A tube-pulling device for embryo laboratory

Abstract

This utility model belongs to the technical field of embryo laboratory tools, specifically a tube-pulling device for embryo laboratories. It includes a base plate, a positioning sleeve fixed to the center of the top surface of the base plate, and guide rods symmetrically arranged on both sides of the positioning sleeve. The lower ends of the guide rods are fixed to the top surface of the base plate. A stretching tube is inserted into the inner side of the positioning sleeve, and a pulling assembly is sleeved on the outer top of the stretching tube. The pulling assembly includes a pulling sleeve, a second connecting rod, and a second movable sleeve. The pulling sleeve is sleeved on the outer upper end of the stretching tube. With this utility model, the operator pulls the pulling sleeve to stretch the stretching tube. During stretching, the second movable sleeve moves on the guide rod, causing the pulling sleeve to stretch the stretching tube vertically. This avoids the tube bending easily due to gravity during conventional horizontal stretching, and also avoids the adverse effects of operator hand shaking on the stretching tube. This allows the operator to focus more on controlling the stretching speed and improves the overall stability of the operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of embryo experimental tools, specifically relating to a tube-pulling device for embryo laboratory use. Background Technology

[0002] A pasteurized tube is a type of suction tube used by researchers to transfer embryos during assisted reproductive technology. Before use, the tube is stretched over a flame to a certain diameter, and then a suction tip is attached to transfer the embryo.

[0003] Currently, when operators perform the drawing operation of pasteurized tubes, they generally use tools to clamp the tube body and then manually stretch it. If the operator's hands are unstable during the stretching process, the thin tube is prone to bending and twisting, affecting the subsequent use effect. Moreover, the control of the stretched length or the tube diameter after stretching depends on the operator's experience. If the control is not precise enough, it will result in more defective products and easily lead to waste of tube materials. Therefore, it is necessary to propose a tube drawing device for embryo laboratory to solve the above problems. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides a tube-pulling device for embryo laboratories, which is convenient to operate, stable, and highly practical.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tube-pulling device for an embryo laboratory, comprising a base plate, a positioning sleeve fixed in the middle of the top surface of the base plate, guide rods symmetrically arranged on both sides of the positioning sleeve, the lower end of the guide rods fixed to the top surface of the base plate, a stretching tube inserted into the inner side of the positioning sleeve, a traction assembly sleeved on the outer side of the top of the stretching tube, the traction assembly comprising a traction sleeve, a second connecting rod, and a second movable sleeve, the traction sleeve sleeved on the outer side of the upper end of the stretching tube, the outer wall of the traction sleeve symmetrically fixed with a second connecting rod, one end of the second connecting rod fixedly connected to a second movable sleeve, the second movable sleeve movably sleeved on the outer side of the guide rod, a heating assembly sleeved on the outer side of the middle of the stretching tube, the heating assembly comprising a heating sleeve, a first connecting rod, and a first movable sleeve, the heating sleeve sleeved on the outer side of the stretching tube, the outer wall of the heating sleeve symmetrically fixed with a first connecting rod, one end of the first connecting rod fixedly connected to a first movable sleeve, the first movable sleeve movably sleeved on the outer side of the guide rod.

[0006] As a preferred technical solution of the embryo laboratory tube-pulling device of this utility model, the side wall of the positioning sleeve is provided with a first threaded hole, and the inner side of the first threaded hole is threaded with a first screw, one end of the first screw being located on the lower end side of the pulling tube.

[0007] As a preferred technical solution of the embryo laboratory tube pulling device of this utility model, the side wall of the pulling sleeve is provided with a second threaded hole, and a second screw is threadedly connected to the inner side of the second threaded hole. One end of the second screw is located on the upper side of the pulling tube.

[0008] As a preferred embodiment of the embryo laboratory tube-pulling device of this utility model, a heating wire is fixed to the inner wall of the heating sleeve, a connecting sleeve is fixed to the end of the heating sleeve, and a power cord is electrically connected to the connecting sleeve.

[0009] As a preferred embodiment of the tube-pulling device for an embryo laboratory according to this utility model, a friction strip is fixed to the inner wall of the first movable sleeve, and the friction strip is made of elastic material.

