Water-gas mixing spray head of laser oral cavity therapeutic instrument

Abstract

The utility model provides a laser oral cavity therapeutic instrument water-gas mixing nozzle, which comprises a water-gas nozzle body, a tip fixing insert and a laser emitting tip, the laser emitting tip is sleeved on the tip fixing insert, the tip fixing insert is sleeved on the water-gas nozzle body, and the laser emitting tip is sleeved on the water-gas nozzle body. A water conveying pipeline, a gas conveying pipeline and a water-gas outlet hole are arranged in the side wall of the water-gas spray head body, and the water conveying pipeline and the gas conveying pipeline are respectively communicated with the water-gas outlet hole; an optical fiber is embedded in the laser emitting tip, and the orientation of the water vapor emitting hole is consistent with the orientation of the laser emitting tip. After the laser emitting tip is fixedly arranged on the water vapor nozzle body through the tip fixing plug-in, a high-energy laser beam can be output through the optical fiber, meanwhile, water fed by the water conveying pipeline and gas fed by the gas conveying pipeline can form water vapor spray before water vapor exits the jet hole, and cooling and cleaning are conducted through the water vapor spray in the operation process. The oral cavity of a patient is not burdened, and a good cooling and cleaning effect can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment technology, and specifically to a water-air mixing nozzle, particularly a structure that sprays a water-air mixture during the operation of a laser therapy device to facilitate cooling and cleaning. Background Technology

[0002] A laser oral treatment device is an instrument that uses a high-energy laser beam to treat oral tissues. After the laser is generated inside the device, it is transmitted through the light transmission component to the light output tip, and then emitted from the tip to the tissues inside the patient's mouth. The high-energy laser beam is used to irradiate the oral tissues and can be used for cleaning and sterilization, cutting soft and hard tissues, removing bone tissue, etc. It can reduce inflammation and promote the regeneration and repair of oral tissues.

[0003] During dental procedures performed with a laser dental treatment device, whether cleaning, disinfecting, or cutting, the high-energy laser beam causes a rapid increase in the temperature of the irradiated tissue within a short period. This can hinder laser transmission, affect the laser irradiation effect, and impede the smooth implementation of the dental treatment. For example, when using a laser dental treatment device to grind alveolar bone, some alveolar bone debris will form around the area being ground, covering the target area. When it reaches a certain thickness, it will affect the grinding effect of the high-energy laser beam.

[0004] In existing technologies, the effects are generally eliminated by directly and continuously impacting the treatment area with a fine stream of water. However, considering that the patient's oral cavity is quite sensitive, the impact force of the water stream is relatively small, which will greatly reduce the cooling and cleaning effect. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a water-air mixing nozzle for a laser oral treatment device, which uses water and air to form a water-air spray. During operation, the water-air spray is used for cooling and cleaning, without causing burden on the patient's oral cavity, and can achieve a better cooling and cleaning effect.

[0006] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0007] A water-air mixing nozzle for a laser oral treatment device, comprising:

[0008] The water-air nozzle body is a cylindrical structure and is fitted inside the outer shell of the therapeutic instrument. A first mounting sleeve is provided inside the water-air nozzle body. The first mounting sleeve is located in the center of the water-air nozzle body and is arranged along the axial direction. A water supply pipe, an air supply pipe and a water-air ejection hole are provided in the side wall of the water-air nozzle body. The water supply pipe and the air supply pipe are respectively connected to the water-air ejection hole.

[0009] A tip fixing plug has a cylindrical structure and is fixedly disposed inside a first mounting sleeve. A second mounting sleeve is disposed inside the tip fixing plug, and the second mounting sleeve is located in the center of the tip fixing plug and is disposed along the axial direction.

[0010] A laser emission tip is fixedly disposed inside the second mounting sleeve. An optical fiber is embedded in the laser emission tip, with both ends of the optical fiber exposed at both ends of the laser emission tip. The optical fiber is distributed along the length direction of the laser emission tip, and the orientation of the water vapor emission hole is consistent with the orientation of the laser emission tip.

