Balloon dilation catheter for facilitating expansion support

Abstract

The application relates to the technical field of medical catheters, in particular to a balloon dilatation catheter convenient for expansion support, which comprises a supporting mechanism and an adjusting mechanism; the supporting mechanism comprises an injection tube, two sections of covering tubes are fixed outside the injection tube, an outer expansion balloon is arranged outside the injection tube, two ends of the outer expansion balloon are respectively installed with the two sections of covering tubes, a plurality of auxiliary supporting members are installed outside the injection tube, a guide wire is fixed at one end of the injection tube, the guide wire is fixed and penetrates through the covering tubes, a main medium hole and a plurality of auxiliary medium holes are arranged on the injection tube, the main medium hole is connected with the inside of the outer expansion balloon, the plurality of auxiliary medium holes are respectively connected with the insides of the plurality of auxiliary supporting members, and a medicine storage member is installed outside the outer expansion balloon. Compared with the prior art, the application can support the thrombus position in a directional manner, the thrombus can be smoothly medicated, and the treatment effect on the thrombus is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical catheter, in particular to a balloon dilatation catheter convenient for expansion support. BACKGROUND

[0002] Balloon dilatation is a minimally invasive interventional treatment technology, through a catheter, a inflatable balloon is sent to the body's narrow or occluded lumen structure (such as blood vessels, esophagus, biliary tract, etc.), the balloon dilatation pressure is used to open the lesion site, and the lumen patency is restored, and the core advantage is small trauma, fast recovery and repeatable operation, and it is commonly used for the treatment of coronary heart disease, peripheral vascular disease and part of non-vascular lumen stenosis.

[0003] When performing balloon dilatation, since the balloon dilatation catheter is soft, when the balloon is expanded, the balloon at the thrombus position of the blood vessel is blocked by the thrombus, so that the expansion range is smaller than other positions, the expansion effect on the blood vessel is poor, and since the balloon at the thrombus position is deformed, the drug solution on the surface of the balloon is difficult to smoothly penetrate and coat the thrombus position, thereby reducing the treatment effect on the thrombus.

[0004] Therefore, based on the above problems, the present application provides a balloon dilatation catheter convenient for expansion support. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a balloon dilatation catheter convenient for expansion support to solve the problems in the background art.

[0006] To achieve the above object, the present application provides the following technical scheme: a balloon dilatation catheter convenient for expansion support, comprising a support mechanism and an adjusting mechanism.

[0007] The support mechanism comprises an injection tube, two segments of a cladding tube are fixed outside the injection tube, an outer expansion balloon is sleeved outside the injection tube, two ends of the outer expansion balloon are respectively mounted with the two segments of the cladding tube, a plurality of auxiliary support members are mounted outside the injection tube, a guide wire is fixed at one end of the injection tube, the guide wire is fixed and penetrates through the cladding tube, a main medium hole and a plurality of auxiliary medium holes are arranged on the injection tube, the main medium hole is in communication with the inside of the outer expansion balloon, the plurality of auxiliary medium holes are respectively in communication with the inside of the plurality of auxiliary support members, and a drug storage member is mounted outside the outer expansion balloon.

[0008] Further, the plurality of auxiliary support members are arranged in a uniform annular array outside the injection tube.

[0009] Further, the auxiliary support member is a whole multilayer corrugated disc coaxially stacked, and is axially elastically deformable.

[0010] Further, the adjusting mechanism comprises an adjusting rod, the sheath tube is mounted on the adjusting rod, an annular plate is fixed on the adjusting rod, a plurality of sockets are arranged on the annular plate, the auxiliary syringes are mounted on the sockets, the adjusting rod is provided with an injection mechanism for synchronously injecting the auxiliary syringes, the plurality of sockets are respectively communicated with the plurality of auxiliary medium holes, and the adjusting rod is provided with an injection tube communicated with the main medium hole.

[0011] Further, the injection mechanism comprises a plurality of grooves arranged on the adjusting rod, a threaded rod is rotatably mounted in the groove, a plurality of threaded rods are drivingly connected through a transmission mechanism, a driving motor is mounted on the adjusting rod, a driving shaft of the driving motor is rotatably penetrated through the adjusting rod and coaxially mounted with one of the threaded rods, a threaded plate is sleeved with the outer thread of the threaded rod, the threaded plate is slidingly connected with the groove, a plurality of threaded plates are respectively matched with the auxiliary syringes, and a pressing mechanism for actively injecting the auxiliary syringes is arranged on the threaded plate.

