WO2006081746A1 - Distributeur automatique à distance pour nucléine - Google Patents

Distributeur automatique à distance pour nucléine Download PDF

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Publication number
WO2006081746A1
WO2006081746A1 PCT/CN2006/000112 CN2006000112W WO2006081746A1 WO 2006081746 A1 WO2006081746 A1 WO 2006081746A1 CN 2006000112 W CN2006000112 W CN 2006000112W WO 2006081746 A1 WO2006081746 A1 WO 2006081746A1
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WO
WIPO (PCT)
Prior art keywords
medicine
dispensing
cylinder
needle
valve
Prior art date
Application number
PCT/CN2006/000112
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English (en)
French (fr)
Inventor
Qinwen Zeng
Original Assignee
The Second People's Hospital Of Chongqing
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Publication date
Application filed by The Second People's Hospital Of Chongqing filed Critical The Second People's Hospital Of Chongqing
Publication of WO2006081746A1 publication Critical patent/WO2006081746A1/zh

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142Pressure infusion, e.g. using pumps
    • A61M5/145Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/1452Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00General characteristics of the apparatus
    • A61M2205/35Communication
    • A61M2205/3546Range
    • A61M2205/3561Range local, e.g. within room or hospital

Definitions

  • the utility model relates to a medicine dispensing device, in particular to a medicine dispensing device for dispensing a nuclear medicine liquid.
  • Clinical nuclear medicine is a discipline that uses radionuclide examination and treatment of diseases. With the development and use of nuclear chemotherapeutic technology in China, the radiation protection problems of practitioners and patients are more prominent, which affects the clinical application of radionuclide examination and treatment. At present, in the examination and treatment of 131 iodine in the clinical medicine department, due to the lack of special protective equipment that is well protected and easy to operate, the preparation and distribution of 131 sodium iodide liquid is manual in the "radiation shielding box". "Incomplete, there are widespread shortcomings such as poor protection, volatility, close-range operation, and extremely inconvenient use, which exposes patients and practitioners to a large number of unnecessary nuclear exposures.
  • a utility model patent entitled "Nuclear Safety Drug Dispenser” is disclosed in CN2490101Y, which is a storage bottle and a nucleus-containing lead tank placed in a sealed lead box through a check valve.
  • the flow tubes are connected to each other, and the other end of the medicine tube connected to the bottom of the medicine bottle protrudes out of the lead box, and the air meter outside the lead box communicates with the medicine bottle through the air inlet tube with the controllable check valve.
  • the pressurizer outside the lead box communicates with the lead can through the intake pipe and the solvent bottle and the inlet pipe disposed on the bracket.
  • the purpose of the utility model is to provide an automatic long-distance radionuclide dispensing instrument which is simple in structure, simple in operation, accurate in medicine and strong in protection.
  • the object of the present invention is achieved by the technical solution, which comprises a housing and a dispensing mechanism and a dispensing mechanism controlled by the control circuit, wherein the dispensing mechanism is provided with a medicine in the lead seal body supported by the bracket.
  • a cylinder, a piston in the medicine cylinder, a piston rod disposed on the piston passes through the medicine cylinder, and is connected to the stepping motor through an axial movement mechanism, and the medicine passage communicating with the medicine cylinder passes through the dispensing valve and the medicine discharging tube respectively.
  • the medicine tube is connected.
  • the utility model works as follows: under the control of the control circuit, the stepping motor is started, the piston is pulled down by the axial moving mechanism and the piston rod, and a negative pressure is formed in the medicine cylinder, so that the liquid medicine to be dispensed is sequentially taken from the medicine.
  • the tube, dispensing valve, and drug passage enter the tank, which is the process of feeding.
  • the control circuit controls the step motor, pushes the piston upward by the axial movement mechanism and the piston rod, first discharges unnecessary air, and then dispenses the medicine when it is opened, and pushes the piston by the rotation of the stepping motor.
  • the control circuit of the utility model can be connected with the microcomputer, and realizes long-distance automatic control under the cooperation of the monitoring system, so the operation is very simple, the nuclear irradiation is completely avoided, the labor intensity is reduced, and the work efficiency is improved.
