Catheter rotation structure and blade balloon

Abstract

The application belongs to the technical field of medical devices, and discloses a catheter rotating structure and a blade balloon. The catheter rotating structure comprises a first connecting pipe, a second connecting pipe in sliding and rotating cooperation with the first connecting pipe, a rotating assembly comprising a first rack and a gear slot, the first rack being annularly arranged on the outer peripheral wall of the first connecting pipe, the gear slot being annularly arranged on the second connecting pipe, the gear slot having a first guide slope, the first rack sliding along the first guide slope to make the first connecting pipe rotate by a specific angle and then drive the first rack to mesh with the gear slot, a push-pull pipe, a sliding cover being arranged at the connection between the first connecting pipe and the second connecting pipe, the inner wall of the push-pull pipe being provided with a guide groove, the first rack sliding along the guide groove, and an elastic member, the sliding cover being arranged on the outer peripheral wall of the first connecting pipe, and the two ends of the elastic member being in contact with and pressing against the push-pull pipe and the first connecting pipe, respectively. The application can more accurately and efficiently perform angle adjustment operation of the catheter, reduce operation difficulty, and improve the accuracy and safety of the operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and more particularly to a catheter rotation structure and a blade balloon. BACKGROUND

[0002] In the field of interventional therapy, balloon catheters are important tools for performing angioplasty and other interventional vascular surgery. Traditional balloon catheters are used to dilate narrow or blocked blood vessels. The blade balloon surface is equipped with micro-blades. The blade balloon can longitudinally cut through atherosclerotic plaques when expanding to reduce circumferential pressure, reduce potential damage caused by balloon expansion, and limit damage to the incision, effectively reducing the risk of irregular tears and severe dissection.

[0003] In current angioplasty surgery, doctors usually use blade balloons to cut the narrow blood vessels multiple times. In order to achieve the desired cutting effect, the doctor needs to manually adjust the angle of the balloon according to the characteristics and location of the lesion, based on professional skills and clinical experience. Usually, each rotation of the catheter drives the rotation of the blade balloon. After the blade balloon is rotated, the blade balloon is expanded to cut the hardened plaque in the blood vessel once. After each cutting, the doctor needs to rotate the balloon by a certain angle before the next cutting. During multiple cutting, the doctor cannot ensure that the angle of the blade balloon is consistent each time it is rotated, so the cutting position of the blade balloon cannot be accurately determined, and the uniformity of the cutting of the blade balloon in the circumferential direction cannot be guaranteed, resulting in complex surgical operation and affecting the treatment effect and recovery speed of the patient. SUMMARY

[0004] The embodiments of the present application provide a catheter rotation structure and a blade balloon. The doctor can more accurately and efficiently adjust the angle of the catheter during interventional surgery, accurately cut the blade balloon, and form uniform incisions, improving the treatment effect and recovery speed of the patient. At the same time, the operation difficulty of the doctor is reduced, thereby improving the accuracy, safety and success rate of the surgery.

[0005] The catheter rotation structure and the blade balloon provided by the present application adopt the following technical solutions:

[0006] In a first aspect, the present application provides a catheter rotation structure, which adopts the following technical solutions:

[0007] A catheter rotation structure, comprising:

[0008] A first connecting pipe for connecting a balloon;

[0009] A second connecting pipe for connecting a pressure pump, the second connecting pipe being in sliding and rotating cooperation with the first connecting pipe;

[0010] A rotating assembly includes a first rack and a first connecting pipe, the first rack is annularly arranged on the outer wall of the first connecting pipe, and the first rack is slid along a first guide slope to rotate the first connecting pipe by a certain angle, and then the first rack is engaged with a gear slot.

[0011] A push-pull pipe is arranged at the connection between the first connecting pipe and the second connecting pipe, and a guide groove is arranged on the inner wall of the push-pull pipe.

[0012] An elastic member is arranged on the outer wall of the first connecting pipe, and the two ends of the elastic member are in contact with and press against the push-pull pipe and the first connecting pipe.

[0013] Optionally, the rotating assembly further includes a second rack and a third rack, the second rack is annularly arranged on the inner wall of the push-pull pipe, a guide groove is formed between adjacent second racks, the third rack is annularly arranged on the outer wall of the second connecting pipe, a second guide slope is arranged on the end face of the third rack facing the second rack, the second rack and the third rack gradually approach, and the second rack is slid along the second guide slope while the first rack is slid along the guide groove to rotate the first connecting pipe by a certain angle.

