CN219126557U - Acoustic balloon catheter system - Google Patents

Abstract

The utility model discloses an acoustic wave balloon catheter system, comprising: an ultrasonic control generator; the catheter assembly comprises a conveying catheter and a balloon body, the proximal end of the conveying catheter is connected with the ultrasonic control generator, and the balloon bodies are arranged at the distal end of the conveying catheter in parallel along the axis direction of the balloon body; the balloon body comprises an inner tube and an inflatable balloon sleeved on the inner tube in a sealing way, the inner tube is used for introducing fluid into the inner cavity of the balloon, an ultrasonic generating element capable of generating ultrasonic waves is arranged between the inner tube and the balloon, and the ultrasonic generating element is connected with an ultrasonic control generator; through setting up ultrasonic wave generating element in the sacculus, utilize ultrasonic wave generating element to send the removal of ultrasonic wave and accomplish the endovascular calcified plaque, safe and reliable does not hinder the blood flow and passes through when the operation, can suitably prolong operation time according to patient's specific condition, guarantees the complete removal of calcified plaque, improves result of use.

Description

Acoustic balloon catheter system

Technical Field

The utility model belongs to the field of medical instruments, and particularly relates to an acoustic wave balloon catheter system.

Background

With the aggravation of population aging and the influence of factors such as environment, diet, life habit and the like, the incidence of vascular calcification and/or valve calcification is increasing year by year. When calcification of a blood vessel is required to be opened or a thin film formed by slight calcification is required to be repaired, it is common practice to use an inflatable balloon for pre-inflation. This typically requires significant pressure, and the inflatable balloon is gradually inflated under internal pressure until the pressure within the balloon ruptures or bursts the calcified lesions, which may also cause damage to the blood vessel.

To be able to safely and effectively remove calcified plaque in blood vessels, chinese patent publication No. CN109953799a discloses an ultrasonic balloon catheter assembly, a catheter system and a method of use, wherein calcified plaque in blood vessels of a human body is removed by means of forming ultrasonic waves in the human body. Compared with the conventional method of pre-expanding by using the inflatable balloon, the scheme is safer, but in the scheme, the catheter axially passes through the inner cavity of the balloon, the periphery of the balloon is sealed with the catheter, and the structure can obstruct blood flow to pass through after the balloon is expanded, so that the action part of the instrument is temporarily ischemic, the balloon cannot be expanded for a long time in operation, and the using effect is influenced. In addition, the calcified plaque in the scheme can not be effectively collected, and can drift to a far-end small blood vessel along with blood flow, so that cerebral apoplexy and the like occur, and the method brings great threat to the physical health of postoperative patients. Therefore, there is a need for improved designs of the structures of existing sonic balloons.

Disclosure of Invention

In view of the above, the utility model provides an acoustic balloon catheter system, which can safely remove calcified plaque on the inner wall of a blood vessel through optimizing and improving the whole structure of the existing acoustic balloon, and can properly prolong the operation time according to the light and heavy conditions of a lesion part, ensure complete removal of the calcified plaque and improve the use effect.

In order to achieve the above object, the present utility model provides the following technical solutions:

an acoustic balloon catheter system, comprising: an ultrasonic control generator; the catheter assembly comprises a conveying catheter and a balloon body, wherein the proximal end of the conveying catheter is connected with the ultrasonic control generator, and the balloon bodies are arranged at the distal end of the conveying catheter in parallel along the axis direction of the balloon body in a plurality of groups; the balloon body comprises an inner tube and an inflatable balloon sleeved on the inner tube in a sealing way, the inner tube is used for introducing fluid into the inner cavity of the balloon, an ultrasonic generating element capable of generating ultrasonic waves is arranged between the inner tube and the balloon, and the ultrasonic generating element is connected with an ultrasonic control generator.

Further, the inside of the conveying conduit is provided with a liquid injection cavity along the length direction of the conveying conduit and a liquid injection port communicated with the liquid injection cavity, and the inner pipe is connected to the far end of the conveying conduit and is communicated with the liquid injection cavity.