[0011] Compared with existing technologies, the beneficial effects of this technical solution are as follows: After the laser emission tip is fixedly set on the water-air nozzle body through the tip fixing plug, a high-energy laser beam can be output through the optical fiber. At the same time, the water delivered by the water supply pipe and the air delivered by the air supply pipe will form a water-air spray in front of the water-air emission hole. During the operation, the water-air spray is used for cooling and cleaning, which will not cause burden on the patient's oral cavity, and can achieve a better cooling and cleaning effect.

[0012] Furthermore, the outer side of the water-air nozzle body protrudes outward to form a first body gasket fixing part, a second body gasket fixing part, and a third body gasket fixing part. The first body gasket fixing part, the second body gasket fixing part, and the third body gasket fixing part are formed on the outer side of the water-air nozzle body along the circumference of the water-air nozzle body, and the first body gasket fixing part, the second body gasket fixing part, and the third body gasket fixing part are equidistantly distributed along the axial direction of the water-air nozzle body.

[0013] A nozzle sealing ring is fixedly provided on the first body gasket fixing part, the second body gasket fixing part and the third body gasket fixing part respectively;

[0014] When the water-air nozzle body is fitted inside the outer shell of the therapeutic instrument, the water-air nozzle body abuts against the inner shell of the therapeutic instrument through the first body gasket fixing part, the second body gasket fixing part, and the nozzle sealing ring on the third nozzle gasket.

[0015] The beneficial effects of adopting the above solution are: by having the nozzle sealing rings on the first body gasket fixing part, the second body gasket fixing part, and the third body gasket fixing part abut against the inside of the treatment device housing, the sealing between the water and air nozzle body and the treatment device housing can be effectively ensured, preventing water and air leakage from affecting electronic components.

[0016] Furthermore, a liquid channel and a gas channel are formed between the water-air nozzle body and the outer shell of the therapeutic instrument. The outer side of the water-air nozzle body is provided with a water inlet and an air inlet. The liquid channel is connected to the water inlet end of the water supply pipe through the water inlet, and the gas channel is connected to the air inlet end of the air supply pipe through the air inlet. The water outlet end of the water supply pipe and the air outlet end of the air supply pipe converge at the water-air ejection hole.

[0017] The beneficial effects of adopting the above solution are: by utilizing the cooperation between the water-air nozzle body and the outer shell of the therapeutic instrument to form a liquid channel and a gas channel, and by opening water inlet and air inlet in the water-air nozzle body, the technical objective of water and gas entering the water-air nozzle body through the outer shell of the therapeutic instrument is achieved, eliminating the need for traditional transmission components, and making the structure of this water-air mixing nozzle more compact.

[0018] Furthermore, the water jet nozzle body abuts against the inside of the therapeutic device housing through the nozzle sealing rings on the first body gasket fixing part and the second body gasket fixing part to form the liquid channel;

[0019] The water-air nozzle body abuts against the outer shell of the therapeutic instrument through the nozzle sealing ring on the second body gasket fixing part and the third body gasket fixing part to form the gas channel.

[0020] The beneficial effects of adopting the above solution are: by combining the cooperation between the water-air nozzle body and the outer shell of the therapeutic instrument, the nozzle sealing rings on the first and second body gasket fixing parts form a liquid channel, and the nozzle sealing rings on the second and third body gasket fixing parts form a gas channel. The liquid channel and the gas channel are cleverly separated by the first, second, and third body gasket fixing parts, which were originally used for sealing and isolation, thus further simplifying the structure of this water-air mixing nozzle.

[0021] Furthermore, three of each of the following are provided: water inlet, air inlet, water supply pipe, air supply pipe, and water / air outlet.

[0022] The water inlet and the air inlet are equidistantly arranged on the outer side of the water-air nozzle body, and the water-air outlet is equidistantly arranged on the lower end face of the water-air nozzle body.

[0023] The beneficial effects of adopting the above solution are: it can ensure more uniform air intake, water intake, and water-air mixing, thus guaranteeing the cooling and cleaning effect.

[0024] Furthermore, the outer side of the tip fixing plug protrudes outward to form a plurality of sleeve washer fixing parts, the sleeve washer fixing parts are formed on the outer side of the tip fixing plug along the circumference of the tip fixing plug, and the plurality of sleeve washer fixing parts are equidistantly distributed along the axial direction of the tip fixing plug.

