Connecting pipe cutting device

Abstract

The utility model relates to the technical field of medical apparatuses and instruments, in particular to a connecting pipe cutting device which comprises a mounting arm, a cutting device and a cutting device. And the butt-joint clamping block is mounted on the mounting arm, a guide groove is formed in the clamping block, and the butt-joint clamping block is made of a ceramic material. The device has the effects that friction between the cutting wire and the butt joint clamping block is reduced, and the phenomena of wire running and wire breaking of the cutting wire are reduced.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a pipe cutting device. Background Technology

[0002] A sterile connection device is a medical device that connects two tubes in a contaminated environment while maintaining sterility. It is widely used in blood collection and supply, clinical surgery, and biopharmaceuticals. With the development of biomedical technology, the demand for sterile connection devices is constantly increasing, especially in areas such as stem cell applications and liquid nitrogen cryogenic storage.

[0003] The connector cutting device is a key component of the aseptic connector machine. When connecting blood bag tubing, the connector cutting device first cuts the blood bag tubing, and then the two cut sections of blood bag tubing are heated and connected to achieve the connector operation. Typically, the connector cutting device includes an mounting arm, docking blocks, an isolation block, and cutting wires. The mounting arm is U-shaped, and there are two docking blocks, both fixed to the mounting wall. The isolation block is positioned between the docking blocks and the mounting arm. Bolts pass through the docking blocks and the isolation block, screwing them onto the mounting wall to secure the isolation block and docking blocks.

[0004] The docking blocks are usually made of iron, and during use, the cutting wire is prone to running or breaking. Utility Model Content

[0005] The purpose of this application is to provide a pipe cutting device that can reduce the friction between the cutting wire and the docking block, thereby reducing the occurrence of wire slippage and breakage.

[0006] The pipe cutting device provided in this application adopts the following technical solution:

[0007] A pipe cutting device, comprising:

[0008] Mounting arm;

[0009] A docking block is installed on the mounting arm. The docking block has a guide groove and is made of ceramic material.

[0010] Optionally, the ceramic material is zirconia ceramic.

[0011] Optionally, it also includes a T-shaped connecting block, which is fixed on the docking block;

[0012] The mounting arm includes a housing and a cover plate. The housing and the cover plate are detachably connected. The housing has a slot that is adapted to the T-shaped connecting block, and the T-shaped connecting block can be inserted into the slot.

[0013] Optionally, the mounting arm is provided with an arc surface, which is located at the opening of the guide groove along the axial direction.

[0014] Optionally, a guide block is fixedly connected to the docking block, and an inclined surface is provided on the guide block. The inclined surface is inclined toward the direction of the guide groove, and the guide groove is opened on the side near the inclined surface.

[0015] Optionally, bolts are also included, through which the cover plate and the housing are detachably connected.

[0016] Compared to the iron material used in the prior art, the zirconia ceramic material used in this application makes the docking block more durable. Firstly, zirconia ceramic itself is electrically insulating, maintaining this property even when the cutting wire is heated, eliminating the need for an insulating alumina block under the docking block, thus simplifying the number of parts and optimizing the overall structure. Secondly, zirconia ceramic has high hardness, high bending strength, and high wear resistance, significantly improving the service life of the docking block. Thirdly, the smooth surface of zirconia ceramic results in a low coefficient of friction when the cutting wire slides relative to the docking block, greatly improving the problem of wire breakage during wire winding and unwinding. Fourthly, zirconia ceramic has high temperature resistance, maintaining structural stability at high temperatures and exhibiting low thermal conductivity, reducing the likelihood of heat generated by the cutting wire being dissipated from the docking block and affecting other equipment.

[0017] Furthermore, because this application sets up a T-shaped connecting block and a slot to cooperate in order to install the docking block, it is not necessary to make through holes in the docking block for installing bolts. Therefore, there is no interference between the through holes and the arc surface, which would affect the curvature of the arc surface. As a result, the cutting wire is more likely to slip out of the guide groove during use. In this embodiment, since the through holes in the docking block are eliminated, the arc surface can be designed to be larger, making the bending of the cutting wire smoother and further reducing the occurrence of the cutting wire slipping out of the guide groove. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a pipe cutting device according to an embodiment of this application.

[0019] Figure 2 This is a schematic diagram of the structure of a pipe cutting device after the cover plate is hidden, according to an embodiment.

[0020] In the diagram, 1 is the mounting arm; 11 is the outer casing; 111 is the slot; 12 is the cover plate; 2 is the mating block; 21 is the guide groove; 22 is the arc surface; 3 is the guide block; 31 is the inclined surface; 4 is the cutting wire; and 5 is the T-shaped connecting block. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 -Appendix Figure 2 This application will be described in further detail below.

