Cryoablation device

Abstract

The utility model discloses a cryoablation device which comprises a cryoablation liquid cylinder, a conveying pump is arranged on the side face of the cryoablation liquid cylinder, a conveying guide pipe is arranged at the top of the cryoablation liquid cylinder, a liquid inlet pipe is arranged at the top of the conveying pump, and a liquid conveying pipe is arranged in an inner cavity of the conveying guide pipe. According to the cryoablation device, in the using process, the liquid inlet pipe penetrates through the bottom end of the plastic hard pipe, then the threaded pipe is rotated, the threaded pipe drives the connecting ring and the conical barrel to move upwards, the liquid inlet pipe is connected with the liquid inlet pipe, the liquid inlet pipe is connected with the liquid inlet pipe, and the liquid inlet pipe is connected with the liquid inlet pipe. Through the arrangement of the expansion joint, the bottom end of the plastic hard tube is tightened towards the liquid inlet tube, so that the liquid inlet tube is fixed, compared with the prior art, the device can fix the liquid inlet tube, the situation that the liquid inlet tube falls off is avoided, and normal operation of ablation work is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of ablation devices, in particular to a cryoablation device. Background Art

[0002] Cryoablation is the use of cryogenic sources to release cryogenic energy to inactivate diseased tissues in the human body to achieve the purpose of treatment. Cryoablation technology is used clinically for tumor treatment, atrial fibrillation treatment, etc. Compared with previous radiofrequency ablation, cryoablation reduces pain because patients do not have to endure high temperatures. It is a minimally invasive ablation treatment technology and is becoming the forefront of contemporary clinical medicine. Cryoablation is one of the representative technologies. It mainly uses low-temperature instruments to control the cooling, freezing, and rewarming of the lesion tissue, thereby causing irreversible damage or even necrosis of tumor cells. It is often used in the treatment of lung tumors.

[0003] The infusion tube used to assist the existing cryoablation device for lung tumors cannot be fixed inside the delivery catheter during use, and is easily deviated during use, resulting in inaccurate ablation. The effect during use is poor, and this needs to be improved.

[0004] The existing Chinese patent CN220025180U is a cryoablation device for lung tumors. When solving the above problem, the liquid inlet tube is only connected to the inner wall of the limiting ring. No fixing mechanism is set between the liquid inlet tube and the limiting ring. The liquid inlet tube is easy to fall off, thereby affecting the normal operation of the liquid inlet tube and further affecting the normal progress of the ablation work. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a cryoablation device.

[0006] One of the purposes of the utility model is achieved by the following technical solution:

[0007] A cryoablation device comprises a cryoablation liquid cylinder, a delivery pump is arranged on the side of the cryoablation liquid cylinder, a delivery catheter is arranged on the top of the cryoablation liquid cylinder, a liquid inlet tube is arranged on the top of the delivery pump, an infusion tube is arranged in the inner cavity of the delivery catheter, a mounting seat is fixedly connected to the top of the delivery catheter near the left side, a plastic hard tube is fixedly connected to the top of the mounting seat, a sealing ring is fixedly inserted on the left side of the infusion tube near the top, an end of the liquid inlet tube away from the delivery pump movably passes through the plastic hard tube and the sealing ring, a threaded tube and a connecting ring are movably sleeved on the outer edge of the plastic hard tube near the bottom end, a conical tube is fixedly connected to the inner cavity of the connecting ring, and a plurality of expansion joints are opened at the outer edge of the plastic hard tube near the bottom end.

[0008] Furthermore, the threaded tube is threadedly connected to the plastic hard tube, and an outer edge of the plastic hard tube is provided with an external thread near the bottom end.

[0009] Furthermore, the threaded tube and the connecting ring are fixedly connected, and the inner wall of the conical tube and the plastic hard tube are in contact with each other.

[0010] Furthermore, a limiter is movably sleeved on the outer edge of the infusion tube, and the limiter is fixedly connected to the mounting seat.

[0011] Furthermore, the cross section of the limiting member is U-shaped, and the U-shaped opening faces one side of the mounting seat.

[0012] Furthermore, the cross section of the plastic hard tube is arc-shaped.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. During the use of the cryoablation device of the utility model, the liquid inlet tube is passed through the bottom end of the plastic hard tube, and then the threaded tube is rotated, and the threaded tube drives the connecting ring and the conical tube to move upward. Through the setting of the expansion joint, the bottom end of the plastic hard tube is tightened toward the direction of the liquid inlet tube, thereby fixing the liquid inlet tube. Compared with the prior art, the device can fix the liquid inlet tube to prevent the liquid inlet tube from falling off, thereby ensuring the normal progress of the ablation work;

[0015] 2. The utility model provides a cryoablation device. The setting of the sealing ring can improve the sealing performance between the liquid inlet tube and the delivery catheter. The cross-section of the plastic hard tube is set to be arc-shaped to avoid bending of the liquid inlet tube, thereby ensuring the normal liquid inlet operation of the liquid inlet tube.

[0016] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front perspective view of the present embodiment;

[0018] Figure 2 is a top perspective view of this embodiment;

[0019] Figure 3 For this embodiment Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 It is a front perspective view of the plastic hard pipe component of this embodiment;

[0021] Figure 5 It is a front perspective view of the expansion joint of the component of this embodiment;

[0022] Figure 6 It is a cross-sectional view of the connecting ring of the component of this embodiment.