  • the utility model Due to the adoption of the above technical solution, the utility model has the advantages of compact structure, convenient operation, strong protection, stable and reliable work, accurate measurement and high work efficiency, and can be automatically controlled at a long distance, and the operator is completely nuclear-free. Under the environment, the whole process of taking medicine, dispensing, and dispensing medicine is automatically completed, which not only makes the operator avoid nuclear irradiation, but also significantly improves work efficiency.
  • Figure 1 is a schematic view of the structure of the present invention
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • Figure 3 is a schematic structural view of a dispensing valve
  • Figure 4 is a schematic view showing the structure of the dispensing needle.
  • the utility model comprises a housing 1 and a dispensing mechanism and a dispensing mechanism controlled by the control circuit, characterized in that: the dispensing mechanism
  • the medicine cylinder 4 is disposed in the sealing body 3 supported by the bracket 2
  • the piston 4 is disposed in the medicine cylinder 4
  • the piston rod 6 disposed on the piston 5 passes through the medicine cylinder 4, and passes through the axial movement mechanism and the stepping motor.
  • 8 is connected, and the drug-passing passage 9 communicating with the inside of the medicine cylinder 4 is communicated with the medicine discharge tube 11 and the medicine supply tube 12 through the dispensing valve 10, respectively.
  • the utility model works as follows: under the control of the control circuit, the stepping motor 8 is started, the piston 5 is pulled down by the axial movement mechanism and the piston rod 6, and a negative pressure is formed in the medicine cylinder 4 to make the liquid medicine to be dispensed.
  • the medicine tank 4 is sequentially accessed from the medicine feeding tube 12, the dispensing valve 10, and the medicine passage 9, which is a medicine feeding process.
  • the control circuit controls the step motor 8, pushes the piston 5 upward by the axial movement mechanism and the piston rod 6, first discharges unnecessary air, and then dispenses when dispensing, by the rotation of the stepping motor 8.
  • the medicine liquid is sent to the patient through the medicine passage 9, the dispensing valve 10, and the medicine discharge tube 11, and the amount of the medicine is divided, and the control circuit can be freely adjusted by the stepping motor 8.
  • the control circuit of the utility model can be connected with the microcomputer, and realizes long-distance automatic control under the cooperation of the monitoring system, so the operation is very simple, the nuclear irradiation is completely avoided, the labor intensity is reduced, and the work efficiency is improved.
  • the axial movement mechanism may be composed of a screw rod 48 , a push block 7 and a bracket 2 , the piston rod 6 is fixed on the push block ,, and the screw hole 49 on the push block 7 is engaged with the screw rod
  • both ends of the lead screw 48 are connected to the bracket 2 via bearings, and one end of the lead screw 48 is connected to the rotating shaft of the stepping motor 8.
  • the axial movement mechanism operates in such a manner that the stepper motor 8 drives the lead screw 48 to rotate counterclockwise or clockwise, and the lead screw 48 moves the push block 7 up or down, thereby pushing the piston 5 up or down through the piston rod 6. shift.
  • the push block 7 may be provided with the anti-rotation guide hole 50, and the anti-rotation guide rod 51 fixed to the bracket 2 is movably passed through the anti-rotation guide hole 50.
  • the dispensing valve 10 is composed of a valve body 13, an upper valve cover 14, a lower valve cover 15, an upper valve core 16, and a lower valve core 17, and a valve body 13 and an upper valve cover are disposed in the valve body 13. 14 and the lower bonnet.
  • the upper valve chamber 18 and the lower valve chamber 19 are enclosed together, and the middle portion of the valve body 13 is provided with an over-current passage 20 communicating with the upper valve chamber 18 and the lower valve chamber 19, and the upper valve cover 14
  • a discharge passage 21 communicating with the upper valve chamber 18 is provided
  • the lower valve cover 15 is provided with a medicine passage 22 communicating with the lower valve chamber 19, and upper valve cores are respectively disposed in the upper valve chamber 18 and the lower valve chamber 19 16 and the lower spool 17, the upper spool 16 and the lower spool 17 are each formed by a circular valve piece 23 and an anti-bias lever 24 that cooperate with the overflow hole, and the anti-bias lever 24 is fixed to the valve piece 23, and
  • the valve passage 23 is perpendicular to the valve passage 23, and the flow passage 20, the discharge passage 21, and the medicine passage 22 communicate with the medicine passage 9, the medicine discharge tube 11, and the medicine supply tube 12, respectively.
