Constant-temperature peristaltic pump

Abstract

The utility model relates to the technical field of ablation needle cooling, in particular to a constant-temperature peristaltic pump which comprises a shell, a constant-temperature peristaltic pump body, a constant-temperature peristaltic pump body and a constant-temperature peristaltic pump body, the shell is internally provided with a cavity, and guide grooves communicated with the cavity are formed in the two side walls of the shell; at least part of the cooling pipe is located in the cavity, and the cooling pipe extends out of the shell through the two guide grooves to form a circulation channel; the cooling plate is arranged in the cavity, located between the cooling pipe and the upper wall face of the cavity and attached to the cooling pipe. According to the utility model, the cooling plate is in seamless contact with the outer wall surface of the cooling pipe, the semiconductor chilling plate is selected, the refrigeration end is quickly cooled after being electrified, the heat of the solution in the cooling pipe is directly absorbed, the solution is ensured to be in a set low-temperature range, and the solution in the cooling pipe can be cooled quickly. The constant-temperature effect is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to ablation needle cooling technical field, especially in a kind of thermostatic peristaltic pump. BACKGROUND

[0002] In minimally invasive ablation surgery, ablation needle is inactivated by heating tumor cells, but a large amount of heat is continuously generated when working.If it cannot be cooled in time, ablation needle is easy to damage, and it will also scald the surrounding normal tissue, affect the operation effect and patient safety.

[0003] Traditional thermostatic peristaltic pump is used for ablation needle cooling, but there are obvious defects.One is that the cooling effect is limited by room temperature, and in high-temperature operation environment, cooling liquid absorbs less heat from the outside, and cannot fully take away the heat of ablation needle, so that the temperature of ablation needle is difficult to control in the safe range, affecting the stability and accuracy of ablation treatment.

[0004] Secondly, when the cooling liquid is reused, the water temperature will rise continuously, and the traditional thermostatic peristaltic pump lacks effective refrigeration mechanism, cannot cool the circulating cooling liquid, and the cooling efficiency is reduced, which cannot meet the high requirement of ablation surgery on cooling effect.

[0005] In order to improve the cooling effect, part of the prior art tries to increase refrigeration structure in thermostatic peristaltic pump, but this leads to complex pump structure, cost increase, volume and weight increase, not only limits the operation space, increases the difficulty and risk of doctor operation, but also improves the failure rate and maintenance cost, limits its wide application in clinical operation.

[0006] Therefore, the present application develops a thermostatic peristaltic pump to solve the problems in the prior art. UTILITY MODEL CONTENTS

[0007] The utility model aims at: providing a thermostatic peristaltic pump to solve the problem of insufficient cooling effect of ablation needle in the prior art.

[0008] The technical scheme of the utility model is: a thermostatic peristaltic pump, comprising:

[0009] A shell is provided with a cavity, and the two side walls of the shell are provided with guide grooves communicating with the cavity;

[0010] Cooling pipe, at least part of the cooling pipe is located in the cavity, and the two guide grooves extend to the outside of the shell to form a circulation channel;

[0011] Cooling plate, set in the cavity, between the cooling pipe and the upper wall of the cavity and attached to the cooling pipe;

[0012] A driving member is rotatably connected in the cavity and abuts against the outer wall of the cooling tube to drive the directional flow of the solution in the cooling tube.

[0013] Preferably, the cooling plate has an arc structure, and the arc is matched with the shape of the inner wall of the cavity.

[0014] Preferably, the height of the guide groove is equal to the diameter of the cooling tube, and the guide groove and the driving member jointly form three supporting points for the cooling tube.

[0015] Preferably, the cooling plate is sleeved on the cooling tube, and a groove is formed on the side surface of the cooling plate in contact with the driving member, so that the driving member and the cooling plate are in effective abutment.

[0016] Preferably, a limiting groove is formed in the side wall of the shell, and the cooling tube is correspondingly embedded in the limiting groove, and the diameter of the limiting groove is matched with the diameter of the cooling tube.

[0017] Preferably, a temperature sensor is fixedly arranged at the side wall of the shell, and the temperature sensor is located on one side of the flow direction of the solution in the cooling tube, so as to accurately monitor the temperature parameter at the position.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] (1) The cooling plate is in seamless contact with the outer wall of the cooling tube, and the semiconductor refrigerating sheet is selected, and the refrigerating end is rapidly cooled after being electrified, directly absorbs the heat of the solution in the cooling tube, ensures that the solution is in the set low temperature range, and guarantees the constant temperature effect.

