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    • 1. 发明申请
    • SYSTEM FOR OPERATING AND CONTROLLING A PNEUMATICALLY DRIVEN VITRECTOMY PROBE
    • 用于操作和控制气动驱动的维修探头的系统
    • US20100145374A1
    • 2010-06-10
    • US12329872
    • 2008-12-08
    • James T. PerkinsBrian D. McCary
    • James T. PerkinsBrian D. McCary
    • A61F9/007A61B17/34
    • A61F9/00736
    • A pneumatically driven vitrectomy probe system includes a movable member disposed within a cylinder to define an enclosed pressure chamber, which has an inlet and an outlet. A pressure transducer senses the pressure level within the enclosed pressure chamber, and a valve communicates pressurized air to the inlet of the enclosed pressure chamber based on the pressure level. A displacement device coupled to the movable member extends and retracts the movable member within the enclosed pressure chamber, to respectively increase and decrease the pressure level of pressurized air communicated via the chamber outlet. The pressurized air is communicated to enclosed volume within a pneumatically activated vitrectomy probe, which includes a hollow inner cutting member disposed within the hollow outer member. Upon extension of the displacement member, the resulting increase in pressure level of the pressurized air in the enclosed volume acts against the biasing spring to move the hollow inner cutting member, to cut vitreous material extending within the hollow outer member.
    • 气动驱动的玻璃体切割探针系统包括设置在气缸内的可动构件,以限定具有入口和出口的封闭的压力室。 压力传感器感测封闭压力室内的压力水平,并且阀基于压力水平将加压空气连通到封闭压力室的入口。 联接到可动构件的位移装置使可动构件在封闭的压力室内延伸和缩回,以分别增加和减小经由腔室出口连通的加压空气的压力水平。 加压空气在气动活化的玻璃体切除术探针内连通到封闭体积,其包括设置在中空外部构件内的中空内切割构件。 在位移构件延伸时,所产生的加压空气在封闭容积中的压力水平的增加作用在偏置弹簧上,以移动中空内切割构件,以切割在中空外构件内延伸的玻璃质材料。
    • 5. 发明授权
    • Flow control system based on leakage
    • 基于泄漏的流量控制系统
    • US08162919B2
    • 2012-04-24
    • US12329863
    • 2008-12-08
    • Laurence J. CullJames T. PerkinsRuss Finlay
    • Laurence J. CullJames T. PerkinsRuss Finlay
    • A61M37/00
    • A61M1/0058A61F9/00745A61M1/0031A61M2205/3331A61M2205/502A61M2210/0612
    • An ophthalmic surgical system utilizes a needle through which fluid is aspirated from a surgical site, and a sleeve coaxially received over the needle to define a flow passage between the sleeve and needle through which fluid is communicated to the surgical site. The system further includes a container that provides an adjustable infusion pressure for urging the flow of irrigation fluid to the surgical site. An aspiration pump urges aspiration of fluid from the surgical site, and a sensor detects the rate of aspiration flow. A controller is configured to calculate an intraocular eye pressure based on the infusion pressure and a pressure drop due to a resistance to the flow rate, which flow includes the sensed flow rate and a predicted leakage selected from a look-up table based on a size of the needle, a size of a sleeve, and a size of an incision through which the needle and the sleeve are placed.
    • 眼科手术系统使用针,通过该针从外科手术部位吸出流体,并且套筒同轴地容纳在针上以限定套筒和针之间的流动通道,流体通过该通道与手术部位连通。 该系统还包括提供可调节的输注压力以将冲洗流体流向外科手术部位的容器。 抽吸泵促使来自手术部位的液体的抽吸,并且传感器检测吸气流速。 控制器被配置为基于输注压力和由于对流速的阻力而产生的压降来计算眼内眼压,所述流量包括感测的流量和基于尺寸的从查找表中选择的预测泄漏 针的尺寸,以及针和套筒放置的切口的尺寸。
    • 10. 发明授权
    • System for operating and controlling a pneumatically driven vitrectomy probe
    • 用于操作和控制气动玻璃体切割术探针的系统
    • US08328835B2
    • 2012-12-11
    • US12329872
    • 2008-12-08
    • James T. PerkinsBrian D. McCary
    • James T. PerkinsBrian D. McCary
    • A61B17/32
    • A61F9/00736
    • A pneumatically driven vitrectomy probe system includes a movable member disposed within a cylinder to define an enclosed pressure chamber, which has an inlet and an outlet. A pressure transducer senses the pressure level within the enclosed pressure chamber, and a valve communicates pressurized air to the inlet of the enclosed pressure chamber based on the pressure level. A displacement device coupled to the movable member extends and retracts the movable member within the enclosed pressure chamber, to respectively increase and decrease the pressure level of pressurized air communicated via the chamber outlet. The pressurized air is communicated to enclosed volume within a pneumatically activated vitrectomy probe, which includes a hollow inner cutting member disposed within the hollow outer member. Upon extension of the displacement member, the resulting increase in pressure level of the pressurized air in the enclosed volume acts against the biasing spring to move the hollow inner cutting member, to cut vitreous material extending within the hollow outer member.
    • 气动驱动的玻璃体切割探针系统包括设置在气缸内的可动构件,以限定具有入口和出口的封闭的压力室。 压力传感器感测封闭压力室内的压力水平,并且阀基于压力水平将加压空气连通到封闭压力室的入口。 联接到可动构件的位移装置使可动构件在封闭的压力室内延伸和缩回,以分别增加和减小经由腔室出口连通的加压空气的压力水平。 加压空气在气动活化的玻璃体切除术探针内连通到封闭体积,其包括设置在中空外部构件内的中空内切割构件。 在位移构件延伸时,所产生的加压空气在封闭容积中的压力水平的增加作用在偏置弹簧上,以移动中空内切割构件,以切割在中空外构件内延伸的玻璃质材料。