WO2008014692A1 - Pièce à main à turbine grande vitesse, à usage unique, destinée à une fraise dentaire - Google Patents

Pièce à main à turbine grande vitesse, à usage unique, destinée à une fraise dentaire Download PDF

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Publication number
WO2008014692A1
WO2008014692A1 PCT/CN2007/070111 CN2007070111W WO2008014692A1 WO 2008014692 A1 WO2008014692 A1 WO 2008014692A1 CN 2007070111 W CN2007070111 W CN 2007070111W WO 2008014692 A1 WO2008014692 A1 WO 2008014692A1
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WIPO (PCT)
Prior art keywords
quick
passage
handle
water
wall
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Application number
PCT/CN2007/070111
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English (en)
French (fr)
Inventor
Fudong Zhang
Original Assignee
Beijing North Pole Dental Handpieces Co. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Beijing North Pole Dental Handpieces Co. Ltd. filed Critical Beijing North Pole Dental Handpieces Co. Ltd.
Publication of WO2008014692A1 publication Critical patent/WO2008014692A1/zh
Priority to US12/208,490 priority Critical patent/US20090075233A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/02—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools
    • A61C1/05—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools with turbine drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/02—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools
    • A61C1/05—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools with turbine drive
    • A61C1/052—Ducts for supplying driving or cooling fluid, e.g. air, water
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/0061—Air and water supply systems; Valves specially adapted therefor