[0020] (2) The cooling plate has an arc shape, and the arc is matched with the installation position of the inner wall of the cavity, can be tightly attached at all times along with the deformation of the cooling tube, guarantees the rapid and smooth heat transfer, realizes the effective cooling, makes the ablation needle heat radiation uniform by controlling the temperature of the solution in the cooling tube, and the ablation effect is better, the temperature is kept constant, the ablation needle heat change is controlled, the thermal damage to the human body is reduced, and the environmental temperature is not limited.

[0021] (3) The cooling plate is sleeved on the cooling tube, tightly wraps to form large-area stable contact, efficiently transfers heat, and has better cooling effect, and the groove is formed on the contact surface of the cooling plate and the driving member, and the driving member is contacted, and the circulation of the solution in the cooling tube is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further described in connection with the drawings and examples:

[0023] Figure 1 This is a schematic diagram of the structure of a constant temperature peristaltic pump according to the present invention;

[0024] Figure 2 This is a front view of a thermostatic peristaltic pump according to the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the cooling plate and cooling pipe in another embodiment of the present invention.

[0026] The components include: 1. Housing; 11. Cavity; 12. Guide groove; 2. Cooling pipe; 3. Cooling plate; 4. Drive component; 5. Groove; 6. Limiting groove; 7. Temperature sensor. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to specific embodiments:

[0028] like Figures 1-2 As shown, a constant temperature peristaltic pump includes a housing 1, a cooling pipe 2, a cooling plate 3, and a drive component 4. The housing 1 serves as a support frame and has an internal cavity 11 to provide installation and operating space for the cooling pipe 2 and the drive component 4. Guide grooves 12, which communicate with the cavity 11, are respectively opened on the two side walls of the housing 1 to provide channels for the entry and exit of the cooling pipe 2. Part of the cooling pipe 2 is placed inside the cavity 11 of the housing 1, and the rest extends to the outside of the housing 1 through the guide grooves 12 on both sides, connecting to the saline bag and the ablation needle to form a closed circulation channel. By rotating the drive component 4, which is connected to the cavity 11 and abuts against the cooling pipe 2, the solution in the cooling pipe 2 flows in a directional direction, thereby continuously circulating the solution and cooling the ablation needle.

[0029] In this embodiment, a cooling plate 3 is provided between the cooling pipe 2 and the upper wall of the cavity 11 of the housing 1. The cooling plate 3 is in seamless contact with the outer wall of the cooling pipe 2, thereby ensuring efficient heat transfer between the two. The cooling plate 3 is a semiconductor refrigeration chip. When a DC voltage is applied to the semiconductor refrigeration chip to achieve energization, charge carriers move directionally inside it, forming a significant temperature difference between the cooling end and the heating end, where the cooling end can rapidly reduce the temperature. In this embodiment, the cooling end of the energized cooling plate 3 is in direct contact with the cooling pipe 2, continuously absorbing the heat from the ablation needle absorbed by the circulating solution in the cooling pipe 2, effectively reducing the temperature of the cooling pipe 2, thereby ensuring that the solution in the cooling pipe 2 is always within the set low temperature range, ensuring a constant temperature effect.

[0030] Specifically, the cooling plate 3 is in an arc structure, the arc is matched with the shape of the inner wall of the cavity 11 at the installation position, when the driving member 4 rotates in the cavity 11, it drives the cooling pipe 2 to deform correspondingly, and the outer wall surface of the cooling pipe 2 can always be in close contact with the cooling plate 3, so that the heat can be quickly and smoothly transferred from the cooling pipe 2 to the cooling plate 3, and then dissipated, thereby achieving the effect of cooling.

[0031] Further, the height of the guide groove 12 on the two side walls of the shell 1 is equal to the diameter of the cooling pipe 2, and the guide groove 12 has an effective lateral deviation limiting effect on the cooling pipe 2 due to the height matching the diameter of the cooling pipe 2, when the cooling pipe 2 is driven by the driving member 4 to transport the solution and move correspondingly, the two side walls of the guide groove 12 will prevent the cooling pipe 2 from unnecessary left and right shaking or deviating from the predetermined track in the horizontal direction, so as to ensure that the cooling pipe 2 always moves along the established path, thereby ensuring the stability and accuracy of the solution transportation.

[0032] At the same time, the height of the guide groove 12 also restricts the vertical displacement of the cooling pipe 2, and the guide groove 12 provides reliable vertical support for the cooling pipe 2 through the groove structure with the same height as the diameter of the cooling pipe 2, to prevent the cooling pipe 2 from excessive upward movement or sinking in the vertical direction, so as to keep the cooling pipe 2 in a stable position in the vertical space.

