Tooth chair capable of switching sterile treatment water

Abstract

The utility model relates to the technical field of medical instruments, in particular to a dental chair capable of switching sterile treatment water, which is characterized in that a first liquid storage part is arranged on a box body; the second liquid storage part is mounted on the tool rack, and sterile liquid is contained in the first liquid storage part and the second liquid storage part; the liquid supply pipeline comprises a first liquid path communicated with the first liquid storage part, a second liquid path communicated with an external water source and a third liquid path communicated with the second liquid storage part; the downstream of the second liquid path is provided with a first branch and a second branch, the first branch is connected to the tool rack, the downstream of the second branch is provided with a mouthwash branch and a spittoon water branch, and the first liquid path is communicated with the mouthwash branch; and the control valve group is arranged on the liquid supply pipeline. According to the utility model, the switching of sterile liquid or conventional water sources supplied and conveyed by the liquid supply pipeline can be realized by controlling the opening and closing of the valve group, and the requirements of conventional treatment and sterile treatment on patients are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially is related to a dental chair of switchable sterile treatment water. BACKGROUND

[0002] Dental chair is often used in dental treatment, and according to the different treatment scenes during dental treatment, the water source used is also different, for example, when filling teeth, ordinary free water or pure water can be used, but the use of the water for the treatment with trauma requires higher, such as the water used when implanting a nail body needs to be sterile, and physiological saline is usually used. The existing sterile water supply needs a special set of equipment to be placed on the tool rack of the dental chair, which is inconvenient to use and occupies a large space. Moreover, the mouthwash used by the patient at present is also made of conventional water, so the effect of sterile treatment cannot be achieved. SUMMARY

[0003] Therefore, the purpose of the present application is to provide a dental chair capable of switching between sterile treatment water, to solve the problem that the existing sterile water supply equipment on the dental chair needs to be additionally equipped, is inconvenient to use, occupies a large space, and cannot provide sterile mouthwash for patients, and cannot achieve sterile treatment.

[0004] The utility model discloses a dental chair capable of switching between sterile treatment water, comprising a box body and a tool rack, and further comprising:

[0005] A first liquid storage member is installed on the box body.

[0006] A second liquid storage member is installed on the tool rack, and the first liquid storage member and the second liquid storage member each contain sterile liquid.

[0007] A liquid supply pipeline comprises a first liquid path connected to the first liquid storage member, a second liquid path connected to an external water source, and a third liquid path connected to the second liquid storage member. The downstream of the second liquid path is provided with a first branch and a second branch. The first branch is connected to the tool rack. The downstream of the second branch is provided with a mouthwash branch and a spittoon water branch. The output end of the first liquid path is connected to the mouthwash branch.

[0008] A control valve group is arranged on the liquid supply pipeline.

[0009] Preferably, the control valve group comprises:

[0010] A first control valve is arranged on the first liquid path.

[0011] A second control valve is arranged on the first branch.

[0012] A third control valve is arranged on the mouthwash branch and upstream of the position where the first liquid path and the mouthwash branch are communicated;

[0013] A fourth control valve is arranged on the spittoon water branch.

[0014] Preferably, the utility model further comprises:

[0015] A gas supply pipeline is communicated with the first liquid storage member, and the gas supply pipeline can deliver gas to the inside of the first liquid storage member to squeeze the sterile liquid in the first liquid storage member into the first liquid path.

[0016] Preferably, the utility model further comprises:

[0017] A on-off member is arranged on the gas supply pipeline.

[0018] Preferably, the utility model further comprises:

[0019] A power pump is communicated with the third liquid path, and an operating instrument is mounted on the tool holder, and the output end of the third liquid path is communicated with the operating instrument.

[0020] Preferably, the power pump comprises a mounting portion and a head portion protruding from the mounting portion, and the third liquid path is arranged in the head portion.

[0021] A mounting hole is formed in the tool holder, the mounting portion is arranged in the mounting hole, and the head portion is arranged outside the tool holder.

