CN101317799B - Vitreous body cutting machine for ophthalmology - Google Patents

Vitreous body cutting machine for ophthalmology Download PDF

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Publication number
CN101317799B
CN101317799B CN 200710023310 CN200710023310A CN101317799B CN 101317799 B CN101317799 B CN 101317799B CN 200710023310 CN200710023310 CN 200710023310 CN 200710023310 A CN200710023310 A CN 200710023310A CN 101317799 B CN101317799 B CN 101317799B
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gas
vitreous
cutter
circuit
ophthalmological
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CN 200710023310
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CN101317799A (en )
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万福凯
孙仁镇
张建春
杨晓华
黄渭涛
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苏州六六视觉科技股份有限公司
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Abstract

The invention discloses an ophthalmological vitreous cutter. External compressed air or nitrogen adopted by the cutter goes through a pressure reducing valve (11) and a magnetic valve (12) sequentially. A gas source is divided into a negative pressure gas circuit, a pumping/liquor drainage gas circuit, an incision gas circuit and a scissor gas circuit by a flow divider. The cutter also comprises an air pump (71), an air storage tank (72) and a gas-liquid pressure relief output interface (73) which are sequentially connected to produce a positive air flow required by the exchange of gas and liquid. The ophthalmological vitreous cutter can meet all the strict requirements of a vitreous cutting operation and has low price, thus greatly lowering the cost of surgery. So the ophthalmological vitreous cutter can promote the popularization of the ophthalmological vitreous operation.

Description

眼科用玻璃体切割机 Ophthalmic vitrectomy machine

技术领域 FIELD

[0001] 本发明属于一种医疗设备仪器,尤其涉及一种眼科用玻璃体切割机。 [0001] The present invention pertains to a medical equipment and instruments, particularly to a cutting machine with an ophthalmic glass. 背景技术 Background technique

[0002] 眼科用玻璃体切割机是一种用于开展眼科玻璃体部位手术的仪器。 [0002] The ophthalmic vitrectomy machine is carried out for a portion of an ophthalmic surgical instrument vitreous. 能用于玻璃体病变组织的切割、松解、移除、止血,维持手术过程中眼内压的平衡,并提供手术所需的眼内照明光源。 It can be used to cut vitreous tissue, release, remove, to stop bleeding, to maintain balance during surgery intraocular pressure, and to provide the required illumination sources intraocular surgery.

[0003] 一般认为,在眼球的玻璃体部位开展手术是高难度的,因而对相关的手术仪器的功能和性能有着其特定的要求:①仪器能产生用于推动切割管路的正压气流序列,根据手术中切割术式的要求,其频率、脉冲宽度、幅度是可控的。 [0003] is generally considered to carry out the surgical site in the vitreous of the eye is difficult, and thus has its specific requirements for performance and functionality associated surgical instrument: ① the instrument can produce positive airflow sequences for pushing the cutting line, the surgical cutting surgical requirements, the frequency, pulse width, amplitude is controllable. ②仪器能产生用于推动剪刀管路的正压气流,根据手术中松解术式的要求,其正压气流的大小可以是恒定的或可调大小的。 ② instrument capable of generating positive airflow conduit for urging scissors, surgical lysis of the formula in claim, the size of its positive airflow can be constant or adjustable size. ③仪器能产生用于抽吸移除眼内病变组织的负压,根据手术的要求,其负压值的大小是可控并且是稳定的。 ③ The instrument can generate a negative pressure for suction removal of diseased tissue within the eye, according to the requirements of the surgery, the size of which is controllable negative pressure and is stable. ④仪器能产生一稳定的正压气,用于维持手术过程中眼内压力平衡并用于气液交换术式。 ④ instrument capable of generating a stable gas pressure, for maintaining the pressure within the eye during surgery and balanced formula for gas-liquid exchange operation.

[0004] 由于上述多种复杂要求,目前市场上的眼科用玻璃体切割机大都结构复杂、价格昂贵,这使得病人的手术费用居高不下,限制了眼科玻璃体手术的普及。 [0004] Since the above-described variety of complex requirements, currently on the market with an ophthalmic vitrectomy machine most complicated structure, expensive, which makes the high cost of surgery patients, the popularization limits ophthalmic vitrectomy.