[0014] Optionally, the second rack is provided with a third guide slope on the end face facing the third rack, and the third guide slope is parallel to the second guide slope.

[0015] Optionally, an avoiding groove is formed between adjacent third racks, the second rack is slid along the second guide slope to the avoiding groove, and then the second rack is connected with the avoiding groove in sliding mode; the third rack is slid along the third guide slope to the guide groove, and then the third rack is connected with the guide groove in sliding mode.

[0016] Optionally, the first connecting pipe includes a connecting part located in the second connecting pipe, the inner wall of the second connecting pipe is provided with a mounting groove, the outer wall of the connecting part is provided with a plurality of first convex rings and second convex rings side by side, the first convex ring is located in the mounting groove and is fitted with the inner wall of the mounting groove, and the second convex ring is located at one end of the mounting groove, and the outer wall of the second convex ring is fitted with the inner wall of the second connecting pipe.

[0017] Optionally, a sealing ring is arranged between adjacent first convex rings, the outer wall of the sealing ring is fitted with and pressed against the inner wall of the mounting groove to seal the connecting part and the second connecting pipe.

[0018] Optionally, the outer peripheral wall of the first connecting pipe is provided with a rotation scale mark corresponding to the rotation angle of the first connecting pipe.

[0019] Optionally, the outer peripheral wall of the push-pull pipe is provided with a mark arrow showing the sliding direction of the push-pull pipe.

[0020] Optionally, the outer peripheral wall of the push-pull pipe is further provided with an anti-skid pattern for enhancing the friction between the hand and the push-pull pipe.

[0021] In a second aspect, the application provides a blade balloon adopting the following technical solution.

[0022] A blade balloon comprises the catheter rotation structure, the blade balloon and the pressure pump as described above, the first connecting pipe is used to connect the blade balloon, and the second connecting pipe is used to connect the pressure pump.

[0023] From the above technical solution, it can be seen that the embodiments of the application have the following advantages:

[0024] When the angle of the balloon needs to be adjusted, an action force is applied to the push-pull pipe to make the push-pull pipe move along the length direction of the push-pull pipe to compress the elastic member, the elastic member presses the first connecting pipe to make the first connecting pipe move towards the second connecting pipe, the first rack gradually approaches the tooth groove along the guide groove, the first rack contacts the first guide slope and slides along the first guide slope, the first rack applies a rotating action force to the guide groove to make the guide groove drive the first connecting pipe to gradually rotate, when the first rack moves along the guide slope to the lowest end of the tooth groove, the first rack is engaged with the tooth groove to limit the first connecting pipe to continue to rotate, thereby realizing the specific angle rotation of the first connecting pipe; after the adjustment of the angle of the balloon is completed, the operator releases the push-pull pipe, the push-pull pipe and the first connecting pipe are reset under the elastic recovery force of the elastic member to drive the first rack to re-enter the guide groove to complete the fixation of the first connecting pipe. The operator can control the rotation of the first connecting pipe by a simple push-pull action to operate the push-pull pipe, thereby adjusting the rotation angle of the balloon, reducing the operation difficulty of the doctor, and enabling the doctor to more accurately and efficiently perform the angle adjustment operation in the interventional surgery, realizing the accurate cutting of the blade balloon and forming a uniform incision, improving the treatment effect and recovery speed of the patient, and thereby improving the accuracy, safety and success rate of the surgery. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments described in the application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0026] Figure 1A schematic diagram of the overall structure of a catheter rotating structure disclosed in an embodiment of the present application;

[0027] Figure 2 An exploded view of a catheter rotating structure disclosed in an embodiment of the present application;

[0028] Figure 3 A structure sectional view of a catheter rotating structure disclosed in an embodiment of the present application highlighting the push-pull tube;

[0029] Figure 4 A structure schematic diagram of a catheter rotating structure disclosed in an embodiment of the present application highlighting the first connecting tube and the second connecting tube.

