CN113559395B - Balloon catheter special for BRTO and application 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 use method thereof, wherein the balloon catheter comprises the following components: a 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 manually controlled to rotate; the invention integrates the sacculus catheter and the Simon catheter, increases the controllable section for manual adjustment, greatly improves the possibility of smoothly carrying out varicose veins on the catheter, shortens the operation time, improves the success rate of the operation, reduces the uncomfortable feeling of a patient during the operation and reduces the infection risk.

Description

Balloon catheter special for BRTO and application 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 use method thereof.

Background

Balloon blocking retrograde venous vascular embolization is proprietary, also known as: BRTO; the existing BRTO operation procedure is as follows, as shown in fig. 1, firstly, introducing a simon catheter through a guide wire into a inferior vena cava, withdrawing the guide wire and introducing the catheter into a heart (against the heart wall) for molding, then, introducing the guide wire into a varicose vein by using the molded simon catheter to enter a spleen-kidney shunt opening, fixing the guide wire and extracting the simon catheter, then, as shown in fig. 2, introducing a balloon catheter into the varicose vein in a human body along the guide wire, injecting a contrast medium to expand the balloon, injecting an embolic agent through the catheter to embolize the varicose vein, and finally, keeping the catheter until the next day for extraction. But in actual surgery there are often the following problems: 1: as can be seen from fig. 1, in order to ensure that the simon catheter can smoothly enter the opening of the blood vessel of the spleen-kidney shunt, the deformation part of the simon catheter needs to be fully extended into the heart for molding, and arrhythmia and endocardial injury are easily induced in the process, and discomfort such as palpitation, chest distress and the like of a patient can also be caused; 2: when the balloon catheter enters the varicose vein, the inlet angle of the varicose vein and the shape problem of the tortuosity of the varicose vein of some patients lead to the balloon catheter being difficult to enter the varicose vein, and the process usually lasts for a long time according to different patients, thereby greatly prolonging the operation time and even leading to operation failure; 3: the method of using the Simon catheter and then using the saccule catheter has more operation steps, prolongs the operation time and has low efficiency. 4: the need to retain the catheter after surgery increases the risk of infection.

Disclosure of Invention

The invention aims to provide a balloon catheter special for BRTO and a use method thereof, which are integrated, and meanwhile, a controllable section for manual adjustment is added, so that the possibility of smoothly carrying out varicose veins on the catheter 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.

The embodiment of the invention is realized by the following technical scheme: a BRTO-specific balloon catheter, comprising: a 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 rotated by manual control.

Further, the controllable section is formed by stacking a plurality of circular rings, a first supporting piece and a second supporting piece are arranged on the upper surface of each circular ring, a third supporting piece and a fourth supporting piece are arranged on the lower surface of each circular 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 surface of the circular ring; the third support piece and the fourth support 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; the first traction wire, the second traction wire, the third traction wire and the fourth traction wire are uniformly arranged in the circle, the first traction wire passes through the first limiting ring in the vertical direction, a first fixed block is arranged on the first traction wire, the second traction wire passes through the first limiting ring in the vertical direction, a second fixed block is arranged on the second traction wire, the third traction wire passes through the second limiting ring in the vertical direction, a third fixed block is arranged on the third traction wire, and the fourth traction wire passes through the second limiting ring in the vertical direction, and a fourth fixed block is arranged on the fourth traction wire; the widths of the first fixed block, the second fixed block, the third fixed block and the fourth fixed block are larger than the diameters of the first limiting ring and the second limiting ring, and under the action of the first fixed block, the second fixed block, the third fixed block and the fourth fixed block, the first traction wire, the second traction wire, the third traction wire and the fourth traction wire drive the circular ring to swing.

Further, the balloon assembly 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, clamping grooves, injection holes and four lead holes are formed in the fixed disc, the first traction wire, the second traction wire, the third traction wire and the fourth traction wire respectively penetrate through the four lead holes and are 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 a filling part, the filling part is provided with a groove, the clamping part comprises a plurality of clamping strips, the first ends of the clamping strips are arranged in the groove, the two ends of the clamping strips 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 balloon.