[0025] A sleeve sealing ring is provided on the sleeve washer fixing part;

[0026] When the tip fixing insert is fitted into the water-air nozzle body, the tip fixing insert abuts against the water-air nozzle body through the sleeve sealing rings on the multiple sleeve gasket fixing parts.

[0027] The beneficial effects of adopting the above solution are: by having the sleeve sealing ring on the sleeve gasket fixing part abut against the water and air nozzle body, the sealing between the tip fixing plug and the water and air nozzle body can be effectively ensured, preventing water and air leakage from affecting electronic components.

[0028] Furthermore, the outer side of the tip fixing plug protrudes outward to form a first clamping ring and a second clamping ring, the first clamping ring and the second clamping ring being spaced apart;

[0029] When the tip fixing plug is fixedly installed inside the first mounting sleeve, the first clamping ring and the second clamping ring are exposed outside the first mounting sleeve.

[0030] The beneficial effect of adopting the above scheme is that the first and second clamping rings, which are set at intervals, provide force points, making it easier to remove the tip fixing plug from the water and air nozzle body.

[0031] Furthermore, a limiting ring is provided on the water-air nozzle body, and the limiting ring is located at the upper end of the first mounting sleeve;

[0032] When the tip fixing plug is fixedly installed inside the first mounting sleeve, the upper end of the tip fixing plug abuts against the limiting ring.

[0033] The beneficial effect of adopting the above solution is that by setting a limit ring on the water-air nozzle body, the tip fixing plug is prevented from sliding out of the first mounting sleeve.

[0034] Furthermore, the water jet nozzle body, the tip fixing plug, and the laser emission tip are integrally formed metal structures.

[0035] The advantages of adopting the above scheme are: using an integrally formed metal structure as the water and air nozzle body, tip fixing plug and laser emission tip, the structure has the advantages of convenient manufacturing and long service life. Attached Figure Description

[0036] Figure 1 This is an overall schematic diagram of the water-air mixing nozzle of the laser oral treatment device of this utility model.

[0037] Figure 2 This is an exploded view of the water-air mixing nozzle of the laser oral treatment device of this utility model.

[0038] Figure 3 This is a cross-sectional schematic diagram of the water-air mixing nozzle body in the laser oral treatment instrument of this utility model.

[0039] Figure 4 This is a schematic diagram of the tip fixing plug in the water-air mixing nozzle of the laser oral treatment instrument of this utility model.

[0040] Figure 5 This is a schematic diagram of the limiting ring in the water-air mixing nozzle of the laser oral treatment instrument of this utility model.

[0041] The components represented by each number in the diagram are listed below:

[0042] 1. Water / air nozzle body; 2. Tip fixing insert; 3. Laser emission tip;

[0043] First mounting sleeve 101, water supply pipe 102, air supply pipe 103, water and air jet hole 104, first body gasket fixing part 105, second body gasket fixing part 106, third body gasket fixing part 107, nozzle sealing ring 108, water inlet hole 109, air inlet hole 110, limit ring 111.

[0044] Second mounting sleeve 201, sleeve washer fixing part 202, first clamping ring 203, second clamping ring 204. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0046] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," and "right," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. When a component is referred to as being "fixed to" or "set on" another element, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening component. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0048] A laser oral treatment device is an instrument that uses a high-energy laser beam to treat oral tissues. After the laser is generated inside the device, it is transmitted through the light transmission component to the light output tip, and then emitted from the tip to the tissues inside the patient's mouth. The high-energy laser beam is used to irradiate the oral tissues and can be used for cleaning and sterilization, cutting soft and hard tissues, removing bone tissue, etc. It can reduce inflammation and promote the regeneration and repair of oral tissues.

[0049] During dental procedures performed with a laser dental treatment device, whether cleaning, disinfecting, or cutting, the high-energy laser beam causes a rapid increase in the temperature of the irradiated tissue within a short period. This can hinder laser transmission, affect the laser irradiation effect, and impede the smooth implementation of the dental treatment. For example, when using a laser dental treatment device to grind alveolar bone, some alveolar bone debris will form around the area being ground, covering the target area. When it reaches a certain thickness, it will affect the grinding effect of the high-energy laser beam.