  • the dispensing valve works like this: When the medicine cylinder 4 is in the medicine, the medicine liquid pushes the lower valve core through the medicine feeding tube 12 and the medicine feeding passage 22, so that the hole of the lower valve chamber is separated from the lower valve core, and the lower valve chamber is in an open state. Under the action of negative pressure, the upper spool is pushed down to block the hole of the upper valve chamber, and the upper valve chamber is closed. At this time, the liquid can only enter through the overflow passage 20 and the drug passage 9 Medicine tank.
  • the liquid medicine pushes the lower valve core through the medicine passage 9 and the overflow passage 20 to block the hole of the lower valve chamber, and the lower valve chamber is closed, and the liquid medicine can only push open the upper valve core to make the upper portion
  • the valve chamber is in an open state, and the liquid medicine flows out through the medicine discharge passage 21 and the medicine discharge tube 11 to achieve the purpose of dispensing medicine.
  • the dispensing mechanism includes a support frame 25, a transposition cylinder 26, a cover cylinder 27 and a pin cylinder 28, and the support frame 25 is provided with an upper support plate 29 and a lower support plate 30, and the upper support The plate 29 is provided with a displacement cylinder 26 and a double slide rail 31.
  • the slider 32 is axially movablely constrained on the double slide rail 31.
  • the slider 32 is connected to the shift cylinder 26, and the slider 32 is provided with a cover cylinder 27 And the pin cylinder 28, the uncovering cylinder 27 is connected to the uncovering device 33, the pin cylinder 28 is connected to the dispensing needle 34, and the outlet tube 35 on the dispensing needle 34 is in communication with the medicine feeding tube 12 of the dispensing mechanism, the dispensing needle 34
  • the upper inlet pipe 36 communicates with the water container 37 on the lower support plate 30, and the lower support plate 30 is provided with a positioning stopper 38.
  • the dispensing mechanism works as follows: The lead canister containing the vial is placed on the support plate 30 and positioned by the positioning block 38. The vial is filled with the radionuclide solution, and the control circuit controls the transposition cylinder 26 to push and pull the slider 32. Moving along the double slide rail 31, the uncovering cylinder 27 on the slider 32 is first corresponding to the lead canister, the control circuit controls the uncovering cylinder to push the uncovering cover 33 downward, and then controls the uncovering device 33 to clamp the lid of the lead canister. , controlling the uncovering cylinder to pull back the uncovering device 33, and the lid of the lead can is moved up with the uncovering device 33 to achieve the uncovering The purpose of opening the lead can lid.
  • the control circuit controls the shifting cylinder 26 to push and pull the slider 32 along the double slide rail 31, firstly, the pin cylinder 28 on the slider 32 corresponds to the lead canister, and the control circuit controls the pin cylinder 28 to push the dispensing needle 34 downward.
  • the medicine dispensing needle 34 is inserted into the medicine bottle from the rubber cap of the medicine bottle.
  • the water of the water container 37 is flowed into the medicine through the inflow tube 36 and the dispensing needle 34.
  • the inside of the bottle is mixed with the liquid medicine in the medicine bottle, and then all of the medicine is inserted into the medicine cylinder 4 through the dispensing needle, the outflow tube 35, and the medicine feeding tube 12, and the needle cylinder 28 is controlled to pull the medicine medicine needle 34 back.
  • the indexing cylinder 26 is controlled to move the uncovering cylinder 27 to a position corresponding to the lead canister, and the uncovering cover gas 27 is pushed down to push the uncovering device 33 so that the lid of the lead can is covered with lead.
  • the control uncoverer 33 loosens the lid and then controls the uncoverer to rise to the home position.
  • a filtering device may be disposed on the conduit through which the outlet tube 35 communicates with the feeding tube 12.
  • the dispensing needle 34 includes a connecting member 39, a cover 40, a needle sleeve 41, a thick needle 42, a fine needle 43 and a tight cap 44.
  • the needle sleeve 41 is provided with a flow chamber 45, and the needle sleeve 41 is provided.
  • the lower portion is provided with a flow nozzle 46 communicating with the overflow chamber 45, and the thick cap 42 of the tight cap 44 threadedly connected to the overflow nozzle 46 is in communication with the overflow chamber 45.
  • the needle sleeve 41 is provided with a flow chamber 45 through the through-flow passage 47, the fine needle 43 passes through the overflow chamber 45, and passes through the thick needle 42.
