CN103751901A - Coronary artery interventional catheter with improved sustaining strength and method for manufacturing coronary artery interventional catheter - Google Patents

Abstract

The invention discloses a coronary artery interventional catheter with improved sustaining strength and a method for manufacturing the coronary artery interventional catheter. The coronary artery interventional catheter comprises a first main catheter and a second main catheter. The first main catheter is connected with the second main catheter by a bent tube; the inner walls of joint ends of the first main catheter, the second main catheter and the bent tube are of wedge-shaped structures; the bent tube is arc-shaped; the bending radian of the bent tube is adjustable. The first main catheter and the second main catheter are connected with the bent tube by means of high-frequency welding by the aid of molds, the bent tube are closely sleeved at the head ends of the two main catheters, the main catheters are communicated with each other via the bent tube, and accordingly the coronary artery interventional catheter has certain radian, brings convenience for implementing coronary artery interventional operation and provides powerful sustaining strength for delivering medical apparatus and instruments (such as guide wires, balloons and stents) in follow-up procedures. Compared with the prior art, the coronary artery interventional catheter and the method have the advantages that the coronary artery interventional catheter is simple in structure and is safe and reliable, and medical risks due to insufficient sustaining strength of an existing catheter can be prevented.

Description

Translated fromChinese

一种支持力加强的冠脉介入导管及其制造方法Coronary intervention catheter with enhanced supporting force and manufacturing method thereof

技术领域technical field

本发明涉及介入导管，属于医疗器械；尤其涉及一种支持力加强的冠脉介入导管及其制造方法。The invention relates to an interventional catheter, which belongs to medical equipment; in particular, it relates to a coronary interventional catheter with enhanced supporting force and a manufacturing method thereof.

背景技术Background technique

随着冠脉介入治疗手术的发展，对介入器材是呀的各种导管的要求也越来越高。用于输送各种医疗器械（如导丝、球囊和支架等）的导引导管的要求比较特殊，不仅要求导引导管要有足够支持力和足够的内管径，保证后续医疗器械的顺利输送以及手术的进行，还要求导管的外管径要尽可能小，减小导引导管对患者血管的创伤以及降低患者的不舒适度。导引导管的作用是输送各种介入治疗器械到达病变部位，受作用力与反作用力的影响，向前推送球囊、支架的力量使导引导管获得相反方向运动的趋势，特别是对于极度扭曲、钙化、成角和支架中再过支架的冠状动脉病变，这种反向作用趋势更强，这时需要导引导管提供大的支持力，才能保障介入手术的顺利进行。大的支持力保证导引导管不会因前向推送力的加大而反向退出冠状动脉开口。With the development of coronary interventional surgery, the requirements for interventional equipment and catheters are getting higher and higher. The requirements for guiding catheters used to transport various medical devices (such as guide wires, balloons, and stents, etc.) are relatively special, not only requiring that the guiding catheter have sufficient support and sufficient inner diameter to ensure the smooth operation of subsequent medical devices. For transportation and operation, it is also required that the outer diameter of the catheter should be as small as possible to reduce the trauma of the guide catheter to the patient's blood vessels and reduce the discomfort of the patient. The function of the guide catheter is to transport various interventional therapy instruments to the lesion site. Affected by the action force and reaction force, the force of pushing the balloon and stent forward makes the guide catheter move in the opposite direction, especially for extremely twisted , calcification, angulation, and coronary artery lesions with a stent in the stent, this reverse effect tends to be stronger. At this time, the guiding catheter is required to provide a large supporting force to ensure the smooth progress of the interventional operation. The large support force ensures that the guiding catheter will not reversely withdraw from the coronary artery opening due to the increase of forward pushing force.

发明内容Contents of the invention

本发明的目的在于克服现有技术的缺点和不足，提供一种结构简单、适用范围广的支持力加强的冠脉介入导管及其制造方法，其工艺简单，安全性高。The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a coronary interventional catheter with a simple structure and a wide application range and a strong supporting force and a manufacturing method thereof, which has a simple process and high safety.

本发明通过下述技术方案实现：The present invention realizes through following technical scheme:

一种支持力加强的冠脉介入导管，包括第一主导管1、第二主导管3，第一主导管1和第二主导管3通过弯管2连接。所述弯管2为圆弧形弯管，所述圆弧形弯管为弹性圆弧形弯管；所述弯管2的弯曲弧度可调，经弯曲变形后可恢复原形。所述第一主导管1和第二主导管3与弯管2连接端的内壁呈楔形结构。弯管2比主导管1和第二主导管3的硬度大，韧性强。该弯管2的内径与主导管1和第二主导管3的外径相等。A coronary intervention catheter with enhanced supporting force includes a firstmain catheter 1 and a secondmain catheter 3 , and the firstmain catheter 1 and the secondmain catheter 3 are connected by an elbow 2 . The elbow 2 is an arc-shaped elbow, and the arc-shaped elbow is an elastic arc-shaped elbow; the bending arc of the elbow 2 is adjustable, and the original shape can be restored after being bent and deformed. The inner walls of the connecting ends of the firstmain conduit 1 and the secondmain conduit 3 and the elbow 2 are wedge-shaped. The bent pipe 2 is harder and tougher than theprimary conduit 1 and the secondprimary conduit 3 . The inner diameter of the bent pipe 2 is equal to the outer diameters of themain conduit 1 and the secondprimary conduit 3 .