[0030] Explanation of reference signs:

[0031] 1, first connecting tube; 11, connecting part; 12, first protruding ring; 13, second protruding ring; 2, second connecting tube; 21, mounting groove; 3, rotating assembly; 31, first rack; 32, tooth groove; 321, first guide slope; 33, second rack; 331, third guide slope; 34, third rack; 341, second guide slope; 35, avoiding groove; 4, push-pull tube; 41, guide groove; 42, anti-skid ring; 5, elastic member. DETAILED DESCRIPTION

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] The catheter rotating structure and the blade balloon provided by the embodiments of the present application enable doctors to more accurately and efficiently perform angle adjustment operations of a catheter in an interventional operation, and the angle of the blade balloon is adjusted by adjusting the catheter to achieve accurate cutting of the blade balloon and form a uniform incision, thereby improving the treatment effect and recovery speed of patients. Meanwhile, the embodiments of the present application simplify the operation of the operation, thereby improving the accuracy, safety and success rate of the operation.

[0034] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor should belong to the protection scope of the present application. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the fact that persons skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope of the present application.

[0035] The terms "first", "second", "third", "fourth", and the like in the description and in the claims of the present application and above-described drawings are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of such terms is interchangeable under suitable circumstances such that the embodiments described herein are capable of operation in other sequences than described or illustrated herein. Moreover, the terms "comprise", "have" and any variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or units uses "comprising" or "having" is not necessarily limited to those steps or units but can include other not expressly listed steps or units.

[0036] In the current angioplasty surgery, doctors usually use a blade balloon to cut the stenosis blood vessels multiple times. In order to achieve the desired cutting effect, the doctor needs to manually adjust the angle of the balloon according to the characteristics and location of the lesion, according to professional skills and clinical experience. Usually, each rotation of the catheter drives the blade balloon to rotate, and after the blade balloon is expanded to cut the hardened plaque in the blood vessel once, the doctor needs to rotate the balloon by a certain angle before the next cutting. In multiple cutting, it is difficult for the doctor to ensure that the angle of the blade balloon is consistent each time, so the cutting position of the blade balloon cannot be accurately determined, and the uniformity of the cutting of the blade balloon in the circumferential direction cannot be guaranteed, resulting in complex operation, affecting the treatment effect and recovery speed of the patient.

[0037] To solve the above technical problems, the present application provides a catheter rotating structure and a blade balloon. Please refer to Figure 1 and Figure 2 For an embodiment of the catheter rotating positioning structure of the present application, it comprises a first connecting pipe 1, a second connecting pipe 2, a push-pull pipe 4, an elastic member 5 and a rotating assembly 3. The first connecting pipe 1 is used to connect the balloon, and the second connecting pipe 2 is used to connect the pressure pump. The second connecting pipe 2 is in sliding and rotating cooperation with the first connecting pipe 1. The push-pull pipe 4 is arranged at the connection between the first connecting pipe 1 and the second connecting pipe 2. The elastic member 5 is arranged on the outer circumferential wall of the first connecting pipe 1, and the two ends of the elastic member 5 respectively contact and press the push-pull pipe 4 and the first connecting pipe 1. The elastic member 5 exerts a force on the push-pull pipe 4 to make the push-pull pipe 4 move along the length direction of the push-pull pipe 4 to compress the elastic member 5, and the elastic member 5 presses the first connecting pipe 1 to make the first connecting pipe 1 move towards the second connecting pipe 2.

[0038] Please refer to Figures 2 to 4, the rotating assembly 3 comprises a first rack 31 and a tooth groove 32, the first rack 31 is annularly arranged on the outer wall of the first connecting pipe 1, the tooth groove 32 is annularly arranged on the end face of the second connecting pipe 2 towards the second connecting pipe 2, the tooth groove 32 has a first guide slope 321, the first rack 31 slides along the first guide slope 321 to rotate the first connecting pipe 1 by a certain angle, and then drives the first rack 31 to engage with the tooth groove 32; the inner wall of the push-pull pipe 4 is provided with a guide groove 41, and the first rack 31 slides along the guide groove 41.

