Atrial fibrillation cryotherapeutic apparatus

Abstract

The utility model provides an atrial fibrillation cryotherapeutic apparatus which comprises a cryoablation liquid cylinder, a conveying pump is arranged on the circumferential face of the cryoablation liquid cylinder in a communicated mode, and a liquid inlet pipe is arranged on the top of the conveying pump in a communicated mode. A conveying catheter is arranged at the top of the cryoablation liquid cylinder, and a limiting assembly is fixedly arranged at the top of the conveying catheter; the end, away from the conveying pump, of the liquid inlet pipe penetrates through the limiting assembly and communicates with a liquid conveying pipe. The infusion tube is arranged in the conveying catheter through the clamping assembly. The device can adapt to different sizes of wounds of patients, and infusion tubes of different sizes are limited and fixed by controlling the adjusting assembly.

Description

Technical Field

[0001] This utility model belongs to the field of cryotherapy technology, specifically relating to a cryotherapy device for atrial fibrillation. Background Technology

[0002] Atrial fibrillation (AF) is a supraventricular arrhythmia characterized by rapid, disordered atrial electrical activity. AF can cause symptoms such as palpitations, chest tightness, chest pain, and dizziness. Cryotherapy can be used clinically to treat AF. Cryotherapy is a medical device that uses physical methods, employing cooling substances and cryotherapy equipment to generate low temperatures that destroy or remove human tissue, thereby achieving the purpose of treating the disease. It has advantages such as convenient operation, good therapeutic effect, high safety, no side effects, and short recovery time.

[0003] A patent with publication number CN220025180U discloses a cryoablation device for lung tumors, including a cryoablation fluid cylinder. A delivery pump is fixedly installed on the circumference of the cryoablation fluid cylinder. An inlet pipe is connected to the top of the delivery pump, and an infusion pipe is movably connected to the end of the inlet pipe away from the delivery pump. A delivery conduit is fixedly installed on the top of the cryoablation fluid cylinder, and the infusion pipe is located inside the delivery conduit. Two limiting connecting plates are fixedly installed on the top inner wall of the delivery conduit. Limiting blocks are symmetrically arranged on the facing surfaces of the two limiting connecting plates. The infusion pipe is located between the two limiting connecting plates and abuts against the limiting connecting plates.

[0004] The device secures the IV tubing by first connecting the inlet tube to the IV tubing, then placing the IV tubing between two connecting plates. The limiting block engages with the connecting plates to secure the IV tubing. Since patients' wound sizes vary, the device needs to clamp and limit IV tubing of different sizes; however, the limiting block cannot be adjusted. After insertion, the IV tubing may be too large, causing deformation due to compression and obstructing coolant delivery; conversely, it may be too small, leading to insecure fixation and slippage. Overall, the device has certain limitations. Utility Model Content

[0005] To address the problems existing in the background technology, this utility model provides an atrial fibrillation cryotherapy device.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A cryotherapy device for atrial fibrillation includes a cryoablation fluid cylinder, a delivery pump connected to the circumferential surface of the cryoablation fluid cylinder, and an inlet pipe connected to the top of the delivery pump; a delivery conduit is provided at the top of the cryoablation fluid cylinder, and a limiting component is fixedly provided at the top of the delivery conduit; an infusion pipe is connected to the end of the inlet pipe away from the delivery pump through the limiting component; the infusion pipe is positioned inside the delivery conduit by a clamping component.

[0008] Furthermore, the limiting component includes a limiting plate, the bottom of which is fixedly connected to the top of the delivery conduit; a circular hole is provided on the side of the limiting plate, and the end of the inlet pipe away from the delivery pump passes through the circular hole; a threaded groove is provided on the top of the limiting plate, and the threaded groove communicates with the circular hole; a bolt is threaded through the threaded groove, and the bolt is made of plastic.

[0009] Furthermore, a second circular hole is provided on the circumference of the infusion tube, and the end of the inlet tube away from the delivery pump passes through the second circular hole and is connected to the infusion tube.

[0010] Furthermore, the bottom of the infusion tube is sealed.

[0011] Furthermore, the clamping assembly includes a clamping block, and two clamping plates are fixedly and symmetrically arranged on the inner wall of the delivery conduit. Several clamping slots are symmetrically opened on the facing surfaces of the two clamping plates. The clamping block is engaged in the clamping slots, and the shapes of the clamping slots and the two ends of the clamping block are mutually compatible. The infusion tube is located between the two clamping plates.

[0012] Furthermore, the clamping assembly includes an elastic plate, and a connecting plate is fixedly disposed on the circumferential surface of the upper inner part of the delivery conduit. One end of the connecting plate is fixedly connected to one end of the elastic plate. A movable plate is fixedly disposed on the other end of the connecting plate, and a plurality of locking teeth are fixedly disposed on the end of the elastic plate away from the connecting plate. The movable plate cooperates with the locking teeth on the elastic plate.

