A locking mechanism and a detachable balloon

Abstract

The present invention discloses a locking mechanism and a detachable balloon, belonging to the technical field of medical devices, which includes a mounting base, a locking joint and a release wire; the mounting base includes a plugging end and a mounting end, the plugging end is provided with a plugging hole and a wire blind hole, the inner wall of the plugging hole is provided with a limiting groove and an embedding groove, and the embedding groove communicates with the wire blind hole; the locking joint includes a connecting end and a fixed end, the connecting end is provided with a plug, the fixed end is provided with a wire channel, the plug is provided with a retraction groove and a resilient piece, the resilient piece is embedded in the retraction groove under the action of elasticity, the resilient piece is provided with a limiting tooth and an embedding piece, the embedding piece is provided with a wire through hole, the wire through hole can correspond to the wire blind hole, and the limiting tooth can be embedded in the limiting groove; the release wire is used to pass through the wire channel, the wire through hole and the wire blind hole. The mounting base and the locking joint can be locked and disengaged as needed, so that the injection balloon can be adjusted in position before detachment, solving the problem that the traditional detachable balloon cannot be adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a locking mechanism and a detachable balloon. Background Art

[0002] Occlusion of the parent artery (the artery carrying an aneurysm) is an important surgical method for treating intracranial aneurysms clinically. It is achieved by implanting interventional embolization materials such as coils and detachable balloons into the aneurysm within the parent artery, thereby occluding the lumen of the aneurysm, isolating the blood supply of the aneurysm, and causing the aneurysm to gradually embolize and atrophy, so as to achieve the purpose of treatment.

[0003] Since the coil is made of wire, it cannot effectively fill the entire aneurysm cavity, and cannot achieve the purpose of completely isolating the blood flow within the cavity. Especially when the aneurysm is large, it is more difficult to completely occlude the aneurysm cavity, and multiple coils need to be implanted, the surgical operation is complex, and excessive packing will also increase the risk of aneurysm rupture. Although the detachable balloon can better fill the aneurysm cavity, there is a common problem in the detachable balloons known to the inventor: since the balloon and the injection catheter cannot be locked, that is, the injection catheter can only carry the balloon to move unidirectionally in the blood vessel and cannot carry the balloon to retreat through the injection catheter. When the implantation position of the balloon is inaccurate, it cannot be adjusted again. Summary of the Invention

[0004] The purpose of the present invention is to solve the above technical problems, and provide a locking mechanism and a detachable balloon. Through the mutual cooperation of the mounting base, the locking joint, the resilient sheet and the release wire, the mounting base and the locking joint can be locked and disengaged as needed. When the first component mounted on the mounting base and the second component fixed to the locking joint adopt an injection balloon and a catheter assembly respectively, the position can be adjusted before the injection balloon is released, ensuring that the injection balloon is accurately placed and filled in the aneurysm cavity of the aneurysm, solving the problem that the traditional detachable balloon can only move unidirectionally in the blood vessel and cannot be adjusted, and the catheter assembly can be selectively withdrawn after releasing the injection balloon or without releasing the balloon, thus combining the functions of a detachable balloon and a conventional balloon.

[0005] To achieve the above purpose, the present invention provides the following solution: The present invention discloses a locking mechanism, including a mounting base, a locking joint and a release wire;

[0006] The mounting base includes a plugging end and a mounting end for mounting the first component. The plugging end is provided with a plugging hole and a wire drawing blind hole. The inner wall of the plugging hole is provided with a limiting groove and an embedding groove on the same side. The limiting groove is located between the embedding groove and the mounting end, and the embedding groove communicates with the wire drawing blind hole;

