CN111568562A - Balloon device and balloon system - Google Patents

Abstract

The application relates to the field of medical equipment, in particular to a balloon device and a balloon system. The sacculus device includes the sacculus mesh grid, and the sacculus mesh grid includes the collection portion, still includes netted pipe and the outer pole that connects gradually, and the free end and the collection portion of netted pipe are connected, still is equipped with in netted pipe and the outer pole and pulls the piece, and the distal end of pulling the piece is connected with the collection portion, and the extending direction is unanimous with the axial direction of netted pipe and outer pole, pulls the piece including pulling the section with the corresponding first section of pulling of netted pipe and with the corresponding second of outer pole, first pull the section laminate in the pipe wall of netted pipe, the second pulls the section and is located the outer pole, the second pull the near-end of section expose in the outer pole. The utility model provides a head end of accurate location and tracking seal wire and pipe in ultrasonic intervention treatment is convenient for to do benefit to the intracardiac chamber way through a plurality of crookedness, with the damage that reduces the operation degree of difficulty and to patient.

Description

Balloon device and balloon system

Technical Field

The application relates to the field of medical equipment, in particular to a balloon device and a balloon system.

Background

The interventional therapy depends on the guidance of medical imaging equipment, diagnoses and treats diseases by utilizing puncture needles, catheters and other interventional devices, and has the characteristics of accurate positioning, small wound, few complications, high curative effect, quick response, strong repeatability and the like. Interventional therapy has become the third major clinical treatment means in parallel with medical and surgical operations. Interventional therapy is a wide variety of techniques, and can be divided into intravascular interventional techniques and non-vascular interventional techniques.

The endovascular intervention technology is to apply selective or super-selective angiography, to determine the lesion part, property, range and degree, and then to perform embolization, endovascular angioplasty, drug perfusion and other treatments through a catheter inserted into the blood vessel according to the indication. By adopting the intravascular interventional technique, various materials, instruments and medicines can be delivered into the heart and artery and vein vessels of a human body. For example, transseptal needles, valve repair devices, heart block devices, vascular stents, vascular filters, and the like may be placed at selected locations by interventional techniques.

When an endovascular intervention is used for treatment, an interventional treatment entrance is usually made by a puncture method, and then an interventional delivery assisting device and an interventional delivery system are sent into a blood vessel so as to establish a passage from the entrance to a lesion position, and then radiography is performed through digital subtraction angiography (DSA for short), so that the position and the structure information of the lesion are determined. Since the interventional procedure does not expose the diseased tissue, the operator needs to view the position of the instrument within the body through images on the medical imaging device. Any instrument entering the human body too close or too far from the lesion site may fail the treatment and even cause severe damage to the human body tissue.

In the operation adopting the intravascular interventional technology, the guide wire plays a role of guiding and positioning for various interventional medical catheters and implanted instruments to enter human organs in the interventional therapy operation process, and is an indispensable matched product of diagnosis and interventional instruments. Whether the guide wire is properly selected usually determines the smoothness and success or failure of the transvascular intervention operation. In the last decade, the application of the ultrasound-guided intravascular interventional therapy technology is becoming more and more widespread, and the biggest problems existing in the ultrasound-guided intravascular interventional therapy technology are that: the guide wire and the catheter head end under the ultrasonic image are difficult to track and position, and when the ultrasonic imaging device is used, the ultrasonic device is required to be scanned by multiple sections to track the catheter and the guide wire. Due to the principle attributes of ultrasonic imaging and the angle of the two-dimensional section, the ultrasonic images of the catheter and the guide wire head end and the main body part are often overlapped and are not easy to distinguish. Therefore, the position information of the catheter and the guide wire head can be obtained only by multiple adjustments, the operation difficulty is increased, the operation time is prolonged, and the damage to the body of a patient is increased. The guide wires and catheters currently available on the market are even less able to provide precise guidance and positioning if it is desired to navigate through multiple curves of the body lumen.

Disclosure of Invention

In view of the above-described shortcomings of the prior art, the present application provides a balloon apparatus and balloon system that facilitates accurate positioning and tracking of the tip of a guidewire and catheter during ultrasound interventional therapy and facilitates the passage of intracardiac tracts of multiple curvatures to reduce operational difficulties and trauma to the patient.