上述的支持力加强的冠脉介入导管的制造方法，包括如下步骤：The manufacturing method of the above-mentioned coronary interventional catheter with enhanced supporting force comprises the following steps:

（1）通过模具采用高分子复合材料制造出弯管2；(1) Manufacture the elbow 2 by using a polymer composite material through a mold;

（2）再分别将第一主导管1和第二主导管3与弯管2连接端的内壁进行楔形过渡处理；(2) Carry out wedge-shaped transition treatment on the inner walls of the connecting ends of the firstmain conduit 1 and the secondmain conduit 3 and the elbow 2 respectively;

（3）将步骤（2）处理的第一主导管1和第二主导管3经过楔形过渡处理的端部，插入弯管2的两端后，再经过高频模具紧密焊接在一起，得到冠脉介入导管的毛坯；(3) After inserting the ends of the firstmain conduit 1 and the secondmain conduit 3 processed in step (2) after wedge-shaped transition treatment into the two ends of the elbow 2, they are tightly welded together by a high-frequency mold to obtain a crown Blanks for intravascular catheters;

（4）对冠脉介入导管的毛坯进行光滑处理，得到支持力加强的冠脉介入导管。(4) Smoothing the blank of the coronary interventional catheter to obtain a coronary interventional catheter with enhanced support.

本发明与现有的技术相比具有以下优点：Compared with the prior art, the present invention has the following advantages:

弯管2的弯曲弧度可调，可满足不同患者的手术治疗，具有通用性。避免了因导管支持力不足带来的医疗风险。The bending arc of the elbow 2 is adjustable, which can meet the surgical treatment of different patients and has versatility. The medical risk caused by insufficient catheter support is avoided.

实际应用中，第一主导管1和第二主导管3需要一定的弯曲弧度，第一主导管1和第二主导管3的连接处采用弯管2可以使加工工艺更简单，更易生产。In practical applications, the firstprimary conduit 1 and the secondprimary conduit 3 require a certain curvature, and the use of the elbow 2 at the junction of the firstprimary conduit 1 and the secondprimary conduit 3 can simplify the processing technology and facilitate production.

采用上述结构的冠脉介入导管，因为弯管2在弯曲段，既不影响主导管1和第二主导管3的其他性能，其支持力又大于现有导管，且不会增加患者的不舒适。The coronary intervention catheter with the above structure, because the elbow 2 is in the curved section, does not affect other performances of themain catheter 1 and the secondmain catheter 3, and its supporting force is greater than that of the existing catheter, and does not increase the discomfort of the patient .

本专利工艺结构简单，其工艺简单，安全性高、适用范围广。The patented process has simple structure, simple process, high safety and wide application range.

附图说明Description of drawings

图1为本发明支持力加强的冠脉介入导引导管整体结构示意图。Fig. 1 is a schematic diagram of the overall structure of the catheter for coronary intervention with enhanced supporting force of the present invention.

图2为图1局部剖面放大示意图。FIG. 2 is an enlarged schematic diagram of a partial section in FIG. 1 .

具体实施方式Detailed ways

下面结合具体实施例对本发明作进一步具体详细描述。The present invention will be described in further detail below in conjunction with specific embodiments.

实施例Example

如图1、2所示。本发明支持力加强的冠脉介入导管，包括第一主导管1、第二主导管3；第一主导管1较长，实际应用中经皮穿刺后能沿动脉轴向伸入到心脏近端大动脉；第二主导管3，该导管较短，实际应用中沿动脉径向伸入到冠脉口；主导管1和第二主导管3通过弯管2连接。所述第一主导管1和第二主导管3与弯管2连接端的内壁呈楔形结构。弯管2比主导管1和第二主导管3的硬度大，韧性强。As shown in Figure 1 and 2. The coronary interventional catheter with enhanced supporting force of the present invention includes a firstmain catheter 1 and a secondmain catheter 3; the firstmain catheter 1 is relatively long, and can extend into the proximal end of the heart along the axis of the artery after percutaneous puncture in practical applications The aorta; the secondmain catheter 3 , which is relatively short, and extends radially along the artery to the coronary ostium in practical applications; themain catheter 1 and the secondmain catheter 3 are connected by an elbow 2 . The inner walls of the connecting ends of the firstmain conduit 1 and the secondmain conduit 3 and the elbow 2 are wedge-shaped. The bent pipe 2 is harder and tougher than theprimary conduit 1 and the secondprimary conduit 3 .

所述弯管2为圆弧形弯管。所述圆弧形弯管为弹性圆弧形弯管。经弯曲变形后恢复原形。The elbow 2 is an arc-shaped elbow. The arc-shaped elbow is an elastic arc-shaped elbow. Returns to its original shape after being bent and deformed.

