CN113559395A - Special balloon catheter for BRTO (vascular endothelial ablation and ablation) and use method - Google Patents

Abstract

The invention relates to the technical field of medical auxiliary equipment, and provides a balloon catheter special for BRTO and a using method thereof, wherein the balloon catheter comprises: the first end of the conventional section is provided with a filling port; the first end of the shaping section is communicated with the second end of the conventional section, and a memory alloy guide wire is arranged in the shaping section; the first end of the controllable section is communicated with the second end of the shaping section, the second end of the controllable section is provided with a balloon component, and the controllable section is controlled to rotate manually; the balloon catheter and the Simmons catheter are integrated, and meanwhile, the controllable section for manual adjustment is added, so that the possibility of the catheter smoothly performing varicose veins is greatly improved, the operation time is shortened, the success rate of the operation is improved, the discomfort of a patient in the operation is reduced, and the infection risk is reduced.

Description

Special balloon catheter for BRTO (vascular endothelial ablation and ablation) and use method

Technical Field

The invention relates to the technical field of medical auxiliary equipment, in particular to a balloon catheter special for BRTO and a using method thereof.

Background

The balloon occlusion retrograde venous vascular embolization special is also called as: BRTO; the conventional BRTO operation process comprises the steps of firstly, introducing a Simon catheter into an inferior vena cava through a guide wire, withdrawing the guide wire, introducing the catheter into a heart (against the heart wall) for molding, then, introducing the molded Simon catheter into an opening of a branch passage of spleen and kidney, introducing the guide wire to a varicose vein, fixing the guide wire, drawing out the Simon catheter, then, as shown in figure 2, delivering the balloon catheter to the varicose vein in a human body along the guide wire, injecting a contrast agent to expand the balloon, injecting an embolic agent through the catheter to embolize the varicose vein, and finally, keeping the catheter and taking out the catheter the next day. However, the following problems often exist in the actual operation: 1: as can be seen from fig. 1, in order to ensure that the simon catheter can smoothly enter the blood vessel opening of the spleen and kidney shunt, the deformed part of the simon catheter needs to be completely extended into the heart for molding, and the process is easy to induce arrhythmia and endocardial injury, and can also cause discomfort such as palpitation and chest distress of a patient; 2: when the balloon catheter enters a varicose vein, the entrance angle of the varicose vein and the form problem of the varicose vein tortuosity of some patients cause that the balloon catheter is difficult to enter the varicose vein, the process is usually continued for a long time according to different patients, the operation time is greatly prolonged, and even the operation is failed; 3: the method of firstly using the Simon catheter and then using the balloon catheter has multiple operation steps, prolongs the operation time and has low efficiency. 4: the catheter needs to be retained after surgery, increasing the risk of infection.

Disclosure of Invention

The invention aims to provide a balloon catheter special for BRTO and a using method thereof.

The embodiment of the invention is realized by the following technical scheme: a BRTO-specific balloon catheter, comprising: the first end of the conventional section is provided with a filling port; the first end of the shaping section is communicated with the second end of the conventional section, and a memory alloy guide wire is arranged in the shaping section; controllable section, the first end of controllable section and the second end intercommunication of moulding section, the second end of controllable section is equipped with sacculus subassembly, and controllable section is rotatory by artificial control.