[0039] It can be understood that when the first connecting pipe 1 moves towards the second connecting pipe 2, the first rack 31 gradually approaches the tooth groove 32 along the guide groove 41, the first rack 31 contacts and slides along the first guide slope 321, the first rack 31 exerts a rotating force on the guide groove 41 to drive the guide groove 41 to gradually rotate the first connecting pipe 1, and when the first rack 31 moves to the lowest end of the tooth groove 32, the first rack 31 engages with the tooth groove 32 to limit the continuous rotation of the first connecting pipe 1, thereby realizing the rotation of the first connecting pipe 1 by a certain angle.

[0040] In order to increase the rotation angle of the first connecting pipe 1, the rotating assembly 3 further comprises a second rack 33 and a third rack 34, the second rack 33 is annularly arranged on the inner wall of the push-pull pipe 4, the guide groove 41 is formed between adjacent second racks 33, the third rack 34 is annularly arranged on the outer wall of the second connecting pipe 2, the end face of the third rack 34 towards the second rack 33 is provided with a second guide slope 341, the second rack 33 and the third rack 34 gradually approach, and the second rack 33 slides along the second guide slope 341, while the first rack 31 slides along the guide groove 41 to drive the first connecting pipe 1 to rotate by a certain angle. The avoidance groove 35 is formed between adjacent third racks 34, the second rack 33 slides along the second guide slope 341 to the avoidance groove 35, and then the second rack 33 is connected with the avoidance groove 35 in sliding mode.

[0041] It can be understood that when the first connecting pipe 1 moves towards the second connecting pipe 2, the second rack 33 moves towards the third rack 34, the second rack 33 and the third rack 34 gradually approach until the second rack 33 contacts the third rack 34, the second rack 33 slides along the second guide slope 341, until the second rack 33 slides away from the second guide slope 341 to the avoidance groove 35, the second rack 33 is located in the avoidance groove 35 and connected with the avoidance groove 35 in sliding mode, while the second rack 33 moves towards the third rack 34, the first rack 31 slides along the guide groove 41 to drive the first connecting pipe 1 to rotate by a certain angle, at this time, the first rack 31 and the tooth groove 32 have a gap, and the first rack 31 and the tooth groove 32 are not engaged. Therefore, before the first rack 31 engages with the tooth groove 32, the second rack 33 and the third rack 34 cooperate to realize the first angle rotation of the first connecting pipe 1, thereby increasing the rotation angle of the first connecting pipe 1 to improve the work efficiency of medical staff.

[0042] Further, the second rack 33 is provided with a third guide slope 331 at the end face towards the third rack 34, the third rack 34 slides along the third guide slope 331 to the guide groove 41, and then the third rack 34 is in sliding connection with the guide groove 41. While the second rack 33 slides along the second guide slope 341, the third rack 34 slides along the third guide slope 331, the second rack 33 slides away from the second guide slope 341 to the avoiding groove 35, the third rack 34 slides away from the third guide slope 331 to the guide groove 41, and the first rack 31 and the third rack 34 are both located in the guide groove 41, at this time the first connecting pipe 1 stops rotating.

[0043] In the embodiment, the third guide slope 331 is parallel to the second guide slope 341, the first rack 31 is provided with a fourth guide slope at the end face towards the groove, the fourth guide slope is parallel to the first guide slope 321, and the inclination direction of the first guide slope 321 is opposite to the inclination direction of the second guide slope 341.

[0044] When it is necessary to adjust the balloon angle, an acting force is applied to the push-pull pipe 4 to make the push-pull pipe 4 move along the length direction of the push-pull pipe 4 to compress the elastic member 5, the elastic member 5 presses the first connecting pipe 1 to make the first connecting pipe 1 move towards the second connecting pipe 2; the first rack 31 and the second rack 33 move synchronously towards the second connecting pipe 2, the first rack 31 gradually moves along the guide groove 41 to approach the tooth groove 32, the second rack 33 gradually moves to approach the third rack 34, the second rack 33 and the third rack 34 are in contact prior to the first rack 31 and the tooth groove 32, the second rack 33 is in contact with the third rack 34 and slides along the second guide slope 341, until the second rack 33 slides away from the second guide slope 341 to the avoiding groove 35, while the second rack 33 and the third rack 34 move in sliding, the first rack 31 slides along the guide groove 41 to drive the first connecting pipe 1 to rotate by a specific angle; continue to apply the acting force to the push-pull pipe 4, as the push-pull pipe 4 drives the first connecting pipe 1 to continue moving towards the second connecting pipe 2, the second rack 33 is located in the avoiding groove 35 and is in sliding connection with the avoiding groove 35, the third rack 34 is located in the guide groove 41 and is in sliding connection with the guide groove 41, the first rack 31 continues to move towards the tooth groove 32 to make the first rack 31 contact with the first guide slope 321 and slide along the first guide slope 321, the first rack 31 applies a rotating acting force to the guide groove 41 to make the guide groove 41 drive the first connecting pipe 1 to gradually rotate, when the first rack 31 moves along the first guide slope 321 to the lowest end of the tooth groove 32, the first rack 31 is engaged with the tooth groove 32 to limit the first connecting pipe 1 to continue rotating, and the secondary specific angle rotation of the first connecting pipe 1 is realized.