发明内容 SUMMARY

[0005] 本发明的目的是:提供一种眼科用玻璃体切割机,能满足玻璃体切割手术的各项严格要求,并且价格低,适合推广;能大幅降低手术费用,以推动普及眼科玻璃体手术。 Objective [0005] The present invention is: to provide an ophthalmic vitrectomy machine, vitrectomy can meet the stringent requirements, and low price, suitable for promotion; can significantly reduce the cost of surgery, in order to promote the popularization of ophthalmic vitrectomy.

[0006] 本发明的技术方案是:一种眼科用玻璃体切割机,其特征在于:该切割机采用外部的压缩空气或氮气依次通过减压阀、电磁阀,由分流器单元将气源分为负压气路、抽/排液气路、切割气路和剪刀气路四路气路, [0006] aspect of the present invention is: A vitreous cutter ophthalmic use, characterized in that: the external cutter of compressed air or nitrogen passes through the pressure reducing valve, electromagnetic valve, air supply means divided by the splitter manifold vacuum, suction / discharge air passage, the air passage and scissors cutting four gas manifold passage,

[0007] 所述负压气路通过依次连接的电一气比例阀、流量调节阀、抽吸文丘里泵、抽吸电磁阀产生所需的负压,所述抽吸电磁阀依次连接储液盒、第一压管阀、排液盒、第二压管阀、机外集液袋; The [0007] air passage by a negative pressure valve is electrically connected in turn stretch proportional flow regulating valve, a suction venturi pump, the suction solenoid valve to produce the desired negative pressure, the suction solenoid valve sequentially connected to the accumulator box The first pinch valve, a liquid discharge cartridge, the second pinch valve, fluid collection bags outside the machine;

[0008] 所述抽/排液气路通过依次连接的抽排减压阀、抽排电磁阀、抽排文丘里泵形成抽/排液所需的负压气流序列,所述抽排文丘里泵连接排液盒; [0008] The suction / discharge passage by pumping air pressure reducing valve connected in sequence, solenoid valves pumping, pumping the venturi pump air flow sequences required negative pressure suction / discharge, the venturi pumping drain pump connection box;

[0009] 所述切割气路通过切割电磁阀形成切割正压气流序列,所述切割电磁阀依次连接气动切割/抽吸手柄、第三压管阀、储液盒,所述负压气路与切割气路协同工作; [0009] The cutting gas passage is formed by cutting sequence cleavage positive airflow solenoid valve, the solenoid valve in turn connected to a pneumatic cutting cutter / aspiration handle, the third pinch valve, the reservoir cartridge, and the negative-pressure gas passage cutting gas passage work together;

[0010] 所述剪刀气路通过依次连接的剪刀流量调节阀、节流阀形成正压气流序列,所述节流阀连接气动剪刀手柄。 [0010] The air passage through the shears scissors flow control valve connected in sequence, a positive pressure air flow throttle valve sequence, the throttle valve connected to the pneumatic scissors handle.

[0011 ] 下面对上述技术方案进行进一步解释: [0011] Next, the foregoing technical solution further explained:

[0012] 1.所述切割机还包括有通过依次连接的气泵、储气罐、气液交换压力输出接口,以产生气液交换所需的正压气流。 [0012] The cutting machine 1 further comprises a pump connected in turn by a gas tank, an output interface pressure gas-liquid exchange, a positive pressure air flow to produce the desired gas-liquid exchange.

[0013] 2.所述分流器单元包括依次连接的第一分流器、第二分流器、减压阀、第三分流器,所述第一分流器处于电磁阀与电一气比例阀之间,所述第二分流器连接抽排减压阀,所述第三分流器分别连接剪刀流量调节阀、切割电磁阀。 [0013] 2. The splitter unit comprises a first shunt connected in sequence, a second shunt valve, a third diverter, said diverter located between the first solenoid valve and the proportional valve electrically stretch, pumping said second pressure relief valve connected in shunt, the shunt are connected to the third flow rate adjusting valves scissors, cut solenoid valve.