Further, the catheter assembly also comprises a filtering device, wherein the filtering device comprises a filter screen and an annular balloon which are respectively sleeved on the conveying catheter;

one end of the filter screen is fixedly connected with the conveying catheter, and the other end of the filter screen is connected with the annular balloon;

the annular sacculus is attached to the side wall of the blood vessel after being inflated and used for expanding the filter screen.

Further, the filtering device also comprises a first branch pipe and a second branch pipe which are arranged on the conveying conduit; the two ends of the first branch pipe and the second branch pipe are respectively and correspondingly communicated with the annular saccule and the liquid injection cavity and are used for injecting liquid into the annular saccule.

Further, corresponding accommodating grooves are formed in the peripheral wall of the conveying conduit and correspond to the first branch pipe and the second branch pipe, and when the filter screen is retracted, the first branch pipe and the second branch pipe are accommodated in the corresponding accommodating grooves.

Further, the catheter assembly further comprises a protective sleeve, the protective sleeve is sleeved on the conveying catheter in a sliding mode, and the filtering device and the balloon body can be pulled back and folded in the protective sleeve when being folded.

Further, the ultrasonic generating elements are ultrasonic chip elements, and are arranged in a plurality of groups at intervals along the length direction of the inner tube.

Further, a wire lumen is formed inside the delivery catheter, and a connection wire of the ultrasonic wave generating element may be connected to the ultrasonic control generator via the wire lumen.

Further, a wire guide tube is arranged in the conveying catheter in a front-back penetrating way, and extends to one side of the far end along the central line of the plurality of groups of balloon bodies and exceeds the far end of the balloon bodies; the guide wire is arranged in the guide wire tube, a guide block is arranged at the far end of the guide wire tube, and the guide wire is connected with the guide block.

Further, a coating film is arranged on the outer surfaces of the plurality of groups of balloon bodies, and the coating film is loaded with medicines; or when no coating film is provided, the medicine may be provided on the surface of the balloon body on the balloon outer side.

The utility model has at least one of the following beneficial effects:

1. according to the utility model, the ultrasonic generating element is arranged in the balloon, and ultrasonic waves are emitted by the ultrasonic generating element to complete removal of calcified plaque in the blood vessel, so that the balloon body is arranged in parallel to form a plurality of groups, and a channel for blood circulation can be formed at the central position of the plurality of groups of balloon bodies and at the joint of the two groups of balloons after the balloon is inflated and expanded, so that the blood flow is not hindered during operation, the operation time can be properly prolonged according to the specific condition of a patient, the complete removal of calcified plaque is ensured, and the use effect is improved;

2. the utility model is also provided with the filter screen device, the filter screen can collect and remove the shocked plaque, the operation quality can be effectively improved, and the health of the patient can be ensured;

3. the medicine is also loaded outside the balloon, so that the vascular intimal hyperplasia can be inhibited, vascular restenosis and the like after vascular intervention can be prevented, the loaded medicine can be well released through ultrasonic vibration, and compared with a conventional medicine balloon, the balloon has a better use effect.

4. The utility model has simple structure and convenient operation.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

FIG. 1 is a schematic front view of the present utility model

FIG. 2 is a schematic illustration of the axial measurement of the present utility model

FIG. 3 is a schematic cross-sectional view of the proximal end of a delivery catheter

FIG. 4 is a schematic cross-sectional view at A-A of FIG. 1

FIG. 5 is a schematic cross-sectional view of a balloon

FIG. 6 is an enlarged schematic view of a portion of the distal end of a delivery catheter