[0012] Further, the transmission mechanism comprises a transmission groove arranged outside the adjusting rod, the transmission groove is communicated with the plurality of grooves, a transmission gear is coaxially mounted outside the threaded rod, and a transmission ring is rotatably mounted in the transmission groove, the transmission ring is provided with a plurality of annular tooth grooves meshing with the transmission gears.

[0013] Further, the pressing mechanism comprises a pressing column slidingly penetrating through the threaded plate, a pressure sensor is arranged at the bottom of the pressing column, a reset cavity is arranged in the threaded plate, a wedge-shaped plate is arranged in the reset cavity, both ends of the wedge-shaped plate are penetratingly arranged through the threaded plate, a wedge-shaped tooth groove matched with the reset cavity is arranged on the pressing column, a reset spring and a sliding plate are arranged in the reset cavity, both ends of the sliding plate are respectively fixed with the sliding plate and the inner wall of the reset cavity, the sliding plate is fixed with the wedge-shaped plate, a pull handle is fixed at the end of the wedge-shaped plate away from the pressing column, a limiting baffle is mounted at the end of the pressing column close to the auxiliary syringe, and the limiting baffle is matched with the pressing handle of the auxiliary syringe.

[0014] Further, the end of the wedge-shaped plate close to the pressing column is provided with a smooth inclined surface, and the inclined surface faces away from the auxiliary syringe.

[0015] Further, the medicine storage part is modularly arranged, the medicine storage part is provided with a medicine storage bag, the adjacent modules of the medicine storage part are connected in a flexible manner, the whole of the expanding bag is arranged in a folded manner, and the modules on the medicine storage part are fixed at the folded edges of the expanding bag.

[0016] Compared with the prior art, the balloon dilatation catheter provided by the application is convenient to expand and support, and has the following beneficial effects:

[0017] By setting the supporting mechanism and adjusting mechanism, when the balloon is expanded against the blood vessel, the auxiliary support member is used to support the inner wall of the balloon, and when the auxiliary support member is in contact with the thrombus and tightly abuts against the thrombus, the pressure of the supporting medium in the auxiliary support member at this position is greater than that of the auxiliary support members at other positions, so that the thrombus can be supported in a directional manner according to the pressure value, the effect of expanding the blood vessel is better, and the balloon can be supported, the balloon is expanded, and then the drug solution on the surface of the balloon is smoothly permeated to the thrombus to medicate the thrombus, thereby improving the treatment effect on the thrombus.

[0018] The present application can support the thrombus in a directional manner, smoothly medicate the thrombus, and improve the treatment effect on the thrombus. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure diagram of a balloon dilatation catheter convenient for expansion and support;

[0020] Figure 2 It is a front structure perspective view of a supporting mechanism in a balloon dilatation catheter convenient for expansion and support;

[0021] Figure 3 It is a side structure perspective view of a supporting mechanism in a balloon dilatation catheter convenient for expansion and support;

[0022] Figure 4 It is a structure diagram of an adjusting mechanism in a balloon dilatation catheter convenient for expansion and support;

[0023] Figure 5 It is a local structure diagram of an adjusting mechanism in a balloon dilatation catheter convenient for expansion and support;

[0024] Figure 6 It is a structure perspective view of a pressing mechanism in a balloon dilatation catheter convenient for expansion and support;

[0025] Figure 7 It is a structure diagram of a wedge-shaped plate in a balloon dilatation catheter convenient for expansion and support.

[0026] In the figure: 1, supporting mechanism; 2, adjusting mechanism; 3, medium injection pipe; 4, cladding pipe; 5, outer expansion balloon; 6, drug storage member; 7, auxiliary support member; 8, main medium hole; 9, auxiliary medium hole; 10, adjusting rod; 11, annular plate; 12, auxiliary syringe; 13, injection mechanism; 14, groove; 15, transmission groove; 16, threaded rod; 17, transmission gear; 18, transmission ring; 19, driving motor; 20, threaded plate; 21, pressing mechanism; 22, pressing column; 23, reset cavity; 24, wedge-shaped tooth groove; 25, limiting baffle; 26, wedge-shaped plate; 27, reset spring; 28, sliding plate; 29, pull handle; 30, injection pipe; 31, transmission mechanism; 32, guide wire; 33, spigot. DETAILED DESCRIPTION

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a balloon dilation catheter that is easy to expand and support.