  • the top of the overflow chamber 45 is sealed, and the connecting member 39 sequentially fixes the cover 40 and the needle sleeve 41 by screws. Together, the outlet pipe 35 and the inlet pipe 36 are sequentially passed through the connecting member 39 and the cover 40 to communicate with the fine needle 43 and the flow passage 47, respectively.
  • the dispensing needle 34 is thus worked out: the thick needle and the fine needle are inserted into the vial at the same position of the plastic bottle cap, and the water enters the vial through the inflow tube 36, the overflow passage 47, and the thick needle 42. The liquid medicine is mixed, and the liquid medicine in the medicine bottle is taken out through the fine needle 43 and the outflow tube.

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Basic Packing Technique (AREA)

Description

自动远距离核素分药仪 技术领域
本实用新型涉及一种分药器, 特别是一种用于分配核素药液的分 药装置。 技术背景
临床核医学是利用核素检查、 治疗疾病的学科, 随着我国核素治 疗技术的幵展和使用, 从业人员、 病员的放射防护问题更加突出, 它 影响着核素检查、 治疗的临床运用。 目前在临床医学科 131碘的检查 和治疗中, 因市面上尚缺防护好、操作方便的专门的分药具,使得 131 碘化钠药液的配制、 分发多系人手工在 "放射屏蔽箱" 内完成, 普遍 存在防护差、 易挥发、 近距离操作、 使用极不方便等缺点, 使病员及 从业人员受到大量不必要的核照射。 在 CN2490101Y 中公开了一种名 称为 "核素安全分药器" 的实用新型专利, 它一种设置于密闭的铅箱 内的贮药瓶和装有核素的铅罐通过带有单向阀的过流管彼此连通, - 端连通至贮药瓶底部的出药管的另一端伸出铅箱外, 铅箱外的鼓气计 通过带有可控单向阀的进气管与贮药瓶连通, 铅箱外的加压器通过进 气管和设置于支架上的溶剂瓶及进液管与铅罐连通。 它虽然克服了上 述的不足, 但存在着如下的缺点: 它还需要人手工近距离操作, 操作 者或多或少地受到一些不必要的核照射, 由于操作者必须穿笨重的防 护用具, 因此劳动强度高, 计量误差大, 工作效率低。
发明内容
本实用新型的目的就是提供一种结构简单、 操作简便、 发药准确 和防护性强的自动远距离核素分药仪。
本实用新型的目的是通过这样的技术方案实现的, 它包括有壳体 以及受控制电路控制的配药机构和分药机构, 其特征在于: 分药机构是在 支架支撑的铅封体内设置有药缸, 药缸内有活塞, 设置于活塞上的活塞杆 穿出药缸, 并通过轴向移动机构与步进电机连接, 与药缸内相通的过药通 道通过配药阀分别与出药管、 进药管连通。 本实用新型是这样工作的:在控制电路的控制下,启动步进电机, 通过轴向移动机构、 活塞杆把活塞往下拉, 药缸内形成负压, 使要分 配的药液依次从进药管、配药阀、过药通道进入药缸, 这是进药过程。 分药时, 控制电路控制步时电机, 通过轴向移动机构、 活塞杆把活塞 往上推, 先排完不必要的空气, 然后开时进行分药, 通过步进电机的 转动来推动活塞上移, 使药液通过过药通道、 配药阀、 出药管向病员 发药, 分药量的大小, 控制电路可通过步进电机进行随意调整。 本实 用新型的控制电路可以与微机连接, 在监视系统的配合下, 实现远距 离的自动控制, 因此操作十分简便, 完全避免了核照射, 降低了劳动 强度, 提高了工作效率。