Furthermore, the controllable section is formed by stacking a plurality of rings, a first supporting piece and a second supporting piece are arranged on the upper surface of each ring, a third supporting piece and a fourth supporting piece are arranged on the lower surface of each ring, the first supporting piece, the second supporting piece, the third supporting piece and the fourth supporting piece are arranged at intervals of 90 degrees in pairs along the vertical projection direction, and the first supporting piece and the second supporting piece are in smooth transition with the upper surfaces of the rings; the third supporting piece and the fourth supporting piece are in smooth transition with the lower surface of the circular ring; the first supporting piece and the third supporting piece of the adjacent circular rings are hinged, and the second supporting piece and the fourth supporting piece of the adjacent circular rings are hinged; the circular ring is positioned below the first supporting piece and is provided with a first limiting ring; a second limiting ring is arranged below the second supporting piece; a first traction wire, a second traction wire, a third traction wire and a fourth traction wire are further arranged on the inner circumference of the circular ring uniformly, the first traction wire penetrates through the first limiting ring along the vertical direction, a first fixing block is arranged on the first traction wire, the second traction wire penetrates through the first limiting ring along the vertical direction, a second fixing block is arranged on the second traction wire, the third traction wire penetrates through the second limiting ring along the vertical direction, a third fixing block is arranged on the third traction wire, the fourth traction wire penetrates through the second limiting ring along the vertical direction, and a fourth fixing block is arranged on the fourth traction wire; the widths of the first fixing block, the second fixing block, the third fixing block and the fourth fixing block are larger than the ring diameters of the first limiting ring and the second limiting ring, and the first traction wire, the second traction wire, the third traction wire and the fourth traction wire drive the circular ring to swing under the action of the first fixing block, the second fixing block, the third fixing block and the fourth fixing block.

Furthermore, the balloon component comprises a shell, a clamping disc is arranged at the second end of the controllable section, the clamping disc comprises a fixed disc and a movable disc, a clamping groove, an injection hole and four lead holes are formed in the fixed disc, a first traction wire, a second traction wire, a third traction wire and a fourth traction wire respectively penetrate through the four lead holes to be fixedly connected with the movable disc, a plurality of springs are arranged on the movable disc, and the springs are located between the movable disc and the fixed disc; the shell comprises a clamping part and an filling part, a groove is formed in the filling part, the clamping part comprises a plurality of clamping strips, the first ends of the clamping strips are arranged in the groove, two ends of each clamping strip are clamped in the clamping grooves, the movable disc is arranged in the groove, and the distance between the clamping strips which are symmetrically arranged in pairs is smaller than the diameter of the movable disc; the filling part is used for placing the saccule.

Furthermore, the clamping strips are distributed in the groove in a whole row at the periphery and the number of the clamping strips is more than or equal to 4.

Furthermore, a bifurcated pipe is arranged at the first section of the conventional section and connected with the balloon component, and an inflation inlet is formed in the bifurcated pipe; be equipped with on the movable disk and be equipped with sufficient hole, the one end of bifurcated pipe passes sufficient hole intercommunication to the sacculus, is equipped with on the movable disk and places the platform, places the platform around sufficient hole setting, places the side of platform and the coaxial setting of first pull wire, and the ring side cover of placing the platform is equipped with first rubber band, still is equipped with first baffle on the recess, and the setting of first pull wire of first baffle perpendicular, the one end setting of first baffle is between movable disk and first rubber band.

Furthermore, the surface of the bifurcated pipe is provided with anti-skid lines.

Further, a second baffle is arranged on the groove and is perpendicular to the first traction line, and one end of the second baffle is arranged between the movable disc and the first baffle; still be equipped with the second rubber band between second baffle and the first baffle, the inside of the tip of bifurcated pipe still is equipped with the disc, and the ring side of disc is equipped with the closed angle, and the closed angle is located between first rubber band and the second rubber band.

A using method of the BRTO special balloon catheter is suitable for the BRTO special balloon catheter, and comprises the following steps:

s1: after the shaping section is bent, the BRTO special balloon catheter is inserted into the body of a patient;

s2: driving rotation of the controllable section by manually controlling the first pull wire, the second pull wire, the third pull wire and the fourth pull wire;

s3: when the BRTO special balloon catheter enters a designated place, filling the balloon;

s4: after the balloon is filled, simultaneously pulling the first traction wire, the second traction wire, the third traction wire and the fourth traction wire to separate the balloon component from the controllable section, and breaking and sealing the bifurcated pipe;

s5: and taking the separated BRTO special balloon catheter out of the patient, and keeping the balloon component in the patient.