Further, the circumference of the clamping strips is distributed in the grooves in a whole row, and the number of the clamping strips is more than or equal to 4.

Further, a bifurcation pipe is arranged at the first section of the conventional section and is connected with the balloon component, and an inflation inlet is arranged on the bifurcation pipe; be equipped with filling hole on the movable disk, the one end of bifurcation pipe passes filling hole intercommunication to sacculus, is equipped with on the movable disk and places the platform, places the platform and around filling hole setting, places the side of platform and the coaxial setting of first haulage line, places the ring side cover of platform and is equipped with first rubber band, still is equipped with first baffle on the recess, and first baffle is perpendicular first haulage line setting, and the one end setting of first baffle is between movable disk and first rubber band.

Further, the surface of the bifurcation tube is provided with anti-skid patterns.

Further, a second baffle plate is arranged on the groove and perpendicular to the first traction wire, and one end of the second baffle plate is arranged between the movable disc and the first baffle plate; still be equipped with the second rubber band between second baffle and the first baffle, the inside of the tip of bifurcation 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.

The application method of the BRTO special balloon catheter is applicable to the BRTO special balloon catheter and comprises the following steps of:

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

s2: the first traction wire, the second traction wire, the third traction wire and the fourth traction wire are manually controlled to drive the controllable section to rotate;

s3: when the balloon catheter special for BRTO 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, so that the bifurcation tube is broken and sealed;

s5: the separated BRTO special balloon catheter is taken out of the patient, and the balloon assembly is remained in the patient.

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

Drawings

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

FIG. 1 is a schematic illustration of the use of a conventional Simon catheter;

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

FIG. 3 is a schematic structural diagram of a balloon catheter dedicated for BRTO provided by the invention;

FIG. 4 is a schematic diagram of the controllable section of the balloon catheter for BRTO provided by the invention;

FIG. 5 is a schematic top view of a ring in a balloon catheter dedicated for BRTO provided by the invention;

FIG. 6 is a schematic diagram of the axial structure of a torus in a BRTO-dedicated balloon catheter according to the present invention;

FIG. 7 is a schematic diagram of the installation structure of a controllable section and a balloon assembly in a BRTO-dedicated balloon catheter provided by the invention;

FIG. 8 is a schematic diagram of the structure of a clamping disc in a BRTO-dedicated balloon catheter provided by the invention;

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

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

FIG. 11 is a schematic view of the installation structure of a first rubber band in a balloon catheter special for BRTO provided by the invention;

fig. 12 is a schematic diagram of an installation structure of a second rubber band in a BRTO-dedicated balloon catheter according to the present invention;

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

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the 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 invention, as 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 made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following 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 an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Examples

A BRTO-specific balloon catheter, as shown in fig. 3, comprising: the molding device comprises aconventional section 10, amolding section 20 and acontrollable section 30, wherein a first end of theconventional section 10 is provided with a filling opening for filling liquid medicine; the first end of theshaping section 20 is communicated with the second end of theconventional section 10, and a memory alloy guide wire is arranged in theshaping section 20, wherein the memory alloy guide wire is not limited in any way, and the purpose of the memory alloy guide wire is to construct theshaping section 20 into a Simon catheter, so that the Simon catheter plays the same role as the Simoncatheter 5, and the structure can be conveniently adjusted to enter a vein; the first end of thecontrollable section 30 is communicated with the second end of theshaping section 20, the second end of thecontrollable section 30 is provided with aballoon component 40, thecontrollable section 30 is manually controlled to rotate, the control mode of thecontrollable section 30 is not limited, for example, thecontrollable section 30 can be driven to rotate by a micro servo motor or can be realized by the following modes; the first section of theconventional section 10 is provided with abifurcation 63, thebifurcation 63 is connected with theballoon assembly 40, thebifurcation 63 is provided with an inflation inlet, and theballoon assembly 40 is injected with gas or liquid through thebifurcation 63 to block the varicose vein 4, so that the subsequent steps of the operation are facilitated; it should be noted that theconventional section 10, theshaping section 20 and thecontrollable section 30 are all provided through, so that the embolic agent is injected in the later stage to assist in blocking the varicose vein 4.