由于采用了上述技术方案, 本实用新型具有结构紧凑合理、 操作 方便、 防护性强、 工作稳定可靠、 计量准确和工作效率高等优点, 它 可以进行远距离自动控制, 操作者在完全无核照射的环境下, 自动地 完成取药、 配药、 分药的全过程, 不仅使操作者的避免核照射, 而且 显著地提高了工作效率。
附图说明
本实用新型的附图说明如下:
图 1为本实用新型的结构示意图;
图 2为图 1中的 A- A剖视图;
图 3为配药阀的结构示意图;
图 4为配药针的结构示意图。
图中: 1.壳体; 2.支架; 3.铅封体; 4.药缸; 5.活塞; 6.活塞杆; 7.推动块; 8.步进电机; 9.过药通道; 10.配药阀; 11.出药管; 12. 进药管; 13.阀体; 14.上阀盖; 15.下阀盖; 16.上阀芯; 17.下阀芯; 18.上阀腔; 19.下阀腔; 20.过流通道; 21.出药通道; 22.进药通道; 23.圆状阀片; 24.防偏杆; 25:支承架; 26.换位气缸; 27.揭盖气缸; 28.插针气缸; 29.上支承板; 30.下支承板; 31.双滑轨; 32.滑块; 33.揭盖器; 34.配药针; 35.出流管; 36.迸流管; 37.盛水容器; 38. 定位挡块; 39.连接件; 40.封盖; 41.针套; 42.粗针; 43.细针; 44. 紧帽; 45.过流腔; 46.过流嘴; 47.过流通道 48.丝杆; 49.螺孔; 50.推动块; 51.防转导向杆。
(五)、 具体实施方式
下面结合附图和实施例对本实用新型作进一步说明- 如图 1、 2所示, 本实用新型包括有壳体 1以及受控制电路控制的配药 机构和分药机构, 其特征在于: 分药机构是在支架 2支撑的铅封体 3内设 置有药缸 4, 药缸 4内有活塞 5, 设置于活塞 5上的活塞杆 6穿出药缸 4, 并通过轴向移动机构与步进电机 8连接, 与药缸 4内相通的过药通道 9通 过配药阀 10分别与出药管 11、 进药管 12连通。
本实用新型是这样工作的: 在控制电路的控制下, 启动步进电机 8, 通过轴向移动机构、 活塞杆 6把活塞 5往下拉, 药缸 4 内形成负 压, 使要分配的药液依次从进药管 12、 配药阀 10、 过药通道 9进入 药缸 4, 这是进药过程。 分药时, 控制电路控制步时电机 8, 通过轴 向移动机构、 活塞杆 6把活塞 5往上推, 先排完不必要的空气, 然后 开时进行分药, 通过步进电机 8的转动来推动活塞 5上移, 使药液通 过过药通道 9、 配药阀 10、 出药管 11 向病员发药, 分药量的大小, 控制电路可通过步进电机 8进行随意调整。 本实用新型的控制电路可 以与微机连接, 在监视系统的配合下, 实现远距离的自动控制, 因此 操作十分简便, 完全避免了核照射, 降低了劳动强度, 提高了工作效
1 如图 1所示,轴向移动机构可以是由丝杆 48、推动块 7和支架 2构成, 活塞杆 6固接在推动块 Ί上, 推动块 7上的螺孔 49啮合在丝杆 48上, 丝 杆 48的两端部通过轴承与支架 2连接, 丝杆 48的一端与步进电机 8的转 动轴连接。 该轴向移动机构是这样工作的: 步进电机 8带动丝杆 48逆时针 或顺时针转动, 丝杆 48使推动块 7上移或下移, 从而通过活塞杆 6推动活 塞 5上移或下移。
如图 1所示, 为了防止推动块 7产生不必要的转动, 推动块 7可以设 置防转导向孔 50, 固于支架 2上的防转导向杆 51活动地穿过防转导向孔 50。 如图 3所示, 配药阀 10是由阀体 13、 上阀盖 14、 下阀盖 15、 上阀芯 16和下阀芯 17构成, 阀体 13内设置有由阀体 13、 上阀盖 14和下阀盖. 15 一起围成的上阀腔 18和下阀腔 19, 阀体 13中部设置有均与上阀腔 18、 下 阀腔 19连通的过流通道 20,上阀盖 14上设置有与上阀腔 18连通的出药通 道 21, 下阀盖 15上设置有与下阀腔 19连通的进药通道 22, 上阀腔 18和 下阀腔 19内均分别放有上阀芯 16和下阀芯 17, 上阀芯 16和下阀芯 17都 是由与过流孔相配合的圆状阀片 23和防偏杆 24构成, 防偏杆 24固于阀片 23上, 并与阀片 23垂直, 过流通道 20、 出药通道 21、 进药通道 22分别与 过药通道 9、 出药管 11和进药管 12连通。