[0007] The locking joint includes a connecting end and a fixing end for fixing to a second member. An insertion joint for inserting into the insertion hole is provided on the connecting end. A wire drawing channel is provided on the fixing end, and the wire drawing channel penetrates from the fixing end to the connecting end. The wire drawing channel corresponds to the wire drawing blind hole in position. A retraction groove and a resilient piece are provided on the insertion joint. The retraction groove corresponds to the limit groove. The resilient piece is fitted into the retraction groove under elastic action. A limit tooth and an insertion piece capable of extending into the embedding groove are provided on the resilient piece. A wire drawing through hole is provided on the insertion piece, and the wire drawing through hole can correspond to the wire drawing blind hole when the insertion piece extends into the embedding groove. The limit tooth can be embedded in the limit groove when the wire drawing through hole corresponds to the wire drawing blind hole;

[0008] The release wire is used to sequentially pass through the wire drawing channel, the wire drawing through hole, and the wire drawing blind hole.

[0009] Preferably, the insertion joint is a conical head, and the insertion hole is a conical hole.

[0010] Also disclosed is a releasable balloon, which includes an injection balloon, a catheter, a catheter guide wire tube, and the above-mentioned locking mechanism. The injection balloon is installed on the installation end of the installation base of the locking mechanism. The catheter guide wire tube is located inside the catheter. Both the catheter and the catheter guide wire tube are fixedly connected to the fixing end of the locking joint of the locking mechanism.

[0011] Preferably, an injection tube is further included. An injection port is provided on the injection balloon; an injection hole is provided on the insertion end, and the injection hole penetrates to the installation end. The injection hole is communicated with the injection port, and a one-way valve is provided in the injection hole; a liquid delivery hole is provided on the fixing end, and the liquid delivery hole penetrates to the connecting end. The liquid delivery hole corresponds to the injection hole; the injection tube can extend into the injection hole from the liquid delivery hole.

[0012] Preferably, the one-way valve includes a check washer and a limit washer fixedly connected coaxially. The check washer is close to the injection balloon. An opening and closing hole is provided on the check washer, and an elastic flap for opening and closing is provided in the opening and closing hole. The opening and closing hole is coaxially arranged with the check washer. The limit washer is attached to the check washer. A water passing hole is provided on the limit washer, and the water passing hole is coaxially arranged with the opening and closing hole. The aperture of the water passing hole is smaller than that of the opening and closing hole.

[0013] Preferably, the water passing hole is a conical hole. The small diameter end of the conical hole is close to the opening and closing hole, and the large diameter end of the conical hole communicates with the injection hole. An annular groove is provided at one end of the check washer away from the limit washer, and the inner ring of the annular groove is connected to the elastic flap.

[0014] Preferably, the liquid injection balloon includes a double-membrane body and a balloon guide wire tube. The inner membrane of the double-membrane body is fixedly connected to the balloon guide wire tube. The outer membrane and the inner membrane of the double-membrane body are both fixedly connected to the installation base, and there is a spacing between the outer membrane and the inner membrane for forming the liquid injection port.

[0015] Preferably, an annular port communicating with the liquid injection hole is provided on the installation end, and the annular port communicates with the liquid injection port.

[0016] Preferably, a balloon guide wire tube hole communicating with the insertion hole is provided on the installation end, a catheter guide wire tube hole penetrating through the plug connector is provided on the fixed end, the catheter guide wire tube hole corresponds to the position of the balloon guide wire tube hole, the catheter guide wire tube is fixedly connected in the catheter guide wire tube hole, and the balloon guide wire tube can be inserted into the catheter guide wire tube.

[0017] Preferably, a fixing piece is provided on the resilient piece, the fixing piece is fixed on the plug connector, and a guide wire tube through hole corresponding to the catheter guide wire tube hole is provided on the fixing piece.