[0033] In addition, the guide groove 12 cooperates with the driving member 4 in the cavity 11 to form a stable three-point support structure, so that the contact area between the cooling pipe 2 and the cooling plate 3 is increased, and the cooling pipe 2 cannot fall down between the driving member 4 and the guide groove 12, so as to keep the close contact state, thereby causing poor cooling effect.

[0034] In another embodiment, as shown in Figure 3 the cooling plate 3 is installed on the cooling pipe 2 in a sleeved manner, that is, the cooling plate 3 tightly wraps the outer surface of the cooling pipe 2 with the cooling pipe 2 as the shaft body, so that a large area and stable contact is formed between the cooling plate 3 and the cooling pipe 2, which can ensure efficient heat transfer between them, so that the cooling effect is better; a groove 5 is formed on the side surface of the cooling plate 3 in contact with the driving member 4, so that the driving member 4 can contact the cooling pipe 2, and when the driving member 4 rotates to push the solution in the cooling pipe 2 to flow directionally, part of the structure of the driving member 4 will be embedded into the groove 5 on the surface of the cooling plate 3.

[0035] Further, by controlling the temperature of the solution in the cooling tube 2, the heat radiation of the ablation needle can be more uniform, the ablation effect is better, and because the temperature can be kept constant, the heat change of the ablation needle can be controlled, thereby reducing the thermal damage to the human body and not being limited by the ambient temperature, and without increasing the related structure in other parts of the cooling tube 2, without additional control, increasing the complexity of the operation.

[0036] The side wall of the shell 1 is provided with a limiting groove 6, and the cooling tube 2 is correspondingly embedded and placed in the limiting groove 6, and the diameter of the limiting groove 6 is matched with the diameter of the cooling tube 2, so that the cooling tube 2 can be accurately positioned and stably placed in the limiting groove 6, effectively avoiding the shaking and displacement of the cooling tube 2 during the operation.

[0037] The temperature sensor 7 is fixedly arranged at the position of the side wall of the shell 1, and the temperature sensor 7 is located on one side of the solution flowing direction in the cooling tube 2, so as to accurately monitor the temperature parameter at the position, and the temperature measured by the temperature sensor 7 can control the size of the current of the semiconductor refrigeration sheet, so that the cooling effect is optimal, the ablation effect is better, and the possibility of thermal damage is avoided.

[0038] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application, therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A thermostatic peristaltic pump characterized by, The utility model relates to a cooling device, including: The shell (1) is equipped with the cavity (11) in the shell (1), and the two side walls of the shell (1) are equipped with the guide groove (12) that communicates with the cavity (11); Cooling pipe (2), at least part of the cooling pipe (2) is located in the cavity (11), and the circulation channel is formed to the shell (1) outside through two guide grooves (12); Cooling plate (3) is arranged in the cavity (11), and is located between the cooling pipe (2) and the upper wall of the cavity (11) and is attached to the cooling pipe (2); Driving part (4) is rotatably connected in the cavity (11), and the outer wall surface of the cooling pipe (2) is abutted to drive the directional flow of the solution in the cooling pipe (2).

2. A thermostatic peristaltic pump according to claim 1, characterized in that: The cooling plate (3) is arc-shaped structure, and the arc is matched with the shape of the inner wall of the cavity (11), when the driving part (4) rotates, the outer wall surface of the cooling pipe (2) is always closely attached to the cooling plate (3).

3. A thermostatic peristaltic pump according to claim 1, characterized in that: The height of the guide groove (12) is equal to the diameter of the cooling pipe (2), the support effect of limiting transverse deviation and vertical displacement is formed with the driving part (4) and the three support point structure of the cooling pipe (2) is formed.

4. The thermostatic peristaltic pump of claim 1, wherein: The cooling plate (3) is arranged on the cooling pipe (2) in a sleeved manner, and the side surface of the cooling plate (3) in contact with the driving part (4) is provided with a groove (5), and the effective abutment between the driving part (4) and the cooling plate (3) is formed through the groove (5).

5. The thermostatic peristaltic pump of claim 1, wherein: The side wall of the shell (1) is provided with a limiting groove (6), the cooling pipe (2) is correspondingly embedded and placed in the limiting groove (6), and the diameter of the limiting groove (6) is matched with the diameter of the cooling pipe (2).

6. A thermostatic peristaltic pump according to claim 1, characterized in that: The temperature sensor (7) is fixedly arranged at the side wall position of the shell (1), and the temperature sensor (7) is located at one side of the solution flow direction in the cooling pipe (2), so as to accurately monitor the temperature parameter at the position.

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