[0014] 本发明的优点是: [0014] The advantage of the present invention are:

[0015] 1.本发明的眼科用玻璃体切割机,能满足玻璃体切割手术的各项严格要求,并且价格低,适合推广。 The ophthalmic [0015] 1. The present invention vitrectomy machine, to meet the strict vitrectomy requirements, and low cost, suitable for promotion.

[0016] 2.使用本发明的眼科用玻璃体切割机,能大幅降低手术费用,以推动普及眼科玻璃体手术。 [0016] 2. The present invention is an ophthalmic vitrectomy machine, can significantly reduce the cost of surgery, in order to promote the popularity of an ophthalmic vitrectomy.

[0017] 3.本发明的眼科用玻璃体切割机,最高可达2500次/分的切割速率,最大程度上减小了切割时对周边正常组织的牵拉,适宜近眼底部位的手术。 The ophthalmic [0017] 3. The present invention vitrectomy machine, up to 2500 times / min of cutting rate, reducing the pull on the surrounding normal tissue while cutting the maximum extent, suitably near the surgical site of the fundus.

[0018] 4.本发明的眼科用玻璃体切割机,气流/液流控制系统采用了多传感器实时气一电闭环控制技术,抽吸用负压由文丘里泵产生,具有快的负压响应速度和高的负压稳定性。 The ophthalmic [0018] 4. The present invention vitrectomy machines, air / flow control system uses a multi-gas sensor in real time closed loop power control technique, the suction produced by the venturi pump with a negative pressure, a negative pressure having a fast response speed and a high negative pressure stability. 负压的压力值是可设置的,并可通过脚控开关对负压进行实时的线性变化控制,能很好地控制手术中抽吸量的大小。 Negative pressure value is settable, and real-time control of the linear variation of the negative pressure by the foot switch, can well control the size of the amount drawn surgery. 切割、剪刀所需的正压气流序列的频率、脉冲宽度、幅度是可以精细控制的,以满足手术过程中不同切割量和剪断方式的要求。 Cutting, positive airflow frequency scissors desired sequence, pulse width, amplitude can be carefully controlled to meet the requirements of different surgical procedures and the cutting amount of shear mode.

[0019] 5.本发明的眼科用玻璃体切割机,气体/液体交换功能所需的正压力由机内的专用气泵产生的,采用了传感器实时气一电闭环控制技术,是精细可控的。 The ophthalmic [0019] The present invention vitrectomy machine, gas / liquid exchange function of generating a positive pressure required by a dedicated pump in the machine, using a gas sensor in real time closed loop power control technique, is finely controllable. 能很好地维持手术过程中的眼内压力并完成眼内气体/液体交换。 Well maintain the pressure within the eye during surgery and complete the intraocular gas / liquid exchange.

[0020] 6.本发明的眼科用玻璃体切割机,采用Windows操作系统、触摸屏人机界面、嵌入式单片机技术。 The ophthalmic [0020] 6. The present invention vitrectomy machine, using the Windows operating system, a touch screen interface, embedded chip technology. 和与整机的主控制系统采用了嵌入式技术(基于windows)和分布式单片机技术。 And a main control system of the machine uses the embedded technology (Windows-based) and distributed microcontroller technology. 采用了专业的传感器、气动部件、文丘里泵和独特的信号采样调理电路,对正负压气液流管路系统的协同精确控制,获得了精细的用于推动切割器械或剪刀器械的正压气流序列(频率、脉宽、幅度)和平稳、可控的用于抽吸的负压。 Using specialized sensors, pneumatic means, the venturi pump and a unique signal sample conditioning circuit, precise control of positive and negative synergy liquid flow pipe system, the obtained fine positive airflow for pushing the cutting instrument or scissors instrument sequence (frequency, pulse width, amplitude) and smooth, controllable negative pressure for pumping. 非接触式液位控制和气动式排液装置。 Non-contact type liquid level control and pneumatic discharge device. 隔离式高频电路产生双极电凝器械所需的高频电能。 Isolated high frequency circuit generates a high frequency electric power required for bipolar coagulation instrument. 可保持色温不变的亮度调节 Color temperature can be kept constant brightness adjustment

