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1.发明授权Method and apparatus for obtaining improved resolution from intraluminal ultrasound 有权从腔内超声获得改善分辨率的方法和装置
公开(公告)号：US6110121A
公开(公告)日：2000-08-29
申请号：US236936
申请日：1999-01-25
申请人： Jay Alan Lenker
发明人： Jay Alan Lenker
IPC分类号： A61B8/12
CPC分类号： A61B8/12 , A61B8/445 , A61B8/4461 , G01S15/894 , G01S15/8997
摘要： A rotationally vibrating imaging catheter and method of utilization has an array of ultrasound transducers and an actuator along with signal processing, display, and power subsystems. The actuator of the preferred embodiment is a solid state nitinol actuator. The actuator causes the array to oscillate such that the tip of the catheter may be rotated through an angle equal to or less than 360 degrees. The tip is then capable of rotating back the same amount. This action is repeated until the desired imaging information is acquired. The rotationally vibrating catheter produces more imaging points than a non-rotating imaging catheter and eliminates areas of missing information in the reconstructed image. Rotationally vibrating catheters offer higher image resolution than stationary array catheters and greater flexibility and lower costs than mechanically rotating imaging catheters.
摘要翻译： 旋转振动成像导管和利用方法具有超声波换能器阵列和致动器以及信号处理，显示和电源子系统。 优选实施方案的致动器是固态镍钛诺致动器。 执行器使阵列振荡，使得导管的尖端可旋转等于或小于360度的角度。 然后尖端能够旋转相同的量。 重复该动作，直到获取所需的成像信息。 旋转振动导管比非旋转成像导管产生更多的成像点，并消除重建图像中缺失信息的区域。 旋转振动导管提供比固定阵列导管更高的图像分辨率，并且具有比机械旋转成像导管更大的灵活性和更低的成本。
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公开(公告)号：US5752971A
公开(公告)日：1998-05-19
申请号：US461941
申请日：1995-06-05
CPC分类号： A61F2/958 , A61M25/1011 , A61M29/02 , A61F2002/30187 , A61F2002/9583 , A61F2230/0034 , A61M2025/0004 , A61M2025/1072
摘要： Disclosed is an apparatus and method for the treatment of the symptoms of obstructive prostatism. The apparatus includes an expandable dilation catheter and preferably an axially elongate sheath, adapted for transurethral insertion via the external opening of the urethra. The sheath is ellipsoid in cross-section, and provides an initial path through which the catheter and a standard cystoscope lens is guided. The dilation catheter or the sheath are provided with a non-radiological locating feature for positioning the dilation portion of the catheter with respect to an anatomical landmark. Once the catheter has been properly positioned with respect to both the bladder neck and the sphincter, the dilation balloon may be inflated to force open the affected prostatic urethra and eliminate the obstruction.
摘要翻译： 公开了一种治疗阻塞性前列腺症症状的装置和方法。 该装置包括可膨胀的扩张导管，优选地是轴向细长的护套，适于经由尿道的外部开口经尿道插入。 护套是椭圆形的横截面，并且提供了导管和标准的膀胱镜镜片被引导通过的初始路径。 扩张导管或护套设置有非放射性定位特征，用于相对于解剖学标记定位导管的扩张部分。 一旦导管已经相对于膀胱颈和括约肌适当地定位，则膨胀气球可以被充气以迫使打开受影响的前列腺尿道并消除阻塞。
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3.发明授权公开(公告)号：US06682499B2
公开(公告)日：2004-01-27
申请号：US09894564
申请日：2001-06-28
申请人： Jay Alan Lenker
发明人： Jay Alan Lenker
IPC分类号： A61M3700
CPC分类号： A61M1/3653 , A61M1/3613 , A61M1/3659 , A61M1/3664 , A61M2025/1013 , A61M2202/047
摘要： A system is disclosed for cannulating the vena cava of a patient during cardiopulmonary bypass procedures. Such cannulation is necessary for drainage of venous blood from the patient so that it may be oxygenated and pumped back to the patient to perfuse tissues during cardiac surgery and, more specifically, during periods of ischemic cardiac arrest or dysfunction. The device of the present invention not only provides venous drainage for cardiopulmonary bypass, but also performs the function of routing cardioplegic solution through the heart in the retrograde direction. Such cardioplegia provides protection to the heart during periods of ischemic cardiac arrest. This invention replaces a plurality of cannulae currently used for open-heart surgery, thus simplifying the surgical field and improving visibility of the heart.
