A locking mechanism and a detachable balloon

Abstract

The invention discloses a locking mechanism and a releasable balloon, belonging to the technical field of medical equipment, including a mounting base, a locking joint and a release wire drawing; the mounting base includes a plug-in end and a mounting end, 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 limit groove and an embedding groove, and the embedding groove is connected with the wire drawing blind hole; the locking joint includes a connecting end and a fixed end, the connecting end is provided with a plug-in joint, the fixed end is provided with a wire drawing channel, the plug-in joint is provided with a retreat groove and a rebound sheet, the rebound sheet is embedded in the retreat groove under the action of elasticity, the rebound sheet is provided with a limit tooth and an embedding sheet, the embedding sheet is provided with a wire drawing through hole, the wire drawing through hole can correspond to the wire drawing blind hole, and the limit tooth can be embedded in the limit groove; the release wire drawing is used to pass through the wire drawing channel, the wire drawing through hole and the wire drawing 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 being released, solving the problem that the traditional release balloon cannot be adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a locking mechanism and a releasable balloon. Background Art

[0002] Occlusion of the parent artery (the artery carrying the aneurysm) is an important surgical method for the clinical treatment of intracranial aneurysms. It is achieved by implanting interventional embolic materials such as coils and detachable balloons into the aneurysm of the parent artery, thereby occluding the aneurysm lumen, isolating the aneurysm blood supply, and gradually thrombosis and atrophy of the aneurysm, thereby achieving the purpose of treatment.

[0003] Since the coil is a wire, it cannot effectively fill the tumor cavity completely and cannot completely isolate the blood flow in the cavity. Especially when the tumor is large, it is more difficult to completely block the tumor cavity, and multiple coils need to be implanted. The surgical operation is complicated, and excessive packing will also increase the risk of tumor rupture. Although the detachable balloon can better fill the tumor cavity, there is a common problem in the detachable balloon known to the inventor: because the balloon and the injection catheter cannot be locked, that is, the injection catheter can only carry the balloon in one direction in the blood vessel, and cannot be carried back by the injection catheter. When the balloon implantation position is inaccurate, it cannot be adjusted again. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned technical problems and to provide a locking mechanism and a detachable balloon. Through the mutual cooperation of a mounting base, a locking joint, a rebound sheet and a 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 respectively adopt an injection balloon and a catheter assembly, the position of the injection balloon can be adjusted before the injection balloon is released to ensure that the injection balloon is accurately retained and filled in the tumor cavity of the tumor body, thereby solving the problem that the traditional release balloon can only move in one direction and cannot be adjusted in the blood vessel, and the catheter assembly can be selectively withdrawn when the injection balloon is released or without releasing the balloon, thereby having the functions of both a release balloon and a conventional balloon.

[0005] To achieve the above-mentioned object, the present invention provides the following solutions: The present invention discloses a locking mechanism, including a mounting base, a locking joint and a 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 wire drawing release is used to sequentially pass through the wire drawing channel, the wire drawing through hole and the wire drawing blind hole.

[0006] Preferably, the plug connector is a tapered head, and the plug hole is a tapered hole.

[0007] Also disclosed is a detachable balloon, comprising a liquid-injected balloon, a catheter, a catheter guide wire tube and the above-mentioned locking mechanism, wherein the liquid-injected balloon is mounted on the mounting end of the mounting base of the locking mechanism, the catheter guide wire tube is located inside 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.

[0008] Preferably, it also includes an injection tube, and the injection balloon is provided with an injection port; the plug-in end is provided with an injection hole, the injection hole passes through the mounting end, the injection hole is connected 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 passes through the connecting end, and the liquid delivery hole corresponds to the injection hole; the injection tube can extend from the liquid delivery hole into the injection hole.

[0009] Preferably, the one-way valve includes a check washer and a limiting washer 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, and the aperture of the water hole is smaller than that of the opening and closing hole.

[0010] Preferably, the water flow 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.

[0011] Preferably, 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 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.

[0012] Preferably, 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.

[0013] Preferably, 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.

[0014] Preferably, 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.

