阅读说明：本技术 一种介入治疗用多功能导管 (Multifunctional catheter for interventional therapy ) 是由 刘奕彤 于 2019-10-25 设计创作，主要内容包括：本发明公开了一种介入治疗用多功能导管,包括灌注接头、线缆、若干腔道、球囊、传感器、远端侧孔和超声波换能器。在使用时腔道通入药物,药物撑开球囊,同时球囊贴合血管内壁,如此实现定向灌注；从专有的腔道定向给药避免了传统药物球囊在血管中输送过程的药物损失和药物接触病变表面的难题；至于振荡单元,利用超声波激发药物运动使其更加深入,从而实现深层给药。从整体上看,治疗效果更好。此发明用于介入治疗技术领域。(The invention discloses a multifunctional catheter for interventional therapy, which comprises a perfusion connector, a cable, a plurality of cavities, a balloon, a sensor, a far-end side hole and an ultrasonic transducer. When in use, the cavity is filled with the medicine, the medicine props up the saccule, and the saccule is attached to the inner wall of the blood vessel, so that the directional perfusion is realized; the directional administration from a special cavity avoids the problems of drug loss and drug contact with the surface of lesion in the process of delivering the traditional drug balloon in the blood vessel; as for the oscillating unit, the medicine is excited to move deeper by ultrasonic waves, so that deep administration is realized. The treatment effect is better on the whole. The invention is used in the technical field of interventional therapy.)

1. A multifunctional catheter for interventional therapy is characterized in that: comprises that

A catheter body having at least three spaced apart lumens therein;

the balloon is positioned on the catheter main body and made of a semipermeable membrane material, and the inner side of the balloon is communicated with one cavity channel of the catheter main body;

and the oscillation unit vibrates or deforms after acquiring external energy, is arranged in the balloon, and is arranged in another cavity of the catheter main body through a cable.

2. The multifunctional catheter for interventional therapy according to claim 1, characterized in that: the side wall of the catheter body is provided with a notch to define a distal side hole from the side, and the distal side hole is communicated with one cavity channel of the catheter body.

3. The multifunctional catheter for interventional therapy according to claim 2, characterized in that: the tail end of the catheter main body is provided with two perfusion connectors which are respectively communicated with two cavity channels corresponding to the saccule and the far-end side hole.

4. The multifunctional catheter for interventional therapy according to claim 3, characterized in that: the far-end side hole is a bevel cut hole.

5. The multifunctional catheter for interventional therapy according to claim 1 or 2, characterized in that: the front end of the catheter body is provided with a sensor, and a cable of the sensor is arranged in one cavity channel of the catheter body.

6. The multifunctional catheter for interventional therapy according to claim 5, characterized in that: the sensor is a pressure sensor or an optical fiber sensor.

7. The multifunctional catheter for interventional therapy according to claim 1, characterized in that: the surface of the sacculus is provided with a plurality of punctiform micropores.

8. The multifunctional catheter for interventional therapy according to claim 1 or 7, characterized in that: the surface of the sacculus is provided with a groove extending along the length direction of the catheter main body.

9. The multifunctional catheter for interventional therapy according to claim 1, characterized in that: the oscillation unit is an ultrasonic transducer.

10. The multifunctional catheter for interventional therapy according to claim 9, characterized in that: the ultrasonic transducers are uniformly distributed around the catheter main body.

Technical Field

The invention relates to the technical field of interventional therapy, in particular to a multifunctional catheter for interventional therapy.

Background

Cardiovascular diseases have gradually become the biggest threat to human health, with high morbidity and mortality rates. At present, cardiovascular intervention treatment is an important treatment means for vascular stenosis. Nico Pijls et al, 1993, proposed a Fractional Flow Reserve (FFR) index, which is to determine the blood Flow by measuring the pressure ratio between the proximal side and the distal side of a stenotic vascular site, and then determine the treatment regimen. At present, the pressure measurement guide wire is clinically used for measurement, a pressure sensor is arranged at the far end of the guide wire and used for detecting the blood pressure value at the far end of the guide wire, and the blood flow condition in the blood vessel is judged according to the calculated FFR value. The current pressure measurement seal wire precision and stability are influenced by the bending deformation of seal wire greatly and the sensor base is fixed at the seal wire head end, and this can influence the original head end hardness and compliance of seal wire head end, and then influence the ability that the seal wire passes through pathological change.

Meanwhile, the incidence of restenosis is serious after the stent is implanted, 5% -60% of patients can suffer from short-term and medium-term restenosis, the occurrence of the drug balloon relieves the restenosis problem to a certain extent, but the drug balloon can rub the vessel wall in the process of conveying the drug balloon to the restenosis lesion in the blood vessel, and simultaneously, a large amount of drug is lost under the condition of blood flow flushing, after the drug balloon is conveyed to the lesion, the drug on the surface of the balloon only contacts with the inner surface of the stenosis lesion, and cannot permeate the drug to the deep part of endothelium, so that the treatment effect is greatly reduced.

Disclosure of Invention

The invention aims to provide a multifunctional catheter for interventional therapy, which realizes directional perfusion and directional deep administration on stenotic lesions.