[0050] In existing technologies, the effects are generally eliminated by directly and continuously impacting the treatment area with a fine stream of water. However, considering that the patient's oral cavity is quite sensitive, the impact force of the water stream is relatively small, which will greatly reduce the cooling and cleaning effect.

[0051] like Figure 1 and Figure 2 As shown, in order to solve the above problems, this utility model provides a water-air mixing nozzle for a laser oral treatment device, including a water-air nozzle body 1, a tip fixing plug 2, and a laser emission tip 3. An optical fiber is provided inside the laser emission tip 3, and the laser emission tip 3 is disposed inside the tip fixing plug 2, which is disposed inside the water-air nozzle body 1.

[0052] The water-air nozzle body 1 has a cylindrical structure and is fitted inside the outer shell of the therapeutic device. Based on this cylindrical structure, a first mounting sleeve 101 is provided inside the water-air nozzle body 1. The first mounting sleeve 101 is located at the center of the water-air nozzle body 1 and is axially arranged. A water supply pipe 102, an air supply pipe 103, and a water-air ejection hole 104 are provided inside the side wall of the water-air nozzle body 1. The water supply pipe 102 and the air supply pipe 103 are respectively connected to the water-air ejection hole 104. Externally input water is transported forward through the water supply pipe 102 inside the side wall of the water-air nozzle body 1, and externally input air is transported forward through the air supply pipe 103 inside the side wall of the water-air nozzle body 1. Finally, they converge in front of the water-air ejection hole 104 to form a water-air spray, which is then ejected from the water-air ejection hole 104.

[0053] The tip fixing plug 2 has a cylindrical structure and is fixedly disposed within the first mounting sleeve 101. Based on the cylindrical structure, a second mounting sleeve 201 is disposed within the tip fixing plug 2, the second mounting sleeve 201 being located at the center of the tip fixing plug 2 and arranged axially.

[0054] The laser emission tip 3 is fixedly disposed within the second mounting sleeve 201. An optical fiber is embedded within the laser emission tip 3, with both ends of the optical fiber exposed at both ends of the laser emission tip 3. The optical fiber is distributed along the length of the laser emission tip 3, and the orientation of the water vapor emission port 104 is consistent with the orientation of the laser emission tip 3. After the laser enters the optical fiber from one end, it is transmitted to the other end. Since both ends of the optical fiber are exposed at both ends of the laser emission tip 3, the high-energy laser beam will ultimately exit from the laser emission tip 3, allowing the operator to perform various treatments on the patient's oral cavity. During this process, the water vapor spray emitted from the water vapor emission port 104 can cool and clean the patient's oral cavity.

[0055] Based on the above structure, after the laser emission tip 3 is fixedly set on the water and air nozzle body 1 through the tip fixing plug 2, a high-energy laser beam can be output through the optical fiber. At the same time, the water delivered by the water supply pipe 102 and the air delivered by the air supply pipe 103 will form a water and air spray in front of the water and air emission hole 104. During the operation, the water and air spray is used for cooling and cleaning, which will not cause burden on the patient's oral cavity, and can achieve a good cooling and cleaning effect.

[0056] like Figure 3As shown, preferably, the outer side of the water / air nozzle body 1 has a first body gasket fixing part 105, a second body gasket fixing part 106, and a third body gasket fixing part 107 protruding outward. The first body gasket fixing part 105, the second body gasket fixing part 106, and the third body gasket fixing part 107 are formed on the outer side of the water / air nozzle body 1 along the circumference of the water / air nozzle body 1. That is, the first body gasket fixing part 105, the second body gasket fixing part 106, and the third body gasket fixing part 107 are formed on the outer side of the water / air nozzle body 1. The fixing part 107 forms a ring-like structure on the outer surface of the water-air nozzle body 1. The first body gasket fixing part 105, the second body gasket fixing part 106, and the third body gasket fixing part 107 are equidistantly distributed along the axial direction of the water-air nozzle body 1. That is, along the length direction of the water-air nozzle body 1, the distance between the first body gasket fixing part 105 and the second body gasket fixing part 106 is equal to the distance between the second body gasket fixing part 106 and the third body gasket fixing part 107. A nozzle sealing ring 108 is fixedly provided on the first body gasket fixing part 105, the second body gasket fixing part 106, and the third body gasket fixing part 107, thereby improving the sealing performance of the device.