[0013] This application has the following beneficial effects:

[0014] The device can adapt to different wound sizes and can limit and fix infusion tubes of different sizes by controlling the adjustment components. Attached Figure Description

[0015] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0016] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0017] Figure 2 This is a utility model Figure 1 A magnified view of a portion of point A in the middle;

[0018] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0019] Figure 4 This is a utility model Figure 3 A magnified view of a portion of point B in the middle;

[0020] Figure 5 This is a schematic diagram of the elastic plate structure of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Cryoablation fluid cylinder; 2. Delivery conduit; 3. Delivery pump; 4. Infusion tube; 5. Clamping block; 6. Clamping plate; 7. Inlet pipe; 8. Limiting plate; 9. Elastic plate; 10. Movable plate; 11. Connecting plate; 12. Bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Example 1

[0025] like Figures 1-2 As shown, the technical solution adopted by this utility model is as follows: an atrial fibrillation cryotherapy device, including a cryoablation fluid cylinder 1, a delivery pump 3 is connected to the circumferential surface of the cryoablation fluid cylinder 1, and an inlet pipe 7 is connected to the top of the delivery pump 3.

[0026] The top of the cryoablation fluid cylinder 1 is fixedly provided with a delivery conduit 2, and the top of the delivery conduit 2 is fixedly provided with a limiting component; the limiting component includes a limiting plate 8, the bottom of the limiting plate 8 is fixedly connected to the top of the delivery conduit 2; a circular hole is opened on the side of the limiting plate 8, and the end of the liquid inlet pipe 7 away from the delivery pump 3 passes through the circular hole; a threaded groove is opened on the top of the limiting plate 8, and the threaded groove communicates with the circular hole; a bolt 12 is threaded through the threaded groove, and the bolt 12 is made of plastic.

[0027] Tightening the bolts 12 on the limiting plate 8 can compress the inlet pipe 7, thereby limiting and fixing the inlet pipe 7 and preventing it from sliding. Since the bolts 12 are made of plastic, they will not damage the inlet pipe 7 during the tightening process.

[0028] The end of the inlet pipe 7 away from the delivery pump 3 passes through a circular hole on the limiting plate 8 and is connected to the delivery pipe 4. A second circular hole is opened on the circumference of the delivery pipe 4, and the end of the inlet pipe 7 away from the delivery pump 3 passes through the second circular hole and is connected to the delivery pipe 4. The bottom of the delivery pipe 4 is sealed to prevent coolant from flowing out from the bottom of the delivery pipe 4.

[0029] The infusion tube 4 is installed inside the delivery conduit 2 via a clamping assembly.

[0030] The clamping assembly includes a clamping block 5. Two clamping plates 6 are symmetrically fixed to the inner wall of the delivery conduit 2, and two clamping slots are symmetrically formed on the facing surfaces of the two clamping plates 6. The clamping block 5 is engaged in the clamping slots, and the shapes of the clamping slots and the two ends of the clamping block 5 are compatible. The infusion tube 4 is located between the two clamping plates 6. The clamping block 5 is engaged in the appropriate clamping slot according to the size of the infusion tube 4, thereby limiting and fixing the infusion tube 4. The two ends of the clamping block 5 are arc-shaped, and the clamping slots on the clamping plates 6 are adapted to the end structure of the clamping block 5.

[0031] By activating the delivery pump 3, the delivery pump 3 will deliver the coolant in the cryoablation fluid cylinder 1 through the inlet pipe 7 to the infusion pipe 4, and then through the infusion pipe 4 to the patient's wound, so as to facilitate cryoablation of the patient's wound.

[0032] Working principle

[0033] When the operator needs to secure the infusion tube 4, first pass the end of the infusion tube 7 away from the delivery pump 3 through the circular hole on the limiting plate 8, and place the infusion tube 4 between the two clamping plates 6. Then connect the end of the infusion tube 7 that passes through the circular hole to the infusion tube 4. After the infusion tube 4 is connected to the infusion tube 7, the infusion tube 7 is limited and fixed by rotating the bolt 12. Then, according to the size of the infusion tube 4, the clamping block 5 is engaged in the appropriate clamping groove, thereby limiting and fixing the infusion tube 4.

[0034] Next, the delivery pump 3 is started. The delivery pump 3 will deliver the coolant in the cryoablation fluid cylinder 1 through the inlet pipe 7 to the infusion pipe 4, and then through the infusion pipe 4 to the patient's wound, so as to facilitate cryoablation of the patient's wound.