[0022] Preferably, a protruding supporting portion is arranged in the tool holder, and a clamping groove is formed in the supporting portion and clamps at least part of the side wall of the mounting portion.

[0023] Preferably, the utility model further comprises:

[0024] A connecting member is arranged in the tool holder and connected with the power pump.

[0025] Preferably, the hole wall of the mounting hole is in conformity with the circumferential side wall of the mounting portion.

[0026] Preferably, the utility model further comprises:

[0027] A fixing member is mounted on the tool holder, and the second liquid storage member is mounted on the fixing member.

[0028] Preferably, the third liquid path is a disposable pipeline.

[0029] Compared with the prior art, the utility model has the beneficial effects that:

[0030] The dental chair capable of switching sterile treatment water of the utility model, including first liquid storage spare and installing on the tool rest second liquid storage spare of box body, the inside of first liquid storage spare and second liquid storage spare are filled with sterile liquid, liquid supply pipeline includes with first liquid storage spare intercommunication first liquid path, with external water source intercommunication second liquid path and with second liquid storage spare intercommunication third liquid path, the downstream of second liquid path is provided with first branch and second branch, first branch is connected to tool rest, the downstream of second branch is provided with mouthwash branch and spittoon water branch, the output end of first liquid path is communicated with mouthwash branch, control valve group is arranged on liquid supply pipeline, so through the switch of control valve group realizes the switching of liquid supply pipeline to delivery sterile liquid or conventional water source, makes conventional water source and sterile liquid can be delivered to tool rest and is used for patient mouthwash, satisfies the demand of conventional treatment and sterile treatment to patient.

[0031] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor according to these drawings.

[0033] Figure 1 The schematic diagram of liquid supply pipeline in the dental chair capable of switching sterile treatment water provided for the embodiment of the utility model is shown;

[0034] Figure 2 The structural schematic diagram of second liquid storage spare and third liquid path installed on tool rest in the dental chair capable of switching sterile treatment water provided for the embodiment of the utility model is shown;

[0035] Figure 3 The assembly structure schematic diagram of power pump and tool rest in the dental chair capable of switching sterile treatment water provided for the embodiment of the utility model is shown;

[0036] Figure 4 The explosion structure schematic diagram of power pump and tool rest in the dental chair capable of switching sterile treatment water provided for the embodiment of the utility model is shown.

[0037] Icon: 1 - box; 2 - tool rack; 201 - operating instrument; 202 - positioning hole; 203 - mounting hole; 204 - support part; 205 - clamping groove; 3 - dental chair main body; 4 - mouthwash outlet; 5 - spittoon flushing port; 10 - first liquid storage member; 20 - second liquid storage member; 31 - first liquid path; 32 - second liquid path; 321 - first branch; 322 - second branch; 3221 - mouthwash branch; 3222 - spittoon water branch; 33 - third liquid path; 41 - first control valve; 42 - second control valve; 43 - third control valve; 44 - fourth control valve; 50 - air supply pipeline; 51 - on-off member; 60 - power pump; 61 - mounting part; 62 - head part; 70 - connecting member; 80 - fixing member. DETAILED DESCRIPTION

[0038] The following detailed description is presented to aid the reader in gaining a comprehensive understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents can be used, and the

[0039] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, these examples have been provided so that this disclosure will be thorough and complete, and will fully convey the scope of the methods, apparatuses, and / or systems to those skilled in the art. Further, the description should not be interpreted as implying that any particular element, feature, structure, or characteristic is essential.

[0040] Throughout the specification, when an element (such as a layer, region, or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, "on top of" another element, or "covering" another element, it can be directly on, connected to, coupled to, adjacent to, on top of, or covering the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to," "directly adjacent to," "directly on top of," or "directly covering" another element, there are no other elements interposed therebetween.

[0041] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.

[0042] Although terms such as "first" and "second" and "third" can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, terms of a first element, component, region, layer or section described herein could also be termed a second element, component, region, layer or section without departing from the teachings of the examples.