For realizing above-mentioned purpose, this application provides a sacculus device on the one hand, including sacculus mesh grid, sacculus mesh grid includes the collection portion, still including netted pipe and the outer pole that connects gradually, the free end and the collection portion of netted pipe are connected, still be equipped with in netted pipe and the outer pole and pull the piece, the distal end and the collection portion of pulling the piece be connected, and extending direction with the axial direction of netted pipe and outer pole is unanimous, pull the piece include with netted corresponding first section of pulling of pipe and with the corresponding second of outer pole pull the section, first pull the section laminate in the pipe wall of netted pipe, the second pulls the section and is located the outer pole, the second pull the proximal end of section expose in the outer pole.

In some embodiments of the present application, the balloon-knitted mesh is a closed mesh structure knitted from elastic metal wires.

In some embodiments of the present application, the balloon-braided mesh comprises first and second mesh sides of identical construction, the edges of the first and second mesh sides being closed.

In some embodiments of the present application, the balloon braided mesh is spindle-shaped.

In some embodiments of the present application, the traction element is selected from a guidewire; the guide wire is made of flexible metal wires.

In some embodiments of the present application, the mesh tube is woven from elastic metal wires.

In some embodiments of the present application, the balloon device further comprises an operating portion including a housing connected to the proximal end of the outer shaft, and the second pulling section of the pulling member extends into the housing interior in an axial direction of the housing.

In some embodiments of this application, the operation portion still includes the action bars, the casing lateral wall is equipped with the through-hole, the action bars wears to penetrate the through-hole and extends into along casing radial direction inside the casing, the action bars is including locating the first operation section in the casing outside with locate the inside second operation section of casing, it twines to draw the piece on the second operation section, the one end that first operation section was kept away from to the second operation section is equipped with screw thread portion, casing lateral wall that the casing through-hole is relative be equipped with screw thread portion matched with screw thread butt joint portion.

In some embodiments of the present application, the operating portion further includes a knob connected to an end of the first operating section away from the housing;

and/or an inner groove matched with the second operation section is arranged in the shell.

In another aspect, the present application provides a balloon system, wherein the guiding component is sleeved outside the balloon device, and the guiding component is matched with the balloon device.

In conclusion, the accurate regulation and control of balloon woven mesh camber through the operation portion or directly through the traction wire near-end has been guaranteed in this application. The balloon braided net has enough flexibility and restorability, and the possibility of damaging the tissue of a lesion part by the guide wire is reduced. The outer pole is the rigid structure, has guaranteed that sacculus mesh grid has good propelling movement nature, the nature of turning round accuse, makes sacculus mesh grid reach pathological change position smoothly, and the morphological characteristic of sacculus mesh grid can show on cardiovascular ultrasonic instrument, is convenient for accurate location and trail the head end of traction piece for example seal wire and guide assembly for example pipe in the treatment is intervened to the supersound to do benefit to the intracardiac chamber way through a plurality of crookedness, with the damage that reduces the operation degree of difficulty and to patient.

Drawings

Fig. 1 is a front view of a balloon mesh grid in the present application.

Fig. 2 is a schematic structural diagram of a balloon braided net and a traction member in the application.

Fig. 3 is a schematic structural view of an embodiment of the balloon apparatus of the present application.

Fig. 4 is a schematic structural view of another embodiment of a balloon device according to the present application.

Fig. 5 is a schematic structural view of an operation portion according to the present application.

Fig. 6 is a schematic cross-sectional view of the operation portion of the present application.

Fig. 7 is a schematic structural diagram of a knob according to the present application.

Fig. 8 is a schematic structural view of a balloon device according to the present application in a curved state.

Fig. 9 is a schematic structural diagram of a balloon device and a guide assembly in combination in a balloon system according to the present application in a use state.

Fig. 10 is a schematic structural view of another usage state of the balloon system of the present application in which the balloon device is combined with the guide assembly.

Fig. 11 is a schematic structural view of another usage state of the balloon system of the present application in which the balloon device is combined with the guide assembly.

Description of the element reference numerals

1 sacculus woven mesh

11 distal end portion

12 proximal end portion

13 distal boundary one

14 distal boundary two

15 proximal boundary one

16 proximal boundary two

17 gathering part

2 traction element

21 first traction segment

22 second traction segment

3 mesh tube

4 outer pole

5 operating part

51 knob

52 operating rod

53 threaded part

54 threaded abutment

55 inlet

56 inner groove

57 casing

6 guide assembly

Detailed Description

The following description of the embodiments of the present application is provided for illustrative purposes, and other advantages and capabilities of the present application will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application. In addition, the terms such as "upper", "lower", "left", "right" and "middle" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present application, and changes or modifications of the relative relationship therebetween may be regarded as the scope of the present application without substantial changes in the technical contents.