配药阀是这样工作的: 药缸 4进药时, 药液通过进药管 12、 进药通道 22推动下阀芯, 使下阀腔的孔与下阀芯分开, 下阀腔处于开通状态, 在负 压的作用下, 上阀芯被向下推, 使其堵住上阀腔的孔, 上阀腔处于关闭状 态, 这时, 药液只能通过过流通道 20、 过药通道 9进入药缸。 药缸 4出药 时, 药液通过过药通道 9、 过流通道 20推动下阀芯堵住下阀腔的孔, 下阀 腔处于关闭状态, 药液只能推开上阀芯, 使上阀腔处于开通状态, 药液通 过出药通道 21、 出药管 11向外流出, 实现分药的目的。
如图 1、 2所示, 配药机构是包括有支承架 25、 换位气缸 26、 揭盖气 缸 27和插针气缸 28, 支承架 25上设置有上支承板 29和下支承板 30, 上 支承板 29上设置换位气缸 26和双滑轨 31,滑块 32轴向活动地限位在双滑 轨 31上, 滑块 32与换位气缸 26连接, 滑块 32上设置有揭盖气缸 27和插 针气缸 28, 揭盖气缸 27与揭盖器 33连接, 插针气缸 28与配药针 34连接, 配药针 34上的出流管 35与分药机构的进药管 12连通, 配药针 34上的进 流管 36与位于下支承板 30上的盛水容器 37连通, 下支承板 30上设置有 定位挡块 38。
配药机构是这样工作的: 将装有药瓶的铅罐放于支承板 30上, 并由定 位挡块 38定位, 药瓶内装有核素药液, 控制电路控制换位气缸 26推拉滑 块 32沿双滑轨 31移动, 先使滑块 32上的揭盖气缸 27与铅罐相对应, 控 制电路控制揭盖气缸向下推揭盖器 33, 再控制揭盖器 33夹紧铅罐的盖子, 控制揭盖气缸向上拉回揭盖器 33, 铅罐的盖子随揭盖器 33上移, 以达到揭 开铅罐盖子的目的。 随后, 控制电路控制换位气缸 26推拉滑块 32沿双滑 轨 31移动, 先使滑块 32上的插针气缸 28与铅罐相对应, 控制电路控制插 针气缸 28向下推配药针 34, 使配药针 34从药瓶的胶盖上插进药瓶内, 此 时, 在药缸 4的负压作用下, 使盛水容器 37的水经进流管 36、 配药针 34 流进药瓶内, 再与药瓶内的药液混合在一起, 然后经配药针、 出流管 35、 进药管 12—起全部进入药缸 4, 控制插针气缸 28将配药针 34拉回, 此时, 药瓶在配药针 34上, 控制换位气缸 26使揭盖气缸 27移动到与铅罐相对应 的位置, 控制揭盖气 27下推揭盖器 33, 使铅罐的盖子盖在铅罐上, 控制揭 盖器 33松幵盖子, 然后控制揭盖器上升至原位。 下次配药时, 拔下上次配 药时留在配药针上的药瓶, 换上新的铅罐, 然后再重复上述的操作即可。 该配药机构是与分药机构一起共同作用下完成配药的。 为了防止渣子进入 配药阀内, 影响配药阀的正常工作, 可以在出流管 35与进药管 12相通的 管道上设置过滤装置。
如图 4所示, 配药针 34是包括有连接件 39、 封盖 40、 针套 41、 粗针 42、 细针 43和紧帽 44, 针套 41内设置有过流腔 45, 针套 41下部设置有 与过流腔 45相通的过流嘴 46 ,与过流嘴 46呈螺紋连接的紧帽 44上固有与 过流腔 45相通的粗针 42, 针套 41 内设置有与过流腔 45相通的过流通道 47, 细针 43穿过过流腔 45, 并从粗针 42内穿出, 过流腔 45顶部密封, 连 接件 39通过螺钉依次将封盖 40、针套 41固连在一起, 出流管 35和进流管 36依次穿过连接件 39、 封盖 40分别与细针 43、 过流通道 47连通。 配药 针 34 是这样工作析: 将粗针、 细针一起在药瓶胶盖的同一位置处插 进药瓶内, 水经进流管 36、 过流通道 47、 粗针 42进入药瓶内与药液 混合, 药瓶内的药液经细针 43、 出流管 . 35被抽出。

Claims

权 利 要 求 书