In some embodiments, the manual control of thecontrollable section 30 is achieved in a manner that facilitates entry of the catheter into the varicose vein 4 as shown in FIG. 2; specifically, as shown in fig. 4-6, thecontrollable section 30 is formed by stacking a plurality ofrings 31, as shown in fig. 6, the upper surface of eachring 31 is provided with afirst support 311 and asecond support 312, the lower surface of eachring 31 is provided with athird support 313 and afourth support 314, thefirst support 311, thethird support 313, thesecond support 312 and thefourth support 314 are arranged at 90 degrees intervals in the vertical projection direction, and thefirst support 311 and thesecond support 312 are in smooth transition with the upper surface of thering 31; thethird support 313 and thefourth support 314 smoothly transition with the lower surface of thecircular ring 31; thefirst support 311 and thethird support 313 of theadjacent ring 31 are hinged, and thesecond support 312 and thefourth support 314 of theadjacent ring 31 are hinged; by the above arrangement, theadjacent rings 31 are rotated along the connection line between the contact points of thefirst support 311 and thethird support 313 and the contact points of thesecond support 312 and thefourth support 314, and the rotation axes of theadjacent rings 31 are vertically staggered due to the arrangement of thefirst support 311, thesecond support 312, thethird support 313 and thefourth support 314 at 90 degrees, so that thecontrollable section 30 can realize the rotation motion along four directions.

Thecircular ring 31 is positioned below the first supportingpiece 311 and is provided with a first limitingring 33; a second limitingring 331 is arranged below the second supportingpiece 312; the inner circumference of thecircular ring 31 is also uniformly provided with afirst traction wire 32, asecond traction wire 321, athird traction wire 322 and afourth traction wire 323, namely four traction wires are uniformly distributed on four sides of thecircular ring 31, thefirst traction wire 32 passes through the first limitingring 33 along the vertical direction, thefirst traction wire 32 is provided with afirst fixing block 34, thesecond traction wire 321 passes through the first limitingring 33 along the vertical direction, thesecond traction wire 321 is provided with a second fixing block, thethird traction wire 322 passes through the second limitingring 331 along the vertical direction, thethird traction wire 322 is provided with a third fixing block, and thefourth traction wire 323 passes through the second limitingring 331 along the vertical direction, and thefourth traction wire 323 is provided with a fourth fixing block; because theadjacent rings 31 are respectively rotated by 90 degrees to be contacted and hinged together, the first limitingring 33 and the second limitingring 331 between the twoadjacent rings 31 are staggered in the vertical direction, as shown in fig. 5, the first limitingring 33 is respectively positioned above and to the right, the secondlimiting ring 331 is respectively positioned below and to the left, at this time, the first limitingring 33 above is penetrated by thefirst traction wire 32, the first limitingring 33 on the right is penetrated by thesecond traction wire 321, the second limitingring 331 below is penetrated by thethird traction wire 322, the second limitingring 331 on the left is penetrated by thefourth traction wire 323, and the purpose of the firstfixed block 34, the second fixed block, the third fixed block and the fourth fixed block is that the four traction wires can drive therings 31 to rotate along the connecting line of the two hinging points through the fixed blocks, thereby realizing the purpose of manual operation by controlling the free rotation direction of thecontrollable section 30 through controlling the 4 traction wires; specifically, the widths of thefirst 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 limitingring 33 and the secondlimiting ring 331, and under the action of thefirst fixing block 34, the second fixing block, the third fixing block and the fourth fixing block, thefirst traction wire 32, thesecond traction wire 321, thethird traction wire 322 and thefourth traction wire 323 drive thecircular ring 31 to swing.

It is apparent from the above structure that the shape of thegeneral balloon catheter 7 is adjusted by the shaping end so as to be convenient for entering into vein tissue, and the rotation direction of the end part of theballoon catheter 7 is adjusted manually by thecontrollable section 30, thereby further helping medical staff to place theballoon catheter 7 to a designated position quickly.

