Anti-static elastic piece and hemodialysis machine using same

Abstract

The utility model discloses an anti-static shrapnel and a hemodialysis machine using the same, the shrapnel is composed of at least one shrapnel body, the shrapnel body is provided with a U-shaped part, the U-shaped part comprises a first side plate, a second side plate and a bottom plate, and the second side plate is connected with a first arc-shaped plate; a metal frame is arranged in the hemodialysis machine, a metal shell is arranged on the outer side of the hemodialysis machine, the anti-static elastic piece is arranged on the metal frame, and the first arc-shaped plate is in conductive contact with the metal shell. The beneficial effects of the utility model are that reliable connection between the installation part and the part to be grounded can be realized through the elastic sheet body, so that the part to be grounded can be grounded safely and reliably, and harm caused by static electricity can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment, and in particular to an antistatic spring and a hemodialysis machine using the spring. Background Technology

[0002] Hemodialysis machines are primarily used for artificial dialysis treatment of patients with renal insufficiency. They remove toxins and excess fluid from the body through blood circulation, while maintaining electrolyte balance. For medical equipment such as hemodialysis machines, the national standard mandates electromagnetic compatibility (EMC) testing and certification. Among these, the electrostatic discharge (ESD) test is the most difficult to pass and the most challenging to rectify during the immunity test. Current hemodialysis equipment typically employs measures such as adding protection circuits for sensitive components at the board level and grounding the PCB. For the overall machine, conductive foam is applied to gaps, or conductive paint is sprayed inside the plastic casing.

[0003] Operating a hemodialysis machine is relatively complex; its common structure can be found in the instruction manual. Figure 4 As shown, the machine includes a touchscreen 21, a blood circuit panel 22, a water circuit section 23, and a base 24. Medical personnel need to operate the touchscreen 21, arrange plastic tubing consumables on the blood circuit panel 22, and insert and remove tubing from the water circuit section 23. These operations require medical personnel to come into contact with all the machine's components. The human body is most prone to generating static electricity, which can cause electrostatic discharge during operation, potentially leading to malfunctions.

[0004] Patent publication number "CN213565442U" discloses a "spring-loaded antistatic structure and an automotive instrument panel with a spring-loaded antistatic structure". However, in this patent solution, the spring-loaded structure is mainly formed by folding a sheet metal into multiple flat surfaces, which has the problem of insufficient elasticity and may not be able to achieve reliable grounding.

[0005] Therefore, our company proposes an anti-static spring and a hemodialysis machine using the spring. Summary of the Invention

[0006] The purpose of this invention is to provide an antistatic spring and a hemodialysis machine using the spring, which can effectively shield and dissipate static electricity.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An antistatic spring includes a spring body with a U-shaped portion. The U-shaped portion includes a first side plate, a second side plate, and a bottom plate. The second side plate is connected to a first arc-shaped plate.

[0009] Preferably, the first side plate is provided with a clamping plate that is inclined inward toward the U-shaped portion.

[0010] Preferably, the second side plate is connected to the first arc-shaped plate via a straight plate.

[0011] Preferably, a second arc-shaped plate is provided at the end of the first arc-shaped plate.

[0012] Preferably, the spring is composed of at least one spring body connected in series.

[0013] Preferably, this application also provides a hemodialysis machine, which has an internal metal frame and an external metal shell. The aforementioned antistatic spring is provided on the metal frame, and the first arc-shaped plate is in conductive contact with the metal shell.

[0014] Preferably, the bottom of the hemodialysis machine is equipped with anti-static casters, and the entire surface of the touch screen of the hemodialysis machine is covered with an anti-static material.

[0015] Preferably, the hemodialysis machine is provided with a metal interface terminal bracket, the terminals of the hemodialysis machine are set on the metal interface terminal bracket, the lower part of the metal interface terminal bracket is connected to the metal frame through a support bracket, and the upper part and side wall of the metal interface terminal bracket are connected to the metal frame through contact parts.

[0016] The metal interface terminal bracket and terminal, the metal interface terminal bracket and support bracket, the metal interface terminal bracket and metal frame, and the support bracket and metal frame are all in conductive contact.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. The spring clip body enables a reliable connection between the mounting part and the part to be grounded, thereby ensuring that the part to be grounded is safely and reliably grounded and avoiding damage caused by static electricity.

[0019] 2. The straight plate design allows the spring clip to be reliably engaged with the mounting parts, preventing them from accidentally falling off.