[0043] For ease of description, spatial relationship terms such as "on", "upper", "under", and "lower" can be used herein to describe the relationship between one element and another element as shown in the drawings. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over, an element described as being "on" or "upper" relative to another element would then be oriented "under" or "lower" relative to the other element. Accordingly, the term "on" encompasses both an "on" and "under" orientation depending on the spatial orientation of the device. The device can be oriented in other ways (e.g., rotated 90 degrees or at other orientations) and an appropriate modification to the spatial relationship terms would be made to those of skill in the art.

[0044] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has", "having" and "contains", "containing" as used herein, are meant to be open-ended terms that do not exclude other components, but mean that the listed components are included.

[0045] Variations in shapes that are shown in the drawings can occur as a result of manufacturing processes and / or tolerances. Thus, the examples described herein are not limited to the precise shapes shown in the drawings, but include variations in shapes that occur as a result of manufacturing processes.

[0046] Features of the examples described herein can be combined with one another as would be apparent to one of ordinary skill in the art after having the benefit of the present disclosure. Furthermore, although examples are described herein with various configurations, other configurations are possible as would be apparent to one of ordinary skill in the art after having the benefit of the present disclosure.

[0047] According to the first aspect of the present application, a dental chair capable of switching sterile treatment water is provided, which comprises a first liquid storage member 10, a second liquid storage member 20, a liquid supply pipeline and a control valve group.

[0048] Hereinafter, the specific structure of the above-mentioned components of the dental chair capable of switching sterile treatment water according to the present embodiment will be described.

[0049] In the present embodiment, as shown in Figure 1 , the dental chair comprises a cabinet 1, a tool rack 2 and a dental chair body 3 for a patient to lie down, the tool rack 2 and the cabinet 1 are arranged at the side of the dental chair body 3, and the tool rack 2 contains operating instruments 201 such as dental handpieces required by the doctor for treatment. In the present embodiment, the cabinet 1 and / or the dental chair body 3 is provided with a mouthwash outlet 4 capable of providing mouthwash for the patient and a spittoon flushing outlet 5 capable of flushing the spittoon.

[0050] In the present embodiment, as shown in Figure 1 and Figure 2 , the first liquid storage 10 is installed on the cabinet 1, and the second liquid storage 20 is installed on the tool rack 2, and the interiors of the first liquid storage 10 and the second liquid storage 20 are filled with sterile liquid, which is configured according to the requirements of sterile treatment, and the sterile liquid can be disinfectant water, sterile water or bacteriostatic water, etc. as long as it meets the requirements of sterile treatment; in the present embodiment, the first liquid storage 10 and the second liquid storage 20 can be bottle-shaped, tank-shaped, bag-shaped or box-shaped containers as long as they have the ability to contain sterile liquid.

[0051] Further, in the present embodiment, as shown in Figure 1 , the liquid supply pipeline comprises a first liquid path 31 communicating with the first liquid storage 10, a second liquid path 32 communicating with an external water source and a third liquid path 33 communicating with the second liquid storage 20, the first liquid path 31 is used to transport the sterile liquid in the first liquid storage 10, the third liquid path 33 is used to transport the sterile liquid in the second liquid storage 20, and the external water source (conventional water) can be free water or pure water.

[0052] Specifically, the downstream of the second liquid path 32 is provided with a first branch 321 and a second branch 322, so that the downstream of the second liquid path 32 forms two branches, wherein the first branch 321 is connected to the tool rack 2, so as to realize the supply of the external water source to the tool rack 2, and the downstream of the second branch 322 is provided with a mouthwash branch 3221 and a spittoon water branch 3222, the output end of the mouthwash branch 3221 leads to the mouthwash outlet 4, and the output end of the spittoon water branch 3222 leads to the spittoon flushing outlet 5, so as to realize the supply of the external water source to the mouthwash outlet 4 and the spittoon flushing outlet 5.