Further, in the present embodiment, theballoon assembly 40 is integrated to the end of the catheter, and after theballoon catheter 7 is placed at a designated position, the balloon can be injected with gas or liquid to perform the work of blocking the varicose vein 4, or to inject an embolic agent; in some procedures, however, the embolic agent requires time to coagulate while leaving theballoon catheter 7 in the patient for a prolonged period of time, increasing the risk of infection; in this embodiment, a way is provided to directly leave the balloon in the patient to occlude the varicose vein 4 without the need for an additional large amount of injected embolic agent, however, it should be noted here that if a balloon is used which is left in the patient, the balloon material should be made of a material which is absorbable by the human body, and the specific material will not be described here, but is a commercially available material.

Specifically, as shown in fig. 7-10, theballoon assembly 40 is detachably connected with thecontrollable section 30, theballoon assembly 40 comprises a shell, aclamping disc 50 is arranged at the second end of thecontrollable section 30, as shown in fig. 8, theclamping disc 50 comprises afixed disc 51 and amovable disc 52, aclamping groove 53, aninjection hole 56 and fourlead holes 54 are arranged on thefixed disc 51, thefirst traction wire 32, thesecond traction wire 321, thethird traction wire 322 and thefourth traction wire 323 respectively penetrate through the fourlead holes 54 and are fixedly connected with themovable disc 52, a plurality ofsprings 55 are arranged on themovable disc 52, thesprings 55 are positioned between themovable disc 52 and thefixed disc 51, and reset between themovable disc 52 and thefixed disc 51 is realized through thesprings 55; in case of pulling 4 pulling wires, themovable plate 52 moves toward thefixed plate 51.

As shown in fig. 10, the housing includes a clamping portion and afilling portion 41, thefilling portion 41 is provided with a groove, the clamping portion includes a plurality ofclamping strips 42, a first end of eachclamping strip 42 is disposed in the groove, two ends of eachclamping strip 42 are clamped in aclamping groove 53, themovable disc 52 is disposed in the groove, and a distance between theclamping strips 42 disposed symmetrically in pairs is smaller than a diameter of themovable disc 52; thefilling part 41 is used for placing the balloon; it should be noted that, when themovable disc 52 is placed in the groove, one end of the clamping portion is clamped by theclamping groove 53, and when 4 traction wires are simultaneously pulled and the traction force is greater than the elastic force of the plurality ofsprings 55, the 4 traction wires drive themovable disc 52 to move towards thefixed disc 51, so that themovable disc 52 will squeeze theclamping strip 42, the other end of theclamping strip 42 will come out from theclamping groove 53, the non-matching of theclamping strip 42 and theclamping groove 53 is realized, the separation of the shell and theclamping disc 50 is realized, and theballoon assembly 40 is left at the varicose vein 4.

It should be noted that, as shown in fig. 9, in order to avoid that the clamping member is not clamped by themovable disc 52 and cannot fall off, themovable disc 52 is provided with a avoidinggroove 521, and the clamping position of theclamping strip 42 and the contact surface of theclamping strip 42 and themovable disc 52 are arranged in a staggered manner, so that when theclamping strip 42 comes out from theclamping groove 53, theclamping strip 42 can pass through the avoidinggroove 521, and thus cannot be clamped by themovable disc 52, and complete falling off of theclamping disc 50 and the shell is ensured.