The technical scheme adopted by the invention is as follows:

a multifunctional catheter for interventional therapy comprises a catheter main body, a catheter core and a catheter core, wherein the catheter main body is internally provided with at least three cavities which are separated from each other; the balloon is positioned on the catheter main body and made of a semipermeable membrane material, and the inner side of the balloon is communicated with one cavity channel of the catheter main body; and the oscillation unit is arranged in the balloon and vibrates or deforms after acquiring external energy, and a cable of the oscillation unit is arranged in the other cavity channel of the catheter main body.

The cavity has two kinds of formation modes, firstly, be equipped with a plurality of baffles in the pipe main part, inject a plurality of cavitys between two adjacent baffles and between baffle and the pipe main part. And secondly, a plurality of small pipelines are wrapped in the catheter main body, and each small pipeline is used as a cavity channel. The catheter body needs to maintain a suitable amount of strength to stably surround the lumen.

Has the advantages that: when in use, the cavity is filled with the medicine, the medicine props up the saccule, and the saccule is attached to the inner wall of the blood vessel, so that the directional perfusion is realized; the directional administration from a special cavity avoids the problems of drug loss and drug contact with the surface of lesion in the process of delivering the traditional drug balloon in the blood vessel; as for the oscillating unit, the medicine is excited to move deeper by ultrasonic waves, so that deep administration is realized. The treatment effect is better on the whole.

As a modification of the above, the side wall of the catheter body has a notch defining laterally a distal side aperture communicating with one of the lumens of the catheter body. The distal side hole is mainly used for thrombus suction and local radiography, and belongs to the function of expanding the catheter main body.

As an improvement of the scheme, the tail end of the catheter main body is provided with two perfusion connectors which are respectively communicated with two cavities corresponding to the saccule and the far-end side hole.

As an improvement of the scheme, the distal side hole is a chamfered hole, namely a structure with a wide opening and a narrow inner side, is similar to a chamfer, and is more convenient for sucking and injecting contrast medium.

As a modification of the above solution, the front end of the catheter body is provided with a sensor, and a cable of the sensor is arranged in one of the channels of the catheter body. The sensor can realize the monitoring of the pressure in the blood vessel and the evaluation of the stenosis grade, and provides a basis for medical staff to judge the state of an illness. The design belongs to the function of expanding the catheter main body.

As an improvement of the scheme, the sensor is a pressure sensor or an optical fiber sensor. The sensor is mounted in a channel of the catheter body by the base, and the cable of the sensor is placed in the same channel and extends therefrom.

As an improvement of the scheme, a plurality of punctiform micropores are arranged on the surface of the saccule and are manufactured by laser or machining. The micropores facilitate the temporary storage of the drug.

As a modification of the above, the surface of the balloon is provided with grooves extending in the length direction of the catheter main body. The design keeps the blood flow channel and prevents the saccule from obstructing the blood flow for a long time. The balloon here may already be different from the cylindrical or spherical-like balloons described above, and may be counted as a profiled balloon. The micro-holes are not provided on the grooves.

In the machine according to the above aspect, the oscillation unit is an ultrasonic transducer. Ultrasonic transducers currently achieve high frequency vibration, but it is also possible to later develop a material or structure that can transmit high frequency vibrations, such as by introducing vibrations at the input end of the structure, which then vibrate correspondingly at the output end of the structure.

As an improvement of the scheme, the material of the ultrasonic transducer is piezoelectric ceramic or magnetostrictive material.

As an improvement of the scheme, the ultrasonic transducer is annular and surrounds the catheter body as much as possible, and when the ultrasonic transducer vibrates, the medicines around the balloon are excited simultaneously. If the ultrasound transducers are elongate they may be arranged in a circular array, with the ultrasound transducers of each array being along the length of the catheter body.

Drawings

The invention will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic illustration of a cross-section of a multifunctional catheter;

FIG. 2 is an enlarged view of the position of the balloon in the first embodiment, the balloon resembling a cylindrical surface;

FIG. 3 is an enlarged view of the position of the balloon in the second embodiment, the surface of the balloon being provided with micropores;

FIG. 4 is an enlarged view of the position of the balloon in a third embodiment, the balloon being profiled;

FIG. 5 is an enlarged view of the position of the balloon in a fourth embodiment, the surface of the balloon being provided with micropores;

FIG. 6 is a schematic view of a balloon in combination with an ultrasonic transducer;

FIG. 7 is a schematic view of a distal side port on a catheter body;

FIG. 8 is a schematic view of a sensor installation;

FIG. 9 is a schematic view of the entire multifunction catheter in the first embodiment;

FIG. 10 is a schematic view of the entire multifunction catheter in the second embodiment;

FIG. 11 is a schematic view of the entire multifunction catheter in the third embodiment;

fig. 12 is a schematic view of the entire multifunction catheter in the fourth embodiment.

1: one of the perfusion connectors; 2: filling a second connector; 3: one of the cables; 4: a second cable; 5: one of the lumens; 6: a second cavity; 7: a balloon; 8: a sensor; 9: a distal side hole; 10: a third cavity; 11: micropores; 12: a groove; 13: an ultrasonic transducer; 14: a base.

Detailed Description

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as up, down, front, rear, left, right, etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of the description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the invention, the meaning of a plurality of the terms is one or more, the meaning of a plurality of the terms is two or more, and the terms larger, smaller, larger, etc. are understood to include no essential numbers, and the terms larger, smaller, etc. are understood to include essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the invention, unless otherwise explicitly defined, terms such as set, mounted, connected and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the terms in the invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 12, the present invention is a multifunctional catheter for interventional therapy.