[0053] More specifically, the output end of the first liquid path 31 communicates with the mouthwash branch 3221, so that the first liquid path 31 can deliver the sterile liquid in the first liquid storage 10 into the mouthwash branch 3221 via the first liquid path 31, thereby realizing that the sterile liquid can flow out of the mouthwash outlet 4, meeting the needs of the patient to use the sterile liquid for mouth washing, thereby achieving the effect of sterile treatment.

[0054] In the present embodiment, the control valve group is arranged on the liquid supply pipeline, so that the switching of the liquid supply pipeline to the sterile liquid source or the conventional water source is realized by the switching of the control valve group, so that the conventional water source and the sterile liquid can be delivered to the tool holder 2 and used for the patient to wash the mouth, meeting the needs of the patient for conventional treatment and sterile treatment.

[0055] Specifically, in the present embodiment, as shown in Figure 1 the control valve group includes a first control valve 41, a second control valve 42, a third control valve 43 and a fourth control valve 44, which are preferably solenoid valves, convenient and flexible to operate; the first control valve 41 is arranged on the first liquid path 31 and is used to control the on-off of the first liquid path 31, when the first control valve 41 is opened, the sterile liquid in the first liquid storage 10 can flow into the mouthwash branch 3221 via the first liquid path 31, when the first control valve 41 is closed, the communication between the first liquid storage 10 and the mouthwash branch 3221 is cut off; the second control valve 42 is arranged on the first branch 321 and is used to control whether the conventional water source can lead to the tool holder 2; the third control valve 43 is arranged on the mouthwash branch 3221 and is used to control whether the conventional water source can flow out of the mouthwash outlet 4, the third control valve 43 is located upstream of the communication between the first liquid path 31 and the mouthwash branch 3221, so as to ensure that when the third control valve 43 is in the closed state, the conventional water will not flow into the first liquid path 31; the fourth control valve 44 is arranged on the spittoon water branch 3222 and is used to control whether the conventional water can flow out of the spittoon water outlet 5.

[0056] Further, in the present embodiment, as shown in Figure 1 the dental chair capable of switching sterile treatment water further includes a gas supply pipeline 50, which communicates with the first liquid storage 10, the gas supply pipeline 50 can communicate with a gas storage tank containing compressed gas, the gas supply pipeline 50 can deliver gas to the inside of the first liquid storage 10 to extrude the sterile liquid in the first liquid storage 10 into the first liquid path 31, the output end of the gas supply pipeline 50 is located above the liquid level of the sterile liquid, the input end of the first liquid path 31 extends below the liquid level of the sterile liquid, the input end of the first liquid path 31 preferably extends to the bottom of the first liquid storage 10, when the gas enters the first liquid storage 10, it can extrude the liquid of the sterile liquid, so that the sterile liquid enters the input end of the first liquid path 31, thereby realizing the delivery of the first liquid path 31.

[0057] Further, as shown in Figure 1 the chair for switching sterile therapeutic water further comprises a shutoff 51 arranged on the supply pipeline 50, which can be a stop valve or an electromagnetic valve same as the control valve, so that the shutoff 51 can be closed to stop the supply of the extrusion pressure of the sterile liquid into the first liquid storage 10 when the mouthwash outlet 4 does not need to flow out the sterile liquid, thereby ensuring the safety of the liquid supply pipeline.

[0058] In the embodiment, the chair for switching sterile therapeutic water comprises two working modes, one is a normal working mode (i.e. supplying normal water to the mouthwash branch 3221, the spittoon flushing outlet 5 or the tool holder 2) and the other is a sterile working mode (i.e. supplying sterile liquid to the mouthwash branch 3221 or the tool holder 2); when the mouthwash branch 3221 needs to flow out the sterile liquid, the shutoff 51 and the first control valve 41 are opened and the third control valve 43 is closed; when the mouthwash branch 3221 needs to flow out the normal water, the shutoff 51 and the first control valve 41 are closed and the third control valve 43 is opened; when the mouthwash branch 3221 does not need to flow out the sterile liquid and the normal water, the shutoff 51, the first control valve 41 and the third control valve 43 are all closed; when the spittoon flushing outlet 5 needs to flow out the normal water, the fourth control valve 44 is opened; when the spittoon flushing outlet 5 does not need to flow out the normal water, the fourth control valve 44 is closed; when the tool holder 2 needs to supply the sterile liquid to the components, the second control valve 42 is closed and the third liquid pipeline 33 supplies the sterile liquid in the second liquid storage 20; when the tool holder 2 needs to supply the normal water to the components, the second control valve 42 is opened.