[0029] like Figures 1-7 As shown, a balloon dilation catheter for easy expansion and support includes a support mechanism 1 and an adjustment mechanism 2. The support mechanism 1 includes an infusion tube 3, with two sections of sheathing tube 4 fixed outside the infusion tube 3. An external dilation balloon 5 is sheathed outside the infusion tube 3, with both ends of the external dilation balloon 5 respectively installed to the two sections of sheathing tube 4. Multiple auxiliary support components 7 are installed outside the infusion tube 3. A guide wire 32 is fixed to one end of the infusion tube 3, and the guide wire 32 is fixedly inserted through the sheathing tube 4. The infusion tube 3 has a main medium port 8 and multiple auxiliary medium ports 9, with the main medium port 8 communicating with the inside of the external dilation balloon 5. Multiple auxiliary medium holes 9 are connected to the interior of multiple auxiliary support components 7. Specifically, the multiple auxiliary support components 7 are arranged in a uniform ring array outside the injection tube 3. It is worth mentioning that the auxiliary support components 7 are arranged in a multi-layer corrugated disk coaxially stacked shape, and can be elastically deformed axially. A drug storage component 6 is installed outside the outer expansion bladder 5. It should be noted that the drug storage component 6 is modularly set. The drug storage component 6 has a drug storage bladder inside. Adjacent modules of the drug storage component 6 are softly connected. The outer expansion bladder 5 is folded as a whole. The modules on the drug storage component 6 are fixed to the folded edges of the outer expansion bladder 5.

[0030] The adjusting mechanism 2 comprises an adjusting rod 10, the cover tube 4 is installed on the adjusting rod 10, the adjusting rod 10 is fixed with an annular plate 11, a plurality of sockets 33 are arranged on the annular plate 11, the auxiliary injection syringes 12 are installed on the sockets 33, the adjusting rod 10 is provided with an injection mechanism 13 for synchronously injecting the auxiliary injection syringes 12, it is to be noted that the injection mechanism 13 comprises a plurality of grooves 14 arranged on the adjusting rod 10, the threaded rods 16 are rotatably installed in the grooves 14, the threaded rods 16 are drivingly connected through a transmission mechanism 31, it is to be noted that the transmission mechanism 31 comprises a transmission groove 15 arranged outside the adjusting rod 10, the transmission groove 15 is communicated with the grooves 14, the transmission gears 17 are coaxially installed outside the threaded rods 16, the transmission rings 18 are rotatably installed in the transmission groove 15, the transmission rings 18 are provided with a plurality of annular tooth grooves meshing with the transmission gears 17, the driving motor 19 is installed on the adjusting rod 10, the driving shaft of the driving motor 19 is rotatably penetrated through the adjusting rod 10 and is coaxially installed with one of the threaded rods 16, the threaded plates 20 are threadedly sleeved outside the threaded rods 16, the threaded plates 20 are slidingly connected with the grooves 14, the threaded plates 20 are matched with the auxiliary injection syringes 12 respectively, the pressing mechanisms 21 for actively injecting the auxiliary injection syringes 12 are arranged on the threaded plates 20, it is to be noted that the pressing mechanisms 21 comprise the pressing columns 22 slidingly penetrating through the threaded plates 20, the pressing columns 22 are provided with the pressure sensors at the bottom.

[0031] In the application, the threaded plates 20 are provided with reset cavities 23, the reset cavities 23 are provided with wedge-shaped plates 26, it is to be noted that the wedge-shaped plates 26 are provided with smooth inclined surfaces at one end close to the pressing columns 22, the inclined surfaces are directed away from the auxiliary injection syringes 12, the wedge-shaped plates 26 are penetratingly arranged at both ends of the threaded plates 20, the wedge-shaped tooth grooves 24 matched with the reset cavities 23 are arranged on the pressing columns 22, the reset springs 27 and the sliding plates 28 are arranged in the reset cavities 23, the sliding plates 28 are fixed at both ends with the sliding plates 28 and the inner walls of the reset cavities 23, the sliding plates 28 are fixed with the wedge-shaped plates 26, the pull handles 29 are fixed at one end of the wedge-shaped plates 26 away from the pressing columns 22, the limiting baffle plates 25 are installed at one end of the pressing columns 22 close to the auxiliary injection syringes 12, the limiting baffle plates 25 are matched with the pressing handles of the auxiliary injection syringes 12, the plurality of sockets 33 are communicated with the plurality of auxiliary medium holes 9, the injection tubes 30 are arranged on the adjusting rod 10 and are communicated with the main medium holes 8.

