A spherical and cylindrical integrated airbag

Abstract

The present invention belongs to medical equipment and discloses a spherical and cylindrical integrated airbag for expansion and fixed support when entering the digestive tract. The invention is characterized in that a spherical airbag and a cylindrical airbag are provided on the same hose, and both the spherical airbag and the cylindrical airbag have expansion pipes in the same hose for communication and expansion by external gas / liquid supply.

Description

Technical Field

[0001] The invention belongs to the technical field of medical interventional equipment, and in particular relates to a spherical and cylindrical integrated air bag. Background Art

[0002] With the development of modern medical technology, diseases that were originally unable to directly obtain the cause and lesion conditions can now be examined with low or no impact on patients through existing medical equipment and the actual conditions of the corresponding parts of the patient's body can be accurately obtained. Among them, endoscopic retrograde pancreaticocholangiopancreatography is a modern medical interventional treatment method, which specifically refers to inserting a duodenoscope into the descending duodenum, finding the duodenal papilla, inserting a contrast catheter from the biopsy channel to the papilla opening, injecting contrast agent, and then taking an X-ray to display the pancreatic and bile ducts. Since ERCP does not require surgery, has little trauma, a short operation time, fewer complications than surgical operations, and greatly shortens hospitalization time, it is very popular with patients. In just a few decades, ERCP has achieved great results in clinical practice and has become an important treatment for pancreatic and biliary diseases today.

[0003] During ERCP surgery, one of the commonly used accessory instruments is the dilatation balloon. The bile duct dilatation balloon developed as an accessory medical device for endoscopes is used for intracavitary dilatation of bile and pancreatic duct and papillary sphincter stenosis. The dilatation balloon is a catheter-like medical device. The expandable balloon is fixed at the distal end of the catheter, and the catheter seat containing a 6% Luer connector is fixed at the proximal end of the catheter. Before use, the balloon is in a deflated and folded state. Generally, during surgery, the dilatation balloon is pushed to the stenosis along the endoscopic lumen under the guidance of a guidewire, and then the in vitro pressure device is connected to the end of the catheter to expand the stenosis through circumferential annular stress. The key to this operation is to be able to quickly and accurately reach and locate the stenosis, and during the dilatation process, the outer diameter of the balloon in the expanded state under pressure can reach the designed size, and can withstand the rated bursting pressure and fatigue requirements at a reliability of 95%-99%.

[0004] The current balloon dilatation catheter has a single-balloon structure, and the contrast fluid is only set at its end. This approach leads to various complex problems that limit the progress of the operation during the actual operation, especially when dealing with bile duct stones. Small stones can easily compress the tube wall during balloon dilation, and the single-balloon structure cannot solve the above problems. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a catheter with a two-type balloon structure, which can combine the respective advantages of the spherical balloon and the cylindrical balloon and reduce the risk of expansion.

[0006] The technical solution adopted by the present invention is:

[0007] In the first aspect, the present invention provides a spherical and cylindrical integrated airbag for expansion and fixation support when inserted into the digestive tract, characterized in that a spherical airbag and a cylindrical airbag are provided on the same hose, and both the spherical airbag and the cylindrical airbag have expansion pipes in the same hose for connection and expansion by external gas / liquid supply.

[0008] It should be noted that the airbag structure is a compression structure provided on the dilatation catheter, which expands by injecting fluid into the interior, thereby forming an enlarged end in the corresponding area, which can push out some foreign matter or expand and maintain a specific narrow area.

[0009] The structure of the present invention is a double-balloon catheter, with a spherical balloon at the end and a cylindrical balloon in the middle. In actual operation, since each balloon is an expansion channel that supplies expansion fluid independently, the spherical balloon at the front end will expand first and fit with the tissue surface at the corresponding position, thereby fixing the end of the entire catheter. The cylindrical balloon generally controls its expansion cross-sectional diameter, mainly for the expansion of narrow channels, so the cross-sectional size of the cylindrical balloon is significantly smaller than that of the spherical balloon.

[0010] The original single-balloon catheter structure can only complete one operation task. However, since this air column structure has a certain length, it will inevitably compress the tube wall due to some stone fragments during expansion. The spherical balloon at the end is used to push it away to avoid other influences.