[0059] In the embodiment, as shown in Figures 1 to 4 the chair for switching sterile therapeutic water further comprises a power pump 60 communicated with the third liquid pipeline 33, which can be a peristaltic pump to provide the power for the second liquid storage 20 to flow into the third liquid pipeline 33; the tool holder 2 is provided with an operating instrument 201, which can be an instrument driven by a power motor, and the output end of the third liquid pipeline 33 is communicated with the operating instrument 201, thereby providing the sterile liquid for the operating instrument 201. It should be noted that when the second control valve 42 is opened, the power pump 60 is in a closed state.

[0060] Further, in the embodiment, as shown in Figure 3 and Figure 4As shown, the power pump 60 comprises a mounting portion 61 and a head portion 62 protruding from the mounting portion 61, that is, the circumferential side wall of the head portion 62 is larger in size than the circumferential side wall of the mounting portion 61, in this embodiment, the mounting portion 61 is the outer wall of the housing of the motor in the power pump 60, and the third liquid path 33 is arranged through the head portion 62; the tool holder 2 is provided with a mounting hole 203, and the mounting portion 61 is arranged through the mounting hole 203, so that the power pump 60 is mounted on the tool holder 2, and the head portion 62 is arranged outside the tool holder 2, so that the connection of the third liquid path 33 and the power pump 60 is facilitated, and the installation position of the power pump 60 does not occupy the tool holder 2, and the layout of the third liquid path 33 is more reasonable.

[0061] Further, in this embodiment, as shown in Figure 3 and Figure 4 , the inside of the tool holder 2 is provided with a protruding support portion 204, which can be a vertically arranged plate structure or a block structure, and the support portion 204 is provided with a clamping groove 205 that covers at least part of the side wall of the mounting portion 61, so as to support and fix the power pump 60, and ensure that the power pump 60 is firmly and reliably mounted on the tool holder 2. Preferably, the support portion 204 is formed as a reinforcing rib structure inside the tool holder 2, so as to further improve the structural strength of the tool holder.

[0062] In a preferred embodiment, as shown in Figure 4 , the hole wall of the mounting hole 203 is shaped and fitted with the circumferential side wall of the mounting portion 61, so as to ensure reliable installation of the power pump 60 and the tool holder 2. Preferably, the mounting hole 203 is not a circular hole, so as to limit the circumferential position of the power pump 60.

[0063] Preferably, as shown in Figure 3 and Figure 4 , the dental chair with switchable sterile treatment water further comprises a connecting piece 70, which can be a screw, and the tool holder 2 is provided with a positioning hole 202, which is a through hole structure, and the connecting piece 70 is connected with the power pump 60 by passing through the positioning hole 202, so as to lock and fix the power pump 60 and the tool holder 2, and ensure that the power pump 60 is more stable.

[0064] In addition, in this embodiment, as shown in Figures 1 to 4 , the dental chair with switchable sterile treatment water further comprises a fixing piece 80 mounted on the tool holder 2, which can be formed as a rod-shaped structure and mounted on the side of the tool holder 2, and the second liquid storage 20 is mounted on the fixing piece 80, and the second liquid storage 20 is detachably connected with the fixing piece 80, so that the second liquid storage 20 can be replaced after the sterile liquid in it is used up. Alternatively, the fixing piece 80 is formed with a curved hook, and the second liquid storage 20 can be hung on the hook.

[0065] In the preferred embodiment, the third liquid path 33 is a disposable tube, so that the third liquid path 33 is replaced simultaneously when the second liquid storage member 20 is replaced, thereby ensuring the reliability of the sterile liquid.