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-6, an acoustic balloon catheter system, comprising: the ultrasonic control generator is used for controlling the ultrasonic generating element 4 to work, such as start and stop, and the like, not shown in the figure, and certainly comprises a power supply and the like, which are conventional technologies and are not repeated here;

a catheter assembly comprising a delivery catheter 1 and a balloon, the proximal end of the delivery catheter being connected to the ultrasound control generator, where the proximal end refers to the end proximal to the operator; the balloon bodies are arranged at the far end of the conveying catheter 1 in parallel along the axis direction of the balloon bodies, and of course, two groups can be arranged in parallel; the balloon body comprises an inner tube 3 and an inflatable balloon 2 which is hermetically sleeved on the inner tube 3, the inner tube 3 is used for introducing fluid into the inner cavity of the balloon 2, the fluid can be normal saline and the like, an ultrasonic generating element 4 capable of generating ultrasonic waves is arranged between the inner tube 3 and the balloon 2, and the ultrasonic generating element 4 is connected with the ultrasonic control generator, and is generally electrically connected;

the ultrasonic control generator works and controls the ultrasonic generating element 4 to emit ultrasonic waves, so that the ultrasonic waves directly act on calcified spots through the fluid and the balloon 2, and the calcified spots are peeled off the blood vessel to achieve the purpose of removing the calcified spots in the blood vessel, and the use safety can be ensured by adopting an ultrasonic mode; the balloon bodies are arranged in parallel along the axial direction of the balloon bodies, a central channel can be formed at the center of each balloon 2 after the balloon 2 is expanded, a slit channel is formed at the slit of two connected balloons, the central channel and the slit channel can ensure blood circulation during operation, a doctor can properly prolong operation time according to the specific condition of a patient, the calcified plaque is completely removed, and the use effect is improved.

In this embodiment, the inner portion of the delivery catheter 1 is formed with a liquid injection cavity 101 along the length direction of the delivery catheter and is provided with a liquid injection port 101a communicated with the liquid injection cavity, wherein the liquid injection port 101a is arranged on the end face of the proximal end of the delivery catheter 1, and of course, also can be arranged on the side wall of the delivery catheter, and the inner tube 3 is connected to the distal end of the delivery catheter 1 and is communicated with the liquid injection cavity 101; by such a structural design, the balloon 2 can be inflated and expanded by pressurizing the liquid injected into the balloon 2 through the liquid injection port 101 a.

In this embodiment, the catheter assembly further includes a filtering device, where the filtering device includes a filter screen 5 and an annular balloon 6 that are respectively sleeved on the conveying catheter 1, where the filter screen 5 may be formed by braiding a flexible belt made of a high-strength PP material, or by braiding a metal wire, preferably a titanium alloy wire, and the annular balloon 6 is also made of a light-weight flexible material;

one end of the filter screen 5 is fixedly connected with the conveying conduit 1, the other end of the filter screen is connected with the annular balloon 6, and both ends of the filter screen can be bonded by glue; the annular saccule 6 is attached to the side wall of the blood vessel after being inflated and used for expanding the filter screen 5, and the filter screen 5 can be well fixed after being expanded and tapered; by arranging the filter screen device, the filter screen 5 can collect and remove the shocked plaque, so that the operation quality can be effectively improved, and the health of a patient can be guaranteed.

In this embodiment, the filtering device further includes a first branch pipe 7 and a second branch pipe 8 disposed on the conveying pipe 1, where the first branch pipe 7 and the second branch pipe 8 have certain deformability, and can be deformed and opened under the driving of the expansion force of the annular balloon 6, and of course, the number of branch pipes can be designed into multiple groups, but the two groups can make the structure simpler; the two ends of the first branch pipe 7 and the second branch pipe 8 are respectively and correspondingly communicated with the annular balloon 6 and the liquid injection cavity 101 and are used for injecting liquid into the annular balloon 6; the annular saccule 6 can be pressurized to expand and expand through the structural design, so that the filter screen 5 is driven to expand; and meanwhile, the first branch pipe 7 and the second branch pipe 8 can strengthen the stability of the filter screen 5 after being opened.

In this embodiment, corresponding receiving grooves 1a are formed in the peripheral wall of the conveying pipe 1 corresponding to the first branch pipe 7 and the second branch pipe 8, where the receiving grooves 1a are formed in a concave manner on the pipe wall, and the first branch pipe 7 and the second branch pipe 8 are received in the corresponding receiving grooves 1a when the filter screen 5 is retracted; the radial dimension of the whole can be reduced by designing the accommodating groove 1a, and the trafficability can be increased.