[0057] One of the functions of the first body gasket fixing part 105, the second body gasket fixing part 106, and the third body gasket fixing part 107 is to fix the nozzle sealing ring 108. When the water-air nozzle body 1 is fitted inside the treatment device housing, the water-air nozzle body 1 abuts against the treatment device housing through the first body gasket fixing part 105, the second body gasket fixing part 106, and the nozzle sealing ring 108 on the third nozzle gasket.

[0058] Based on the above structure, the nozzle sealing rings 108 on the first body gasket fixing part 105, the second body gasket fixing part 106, and the third body gasket fixing part 107 abut against the inside of the therapeutic instrument housing, effectively ensuring the sealing between the water / air nozzle body 1 and the therapeutic instrument housing, preventing water / air leakage from affecting electronic components. By providing three body gasket fixing parts, the three nozzle sealing rings 108 significantly improve the sealing effect.

[0059] Preferably, a liquid channel and a gas channel are formed between the water-air nozzle body 1 and the outer shell of the therapeutic instrument. Both the liquid channel and the gas channel are connected to the outside. The outer side of the water-air nozzle body 1 is provided with a water inlet 109 and an air inlet 110. The liquid channel is connected to the water inlet end of the water supply pipe 102 through the water inlet 109. The gas channel is connected to the air inlet end of the air supply pipe 103 through the air inlet 110. The water outlet end of the water supply pipe 102 and the air outlet end of the air supply pipe 103 converge at the water-air ejection hole 104.

[0060] By utilizing the cooperation between the water-air nozzle body 1 and the outer shell of the therapeutic instrument to form a liquid channel and a gas channel, and making both the liquid channel and the gas channel connected to the outside, and then opening a water inlet 109 and an air inlet 110 in the water-air nozzle body 1, the technical purpose of realizing the input of water and gas into the water-air nozzle body 1 through the outer shell of the therapeutic instrument is achieved, eliminating the need for traditional transmission components, such as rubber tubes, and making the structure of this water-air mixing nozzle more compact.

[0061] like Figure 3 As shown, the water-air nozzle body 1 abuts against the inside of the therapeutic device housing through the nozzle sealing rings 108 on the first body gasket fixing part 105 and the second body gasket fixing part 106 to form the liquid channel; the water-air nozzle body 1 abuts against the inside of the therapeutic device housing through the nozzle sealing rings 108 on the second body gasket fixing part 106 and the third body gasket fixing part 107 to form the gas channel.

[0062] The first body gasket fixing part 105, the second body gasket fixing part 106, and the third body gasket fixing part 107 are structures that protrude from the outer side of the water-air nozzle body 1. When the water-air nozzle body 1 is fitted onto the outer shell of the therapeutic instrument, the nozzle sealing rings 108 on the first body gasket fixing part 105, the second body gasket fixing part 106, and the third body gasket fixing part 107 abut against the inside of the therapeutic instrument outer shell. Accordingly, a sealed channel is formed between the water-air nozzle body 1, the first body gasket fixing part 105, the second body gasket fixing part 106, and the therapeutic instrument outer shell, and this sealed channel serves as a liquid channel; a sealed channel is also formed between the water-air nozzle body 1, the second body gasket fixing part 106, the third body gasket fixing part 107, and the therapeutic instrument outer shell, and this sealed channel serves as a gas channel.

[0063] Based on the above structure, and considering the fit between the water-air nozzle body 1 and the outer shell of the therapeutic instrument, a liquid channel is formed by the nozzle sealing rings 108 on the first body gasket fixing part 105 and the second body gasket fixing part 106, and a gas channel is formed by the nozzle sealing rings 108 on the second body gasket fixing part 106 and the third body gasket fixing part 107. The liquid channel and the gas channel are cleverly separated by the first body gasket fixing part 105, the second body gasket fixing part 106, and the third body gasket fixing part 107, which were originally used for sealing and isolation, thus further simplifying the structure of this water-air mixing nozzle.

[0064] Preferably, three water inlet holes 109, three air inlet holes 110, three water supply pipes 102, three air supply pipes 103, and three water-air jet holes 104 are provided; the water inlet holes 109 and the air inlet holes 110 are equidistantly arranged on the outer side of the water-air nozzle body 1 in the circumferential direction, and the water-air jet holes 104 are equidistantly arranged on the lower end face of the water-air nozzle body 1 in the circumferential direction.