[0045] After the balloon angle adjustment is completed, the operator releases the push-pull tube 4 to remove the force applied to the push-pull tube 4, and the elastic member 5 rebounds to drive the push-pull tube 4 and the first connecting tube 1 to move away from the second connecting tube 2. Under the rebounding force of the elastic member 5, the push-pull tube 4 and the first connecting tube 1 are reset, and the first rack 31 slides along the guide groove 41 and is located in the guide groove 41 to fix the first connecting tube 1.

[0046] The operator can control the rotation of the first connecting tube 1 by simply pushing and pulling the push-pull tube 4 to adjust the rotation angle of the balloon, thereby reducing the difficulty of the operation of the doctor, and the doctor can more accurately and efficiently perform the angle adjustment operation in the interventional surgery, realize accurate cutting of the blade balloon and form a uniform incision, improve the treatment effect and recovery speed of the patient, thereby improving the accuracy, safety and success rate of the surgery.

[0047] Please refer to Figure 2 and Figure 4 , the first connecting tube 1 includes a connecting portion 11 located in the second connecting tube 2, the inner wall of the second connecting tube 2 is provided with a mounting groove 21, and the outer peripheral wall of the connecting portion 11 is provided with a plurality of first convex rings 12 and second convex rings 13 in parallel, the first convex ring 12 is located in the mounting groove 21 and is attached to the inner peripheral wall of the mounting groove 21, and the second convex ring 13 is located at one end of the mounting groove 21, and the outer peripheral wall of the second convex ring 13 is attached to the inner wall of the second connecting tube 2. A sealing ring is provided between adjacent first convex rings 12, the sealing ring is preferably made of rubber, the outer peripheral wall of the sealing ring is attached to and pressed against the inner peripheral wall of the mounting groove to seal the connecting portion 11 and the second connecting tube 2, and the arrangement of the first convex ring 12, the second convex ring 13 and the sealing ring ensures that there is no liquid leakage between the first connecting tube 1 and the second connecting tube 2 during use.

[0048] In order to provide an intuitive rotation angle and ensure the accuracy of the rotation operation of the first connecting tube 1, a rotation scale mark is provided on the outer peripheral wall of the end of the first connecting tube 1 away from the connecting portion 11, and the rotation scale mark is used to correspond to the rotation angle of the first connecting tube 1.

[0049] The outer peripheral wall of the push-pull tube 4 is provided with an arrow mark, and the arrow mark is used to show the sliding direction of the push-pull tube 4. In this embodiment, the sliding direction of the push-pull tube 4 is towards the second connecting tube 2. During operation, only the force applied to the push-pull tube 4 in the direction of the arrow mark can achieve the angle adjustment of the first connecting tube 1.

[0050] Further, the outer peripheral wall of the push-pull tube 4 is also provided with anti-skid lines, which are used to enhance the friction between the hands and the push-pull tube 4, so as to ensure that the medical staff can also operate smoothly when wearing gloves. In the present embodiment, the anti-skid lines are obtained by providing an anti-skid ring 42 in a groove on the outer peripheral wall of the push-pull tube 4, and the anti-skid ring 42 is arranged in the groove to enhance the friction between the outer peripheral wall of the push-pull tube 4 and the hands. In some other embodiments, the anti-skid lines are obtained by providing annular or vertical protrusions on the outer peripheral wall of the push-pull tube 4, and the annular or vertical protrusions are used to enhance the friction between the outer peripheral wall of the push-pull tube 4 and the hands.