The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects: the invention aims to provide a balloon catheter special for BRTO, which integrates a balloon catheter and a Simon catheter, and simultaneously increases a controllable section for manual adjustment, greatly improves the possibility of the catheter smoothly performing varicose veins, shortens the operation time, improves the success rate of the operation, reduces the discomfort of a patient in the operation and reduces the risk of infection.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of a prior art Simon catheter in use;

FIG. 2 is a schematic view of a prior art balloon catheter in use;

FIG. 3 is a schematic structural view of a BRTO-specific balloon catheter provided by the present invention;

FIG. 4 is a schematic structural view of a controllable segment of a BRTO balloon catheter according to the present invention;

FIG. 5 is a schematic top view of a ring of the BRTO balloon catheter according to the present invention;

FIG. 6 is a schematic axial side view of a ring of the BRTO balloon catheter of the present invention;

FIG. 7 is a schematic view of an installation structure of a controllable segment and a balloon assembly in a BRTO-specific balloon catheter provided by the present invention;

FIG. 8 is a schematic structural view of a clamping disk in a BRTO-dedicated balloon catheter provided by the present invention;

fig. 9 is a schematic side view of a movable disk in a balloon catheter dedicated for BRTO according to the present invention;

fig. 10 is a schematic structural diagram of a shell in a BRTO-dedicated balloon catheter provided by the invention;

fig. 11 is a schematic view of an installation structure of a first rubber band in a balloon catheter special for BRTO according to the present invention;

fig. 12 is a schematic view of an installation structure of a second rubber band in the BRTO-dedicated balloon catheter provided by the invention;

icon: 1-heart, 2-main vein, 3-branch vessel, 4-varicose vein, 5-simon catheter, 6-guide wire, 7-balloon catheter, 10-conventional section, 20-shaping section, 30-controllable section, 40-balloon component, 63-bifurcation tube, 31-circular ring, 32-first traction wire, 33-first spacing ring, 34-first fixing block, 311-first supporting piece, 312-second supporting piece, 313-third supporting piece, 314-fourth supporting piece, 50-clamping disk, 51-fixing disk, 52-movable disk, 53-clamping groove, 54-lead hole, 55-spring, 56-injection hole, 521-avoiding groove, 41-filling part, 42-clamping strip, 61-first rubber band, 62-a first baffle, 64-a second rubber band, 65-a second baffle, 66-a disc, 331-a second limit ring, 321-a second traction line, 322-a third traction line, 323-a fourth traction line and 70-a placing table.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the terms are only used for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

A BRTO-specific balloon catheter, as shown in fig. 3, comprising: the device comprises a conventional section 10, a shaping section 20 and a controllable section 30, wherein a first end of the conventional section 10 is provided with a filling port for filling liquid medicine; the first end of the shaping section 20 is communicated with the second end of the conventional section 10, and a memory alloy guide wire is arranged in the shaping section 20, and it should be noted that the alloy guide wire is not limited, and the purpose is to construct the shaping section 20 into a simon catheter, so that the shaping section has the same function as the simon catheter 5, and the structure can be conveniently adjusted to enter the vein; the first end of the controllable section 30 is communicated with the second end of the shaping section 20, the second end of the controllable section 30 is provided with the balloon component 40, the controllable section 30 is controlled to rotate manually, and the control mode of the controllable section 30 is not limited, for example, a micro servo motor can be used for driving the controllable section 30 to rotate, or the following mode can be used for realizing the control; the first section of the conventional section 10 is provided with a bifurcation tube 63, the bifurcation tube 63 is connected with the balloon component 40, the bifurcation tube 63 is provided with an inflation inlet, and the balloon component 40 is injected with gas or liquid through the bifurcation tube 63 to block the varicose vein 4, so that the subsequent steps of the operation are facilitated; it should be noted that the conventional section 10, the shaping section 20 and the controllable section 30 are disposed therethrough to facilitate later injection of an embolic agent to aid in the occlusion of the varicose vein 4.