[0010] As a preferred technical solution of the embryo laboratory tube pulling device of this utility model, a calibration frame is provided on one side of the pulling tube. The calibration frame includes a U-shaped plate and a third movable sleeve. Scale lines are fixed on the side wall of the U-shaped plate. The two ends of the U-shaped plate are fixedly connected to the third movable sleeve, which is movably sleeved on the outside of the guide rod.

[0011] As a preferred embodiment of the tube-pulling device for an embryo laboratory according to this utility model, the third movable sleeve and the first movable sleeve have the same structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In use, this utility model, through the guide rod, positioning sleeve, heating component, and pulling component, allows the operator to insert the lower end of the stretching tube into the inner side of the positioning sleeve and tighten it by turning the first screw. Then, the heating sleeve of the heating component is fitted onto the outer side of the stretching tube, and the first movable sleeve of the heating component is fitted onto the outer side of the guide rod. Next, the pulling sleeve of the pulling component is fitted onto the top outer side of the stretching tube, and the second screw is tightened to secure it. The second movable sleeve of the pulling component is fitted onto the outer side of the guide rod. The operator then powers on the heating sleeve to heat the stretching tube. Once heated to a stretchable state, the operator pulls the pulling sleeve to stretch the tube. During stretching, the second movable sleeve moves on the guide rod, causing the pulling sleeve to stretch the tube vertically. This avoids the tube bending due to gravity during conventional horizontal stretching and also prevents hand tremors from negatively impacting the stretching process. This allows the operator to focus more intently on controlling the stretching speed, facilitating precise control of the tube diameter after stretching, and improving the overall convenience and stability of the operation.

[0014] Furthermore, by attaching a calibration frame to the guide rod, with the U-shaped plate of the calibration frame located on one side of the stretching tube and scale values ​​on the side wall of the U-shaped plate, the operator can observe the change in the diameter of the stretching tube at all times during the stretching process. This allows for timely stopping of the stretching operation when the appropriate diameter is reached, improving the accuracy of the stretching operation and making it highly practical. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a three-dimensional sectional view of the present invention;

[0019] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 For the present utility model Figure 2 Enlarged view of point B in the middle;

[0021] Figure 5 This is a three-dimensional sectional view of the heating component of this utility model;

[0022] Figure 6 This is a three-dimensional sectional view of the traction component of this utility model;

[0023] Figure 7 This is a partial sectional view of the calibration frame of this utility model.

[0024] In the diagram: 1. Base plate; 2. Guide rod; 3. Positioning sleeve; 31. First threaded hole; 32. First screw; 4. Heating assembly; 41. Heating sleeve; 411. Heating wire; 412. Connecting sleeve; 42. Power cord; 43. First connecting rod; 44. First moving sleeve; 441. Friction strip; 5. Pulling assembly; 51. Pulling sleeve; 511. Second threaded hole; 512. Second screw; 52. Second connecting rod; 53. Second moving sleeve; 6. Calibration frame; 61. U-shaped plate; 611. Scale line; 62. Third moving sleeve; 7. Stretching tube. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1