[0015] Compared with the prior art, the present invention has achieved the following technical effects: In the present invention, after the release wire is passed through the wire drawing channel, the embedding sheet and the wire drawing blind hole in sequence, the embedding sheet can be pulled into the embedding groove to pull the spring sheet out of the retreat groove, so that the limiting tooth is embedded in the limiting groove, so that the mounting base and the locking joint are locked in the axial and circumferential directions, thereby 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 the spring sheet will rebound and be re-embedded in the retreat groove under the action of elasticity, and the limiting tooth will be disengaged from the limiting groove, thereby disconnecting the lock between the mounting base and the locking joint, completing the unlocking between the first component and the second component. When the first component and the second component are respectively an injection balloon and a catheter assembly, the position of the injection balloon can be adjusted arbitrarily before the injection balloon and the catheter assembly are disengaged to ensure that the injection balloon accurately enters the tumor body, and the catheter assembly can be selectively withdrawn when the injection balloon is released or without releasing the balloon, so that the injection balloon has the functions of both a release balloon and a conventional balloon. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the analysis of these drawings without paying creative work.

[0017] Figure 1 It is a schematic cross-sectional view of the detachable balloon in an embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged view of Figure 3 It is a schematic cross-sectional structural diagram of a double-membrane capsule and a mounting base in an embodiment of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of a double-membrane capsule and a mounting base in an embodiment of the present invention; Figure 5 It is a schematic cross-sectional structural diagram of a locking joint in an embodiment of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the locking joint in an embodiment of the present invention; Figure 7 It is a top view of a three-dimensional structure of a one-way valve in an embodiment of the present invention; Figure 8 It is a schematic diagram of the bottom view of the one-way valve in an embodiment of the present invention; Fig. 9 It is a cross-sectional schematic diagram of a detachable balloon before the double-membrane balloon body is detached in an embodiment of the present invention; Fig.10 It is a cross-sectional schematic diagram of a detachable balloon when the double-membrane balloon body is detached in an embodiment of the present invention; Fig.11 It is a cross-sectional schematic diagram of a detachable balloon after the double-membrane balloon body is detached in an embodiment of the present invention; Fig.12 It is a schematic diagram of the structure after the double membrane bladder and the mounting base are disengaged in an embodiment of the present invention.

[0018] Description of reference numerals: 1. Double membrane balloon body; 2. Balloon guide wire tube; 3. Mounting base; 4. Locking joint; 5. Catheter; 6. Catheter guide wire tube; 7. Injection tube; 8. Rebound sheet; 9. One-way valve; 10. Release wire drawing; 101, inner membrane; 102, outer membrane; 301, plug-in hole; 302, wire drawing blind hole; 303, limit groove; 304, embedding groove; 305, injection hole; 306, balloon guide wire tube hole; 307, annular opening; 401, plug connector; 402, wire drawing channel; 403, retraction groove; 404, catheter wire guide hole; 405, liquid delivery hole; 801, embedded sheet; 802, limiting teeth; 803, fixed sheet; 901, non-return washer; 902, limiting washer; 903, elastic petal; 904, water hole; 905, annular groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments analyzed and obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] 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 a mounting base, a locking joint, a rebound sheet and a release wire, the mounting base on which the first component is mounted and the locking joint fixed to the second component can be locked and disengaged as needed. When the first component and the second component respectively adopt an injection balloon and a catheter assembly, the position of the injection balloon can be adjusted by using the catheter assembly to ensure that the injection balloon is accurately retained and filled in the tumor cavity of the tumor body, thereby solving the problem that the traditional release balloon can only move in one direction in the blood vessel and cannot be adjusted.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1 This embodiment provides a locking mechanism, such as Figures 1 to 12 As shown, it includes a mounting base 3, a locking joint 4 and a release wire 10.

[0023] The mounting base 3 includes a plug-in end and a mounting end, and the mounting end is used for mounting the first component. The plug-in end is provided with a plug-in hole 301 and a wire drawing blind hole 302, and the inner wall of the plug-in hole 301 is provided with a limit groove 303 and an embedding groove 304, and the limit groove 303 and the embedding groove 304 are located on the same side. The limit groove 303 is located between the embedding groove 304 and the mounting end, and the embedding groove 304 is connected with the wire drawing blind hole 302.

[0024] The locking connector 4 includes a connecting end and a fixed end, and the fixed end is used to be fixed to the second component. A plug connector 401 is provided on the connecting end, and the plug connector 401 is used to be plugged into the plug hole 301. A wire drawing channel 402 is provided on the fixed end, and the wire drawing channel 402 runs through the fixed end to the connecting end. The wire drawing channel 402 is located beside the plug connector 401. The wire drawing channel 402 can be a through hole or a groove. The wire drawing channel 402 corresponds to the position of the wire drawing blind hole 302. A retraction groove 403 and a rebound spring sheet 8 are provided on the plug connector 401, and the retraction groove 403 corresponds to the limit groove 303. The rebound spring sheet 8 is embedded in the retraction groove 403 under the action of elasticity, and the rebound spring sheet 8 is provided with an embedding sheet 801 and a limit tooth 802. The embedded sheet 801 can be inserted into the embedded slot 304. The embedded sheet 801 is provided with a drawing hole, which can correspond to the drawing blind hole 302 when the embedded sheet 801 is inserted into the embedded slot 304. The limiting tooth 802 can be embedded in the limiting slot 303 when the drawing hole corresponds to the drawing blind hole 302.