[0011] In combination with the first aspect, the present invention provides a first embodiment of the first aspect, wherein the hose also has an independent contrast agent pipeline, and the contrast agent pipeline includes a front contrast agent channel with an outlet at the front end of the spherical airbag and a middle contrast agent channel with an outlet between the spherical airbag and the cylindrical airbag.

[0012] It is worth noting that originally, when using the expansion balloon, contrast agent would be injected through the outlet at the end, so that external equipment can display the internal state of the body cavity. However, due to the end setting, the balloon cannot inject contrast agent to the rear after it is fully expanded. In the present invention, a separate contrast agent injection port is also set between the two balloons, and an independent pipeline is used with the front outlet, so that contrast agent can be injected into different areas according to needs to meet different needs during surgery.

[0013] In combination with the first aspect, the present invention provides a second implementation of the first aspect, wherein the hose further comprises an independent main pipeline, and the main pipeline comprises a guide wire for guiding.

[0014] The entire balloon catheter is made of an elastic soft material. In order to enable it to enter the target smoothly, a hard structure is required inside or at the rear end to provide better pushing performance. In the prior art, a pipe structure with a certain hardness is used on the catheter at the rear of the balloon, which has good anti-kink performance. The method adopted in this embodiment is to set a guide wire inside the hose, and set its end to a soft head structure to avoid scratching the tube wall during the pushing process.

[0015] The guide wire consists of two parts, the inner and outer parts. The cavity in the center of the spring is the interior of the guide wire, which is equipped with a straight and hard steel wire core. According to the needs, the material can be stainless steel wire, nickel-titanium memory alloy, or both. The front end of the steel wire core gradually becomes thinner, and the tip of the very thin steel wire core is welded to the end of the spring, and then the tail end of the steel wire core is welded to the tail end of the spring and polished smooth. The outer layer of the ordinary guide wire is made of high-quality stainless steel wire wound on a spring lathe. This metal material can withstand repeated bending and will not break under a certain force.

[0016] In combination with the second embodiment of the first aspect, the present invention provides a third embodiment of the first aspect, wherein the guide wire in the main pipeline has an anti-corrosion coating on the outside, and the end of the guide wire is fixedly connected to the tip of the hose insertion end;

[0017] The space in the main tube is also used to conduct contrast agent, thereby forming a front contrast agent channel opening at the tip.

[0018] It is worth noting that the internal space of the hose in the present invention is provided with multiple independent pipes, and each pipe has a different function, so they are separated from each other in the hose. However, the guide wire is the main hose pushing structure, so it is necessary to set the guide wire in the middle of the hose, and the main pipe where the guide wire is located has a better connection stability with the inner wall of the hose relative to other pipes. At the same time, in order to improve the utilization rate, the inner diameter of the main pipe is enlarged so that it can be used as one of the contrast medium pipes and share a pipe with the guide wire.

[0019] Since it is necessary to share a pipeline with the contrast agent, the anti-corrosion coating on the surface of the guide wire described in the present invention can ensure that it maintains good corrosion resistance in a complex environment. Similarly, a polymer material (mainly polyurethane or PTFE and fluorine material) with better tissue compatibility and blood compatibility can also be coated on the surface of the metal wire. This method of using a polymer metal wire not only replaces the hard contact effect of the previous spring coil on the inner wall of the lumen, but also can greatly reduce the friction force on the surface of the guide wire, and can also enhance the visibility of the entire guide wire operation process by coating stripes on the polymer surface or adding a developing material (especially a polyurethane material) to the polymer.

[0020] In combination with the first embodiment of the first aspect, the present invention provides a fourth embodiment of the first aspect, wherein the contrast agent pipeline is a hose structure with an elliptical cross-section, the expansion pipeline is a structure with a circular cross-section, and a reinforcing net is provided inside the expansion pipeline wall. The contrast agent is a liquid and is a one-way channel, so the inner diameter of the pipeline can be expanded as much as possible so that the contrast agent can be quickly and massively injected when needed. However, since the expansion pipeline is a two-way pipeline, it needs to be injected / recovered back and forth during surgery. At this time, it is necessary to ensure the patency of the pipeline, so it is necessary to have a certain structural strength to ensure that the deformation degree of the pipeline is small when subjected to a certain external pressure, so as to avoid affecting the recovery efficiency when recovering the expansion medium, so that the airbag cannot be reduced to a certain volume, thereby affecting subsequent operations.

