Pericardial perfusion treatment device

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a pericardial perfusion treatment device, include: the barrel, the barrel front end is equipped with puncture needle, the inside puncture of barrel is equipped with pull rod, the end of pull rod is installed with piston in the barrel, puncture needle coaxial hole is seted up on pull rod and piston, the hole is equipped with the closed plug that can pass through the guide wire, support cylinder, support cylinder axial sliding is covered and is equipped on the barrel, locking mechanism, locking mechanism is installed on the support cylinder, is used for fixing support cylinder on the barrel. Its purpose is: solve the problem that the stability is poor and the operation is inconvenient caused by the structural defect of the existing treatment device.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a pericardial perfusion therapy device. Background Technology

[0002] The pericardium consists of two layers: an outer fibrous pericardium and an inner serous pericardium. The serous pericardium is located in the inner layer of the pericardial sac and is further divided into visceral and parietal layers. The parietal layer lining the inner surface of the fibrous pericardium is in close contact with it. The visceral layer surrounds the surface of the myocardium, forming the epicardium. The potential cavity between the visceral and parietal layers is the pericardial cavity, which contains a small amount of serous fluid, or pericardial fluid.

[0003] Pericardial perfusion therapy is mainly used to treat pericardial effusion, especially in cases of malignant pericardial effusion.

[0004] In order to avoid repeated punctures during pericardial perfusion therapy, a catheter is often placed in the patient's pericardium.

[0005] For catheter placement, the subxiphoid puncture point is generally chosen. When inserting the needle, the angle between the needle body and the abdominal wall is 30°–40°, and the needle is inserted upwards, backwards, and slightly to the left into the lower part of the pericardial cavity. During the puncture, if the resistance at the needle tip suddenly disappears, it indicates that the needle has penetrated the pericardial wall. If a heartbeat is felt, it indicates that the needle has penetrated the myocardium; in this case, the needle should be withdrawn slightly to avoid scratching the heart. After confirming that the needle has entered the pericardial cavity, immediately clamp the needle body with hemostatic forceps to fix its depth, and insert a guidewire along the needle lumen. Withdraw the needle, and make a slight incision in the skin at the puncture point with a scalpel. Insert a dilator along the guidewire, and advance it by twisting to dilate the skin and subcutaneous tissue at the puncture site before withdrawing the dilator. Then, perform the same procedure using a double-lumen catheter to place the catheter.

[0006] In practice, the method of clamping the needle with forceps and fixing its depth after confirming that the puncture needle has entered the pericardial cavity has problems of poor stability and inconvenience. Utility Model Content

[0007] The purpose of this invention is to provide a pericardial perfusion therapy device to solve the problems of poor stability and inconvenient operation caused by structural defects in existing therapy devices.

[0008] To achieve the above technical objectives, the technical solution adopted by this utility model is as follows:

[0009] A pericardial perfusion therapy device, comprising:

[0010] A cylindrical body, wherein a puncture needle is installed at the front end of the cylindrical body, a pull rod is inserted inside the cylindrical body, and a piston is installed at the end of the pull rod inside the cylindrical body;

[0011] The pull rod and piston are provided with a perforation hole coaxial with the puncture needle, and a sealing plug is provided in the perforation hole for the guide wire to pass through;

[0012] A support cylinder, which is axially slidably sleeved on the cylinder body;

[0013] A locking mechanism is installed on the support cylinder and is used to fix the support cylinder to the cylinder body.

[0014] Furthermore, the lower end face of the support cylinder forms an angle of 30° to 40° with the central axis of the support cylinder.

[0015] This structural design, by setting the lower end face of the support tube at an angle of 30° to 40° with the central axis of the support tube, ensures that the insertion direction of the puncture needle is at an angle of 30° to 40° with the abdominal wall when the lower end face of the support tube is pressed against the patient's abdominal wall during use, thus reducing the difficulty of operation and making it highly practical.

[0016] Furthermore, the lower part of the side wall of the support cylinder is provided with an opening.

[0017] This structural design, with its openings, makes it easier for medical staff to observe the puncture needle during the puncture process, making it highly practical.