[0018] The present invention has achieved the following technical effects compared with the prior art:

[0019] In the present invention, after the release wire is sequentially passed through the wire drawing channel, the embedding piece and the wire drawing blind hole, the embedding piece can be pulled into the embedding groove, so as to pull the resilient piece out of the retraction groove, and the limiting teeth are embedded in the limiting groove, so as to lock the installation base and the locking joint in the axial and circumferential directions, thereby locking the first component and the second component. When it is necessary to separate the first component and the second component, the release wire is pulled out, and the resilient piece will rebound and re-embed in the retraction groove under the elastic action, and the limiting teeth will disengage from the limiting groove, thereby disconnecting the lock between the installation base and the locking joint and completing the unlocking between the first component and the second component. When the first component and the second component are respectively a liquid injection balloon and a catheter assembly, the position of the liquid injection balloon can be arbitrarily adjusted before the liquid injection balloon and the catheter assembly are released, ensuring that the liquid injection balloon accurately enters the tumor body, and the catheter assembly can be selectively withdrawn with or without releasing the liquid injection balloon, so that the liquid injection balloon has the functions of both a release balloon and a conventional balloon. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1Schematic cross-sectional structure diagram of the detachable balloon in the embodiment of the present invention;

[0022] Figure 2 is Figure 1 partial enlarged view;

[0023] Figure 3 Schematic cross-sectional structure diagram of the double membrane capsule and the mounting base in the embodiment of the present invention;

[0024] Figure 4 Schematic cross-sectional structure diagram of the double membrane capsule and the mounting base in the embodiment of the present invention;

[0025] Figure 5 Schematic cross-sectional structure diagram of the locking joint in the embodiment of the present invention;

[0026] Figure 6 Schematic three-dimensional structure diagram of the locking joint in the embodiment of the present invention;

[0027] Figure 7 Schematic top three-dimensional structure diagram of the one-way valve in the embodiment of the present invention;

[0028] Figure 8 Schematic bottom three-dimensional structure diagram of the one-way valve in the embodiment of the present invention;

[0029] Figure 9 Schematic cross-sectional view of the detachable balloon before the double membrane capsule is detached in the embodiment of the present invention;

[0030] Figure 10 Schematic cross-sectional view of the detachable balloon when the double membrane capsule is detached in the embodiment of the present invention;

[0031] Figure 11 Schematic cross-sectional view of the detachable balloon after the double membrane capsule is detached in the embodiment of the present invention;

[0032] Figure 12 Schematic structure diagram of the double membrane capsule and the mounting base after being disconnected in the embodiment of the present invention.

[0033] Explanation of reference numerals:

[0034] 1. Double membrane capsule; 2. Balloon guide wire tube; 3. Mounting base; 4. Locking joint; 5. Catheter; 6. Catheter guide wire tube; 7. Liquid injection tube; 8. Rebound piece; 9. One-way valve; 10. Release wire;

[0035] 101. Inner membrane; 102. Outer membrane;

[0036] 301. Insertion hole; 302. Wire drawing blind hole; 303. Limiting groove; 304. Embedding groove; 305. Liquid injection hole; 306. Balloon guide wire tube hole; 307. Annular opening;

[0037] 401. Plug connector; 402. Drawing channel; 403. Retraction groove; 404. Conduit guide wire hole; 405. Liquid delivery hole;

[0038] 801. Embedded piece; 802. Limiting tooth; 803. Fixed piece;

[0039] 901. Check washer; 902. Limiting washer; 903. Elastic flap; 904. Water passing hole; 905. Annular groove. Detailed implementation manner

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] The purpose of the present invention is to provide a locking mechanism and a detachable balloon to solve the problems existing in the prior art. Through the mutual cooperation of the mounting base, the locking joint, the spring-back piece and the release wire, the mounting base with the first component installed and the locking joint fixed to the second component can be locked and disengaged as needed. When the first component and the second component are respectively a liquid injection balloon and a catheter assembly, the position adjustment of the liquid injection balloon can be realized by using the catheter assembly, ensuring that the liquid injection balloon is accurately placed and filled in the tumor cavity of the tumor, and realizing the problem that the traditional detachable balloon can only move unidirectionally in the blood vessel and cannot be adjusted.

[0042] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0043] Embodiment 1

[0044] This embodiment provides a locking mechanism, as Figures 1 to 12 shown, including a mounting base 3, a locking joint 4 and a release wire 10.