Further, since the balloon needs to be inflated with liquid or gas to achieve inflation, the balloon can be inflated spontaneously or inflated with liquid by using thebifurcation 63, and the inflated amount or the flushed liquid amount can be adjusted at will by using thebifurcation 63, which is convenient for control, specifically, as shown in fig. 11, thebifurcation 63 is arranged at the first section of theconventional section 10, and is connected with theballoon assembly 40, and an inflation port is arranged on thebifurcation 63; themovable disc 52 is provided with a filling hole, one end of thebifurcation 63 passes through the filling hole and is communicated with the sacculus, themovable disc 52 is provided with a placing table 70, the placing table 70 is arranged around the filling hole, the side surface of the placing table 70 is coaxially arranged with thefirst traction wire 32, the annular side of the placing table 70 is sleeved with afirst rubber band 61, the groove is also provided with afirst baffle plate 62, thefirst baffle plate 62 is arranged perpendicular to thefirst traction wire 32, and one end of thefirst baffle plate 62 is arranged between themovable disc 52 and thefirst rubber band 61; when themovable disc 52 is driven to move by 4 traction wires, thefirst baffle 62 is not understood, so that thefirst baffle 62 pushes down thefirst rubber band 61, one end of thebifurcation 63 is extruded in the process of recovering deformation of thefirst rubber band 61, on the premise of ensuring the strength of recovering deformation, the end of thebifurcation 63 is blocked, then the end of thebifurcation 63 is provided with a convenient-to-detach and easy-to-break part for pulling out thebifurcation 63, and thebifurcation 63 can be separated, and because of the existence of thefirst rubber band 61, the separatedbifurcation 63 is in a sealed state, so that the balloon left in the patient body cannot have air leakage or liquid, three points of course need to be described, namely: the material that remains should all adopt the human absorbable material to make, and the second point, in order to guarantee that there is not relative slip and produce sufficient leakproofness betweenfirst rubber band 61 and thebifurcation 63, then the surface ofbifurcation 63's tip should set up the anti-skidding line to inside sets up the material preparation that the leakproofness is good, can the complete seal under the effect offirst rubber band 61, and the third point, because the internal pressure of the sacculus of curved vein 4 department can not be very big, so be equipped with the breakable department onbifurcation 63, this breakable department can not be broken by the internal pressure of sacculus, still can adopt the following mode to guarantee the disconnection ofbifurcation 63 certainly.

Further, as shown in fig. 12, asecond baffle plate 65 is further provided on the groove, thesecond baffle plate 65 is disposed perpendicular to thefirst traction wire 32, and one end of thesecond baffle plate 65 is disposed between themovable disc 52 and thefirst baffle plate 62; asecond rubber band 64 is further arranged between thesecond baffle 65 and thefirst baffle 62, acircular disc 66 is further arranged in the end part of thebifurcation 63, a sharp angle is arranged on the annular side of thecircular disc 66, and the sharp angle is positioned between thefirst rubber band 61 and thesecond rubber band 64; corresponding sharp angle department sets up the breakable department on thebifurcation 63, aftermovable dish 52 begins the motion, and successive,first rubber band 61 is pushed down byfirst baffle 62, andbifurcation 63 seals, andsecond rubber band 64 is pushed down bysecond baffle 65, andfirst rubber band 61 andsecond rubber band 64 are respectively in the left and right sides ofdisc 66, and under the cooperation of two rubber bands and sharp angle, the breakable department ofbifurcation 63 breaks away, realizes the breaking away ofbifurcation 63, accomplishes the operation of leaving the sacculus after filling in the patient, and here,disc 66 can be taken away from the patient bybifurcation 63.

The working process is as follows: firstly, bending theshaping section 20 into a reasonable and effective shape, then stretching into themain vein 2, after stretching into the main vein 3, using the characteristics of theshaping section 20 to rapidly enable theballoon catheter 7 to enter the branch vein 3, if theballoon catheter 7 is smooth, directly entering the varicose vein 4, when meeting the condition shown in fig. 2, medical staff can manually pull thefirst traction wire 32, thesecond traction wire 321, thethird traction wire 322 or thefourth traction wire 323 respectively, thereby controlling the rotation direction of thecontrollable section 30 to enable the controllable section to be aligned with the orifice of the branch vein 3, then entering the controllable section, after entering the controllable section, starting to inflate or inject embolic agent into the balloon through thebifurcation 63, or only pulling 4 traction wires simultaneously to enable themovable disc 52 to move, and the periphery of themovable disc 52 is extruded with theclamping strip 42 to be separated from theclamping groove 53, simultaneously, thefirst rubber band 61 and thesecond rubber band 64 are pulled down from the placing table 70, sealing and breaking off thebifurcation tube 63 are completed, and theballoon catheter 7 is completely reserved in thebody 40 of a patient, and theballoon catheter assembly 40 is completely reserved in the body of the patient; it should be emphasized that during the whole process, when the rotation direction of thecontrollable section 30 is adjusted, four traction wires cannot be pulled at the same time, but when one of the traction wires is pulled, one of the traction wires is loosened, so that the symmetrical traction wire is pulled into the patient, and thus the rotation is realized; in addition, due to the existence of thespring 55, when 1 or 2 traction wires of the 4 traction wires are pulled, themovable disc 52 is not driven to translate, and all the circumferentially arrangedclamping strips 42 are not abutted against theclamping grooves 53, so that the situation of detachment cannot occur, therefore, the number of theclamping strips 42 is greater than or equal to 4 and the circumferences are uniform and respectively, and in addition, the strength of thespring 55 is required to be slightly larger, so that the situation that themovable disc 52 and thefixed disc 51 cannot be restored due to the fact that the strength of thespring 55 is too weak is avoided.