[0025] The release wire drawing 10 is used to pass through the wire drawing channel 402, the wire drawing through hole and the wire drawing blind hole 302 in sequence, so as to pull the embedding sheet 801 into the embedding groove 304, so as to pull the rebound sheet 8 out of the retreat groove 403, and embed the limiting tooth 802 into the limiting groove 303, thereby firmly connecting the mounting base 3 and the locking joint 4, and locking the first component and the second component. When the first component and the second component need to be disengaged, the release wire drawing 10 is pulled out. When the release wire drawing 10 is disengaged from the wire drawing blind hole 302 and the wire drawing through hole, the rebound sheet 8 will rebound under the action of elasticity and be re-embedded in the retreat groove 403, and the limiting tooth 802 will be disengaged from the limiting groove 303, thereby disconnecting the lock between the mounting base 3 and the locking joint 4, and completing the unlocking between the first component and the second component.

[0026] The first component and the second component are any two items that need to be locked and released, such as a liquid injection balloon (first component) and a catheter assembly (second component), or a spring coil (first component) and a catheter assembly (second component). The liquid injection balloon is installed on the mounting end of the mounting base 3, the catheter assembly and the fixed end of the locking joint 4 are fixed, the release wire drawing 10 is passed through the catheter assembly, and then penetrated into the wire drawing channel 402, the embedded sheet 801 and the wire drawing blind hole 302, the liquid injection balloon and the catheter assembly are locked first, and then the liquid injection balloon is sent into the artery under the drive of the catheter assembly, the position of the liquid injection balloon is adjusted as needed, so that the liquid injection balloon accurately enters the tumor cavity of the tumor body, and the release wire drawing 10 is pulled out after the liquid injection is filled, the liquid injection balloon and the catheter assembly are locked, and then the catheter assembly is pulled out, and the liquid injection balloon is retained in the tumor cavity of the tumor body.

[0027] In one embodiment, if Figures 1 to 12As shown, the plug connector 401 is a conical head, the tip of the conical mouth is far away from the connection end of the locking connector 4, and the retraction groove 403 extends from the tip of the plug connector 401 to the round thick end. The plug hole 301 is a conical hole, and the tip of the conical hole is far away from the plug end of the mounting base 3.

[0028] In one embodiment, if Figures 1 to 12 As shown, the resilient sheet 8 is made of elastic material and is in a retracted state in a natural state, retracted in the retracted groove 403. A tooth-shaped protrusion is provided on the cantilever of the release buckle, which is used to buckle with the tooth-shaped groove on the inner wall of the balloon seat.

[0029] Example 2 This embodiment provides a detachable balloon, such as Figures 1 to 12 As shown, it includes a liquid injection balloon, a catheter 5, a catheter wire guide tube 6 and the locking mechanism in Example 1. The liquid injection balloon is installed on the mounting end of the mounting base 3 of the locking mechanism, and the catheter wire guide tube 6 is located in the catheter 5. The catheter 5 and the catheter wire guide tube 6 are fixedly connected to the fixed end of the locking joint 4 of the locking mechanism. The release wire drawing 10 is passed through the catheter assembly, and then penetrated into the wire drawing channel 402, the embedded sheet 801 and the wire drawing blind hole 302, firstly realize the locking of the liquid injection balloon and the catheter assembly, and then the liquid injection balloon is sent into the artery under the drive of the catheter assembly, and the position of the liquid injection balloon is adjusted as needed, so that the liquid injection balloon accurately enters the tumor cavity of the tumor body, and after the liquid injection is filled, the release wire drawing 10 is pulled out, the liquid injection balloon and the catheter assembly are unlocked, and then the catheter assembly is pulled out, and the liquid injection balloon is retained in the tumor cavity of the tumor body.