In some embodiments, manually controlling the controllable segment 30 is accomplished in a manner that facilitates entry of the catheter into the varicose vein 4 as shown in FIG. 2; specifically, as shown in fig. 4 to 6, the controllable section 30 is formed by stacking a plurality of rings 31, as shown in fig. 6, a first supporting member 311 and a second supporting member 312 are provided on an upper surface of each ring 31, a third supporting member 313 and a fourth supporting member 314 are provided on a lower surface of each ring 31, the first supporting member 311, the third supporting member 313, the second supporting member 312 and the fourth supporting member 314 are arranged at a distance of 90 degrees from each other along a vertical projection direction, and the first supporting member 311 and the second supporting member 312 are in smooth transition with the upper surface of the ring 31; the third support 313 and the fourth support 314 smoothly transition with the lower surface of the ring 31; the first support 311 and the third support 313 of the adjacent ring 31 are hinged, and the second support 312 and the fourth support 314 of the adjacent ring 31 are hinged; through the above arrangement, the two adjacent circular rings 31 rotate along the connecting line between the contact point of the first support part 311 and the third support part 313 and the contact point of the second support part 312 and the fourth support part 314, and moreover, because the first support part 311, the second support part 312, the third support part 313 and the fourth support part 314 are arranged at an interval of 90 degrees in pairs, the rotation axes of the adjacent circular rings 31 are mutually vertically staggered, so that the controllable section 30 can realize the rotation motion along four directions.

The circular ring 31 is positioned below the first supporting piece 311, and a first limit ring 33 is arranged below the first supporting piece 311; a second limit ring 331 is arranged below the second support 312; first traction wires 32, second traction wires 321, third traction wires 322 and fourth traction wires 323 are further uniformly arranged on the inner circumference of the circular ring 31, namely the four traction wires are uniformly distributed on the four sides of the circular ring 31, the first traction wires 32 penetrate through the first limiting ring 33 along the vertical direction, a first fixing block 34 is arranged on the first traction wires 32, the second traction wires 321 penetrate through the first limiting ring 33 along the vertical direction, a second fixing block is arranged on the second traction wires 321, the third traction wires 322 penetrate through the second limiting ring 331 along the vertical direction, a third fixing block is arranged on the third traction wires 322, the fourth traction wires 323 penetrate through the second limiting ring 331 along the vertical direction, and a fourth fixing block is arranged on the fourth traction wires 323; because the adjacent rings 31 can be contacted and hinged together only by rotating 90 degrees, the first limit ring 33 and the second limit ring 331 between the two adjacent rings 31 are staggered in the vertical direction, as shown in fig. 5, the first limit ring 33 is positioned above and right and the second limit ring 331 is positioned below and left respectively along the vertical direction, at this time, the first limit ring 33 above is penetrated by the first traction wire 32, the first limit ring 33 at the right is penetrated by the second traction wire 321, the second limit ring 331 below is penetrated by the third traction wire 322, the second limit ring 331 at the left is penetrated by the fourth traction wire 323, the purpose of the first fixing block 34, the second fixing block, the third fixing block and the fourth fixing block is that the four traction wires can drive the rings 31 to rotate along the connecting line of the two hinge points through the fixing blocks, thereby controlling the free rotation direction of the controllable section 30 by controlling 4 traction wires, the aim of manual operation is fulfilled; specifically, the widths of the first fixing block 34, the second fixing block, the third fixing block and the fourth fixing block are all larger than the diameters of the first limiting ring 33 and the second limiting ring 331, and under the action of the first fixing block 34, the second fixing block, the third fixing block and the fourth fixing block, the first traction wire 32, the second traction wire 321, the third traction wire 322 and the fourth traction wire 323 drive the circular ring 31 to swing.

It can be seen from the above structure that the shape of the balloon catheter 7 is adjusted by shaping the end to facilitate the entry into the vein tissue, and the rotation direction of the end of the balloon catheter 7 is manually adjusted by the controllable segment 30, thereby further helping the medical staff to place the balloon catheter 7 at a designated position quickly.