直ο Straight ο

[0021] 附图说明 [0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] 下面结合附图和实施例对本发明作进一步的描述: Drawings and embodiments of the present invention will be further described [0022] below with:

[0023] 图1为本发明的气路结构示意图; [0023] FIG gas path 1 a schematic structure of the present invention;

[0024] 图2为本发明的电原理框图; [0024] FIG. 2 is an electrical block diagram of the present invention;

[0025] 图3为本发明的电路控制示意图; [0025] Fig 3 a schematic view of a control circuit of the present invention;

[0026] 图4为本发明的工作流程图。 [0026] FIG 4 is a flowchart of the present invention.

[0027] 其中:11减压阀;12电磁阀;21电-气比例阀;22流量调节阀;23抽吸文丘里泵; 24抽吸电磁阀;31抽排减压阀;32抽排电磁阀;33抽排文丘里泵;41切割电磁阀;42气动切割/抽吸手柄;51剪刀流量调节阀;52节流阀;53气动剪刀手柄;61储液盒;62第一压管阀;63排液盒;64第二压管阀;65机外集液袋;66第三压管阀;71气泵;72储气罐;73气液交换压力输出接口;81第一分流器;82第二分流器;83减压阀;84第三分流器。 [0027] wherein: the pressure reducing valve 11; solenoid valve 12; 21 - The gas proportional valve; flow regulating valve 22; 23 a suction venturi pump; a suction solenoid valve 24; pumping pressure reducing valve 31; 32 Electromagnetic pumping valve; venturi pump 33 pumping; cut solenoid valve 41; 42 pneumatic cutter / aspiration handle; scissors flow regulating valve 51; the throttle valve 52; 53 pneumatic scissors handle; reservoir cartridge 61; 62 of the first pinch valve; drainage box 63; 64 of the second pinch valve; an outer liquid collecting bags machine 65; 66 of the third pinch valve; pump 71; 72 cylinders; liquid exchange pressure output interface 73; a first splitter 81; the first 82 two splitter; reducing valve 83; a third diverter 84.

[0028] 具体实施方式 [0028] DETAILED DESCRIPTION

[0029] 实施例:如图1所示,一种眼科用玻璃体切割机,该切割机采用外部的压缩空气或氮气依次通过减压阀11、电磁阀12,由分流器单元将气源分为负压气路、抽/排液气路、切割气路和剪刀气路四路气路。 [0029] Example: 1 An ophthalmic vitreous cutter, the cutting machine external compressed air or nitrogen passes through the pressure reducing valve 11, the solenoid valve 12, the air supply unit into a splitter manifold vacuum, suction / discharge air passage, the air passage and scissors cutting four gas manifold passage. [0030] 负压气路通过依次连接的电-气比例阀21、流量调节阀22、抽吸文丘里泵23、抽吸电磁阀M产生所需的负压。 [0030] The negative-pressure passage via the gas electrically connected sequentially - the gas proportional valve 21, flow regulating valve 22, a suction venturi pump 23, the suction solenoid valve M to produce the desired negative pressure. 抽吸电磁阀M依次连接储液盒61、第一压管阀62、排液盒63、第二压管阀64、机外集液袋65。 M suction solenoid valve sequentially connected to the accumulator box 61, the first pinch valve 62, the drainage box 63, the second pinch valve 64, fluid collection bags 65 outside the machine.

[0031] 抽/排液气路通过依次连接的抽排减压阀31、抽排电磁阀32、抽排文丘里泵33 形成抽/排液所需的负压气流序列。 [0031] The suction / discharge passage by pumping air relief valve 31 are connected in sequence, solenoid valve 32 pumping, pumping venturi pump 33 form a negative pressure stream sequences required for pumping / drainage. 抽排文丘里泵33连接排液盒63 ; Drainage venturi pump 33 is connected to the drain box 63;

[0032] 切割气路通过切割电磁阀41形成切割正压气流序列。 [0032] The cutting gas passage is formed by cutting the solenoid valve 41 cleavage sequences positive airflow. 切割电磁阀41依次连接气动切割/抽吸手柄42、第三压管阀66、储液盒61。 Cutting sequentially connected to a pneumatic solenoid valve 41 cutting / aspiration handle 42, the third pinch valve 66, the reservoir 61 cartridge.