所述弯管2的内径与主导管1和第二主导管3的外径相等。The inner diameter of the bend pipe 2 is equal to the outer diameters of theprimary conduit 1 and the secondprimary conduit 3 .

上述的支持力加强的冠脉介入导管的制造方法，可通过下述步骤实现：The manufacturing method of the above-mentioned coronary interventional catheter with enhanced supporting force can be realized through the following steps:

（1）通过模具采用高分子复合材料制造出弯管2；(1) Manufacture the elbow 2 by using a polymer composite material through a mold;

（2）再分别将第一主导管1和第二主导管3与弯管2连接端的内壁进行楔形过渡处理；楔形过渡处理，有利于避免将来手术过程阻碍物质输送；(2) Carry out wedge-shaped transition treatment on the inner walls of the connecting ends of the firstmain catheter 1 and the secondmain catheter 3 and the elbow 2 respectively; the wedge-shaped transition treatment is beneficial to avoid hindering material delivery during future operations;

（3）将步骤（2）处理的第一主导管1和第二主导管3经过楔形过渡处理的端部，插入弯管2的两端后，再经过高频模具紧密焊接在一起，得到冠脉介入导管的毛坯；(3) After inserting the ends of the firstmain conduit 1 and the secondmain conduit 3 processed in step (2) after wedge-shaped transition treatment into the two ends of the elbow 2, they are tightly welded together by a high-frequency mold to obtain a crown Blanks for intravascular catheters;

（4）对冠脉介入导管的毛坯进行光滑处理，得到支持力加强的冠脉介入导管。(4) Smoothing the blank of the coronary interventional catheter to obtain a coronary interventional catheter with enhanced support.

如上所述便可较好的实现本发明。The present invention can be preferably carried out as described above.

本发明的实施方式并不受上述实施例的限制，其他任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化，均应为等效的置换方式，都包含在本发明的保护范围之内。The implementation of the present invention is not limited by the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be equivalent replacement methods, and are all included in within the protection scope of the present invention.

Claims (6)

Translated fromChinese

1.一种支持力加强的冠脉介入导管，其特征在于：包括第一主导管、第二主导管；第一主导管和第二主导管通过弯管连接。1. A catheter for coronary intervention with enhanced supporting force, characterized in that: it includes a first main catheter and a second main catheter; the first main catheter and the second main catheter are connected by an elbow.2.根据权利要求1所述的支持力加强的冠脉介入导管，其特征在于：所述第一主导管和第二主导管与弯管连接端的内壁呈楔形结构。2 . The coronary intervention catheter with enhanced supporting force according to claim 1 , characterized in that: the inner walls of the connecting ends of the first main catheter and the second main catheter and the elbow are wedge-shaped. 3 .3.根据权利要求1所述的支持力加强的冠脉介入导管，其特征在于：所述弯管为圆弧形弯管；所述弯管的弯曲弧度可调。3 . The coronary interventional catheter with enhanced supporting force according to claim 1 , wherein the elbow is an arc-shaped elbow, and the curvature of the elbow is adjustable. 4 .4.根据权利要求1所述的支持力加强的冠脉介入导管，其特征在于：所述圆弧形弯管为弹性圆弧形弯管。4. The coronary interventional catheter with enhanced supporting force according to claim 1, characterized in that: the arc-shaped elbow is an elastic arc-shaped elbow.5.根据权利要求1所述的支持力加强的冠脉介入导管，其特征在于：所述弯管的内径与主导管和第二主导管的外径相等。5. The catheter for coronary intervention with enhanced supporting force according to claim 1, characterized in that: the inner diameter of the elbow is equal to the outer diameter of the main catheter and the second main catheter.6.根据权利要求1至5任一项所述的支持力加强的冠脉介入导管制造方法，其特征在于包括如下步骤：6. The coronary interventional catheter manufacturing method with enhanced supporting force according to any one of claims 1 to 5, characterized in that it comprises the following steps:（1）通过模具采用高分子复合材料制造出弯管；(1) Manufacture the bend pipe with polymer composite material through the mold;（2）再分别将第一主导管和第二主导管与弯管连接端的内壁进行楔形过渡处理；(2) Carry out wedge-shaped transition treatment on the inner wall of the connecting end of the first main conduit and the second main conduit and the elbow respectively;（3）将步骤（2）处理的第一主导管和第二主导管经过楔形过渡处理的端部，插入弯管的两端后，再经过高频模具紧密焊接在一起，得到冠脉介入导管的毛坯；(3) Insert the ends of the first main catheter and the second main catheter processed in step (2) through the wedge-shaped transition treatment into the two ends of the elbow, and then tightly weld them together through a high-frequency mold to obtain a coronary intervention catheter rough;（4）对冠脉介入导管的毛坯进行光滑处理，得到支持力加强的冠脉介入导管。(4) Smoothing the blank of the coronary interventional catheter to obtain a coronary interventional catheter with enhanced support.

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