[0023] In the figure: 1. Cryoablation liquid cylinder; 2. Delivery catheter; 3. Infusion tube; 4. Plastic hard tube; 5. Mounting seat; 6. Limiting piece; 7. Sealing ring; 8. Liquid inlet tube; 9. Delivery pump; 10. External thread; 11. Expansion joint; 12. Threaded tube; 13. Connecting ring; 14. Conical cylinder. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] Please refer to Figures 1 to 6 A cryoablation device comprises a cryoablation liquid cartridge 1, a delivery pump 9 is arranged on the side of the cryoablation liquid cartridge 1, a delivery catheter 2 is arranged on the top of the cryoablation liquid cartridge 1, a liquid inlet pipe 8 is arranged on the top of the delivery pump 9, an infusion tube 3 is arranged in the inner cavity of the delivery catheter 2, a limiter 6 is movably sleeved on the outer edge of the infusion tube 3, the limiter 6 is fixedly connected to the mounting seat 5, the cross section of the limiter 6 is U-shaped, and the U-shaped opening faces one side of the mounting seat 5, the top of the delivery catheter 2 is fixedly connected with the mounting seat 5 near the left side, the top of the mounting seat 5 is fixedly connected with a plastic hard tube 4, a sealing ring 7 is fixedly inserted at the left side of the infusion tube 3 near the top, and the end of the liquid inlet pipe 8 away from the delivery pump 9 movably passes through the plastic hard tube 4 and the sealing ring 7;

[0028] The provision of the sealing ring 7 can improve the sealing performance between the liquid inlet pipe 8 and the delivery conduit 2;

[0029] The cross section of the plastic hard tube 4 is arc-shaped, and a threaded tube 12 and a connecting ring 13 are movably sleeved near the bottom end of the outer edge of the plastic hard tube 4, and a conical tube 14 is fixedly connected to the inner cavity of the connecting ring 13. A plurality of expansion joints 11 are provided near the bottom end of the outer edge of the plastic hard tube 4, and the threaded tube 12 and the plastic hard tube 4 are threadedly connected, and an external thread 10 is provided near the bottom end of the outer edge of the plastic hard tube 4, and the threaded tube 12 and the connecting ring 13 are fixedly connected, and the inner wall of the conical tube 14 fits the plastic hard tube 4.

[0030] The cross section of the plastic hard tube 4 is arranged to be arc-shaped, so as to avoid the liquid inlet tube 8 from bending, thereby ensuring the normal liquid inlet operation of the liquid inlet tube 8 .

[0031] Working principle: The utility model is a cryoablation device. During use, the liquid inlet tube 8 is passed through the bottom end of the plastic hard tube 4 and the sealing ring 7, and then the threaded tube 12 is rotated. The threaded tube 12 moves upward relative to the plastic hard tube 4 under the action of the thread, and the threaded tube 12 drives the connecting ring 13 and the conical tube 14 to move upward. When the conical tube 14 moves upward, it squeezes the expansion joint 11 at the bottom end of the plastic hard tube 4. Through the setting of the expansion joint 11, the bottom end of the plastic hard tube 4 is tightened toward the direction of the liquid inlet tube 8, thereby fixing the liquid inlet tube 8. Compared with the prior art, the device can fix the liquid inlet tube 8 to prevent the liquid inlet tube 8 from falling off, thereby ensuring the normal progress of the ablation work;

[0032] The setting of the sealing ring 7 can improve the sealing performance between the liquid inlet pipe 8 and the delivery conduit 2. The cross-section of the plastic hard tube 4 is set to be arc-shaped to avoid bending of the liquid inlet pipe 8, thereby ensuring the normal liquid inlet operation of the liquid inlet pipe 8;

[0033] The cooling liquid can be introduced into the infusion tube 3 through the delivery pump 9 and the liquid inlet tube 8 to facilitate cryoablation. The delivery pump 9, the liquid inlet tube 8, the infusion tube 3 and the delivery catheter 2 are all prior arts, and the working principles are well known to those skilled in the art.

[0034] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A cryoablation device, comprising a cryoablation liquid cartridge (1), a delivery pump (9) is arranged on the side of the cryoablation liquid cartridge (1), a delivery catheter (2) is arranged on the top of the cryoablation liquid cartridge (1), a liquid inlet tube (8) is arranged on the top of the delivery pump (9), and an infusion tube (3) is arranged in the inner cavity of the delivery catheter (2), characterized in that: A mounting seat (5) is fixedly connected to the top of the delivery conduit (2) near the left side, a plastic hard tube (4) is fixedly connected to the top of the mounting seat (5), a sealing ring (7) is fixedly inserted into the left side of the infusion tube (3) near the top, one end of the inlet tube (8) away from the delivery pump (9) movably penetrates the plastic hard tube (4) and the sealing ring (7), a threaded tube (12) and a connecting ring (13) are movably sleeved on the outer edge of the plastic hard tube (4) near the bottom end, the inner cavity of the connecting ring (13) is fixedly connected to a conical cylinder (14), and a plurality of expansion joints (11) are provided on the outer edge of the plastic hard tube (4) near the bottom end.

2. A cryoablation device according to claim 1, characterized in that: The threaded tube (12) is threadedly connected to the plastic hard tube (4), and an external thread (10) is provided on the outer edge of the plastic hard tube (4) near the bottom end.

3. A cryoablation device according to claim 1, characterized in that: The threaded tube (12) and the connecting ring (13) are fixedly connected, and the inner wall of the conical tube (14) and the plastic hard tube (4) are in contact with each other.

4. A cryoablation device according to claim 1, characterized in that: A limiting member (6) is movably sleeved on the outer edge of the infusion tube (3), and the limiting member (6) is fixedly connected to the mounting seat (5).

5. A cryoablation device according to claim 4, characterized in that: The cross section of the limiting member (6) is U-shaped, and the U-shaped opening faces one side of the mounting seat (5).

6. A cryoablation device according to claim 1, characterized in that: The cross section of the plastic hard tube (4) is arc-shaped.

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