[0033] 切割时,负压气路与切割气路协同工作。 [0033] cutting, suction air passage and the gas passage cutting work together.

[0034] 剪刀气路通过依次连接的剪刀流量调节阀51、节流阀52形成正压气流序列,节流阀52连接气动剪刀手柄53。 [0034] Scissors Scissors are sequentially connected by a gas passage of the flow regulating valve 51, a throttle 52 is formed a positive pressure gas stream sequence, the throttle valve 52 is connected to a pneumatic scissors handle 53.

[0035] 本眼科用玻璃体切割机还包括有通过依次连接的气泵71、储气罐72、气液交换压力输出接口73,以产生气液交换所需的正压气流。 [0035] The present ophthalmic vitrectomy machine further comprises a pump 71 in turn connected by a gas tank 72, gas-liquid exchange pressure output interface 73, a positive pressure air flow to produce the desired gas-liquid exchange.

[0036] 分流器单元包括依次连接的第一分流器81、第二分流器82、减压阀83、第三分流器84。 [0036] The splitter unit comprises a first diverter 81 connected in sequence, a second diverter 82, a pressure reducing valve 83, a third diverter 84. 第一分流器81处于电磁阀12与电-气比例阀21之间;第二分流器82连接抽排减压阀31 ;第三分流器84分别连接剪刀流量调节阀51、切割电磁阀41。 A first diverter valve 12 and the solenoid 81 is electrically - between the gas proportional valve 21; a second splitter 82 is connected pumping pressure reducing valve 31; 84 are respectively connected to a third splitter shears flow rate adjusting valve 51, the solenoid valve 41 is cut.

[0037] 如图2、图3、图4所示,通过触摸屏人机界面设置工作参数,由嵌入式工控机传送至各单片机,在脚控开关不同状态的协同控制下,由单片机控制相应的功能电路模块,驱动相应的气动元件,获得所需的正压或负压气流序列,或者启动高频电能输出。 [0037] 2, 3, 4, the man-machine interface is provided by a touch screen working parameters transmitted from the MCU to each of the embedded computer, under cooperative control Footswitch different states, controlled by a respective microcontroller the functional circuit modules, drives a corresponding pneumatic components, to obtain a desired positive or negative pressure air stream sequence, start frequency or power output. 同时,在多个传感器实时气-电闭环回路控制下,将机器的实际工作状态实时地采样至单片机进行控制,同时单片机将机器的实际工作状态实时地传送至触摸屏人机界面。 Meanwhile, a plurality of gas sensors in real time - the closed-loop power control, the actual working state of the machine in real time to the MCU control sample, while the actual operating state of the microcontroller is transmitted in real time to machine the touch screen interface.

[0038] 非接触式液位探测电路监测手术储液盒61的液位,在预定的位置时,将停止切割抽吸操作,把液体送至排液盒63,当储液盒61的液位下降至一定位置时,即自动恢复切割抽吸操作。 [0038] The contactless liquid level detection circuit monitors the level of surgical cartridge reservoir 61, at a predetermined position, the cutting will stop sucking operation, the liquid to the liquid discharging cartridge 63, the cartridge 61 when the liquid level in the reservoir down to a predetermined position, automatically cutting the recovery sucking operation.