Definitions

  • the present invention pertains to a dental medical device, and more particularly to a hand-held device for drilling a tooth.
  • the high-speed vortex drill mobile phone is a tool for doctors to grind teeth. It uses clean compressed air as the power source.
  • the turbine is rotated at a speed of about 300,000 rpm, which drives the cutting tool (the needle). tooth.
  • doctors use high-speed turbine dental drills for treatment, they will inevitably touch the patient's teeth, oral mucosa, teeth and blood. If during the treatment, the doctor shares a dental drill for all patients, it will lead to the spread of certain diseases, especially those transmitted through blood saliva and mucous membranes, such as AIDS and hepatitis.
  • the high-speed turbo drill mobile phone drives the drill pin to rotate by the air turbine
  • the doctor disconnects the foot switch and the turbine stops supplying air
  • the turbine still rotates for a period of time by inertia, at this time the turbine rotor system It became a turbo compressor.
  • the pressed gas is discharged to the original turbine chamber exhaust port, and the negative pressure is formed at the opening of the center of the turbine shaft, which will suck the blood liquid formed in the oral grinding into the turbine mobile phone, and even suck the mobile phone connector.
  • the connection pipe When used again, the dirt will squirt into the next patient's mouth, causing contamination and disease transmission.
  • the cooling water system of the turbine mobile phone will also cause the same pollution as described above due to the pressure change caused by the moment of water stoppage.
  • the hospital currently adopts methods such as high-temperature steam sterilization or sterilization liquid immersion. Although it can produce certain effects, it is often not completely disinfected.
  • Traditional turbo dental drills have high speed and high precision, so the manufacturing cost is high, and it is not suitable to be discarded after one-time use. In order to reduce the manufacturing cost, the method of reducing the performance is often adopted, which cannot meet the requirements of the doctor.
  • the Chinese patent application with the publication number CN2510028Y discloses a single-use high-speed turbo drill mobile phone, which greatly reduces the cost and can be discarded after a single use, thereby effectively avoiding iatrogenic cross infection.
  • the dental drill includes a handpiece, a drill needle, a front handle, a rear handle and a quick-release gas-water joint, as shown in Fig. 1.
  • the outer casing of the rear handle is a hollow thin-walled tube, and the inner assembly of the hollow thin-walled tube There are a plurality of parts of the positioning sleeve, the sealing rubber pad, the nut and the connecting sleeve, so that the water pipe 6 of the water pipe 6 passes through the positioning sleeve 7 and the sealing rubber pad 8, and the connecting sleeve 11 is pressed against the sealing rubber pad 8 with the nut 9 and Seal the gas pipes 5, 6.
  • the above handle The structure is still complicated, and the assembly is time consuming and still needs further improvement.
  • the high-speed vortex drill mobile phone has a complicated structure, a large number of parts, a high cost, and a long assembly time.
  • the high-speed vortex drill mobile phone has a complicated structure, a large number of parts, a high cost, and a long assembly time.
  • the single-use high-speed turbine dental handpiece of the present invention comprises a handpiece, a drill needle, a front handle, a rear handle, and a quick-release gas-water joint, wherein the front end of the handle is connected to the front handle, and then The end is connected with the quick-injection gas-water joint, and the feature is: the rear handle is a solid integral structure of the inner perforation of the engineering plastic once molded, and the water pipe passage is arranged at the axial center of the front handle, and the axial eccentric position is set. There are tracheal channels and return air passages. The air pipes and water pipes from the machine head are respectively inserted into the above-mentioned air pipe passages and water pipe passages.
  • the gap is sealed by the sealing ring, and the rear center of the rear handle is convex to form a quick-insertion inner pipe, which is inserted quickly.
  • the inner end of the inner pipe of the inner pipe is connected with a one-way valve, and the one-way valve is inserted into the water pipe passage at the front part of the rear handle, and the outer wall of the one-way valve which is in contact with the inner wall of the water pipe is embedded with a sealing ring, and the outlet of the return air passage Located between the outer wall of the rear handle and the quick-release inner tube.
  • valve body of the above-mentioned one-way valve is provided with a water outlet, and the outer wall of the valve body outlet is tightly fitted with a rubber tube.
  • the process hole is provided at the symmetrical position of the rear handle and the return air passage.
  • the cross section of the above-mentioned tracheal passage may be crescent, elliptical or circular.
  • the outer wall of the quick-inserted inner tube is provided with a ring groove, and the corresponding inner wall of the quick-injection gas-water joint tube is embedded with a positioning steel ball.
  • the outer wall of the quick-insertion inner tube is provided with a ring groove, and the outer circle of the quick-insertion inner tube can be tapered, and the corresponding inner wall of the quick-injection gas-water joint tube is embedded with a positioning steel ball.
  • the rear handle structure is an integrated design, the structure is simple, the cost is low, and the whole rear handle is changed from a plurality of metal or plastic parts into one part, which greatly reduces the cost and avoids the trouble of assembling multiple parts. It saves processing time, reduces the chance of failure, improves work reliability, further reduces product cost, and is suitable for disposable products.
  • the whole rear handle is molded by engineering plastics once, which is light in weight and good in strength.
  • the invention provides a waterproof back suction check valve in the water inlet channel, which can effectively prevent the water pressure from being changed.
  • the cooperation with the positioning of the steel ball on the inner wall of the quick-injection gas pipe makes the replacement of the quick-connect gas pipe joint very convenient. Since the tail fast-inserted inner tube is made of a thin-walled plastic material, the plastic material has a certain elasticity, and the quick-insertion gas-water joint can be directly inserted, and the doctor does not need to pull the snap ring on the air inlet connector, and the installation is more convenient. This is not possible with a general metal back handle.
  • the tail of the rear handle can be designed into various structures of different sizes, can be inserted from the dentistry
  • Figure 1 is a schematic diagram of the structure of a conventional single-use high-speed turbine dental drill.
  • Figure 2 is a schematic view showing the structure of the present invention
  • Figure 3 is a cross-sectional view of the rear handle of the present invention in another direction, i.e., rotated by 90°;
  • Figure 4 is a schematic view of the A-direction structure of the rear handle of Figure 1;
  • FIG. 5 is a schematic view showing the structure of the pressure water passing through the waterproof back suction check valve
  • Figure 6 is a schematic diagram of the water-repellent suction check valve pressure water disconnected state, and the suckback pollutant liquid is prevented from flowing back.
  • a water pipe seals the 0-ring.
  • the front end of the rear handle 4 is provided with an intake passage 42 and a water inlet passage 41.
  • the air pipe 5 and the water pipe 6 from the handpiece 1 are inserted into the intake port 42 and the water inlet port 41.
  • Their connection gaps are sealed by a gas pipe seal 0-ring 16 and a water pipe seal 0-ring 17 respectively.
  • a waterproof back suction check valve 14 is also provided in the water inlet passage 41, and the quick insertion inner tube 45 at the rear of the rear handle can be designed into various structures of different sizes, and can be inserted into various quick insertion gas from the dental treatment machine. Water joint 13.
  • One end of the rear handle is inserted into the front handle 3 of the mobile phone, and the other end is connected to the quick-connect gas connection 13 from the dental treatment machine.
  • the quick-release gas joint cover 12 is pulled backward, so that the three positioning steel balls 15 in the joint 13 enter the ring groove 451 of the quick-release inner tube 45.
  • the head end of the quick-insertion inner tube 45 connected to the quick-injection gas-water joint 13 is a thin-walled tubular structure, and the outer wall of the quick-insertion inner tube 45 is provided with a ring groove 451, and is fast.
  • the inner tube outer circle 452 is tapered, so that the quick-injection gas-water joint 13 can be directly inserted into the quick-release inner tube 45 without pulling the sheath 12, and at this time, the three steel balls 15 of the joint are fastened.
  • the deformation of the head of the inner tube 45 is inserted, and the positioning steel ball 15 is introduced into the annular groove 4 51.
  • the outlet 46 enters the corresponding channel in the quick-release gas connection 13 and is discharged into the atmosphere or discharged into the corresponding portion of the dental treatment machine.
  • the outlet of the return air passage 46 is located between the outer wall of the rear handle and the quick-release inner tube.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Description