In this embodiment, the catheter assembly further includes a protective sleeve 9, the protective sleeve 9 is slidably sleeved on the delivery catheter 1, and clearance fit is adopted here, the filtering device and the balloon body can be pulled back and folded in the protective sleeve 9 when being folded, and by setting the protective sleeve 9, the balloon body or the filtering net device can be prevented from being scattered and damaged in the tube delivery process, and meanwhile, the filtering net 5 can be folded when the catheter assembly is withdrawn, so that calcified plaque can be prevented from leaking.

In this embodiment, the ultrasonic generating elements 4 are ultrasonic chip elements, and are arranged in multiple groups along the length direction of the inner tube 3 at intervals, or may be arranged in one group, and multiple groups are arranged to enhance the effect; the ultrasonic chip element 4 can be fixedly arranged on the catheter through a carrier ring, the carrier ring is fixedly sleeved on the catheter, a supporting platform is arranged on the carrier ring, and the ultrasonic generating element is fixedly arranged on the supporting platform, which are conventional technologies and are not repeated here.

In this embodiment, the wire lumen 102 is formed inside the delivery catheter 1, where the wire lumen 102 may be a wire tube disposed inside the delivery catheter 1 or integrally formed with the delivery catheter, the connection wires of the ultrasonic generating elements 4 may be connected to the ultrasonic control generator after passing through the wire lumen 102, where the connection wires of the ultrasonic generating elements 4 in the multiple groups of balloons 2 may be collected in the wire lumen 102 after passing through the inner tube 3, and then led out from the wire outlet 102a of the wire lumen 102 to be connected to the ultrasonic control generator, and by disposing the wire lumen 102, the overall structure arrangement may be more standard and tidy.

In this embodiment, a guide wire tube 10 is disposed in the delivery catheter 1 and penetrates the delivery catheter in front and back, and the guide wire tube 10 extends to one side of the distal end along the central line of the multiple groups of balloon bodies and exceeds the most distal end of the balloon bodies; a guide wire, not shown in the figure, is arranged in the guide wire tube 10, a guide block 11 is arranged at the distal end of the guide wire tube 10, and the guide wire is connected with the guide block 11, and is fixedly connected with the guide block 11; by this structural arrangement, the delivery catheter 1 can be guided by the guide wire and the guide block to reach the target position accurately.

In this embodiment, the outer surface of the multiple groups of balloon bodies is provided with a coating film 12, the coating film 12 is loaded with a drug, the drug can be one or more combinations selected from the drugs such as paclitaxel, rapamycin and the like, the drug can be released to the vessel wall to directly act on the vascular stenosis, in practice, the drug can be directly coated on the outer surface of the coating film 12, and a containing space can be provided for loading the drug, which are conventional techniques and are not repeated here; the coating 12 can be coated outside the balloon or can be partially attached to the outer surface of the balloon 2, and the coating 12 can be better attached to the wall of the blood vessel, so that the effect of dilating the narrow blood vessel by the balloon 2 can be enhanced, and meanwhile, the contact area between the outer surface of the balloon 2 and the inner wall of the blood vessel can be increased, so that the drug release amount is increased; it should be noted that the covering film 12 can also play a role in binding and shaping the balloon 2, so that the size uniformity of the balloon 2 after being expanded is better, and the vessel wall is better fitted; it should be noted that the strength of the covering film 12 is higher than that of any one of the balloons 2 (such as tensile strength, bending strength, yield strength, etc.), so as to enhance the puncture resistance of the balloons 2 at the calcified lesions of the blood vessel, improve the pressure resistance of the balloons 2 and reduce the compliance, thereby enhancing the expansion force of the balloons 2, and in practical operation, different materials or different molding modes can be selected;

or when the covering film 12 is not arranged, the medicine is arranged on the surface of the balloon body, which is on the outer side of the balloon 2, and when the covering film 12 is not arranged, the balloon body is relatively small in size, so that the outline diameter of the balloon 2 after being folded and pressed can be reduced, and a blood vessel with larger stenosis degree can be accessed, and the applicable scope of the vascular stenosis is wider;

in addition, because the ultrasonic generating element 4 is arranged between the balloon 2 and the inner tube 3, the carried medicine can be well released through ultrasonic vibration, and compared with the conventional medicine balloon, the medicine balloon has better use effect.