[0018] Furthermore, the lower part of the support cylinder is provided with a support pad, and the area of ​​the lower end face of the support pad is larger than the area of ​​the lower end face of the support cylinder.

[0019] This structural design increases the contact area between the support cylinder and the human body through the support pad, thereby improving the human body's ability to support the support cylinder, making it highly practical.

[0020] Further, the inner wall of the support cylinder is provided with a protruding ridge in the axial direction, and the outer wall of the cylinder is provided with a limiting groove in the axial direction, with the protruding ridge passing through the limiting groove.

[0021] This structural design, through the setting of protruding ribs and limiting grooves, completes the axial sliding connection between the support cylinder and the cylinder body. The structure is simple, easy to use, and highly practical.

[0022] Further specifying, the locking mechanism includes a rotating ring, a locking block, and an elastic mechanism;

[0023] The rotating ring is rotatably mounted on the support cylinder;

[0024] The rotating ring is provided with a mounting groove, and the rotating ring is provided with a slot hole that communicates with the mounting groove in the axial direction.

[0025] The card block is located in the mounting slot, and a connecting shaft is mounted on the card block, with the connecting shaft passing through the slot hole;

[0026] The side wall of the support cylinder is provided with a sliding groove, and the locking block is slidably installed in the sliding groove;

[0027] The elastic mechanism is installed between the rotating ring and the support cylinder to drive the rotating ring to rotate relative to the support cylinder, thereby causing the inner end of the locking block to abut against the cylinder body.

[0028] This structural design, through the cooperation of the rotating ring, the locking block, and the elastic mechanism, uses the rotation of the rotating ring by the elastic mechanism to drive the inner end of the locking block to abut against the cylinder, thereby achieving the purpose of fixing the support cylinder to the cylinder. When it is necessary to slide the cylinder relative to the support cylinder, the rotating ring is rotated to overcome the prestress of the elastic mechanism, thereby driving the inner end of the locking block to detach from the cylinder. It is convenient to use and highly practical.

[0029] Further, the inner wall of the card block is provided with carding teeth in the transverse direction, and the outer wall of the cylinder is provided with several transverse grooves, which are evenly distributed along the axis of the cylinder.

[0030] This structural design, through the matching of the transverse groove and the locking teeth, increases the friction between the locking block and the cylinder, thereby improving the locking force of the locking mechanism on the cylinder, making it highly practical.

[0031] Further specifying, the elastic mechanism is an arc-shaped compression spring;

[0032] The inner wall of the rotating ring is provided with a first spring groove, and the outer wall of the support cylinder is provided with a second spring groove. The first spring groove and the second spring groove are connected to each other, and the two ends of the arc-shaped compression spring are located in the first spring groove and the second spring groove, respectively.

[0033] This structural design uses an arc-shaped compression spring to form an elastic mechanism. With the addition of a first spring groove and a second spring groove, the elastic mechanism drives the rotating ring to rotate relative to the support cylinder. The structure is simple and highly stable.

[0034] Further specified, the outer wall of the upper end of the support cylinder is provided with an annular groove, and the rotating ring is located in the annular groove;

[0035] A retaining ring is detachably installed at the upper end of the support cylinder above the rotating ring.

[0036] This structural design, through the cooperation of the annular groove and the retaining ring, completes the axial limitation of the rotating ring. Furthermore, the detachable connection between the retaining ring and the support cylinder makes it easier to install the various components, making assembly more convenient and highly practical.

[0037] Furthermore, the lower inner wall of the retaining ring is provided with a buckle, and the inner wall of the support cylinder is provided with a slot.

[0038] This structural design, through the matching of buckles and slots, enables the detachable installation between the support cylinder and the retaining ring. It has a simple structure, is easy to assemble, and is highly practical.

[0039] The utility model adopting the above technical solution has the following advantages:

[0040] 1. Through the locking mechanism, after the puncture needle enters the pericardial cavity, the locking mechanism fixes the support tube to the tube body. Then, by using the patient's body to block the support tube, the puncture needle is prevented from puncturing further, thereby achieving the purpose of fixing the depth of the puncture needle. The operation is simple and the stability is strong.