[0045] The mounting base 3 includes a plug end and a mounting end, and the mounting end is used for installing the first component. The plug end is provided with a plug hole 301 and a wire drawing blind hole 302. The inner wall of the plug hole 301 is provided with a limiting groove 303 and an embedding groove 304, and the limiting groove 303 and the embedding groove 304 are on the same side. The limiting groove 303 is located between the embedding groove 304 and the mounting end, and the embedding groove 304 communicates with the wire drawing blind hole 302.

[0046] The locking joint 4 includes a connecting end and a fixed end, and the fixed end is used to be fixed to the second component. An insertion joint 401 is provided on the connecting end, and the insertion joint 401 is used to be inserted into the insertion hole 301. A wire drawing channel 402 is provided on the fixed end, and the wire drawing channel 402 penetrates from the fixed end to the connecting end. The wire drawing channel 402 is located beside the insertion joint 401. The wire drawing channel 402 can be a through hole or a groove. The wire drawing channel 402 corresponds to the wire drawing blind hole 302 in position. A retraction groove 403 and a resilient piece 8 are provided on the insertion joint 401, and the retraction groove 403 corresponds to the limit groove 303. The resilient piece 8 is fitted into the retraction groove 403 under the elastic action. An insertion piece 801 and a limit tooth 802 are provided on the resilient piece 8. The insertion piece 801 can extend into the insertion groove 304. A wire drawing through hole is provided on the insertion piece 801, and the wire drawing through hole can correspond to the wire drawing blind hole 302 when the insertion piece 801 extends into the insertion groove 304. The limit tooth 802 can be embedded in the limit groove 303 when the wire drawing through hole corresponds to the wire drawing blind hole 302.

[0047] The release wire 10 is used to sequentially pass through the wire drawing channel 402, the wire drawing through hole, and the wire drawing blind hole 302, so as to pull the insertion piece 801 into the insertion groove 304, pull the resilient piece 8 out of the retraction groove 403, and make the limit tooth 802 embedded in the limit groove 303, so as to stably connect between the mounting base 3 and the locking joint 4, lock the first component and the second component. When it is necessary to separate the first component and the second component, the release wire 10 is pulled out. When the release wire 10 disengages from the wire drawing blind hole 302 and the wire drawing through hole, the resilient piece 8 will rebound under the elastic action and re-embed in the retraction groove 403, and the limit tooth 802 will disengage from the limit groove 303, so as to disconnect the lock between the mounting base 3 and the locking joint 4 and complete the unlocking between the first component and the second component.

[0048] The first component and the second component are any two cooperating articles that need to be locked and released, such as a liquid injection balloon (the first component) and a catheter assembly (the second component), or a coil (the first component) and a catheter assembly (the second component). The liquid injection balloon is installed at the installation end of the mounting base 3, the catheter assembly is fixed to the fixed end of the locking joint 4, the release wire 10 passes through the catheter assembly, and then penetrates into the wire drawing channel 402, the insertion piece 801, and the wire drawing blind hole 302. First, the liquid injection balloon and the catheter assembly are locked. Then, the liquid injection balloon is driven by the catheter assembly and sent into the artery. According to the need, the position of the liquid injection balloon is adjusted to make the liquid injection balloon accurately enter the tumor cavity of the tumor body. After filling with liquid, the release wire 10 is pulled out to unlock the liquid injection balloon and the catheter assembly, and then the catheter assembly is pulled out, and the liquid injection balloon is left in the tumor cavity of the tumor body.

[0049] In an embodiment, such as Figures 1 to 12As shown, the plug connector 401 is a conical head, and the tip of the conical opening is away from the connection end of the locking joint 4. The retraction groove 403 extends from the tip of the plug connector 401 towards the thick and round end. The plug hole 301 is a conical hole, and the tip of the conical hole is away from the plug end of the mounting base 3.

[0050] In one embodiment, as Figures 1 to 12 shown, the resilient piece 8 is made of an elastic material and is in a retracted state in its natural state, retracted within the retraction groove 403. The cantilever of the release buckle is provided with a toothed protrusion for engaging with the toothed groove on the inner wall of the balloon seat.