[0021] In combination with the first aspect and the first to fourth embodiments thereof, the present invention provides a fifth embodiment of the first aspect, wherein the hose is provided with a plurality of ports at an end away from the insertion end.

[0022] In combination with the first aspect and its first to fourth embodiments, the present invention provides a sixth embodiment of the first aspect, wherein the spherical airbag has two ends in the length direction of the hose, either end having a fixed head for constraint and fixation, and the other end having an airbag clip, wherein the airbag clip is pulled toward the fixed head when the spherical airbag expands, and the airbag clip continuously applies force to the connected end of the spherical airbag to change to a deflated and folded state.

[0023] In combination with the sixth embodiment of the first aspect, the present invention provides a seventh embodiment of the first aspect, wherein the airbag clip is a stretchable elastic material, one end of which is airtightly connected to the end of the spherical airbag, and the other end is connected to the outer wall of the hose to form an integrated structure.

[0024] In combination with the seventh embodiment of the first aspect, the present invention provides an eighth embodiment of the first aspect, wherein the hose is provided with a hard slideway, and the airbag clip slides in cooperation with the slideway, with one end being airtightly connected to the end of the spherical airbag, and the other end being connected to the hose via an elastic member.

[0025] The beneficial effects of the present invention are:

[0026] The present invention is provided with at least two kinds of airbags, which can integrate the advantages of two kinds of airbags on the same catheter, complete the corresponding operations in a single interventional treatment process, and provide better flexibility. At the same time, by providing independent pipelines for each airbag and contrast agent outlet, injection and expansion can be performed according to needs. Since an independent contrast agent outlet is provided between the two balloons, the contrast agent can be injected behind the spherical airbag, and more structural effects can be seen compared to the prior art. The spherical airbag can also assist the cylindrical airbag, provide a positioning effect when it expands, and can push away some small stones to avoid compression of the tube wall when the cylindrical airbag expands. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a side view of the spherical and cylindrical airbags of the present invention when fully expanded;

[0028] Figure 2 is a first axial schematic diagram of the spherical and cylindrical airbags of the present invention when fully expanded;

[0029] Figure 3 is a second axial schematic diagram of the spherical and cylindrical airbags of the present invention when fully expanded;

[0030] Figure 4 The present invention Figure 3 A is a magnified schematic diagram of the part in the middle;

[0031] Figure 5 is a first axial schematic diagram of the spherical airbag of the present invention in an unexpanded state;

[0032] Figure 6 is a side view of the spherical airbag of the present invention in an unexpanded state;

[0033] Figure 7 The present invention Figure 6 A magnified schematic diagram of the part B in the middle;

[0034] Figure 8 is a schematic diagram of the internal wire tube of the entire expander of the present invention;

[0035] Fig. 9 is a cross-sectional schematic diagram of the expander pipeline in Example 1 of the present invention;

[0036] Fig.10 It is a cross-sectional schematic diagram of the expander pipeline in Example 2 of the present invention.

[0037] In the figure: 1-hose, 2-spherical airbag, 3-cylindrical airbag, 4-port, 5-front liquid outlet, 6-middle liquid outlet, 7-elastic part, 8-fixed head, 9-airbag clip, 10-slide, 11-guidewire port, 12-guidewire, 13-main pipeline, 14-contrast agent pipeline, 15-expansion pipeline; QQ'-front contrast agent channel, RR'-spherical airbag channel, SS'-guidewire channel, TT'-middle contrast agent channel, UU'-cylindrical airbag channel. DETAILED DESCRIPTION

[0038] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] In the description of this application, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0043] In addition, if the terms "horizontal" or "vertical" appear in the description of this application, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0045] Embodiment 1:

[0046] This embodiment discloses a spherical and cylindrical integrated balloon for use in ERCP, such as Figure 1-Figure 5 , Figure 8 As shown, a catheter structure is shown in the figure, including a hose 1 as a main structure. One end of the hose 1 is a soft tube head structure, and a spherical airbag 2 and a cylindrical airbag 3 are arranged near the soft tube head structure.