As shown in fig. 2 and 3, in one aspect, the present embodiment provides a balloon device, which includes a balloon-woven mesh 1, the balloon braiding net 1 comprises a gathering part 17, a reticular tube 3 and an outer rod 4 which are connected in sequence, the free end (the end close to the balloon woven net) of the reticular tube 3 is connected with the collecting part 17, the reticular tube 3 and the outer rod 4 are also provided with a traction piece 2, the far end (the end close to the balloon braided net) of the traction piece 2 is connected with the collection part 17, and the extending direction is consistent with the axial direction of the reticular tube 3 and the outer rod 4, said traction means 2 comprise a first traction segment 21 corresponding to the mesh tube 3 and a second traction segment 22 corresponding to the outer bar 4, the first traction section 21 is attached to the pipe wall of the reticular pipe 3, the second traction section 22 is positioned in the outer rod 4, and the near end of the second traction section 22 is exposed out of the outer rod 4. When the device is used, the balloon device is matched with the guide assembly 6 for use, as shown in fig. 9, the guide assembly 6 with certain flexibility is sleeved on the balloon device from the end of the balloon woven net 1 to the end of the outer rod 4, the proximal end (the proximal end is the end close to the operator) of the second traction section 22 in the traction piece is held by hand, when the traction piece 2 moves towards the end far away from the gathering part 17, the first traction section 21 is attached to the pipe wall of the mesh pipe 3, namely, the first traction section 21 is attached to the pipe wall of the mesh pipe 3 and is distributed in a cross mode, so that the part, exposed out of the outer rod 4, of the mesh pipe 3 can be bent according to the shape of the intracardiac tract of a human body under the drive of the distal end of the traction piece, and the flexible guide assembly 6 is also bent along with the guide assembly (as shown in fig. 10. When reaching the lesion, the traction member 2 gradually moves toward the end close to the gathering part 17, as shown in fig. 11, the balloon-woven mesh 1 is released from the guide assembly 6, the morphological characteristics of the balloon-woven mesh 1 can be displayed on the cardiovascular ultrasonic instrument, and therefore, the tracking and positioning effects can be achieved.

In one embodiment, the mesh tube 3 and the outer rod 4 are connected end to end in sequence.

In another embodiment, the reticulated tube 3 comprises a first reticulated segment corresponding to the first traction segment 21 and a second reticulated segment corresponding to the outer rod 4, the second reticulated segment being disposed inside the outer rod 4, the second traction segment 22 being located in the second reticulated segment.

In the balloon device provided by the application, the balloon knitting net 1 is a closed net structure knitted by elastic metal wires. Has sufficient flexibility and recovery properties. The elastic wires are gathered at the gathering portion 17. Specifically, the elastic metal wire is a nickel-titanium alloy wire.

Further, the balloon woven mesh 1 comprises a first mesh surface and a second mesh surface which are identical in structure, and the edges of the first mesh surface and the second mesh surface are closed. The first net surface and the second net surface are oppositely arranged and are closed after being woven at the edges, so that the balloon woven net 1 forms a closed net structure. Typically, the first and second web surfaces have a small surface-to-surface spacing, even when attached together.

Further, the shape of the balloon woven mesh 1 is a diamond shape. The application is spindle-shaped, defining: a quadrilateral having a symmetry axis is called a spindle. The spindle shape is specifically, for example, a quadrangle formed by sequentially connecting A, B, D, C four end points, and two equal long sides AB and AC are formed; two equal short sides BD, CD, two diagonal lines AD, BC are perpendicular to each other.

