阅读说明：本技术 一种集成可控圆周超声扫描及转向功能的导管 (Catheter integrating controllable circumferential ultrasonic scanning and steering functions ) 是由 陈松林 刘云奇 杨习锋 曾晨光 周启明 丁雪玲 于 2020-05-28 设计创作，主要内容包括：本发明提供了一种集成可控圆周超声扫描及转向功能的导管,包括导向管体、基座转盘、超声换能器以及转向组件,所述基座转盘包括圆盘和设于所述圆盘侧围的多个推动杆,所述转向组件包括多个电致弯曲柱、转盘固定基座以及电压调节器。上述一种集成可控圆周超声扫描及转向功能的导管,使用时,通过超声换能器,实现探测功能,通过转向组件中的电压调节器使得多个电致弯曲柱朝同一个方向弯曲,进而推动推动杆转动,使得圆盘上的超声换能器转动,实现超声换能器进行圆周扫描作用的效果,当电致弯曲柱进一步弯曲时,则会带动导向管体弯曲,实现转向功能,无需通过机械传动调节方式使导向管体转动或弯曲,避免了损伤血管。(The invention provides a catheter integrating controllable circumferential ultrasonic scanning and steering functions, which comprises a guide catheter body, a base turntable, an ultrasonic transducer and a steering assembly, wherein the base turntable comprises a disc and a plurality of push rods arranged on the side wall of the disc, and the steering assembly comprises a plurality of electric induced bending columns, a turntable fixing base and a voltage regulator. Above-mentioned pipe of integrated controllable circumference ultrasonic scanning and turning to function, during the use, through ultrasonic transducer, realize surveying the function, make a plurality of electric curved posts towards same direction bending through the voltage regulator that turns to in the subassembly, and then promote the catch bar and rotate, make ultrasonic transducer on the disc rotate, realize that ultrasonic transducer carries out the effect of circumference scanning effect, when electric curved post is further crooked, then can drive the direction body and bend, realize turning to the function, need not to make the direction body rotate or crooked through mechanical transmission regulation mode, the damage blood vessel has been avoided.)

1. The utility model provides an integrated controllable circumference ultrasonic scanning and turn to pipe of function, its characterized in that, including the direction body, be equipped with the terminal base carousel of direction body, locate the terminal ultrasonic transducer of base carousel, and with the subassembly that turns to that the base carousel is connected, the base carousel includes the disc and locates a plurality of catch bars of disc side wall, turn to the subassembly and include a plurality of electro-bending posts, with each the carousel fixed baseplate that the electro-bending post is connected, and with each the voltage regulator that the electro-bending post is connected, the end of electro-bending post extends to adjacent two respectively between the catch bar.

2. The catheter of claim 1, wherein the steering assembly comprises a plurality of balloons disposed outside the guiding tube and a suction and deflation device connected to the plurality of balloons.

3. The catheter of claim 2, wherein the guiding tube body comprises a flexible portion and a supporting portion connected to the flexible portion, the end of the electro-bending column extends to the orifice of the flexible portion, and the voltage regulator is disposed outside the supporting portion.

4. The catheter of claim 3, wherein a plurality of balloons are uniformly spaced outside the flexible portion.

5. The catheter integrating controllable circumferential ultrasound scanning and steering functions as claimed in claim 1, wherein the supporting portion is provided with a gripping portion at its periphery.

6. The catheter of claim 5, wherein the handle comprises one of a handle knob or a handle grip.

7. The catheter of claim 1, wherein the steering assembly further comprises a current direction regulator connected to the electro-curved post.

8. The catheter integrating controllable circumferential ultrasound scanning and steering functions of claim 1, wherein the electroflex column is an ion-exchange polymeric metal.

9. The catheter of claim 1, wherein the end of the guiding tube body is provided with a sealing cover plate.

Technical Field

The invention relates to the technical field of medical equipment, in particular to a catheter integrating controllable circumferential ultrasonic scanning and steering functions.

Background

In recent years, interventional vascular surgery has been rapidly developed as an effective means for treating cardiovascular and cerebrovascular diseases. Although it has the advantages of short operation time, fast recovery process and the like, in the operation process, the operation personnel are affected by the radiation irradiation for a long time, the training time of the operation personnel is correspondingly increased due to strong skill demand, the operation time is closely related to the convenience of instruments (such as catheters), the radiation time of patients and operators is further affected, and the factors restrict the further development of the interventional vascular surgery.

Intravascular ultrasound refers to a medical imaging technique that combines a non-invasive ultrasound technique with an invasive catheter technique, using a special catheter with an ultrasound probe connected to the end. The intravascular ultrasound is to place a miniaturized ultrasonic transducer into a cardiovascular cavity through a cardiac catheter to display the cardiovascular section morphology and/or blood flow graph, and mainly comprises two aspects of an ultrasonic imaging technology and Doppler blood flow measurement. In intravascular ultrasound procedures, which rely on guidance of a guidewire to reach a lesion site, two problems exist: 1. the ultrasonic function of the catheter cannot be exerted in the process of searching the lesion position by the guide wire, and the guide wire can possibly enter a false cavity area; 2. the guide wire achieves the purpose of turning by shaking the tip of the guide wire through blood fluctuation in the blood vessel, and the efficiency is low.