[0035] The bolts 12 on the limiting plate 8 serve to limit and fix the inlet tube 7, allowing the inlet tube 7 to be inserted into the infusion tube 4, ensuring the normal use of the inlet tube 7, and making the treatment device more stable during ablation.

[0036] Example 2

[0037] like Figures 3-5As shown, unlike Embodiment 1, the clamping assembly in Embodiment 2 includes an elastic plate 9. The elastic plate 9 is heat-formed into a desired initial shape. In order for the elastic plate 9 to return to its initial shape after being pulled, the elastic plate 9 is specifically a metal elastic sheet.

[0038] A connecting plate 11 is fixedly installed on the circumferential surface of the upper inner part of the delivery conduit 2. One end of the connecting plate 11 is fixedly connected to one end of the elastic plate 9. A movable plate 10 is fixedly installed on the other end of the connecting plate 11. Several locking teeth are fixedly installed on the end of the elastic plate 9 away from the connecting plate 11. The movable plate 10 cooperates with the locking teeth on the elastic plate 9.

[0039] By pulling the elastic plate 9, the infusion tube 4 is placed between the movable plate 10 and the elastic plate 9, and the infusion tube 4 is attached to the inside of the connecting plate 11. Then, the elastic plate 9 is released. Since the elastic plate 9 is made of shape memory alloy, it will reset. At this time, by pressing the movable plate 10, the movable plate 10 is locked in the teeth of the elastic plate 9, thereby limiting and fixing the infusion tube 4.

[0040] Working principle

[0041] Unlike Embodiment 1, Embodiment 2 fixes the infusion tube 4 by pulling the elastic plate 9, placing the infusion tube 4 between the movable plate 10 and the elastic plate 9, and attaching the infusion tube 4 to the inner side of the connecting plate 11. Then, the elastic plate 9 is released; since the elastic plate 9 is made of shape memory alloy, it will reset. At this point, pressing the movable plate 10 causes it to engage within the teeth of the elastic plate 9, thereby limiting and fixing the infusion tube 4. This fixing method facilitates the fixing and clamping of infusion tubes 4 of different sizes, and during use, the infusion tube 4 is less prone to displacement, avoiding inaccurate ablation due to displacement of the infusion tube 4.

Claims

1. A cryotherapy device for atrial fibrillation, characterized in that, The device includes a cryoablation fluid cylinder (1), a delivery pump (3) is connected to the circumference of the cryoablation fluid cylinder (1), and an inlet pipe (7) is connected to the top of the delivery pump (3); a delivery conduit (2) is provided at the top of the cryoablation fluid cylinder (1), and a limiting component is fixedly provided at the top of the delivery conduit (2); an infusion pipe (4) is connected to the end of the inlet pipe (7) away from the delivery pump (3) through the limiting component; and the infusion pipe (4) is set inside the delivery conduit (2) by a clamping component.

2. The atrial fibrillation cryotherapy device according to claim 1, characterized in that, The limiting component includes a limiting plate (8), the bottom of which is fixedly connected to the top of the delivery conduit (2); a circular hole is provided on the side of the limiting plate (8), and the end of the inlet pipe (7) away from the delivery pump (3) passes through the circular hole; a threaded groove is provided on the top of the limiting plate (8), and the threaded groove communicates with the circular hole; a bolt (12) is threaded through the threaded groove, and the bolt (12) is made of plastic.

3. The atrial fibrillation cryotherapy device according to claim 1, characterized in that, The infusion tube (4) has a second circular hole on its circumference. The end of the inlet tube (7) away from the delivery pump (3) passes through the second circular hole and is connected to the infusion tube (4).

4. The atrial fibrillation cryotherapy device according to claim 3, characterized in that, The bottom of the infusion tube (4) is sealed.

5. The atrial fibrillation cryotherapy device according to claim 1, characterized in that, The clamping assembly includes a clamping block (5), and two clamping plates (6) are fixedly and symmetrically arranged on the inner wall of the delivery conduit (2). Several clamping slots are symmetrically opened on the facing surfaces of the two clamping plates (6). The clamping block (5) is clamped in the clamping slot, and the shapes of the clamping slot and the two ends of the clamping block (5) match each other. The infusion tube (4) is located between the two clamping plates (6).

6. The atrial fibrillation cryotherapy device according to claim 1, characterized in that, The clamping assembly includes an elastic plate (9), and a connecting plate (11) is fixedly disposed on the circumferential surface of the upper inner part of the delivery conduit (2). One end of the connecting plate (11) is fixedly connected to one end of the elastic plate (9). A movable plate (10) is fixedly disposed on the other end of the connecting plate (11). A plurality of locking teeth are fixedly disposed on the end of the elastic plate (9) away from the connecting plate (11). The movable plate (10) engages with the locking teeth on the elastic plate (9).

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