Further, in the embodiment, the balloon assembly 40 is integrated at the end of the catheter, and after the balloon catheter 7 is placed at a specified position, the balloon can be filled with gas or liquid to perform the occlusion work of the varicose vein 4 or inject the embolic agent; in some procedures, however, the embolic agent takes time to set, while leaving the balloon catheter 7 in the patient for a long time, increasing the risk of infection; in this embodiment, a way is provided to keep the balloon inside the patient directly for blocking the varicose vein 4 without the need of an extra large amount of injection embolic agent, but it should be noted that if the balloon kept inside the patient is used, the material of the balloon should be made into a material that can be absorbed by human body, and the specific material is not described at all, and the material that is commonly used in the market can be used.

Specifically, as shown in fig. 7-10, the balloon assembly 40 is detachably connected to the controllable section 30, the balloon assembly 40 includes a housing, the second end of the controllable section 30 is provided with a clamping disc 50, as shown in fig. 8, the clamping disc 50 includes a fixed disc 51 and a movable disc 52, the fixed disc 51 is provided with a clamping groove 53, an injection hole 56 and four lead holes 54, the first traction wire 32, the second traction wire 321, the third traction wire 322 and the fourth traction wire 323 respectively pass through the four lead holes 54 to be fixedly connected with the movable disc 52, the movable disc 52 is provided with a plurality of springs 55, the springs 55 are located between the movable disc 52 and the fixed disc 51, and the springs 55 are used for realizing the reset between the movable disc 52 and the fixed disc 51; in case of pulling 4 pulling wires, the movable plate 52 moves toward the stationary plate 51.

As shown in fig. 10, the housing includes a clamping portion and an filling portion 41, the filling portion 41 is provided with a groove, the clamping portion includes a plurality of clamping strips 42, a first end of each clamping strip 42 is disposed in the groove, two ends of each clamping strip 42 are clamped in the clamping grooves 53, the movable discs 52 are disposed in the grooves, and a distance between the clamping strips 42 disposed in a pairwise symmetry manner is smaller than a diameter of the movable disc 52; the filling part 41 is used for placing a balloon; it should be noted here that, when movable disc 52 placed in the recess, the one end of joint portion is blocked by joint groove 53, under the circumstances and traction force that 4 traction wires pull simultaneously be greater than the elasticity of a plurality of springs 55, 4 traction wires will drive movable disc 52 and move towards fixed disc 51 so, thereby movable disc 52 will extrude joint strip 42, the other end of joint strip 42 will come out from joint groove 53, the uncoordinated of joint strip 42 and joint groove 53 has been realized, thereby realized casing and joint disc 50's separation, just also leave balloon component 40 in varicose vein 4 department.

It should be further noted that, as shown in fig. 9, in order to avoid the clamping member from being blocked by the movable disc 52 and thus cannot fall off, the movable disc 52 is provided with an avoiding groove 521, and meanwhile, the clamping position of the clamping strip 42 and the contact surface between the clamping strip 42 and the movable disc 52 are arranged in a staggered manner, so that when the clamping strip 42 comes out of the clamping groove 53, the clamping strip can pass through the avoiding groove 521, and thus, the clamping strip cannot be blocked by the movable disc 52, and the clamping disc 50 and the housing can be ensured to fall off completely.