[0022] A pipe cutting device, as shown in the reference Figure 1 and Figure 2 The system includes an mounting arm 1 and docking blocks. The mounting arm 1 is recessed in the middle and U-shaped. Two docking blocks 2 are installed in the recessed part of the mounting arm 1, one at each end. Each docking block 2 has a guide groove 21 with the axes of the two guide grooves 21 coinciding. The guide grooves 21 are used to hold the cutting wire 4. Specifically, the two ends of the cutting wire 4 pass through the two guide grooves 21 and are mounted on a take-up roller. The take-up roller is used to take up the cutting wire 4, forming a cutting section between the two docking blocks 2. When it is necessary to cut and connect the blood bag tubing, the cutting wire 4 is energized to heat it up, and an external drive structure moves the mounting wall closer to the blood bag tubing, causing the cutting section to cut the tubing. After cutting, the blood bag tubing can be heated and connected. During the movement of the mounting wall, the take-up roller continuously unwinds. Upon reset, the take-up roller rewinds, and the mounting arm 1 resets.

[0023] Specifically, the docking block 2 is made of ceramic material. In this embodiment, the ceramic material is specifically zirconia ceramic. Compared with the iron material used in the prior art, the use of ceramic material in the docking block 2 has several advantages: First, zirconia ceramic material itself has electrical insulation properties and maintains insulation at high temperatures, eliminating the need for an insulating alumina isolation block under the docking block 2, thus simplifying the number of parts and optimizing the overall structure. Second, zirconia ceramic has high hardness, high bending strength, and high wear resistance, greatly improving the service life of the docking block 2. Third, the smooth surface of zirconia ceramic results in a low coefficient of friction when the cutting wire 4 slides relative to the docking block 2, greatly improving the problem of wire breakage during wire winding and unwinding. Fourth, zirconia ceramic has high temperature resistance, maintaining structural stability at high temperatures and exhibiting low thermal conductivity, reducing the possibility of heat generated by the cutting wire being dissipated from the docking block and affecting other equipment.

[0024] Furthermore, the mounting arm 1 includes a housing 11 and a cover plate 12, which are detachably connected. In this embodiment, bolts are also provided, and the housing 11 and the cover plate 12 are detachably connected by bolts. In other embodiments, the housing 11 and the cover plate 12 can be detachably connected by a snap-fit ​​method.

[0025] Furthermore, the outer casing 11 has slots 111 on its two protruding ends, and a T-shaped connecting block 5 is fixedly connected to the mating block 2. The T-shaped connecting block 5 is adapted to the shape of the slot 111 and can be inserted into the slot 111. Specifically, when installing the mating block 2, the outer casing 11 is first separated from the cover plate 12. At this time, the T-shaped connecting block 5 is inserted into the slot 111, and then the cover plate 12 is fixed to the outer casing 11, thereby achieving the fixed installation of the mating block 2.

[0026] Furthermore, an arc surface 22 is provided on the docking block 2. The arc surface 22 is located at the opening of the guide groove 21 along the axial direction. By providing the arc surface 22, the stress concentration of the cutting wire 4 at the bending point is reduced, and the occurrence of wire breakage is reduced. In addition, since the docking block 2 is installed by using a T-shaped connecting block 5 to cooperate with the slot 111 in this embodiment, there is no need to make a through hole in the docking block 2 for installing bolts. Therefore, there is no interference between the through hole and the arc surface 22, which would affect the curvature of the arc surface 22. Thus, the cutting wire 4 can easily slide out of the guide groove 21 during use. In this embodiment, since the through hole is eliminated in the docking block 2, the arc surface 22 can be designed to be larger, making the bending of the cutting wire 4 smoother, further reducing the occurrence of the cutting wire 4 sliding out of the guide groove 21.

[0027] Furthermore, the opening on one side of the guide groove 21 makes the cross-section of the guide groove 21 C-shaped, allowing the cutting wire 4 to slide into the guide groove 21 from the side opening. When installing the cutting wire 4, it can slide into two guide grooves 21 at the same time, making installation more convenient.

[0028] Furthermore, a guide block 3 is fixedly connected to the docking block 2. The guide block 3 is provided with an inclined surface 31. The inclined surface 31 is inclined towards the guide groove 21. When installing the cutting wire 4, the cutting wire 4 can slide into the guide groove 21 under the guidance of the inclined surface 31, which further facilitates the installation of the cutting wire 4.

[0029] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pipe cutting device, characterized in that, include: Mounting arm (1); A docking block (2) is installed on the mounting arm (1). The docking block (2) has a guide groove (21) and is made of ceramic material.

2. The pipe cutting device according to claim 1, characterized in that, The ceramic material is zirconia ceramic.

3. The pipe cutting device according to claim 1, characterized in that, It also includes a T-shaped connecting block (5), which is fixed on the docking block (2); The mounting arm (1) includes a housing (11) and a cover plate (12). The housing (11) and the cover plate (12) are detachably connected. The housing (11) has a slot (111) adapted to the T-shaped connecting block (5). The T-shaped connecting block (5) can be inserted into the slot (111).

4. A pipe cutting device according to claim 3, characterized in that, The mounting arm (1) is provided with an arc surface (22), which is located at the opening of the guide groove (21) along the axial direction.

5. A pipe cutting device according to claim 1, characterized in that, A guide block (3) is fixedly connected to the docking block (2). An inclined surface (31) is provided on the guide block (3). The inclined surface (31) is inclined toward the guide groove (21). The guide groove (21) is opened on the side close to the inclined surface (31).

6. A pipe cutting device according to claim 3, characterized in that, It also includes bolts, through which the cover plate (12) and the outer shell (11) are detachably connected.

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