[0027] Please see Figure 1-7 This utility model provides the following technical solution: a tube-pulling device for an embryo laboratory, comprising a base plate 1, a positioning sleeve 3 fixed in the middle of the top surface of the base plate 1, guide rods 2 symmetrically arranged on both sides of the positioning sleeve 3, the lower end of the guide rods 2 fixed to the top surface of the base plate 1, the length of the guide rods 2 can be set according to actual needs, a stretching tube 7 (i.e., the glass tube to be stretched) is inserted into the inner side of the positioning sleeve 3, a first threaded hole 31 is provided on the side wall of the positioning sleeve 3, a first screw 32 is threadedly connected to the inner side of the first threaded hole 31, one end of the first screw 32 is located on the lower end side of the stretching tube 7, tightening the first screw 32 can press the lower end of the stretching tube 7 tightly, and at the same time, in order to avoid the stretching tube 7 being squeezed and damaged, the end of the first screw 32 can be made of a flexible material to increase friction, and a pulling component 5 is sleeved on the outer side of the top of the stretching tube 7, as detailed in the appendix. Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 and attached Figure 6 The traction assembly 5 includes a traction sleeve 51, a second connecting rod 52, and a second movable sleeve 53. The traction sleeve 51 is sleeved on the outer side of the upper end of the tension tube 7. A second threaded hole 511 is provided on the side wall of the traction sleeve 51. A second screw 512 is threadedly connected to the inner side of the second threaded hole 511. One end of the second screw 512 is located on one side of the upper end of the tension tube 7, which can tighten and fix the upper end of the tension tube 7. The second connecting rod 52 is symmetrically fixed on the outer wall of the traction sleeve 51. One end of the second connecting rod 52 is fixedly connected to the second movable sleeve 53. The movable sleeve is attached to the outside of the guide rod 2 and can move flexibly on the guide rod 2. When stretching the stretching tube 7, this solution adopts vertical stretching instead of conventional horizontal stretching. By connecting the movable sleeve and the guide rod 2, the stretching sleeve 51 can drive the stretching tube 7 to stretch in the vertical direction. This avoids bending of the stretching tube 7 due to gravity and prevents the pipe from twisting due to operator hand shaking. This allows the operator to focus on controlling the stretching rate and accurately control the pipe diameter after stretching. The operation is convenient, stable, and highly practical.

[0028] Reference Figure 1 , Figure 2 and Figure 5As shown, specifically, a heating assembly 4 is sleeved on the outer side of the middle part of the stretching tube 7. The heating assembly 4 includes a heating sleeve 41, a first connecting rod 43, and a first movable sleeve 44. The heating sleeve 41 is sleeved on the outer side of the stretching tube 7. A heating wire 411 is fixed to the inner wall of the heating sleeve 41. A connecting sleeve 412 is fixed to the end of the heating sleeve 41. A circuit is provided on the inner side of the connecting sleeve 412 to connect the heating wire 411 and the power line 42, so that the heating wire 411 can be started for heating by an external power source. Its specific connection structure and principle are relatively common existing technologies, so they are not discussed here. Without going into too much detail, the connecting sleeve 412 is electrically connected to a power cord 42, and the outer wall of the heating sleeve 41 is symmetrically fixed with a first connecting rod 43. One end of the first connecting rod 43 is fixedly connected to a first movable sleeve 44, which is movably sleeved on the outside of the guide rod 2. The inner wall of the first movable sleeve 44 is fixed with a friction strip 441, which is made of elastic material. The friction strip 441 improves the stability of the heating component 4 during installation and allows the operator to adjust the height of the heating sleeve 41, making it easier to heat different positions of the stretching tube 7 and further improving the convenience of operation.

[0029] Example 2

[0030] Reference Figure 1 , Figure 2 and Figure 7 As shown, specifically, a calibration frame 6 is provided on one side of the stretching tube 7. The calibration frame 6 includes a U-shaped plate 61 and a third movable sleeve 62. A scale line 611 is fixed on the side wall of the U-shaped plate 61, and numerical markings are set on it. The two ends of the U-shaped plate 61 are fixedly connected to the third movable sleeve 62. The third movable sleeve 62 is movably sleeved on the outside of the guide rod 2, so that the U-shaped plate 61 remains horizontal. The third movable sleeve 62 has the same structure as the first movable sleeve 44, which also facilitates the adjustment of the height of the calibration frame 6. With the calibration frame 6 set in this scheme, the operator can intuitively and accurately observe the change in the diameter of the stretching tube 7 by observing the scale line 611 when stretching the stretching tube 7, which is convenient for precise control of the diameter of the stretching tube 7 and has strong practicality.