[0051] Embodiment 2

[0052] This embodiment provides a detachable balloon. As Figures 1 to 12 shown, it includes an injection balloon, a catheter 5, a catheter guide wire tube 6, and the locking mechanism in Embodiment 1. The injection balloon is installed on the installation end of the mounting base 3 of the locking mechanism. The catheter guide wire tube 6 is located inside the catheter 5. Both the catheter 5 and the catheter guide wire tube 6 are fixedly connected to the fixed end of the locking joint 4 of the locking mechanism. Pass the release wire 10 through the catheter assembly, then through the wire channel 402, the insert piece 801, and the wire blind hole 302. First, lock the injection balloon and the catheter assembly. Then, drive the injection balloon into the artery with the catheter assembly. Adjust the position of the injection balloon as needed to accurately place the injection balloon into the tumor cavity of the tumor. After injection and filling, pull out the release wire 10 to unlock the injection balloon and the catheter assembly. Then, pull out the catheter assembly, and the injection balloon remains in the tumor cavity of the tumor.

[0053] In one embodiment, as Figures 1 to 12 shown, this detachable balloon further includes an injection tube 7. The injection balloon is provided with an injection port. The plug end of the mounting base 3 is provided with an injection hole 305, which penetrates through to the installation end. The injection hole 305 is communicated with the injection port. A one-way valve 9 is provided in the injection hole 305 to ensure that the liquid can only enter the injection balloon and will not be discharged from the injection balloon, ensuring that the injection balloon can be effectively filled and inflated. The fixed end of the locking joint 4 is provided with a liquid delivery hole 405, which penetrates through to the connection end. The liquid delivery hole 405 corresponds to the injection hole 305. The injection tube 7 can extend into the injection hole 305 through the liquid delivery hole 405 to inject liquid into the injection hole 305, and the liquid is then injected into the injection balloon through the one-way valve 9.

[0054] In one embodiment, as Figures 1 to 12As shown, the one-way valve 9 includes a check washer 901 and a limit washer 902. The check washer 901 and the limit washer 902 are coaxially and fixedly connected. The check washer 901 is close to the injection balloon, and the limit washer 902 is away from the injection balloon. The check washer 901 is provided with an opening and closing hole and elastic flaps 903. The opening and closing hole is coaxially arranged with the check washer 901. The elastic flaps 903 are used to close the opening and closing hole. The number of the elastic flaps 903 is set as required, and at least three elastic flaps 903 are included, which are circumferentially arranged on the opening and closing hole. The thickness of the elastic flaps 903 is the same as that of the check washer 901, that is, the two end faces of the elastic flaps 903 are flush with the two end faces of the check washer 901. The two end faces refer to the side facing the injection balloon and the side facing the limit washer 902. The limit washer 902 is attached to the check washer 901. The limit washer 902 is provided with a water passing hole 904. The water passing hole 904 is coaxially arranged with the opening and closing hole. The aperture of the water passing hole 904 is smaller than that of the opening and closing hole, so that the check washer 901 can limit the elastic flaps 903 to prevent the liquid in the injection balloon from reversely flushing open the elastic flaps 903 to cause liquid backflow. During injection, after the liquid flows into the water passing hole 904, it will push the elastic flaps 903 and push open the elastic flaps 903, so that the water flow can pass through and be injected into the injection balloon. When the injection stops, under the liquid pressure in the injection balloon, the elastic flaps 903 swing back. Because the water passing hole 904 is smaller than the opening and closing hole, the limit washer 902 will give support to the elastic flaps 903, so that the elastic flaps 903 will not open towards the limit washer 902 after closing, thus realizing one-way injection.