Further, since the balloon needs to be inflated with liquid or gas, a self-inflating balloon may be used herein, or the balloon may be inflated with liquid or gas by using the bifurcated tube 63, the bifurcated tube 63 has an advantage of being able to adjust the inflation amount or the flushing amount at will, which is convenient to control, and specifically, as shown in fig. 11, the bifurcated tube 63 is provided at the first section of the conventional section 10, the bifurcated tube 63 is connected to the balloon assembly 40, and the bifurcated tube 63 is provided with an inflation port; the movable disc 52 is provided with filling holes, one end of the bifurcated pipe 63 penetrates through the filling holes to be communicated with the balloon, the movable disc 52 is provided with a placing table 70, the placing table 70 is arranged around the filling holes, the side surface of the placing table 70 is coaxially arranged with the first traction line 32, the annular side of the placing table 70 is sleeved with a first rubber band 61, the groove is also provided with a first baffle 62, the first baffle 62 is arranged perpendicular to the first traction line 32, and one end of the first baffle 62 is arranged between the movable disc 52 and the first rubber band 61; when activity dish 52 is by 4 pull wires drive motion, first baffle 62 does not understand, thereby first baffle 62 pushes away first rubber band 61, at the in-process of the recovery deformation of first rubber band 61, extrude the one end of bifurcated pipe 63, under the prerequisite of the dynamics of having guaranteed to resume deformation, the tip of bifurcated pipe 63 is died by stifling, terminal setting convenient to detach at bifurcated pipe 63 so, the easy-to-break department, be used for extracting bifurcated pipe 63, can realize the breaking away from of bifurcated pipe 63, because the existence of first rubber band 61 again, so bifurcated pipe 63 after breaking away from is in sealed state, like this, keep somewhere the possibility that there can not be gas leakage or liquid at the internal sacculus of patient, of course need explain three points, the first point: the indwelling material should be made of a material which can be absorbed by human body, the second point, in order to ensure that the first rubber band 61 and the bifurcated tube 63 do not slide relatively and generate enough sealing performance, the surface of the end part of the bifurcated tube 63 should be provided with anti-skid lines, and the inner part is made of a material with good sealing performance and can be completely sealed under the action of the first rubber band 61, and the third point is that the inner pressure of the saccule at the varicose vein 4 is not very large, so that the bifurcated tube 63 is provided with a fracture part which cannot be broken by the inner pressure of the saccule, and the fracture of the bifurcated tube 63 can be ensured by adopting the following method.

Further, as shown in fig. 12, a second baffle 65 is further disposed on the groove, the second baffle 65 is disposed perpendicular to the first pull line 32, and one end of the second baffle 65 is disposed between the movable plate 52 and the first baffle 62; a second rubber band 64 is arranged between the second baffle 65 and the first baffle 62, a circular disc 66 is arranged inside the end part of the bifurcated pipe 63, a sharp corner is arranged on the circular side of the circular disc 66, and the sharp corner is positioned between the first rubber band 61 and the second rubber band 64; corresponding sharp corner, this department sets up the easy-to-break department on bifurcated pipe 63, after movable disc 52 began the motion, successively, first rubber band 61 is pushed down by first baffle 62, seals bifurcated pipe 63, and second rubber band 64 is pushed down by second baffle 65, and first rubber band 61 and second rubber band 64 are respectively in the left and right sides of disc 66, and under the cooperation of two rubber bands and sharp corner, the easy-to-break department of bifurcated pipe 63 breaks away, realizes breaking away from of bifurcated pipe 63, accomplishes the operation of keeping full sacculus in the patient, and here, disc 66 can be taken away from in the patient by bifurcated pipe 63.