In a particular embodiment, as shown in fig. 1, the balloon braided mesh 1 includes a distal end portion 11 and a proximal end portion 12. The collecting part 17 is arranged at the proximal end point of the balloon braided net 1, the distal end part 11 comprises a first distal end boundary 13 and a second distal end boundary 14, the proximal end part 12 comprises a first proximal end boundary 15 and a second proximal end boundary 16, the first distal end boundary 13 and the second distal end boundary 14 are connected at the distal end point of the balloon braided net 1, and the first proximal end boundary 15 and the second proximal end boundary 16 are connected at the collecting part 17 of the balloon device 10. The far end boundary I13 and the near end boundary I15 are connected between a far end endpoint and a near end endpoint to form the leftmost end of the balloon woven net 1, the far end boundary II 14 and the near end boundary II 16 are connected between the far end endpoint and the near end endpoint to form the rightmost end of the balloon woven net 1, two axes can be arranged from the balloon woven net 1, the far end endpoint to the near end endpoint of the balloon woven net 1 is an axis I, and the leftmost end to the rightmost end of the balloon woven net 1 is an axis II; the balloon woven net 1 is symmetrically distributed on two sides of the axis.

Further, the distance between the far end point and the near end point of the balloon mesh grid 1 can be 2 mm-8 mm, and the preferable distance is 4 mm-6 mm; the distance between the leftmost end and the rightmost end may be in the range of 2mm to 4mm, preferably 3 mm.

In the balloon device provided by the application, the traction piece 2 is selected from guide wires made of flexible metal wires. The pulling member 2 may be as desired, and in a particular embodiment, the pulling member 2 is selected from a guide wire. The length of the traction element 2 is 2 meters.

In the balloon device provided by the present application, the mesh tube 3 is woven from elastic metal wires. The elastic metal wire is a nickel-titanium alloy wire. The length of the mesh tube 3 is longer than the length of the outer rod 4, and in a specific embodiment, the outer diameter of the mesh tube 3 is slightly smaller than the inner diameter of the outer rod 4.

In the balloon device provided by the present application, the outer rod 4 is a rigid structure. The design ensures that the balloon device has good pushing performance and twisting control performance, so that the balloon can smoothly reach a diseased part.

In the balloon device provided by the present application, the balloon device further includes an operation portion 5, and the operation portion 5 includes a housing 57. The housing 57 is connected to the proximal end (end near the operator) of the outer rod 4, and the pulling member 2 extends into the housing 57 in the axial direction of the housing 57. Specifically, the housing 57 has a hollow structure. The housing 57 is, for example, a cylindrical body, the radial direction of the housing 57 means the diameter direction when the housing 57 is naturally placed, and the axial direction of the housing 57 means the direction of the central axis when the housing 57 is naturally placed. Normally, the housing 57 will be provided with an inlet 45 cooperating with the traction means 2, said inlet 45 communicating with the hollow structure of the housing 57.

Further, the operation portion 5 still includes the action bars 52, casing 57 lateral wall is equipped with the through-hole, the action bars 52 wear to penetrate the through-hole and including locating the first operation section in the casing 57 outside with radially extend into the inside second operation section of casing 57, the second of drawing piece 2 draws section 22 to extend into casing 57 and twine along the axial on the second operation section, the one end that first operation section was kept away from to the second operation section is equipped with screw thread portion 53, casing 57 lateral wall that the casing 57 through-hole is relative is equipped with screw thread butt joint portion 54 with screw thread portion 53 matched with. The threaded portion 53 is matched with the threaded butt joint portion 54, namely the threaded portion 53 can be screwed into and screwed out of the threaded butt joint portion 54, when the device is used, the first operation section is rotated manually, the second operation section can also rotate along with the first operation section, the threaded portion 53 can be screwed into the threaded butt joint portion 54, the traction piece 2 is driven to move towards the direction far away from the collection portion 17 along with the rotation of the second operation section, and the second traction section 22 of the traction piece 2 is wound on the second operation section more, so that the mesh pipe 3 is further driven to bend.

Further, the operating part 5 further comprises a knob 51, and the knob 51 is connected with one end of the first operating section away from the housing 57. The knob 51 is installed on the first operation section to facilitate the rotation operation.

Further, an inner groove 56 is provided in the housing 57 for receiving the second operating section into the inner groove 56.

Another aspect of the embodiment of the present application provides a balloon system, which includes a guiding component 6 and a balloon device according to the present application, wherein the balloon device is sleeved on the guiding component 6, and is matched with the guiding component 6.

Typically, the inner diameter of the guide member 6 is slightly larger than the outer diameter of the outer shaft 4, and the balloon mesh 1 is reciprocally movable in the guide member 6, as shown in fig. 9, and the balloon mesh 1 is either retracted into the guide member 6, or the balloon mesh 1 is extended out of the guide member 6, as shown in fig. 11. In one embodiment, the guide member 6 is selected from a catheter and may be a guide catheter. For example, in the case of structural heart disease, the balloon device is used in conjunction with an elongated flexible catheter to establish an intra-body delivery channel for a related lesion implantation device, and the balloon device can guide the elongated flexible catheter to more easily pass through a tortuous path of a human body and accurately reach a given position. Wherein, the guide assembly 6 is a flexible conduit with certain elasticity and certain rigidity.