说明书 一次性使用高速涡轮牙钻手机
技术领域
[1] 本发明属于一种牙科医疗器械， 特别是一种钻磨牙齿的手持器具。
背景技术
[2] 高速涡钻牙钻手机是医生钻磨牙齿的器具， 它以清洁的压缩空气为动力源， 吹 动涡轮以每分钟 30万转左右的转速旋转， 带动切削刀具（牙针）钻磨牙齿。 医 生在使用高速涡轮牙钻手机进行治疗时， 必然会接触患者的牙齿、 口腔粘膜、 牙及血液等。 如果在治疗过程中， 医生给所有患者共用一支牙钻手机， 在消毒 灭菌不彻底时， 将会导致某些疾病的传播， 特别是通过血液唾液及粘膜传播的 疾病如艾滋病、 肝炎等。 特别值得重视的是： 由于高速涡轮牙钻手机是通过空 气涡轮带动钻针旋转的， 当医生断开脚踏开关， 涡轮停止供气时， 涡轮依靠惯 性仍然会旋转一段时间， 此时涡轮转子系统变成了涡轮压气机。 压出的气体会 排向原来的涡轮室排气口， 而涡轮轴中心的两端开口处形成负压， 会将口腔磨 削中形成的血污液吸至涡轮手机中， 甚至会吸向手机接头及连接管道中。 当再 次使用时， 此污物就会喷向下一个患者口腔中， 导致污染和疾病传播。 另外， 涡轮手机的冷却水系统由于停水瞬间产生的压力变化， 也将导致回吸作用产生 如上述同样的污染。 为了解决上述的交义感染问题， 目前医院采用了高温蒸汽 灭菌或灭菌液浸泡等方法。 虽然能产生一定的效果， 但往往消毒并不彻底。 传 统涡轮牙钻手机转速高、 精度高， 因此制造成本高昂， 不宜一次性使用后抛弃 。 为了降低制造成本， 往往采用了降低使用性能的办法， 这又不能满足医生的 使用要求。 公开号为 CN2510028Y的中国专利申请公开了一种一次性使用高速涡 轮牙钻手机， 大大降低了造价， 一次性使用后便可抛弃， 有效避免了医源性交 叉感染。 该牙钻手机包括机头、 钻针、 前机柄， 后机柄和快插气水接头， 如图 1 所示， 后机柄的外壳为一空心薄壁管， 空心薄壁管的内部组装有定位套、 密封 胶垫、 螺母、 连接套管多个零件， 使水管 6气管 5穿过定位套 7及密封胶垫 8， 用 螺母 9将连接套管 11压紧在密封胶垫 8上并将气水管 5、 6封住。 但上述后机柄的 结构还较复杂， 装配比较耗时， 仍需进一步改进。
对发明的公开
技术问题
[3] 本发明的目的是提供一种一次性使用高速涡轮牙钻手机， 解决现有
高速涡钻牙钻手机的后机柄结构复杂、 零件多、 成本高、 装配耗时多的问题。 技术解决方案
[4] 本发明的目的是提供一种一次性使用高速涡轮牙钻手机， 解决现有
高速涡钻牙钻手机的后机柄结构复杂、 零件多、 成本高、 装配耗时多的问题。
[5] 本发明的这种一次性使用高速涡轮牙钻手机， 包括机头、 钻针、 前机柄， 后机 柄、 快插气水接头， 其后机柄前端与前机柄相连， 后端与快插气水接头相连， 其特征在于： 后机柄为工程塑料一次模压成型的内穿孔道实心整体结构， 后机 柄前部的轴心位置设有水管通道， 轴向的偏心位置设有气管通道和回气通道， 来自机头的气管、 水管分别插入上述的气管通道和水管通道， 间隙由密封圈密 封， 后机柄的后端中心凸出， 形成一个快插内管， 快插内管的中心孔道内端连 接一个单向阀， 该单向阀插入后机柄前部的水管通道中， 与水管通道内壁接触 的单向阀阀体外壁嵌有密封圈， 回气通道的出口位于后机柄外壁与快插内管之 间。
[6] 上述单向阀的阀体上开有出水口， 阀体出水口外壁紧箍橡胶管。
[7] 上述后机柄与回气通道的对称位置设有工艺孔。
[8] 上述气管通道的横断面可以是月牙形、 椭圆形或圆形。
[9] 上述快插内管外壁上设有环槽， 对应的快插气水接头管内壁嵌有定位钢球。
[10] 上述快插内管外壁上设有环槽， 快插内管外圆可为锥形， 对应的快插气水接头 管内壁嵌有定位钢球。
有益效果
[11] 1、 后机柄结构为一体化设计， 结构简单， 造价低廉， 整个后机柄由多个金属 或塑料零件变成了一个零件， 大大降低了成本， 同时避免多个零件组装的麻烦 ， 节省了加工工时， 减少了发生故障的机会， 并提高了工作可靠性， 进一步降 低了产品成本， 适合一次性产品使用。 [12] 2、 整个后机柄用工程塑料一次模压成型， 重量轻， 强度好。