[0020] 3. The hemodialysis machine has good anti-static function by using anti-static springs, anti-static casters, metal interface terminal brackets, etc., which can conduct static electricity to "ground" or dissipate it as soon as possible, so as to protect the sensitive components on the internal PCB and make the whole machine operate stably.

[0021] 4. The first arc-shaped plate and clamping plate enable the spring to reliably connect the metal shell and the metal frame, thus forming a channel between the metal shell, the anti-static spring, and the metal frame. External static electricity will be conducted to the internal "ground", i.e., the metal frame, through this channel. When the operator touches the metal shell, the static electricity on the person's body will be conducted to the "ground" through the above channel, thereby protecting the internal PCB board.

[0022] 5. During use, the compression amount of the spring will vary depending on the distance between the connected mounting part and the part to be grounded. When the compression amount is large, the end of the first arc plate may press against the second side plate or mounting part of the spring. The second arc plate provides a guiding function to the end of the first arc plate, allowing it to move upward after compression, thus enabling further compression. If the end of the first arc plate is made into a straight edge, it may scratch the second side plate or mounting part, or even prevent further compression of the spring. Attached Figure Description

[0023] Figure 1 A 3D view of the antistatic spring;

[0024] Figure 2 This is the front view of the antistatic spring.

[0025] Figure 3 Left view of the antistatic spring;

[0026] Figure 4 An overall view of the hemodialysis machine;

[0027] Figure 5 This is a schematic diagram of the internal structure of a hemodialysis machine;

[0028] Figure 6 A 3D view of the metal interface terminal bracket;

[0029] Figure 7 Main view of the installation of anti-static spring clips in a hemodialysis machine.

[0030] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0031] The present invention will now be further described with reference to the accompanying drawings.

[0032] Example 1

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, the antistatic spring proposed in this embodiment includes a spring body 1. The spring body 1 has a U-shaped part, which can be smoothly snapped onto the mounting part. The U-shaped part includes a first side plate 11, a second side plate 13 and a bottom plate 17. The second side plate 13 is connected to a first arc plate 15. The first arc plate 15 has a certain elasticity and can be reliably connected to the part to be grounded, so that it can be grounded through the spring body 1.

[0034] The first side plate 11 is provided with a clamping plate 12 that is inclined inward towards the U-shaped part, which makes the connection between the spring body 1 and the mounting part more reliable.

[0035] The second side plate 13 is connected to the first arc plate 15 through the straight plate 14. When the top of the arc surface of the first arc plate 15 is subjected to pressure, there is a downward component force on the straight plate 14. The downward component force will cause the spring body 1 to be locked onto the mounting part and will not fall off.

[0036] A second arc plate 16 is provided at the end of the first arc plate 15.

[0037] During use, the number of spring bodies can be flexibly set according to the specific dimensions of the installation parts and the parts to be grounded. Multiple spring bodies can be connected in series to improve the reliability of grounding.

[0038] During the manufacturing of this spring, sheet metal can be used as raw material. The second side plate 13, the base plate 17, the straight plate 14, the first arc-shaped plate 15, and the second arc-shaped plate 16 can be folded out through stamping, folding, etc. Then, a clamping plate 12 is folded out on the first side plate 11. After that, slots are made between adjacent spring bodies 1, which can facilitate their separation.

[0039] Example 2

[0040] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, this embodiment provides a hemodialysis machine. The hemodialysis machine 2 has an internal metal frame 25 and an external metal outer shell 26. An anti-static spring sheet, as described in Embodiment 1, is disposed on the metal frame 25. The first arc-shaped plate 15 makes conductive contact with the metal outer shell 26. This forms a channel between the metal outer shell 26, the anti-static spring sheet, and the metal frame 25. External static electricity is conducted through this channel to the internal "ground," i.e., the metal frame. When an operator touches the metal outer shell, the static electricity on the operator's body is conducted to the "ground" through the aforementioned channel, thereby protecting the internal PCB board. The direction of static electricity conduction is... Figure 7 The arrow in the image indicates the direction.

[0041] To better reduce static electricity, anti-static casters are installed at the bottom of the hemodialysis machine. These casters prevent static electricity generated by friction during machine movement, prevent static electricity buildup, and release static electricity.

