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    • 61. 发明授权
    • Stent graft loading and deployment device and method
    • 支架移植装载和部署装置及方法
    • US06878161B2
    • 2005-04-12
    • US10133154
    • 2002-04-25
    • Jay A. Lenker
    • Jay A. Lenker
    • A61F2/90A61F2/06
    • A61F2/90A61F2/07A61F2/844A61F2/89A61F2002/075A61F2002/9511A61F2220/005A61F2220/0066A61F2220/0075A61F2230/0054A61F2230/0067
    • An endoluminal prosthesis includes a tubular graft, an expandable annular support structure and a restraining mechanism restraining the prosthesis in a collapsed configuration in which the annular support structure is compressed to a low profile. The restraining mechanism holds the annular support structures in the collapsed configuration until the prosthesis is positioned for deployment. The restraining mechanism is then released to allow the annular support structures to expand into conforming engagement with the inner wall of a lumen in which the prosthesis is to be deployed. A feature according to the invention provides a balloon catheter onto which the prosthesis is loaded for deployment where the balloon is expanded to provide a radial force to release the restraining mechanism. Another feature provides for a restraining member that breaks upon application of the radial force to release the annular support structure from its constrained configuration. Another feature of the invention provides for independent and/or sequential release of the annular support members. Various types of annular support members attached to tubular grafts in a variety of manners may be used in accordance with the invention. The invention may be used in tubular grafts for endoluminal placement within a body lumen, including blood vessels, and for the treatment of abdominal and other aneurysms.
    • 腔内假体包括管状移植物,可扩张的环状支撑结构和限制假体处于折叠构造的约束机构,其中环形支撑结构被压缩至低轮廓。 限制机构将环形支撑结构保持在折叠构型中,直到假体被定位用于展开。 然后释放约束机构以允许环形支撑结构膨胀成与其中将要展开假体的内腔的内壁相一致的接合。 根据本发明的特征提供了一种气囊导管,其上装载假体用于展开,其中气囊被扩张以提供径向力以释放约束机构。 另一个特征提供了限制构件,其在施加径向力时破裂,以将环形支撑结构从其约束构型释放。 本发明的另一个特征提供了环形支撑构件的独立和/或顺序释放。 根据本发明,可以使用以各种方式附接到管状移植物上的各种类型的环形支撑构件。 本发明可用于管状移植物,用于腔内放置在体腔内,包括血管,以及用于治疗腹部和其他动脉瘤。
    • 62. 发明授权
    • Method and apparatus for venous drainage and retrograde coronary perfusion
    • 静脉引流和逆行冠状动脉灌注的方法和装置
    • US06821263B2
    • 2004-11-23
    • US10759310
    • 2004-01-16
    • Jay A. LenkerEugene M. Breznock
    • Jay A. LenkerEugene M. Breznock
    • A61M3700
    • A61M1/3653A61M1/3613A61M1/3656A61M1/3659A61M1/3664A61M2025/1013A61M2202/047
    • 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. The device allows for the delivery of retrograde cardioplegia to the coronary circulation of both the right and the left side of the heart. The device further includes protection mechanisms to prevent overinflation or excessive pressurization of the right atrium during retrograde delivery of cardioplegia solution.
    • 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液是必需的,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,在缺血性心脏骤停或功能障碍期间灌注组织。 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。 该装置允许将逆行心麻痹递送到心脏右侧和左侧的冠状动脉循环。 该装置还包括用于在逆行递送心麻痹液期间防止右心房过度充气或过度加压的保护机制。
    • 67. 发明授权
    • Resorbable urethral stent and apparatus for its insertion
    • 可再吸收的尿道支架及其插入装置
    • US5160341A
    • 1992-11-03
    • US610543
    • 1990-11-08
    • Rodney A. BrennemanJay A. Lenker
    • Rodney A. BrennemanJay A. Lenker
    • A61F2/02A61F2/04A61F2/88
    • A61F2/962A61F2/88A61F2002/047A61F2002/9517A61F2210/0004
    • A resorbable stent, particularly adapted for implantation in the penile urethra, comprises a helical coil formed from a filament of a biocompatible, biodegradable material that is resiliently deformable. The stent is compressible from a first diameter to a smaller second diameter, and restores itself substantially to its first diameter by its own resiliency when the compressing force is removed. Polymers of polylactic acid and polyglycolic acid are preferred materials. A device for inserting the stent has a first embodiment that includes a retractable sheath surrounding a rotatable rod journaled in a stationary bushing. The stent is mounted on the rod and the bushing so that relative rotation of the rod and bushing compresses the stent by coiling it more tightly. The sheath is inserted into the urethra with the stent compressed inside of it, and the retracted. The rod and bushing are then relatively rotated so as to uncoil the stent, which is restored to its first diameter. A shearing sleeve is actuated to detach the stent from the rod and the bushing. A second embodiment includes a plunger on which the stent is detachably mounted. The plunger is inserted through the sheath, thereby compressing the stent. When the stent is discharged through the distal end of the sheath into the urethra, the stent resiliently restores itself to its first diameter.
    • 特别适于植入阴茎尿道的可再吸收支架包括由可弹性变形的生物相容性可生物降解材料的细丝形成的螺旋线圈。 支架可以从第一直径压缩到较小的第二直径,并且当压缩力被去除时,其自身基本上恢复到其第一直径。 聚乳酸和聚乙醇酸的聚合物是优选的材料。 用于插入支架的装置具有第一实施例,其包括围绕在固定衬套中轴颈的可旋转杆的可缩回护套。 支架安装在杆和衬套上,使得杆和衬套的相对旋转通过更紧密地卷绕来压缩支架。 将护套插入尿道,将支架压缩在其内部并缩回。 然后将杆和衬套相对地旋转,以便展开恢复到其第一直径的支架。 致动一个剪切套筒将支架从杆和衬套上拆下。 第二实施例包括柱塞,支架可拆卸地安装在柱塞上。 柱塞通过护套插入,从而压缩支架。 当支架通过护套的远端排出到尿道中时,支架弹性恢复其第一直径。