[0039] 本发明的眼科用玻璃体切割机,气流/液流控制系统采用了多传感器实时气-电闭环控制技术,抽吸用负压由文丘里泵产生,具有快的负压响应速度和高的负压稳定性。 [0039] The present invention is an ophthalmic vitrectomy machines, air / flow control system uses a real-time multi-sensor gas - loop power control, the suction produced by negative pressure venturi pump, has a fast response speed and high vacuum stability of negative pressure. 负压的压力值是可设置的,并可通过脚控开关对负压进行实时的线性变化控制,能很好地控制手术中抽吸量的大小。 Negative pressure value is settable, and real-time control of the linear variation of the negative pressure by the foot switch, can well control the size of the amount drawn surgery. 切割、剪刀所需的正压气流序列的频率、脉冲宽度、幅度是可以精细控制的,以满足手术过程中不同切割量和剪断方式的要求。 Cutting, positive airflow frequency scissors desired sequence, pulse width, amplitude can be carefully controlled to meet the requirements of different surgical procedures and the cutting amount of shear mode.

[0040] 本发明的眼科用玻璃体切割机,气体/液体交换功能所需的正压力由机内的专用气泵产生的,采用了传感器实时气-电闭环控制技术,是精细可控的。 The ophthalmic [0040] The present invention vitrectomy machine, gas / liquid exchange function of generating a positive pressure required by a dedicated pump in the machine, using a gas sensor in real time - the electrical closed loop control technology, is finely controllable. 能很好地维持手术过程中的眼内压力并完成眼内气体/液体交换。 Well maintain the pressure within the eye during surgery and complete the intraocular gas / liquid exchange.

[0041] 本发明的眼科用玻璃体切割机,采用了隔离式高频电路产生双极电凝器械所需的高频电能,用于眼内止血,满足GB9706. 1与GB9706. 4的相关规定。 The ophthalmic [0041] The present invention vitrectomy machine, using a high frequency power to generate the desired bipolar coagulation instrument isolated high-frequency circuit, to stop bleeding in the eye, to meet regulations GB9706. 1 and GB9706. 4 in. 采用了非接触式液位探测系统,满足GB9706. 1的相关规定。 Using a non-contact type liquid level detection system, to meet regulations GB9706. 1 in. 采用了防浸型全功能脚控开关。 Using full-featured anti dip footswitches.

[0042] 用于眼内照明的光源采用电动光阑式调光机构,在亮度变化时可维持色温不变。 [0042] a light source for illuminating the eye of the diaphragm with electric dimming means when a luminance change the color temperature can be maintained unchanged.

[0043] 本眼科用玻璃体切割机可与国际上标准的手术器械配合使用。 [0043] The present ophthalmic cutting machine with the international standard used in conjunction with a surgical instrument vitreous. 标准配置采用气动式高速切割抽吸手柄,气动式剪刀手柄,双极电凝手柄和眼内光导纤维。 Standard the pneumatic suction handle high-speed cutting, pneumatic scissors handle, the handle bipolar coagulation and intraocular optical fiber.

[0044] 当然,本发明的眼科用玻璃体切割机还可具有多种变换及改型,并不局限于上述实施方式的具体结构。 [0044] Of course, the present invention is an ophthalmic vitrectomy machine may have various changes and modifications, specific configuration is not limited to the above embodiments. 总之,本发明的保护范围应包括那些对于本领域普通技术人员来说显而易见的变换或替代以及改型。 In summary, the scope of the present invention include those of ordinary skill in the art for this apparent conversion or substitutions and modifications.

Claims (3)