[0041] 2. By setting the lower end face of the support tube to form an angle of 30° to 40° with the central axis of the support tube, when in use, the lower end face of the support tube is placed against the patient's abdominal wall, which can ensure that the insertion direction of the puncture needle is at an angle of 30° to 40° with the abdominal wall, reducing the difficulty of operation and making it more practical.

[0042] 3. Through the cooperation of the rotating ring, the locking block and the elastic mechanism, the rotation of the rotating ring by the elastic mechanism drives the inner end of the locking block to abut against the cylinder, thereby completing the purpose of fixing the support cylinder to the cylinder; when it is necessary to slide the cylinder relative to the support cylinder, the rotating ring is rotated to overcome the prestress of the elastic mechanism, and the inner end of the locking block is driven to disengage from the cylinder. It is convenient to use and highly practical.

[0043] 4. An elastic mechanism is formed by an arc-shaped compression spring. With the addition of a first spring groove and a second spring groove, the elastic mechanism drives the rotating ring to rotate relative to the support cylinder. The structure is simple and has strong stability. Attached Figure Description

[0044] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0045] Figure 1 This is a schematic diagram of the structure of an embodiment of the pericardial perfusion therapy device of this utility model. Figure 1 ;

[0046] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the pericardial perfusion therapy device of this utility model;

[0047] Figure 3 This is an exploded structural diagram of the support cylinder and locking mechanism in an embodiment of the pericardial perfusion therapy device of this utility model;

[0048] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0049] Figure 5This is a partial cross-sectional view of the locking mechanism after fixing the support cylinder to the cylinder body in an embodiment of the pericardial perfusion therapy device of this utility model;

[0050] Figure 6 This is a partial cross-sectional view of the structure before the locking mechanism fixes the support cylinder to the cylinder body in an embodiment of the pericardial perfusion therapy device of this utility model;

[0051] Figure 7 This is a schematic diagram of the structure of an embodiment of the pericardial perfusion therapy device of this utility model. Figure 2 ;

[0052] Figure 8 This is a schematic diagram of the structure of an embodiment of the pericardial perfusion therapy device of this utility model. Figure 3 ;

[0053] The symbols for the main components are explained below:

[0054] Cylinder 1, transverse groove 10, puncture needle 11, pull rod 12, perforation 120, piston 13.

[0055] Support cylinder 2, opening 20, support pad 201

[0056] 21 protruding ridge, 210 limiting groove

[0057] Annular groove 22, retaining ring 23, buckle 231, slot 232

[0058] Locking mechanism 3, rotating ring 31, mounting groove 311, slot 312,

[0059] Block 32, slide 320, connecting shaft 321, locking tooth 322

[0060] Elastic mechanism 33, first spring groove 331, second spring groove 332. Detailed Implementation

[0061] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. Furthermore, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0062] like Figures 1 to 8 As shown, the present invention provides a pericardial perfusion therapy device, comprising:

[0063] The cylinder 1 has a puncture needle 11 installed at the front end, a pull rod 12 passing through the inside of the cylinder 1, and a piston 13 installed at the end of the pull rod 12 inside the cylinder 1.

[0064] The pull rod 12 and piston 13 are provided with a perforation 120 coaxial with the puncture needle 11, and a sealing plug is provided in the perforation 120 for the guide wire to pass through.

[0065] Support cylinder 2 is axially slidably sleeved on cylinder 1;

[0066] Locking mechanism 3 is installed on support cylinder 2 and is used to fix support cylinder 2 on cylinder body 1.

[0067] The lower end face of the support cylinder 2 forms an angle of 30° to 40° with the central axis of the support cylinder 2.

[0068] In this embodiment, the angle is preferably 35°. In practice, the lower end face of the support cylinder 2 can also be set at other angles with the central axis of the support cylinder 2, depending on the actual situation. In this embodiment, the lower end face of the support cylinder 2 is set at an angle of 30° to 40° with the central axis of the support cylinder 2. During use, the lower end face of the support cylinder 2 is placed against the abdominal wall of the patient, which can ensure that the insertion direction of the puncture needle 11 is at 30° to 40° with the abdominal wall, reducing the difficulty of operation and making it more practical.