[0042] Hemodialysis machines are typically used in hospital hemodialysis centers. Surfaces in the treatment area for dialysis patients are frequently contaminated with blood. If these contaminated surfaces are not adequately cleaned and disinfected, bloodborne pathogens and other pathogens may survive for several days and remain infectious. Due to the proximity of treatment spaces in hemodialysis centers, medical staff need to switch between different patient treatment areas for maintenance. For ease of operation, the screen of the hemodialysis machine 2 is typically a touchscreen 21. If not cleaned promptly, there is a risk of cross-infection. In this embodiment, the entire surface of the touchscreen 21 of the hemodialysis machine 2 is covered with an anti-static material. This prevents static electricity buildup and quickly dissipates static electricity caused by surface friction, thereby protecting internal components and ensuring stable display.

[0043] Meanwhile, to prevent static electricity from being generated by friction on moving parts, or by opening and closing doors, grounding designs are incorporated into the internal moving parts of the hemodialysis machine (i.e., internal shielding ground; the shielding ground is to prevent electromagnetic interference in the electrical connection between the shielding body and the metal shell; for example, the PCB shielding cover is connected to the grounding wire of the internal metal frame, the vein clamp motor control board is connected to the grounding wire of the metal frame, and the support bracket 33 of the metal interface terminal bracket is connected to the metal frame. These connections can quickly transfer static electricity from the human body to the internal metal frame, protecting the corresponding PCB board). This ensures rapid dissipation of static electricity and guarantees the safety of the internal circuitry.

[0044] The hemodialysis machine is equipped with a metal interface terminal bracket 3. The terminals of the hemodialysis machine are set on the terminal interface 31 of the metal interface terminal bracket 3. The lower part of the metal interface terminal bracket 3 is connected to the metal frame through the support bracket 33, and the upper part and side wall of the metal interface terminal bracket 3 are connected to the metal frame through the contact part 32.

[0045] The terminals are secured to the metal interface terminal bracket 3 with screws, ensuring a tight connection between the terminals and the bracket 3 and guaranteeing good conductive contact. The contact portion 32 of the metal interface terminal bracket 3 is uncoated to ensure good conductive contact between the bracket and the internal metal frame. The upper part of the support bracket 33 is connected to the metal interface terminal bracket 3 with screws; the mating surfaces are uncoated, ensuring good conductive contact. The bottom of the support bracket 33 is also uncoated and connected to the metal frame with screws, ensuring good conductive contact.

[0046] Because the metal interface terminal bracket 3 and the internal metal frame are designed to have good conductive contact, when inserting or removing the terminal, the static electricity on the hand touching the surface of the metal interface terminal bracket will be quickly conducted through the metal interface terminal bracket 3 to the metal frame, which can be considered as ground. This prevents static electricity from being transmitted to the internal PCB board through the terminal, thus avoiding damage to the PCB board and protecting it.

[0047] The above embodiments are not intended to limit the shape, material, structure, etc. of this utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

[0048] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0049] If the terms "first" or "second" are used in this document to define the components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing this utility model and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An antistatic spring, comprising a spring body, characterized in that, The shrapnel body has a U-shaped portion, which includes a first side plate, a second side plate, and a bottom plate. The second side plate is connected to a first arc-shaped plate.

2. The antistatic spring according to claim 1, characterized in that, The first side plate is provided with a clamping plate that is inclined inward towards the U-shaped part.

3. The antistatic spring sheet according to claim 1, characterized in that, The second side plate is connected to the first arc-shaped plate via a straight plate.

4. The antistatic spring according to claim 1, characterized in that, A second arc-shaped plate is provided at the end of the first arc-shaped plate.

5. The antistatic spring according to claim 1, characterized in that, The spring is composed of at least one spring body connected in series.

6. A hemodialysis machine, comprising an internal metal frame and an external metal shell, characterized in that, The metal frame is provided with an antistatic spring sheet as described in any one of claims 1-5, and the first arc-shaped plate is in conductive contact with the metal shell.

7. A hemodialysis machine according to claim 6, characterized in that, The bottom of the hemodialysis machine is equipped with anti-static casters, and the entire surface of the touch screen of the hemodialysis machine is covered with an anti-static material.

8. A hemodialysis machine according to claim 6, characterized in that, The hemodialysis machine is equipped with a metal interface terminal bracket. The terminals of the hemodialysis machine are set on the metal interface terminal bracket. The lower part of the metal interface terminal bracket is connected to the metal frame through a support bracket. The upper part and side wall of the metal interface terminal bracket are connected to the metal frame through contact parts. The metal interface terminal bracket and terminal, the metal interface terminal bracket and support bracket, the metal interface terminal bracket and metal frame, and the support bracket and metal frame are all in conductive contact.

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