At present, most of interventional catheters are turned by bending an ultrasonic catheter towards a certain direction in a mechanical transmission adjusting mode, if the turning direction needs to be adjusted, the ultrasonic catheter needs to be mechanically rotated and tested in a blood vessel, the control direction is limited, the turning angle is not flexible enough, and the blood vessel is easily damaged in the process and complications are caused.

Disclosure of Invention

The invention aims to provide a catheter integrating controllable circumferential ultrasonic scanning and steering functions, and aims to solve the problems that the conventional intravascular ultrasonic catheter is not flexible in turning angle, is easy to damage blood vessels and causes complications.

The invention provides a catheter integrating controllable circumferential ultrasonic scanning and steering functions, which comprises a guide pipe body, a base turntable provided with the tail end of the guide pipe body, an ultrasonic transducer arranged at the tail end of the base turntable, and a steering assembly connected with the base turntable, wherein the base turntable comprises a disc and a plurality of push rods arranged on the side wall of the disc, the steering assembly comprises a plurality of electric bending columns, a turntable fixing base connected with each electric bending column, and a voltage regulator connected with each electric bending column, and the tail ends of the electric bending columns respectively extend to the space between two adjacent push rods.

Above-mentioned pipe of integrated controllable circumference ultrasonic scanning and turning to function, during the use, through ultrasonic transducer, realize surveying the function, make a plurality of electric curved posts towards same direction bending through the voltage regulator that turns to in the subassembly, and then promote the catch bar and rotate, make ultrasonic transducer on the disc rotate, realize that ultrasonic transducer carries out the effect of circumference scanning effect, when electric curved post is further crooked, then can drive the direction body and curve, the realization turns to the function, need not to make direction body 10 rotate or crooked through mechanical transmission regulation mode, the damage blood vessel has been avoided.

Further, the steering assembly comprises a plurality of balloons arranged on the outer side of the guide pipe body and an air exhaust and deflation device connected with the balloons.

Further, the guide pipe body includes flexible portion and with the supporting part that the flexible portion is connected, the end of electroflex post extends to the mouth of pipe department of flexible portion, voltage regulator locates the outside of supporting part.

Further, a plurality of sacculus evenly spaced locates the outside of flexible portion.

Further, a holding part is arranged on the periphery of the supporting part.

Further, the holding part includes any one of a holding projection or a handle grip.

Further, the steering assembly also includes a current direction regulator connected to the electro-flex column.

Further, the electroflex column is an ion-exchange polymeric metal.

Furthermore, the tail end of the guide pipe body is provided with a sealing cover plate.

Drawings

FIG. 1 is a schematic perspective view of a catheter with integrated controllable circumferential ultrasound scanning and steering functions according to a first embodiment of the present invention;

FIG. 2 is an enlarged schematic view of a steering assembly in the catheter of FIG. 1 incorporating controllable circumferential ultrasound scanning and steering functionality;

FIG. 3 is a side view of the catheter of FIG. 1 incorporating controllable circumferential ultrasound scanning and steering functionality;

FIG. 4 is a perspective view of a catheter with integrated controllable circumferential ultrasound scanning and steering functionality according to a second embodiment of the present invention;

fig. 5 is a schematic side view of a catheter with integrated controllable circumferential ultrasound scanning and steering functions according to a third embodiment of the present invention.

Description of the main element symbols:

guide tube body	10	Disc with a circular groove	21	Electrocurved column	41
						Flexible part	11	Push rod	22	Rotary table fixing base	42
Supporting part	12	Ultrasonic transducer	30	Handle part	50
						Base turntable	20	Steering assembly	40	Balloon	60

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, a catheter integrating controllable circumferential ultrasound scanning and steering functions according to a first embodiment of the present invention includes a guiding tube 10, a base turntable 20 disposed at an end of the guiding tube 10, an ultrasound transducer 30 disposed at an end of the base turntable 20, and a steering assembly 40 connected to the base turntable 20, where the base turntable 20 includes a disk 21 and a plurality of pushing rods 22 disposed at a side of the disk 21, the steering assembly 40 includes four electric bending columns 41, a turntable fixing base 42 connected to each electric bending column 41, and a voltage regulator (not shown) connected to each electric bending column 42, and ends of the electric bending columns 42 respectively extend to between two adjacent pushing rods 22.