摘要翻译： 公开了一种用于在体外循环手术期间插入患者的腔静脉的系统。 这种插管对于从患者排出静脉血是必要的，使得其可以被氧合并泵送回患者以在心脏手术期间更具体地灌注组织，更具体地，在缺血性心脏骤停或功能障碍期间。 本发明的装置不仅提供用于体外循环的静脉引流，而且还执行沿逆行方向通过心脏路由心脏停搏溶液的功能。 这种心脏停跳在缺血性心脏骤停期间为心脏提供保护。 本发明代替目前用于开心手术的多个套管，从而简化了手术领域并提高了心脏的可见度。
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4.发明授权公开(公告)号：US06592526B1
公开(公告)日：2003-07-15
申请号：US09690795
申请日：2000-10-17
申请人： Jay Alan Lenker
发明人： Jay Alan Lenker
IPC分类号： A61B812
CPC分类号： A61B8/12 , A61B8/445 , A61B8/4461
摘要： A rotationally vibrating imaging catheter and method of utilization has an array of ultrasound transducers and an actuator along with signal processing, display, and power subsystems. The actuator of the preferred embodiment is a solid-state nitinol actuator. The actuator causes the array to oscillate such that the tip of the catheter may be rotated through an angle equal to or less than 360 degrees. The tip is then capable of rotating back the same amount. This action is repeated until the desired imaging information is acquired. The rotationally vibrating catheter produces more imaging points than a non-rotating imaging catheter and eliminates areas of missing information in the reconstructed image. Rotationally vibrating catheters offer higher image resolution than stationary array catheters and greater flexibility and lower costs than mechanically rotating imaging catheters. The rotationally vibrating array carried on a catheter may also be vibrated or rocked forward and backward to allow for acquisition of three-dimensional information within a region around the transducer array. The addition of adjunctive therapies to the imaging catheter enhances the utility of the instrument. Examples of such therapies include atherectomy, stent placement, thrombectomy and irradiation.
摘要翻译： 旋转振动成像导管和利用方法具有超声波换能器阵列和致动器以及信号处理，显示和电源子系统。 优选实施例的致动器是固态镍钛诺致动器。 执行器使阵列振荡，使得导管的尖端可旋转等于或小于360度的角度。 然后尖端能够旋转相同的量。 重复该动作，直到获取所需的成像信息。 旋转振动导管产生比非旋转成像导管更多的成像点，并消除重建图像中缺失信息的区域。与静态阵列导管相比，旋转导管提供更高的图像分辨率，并且具有比机械旋转成像导管更大的灵活性和更低的成本。 在导管上承载的旋转振动阵列也可以向前和向后振动或摇动以允许在换能器阵列周围的区域内采集三维信息。向成像导管添加辅助疗法增强了仪器的效用。 这些疗法的实例包括粥样斑块切除术，支架放置，血栓切除术和照射。
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公开(公告)号：US5836951A
公开(公告)日：1998-11-17
申请号：US481126
申请日：1995-06-07
CPC分类号： A61F2/958 , A61M25/1011 , A61M29/02 , A61F2002/30187 , A61F2002/9583 , A61F2230/0034 , A61M2025/0004 , A61M2025/1072
摘要： Disclosed is an apparatus and method for the treatment of the symptoms of obstructive prostatism. The apparatus comprises an expandable dilation catheter and preferably an axially elongate sheath, adapted for transurethral insertion via the external opening of the urethra. The sheath is ellipsoid in cross-section, and provides an initial path through which the catheter and a standard cystoscope lens is guided. The dilation catheter or the sheath are provided with a non-radiological locating means for positioning the dilation portion of the catheter with respect to an anatomical landmark. Once the catheter has been properly positioned with respect to both the bladder neck and the sphincter, the dilation balloon may be inflated to force open the affected prostatic urethra and eliminate the obstruction.
摘要翻译： 公开了一种治疗阻塞性前列腺症症状的装置和方法。 该装置包括可膨胀的扩张导管，优选地是轴向细长的护套，适于经由尿道的外部开口经尿道插入。 护套是椭圆形的横截面，并且提供了导管和标准的膀胱镜镜片被引导通过的初始路径。 扩张导管或护套设置有非放射性定位装置，用于相对于解剖学标记定位导管的扩张部分。 一旦导管已经相对于膀胱颈和括约肌适当地定位，则膨胀气球可以被充气以迫使打开受影响的前列腺尿道并消除阻塞。
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公开(公告)号：US06746439B2
公开(公告)日：2004-06-08
申请号：US09838902
申请日：2001-04-19
申请人： Jay Alan Lenker
发明人： Jay Alan Lenker
IPC分类号： A61M3100
CPC分类号： A61M5/44 , A61M2205/3633 , A61M2205/366
摘要： Disclosure is provided for apparatus and methods to control the temperature of fluids being administered to patients. The apparatus consists of an I.V. reservoir, fluid administration or I.V. tubing, an in-line heater, a heater controller, a temperature sensor located near the patient and feedback circuit connecting the temperature sensor to the heater controller. A method is disclosed which provides for overheating of the fluid so that it cools down to the desired temperature (usually body temperature) by the time it reaches the patient. In another embodiment, apparatus is disclosed for providing distributed heat to fluids being administered to patients. This apparatus includes heating channels or elements running along a length of the fluid administration tubing. These heating elements are controlled by a controller, which is attached to a temperature sensor, preferably located near the patient. The key advantages of this system include low cost, ease of use and reduced overheating of fluids prior to delivery to the patient. Such overheating could result in degradation of the fluids being delivered to the patient.
摘要翻译： 提供了用于控制向患者施用的流体的温度的装置和方法的公开。 该装置由I.V. 储层，流体给药或I.V. 管道，线内加热器，加热器控制器，位于患者附近的温度传感器和将温度传感器连接到加热器控制器的反馈电路。 公开了一种方法，其提供流体的过热，使得其在到达患者体内时冷却至所需温度（通常为体温）。在另一个实施例中，公开了用于向施用于患者的流体提供分布式热量的装置 。 该装置包括加热通道或沿流体供给管的长度延伸的元件。 这些加热元件由控制器控制，该控制器附接到优选位于病人附近的温度传感器。 该系统的主要优点包括低成本，易于使用，并在输送给患者之前减少流体过热。 这种过热可能导致被递送给患者的流体的降解。
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