[0047] Figure 1-Figure 4 The two balloons are shown in the expanded state. The spherical balloon 2 near the end has a larger cross-sectional size, while the cylindrical balloon 3 has a larger length size. When the catheter is inserted along the digestive tract, the spherical balloon 2 at the end will be expanded first to push away some small stones first, so as to avoid some small stones from pressing the tube wall when the cylindrical balloon 3 is expanded later. At the same time, because the spherical balloon 2 is expanded first, it can not only expand the target area, but also is mainly used to fix the entire catheter.

[0048] It can also be seen in the figure that openings are provided at different positions of the hose 1, including a front liquid outlet 5 provided at the front end of the spherical airbag 2 and a middle liquid outlet 6 provided between the two airbags. Two independent pipes are provided in the hose 1, namely, contrast medium pipes 14 connecting the two liquid outlets.

[0049] The airbag in this embodiment also has an independently arranged expansion pipe in the hose 1, which is used to connect to an external device to provide the flow of expansion medium. The so-called expansion medium is gas, which is injected into the corresponding airbag by an external high-pressure air gun for expansion, and there are many different ways to deflate it. Since the medium in this embodiment is gas, the gas in the airbag is also extracted outward by an external device through the expansion pipe.

[0050] The hose 1 in this embodiment is a soft structure. In order to achieve better pushing performance, a main pipe 13 is provided in the middle of the hose 1. A guide wire 12 connected to a soft tube head is provided in the main pipe 13. The operator holds the guide wire 12 at one end of the hose 1 to operate and push the entire hose 1 inward so that the airbag can reach the target area.

[0051] At the other end of the hose 1, a plurality of independently bifurcated ports 4 are provided, specifically including two ports 4 connected to the expansion pipe, two ports 4 connected to the contrast agent pipe 14, and the guide wire 12 port 114. As can be seen in the figure, a plurality of independent pipeline structures are provided in the hose 1, which are divided into the front contrast agent channel QQ', the spherical airbag channel RR', the guide wire 12 channel, the middle contrast agent channel TT' and the cylindrical airbag channel UU'. Each channel is provided with an opening at a corresponding position of the hose 1, and a one-way flap is provided on the opening of the two liquid diversion channels. Only when the internal liquid pressure is greater than the external environmental pressure, the one-way flap will open outward to allow the contrast agent injected inside to flow out.

[0052] It is worth noting that, since air is used as the expansion medium in this embodiment and the gas needs to be extracted outward during deflation, the expansion pipe in the hose 1 adopts a reinforced pipe with certain ductility and bending properties, whose cross-section remains circular and is provided with a reinforcing braided layer on the outside or inside to prevent the pipe from being closed due to external pressure and to keep the channel unobstructed during use.

[0053] The entire structure is as described above. During operation, all ports 4 are first connected to corresponding external devices, wherein the expansion conduit port 4 is connected to an external contrast agent injection device, and the expansion conduit is connected to an external air compressor. One end of the soft tube head of the hose 1 is inserted along the patient's digestive tract, and continuously deepened so that the spherical airbag 2 at the end can reach the corresponding position of the bile duct target area. At this time, the spherical airbag 2 is first expanded for positioning, and small stones in the digestive tract or other bile ducts can be pushed away at the same time. Then the cylindrical airbag 3 is expanded, and contrast agent can be injected synchronously at this time, so that contrast agent is filled outside and between the two airbags. Check whether the airbag is in the designed target position through external imaging equipment, and further dispose according to the situation inside the bile duct.

[0054] Embodiment 2:

[0055] This embodiment is optimized on the basis of the above-mentioned embodiment 1, wherein since the entire hose 1 has multiple independent pipelines, and each pipeline has different fluids, it is inevitable that bending will occur when it is pushed in the body, and the squeezing between the pipelines will also affect the delivery of the fluid. Moreover, this independently arranged multi-pipeline structure will cause the cross-sectional size of the outermost hose 1 to be larger and the structural strength to be weak, which is easy to be twisted when pushed in the body, further compressing and occupying the space in the hose 1.