The working process of the application is as follows:

in the embodiment of the balloon device specifically shown in fig. 3, the following steps may be used:

(1) the proximal end (the end close to the operator) of the traction piece in the balloon device is penetrated from one end of the guide assembly 6 and moves towards the other end along the inner cavity of the guide assembly 6 until the proximal end of the traction piece of the elongated traction piece 2 and one end of the outer rod 4 far away from the balloon woven net 1 penetrate out of the other end of the guide assembly 6, and the balloon woven net 1 is also arranged in the guide assembly 6 in a folded mode, as shown in fig. 9; in a folded arrangement state, the free end of the balloon woven mesh 1 can also partially extend out of the guide assembly 6, the balloon woven mesh 1 is of a flexible structure, and in a normal condition, if part of the balloon woven mesh 1 extends out of the guide assembly 6, human tissues cannot be damaged;

(2) sending the balloon mesh grid 1 and the guide assembly 6 into the inferior vena cava of a human body together, and moving upwards along the inferior vena cava until the balloon mesh grid reaches the right atrium;

(3) keeping the position of the outer rod 4, pulling the near end of the traction piece in the direction far away from the balloon woven net 1, tensioning the whole traction piece 2, and enabling the traction piece 2 close to one side of the gathering part 17 to drive the part of the mesh pipe 3 exposed out of the outer rod 4 to bend due to the fact that the traction piece 2 is attached to the pipe wall of the mesh pipe 3 and distributed in a crossed mode, so that the traction piece 2 further drives the balloon woven net 1 to bend towards the near end, the bending angle is controlled by the tensioning degree and can reach 90 degrees to the maximum degree until the balloon device is aligned with the tricuspid orifice of the heart;

(4) the balloon device together with the guide assembly 6 passes through the tricuspid orifice of the heart, and the position of the balloon device can be rotated through the outer rod 4 during the advancing process;

(5) continuing to adjust the angle of the balloon device by the method of step (3), arranging the balloon device in an upward direction, and continuing to advance the guide assembly 6 until passing through the pulmonary valve and into the pulmonary artery; in this step, the balloon-woven mesh 1 may be released from the guide member 6 as shown in fig. 11, and the morphological feature of the balloon-woven mesh 1 may be displayed on the ultrasound cardiovascular instrument to enhance the tracking and positioning effect of the distal end of the guide member 6.

In the embodiment of the metal balloon specifically shown in fig. 4, the following steps may be adopted in use:

(1) due to the addition of the operating portion 5, the following adjustments are made: the free end of the balloon woven mesh 1 enters the inner cavity of the guide assembly 6 from one end of the guide assembly 6, the operating part 5 is pushed, so that the outer rod 4 gradually enters the inner cavity of the guide assembly 6 until the free end of the balloon woven mesh 1 is arranged at the other end of the guide assembly 6, and at the moment, the part except the operating part 5 in the balloon device is basically accommodated in the inner cavity of the guide assembly 6;

(2) the balloon device and the guide assembly 6 are sent into the inferior vena cava of the human body together, and move upwards along the inferior vena cava until the balloon device reaches the right atrium;

(3) rotating the operating portion knob 51 causes the proximal end of the pulling element to be screwed to the operating rod 52, specifically: rotating the knob 51, winding the traction piece 2 on the second operation section of the operation rod 52, and as the number of winding turns of the traction piece 2 increases, as shown in fig. 10, the traction piece 2 gradually moves towards one end far away from the collection portion 17, so that the whole slender traction piece 2 is tensioned, and as the traction piece 2 is attached to the tube wall of the reticular tube 3 and is in cross distribution, the traction piece 2 close to one side of the collection portion 17 can drive the part of the reticular tube 3 exposed out of the outer rod 4 to bend, further drive the balloon woven mesh 1 to bend towards the near end, and the bending angle is controlled by the tensioning degree and can reach 90 degrees to the maximum until the balloon device is aligned with the tricuspid orifice of the heart;

(4) the balloon device and the guide assembly 6 pass through the tricuspid orifice of the heart, and the position of the balloon device can be rotated through the operation part 5 during the advancing process;

(5) continuously adjusting the angle of the balloon device by the steps in the step (3), arranging the balloon device to be upward in direction, and continuously advancing the guide assembly 6 until the balloon device passes through the pulmonary valve and enters the pulmonary artery; in this step, the balloon-woven mesh 1 may be released from the guide member 6 as shown in fig. 11, and the morphological feature of the balloon-woven mesh 1 may be displayed on the ultrasound cardiovascular instrument to enhance the tracking and positioning effect of the distal end of the guide member 6.