[0069] An opening 20 is provided at the lower part of the side wall of the support cylinder 2. In practice, the support cylinder 2 can also be manufactured directly using transparent material, depending on the actual situation. In this embodiment, the opening 20 makes it easier for medical staff to observe the puncture needle 11 during the puncture process, which is more practical.

[0070] The lower part of the support cylinder 2 is provided with a support pad 201, and the area of ​​the lower end face of the support pad 201 is larger than the area of ​​the lower end face of the support cylinder 2.

[0071] By increasing the contact area between the support cylinder 2 and the human body through the support pad 201, the human body's support capacity for the support cylinder 2 is improved, making it highly practical.

[0072] The lower end surface of the support pad 201 is provided with anti-slip texture.

[0073] By adding anti-slip texture, the friction between the support pad 201 and the human body is increased, thereby reducing the relative friction between the support cylinder 2 and the human body. Given the possibility of sliding on the human body, it has strong practical applications.

[0074] The inner wall of the support cylinder 2 is provided with a convex rib 21 in the axial direction, and the outer wall of the cylinder 1 is provided with a limiting groove 210 in the axial direction, with the convex rib 21 passing through the limiting groove 210.

[0075] In practice, depending on the actual situation, a limiting groove 210 can be axially opened on the inner wall of the support cylinder 2, and a protruding rib 21 can be axially set on the outer wall of the cylinder 1. In this embodiment, the axial sliding connection between the support cylinder 2 and the cylinder 1 is completed by setting the protruding rib 21 and the limiting groove 210. The structure is simple, easy to use, and highly practical.

[0076] The locking mechanism 3 includes a rotating ring 31, a locking block 32, and an elastic mechanism 33;

[0077] Rotating ring 31 is rotatably mounted on support cylinder 2;

[0078] The rotating ring 31 has a mounting groove 311 and an axial slot 312 that communicates with the mounting groove 311.

[0079] The locking block 32 is located in the mounting groove 311, and a connecting shaft 321 is mounted on the locking block 32. The connecting shaft 321 passes through the slot 312.

[0080] A groove 320 is provided on the side wall of the support cylinder 2, and the locking block 32 is slidably installed in the groove 320;

[0081] The elastic mechanism 33 is installed between the rotating ring 31 and the support cylinder 2 to drive the rotating ring 31 to rotate relative to the support cylinder 2, thereby causing the inner end of the locking block 32 to abut against the cylinder 1.

[0082] In practice, depending on the actual situation, a hinge block, such as one hinged to the support cylinder 2 and pressed against the cylinder 1 by the elastic mechanism 33, can be selected to fix the support cylinder 2 to the cylinder 1. In this embodiment, through the cooperation of the rotating ring 31, the locking block 32 and the elastic mechanism 33, the rotation of the rotating ring 31 by the elastic mechanism 33 drives the inner end of the locking block 32 to abut against the cylinder 1, thereby achieving the purpose of fixing the support cylinder 2 to the cylinder 1. When it is necessary to slide the cylinder 1 relative to the support cylinder 2, the rotating ring 31 is rotated to overcome the prestress of the elastic mechanism 33, thereby driving the inner end of the locking block 32 to disengage from the cylinder 1. It is convenient to use and highly practical.

[0083] The inner wall of the locking block 32 is provided with locking teeth 322 in the horizontal direction, and the outer wall of the cylinder 1 is provided with several horizontal grooves 10, which are evenly distributed along the axis of the cylinder 1.

[0084] In practice, depending on the actual situation, anti-slip textures can be directly set on the inner wall of the locking block 32 and the outer wall of the cylinder 1. In this embodiment, the friction between the locking block 32 and the cylinder 1 is increased by matching the transverse groove 10 and the locking teeth 322, thereby improving the locking force of the locking mechanism 3 on the cylinder 1, which is highly practical.

[0085] The elastic mechanism 33 is an arc-shaped compression spring;

[0086] The inner wall of the rotating ring 31 is provided with a first spring groove 331, and the outer wall of the support cylinder 2 is provided with a second spring groove 332. The first spring groove 331 and the second spring groove 332 are connected to each other, and the two ends of the arc-shaped compression spring are located in the first spring groove 331 and the second spring groove 332 respectively.

