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    • 75. 发明授权
    • Thrombectomy method
    • 血栓切除术
    • US06558366B1
    • 2003-05-06
    • US08349665
    • 1994-12-05
    • William J. DraslerRobert G. DutcherMark L. JensonJoseph M. ThielenEmmanuil I. Protonotarios
    • William J. DraslerRobert G. DutcherMark L. JensonJoseph M. ThielenEmmanuil I. Protonotarios
    • A61M3100
    • A61B17/32037A61B17/3203
    • A method of and apparatus for removing a thrombus deposit from the cardiovascular system of a patient without the need to surgically access the location of the thrombus deposit via a cut-down or other surgical procedure. A catheter is inserted percutaneously into the patient at a convenient location either directly or over a previously positioned guide wire. The distal end of the catheter is advanced under fluoroscopy to the site of the thrombus deposit. A balloon is inflated to stabilize the position of the distal end of the catheter within the center of the vessel lumen. A flexible metal tube conveys an extremely high pressure stream of sterile saline solution to at least one jet at the distal end of the catheter. At least one jet positions the thrombus deposit for emulsification by at least one other jet. By directing the jets toward the orifice of the large evacuation lumen of the catheter, a stagnation pressure is induced which propels the emulsion proximally for disposal. The rate of proximal flow of effluent is metered to correspond with the distal flow of saline solution to ensure minimal local impact on the vasculature at the site of the thrombus deposit.
    • 一种用于从患者的心血管系统中去除血栓沉积物的方法和装置,而不需要通过切割或其它外科手术手术地进入血栓沉积物的位置。 在方便的位置,将导管经皮插入患者中,直接或超过预先定位的导丝。 导管的远端在荧光透视下前进到血栓沉积部位。 气囊膨胀以将导管的远端的位置稳定在血管内腔的中心内。 柔性金属管将非常高压的无菌盐水溶液流传送到导管远端处的至少一个射流。 至少一个喷射器通过至少一个其它喷射器将血栓沉积物定位成乳化。 通过将射流引导到导管的大抽空腔的孔口,引起停滞压力,其推动乳剂向近端处理。 流出物的近端流量计量以与盐溶液的远端流动相对应,以确保对血栓沉积部位的脉管系统的局部影响最小。
    • 76. 发明授权
    • Thrombectomy and tissue removal device
    • 血栓切除术和组织清除装置
    • US6096001A
    • 2000-08-01
    • US351616
    • 1994-12-08
    • William J. DraslerRobert G. DutcherMark L. JensonJoseph M. ThielenEmmanuil I. Protonotarios
    • William J. DraslerRobert G. DutcherMark L. JensonJoseph M. ThielenEmmanuil I. Protonotarios
    • A61B17/00A61B17/22A61B17/32A61M25/00A61B17/20
    • A61B17/32037A61B17/3203
    • A device for removing a thrombus or other tissue deposit from the cardiovascular system, natural or synthetic tubule or cavity found in the human body of a patient without the need to surgically access the location of the thrombus or other tissue deposit via a cut-down or other surgical procedure. A flexible metal or high pressure plastic tube conveys an extremely high pressure stream of sterile saline or other physiologic solution to at least one jet at the distal end of the catheter. At least one jet is directed at the opening of a large exhaust lumen or other target. The jet(s) is responsible for providing a localized negative pressure which entrains tissue into the jet from break-up of the debris. This jet(s) can also provide stagnation pressure in the exhaust lumen which drives the tissue or thrombotic debris out of the exhaust lumen. Operation of the device with tip pressure greater than 500 psi provides this device with the entrainment and exhaust characteristics which contribute to its effectiveness. The rate of exhaust of tissue debris is metered to ensure minimal local impact on the vasculature at the site of the thrombus deposit. A fluid metering means, such as a roller pump, controls the rate of exhaust such that it is in balance with the saline input or can be adjusted to be greater or less than the input. A positive displacement pump operating at steady or pulsatile flow provides the high pressure saline to the tip of the catheter.
    • 一种用于从心血管系统去除血栓或其他组织沉积物的装置,在患者的人体中发现的天然或合成的小管或腔,而不需要经由切口或外科手术来进入血栓或其他组织沉积物的位置 其他外科手术。 柔性金属或高压塑料管将非常高压的无菌盐水或其他生理溶液流输送到导管远端处的至少一个射流。 至少一个射流指向大排气腔或其他靶的开口。 喷气机负责提供局部的负压,其将组织夹带到喷射器中从碎片的分解中。 这种喷射器还可以在排气腔中提供停滞压力,其将组织或血栓形成的碎片驱动出排出管腔。 尖端压力大于500 psi的设备的操作为该设备提供了有助于其有效性的夹带和排气特性。 计量组织碎片的排气速率,以确保局部对血栓沉积部位脉管系统的局部影响最小。 诸如辊式泵的流体计量装置控制排气速率,使其与盐水输入平衡,或者可以将其调节为大于或小于输入。 以稳定或脉动流动运行的容积式泵向导管的尖端提供高压盐水。