In conclusion, the accurate regulation and control of the curvature of the balloon braiding net 1 through the operation part 5 or directly through the near end of the traction wire is guaranteed. The balloon knitting net 1 has enough flexibility and restorability, and reduces the possibility that the guide wire damages the tissue of the lesion part. The outer rod 4 is a rigid structure, so that the balloon mesh grid 1 has good pushing performance and twisting control performance, the balloon mesh grid 1 can smoothly reach a diseased region, the morphological characteristics of the balloon mesh grid 1 can be displayed on a cardiovascular ultrasonic instrument, accurate positioning and tracking of a traction part such as a guide wire and a guide component 6 such as the head end of a catheter are facilitated in ultrasonic interventional therapy, and an intracardiac tract with multiple curvatures is facilitated, so that the operation difficulty and the damage to a patient are reduced.

Therefore, the application effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims (10)

1. The balloon device is characterized by comprising a balloon woven net (1), wherein the balloon woven net (1) comprises a collection part (17), and further comprises a reticular tube (3) and an outer rod (4) which are sequentially connected, the free end of the reticular tube (3) is connected with the collection part (17), a traction piece (2) is further arranged in the reticular tube (3) and the outer rod (4), the far end of the traction piece (2) is connected with the collection part (17), the extension direction of the far end of the traction piece is consistent with the axial direction of the reticular tube (3) and the axial direction of the outer rod (4), the traction piece (2) comprises a first traction section (21) corresponding to the reticular tube (3) and a second traction section (22) corresponding to the outer rod (4), the first traction section (21) is attached to the tube wall of the reticular tube (3), and the second traction section (22) is positioned in the outer rod (4), the proximal end of the second traction segment (22) is exposed to the outer rod (4).

2. A balloon device according to claim 1, wherein the balloon-knitted net (1) is a closed net structure knitted from elastic metal wires.

3. The balloon device according to claim 1, wherein the balloon-knitted mesh (1) comprises a first mesh surface and a second mesh surface of identical structure, the edges of the first mesh surface and the second mesh surface being closed.

4. A balloon device according to claim 1, characterized in that the balloon braiding mesh (1) is spindle-shaped.

5. The balloon device according to claim 1, characterized in that the traction means (2) are selected from guide wires; the guide wire is made of flexible metal wires.

6. A balloon device according to claim 1, characterized in that the mesh tube (3) is braided from elastic metal wires.

7. The balloon device according to claim 1, further comprising an operating portion (5), wherein the operating portion (5) comprises a housing (57), wherein the housing (57) is connected to the proximal end of the outer rod (4), and wherein the second traction section (22) of the traction member (2) extends into the housing (57) along an axial direction of the housing (57).

8. The balloon device according to claim 7, wherein the operating portion (5) further comprises an operating rod (52), the side wall of the housing (57) is provided with a through hole, the operating rod (52) penetrates through the through hole and extends into the housing (57) along the radial direction of the housing (57), the operating rod (52) comprises a first operating section arranged on the outer side of the housing (57) and a second operating section arranged in the housing (57), the traction member (2) is wound on the second operating section, one end of the second operating section, which is far away from the first operating section, is provided with a threaded portion (53), and a side wall of the housing (57) opposite to the through hole of the housing (57) is provided with a threaded abutting portion (54) matched with the threaded portion (53).

9. The balloon device according to claim 8, wherein the operating portion (5) further comprises a knob (51), the knob (51) being connected to an end of the first operating section remote from the housing (57); and/or an inner groove (56) matched with the second operation section is arranged in the shell (57).

10. A balloon system, comprising a guide assembly (6) and a balloon device according to any of claims 1-9, wherein the guide assembly (6) is externally fitted to the balloon device and the guide assembly (6) is fitted to the balloon device.

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