1.一种自动远距离核素分药仪, 包括有壳体(1) 以及受控制电路控制 的配药机构和分药机构, 其特征在于: 分药机构是在支架(2)支撑的铅封 体(3) 内设置有药缸(4), 药缸(4) 内有活塞(5 ), 设置于活塞(5)上 的活塞杆(6)穿出药缸(4), 并通过轴向移动机构与步进电机(8)连接, 与药缸(4)内相通的过药通道(9)通过配药阀(10)分别与出药管(11 )、 进药管 (12) 连通。
2.如权利要求 1所述的自动远距离核素分药仪, 其特征在于: 轴向移 动机构是由丝杆 (48)、 推动块 (7) 和支架 (2) 构成, 活塞杆 (6) 固接 在推动块 (7) 上, 推动块 (7) 上的螺孔 (49) 啮合在丝杆 (48) 上, 丝 杆(48) 的两端部通过轴承与支架 (2)连接, 丝杆 (48) 的一端与步进电 机 (8) 的转动轴连接。
3.如权利要求 2所述的自动远距离核素分药仪, 其特征在于: 推动块 (7)设置防转导向孔(50), 固于支架(2)上的防转导向杆(51 )活动地 穿过防转导向孔 (50)。
4.如权利要求 1所述的自动远距离核素分药仪, 其特征在于: 配药阔 ( 10)是由阀体(13 )、上阀盖(14)、下阀盖(15)、上阀芯(16)和下阀 芯(17)构成, 阀体(13) 内设置有由阀体(13)、 上阀盖(14)和下阀盖 ( 15)一起围成的上阀腔(18)和下阀腔(19), 阀体(13 ) 中部设置有均 与上阀腔 (18)、 下阀腔 (19)连通的过流通道 (20), 上阀盖 (14) 上设 置有与上阀腔(18)连通的出药通道 (21 ), 下阀盖(15)上设置有与下阀 腔(19)连通的进药通道(22), 上阀腔(18)和下阀腔(19 ) 内均分别放 有上阀芯(16)和下阀芯(17), 上阀芯 (16)和下阀芯(17 )都是由与过 流孔相配合的圆状阀片 (23) 和防偏杆 (24) 构成, 防偏杆 (24) 固于阀 片 (23) 上, 并与阀片 (23) 垂直, 过流通道 (20)、 出药通道 (21 )、 进 药通道 (22) 分别与过药通道 (9)、 出药管 (11 ) 和迸药管 (12)连通。
5.如权利要求 1、 2、 3或 4所述的自动远距离核素分药仪, 其特征在 于: 配药机构是包括有支承架 (25)、 换位气缸 (26)、 揭盖气缸 (27) 和 插针气缸(28), 支承架(25)上设置有上支承板(29 )和下支承板(30), 上支承板(29)上设置换位气缸(26)和双滑轨(31 ), 滑块(32)轴向活 动地限位在双滑轨(31)上, 滑块(32)与换位气缸(26)连接, 滑块(32) 上设置有揭盖气缸(27)和插针气缸(28), 揭盖气缸(27)与揭盖器(33) 连接, 插针气缸(28)与配药针(34)连接, 配药针(34)上的出流管(35) 与分药机构的进药管 (12)连通, 配药针 (34) 上的进流管 (36) 与位于 下支承板 (30) 上的盛水容器 (37) 连通, 下支承板 (30) 上设置有定位 挡块 (38)。
6·如权利要求 5所述的自动远距离核素分药仪, 其特征在于: 配药针 ( 34) 是包括有连接件 (39)、 封盖 (40)、 针套 (41 )、 粗针 (42)、 细针 (43) 和紧帽 (44), 针套 (41 ) 内设置有过流腔 (45), 针套 (41 ) 下部 设置有与过流腔(45 )相通的过流嘴(46), 与过流嘴(46)呈螺紋连接的 紧帽 (44)上固有与过流腔(45)相通的粗针 (42), 针套(41 ) 内设置有 与过流腔 (45) 相通的过流通道 (47), 细针 (43) 穿过过流腔 (45), 并 从粗针 (42) 内穿出, 过流腔 (45) 顶部密封, 连接件 (39) 通过螺钉依 次将封盖(40)、 针套(41 ) 固连在一起, 出流管(35 )和进流管 (36 )依 次穿过连接件(39)、封盖(40)分别与细针(43)、 过流通道(47 )连通。
PCT/CN2006/000112 2005-02-06 2006-01-23 Distributeur automatique à distance pour nucléine WO2006081746A1 (fr)

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