[0065] With the center of the cross-section of the water-air nozzle body 1 as the center, three water-air ejection holes 104 are located on the same circle, with each water-air ejection hole 104 forming a line with the center, and the lines forming an angle of 120° with each other. Correspondingly, from the perspective of smooth transmission and reasonable structure, in a transmission channel, the water inlet hole 109, the air inlet hole 110, and the water-air ejection hole 104 are arranged from top to bottom. The above structural arrangement can ensure more uniform air intake, water intake, and water-air mixing, ensuring the cooling and cleaning effect.

[0066] like Figure 4 As shown, preferably, the outer side of the tip fixing plug 2 has multiple sleeve washer fixing portions 202 protruding outward. These sleeve washer fixing portions 202 are formed circumferentially on the outer side of the tip fixing plug 2, and are equidistantly distributed axially along the tip fixing plug 2. Each sleeve washer fixing portion 202 is provided with a sleeve sealing ring. When the tip fixing plug 2 is fitted inside the water / air nozzle body 1, the tip fixing plug 2 abuts against the water / air nozzle body 1 through the sleeve sealing rings on the multiple sleeve washer fixing portions 202.

[0067] Based on the above structure, the sleeve sealing ring on the sleeve washer fixing part 202 abuts against the inside of the water / air nozzle body 1, which can effectively ensure the sealing between the tip fixing plug 2 and the water / air nozzle body 1, preventing water / air leakage from affecting electronic components. Specifically, three sleeve washer fixing parts and three sleeve sealing rings are provided to ensure the sealing effect.

[0068] like Figure 4As shown, preferably, the outer side of the tip fixing plug 2 protrudes outward to form a first clamping ring 203 and a second clamping ring 204, which are spaced apart. When the tip fixing plug 2 is fixedly installed inside the first mounting sleeve 101, the first clamping ring 203 and the second clamping ring 204 are exposed outside the first mounting sleeve 101. Based on the above structure, the spaced first clamping ring 203 and the second clamping ring 204 provide force points, facilitating the removal of the tip fixing plug 2 from the water / air nozzle body 1. When it is necessary to remove the tip fixing plug 2, it can be clamped and fixed between the first clamping ring 203 and the second clamping ring 204 by a clamp, and then external force can be applied to remove the tip fixing plug 2.

[0069] like Figure 5 As shown, a limiting ring 111 is provided on the water / air nozzle body 1, and the limiting ring 111 is located at the upper end of the first mounting sleeve 101; when the tip fixing plug 2 is fixedly installed inside the first mounting sleeve 101, the upper end of the tip fixing plug 2 abuts against the limiting ring 111. By providing the limiting ring 111 on the water / air nozzle body 1, the tip fixing plug 2 is prevented from sliding out of the first mounting sleeve 101 during the installation and fixing process.

[0070] Preferably, the water / air nozzle body 1, the tip fixing plug 2, and the laser emission tip 3 are integrally formed metal structures. Using an integrally formed metal structure for the water / air nozzle body 1, the tip fixing plug 2, and the laser emission tip 3 gives this structure advantages such as ease of manufacturing and long service life.

[0071] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A laser oral treatment instrument water-gas mixing nozzle, characterized in that, The utility model relates to a water and gas spray head, which comprises: a water and gas spray head body in a cylindrical structure, the water and gas spray head body is sleeved in a therapeutic instrument shell, a first mounting sleeve is arranged in the water and gas spray head body, the first mounting sleeve is located in the center of the water and gas spray head body and is arranged in the axial direction, a water pipeline, a gas pipeline and a water and gas outlet hole are arranged in the side wall of the water and gas spray head body, the water pipeline and the gas pipeline are respectively communicated with the water and gas outlet hole; a tip fixing insert in a cylindrical structure, the tip fixing insert is fixedly arranged in the first mounting sleeve, a second mounting sleeve is arranged in the tip fixing insert, the second mounting sleeve is located in the center of the tip fixing insert and is arranged in the axial direction; a laser outlet tip is fixedly arranged in the second mounting sleeve, an optical fiber is embedded in the laser outlet tip, both ends of the optical fiber are exposed at both ends of the laser outlet tip, the optical fiber is distributed along the length direction of the laser outlet tip, and the water and gas outlet hole is oriented in the same direction as the laser outlet tip.