Finally, it should be noted that, in the present embodiment, on the premise of realizing the technical effect, the structures that are not specified are realized by adopting common technical schemes in the market or should be known to those skilled in the art, for example: the manner in which the shaped ends are connected to theconventional section 10, the configuration of the snap-fit strips 42 and the snap-fit grooves 53, the provision of through holes in the pass-throughdisc 66, etc. is relatively conventional and will not be explained in detail herein.

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

Claims (4)

1. A balloon catheter dedicated for BRTO, characterized in that: comprising the following steps:

a regular section (10), a first end of the regular section (10) being provided with a filling 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 assembly (40) is arranged at the second end of the controllable section (30), and the controllable section (30) is manually controlled to rotate; 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 (313), the second supporting piece (312) and the fourth supporting piece (314) are arranged at intervals of 90 degrees along the vertical projection direction, and the first supporting piece (311) and the second supporting piece (312) are in smooth transition with the upper surface of the circular ring (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, 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 limiting ring (331) is arranged below the second supporting piece (312);

the novel traction device is characterized in that a first traction wire (32), a second traction wire (321), a third traction wire (322) and a fourth traction wire (323) are uniformly arranged in the circular ring (31), the first traction wire (32) penetrates through the first limiting ring (33) in 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) in 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) in 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) in the vertical direction, and a fourth fixing block is arranged on the fourth traction wire (323);

the widths of the first fixed block (34), the second fixed block, the third fixed block and the fourth fixed block are larger than the diameters of the first limiting ring (33) and the second limiting ring (331), and under the action of the first fixed block (34), the second fixed block, the third fixed block and the fourth fixed 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; the balloon assembly (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 wire (32), the second traction wire (321), the third traction wire (322) and the fourth traction wire (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 part and a filling part (41), wherein a groove is formed in the filling part (41), the clamping part comprises a plurality of clamping strips (42), the first ends of the clamping strips (42) are arranged in the groove, the two ends of the clamping strips are clamped in the clamping grooves (53), the movable disc (52) is arranged in the groove, and the distance between the clamping strips (42) which are symmetrically arranged in pairs is smaller than the diameter of the movable disc; the filling part (41) is used for placing a balloon; a first section of the conventional section (10) is provided with a bifurcation pipe (63), the bifurcation pipe (63) is connected with the balloon component (40), and an inflation inlet is arranged on the bifurcation pipe (63);

be equipped with filling hole on movable dish (52), the one end of bifurcation pipe (63) is passed filling hole intercommunication extremely the sacculus, be equipped with on movable dish (52) and place platform (70), place platform (70) around filling hole sets up, place the side of platform (70) with coaxial setting of first haulage line (32), 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 haulage line (32) set up, the one end setting of first baffle (62) is in between movable dish (52) and first rubber band (61).

2. The BRTO-specific balloon catheter according to claim 1, wherein: the clamping strips (42) are distributed in the grooves in a circumferential array manner, and the number of the clamping strips (42) is more than or equal to 4.

3. The BRTO-specific balloon catheter according to claim 1, wherein: the surface of the bifurcation pipe (63) is provided with anti-skid patterns.

4. The BRTO-specific balloon catheter according to claim 1, wherein: a second baffle (65) is further arranged on the groove, the second baffle (65) is perpendicular to the first traction wire (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 bifurcation tube (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).

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