[0032] Through the above technical features: through the injection pipe 30 fills the main medium hole 8 with the supporting medium, the supporting medium enters the outer expansion bag 5, the outer expansion bag 5 is lifted up, until the outer expansion bag 5 is in contact with the blood vessel wall and is expanded, at this time, the driving motor 19 drives the plurality of threaded rods 16 to rotate, the plurality of threaded rods 16 drive the plurality of threaded plates 20 to move synchronously, the threaded plates 20 extrude the auxiliary injector 12, the supporting medium in the auxiliary injector 12 is filled into the plurality of auxiliary supporting members 7 through the plurality of auxiliary medium holes 9, the auxiliary supporting member 7 is lifted up synchronously, until the appropriate position, at this time, the display values of each pressure sensor are observed, when a certain value is obviously greater than the other values, it indicates that the auxiliary supporting member 7 at this position is under greater pressure, that is, the thrombus position is located at this position, at this time, the pressing column 22 is pressed manually, the pressing column 22 pushes the pressing handle of the auxiliary injector 12, the pressing handle pushes the supporting medium in the auxiliary injector 12 into the corresponding auxiliary supporting member 7, at this time, the auxiliary supporting member 7 can be truly targeted to the blood vessel at the thrombus position, and at the same time, the outer expansion bag 5 that is not expanded due to the thrombus blockage can be completely expanded, when the outer expansion bag 5 is expanded, the medicine storage member 6 is torn, the medicine in the medicine storage member 6 is overflowed, and the thrombus is treated.

[0033] Working principle:

[0034] Vessel expansion: through the injection pipe 30 fills the main medium hole 8 with the supporting medium, the supporting medium enters the outer expansion bag 5, the outer expansion bag 5 is lifted up, until the outer expansion bag 5 is in contact with the blood vessel wall and is expanded, at this time, the driving motor 19 drives the plurality of threaded rods 16 to rotate, the plurality of threaded rods 16 drive the plurality of threaded plates 20 to move synchronously, the threaded plates 20 extrude the auxiliary injector 12, the supporting medium in the auxiliary injector 12 is filled into the plurality of auxiliary supporting members 7 through the plurality of auxiliary medium holes 9, the auxiliary supporting member 7 is lifted up synchronously, until the appropriate position, at this time, the display values of each pressure sensor are observed, when a certain value is obviously greater than the other values, it indicates that the auxiliary supporting member 7 at this position is under greater pressure, that is, the thrombus position is located at this position, at this time, the pressing column 22 is pressed manually, the pressing column 22 pushes the pressing handle of the auxiliary injector 12, the pressing handle pushes the supporting medium in the auxiliary injector 12 into the corresponding auxiliary supporting member 7, at this time, the auxiliary supporting member 7 can be truly targeted to the blood vessel at the thrombus position, and at the same time, the outer expansion bag 5 that is not expanded due to the thrombus blockage can be completely expanded, when the outer expansion bag 5 is expanded, the medicine storage member 6 is torn, the medicine in the medicine storage member 6 is overflowed, and the thrombus is treated.

[0035] It should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0036] The above detailed description set forth above in connection with the disclosure merely describes exemplary embodiments of the application and is not intended to limit the scope of the application. It will be apparent to those skilled in the art that various modifications and changes can be made thereto without departing from the spirit and scope of the application.