[0056] In order to improve the above problems, this embodiment Fig.10 As shown in the figure, it can be seen that the entire hose 1 is an integrated structure, and multiple independent chambers are provided according to needs. The figure shows four pipes formed by the inner wall of the hose 1 extending inward, two of which are expansion pipes, and the other two are contrast medium pipes 14, and they are arranged at intervals to ensure uniform force.

[0057] The main conduit 13 in the middle is an independent structure formed by extending the outer walls of the above four conduits. A guide wire 12 is arranged in the main conduit 13, which can also be regarded as a guide wire channel SS'. Since the cross section of the main conduit 13 is larger than that of the guide wire 12, the main conduit 13 also has an end at one end of the hose 1, which is used to inject contrast agent into the main conduit 13, and an independent opening is also provided at the rear end of the cylindrical airbag 3 to communicate with the main conduit 13, and the contrast agent injected into the main conduit 13 is injected into the corresponding part through the opening.

[0058] Furthermore, in order to facilitate the flexible setting of the entire catheter in this embodiment as a modular structure, the hose 1 is a silicone tube with a relatively long length, which can be cut according to needs. When cut to an appropriate length, a guide wire 12 is inserted in the middle part, and a soft tube head is provided at one end through which the guide wire 12 passes, and the end head is formed by sealing with thermoplastic or other adhesive.

[0059] The spherical airbag 2 and the cylindrical airbag 3 are both independent structures, which are slidably mounted on the hose 1 and slid to the corresponding position according to the needs, and are also fixed and bonded with hot melt adhesive. The airbag has a puncture head, which is inserted into the corresponding pipe to achieve communication, thereby realizing the expansion / deflation state control of the airbag.

[0060] Similarly, a puncture port is directly provided at a corresponding position of the hose 1, and the liquid outlet of the contrast agent can be customized according to demand. This disposable dilatation catheter can be adjusted according to the actual situation of each patient and has good adaptability.

[0061] Embodiment 3:

[0062] This embodiment is optimized and limited based on the above embodiment 1. Figure 6-Figure 7 As shown, with regard to the gas expansion method, since the gas cannot be directly discharged into the body and the internal environment is complex, the gas in the airbag cannot be discharged outward under a negative pressure state formed at one end. Therefore, when the airbag needs to be deflated, the airbag cannot return to its original state. It is also possible that when the external equipment has formed a vacuum negative pressure state, the gas inside the airbag cannot be effectively discharged in a timely manner only through gas diffusion movement.

[0063] In order to solve the above problems, the structure of the airbag is optimized and adjusted in this embodiment. Taking the spherical airbag 2 as an example, Figure 6 The spherical airbag 2 is in a deflated state. The spherical airbag is different from the existing multi-petal folding method. The material of the spherical airbag 2 has a certain degree of ductility. The initial state is double-layered and directly attached to the surface of the hose 1. One end of the spherical airbag 2 is fixed to the surface of the hose 1 through a fixed head 8, and the other end is sleeved on the surface of the hose 1 through an airbag clip 9. The airbag clip 9 is movably connected to the surface of the hose 1, which can drive one end of the spherical airbag 2 to slide on the hose 1.

[0064] That is to say, when the material of the spherical airbag 2 is inflated, its surface material will first be stretched and expanded, but due to the limited extension, after being continuously subjected to gas pressure, the material will pull the airbag clip 9 on one side to slide, so that the airbag material originally attached to the surface of the hose 1 extends outward, and a good expansion range can be obtained without affecting the strength of the material itself. And different from the multi-petal folding method in the prior art, by increasing its surface area in the length direction, it can also achieve the same or similar expansion range as the existing airbag.

[0065] At the same time, in order to facilitate the sliding of the airbag clip 9, a hard slideway 10 is provided at the corresponding position of the hose 1. The slideway 10 has a smooth surface. When the airbag clip 9 fits the slideway 10, it can slide under a certain tension, and the sliding effect will not be affected by the deformation of the hose 1. Both ends of the slideway 10 have limit rings, which can limit the sliding range of the airbag clip 9 to prevent it from being too close to or too far away from the fixed head 8, thereby affecting the stability of the airbag expansion.