  1. 1. 一种眼科用玻璃体切割机,其特征在于:该切割机采用外部的压缩空气或氮气依次通过第一减压阀(11)、电磁阀(12),由分流器单元将气源分为负压气路、抽/排液气路、切割气路和剪刀气路四路气路,所述负压气路通过依次连接的电-气比例阀(21)、流量调节阀(22)、抽吸文丘里泵(23)、抽吸电磁阀04)产生所需的负压,所述抽吸电磁阀04)依次连接储液盒(61)、第一压管阀(62)、排液盒(63)、第二压管阀(64)、机外集液袋(65);所述抽/排液气路通过依次连接的抽排减压阀(31)、抽排电磁阀(32)、抽排文丘里泵(33)形成抽/排液所需的负压气流序列,所述抽排文丘里泵(3¾连接排液盒;所述切割气路通过切割电磁阀Gl)形成切割正压气流序列,所述切割电磁阀Gl)依次连接气动切割/抽吸手柄G2)、第三压管阀(66)、储液盒(61),所述负压气路与切割气路协同工 An ophthalmic vitrectomy machine, characterized in that: the external cutter of compressed air or nitrogen passes through the first pressure reducing valve (11), the solenoid valve (12), the air supply unit into a splitter manifold vacuum, suction / discharge air passage, the air passage and scissors cutting four gas manifold passage, said negative pressure through the air passage electrically connected sequentially - gas proportional valve (21), the flow regulating valve (22), a suction venturi pump (23), a suction solenoid valve 04) to produce the desired negative pressure, the suction solenoid valve 04) are sequentially connected to a reservoir cartridge (61), a first pressure valve (62), drain box (63), a second pinch valve (64), fluid collection bags outside the machine (65); a suction / discharge passage by pumping air relief valve (31) are sequentially connected, pumping solenoid valve (32 ), pumping venturi pump (33) pumping a negative pressure gas flow sequence / drain desired, the venturi pump pumping (3¾ drain connection box; cutting the cutting gas passage is formed by cutting a solenoid valve of Gl) positive airflow sequence, the cleavage of Gl solenoid valve) pneumatically connected sequentially cutting / suction grip G2), the third pinch valve (66), a reservoir cartridge (61), said suction air passage and the synergistic cutting gas passage work 作;所述剪刀气路通过依次连接的剪刀流量调节阀(51)、节流阀(5¾形成正压气流序列, 所述节流阀(5¾连接气动剪刀手柄(53)。 For; the air passage through the shears scissors connected in turn flow rate adjusting valve (51), a throttle (5¾ a positive pressure gas stream sequence, the throttle valve (5¾ pneumatic scissors connection handle (53).
  2. 2.根据权利要求1所述的眼科用玻璃体切割机,其特征在于:所述切割机还包括有通过依次连接的气泵(71)、储气罐(72)、气液交换压力输出接口(73),以产生气液交换所需的正压气流。 2. The ophthalmic according to claim 1 with a vitreous cutter, wherein: said cutter further comprises a pump (71), tank (72) are sequentially connected through an output interface pressure gas-liquid exchange (73 ), to produce the desired gas-liquid exchange positive airflow.
  3. 3.根据权利要求1或2所述的眼科用玻璃体切割机,其特征在于:所述分流器单元包括依次连接的第一分流器(81)、第二分流器(8¾、第二减压阀(8¾、第三分流器(84),所述第一分流器(81)处于电磁阀(12)与电-气比例阀之间;所述第二分流器(82)连接抽排减压阀(31);所述第三分流器(84)分别连接剪刀流量调节阀(51)、切割电磁阀(41)。 The ophthalmic claim 12 or claim vitreous cutter, wherein: said diverter means comprises a first diverter (81) connected in sequence, a second splitter (8¾, a second pressure relief valve (8¾, the third shunt (84), said first diverter (81) is a solenoid valve (12) and electrically - between the gas proportional valve; a second divider (82) connected to pumping pressure relief valve (31); said third divider (84) are connected to scissors flow rate adjusting valve (51), cutting the solenoid valve (41).
CN 200710023310 2007-06-05 2007-06-05 Vitreous body cutting machine for ophthalmology CN101317799B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790816A (en) 1985-09-26 1988-12-13 Allon Laboratories, Inc. Surgical cassette proximity sensing and latching apparatus
US5417246A (en) 1989-10-27 1995-05-23 American Cyanamid Company Pneumatic controls for ophthalmic surgical system
CN2320228Y (en) 1997-11-17 1999-05-26 高亚林 Hand anterior chamber injection aspirator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790816A (en) 1985-09-26 1988-12-13 Allon Laboratories, Inc. Surgical cassette proximity sensing and latching apparatus
US5417246A (en) 1989-10-27 1995-05-23 American Cyanamid Company Pneumatic controls for ophthalmic surgical system
CN2320228Y (en) 1997-11-17 1999-05-26 高亚林 Hand anterior chamber injection aspirator

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