[0066] The dental chair with switchable sterile treatment water according to the present application is simple in structure and convenient to operate, and comprises a first liquid storage member mounted on a box body and a second liquid storage member mounted on a tool rack, the first liquid storage member and the second liquid storage member each contain sterile liquid; a liquid supply pipeline comprises a first liquid path in communication with the first liquid storage member, a second liquid path in communication with an external water source, and a third liquid path in communication with the second liquid storage member; a first branch and a second branch are arranged downstream of the second liquid path, the first branch is connected to the tool rack, a mouthwash branch and a spittoon water branch are arranged downstream of the second branch, and an output end of the first liquid path is in communication with the mouthwash branch; a control valve group is arranged on the liquid supply pipeline, so that the liquid supply pipeline is switched to deliver sterile liquid or conventional water source by switching of the control valve group, and the conventional water source and the sterile liquid can both be delivered to the tool rack and used for the patient to rinse the mouth, thereby meeting the needs of conventional treatment and sterile treatment of the patient.

[0067] Finally, it should be noted that: the above-described embodiments are merely specific implementations of the present application, which are used to illustrate the technical solutions of the present application, but not to limit them, the protection scope of the present application is not limited to this, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art in the technical range disclosed by the present application, they can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and all should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A dental chair with switchable sterile treatment water, comprising a housing and a tool rack, characterized in that, Also includes: The first liquid storage component is installed on the housing; A second liquid storage device is installed on the tool rack. Both the first and second liquid storage devices contain sterile liquid. The liquid supply pipeline includes a first liquid path connected to the first liquid storage device, a second liquid path connected to an external water source, and a third liquid path connected to the second liquid storage device; a first branch and a second branch are provided downstream of the second liquid path, the first branch is connected to the tool rack, and a mouthwash branch and a spittoon water branch are provided downstream of the second branch, and the output end of the first liquid path is connected to the mouthwash branch. The control valve assembly is installed on the liquid supply line.

2. The dental chair with switchable sterile treatment water according to claim 1, characterized in that, The control valve assembly includes: A first control valve is installed in the first liquid path; The second control valve is installed on the first branch; The third control valve is installed on the mouthwash branch and is located upstream of the connection between the first liquid path and the mouthwash branch; The fourth control valve is located on the sputum cup water branch.

3. The dental chair with switchable sterile treatment water according to claim 1, characterized in that, Also includes: A gas supply line is connected to the first liquid storage device, and the gas supply line can deliver gas into the interior of the first liquid storage device to squeeze the sterile liquid in the first liquid storage device into the first liquid path.

4. The dental chair with switchable sterile treatment water according to claim 3, characterized in that, Also includes: A switch is installed on the gas supply pipeline.

5. The dental chair with switchable sterile treatment water according to claim 1, characterized in that, Also includes: A power pump is connected to the third fluid circuit; an operating instrument is installed on the tool rack, and the output end of the third fluid circuit leads to the operating instrument.

6. The dental chair with switchable sterile treatment water according to claim 5, characterized in that, The power pump includes a mounting part and a head protruding from the mounting part, and the third liquid passage passes through the head; The tool holder has mounting holes, the mounting part passes through the mounting holes, and the head is located on the outside of the tool holder.

7. The dental chair with switchable sterile treatment water according to claim 6, characterized in that, The tool holder has a protruding support portion inside, and the support portion has a snap-fit ​​groove that covers at least part of the side wall of the mounting portion.

8. The dental chair with switchable sterile treatment water according to claim 6, characterized in that, Also includes: The tool holder has a positioning hole, and the connector passes through the positioning hole to connect with the power pump. And / or, the wall of the mounting hole conforms to the circumferential sidewall of the mounting part.

9. The dental chair with switchable sterile treatment water according to claim 1, characterized in that, Also includes: A fixing element is installed on the tool rack, and the second liquid storage element is installed on the fixing element.

10. The dental chair with switchable sterile treatment water according to claim 1, characterized in that, The third liquid path is a disposable pipeline.

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