[0055] In an embodiment, as Figures 1 to 12 shown, the water passing hole 904 is a conical hole. The small diameter end of the conical hole is close to the opening and closing hole, and the large diameter end of the conical hole communicates with the injection hole 305. The conical hole can limit the elastic flaps 903 to the maximum extent, and at the same time, it can also increase the liquid flow rate when the liquid flows through and increase the impact force for flushing open the elastic flaps 903. An annular groove 905 is provided at one end of the check washer 901 away from the limit washer 902. The inner ring of the annular groove 905 is connected to the elastic flaps 903. The arrangement of the annular groove 905 makes the elastic flaps 903 easy to bend unidirectionally when being flushed open by the liquid, so as to open the opening and closing hole and allow the liquid to flow into the injection balloon.

[0056] In an embodiment, as Figures 1 to 12 shown, the injection balloon includes a double membrane body 1 and a balloon guide wire tube 2. The inner membrane 101 of the double membrane body 1 is fixedly connected to the balloon guide wire tube 2. The outer membrane 102 and the inner membrane 101 of the double membrane body 1 are both fixed on the mounting base 3. There is a spacing between the outer membrane 102 and the inner membrane 101 for forming an injection port.

[0057] In an embodiment, as Figures 1 to 12As shown, an annular opening 307 is provided at the mounting end of the mounting base 3, and the liquid injection hole 305 and the liquid injection port are both communicated with the annular opening 307. After the pressurized liquid is injected from the liquid injection pipe 7, it will enter the annular opening 307 through the one-way valve 9, and then flow along the annular opening 307 to fill the inner cavity of the double membrane capsule 1.

[0058] In one embodiment, as Figures 1 to 12 shown, a balloon guide wire tube hole 306 is provided at the mounting end of the mounting base 3, and the balloon guide wire tube hole 306 is communicated with the insertion hole 301 (if the insertion hole 301 is a tapered hole, the balloon guide wire tube hole 306 is communicated with the tip of the tapered hole). A catheter guide wire tube hole 404 is provided at the fixed end of the locking joint 4, and the catheter guide wire tube hole 404 penetrates through to the plug joint 401. The catheter guide wire tube hole 404 corresponds to the position of the balloon guide wire tube hole 306, the catheter guide wire tube 6 is fixedly connected in the catheter guide wire tube hole 404, and the balloon guide wire tube 2 can be inserted into the catheter guide wire tube 6, which is beneficial to the catheter guide wire tube 6 to control the injection balloon.

[0059] In one embodiment, as Figures 1 to 12 shown, a fixing piece 803 is provided on the resilient piece 8, the fixing piece 803 is fixed on the plug joint 401, and a guide wire tube through hole corresponding to the catheter guide wire tube hole 404 is provided on the fixing piece 803, that is, the guide wire tube through hole is coaxially arranged with the catheter guide wire tube hole 404, and the catheter guide wire tube 6 passes through the catheter guide wire tube hole 404 and the guide wire tube through hole and then is sleeved on the balloon guide wire tube 2.

[0060] Specific examples are used in the present invention to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A locking mechanism, characterized in that: Includes mounting base, locking connector and release wire; The mounting base comprises a plug-in end and a mounting end for mounting the first component, the plug-in end is provided with a plug-in hole and a wire drawing blind hole, the inner wall of the plug-in hole is provided with a limiting groove and an embedding groove located on the same side, the limiting groove is located between the embedding groove and the mounting end, and the embedding groove is connected with the wire drawing blind hole; The locking joint comprises a connecting end and a fixed end for fixing with a second member, the connecting end is provided with a plug connector for being plugged into the plug hole, the fixed end is provided with a wire drawing channel, the wire drawing channel runs through from the fixed end to the connecting end, the wire drawing channel corresponds to the position of the wire drawing blind hole, a retraction groove and a springback sheet are provided on the plug connector, the retraction groove corresponds to the limit groove, the springback sheet is embedded in the retraction groove under the action of elasticity, the springback sheet is provided with a limit tooth and an embedding sheet capable of extending into the embedding groove, the embedding sheet is provided with a wire drawing through hole, the wire drawing through hole can correspond to the wire drawing blind hole when the embedding sheet extends into the embedding groove, and the limit tooth can be embedded in the limit groove when the wire drawing through hole corresponds to the wire drawing blind hole; The release wire is used to pass through the wire drawing channel, the wire drawing through hole and the wire drawing blind hole in sequence, so as to pull the embedding sheet into the embedding groove, pull the spring back sheet out of the retreat groove, and embed the limiting tooth into the limiting groove, thereby firmly connecting the mounting base and the locking joint, and locking the first component and the second component; when the first component and the second component need to be disengaged, the release wire is pulled out, and when the release wire is disengaged from the wire drawing blind hole and the wire drawing through hole, the spring back sheet will rebound under the action of elasticity and be re-embedded in the retreat groove, and the limiting tooth will disengage from the limiting groove, thereby disconnecting the lock between the mounting base and the locking joint, and completing the unlocking between the first component and the second component.