The application method of the utility model is as follows:

firstly, the catheter assembly is sent to a target position under the guidance of a guide wire, then the protective sleeve 9 is fixed, the delivery catheter 1 is pushed forward, the balloon body part reaches the part to be treated, and the filter screen device part is pushed out of the protective sleeve 9; then injecting liquid and pressurizing to expand the saccule, and opening the filter screen; then the ultrasonic control generator is used for controlling the ultrasonic generating element 4 to emit ultrasonic waves for working, and at the same time, the medicine is released; the ultrasound control generator is turned off according to the calcified plaque removal, the catheter assembly is withdrawn, and the withdrawal process is the reverse of the advancing process and will not be repeated here.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims (10)

1. An acoustic balloon catheter system, comprising:

an ultrasonic control generator;

the catheter assembly comprises a conveying catheter and a balloon body, wherein the proximal end of the conveying catheter is connected with the ultrasonic control generator, and the balloon bodies are arranged at the distal end of the conveying catheter in parallel along the axis direction of the balloon body in a plurality of groups;

the balloon body comprises an inner tube and an inflatable balloon sleeved on the inner tube in a sealing way, the inner tube is used for introducing fluid into the inner cavity of the balloon, an ultrasonic generating element capable of generating ultrasonic waves is arranged between the inner tube and the balloon, and the ultrasonic generating element is connected with an ultrasonic control generator.

2. The acoustic balloon catheter system of claim 1, wherein: the inner pipe is connected to the far end of the conveying pipe and is communicated with the liquid injection cavity.

3. The acoustic balloon catheter system of claim 2, wherein: the catheter assembly further comprises a filtering device, wherein the filtering device comprises a filter screen and an annular balloon which are respectively sleeved on the conveying catheter;

one end of the filter screen is fixedly connected with the conveying catheter, and the other end of the filter screen is connected with the annular balloon;

the annular sacculus is attached to the side wall of the blood vessel after being inflated and used for expanding the filter screen.

4. The acoustic balloon catheter system of claim 3, wherein: the filtering device also comprises a first branch pipe and a second branch pipe which are arranged on the conveying conduit; the two ends of the first branch pipe and the second branch pipe are respectively and correspondingly communicated with the annular saccule and the liquid injection cavity and are used for injecting liquid into the annular saccule.

5. The acoustic balloon catheter system of claim 4, wherein: corresponding accommodating grooves are formed in the peripheral wall of the conveying guide pipe and correspond to the first branch pipe and the second branch pipe, and when the filter screen is retracted, the first branch pipe and the second branch pipe are accommodated in the corresponding accommodating grooves.

6. The acoustic balloon catheter system of claim 3, wherein: the catheter assembly further comprises a protective sleeve, the protective sleeve is sleeved on the conveying catheter in a sliding mode, and the filtering device and the balloon body can be pulled back and folded in the protective sleeve when being folded.

7. The acoustic balloon catheter system of claim 1, wherein: the ultrasonic generating elements are ultrasonic chip elements and are arranged in a plurality of groups at intervals along the length direction of the inner tube.

8. The acoustic balloon catheter system of claim 7, wherein: the interior of the conveying catheter is provided with a wire cavity, and a connecting wire of the ultrasonic generating element can be connected with the ultrasonic control generator after passing through the wire cavity.

9. The acoustic balloon catheter system of claim 1, wherein: a guide wire tube is arranged in the conveying catheter in a front-back penetrating way, and extends to one side of the far end along the central line of the plurality of groups of balloon bodies and exceeds the far end of the balloon bodies; the guide wire is arranged in the guide wire tube, a guide block is arranged at the far end of the guide wire tube, and the guide wire is connected with the guide block.

10. The acoustic balloon catheter system of claim 1, wherein: the outer surfaces of the plurality of groups of balloon bodies are provided with coating films, and the coating films are loaded with medicines; or when no coating film is arranged, the medicine is arranged on the surface of the balloon body on the outer side of the balloon.

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