[0087] In practice, depending on the actual situation, an elastic rope can be set between the rotating ring 31 and the support cylinder 2 as an elastic mechanism 33 to achieve the purpose of the elastic mechanism 33 driving the rotating ring 31 to rotate relative to the support cylinder 2. In this embodiment, the elastic mechanism 33 is formed by an arc-shaped compression spring, and with the setting of the first spring groove 331 and the second spring groove 332, the purpose of the elastic mechanism 33 driving the rotating ring 31 to rotate relative to the support cylinder 2 is achieved. The structure is simple and the stability is strong.

[0088] An annular groove 22 is provided on the outer wall of the upper end of the support cylinder 2, and the rotating ring 31 is located in the annular groove 22;

[0089] A retaining ring 23 is detachably installed on the upper end of the support cylinder 2 above the rotating ring 31.

[0090] In practice, depending on the actual situation, the rotating ring 31 can be cut into left and right semicircles, and annular grooves can be opened on its inner wall. Then, an arc-shaped block matching the annular groove can be set on the support cylinder 2. The axial positioning of the rotating ring 31 is completed by the mutual cooperation of the annular groove and the arc-shaped block. Then, the rotating ring 31 is installed by splicing and fixing the two cut semicircles. In this embodiment, the axial positioning of the rotating ring 31 is completed by the cooperation of the annular groove 22 and the retaining ring 23. Then, the detachable connection between the retaining ring 23 and the support cylinder 2 makes it easier to install each component, making the assembly more convenient and practical.

[0091] The lower end of the retaining ring 23 has a buckle 231 on its inner wall, and the inner wall of the support cylinder 2 has a groove 232.

[0092] In practice, depending on the actual situation, options such as opening a threaded blind hole on the support cylinder 2 and inserting a bolt on the retaining ring 23, with the bolt screwed into the threaded blind hole, can be used to achieve detachable installation between the support cylinder 2 and the retaining ring 23. In this embodiment, the detachable installation between the support cylinder 2 and the retaining ring 23 is achieved through the mutual matching of the buckle 231 and the slot 232. The structure is simple, the assembly is convenient, and the practicality is strong.

[0093] In this embodiment, during assembly, the rotating ring 31 is sleeved on the annular groove 22 of the support cylinder 2, so that the mounting groove 311 is aligned with the sliding groove 320. Then, the locking block 32 is inserted into the mounting groove 311 and the sliding groove 320 from the outside in sequence. Then, the connecting shaft 321 is inserted into the slot hole 312, so that the connecting shaft 321 passes through the locking block 32.

[0094] Then, the elastic mechanism 33 is inserted from above the support cylinder 2, so that the two ends of the arc-shaped compression spring are respectively located in the first spring groove 331 and the second spring groove 332;

[0095] Then, the retaining ring 23 is inserted from above the support cylinder 2, so that the buckle 231 is engaged in the slot 232, and the assembly is completed;

[0096] Finally, hold the assembled component and push the rotating ring 31 with your finger to make it rotate counterclockwise, causing the locking block 32 to move outward a bit. Then align the protrusion 21 with the limiting groove 210 so that the cylinder 1 is inserted into the support cylinder 2. After installation, release the pushing on the rotating ring 31. The elastic mechanism 33 drives the rotating ring 31 to rotate clockwise, which in turn drives the locking block 32 to slide towards the cylinder 1, so that the locking teeth 322 of the locking block 32 are engaged in the transverse groove 10 (e.g., Figure 5 (as shown)

[0097] Before use, such as Figure 7 As shown, the puncture needle 11 is aligned with the lower end face of the support cylinder 2;

[0098] In use, hold the support cylinder 2 and push the rotating ring 31 with your fingers to overcome the prestress of the elastic mechanism 33, causing the rotating ring 31 to rotate counterclockwise. This will drive the locking block 32 to slide away from the cylinder 1, thereby causing the locking teeth 322 of the locking block 32 to disengage from the transverse groove 10 (e.g., Figure 6 As shown), at this time, by pushing the cylinder 1 downward, the puncture needle 11 can be used to complete the puncture of the human body;

[0099] After the puncture is completed, the pushing action on the rotating ring 31 is released. The elastic mechanism 33 drives the rotating ring 31 to rotate clockwise, which in turn drives the locking block 32 to slide towards the cylinder 1, thereby causing the locking teeth 322 of the locking block 32 to engage in the transverse groove 10 (e.g., Figure 5 and Figure 8 As shown), this completes the goal of fixing the depth of the puncture needle 11.