This procedure is as follows: firstly, the shaping section 20 is bent into a reasonable and effective shape, then the shaping section 20 is stretched into the main vein 2, the balloon catheter 7 can be quickly inserted into the branch vessel 3 by utilizing the characteristic of the shaping section 20 after the shaping section 20 is stretched into the branch vessel 3, if the balloon catheter 7 can be directly inserted into the varicose vein 4, when the situation is met as shown in figure 2, medical personnel can manually respectively pull the first traction wire 32, the second traction wire 321, the third traction wire 322 or the fourth traction wire 323 so as to control the rotation direction of the controllable section 30 to quickly align the controllable section with the pipe orifice of the branch vessel 3, then the controllable section enters, when the controllable section enters the branch vessel, the balloon is inflated or injected with liquid or the embolic agent through the branch pipe 63, after the embolic agent is injected, only 4 traction wires are pulled simultaneously, so that the 4 traction wires drive the movable discs 52 to move, the periphery of the movable discs 52 press the clamping strip 42, and the clamping strip 42 is separated from the clamping groove 53, meanwhile, the first rubber band 61 and the second rubber band 64 are pushed down from the placing table 70, the operations of sealing and disconnecting the bifurcation tube 63 are completed, the whole balloon catheter 7 except the balloon component 40 is completely taken out of the patient body, and the balloon component 40 is left in the patient body; in the whole process, it is emphasized that when the rotation direction of the controllable section 30 is adjusted, four traction wires cannot be pulled simultaneously, but when one of the traction wires is pulled, the symmetrical traction wire is loosened to be pulled into the body of the patient, so that the rotation is realized; in addition, because of the existence of the spring 55, when pulling 1 or 2 pull wires in 4 pull wires, it is that the movable disc 52 can not be driven to translate, and the clamping strips 42 arranged on the periphery of the ring can not be completely abutted out of the clamping grooves 53, so that the situation of separation can not happen, therefore, the number of the clamping strips 42 is more than or equal to 4, and the periphery is uniform, and in addition, the strength of the spring 55 is slightly larger, and the situation that the movable disc 52 and the fixed disc 51 can not be restored because the strength of the spring 55 is too weak is avoided.

Finally, in the present embodiment, on the premise of achieving the technical effects, the structures that are not described in detail are all implemented by using the technical solutions that are commonly available on the market or should be understood by those skilled in the art, for example: the connection of the shaped end to the conventional segment 10, the snap-fit structure of the snap-fit strip 42 and the snap-fit groove 53, in order to ensure that the liquid passing through the holes in the disc 66, etc., are conventional, should not be interpreted here.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A special balloon catheter for BRTO is characterized in that: the method comprises the following steps:

the device comprises a conventional section (10), wherein a first end of the conventional section (10) is provided with a pouring opening;

a shaping section (20), wherein a first end of the shaping section (20) is communicated with a second end of the conventional section (10), and a memory alloy guide wire is arranged in the shaping section (20);

a controllable section (30), wherein a first end of the controllable section (30) is communicated with a second end of the shaping section (20), a balloon component (40) is arranged at the second end of the controllable section (30), and the controllable section (30) is manually controlled to rotate.

2. The BRTO-specific balloon catheter of claim 1, wherein: the controllable section (30) is formed by stacking a plurality of circular rings (31), a first supporting piece (311) and a second supporting piece (312) are arranged on the upper surface of each circular ring (31), a third supporting piece (313) and a fourth supporting piece (314) are arranged on the lower surface of each circular ring (31), the first supporting piece (311), the third supporting piece (312), the second supporting piece (313) and the fourth supporting piece (314) are arranged at a distance of 90 degrees in a pairwise manner along the vertical projection direction, and the first supporting piece (311) and the second supporting piece (312) are in smooth transition with the upper surfaces of the circular rings (31); the third supporting piece (313) and the fourth supporting piece (314) are in smooth transition with the lower surface of the circular ring (31);

a first support (311) and a third support (313) adjacent to the ring (31) are hinged, and a second support (312) and a fourth support (314) adjacent to the ring (31) are hinged;

the circular ring (31) is positioned below the first supporting piece (311) and is provided with a first limiting ring (33); a second limit ring (331) is arranged below the second support (312);

a first traction wire (32), a second traction wire (321), a third traction wire (322) and a fourth traction wire (323) are uniformly arranged on the inner circumference of the circular ring (31), the first traction wire (32) penetrates through the first limiting ring (33) along the vertical direction, a first fixing block (34) is arranged on the first traction wire (32), the second traction wire (321) penetrates through the first limiting ring (33) along the vertical direction, a second fixing block is arranged on the second traction wire (321), the third traction wire (322) penetrates through the second limiting ring (331) along the vertical direction, a third fixing block is arranged on the third traction wire (322), and the fourth traction wire (323) penetrates through the second limiting ring (331) along the vertical direction and a fourth fixing block is arranged on the fourth traction wire (323);

the width of the first fixing block (34), the width of the second fixing block, the width of the third fixing block and the width of the fourth fixing block are all larger than the diameters of the first limiting ring (33) and the second limiting ring (331), and under the action of the first fixing block (34), the second fixing block, the third fixing block and the fourth fixing block, the first traction wire (32), the second traction wire (321), the third traction wire (322) and the fourth traction wire (323) drive the circular ring (31) to swing.