2. The locking mechanism according to claim 1, characterized in that: The plug connector is a tapered head, and the plug hole is a tapered hole.

3. A detachable balloon, characterized in that: It includes an injection balloon, a catheter, a catheter guide wire tube and a locking mechanism as described in claim 1 or 2, wherein the injection balloon is installed on the mounting end of the mounting base of the locking mechanism, the catheter guide wire tube is located in the catheter, and the catheter and the catheter guide wire tube are both fixedly connected to the fixed end of the locking joint of the locking mechanism.

4. The detachable balloon according to claim 3, characterized in that: It also includes an injection tube, the injection balloon is provided with an injection port; the plug end is provided with an injection hole, the injection hole penetrates to the mounting end, the injection hole is communicated with the injection port, and a one-way valve is provided in the injection hole; the fixed end is provided with a liquid delivery hole, the liquid delivery hole penetrates to the connecting end, and the liquid delivery hole corresponds to the injection hole; The liquid injection tube can extend from the liquid delivery hole into the liquid injection hole.

5. The detachable balloon according to claim 4, characterized in that: The one-way valve includes a check washer and a limiting washer which are coaxially fixedly connected. The check washer is close to the liquid injection balloon. The check washer is provided with an opening and closing hole. The opening and closing hole is provided with an elastic petal for opening and closing. The opening and closing hole is coaxially arranged with the check washer. The limiting washer is fitted with the check washer. The limiting washer is provided with a water hole. The water hole is coaxially arranged with the opening and closing hole. The aperture of the water hole is smaller than that of the opening and closing hole.

6. The detachable balloon according to claim 5, characterized in that: The water through hole is a conical hole, the small diameter end of the conical hole is close to the opening and closing hole, the large diameter end of the conical hole is connected to the injection hole, and an annular groove is provided on the end of the check washer away from the limiting washer, and the inner ring of the annular groove is connected to the elastic petal.

7. The detachable balloon according to claim 5, characterized in that: The liquid injection balloon includes a double-membrane balloon body and a balloon guide wire tube, the inner membrane of the double-membrane balloon body is fixedly connected to the balloon guide wire tube, the outer membrane and the inner membrane of the double-membrane balloon body are both fixedly connected to the mounting base, and there is a distance between the outer membrane and the inner membrane for forming the liquid injection port.

8. The detachable balloon according to claim 7, characterized in that: The mounting end is provided with an annular opening connected with the liquid injection hole, and the annular opening is connected with the liquid injection port.

9. The detachable balloon according to claim 8, characterized in that: The mounting end is provided with a balloon guide wire tube hole connected to the plug hole, and the fixed end is provided with a catheter guide wire tube hole penetrating to the plug connector. The catheter guide wire tube hole corresponds to the position of the balloon guide wire tube hole, the catheter guide wire tube is fixedly connected in the catheter guide wire tube hole, and the balloon guide wire tube can be inserted into the catheter guide wire tube.

10. The detachable balloon according to claim 9, characterized in that: A fixing plate is provided on the resilient plate, the fixing plate is fixed on the plug connector, and a wire guide tube through hole corresponding to the wire guide tube hole of the catheter is provided on the fixing plate.

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