Claims

1. A balloon dilation catheter that facilitates expansion support, characterized by: The supporting mechanism (1) and the adjusting mechanism (2) are included. The supporting mechanism (1) includes an injection tube (3), two sections of covering tubes (4) are fixed outside the injection tube (3), an expansion bag (5) is arranged outside the injection tube (3), two ends of the expansion bag (5) are respectively installed with the two sections of covering tubes (4), a plurality of auxiliary supporting members (7) are installed outside the injection tube (3), one end of the injection tube (3) is fixed with a guide wire (32), the guide wire (32) is fixed and penetrates through the covering tube (4), a main medium hole (8) and a plurality of auxiliary medium holes (9) are arranged on the injection tube (3), the main medium hole (8) is connected with the inside of the expansion bag (5), the plurality of auxiliary medium holes (9) are respectively connected with the inside of the plurality of auxiliary supporting members (7), and a medicine storage member (6) is installed outside the expansion bag (5). The adjusting mechanism (2) includes an adjusting rod (10), the covering tube (4) is installed on the adjusting rod (10), the adjusting rod (10) is fixed with an annular plate (11), a plurality of sockets (33) are arranged on the annular plate (11), an auxiliary injection device (12) is installed on the socket (33), an injection mechanism (13) for synchronously injecting the plurality of auxiliary injection devices (12) is arranged on the adjusting rod (10), the plurality of sockets (33) are respectively connected with the plurality of auxiliary medium holes (9), an injection tube (30) is arranged on the adjusting rod (10), and the injection tube (30) is connected with the main medium hole (8). The injection mechanism (13) includes a plurality of grooves (14) arranged on the adjusting rod (10), a threaded rod (16) is rotatably installed in the groove (14), a plurality of threaded rods (16) are drivingly connected through a transmission mechanism (31), a driving motor (19) is installed on the adjusting rod (10), a driving shaft of the driving motor (19) is rotatably penetrated through the adjusting rod (10) and coaxially installed with one of the threaded rods (16), a threaded plate (20) is sleeved outside the threaded rod (16), the threaded plate (20) is slidingly connected with the groove (14), a plurality of threaded plates (20) are respectively matched with the plurality of auxiliary injection devices (12), and a pressing mechanism (21) for actively injecting the auxiliary injection device (12) is arranged on the threaded plate (20).

2. The balloon dilation catheter of claim 1, wherein: The plurality of auxiliary supporting members (7) are uniformly and circularly arranged outside the injection tube (3).

3. The balloon dilation catheter of claim 1, wherein: The auxiliary supporting member (7) is integrally formed in a multilayer corrugated disc coaxial stacking shape and can be elastically deformed in the axial direction.

4. The balloon dilation catheter of claim 1, wherein: The transmission mechanism (31) includes a transmission groove (15) arranged outside the adjusting rod (10), the transmission groove (15) is connected with the plurality of grooves (14), a transmission gear (17) is coaxially installed outside the threaded rod (16), a transmission ring (18) is rotatably installed in the transmission groove (15), and a plurality of annular tooth grooves meshing with the transmission gear (17) are arranged on the transmission ring (18).

5. The balloon dilation catheter of claim 1, wherein: The pressing mechanism (21) comprises a pressing column (22) arranged through a threaded plate (20) slidingly, the bottom of the pressing column (22) is provided with a pressure sensor, the threaded plate (20) is internally provided with a reset cavity (23), the reset cavity (23) is internally provided with a wedge-shaped plate (26), both ends of the wedge-shaped plate (26) are arranged through the threaded plate (20) slidingly, the pressing column (22) is provided with a wedge-shaped tooth groove (24) matched with the reset cavity (23), the reset cavity (23) is internally provided with a reset spring (27) and a sliding plate (28), both ends of the sliding plate (28) are fixed with the sliding plate (28) and the inner wall of the reset cavity (23) respectively, the sliding plate (28) is fixed with the wedge-shaped plate (26), one end of the wedge-shaped plate (26) away from the pressing column (22) is fixed with a pull handle (29), one end of the pressing column (22) close to the auxiliary injector (12) is provided with a limiting baffle (25), the limiting baffle (25) is matched with a pressing handle of the auxiliary injector (12).

6. A balloon dilation catheter for facilitating dilation support according to claim 5, wherein: One end of the wedge-shaped plate (26) close to the pressing column (22) is provided with a smooth inclined surface, the inclined surface faces away from the auxiliary injector (12).

7. The balloon dilation catheter of claim 1, wherein: The medicine storage part (6) is arranged in a modular manner, the medicine storage part (6) is internally provided with a medicine storage bag, the adjacent modules of the medicine storage part (6) are connected in a flexible manner, the outer expansion bag (5) is arranged in a folded manner as a whole, and the modules on the medicine storage part (6) are fixed with the folded edges of the outer expansion bag (5).

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