3. The BRTO-specific balloon catheter of claim 2, wherein: the balloon component (40) comprises a shell, a clamping disc (50) is arranged at the second end of the controllable section (30), the clamping disc (50) comprises a fixed disc (51) and a movable disc (52), a clamping groove (53), an injection hole (56) and four lead holes (54) are formed in the fixed disc (51), the first traction line (32), the second traction line (321), the third traction line (322) and the fourth traction line (323) respectively penetrate through the four lead holes (54) to be fixedly connected with the movable disc (52), a plurality of springs (55) are arranged on the movable disc (52), and the springs (55) are located between the movable disc (52) and the fixed disc (51);

the shell comprises a clamping portion (42) and an filling portion (41), a groove is formed in the filling portion (41), the clamping portion comprises a plurality of clamping strips (42), the first ends of the clamping strips (42) are arranged in the groove, the two ends of each clamping strip are clamped in the clamping grooves (53), the movable disc (52) is arranged in the groove, and the distance between every two symmetrically arranged clamping strips (42) is smaller than the diameter of the movable disc; the filling portion (41) is used for placing a balloon.

4. The BRTO-specific balloon catheter of claim 3, wherein: the clamping strips (42) are distributed in the grooves in a circumferential array mode, and the number of the clamping strips (42) is larger than or equal to 4.

5. The BRTO-specific balloon catheter of claim 3, wherein: a bifurcation tube (63) is arranged at the first section of the conventional section (10), the bifurcation tube (63) is connected with the balloon component (40), and an inflation inlet is formed in the bifurcation tube (63);

be equipped with on activity dish (52) and fill the hole, the one end of bifurcated pipe (63) is passed fill the hole intercommunication to the sacculus, be equipped with on activity dish (52) and place platform (70), place platform (70) and center on fill the hole setting, the side of placing platform (70) with first pull wire (32) coaxial arrangement, the ring side cover of placing platform (70) is equipped with first rubber band (61), still be equipped with first baffle (62) on the recess, first baffle (62) are perpendicular first pull wire (32) set up, the one end setting of first baffle (62) is in between activity dish (52) and first rubber band (61).

6. The BRTO-specific balloon catheter of claim 5, wherein: the surface of the bifurcated pipe (63) is provided with anti-skid grains.

7. The BRTO-specific balloon catheter of claim 5, wherein: a second baffle (65) is further arranged on the groove, the second baffle (65) is perpendicular to the first traction line (32), and one end of the second baffle (65) is arranged between the movable disc (52) and the first baffle (62); still be equipped with second rubber band (64) between second baffle (65) and first baffle (62), the inside of the tip of bifurcated pipe (63) still is equipped with disc (66), the ring side of disc (66) is equipped with the closed angle, the closed angle is located between first rubber band (61) and second rubber band (64).

8. The BRTO-only balloon catheter is applicable to any one of claims 1 to 7, and is characterized in that: the method comprises the following steps:

s1: after the shaping section is bent, the BRTO special balloon catheter is inserted into the body of a patient;

s2: driving rotation of the controllable section by manually controlling the first pull wire, the second pull wire, the third pull wire and the fourth pull wire;

s3: when the BRTO special balloon catheter enters a designated place, filling the balloon;

s4: after the balloon is filled, simultaneously pulling the first traction wire, the second traction wire, the third traction wire and the fourth traction wire to separate the balloon component from the controllable section, and breaking and sealing the bifurcated pipe;

s5: and taking the separated BRTO special balloon catheter out of the patient, and keeping the balloon component in the patient.

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