2. The water and air mixing nozzle of the laser oral treatment instrument according to claim 1, characterized in that, The outer side of the water and gas spray head body is outwardly convex to form a first body gasket fixing portion, a second body gasket fixing portion and a third body gasket fixing portion, the first body gasket fixing portion, the second body gasket fixing portion and the third body gasket fixing portion are formed on the outer side of the water and gas spray head body along the circumferential direction of the water and gas spray head body, and the first body gasket fixing portion, the second body gasket fixing portion and the third body gasket fixing portion are equidistantly distributed along the axial direction of the water and gas spray head body; a spray head sealing ring is fixedly arranged on each of the first body gasket fixing portion, the second body gasket fixing portion and the third body gasket fixing portion; when the water and gas spray head body is sleeved in the therapeutic instrument shell, the water and gas spray head body is abutted in the therapeutic instrument shell through the spray head sealing rings on the first body gasket fixing portion, the second body gasket fixing portion and the third spray head gasket.

3. The water and air mixing nozzle of claim 2, wherein, A liquid channel and a gas channel are formed between the water and gas spray head body and the therapeutic instrument shell, the outer side of the water and gas spray head body is provided with a water inlet hole and a gas inlet hole, the liquid channel is communicated with the water inlet end of the water pipeline through the water inlet hole, the gas channel is communicated with the gas inlet end of the gas pipeline through the gas inlet hole, and the water outlet end of the water pipeline and the gas outlet end of the gas pipeline converge in the water and gas outlet hole.

4. The water and air mixing nozzle of claim 3, wherein, The water and gas spray head body forms the liquid channel by abutting the therapeutic instrument shell through the spray head sealing rings on the first body gasket fixing portion and the second body gasket fixing portion; The water and gas spray head body forms the gas channel by abutting the therapeutic instrument shell through the spray head sealing rings on the second body gasket fixing portion and the third body gasket fixing portion.

5. The water and air mixing nozzle of claim 3, wherein, The water inlet hole, the gas inlet hole, the water pipeline, the gas pipeline and the water and gas outlet hole are respectively provided with three. The water inlet hole and the air inlet hole are equidistantly arranged on the outer side of the water-air nozzle body in the circumferential direction, and the water-air outlet hole is equidistantly arranged on the lower end surface of the water-air nozzle body in the circumferential direction.

6. The water and air mixing nozzle of the laser oral treatment instrument according to claim 1, characterized in that, The outer side of the tip fixing insert is outwardly convex and forms a plurality of sleeve gasket fixing portions, the sleeve gasket fixing portions are formed on the outer side of the tip fixing insert in the circumferential direction of the tip fixing insert, and the plurality of sleeve gasket fixing portions are equidistantly distributed in the axial direction of the tip fixing insert. The sleeve gasket fixing portions are provided with sleeve sealing rings. When the tip fixing insert is sleeved in the water-air nozzle body, the tip fixing insert abuts against the water-air nozzle body through the sleeve sealing rings on the plurality of sleeve gasket fixing portions.

7. The water and air mixing nozzle of claim 6, wherein, The outer side of the tip fixing insert is outwardly convex and forms a first clamping ring and a second clamping ring, and the first clamping ring and the second clamping ring are arranged at intervals. When the tip fixing insert is fixedly arranged in the first mounting sleeve, the first clamping ring and the second clamping ring are exposed outside the first mounting sleeve.

8. The water and air mixing nozzle of claim 6, wherein, The sleeve gasket fixing portions are provided with three sleeve sealing rings.

9. The water and air mixing nozzle of the laser oral treatment instrument according to claim 1, characterized in that, The water-air nozzle body is provided with a limiting ring, and the limiting ring is located at the upper end of the first mounting sleeve. When the tip fixing insert is fixedly arranged in the first mounting sleeve, the upper end of the tip fixing insert abuts against the limiting ring.

10. The water and air mixing nozzle of any one of claims 1-9, wherein, The water-air nozzle body, the tip fixing insert and the laser outlet tip are integrally formed metal structures.

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