elastic net bag, and the cutting device is in the elastic net bag. The position remains unchanged under the action of the balloon body. When the balloon body continues to expand and the protrusion on the balloon body touches the inner wall of the blood vessel and pushes the blood vessel to expand outward, the cutting device withdraws from the embolism, reducing excessive cutting caused by over-expansion. To achieve the effect of preventing over-cutting.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a balloon catheter. Background technique [0002] Calcification and plaque long exist in peripheral and coronary vascular lesions, and drug balloons are usually used directly. In the case of severe calcification or multiple plaques, these foreign bodies become obstacles to drug delivery to the intima, and cutting balloons are often used at present. The calcification and plaque are incised at the stenotic lesion site, and then the drug balloon is used. This operation requires the use of 2 instruments and cannot guarantee the drug fit at the incision site, so that the drug dose at the plaque incision site is too small. The existing cutting balloons are divided into three types, one is a single-guide wire cutting balloon (a guide wire is set on the surface of the balloon, and the guide wire is used to cut calcifications and plaques after the balloon is inflated), and the other is an i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/3207A61B17/3209A61M25/10
CPCA61B17/3209A61B17/3207A61M25/10A61M25/0026A61M25/1002A61M25/10181A61B2017/320741A61M2025/105
Inventor 周振标龙汉
Owner LIFETECH SCI (SHENZHEN) CO LTD