[0031] The working principle and usage process of this utility model are as follows: When performing the pulling operation on the Pasteur tube used in the embryo laboratory, the lower end of the pulling tube 7 can be inserted into the inner side of the positioning sleeve 3, and the first screw 32 is tightened to fix the lower end. Then, the heating sleeve 41 is sleeved on the outer side of the middle part of the pulling tube 7. At this time, the first movable sleeves 44 on both sides of the heating sleeve 41 are sleeved on the guide rod 2 to position the heating sleeve 41. Then, the operator sleeves the third movable sleeve 62 of the calibration frame 6 on the guide rod 2, so that the scale line 611 on the calibration frame 6 is located on one side of the pulling tube 7 for easy calibration. Then the operation... The operator attaches the pulling sleeve 51 of the pulling assembly 5 to the outer side of the upper end of the stretching tube 7 and tightens the second screw 512 to fix it. At this time, the second moving sleeves 53 on both sides of the pulling sleeve 51 are attached to the guide rod 2. Then the operator turns on the external power supply to make the heating sleeve 41 heat the stretching tube 7. When the tube pulling operation can be performed, the operator pulls the pulling sleeve 51 to drive the stretching tube 7 to stretch in the vertical direction. At the same time, the operator can observe the scale line 611 at all times until the diameter of the stretching tube 7 reaches the requirement. The overall tool structure is simple and easy to operate, and it can improve the stability and accuracy of the tube pulling operation.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pipetting device for use in an embryology laboratory, comprising a base plate (1), characterized in that: A positioning sleeve (3) is fixed in the middle of the top surface of the base plate (1). Guide rods (2) are symmetrically arranged on both sides of the positioning sleeve (3). The lower end of the guide rod (2) is fixed to the top surface of the base plate (1). A tension tube (7) is inserted into the inner side of the positioning sleeve (3). A traction assembly (5) is sleeved on the outer side of the top of the tension tube (7). The traction assembly (5) includes a traction sleeve (51), a second connecting rod (52), and a second moving sleeve (53). The traction sleeve (51) is sleeved on the outer side of the upper end of the tension tube (7). The outer wall of the traction sleeve (51) is symmetrically fixed with a second connecting rod (52). One end of the guide rod (2) is fixedly connected to a second movable sleeve (53), which is movably sleeved on the outside of the guide rod (2). A heating component (4) is sleeved on the outer side of the middle part of the tension tube (7). The heating component (4) includes a heating sleeve (41), a first connecting rod (43), and a first movable sleeve (44). The heating sleeve (41) is sleeved on the outside of the tension tube (7). The outer wall of the heating sleeve (41) is symmetrically fixed with the first connecting rod (43). One end of the first connecting rod (43) is fixedly connected to the first movable sleeve (44), which is movably sleeved on the outside of the guide rod (2).

2. A pipetting device for use in embryo laboratories according to claim 1, characterized in that: The positioning sleeve (3) has a first threaded hole (31) on its side wall. The inner side of the first threaded hole (31) is threaded with a first screw (32). One end of the first screw (32) is located on the lower end side of the stretching tube (7).

3. A pipetting device for use in embryo laboratories according to claim 2, characterized in that: The side wall of the pulling sleeve (51) is provided with a second threaded hole (511), and the inner side of the second threaded hole (511) is threaded with a second screw (512), one end of the second screw (512) is located on the upper side of the pulling tube (7).

4. A pipetting device for use in embryo laboratories according to claim 3, characterized in that: The heating sleeve (41) has a heating wire (411) fixed on its inner wall, and a connecting sleeve (412) fixed at its end. A power cord (42) is electrically connected to the connecting sleeve (412).

5. The tube-pulling device for an embryo laboratory according to claim 4, characterized in that: The inner wall of the first movable sleeve (44) is fixed with a friction strip (441), which is made of elastic material.

6. A pipetting device for use in embryo laboratories according to claim 5, characterized in that: A calibration frame (6) is provided on one side of the stretching tube (7). The calibration frame (6) includes a U-shaped plate (61) and a third movable sleeve (62). A scale line (611) is fixed on the side wall of the U-shaped plate (61). The two ends of the U-shaped plate (61) are fixedly connected to the third movable sleeve (62). The third movable sleeve (62) is movably sleeved on the outside of the guide rod (2).

7. A pipetting device for use in embryo laboratories according to claim 6, characterized in that: The third movable sleeve (62) and the first movable sleeve (44) have the same structure.

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