[13] 3、 本发明在进水孔道中设防水回吸单向阀， 可有效阻止由于水压变化而产生
的水回吸污染的发生。 此设计也简化了安装手续， 增加了可靠性， 安装方便， 并增加一项防回吸功能。
[14] 4、 插接方便， 节省安装工时， 同时也方便医生更换手机， 快插内管外壁环槽
与快插气水接头管内壁定位钢球的配合， 使快插气水接头更换十分便捷。 由于 尾部快插内管为薄壁塑料材料制成， 因塑料材料具有一定弹性， 可实现快插气 水接头直插， 医生无需后拉快插气水接头上的止动环， 安装更加方便， 这是一 般金属质后机柄无法实现的。
[15] 5、 适应性好， 后机柄的尾部可设计成不同尺寸的各种结构， 可接插来自牙科
治疗机的各种快插气水接头。
附图说明
[16] 图 1是已有的一次性使用高速涡轮牙钻手机结构示意图。
[17] 图 2是本发明的结构示意图；
[18] 图 3是本发明后机柄另一方向、 即旋转 90° 的剖视图；
[19] 图 4是图 1 中后机柄的 A 向结构示意图；
[20] 图 5是防水回吸单向阀压力水通过状态的结构示意图；
[21] 图 6是防水回吸单向阀压力水断开状态， 回吸污染液被阻止回流的示意图。
[22] 1 机头体、 2 钻针、 3 前机柄、 5 气管、 6 水管、 7 定位套、 8 密封胶垫、 9 螺母、 10 套环、 11 连接套管、 12 快插气水接头护套、 13 快插气水接头、 15 —定位钢球、 16 —气管密封 0型圈、 17
一水管密封 0型圈。
[23] 4 后机柄、 41 一进水孔道、 42 —进气孔道、 43 —回气通道、 44
一工艺孔、 45 - 快插内管、 46 —回气通道的出口、 451 —环槽、 452 一快插内管外圆。
[24] 14 单向阀、 141 一橡胶管、 142 —出水口、 143 —密封圈、 144
一阀体。
本发明的最佳实施方式 [25] 参见图 2、 图 4， 后机柄 4的前端设进气孔道 42和进水孔道 41。 来自机头 1的气管 5和水管 6插入进气孔道 42和进水孔道 41。 它们的连接间隙分别以气管密封 0型圈 16、 水管密封 0型圈 17进行密封。 在进水孔道 41中还设有防水回吸单向阀 14， 后 机柄尾部的快插内管 45可设计成不同尺寸的各种结构， 可接插来自牙科治疗机 的各种快插气水接头 13。
[26] 后机柄一端与手机前机柄 3插接， 另一端与来自牙科治疗机的快插气水接头 13 相接。 连接时需向后拉动快插气水接头护套 12， 使接头 13中的三个定位钢球 15 进入快插内管 45的环槽 451中。 松开护套 12， 便可安装好快插气水接头。 因本发 明后机柄为工程塑料制造， 与快插气水接头 13相连的快插内管 45的头端为薄壁 管形结构， 快插内管 45的外壁设有环槽 451， 并且快插内管外圆 452为锥形， 因 此也可直接将快插气水接头 13插入快插内管 45中， 而无需拉动护套 12， 此时在 接头三个钢球 15的作用下靠快插内管 45头部的变形， 而使定位钢球 15进入环槽 4 51。
[27] 参见图 3， 来自机头的涡轮回气， 按箭头方向， 自前机柄内孔进入后机柄两个 横截面为月牙形的回气通道 43， 从后机柄尾部的回气通道的出口 46， 进入快插 气水接头 13中相应孔道排入大气或排入牙科治疗机相应部分。 回气通道的出口 4 6位于后机柄外壁与快插内管之间 。
[28] 参见图 2、 5， 当牙钻手机工作、 钻针 2旋转时， 来自快插气水接头 13的压力水 进入单向阀 14， 自阀体的出水口 142顶开橡胶管 141而流进水管 6， 从机头射出， 用以冷却钻针 2。 单向阀为一个独立部件， 可方便地安装进水管通道中， 也可方 便取出， 与水管通道接触的阀体 144的外壁嵌有密封圈 143。
[29] 参见图 2、 6， 当牙钻手机停止工作时， 在水压变化情况下， 若有回吸污染液流 回水道是不可能的， 因为在牙钻手机停止工作后进水压力消失， 橡胶管 141立刻 就能封闭单向阀 14的出水口 142， 因此能可靠地防止了水回吸的发生。