[0066] Furthermore, in order to provide a better recovery effect for the airbag when it is deflated, this embodiment is provided with an elastic member 7 on the side of the airbag clip 9 away from the fixed head 8. The elastic member 7 is always in a stretched state, which can allow the airbag clip 9 to always slide in the direction away from the fixed head 8. When there is no gas inside the spherical airbag 2, the elastic member 7 can ensure that the airbag material is tightly attached to the surface of the hose 1 or the slide 10, ensuring that it will not affect the insertion of the catheter during the pushing process. At the same time, when the airbag is evacuated from the expanded state, an inward pressure can also be always provided to the airbag to improve the exhaust efficiency. Compared with the structure that only exhausts air from the outside, the airbag can be restored to its initial state in a faster time, and the volume after expansion can be reduced as much as possible to avoid affecting the process of pulling out the catheter.

[0067] It is worth noting that the spherical airbag 2 in this embodiment is a double-layer structure and an independent cavity. Its two ends are sealed by the fixing head 8 and the airbag clip 9. The activity of the airbag clip 9 will not have any effect on the airtightness. Therefore, when the airbag clip 9 slides on the hose 1, there is no need to consider its airtightness.

[0068] The present invention is not limited to the above optional implementations, and anyone can derive other various forms of products under the enlightenment of the present invention. The above specific implementations should not be understood as limiting the scope of protection of the present invention. The scope of protection of the present invention should be based on the definition in the claims, and the description can be used to interpret the claims.

Claims

1. A spherical and cylindrical integrated airbag for digestive tract penetration, expansion, fixation and support, characterized by: A spherical airbag (2) and a cylindrical airbag (3) are provided on the same hose (1), and the spherical airbag (2) and the cylindrical airbag (3) are both provided with an expansion conduit (15) in the same hose (1) for being connected and expanded by external gas / liquid supply; The hose (1) also has an independent contrast medium pipeline (14), and the contrast medium pipeline (14) includes a front contrast medium channel (QQ') whose outlet is at the front end of the spherical airbag (2) and a middle contrast medium channel (TT') whose outlet is between the spherical airbag (2) and the cylindrical airbag (3); The hose (1) also has an independent main pipeline (13) in it, and the main pipeline (13) has a guide wire for guiding; The spherical airbag (2) has two ends in the length direction of the hose (1), one end of which has a fixed head (8) for restraint and fixation, and the other end has an airbag clip (9). When the spherical airbag (2) expands, the airbag clip (9) is pulled toward the fixed head (8) and continuously applies force to the connected end of the spherical airbag (2) to change to a deflated and folded state through the airbag clip (9).

2. A spherical and cylindrical integrated airbag according to claim 1, characterized in that: The guide wire in the main pipeline (13) has an anti-corrosion coating on the outside, and the end of the guide wire is fixedly connected to the tip of the insertion end of the hose (1); The space inside the main pipe (13) is also used to conduct contrast agent, thereby forming a front contrast agent channel (QQ') opening at the tip.

3. The spherical and cylindrical integrated airbag according to claim 1, characterized in that: The contrast agent pipeline (14) is a hose structure with an elliptical cross-section, the expansion pipeline (15) is a circular cross-section structure, and a reinforcing net is provided inside the wall of the expansion pipeline (15).

4. A spherical and cylindrical integrated airbag according to any one of claims 1 to 3, characterized in that: The hose (1) is provided with a plurality of ports at an end away from the insertion end.

5. The spherical and cylindrical integrated airbag according to claim 1, characterized in that: The airbag clip (9) is made of a stretchable elastic material, one end of which is airtightly connected to the end of the spherical airbag (2), and the other end of which is connected to the outer wall of the hose (1) to form an integrated structure.

6. The spherical and cylindrical integrated airbag according to claim 1, characterized in that: The hose (1) has a hard slideway (10), and the airbag clip (9) slides in cooperation with the slideway (10), with one end being airtightly connected to the end of the spherical airbag (2), and the other end being connected to the hose (1) via an elastic member (7).

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