[0051] The present application discloses a blade balloon, which adopts the above-mentioned catheter rotating structure, blade balloon and pressure pump. The first connecting pipe 1 is used to connect the blade balloon, and the second connecting pipe 2 is used to connect the pressure pump. The operator only needs to apply force to the push-pull tube 4 in the direction of the marked arrow, so as to realize the angle adjustment of the first connecting pipe 1, and the angle adjustment of the first connecting pipe 1 synchronously drives the angle adjustment of the blade balloon. The doctor can more accurately and efficiently perform catheter operation in the interventional operation, realize accurate cutting of the blade balloon and form a uniform incision, improve the treatment effect and recovery speed of the patient, and thus improve the accuracy, safety and success rate of the operation.

[0052] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some technical features. Such modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A catheter rotation structure, characterized by, The utility model relates to a kind of balloon catheter, including: First connecting pipe for connecting balloon; Second connecting pipe for connecting pressure pump, the second connecting pipe is slidable and rotationally fitted with the first connecting pipe; Rotary assembly, including first rack and gear slot, the first rack annularly arranged on the outer wall of the first connecting pipe, the gear slot annularly arranged on the end face of the second connecting pipe towards the second connecting pipe, the gear slot has first guide slope, the first rack slides along the first guide slope to make the first connecting pipe rotate a certain angle, in turn drive the first rack and the gear slot engage; Push-pull tube, sliding cover is arranged at the junction of the first connecting pipe and the second connecting pipe, the inner wall of the push-pull tube is provided with guide groove, the first rack slides along the guide groove; Elastic member, the elastic member cover is arranged on the outer wall of the first connecting pipe, and the two ends of the elastic member respectively contact and press the push-pull tube and the first connecting pipe.

2. A conduit rotation structure according to claim 1, wherein The rotary assembly further includes a second rack and a third rack, the second rack is annularly arranged on the inner wall of the push-pull tube, the guide groove is formed between adjacent second racks, the third rack is annularly arranged on the outer wall of the second connecting pipe, the end face of the third rack towards the second rack is provided with a second guide slope, the second rack and the third rack gradually approach, and the second rack slides along the second guide slope, while the first rack slides along the guide groove to drive the first connecting pipe to rotate a certain angle.

3. A catheter rotation structure according to claim 2, wherein, The end face of the second rack towards the third rack is provided with a third guide slope, and the third guide slope is parallel to the second guide slope.

4. A catheter rotation structure according to claim 3, wherein, The guide groove is formed between adjacent third racks, the second rack slides along the second guide slope to the guide groove, and then the second rack is connected with the guide groove in sliding mode; the third rack slides along the third guide slope to the guide groove, and then the third rack is connected with the guide groove in sliding mode.

5. A conduit rotation structure according to claim 1, wherein The first connecting pipe includes a connecting portion located in the second connecting pipe, the inner wall of the second connecting pipe is provided with a mounting groove, the outer peripheral wall of the connecting portion is provided with a plurality of first convex rings and second convex rings side by side, the first convex ring is located in the mounting groove and fits with the inner peripheral wall of the mounting groove, the second convex ring is located at one end of the mounting groove, and the outer peripheral wall of the second convex ring fits with the inner wall of the second connecting pipe.

6. A conduit rotation structure according to claim 5, wherein A sealing ring is arranged between adjacent first convex rings, the outer peripheral wall of the sealing ring fits with and presses against the inner peripheral wall of the mounting groove to seal the connecting portion and the second connecting pipe.

7. A catheter rotation structure according to claim 1, wherein The outer peripheral wall of the first connecting pipe is provided with a rotation scale mark for corresponding the rotation angle of the first connecting pipe.

8. The catheter rotation structure of claim 1, wherein, The outer peripheral wall of the push-pull tube is provided with a mark arrow for showing the sliding direction of the push-pull tube.

9. A catheter rotation structure according to claim 8, wherein, The outer peripheral wall of the push-pull tube is further provided with an anti-slip pattern for enhancing the friction between the hand and the push-pull tube.

10. A blade balloon characterized in that, The catheter rotation structure, the blade balloon, and the pressure pump according to any one of claims 1 to 9, wherein the first connection tube is used to connect the blade balloon, and the second connection tube is used to connect the pressure pump.

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