Claims

权利要求书
[1] 1、 一种一次性使用高速涡轮牙钻手机， 包括机头、 钻针、 前机柄， 后机柄
、 快插气水接头， 其后机柄前端与前机柄相连， 后端与快插气水接头相连 ， 其特征在于： 后机柄为工程塑料一次模压成型的内穿孔道实心整体结构 ， 后机柄前部的轴心位置设有水管通道， 轴向的偏心位置设有气管通道和 回气通道， 来自机头的气管、 水管分别插入上述的气管通道和水管通道， 间隙由密封圈密封， 后机柄的后端中心凸出， 形成一个快插内管， 快插内 管的中心孔道内端连接一个单向阀， 该单向阀插入后机柄前部的水管通道 中， 与水管通道内壁接触的单向阀阀体外壁嵌有密封圈， 回气通道的出口 位于后机柄外壁与快插内管之间。
[2] 2、 根据权利要求 1所述的一次性使用高速涡轮牙钻手机， 其特征在于： 上 述单向阀的阀体上开有出水口， 阀体出水口外壁紧箍橡胶管。
[3] 3、 根据权利要求 1或 2所述的一次性使用高速涡轮牙钻手机， 其特征在于： 上述后机柄与回气通道的对称位置设有工艺孔。
[4] 4、 根据权利要求 1或 2所述的一次性使用高速涡轮牙钻手机， 其特征在于： 上述气管通道的横断面是月牙形、 椭圆形或圆形。
[5] 5、 根据权利要求 1或 2所述的一次性使用高速涡轮牙钻手机， 其特征在于： 上述快插内管外壁上设有环槽， 对应的快插气水接头管内壁嵌有定位钢球
[6] 6、 根据权利要求 1或 2所述的一次性使用高速涡轮牙钻手机， 其特征在于： 上述快插内管外壁上设有环槽， 快插内管外圆为锥形， 对应的快插气水接 头管内壁嵌有定位钢球。
PCT/CN2007/070111 2006-07-25 2007-06-14 Pièce à main à turbine grande vitesse, à usage unique, destinée à une fraise dentaire WO2008014692A1 (fr)

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CN2006102007424A CN1887236B (zh) 2006-07-25 2006-07-25 一次性使用高速涡轮牙钻手机

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CN1887236A (zh) 2007-01-03
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