[0030] In one embodiment, if Figures 1 to 12 As shown, the releasable balloon also includes an injection tube 7. The injection balloon is provided with an injection port. An injection hole 305 is provided on the plug-in end of the mounting base 3, and the injection hole 305 extends to the mounting end. The injection hole 305 is connected to the injection port, and a one-way valve 9 is provided in the injection hole 305 to ensure that liquid can only enter the injection balloon and will not be discharged from the injection balloon, thereby ensuring that the injection balloon can be effectively filled and expanded. A liquid delivery hole 405 is provided on the fixed end of the locking joint 4, and the liquid delivery hole 405 extends to the connecting end, and the liquid delivery hole 405 corresponds to the injection hole 305. The injection tube 7 can extend from the liquid delivery hole 405 into the injection hole 305 to inject liquid into the injection hole 305, and the liquid is then injected into the injection balloon through the one-way valve 9.

[0031] In one embodiment, if Figures 1 to 12As shown, the one-way valve 9 includes a check washer 901 and a limiting washer 902, which are coaxially fixedly connected, the check washer 901 is close to the liquid injection balloon, and the limiting washer 902 is far away from the liquid injection balloon. The check washer 901 is provided with an opening and closing hole and an elastic flap 903, the opening and closing hole is coaxially arranged with the check washer 901, the elastic flap 903 is used to close the opening and closing hole, the number of the elastic flap 903 is set as required, and at least three elastic flaps 903 are contained, which are circumferentially arranged on the opening and closing hole. The thickness of the elastic flap 903 is consistent with the thickness of the check washer 901, that is, the two end faces of the elastic flap 903 are flush with the two end faces of the check washer 901, and the two end faces refer to the side facing the liquid injection balloon and the side facing the limiting washer 902. The limiting gasket 902 is fitted with the check gasket 901, and a water hole 904 is provided on the limiting gasket 902. The water hole 904 is coaxially arranged with the opening and closing hole, and the aperture of the water hole 904 is smaller than the opening and closing hole, so that the check gasket 901 limits the elastic flap 903 to prevent the liquid in the injection balloon from reversely flushing the elastic flap 903 to generate liquid reflux. During injection, after the liquid flows into the water hole 904, it will push the elastic flap 903 and push the elastic flap 903 open, so that the water flows through and is injected into the injection balloon. When the injection is stopped, under the pressure of the liquid in the injection balloon, the elastic flap 903 swings back. Because the water hole 904 is smaller than the opening and closing hole, the limiting gasket 902 will support the elastic flap 903, so that the elastic flap 903 will not open in the direction of the limiting gasket 902 after closing, thereby realizing one-way injection.

[0032] In one embodiment, if Figures 1 to 12 As shown, the water 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 is connected to the injection hole 305. The conical hole can limit the elastic flap 903 to the maximum extent, and can also increase the liquid flow rate when the liquid flows through, thereby increasing the impact force of flushing the elastic flap 903. An annular groove 905 is provided on the end of the check washer 901 away from the limiting washer 902, and the inner ring of the annular groove 905 is connected to the elastic flap 903. The setting of the annular groove 905 makes it easy for the elastic flap 903 to bend in one direction when it is flushed by the liquid, thereby opening the opening and closing hole and allowing the liquid to flow into the injection balloon.

[0033] In one embodiment, if Figures 1 to 12 As shown, the liquid injection balloon includes a double-membrane balloon body 1 and a balloon guide wire tube 2. The inner membrane 101 of the double-membrane balloon 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 balloon body 1 are both fixed on the mounting base 3. There is a distance between the outer membrane 102 and the inner membrane 101 to form a liquid injection port.

[0034] In one embodiment, if Figures 1 to 12As shown, an annular opening 307 is provided on the mounting end of the mounting base 3, and the injection hole 305 and the injection port are both connected to the annular opening 307. After the pressurized liquid is injected from the injection pipe 7, it will enter the annular opening 307 after passing 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.

[0035] In one embodiment, if Figures 1 to 12 As shown, a balloon guide wire tube hole 306 is provided on the mounting end of the mounting base 3, and the balloon guide wire tube hole 306 is communicated with the plug hole 301 (if the plug 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 on the fixed end of the locking joint 4, and the catheter guide wire tube hole 404 penetrates to the plug joint 401. The catheter guide wire tube hole 404 corresponds to the position of the balloon guide wire tube hole 306, and 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 conducive to the catheter guide wire tube 6 to control the liquid injection balloon.

[0036] In one embodiment, if Figures 1 to 12 As shown, the rebound sheet 8 is provided with a fixing sheet 803, and the fixing sheet 803 is fixed on the plug connector 401. The fixing sheet 803 is provided with a guide wire tube through hole corresponding to the catheter guide wire tube hole 404, 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.

[0037] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting 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 wire drawing release is used to sequentially pass through the wire drawing channel, the wire drawing through hole and the wire drawing blind hole.

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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