The utility model provides an integrated controllable circumference ultrasonic scanning and pipe that turns to function, in using, through ultrasonic transducer 30, realize surveying the function, make a plurality of electric induced bending post 41 crooked towards same direction through turning to the voltage regulator among the subassembly 40, and then promote the catch bar 22 and rotate, make ultrasonic transducer 30 on the disc 21 rotate, realize that ultrasonic transducer 30 carries out the effect of circumference scanning effect, when electric induced bending post 41 further bends, then can drive the bending of direction body 10, realize turning to the function, need not to make direction body 10 rotate or crooked through mechanical transmission regulative mode, the damage blood vessel has been avoided. Meanwhile, the ultrasonic imaging technology and the electro-deformation material technology are combined, the lesion position can be reached without the help of a guide wire, the entry into a false cavity is avoided, the efficiency is high, and the X-ray irradiation time of a patient is shortened.

Specifically, in the embodiment of the present invention, the electrostrictive column 41 is an ion-exchange polymer metal, such as IPMC (ion-exchange polymer metal composite), i.e., an artificial muscle. It should be noted that, when in use, electrodes (such as graphene film electrodes) which are tightly combined can be prepared on four surfaces of the electric induced bending column 41 by spraying or deposition, and the like, two corresponding electrodes are grouped in pairs, and by adjusting the external voltage positive and negative directions or the voltage magnitude of two corresponding electrodes of the electric induced bending column 41 in the array, turning of the electric induced bending column 41 in four directions in a two-dimensional plane can be controlled, the turning angle can be controlled, and the effect of circumferential scanning action of the ultrasonic energy circulator can be achieved by pushing the turntable to rotate through the electric induced bending column 41.

It is understood that in the embodiment of the present invention, there are four electric field bending columns 41, and in other embodiments of the present invention, there may be a plurality of electric field bending columns 41, and each of the plurality of electric field bending columns 41 is connected to a voltage regulator, so as to individually regulate the voltage level of each electric field bending column 41. In a specific implementation, the steering assembly 40 may further include a current direction regulator connected to the electric bending column 41, and the combination of the positive and negative poles of each electrode and the magnitude of the voltage is performed through the outside, so that the end of the guiding tube 10 can be bent in any angle and to a specified angle when the current direction regulator is sufficiently fine.

Specifically, in the embodiment of the present invention, the ultrasonic transducer 30 is a built-in miniature ultrasonic transducer, which may be a single crystal or a multi-crystal, and the frequency of the wafer is selected by the desired imaging range and the tolerance of the body organ. Specifically, the ultrasonic transducer is placed on a cylindrical section with a certain inclination angle, so as to determine whether the ultrasonic transducer 30 rotates.

Specifically, in the embodiment of the present invention, the guiding pipe body 10 includes a flexible portion 11 and a supporting portion 12 connected to the flexible portion 11, a distal end of the electro-bending column 41 extends to a pipe orifice of the flexible portion 11, and the voltage regulator is disposed outside the supporting portion 12. It is understood that, in the implementation process, in order to facilitate the rotation and steering of the ultrasound transducer 30 by the electrostrictive column 41, the flexible portion 11 may have the electrostrictive and rotating functions, such as a non-magnetic spring tube.

The connection lines of the electronic devices such as the ultrasonic transducer 30 and the electrostrictive column 41 are arranged inside the guide tube body 10, and extend from the support portion 12 to the outside of the guide tube body 10 to be connected to devices such as a voltage regulator.

Referring to fig. 4, a catheter integrating controllable circular ultrasound scanning and steering functions is provided in a second embodiment of the present invention, which is different from the first embodiment in that a grip portion 50 is disposed at the periphery of the supporting portion 12, in this embodiment, the grip portion 50 is a grip protrusion, it can be understood that in other embodiments of the present invention, the grip portion 50 may be any one of a grip protrusion or a grip handle.

In other embodiments of the present invention, in order to prevent blood from entering into the guiding tube 10, a sealing cover plate may be disposed at the end of the guiding tube 10, the upper end of the base turntable 20 is disposed through the sealing cover plate, and the base turntable 20 is rotatably connected to the sealing cover plate to maintain the rotation of the ultrasonic transducer 30.

Referring to fig. 5, a catheter integrating controllable circumferential ultrasound scanning and steering functions according to a third embodiment of the present invention is different from the catheter according to the first embodiment in that, in the third embodiment, the steering assembly 40 includes four balloons 60 disposed outside the guiding tube 10 and an air evacuation and deflation device (not shown) connected to the four balloons 60, and the four balloons 60 are disposed outside the flexible portion 11 at regular intervals. The balloon 60 is inflated and deflated by controlling air suction and deflation, and the balloon abuts against the blood vessel to form the bending of the guide tube body 10, specifically, a mode of subdividing a plurality of groups of balloons 60 and distributing the plurality of groups of balloons 60 at different positions of the guide tube body 10 can be adopted, so that the purpose of accurately controlling the turning of the catheter is achieved.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.