[0100] The above provides a detailed description of the pericardial perfusion therapy device provided by this utility model. The specific embodiments are described only to aid in understanding the method and core concept of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A pericardial perfusion therapy device, characterized in that: include: A cylindrical body (1) is provided with a puncture needle (11) installed at the front end of the cylindrical body (1), and a pull rod (12) is provided inside the cylindrical body (1). A piston (13) is installed at the end of the pull rod (12) inside the cylindrical body (1). The pull rod (12) and piston (13) are provided with a perforation (120) coaxial with the puncture needle (11), and a sealing plug is provided in the perforation (120) for the guide wire to pass through; Support cylinder (2), which is axially slidably sleeved on cylinder body (1); Locking mechanism (3) is installed on support cylinder (2) and is used to fix support cylinder (2) on cylinder body (1).

2. The pericardial perfusion therapy device according to claim 1, characterized in that: The lower end face of the support cylinder (2) forms an angle of 30° to 40° with the central axis of the support cylinder (2).

3. The pericardial perfusion therapy device according to claim 1, characterized in that: The lower part of the side wall of the support cylinder (2) is provided with an opening (20).

4. The pericardial perfusion therapy device according to claim 2, characterized in that: The lower part of the support cylinder (2) is provided with a support pad (201), and the area of ​​the lower end face of the support pad (201) is larger than the area of ​​the lower end face of the support cylinder (2).

5. The pericardial perfusion therapy device according to claim 1, characterized in that: The inner wall of the support cylinder (2) is provided with a protruding rib (21) in the axial direction, and the outer wall of the cylinder (1) is provided with a limiting groove (210) in the axial direction, and the protruding rib (21) passes through the limiting groove (210).

6. The pericardial perfusion therapy device according to claim 1, characterized in that: The locking mechanism (3) includes a rotating ring (31), a locking block (32), and an elastic mechanism (33); The rotating ring (31) is rotatably mounted on the support cylinder (2); The rotating ring (31) is provided with an installation groove (311), and the rotating ring (31) is provided with an axial slot (312) that communicates with the installation groove (311). The card block (32) is located in the mounting groove (311), and a connecting shaft (321) is installed on the card block (32), which passes through the slot (312); The side wall of the support cylinder (2) is provided with a sliding groove (320), and the locking block (32) is slidably installed in the sliding groove (320); The elastic mechanism (33) is installed between the rotating ring (31) and the support cylinder (2) to drive the rotating ring (31) to rotate relative to the support cylinder (2), thereby driving the inner end of the locking block (32) to abut against the cylinder (1).

7. The pericardial perfusion therapy device according to claim 6, characterized in that: The inner wall of the card block (32) is provided with card teeth (322) in the horizontal direction, and the outer wall of the cylinder (1) is provided with several horizontal grooves (10), which are evenly distributed along the axis of the cylinder (1).

8. A pericardial perfusion therapy device according to claim 6, characterized in that: The elastic mechanism (33) is an arc-shaped compression spring; The inner wall of the rotating ring (31) is provided with a first spring groove (331), and the outer wall of the support cylinder (2) is provided with a second spring groove (332). The first spring groove (331) and the second spring groove (332) are connected to each other, and the two ends of the arc-shaped compression spring are located in the first spring groove (331) and the second spring groove (332) respectively.

9. A pericardial perfusion therapy device according to claim 6, characterized in that: The outer wall of the upper end of the support cylinder (2) is provided with an annular groove (22), and the rotating ring (31) is located in the annular groove (22); A retaining ring (23) is detachably installed on the upper end of the support cylinder (2) above the rotating ring (31).

10. A pericardial perfusion therapy device according to claim 9, characterized in that: The lower end of the retaining ring (23) is provided with a buckle (231), and the inner wall of the support cylinder (2) is provided with a slot (232).

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