公开(公告)号：US10099050B2

公开(公告)日：2018-10-16

申请号：US15410161

申请日：2017-01-19

Applicant: Medtronic, Inc.

Inventor： Xin Chen ,  Michael D. Eggen ,  Vladimir Grubac ,  Brian P. Colin ,  Wei Gan ,  Thomas A. Anderson ,  Kathryn Hilpisch

IPC: A61N1/00 ,  A61N1/05 ,  A61N1/362 ,  A61N1/375 ,  A61N1/372

Abstract: A fixation mechanism of an implantable medical device is formed by a plurality of tines fixedly mounted around a perimeter of a distal end of the device. Each tine may be said to include a first segment fixedly attached to the device, a second segment extending from the first segment, and a third segment, to which the second segment extends. When the device is loaded in a lumen of a delivery tool and a rounded free distal end of each tine engages a sidewall that defines the lumen, to hold the tines in a spring-loaded condition, the first segment of each tine, which has a spring-biased pre-formed curvature, becomes relatively straightened, and the third segment of each tine, which is terminated by the free distal end, extends away from the axis of the device at an acute angle in a range from about 45 degrees to about 75 degrees.

公开(公告)号：US20180021571A1

公开(公告)日：2018-01-25

申请号：US15216466

申请日：2016-07-21

Applicant: Medtronic, Inc.

Inventor： Thomas A. Anderson ,  Andrea J. Asleson ,  Michael D. Eggen ,  McKenna Rose Redmond ,  Zhongping Yang

IPC: A61N1/05 ,  A61B17/34

CPC classification number: A61N1/0592 ,  A61B17/3468 ,  A61N1/37512 ,  A61N1/3756

Abstract: A catheter assembly includes a cap and a spring-biased tethering member coupled thereto. The cap includes first and second portions, and a transition zone extending therebetween. A girth of the first portion is sized to fit within a distal-most opening of the catheter assembly; and a girth of the second portion tapers from a first size at the transition zone, which is too large to fit within the distal-most opening, to a smaller size at a distal end of the cap. The spring-biased tethering member holds the cap in open and closed positions, when the cap first portion extends within the distal-most opening, and when the cap is separated from the distal-most opening, respectively. At the closed position, the first portion is approximately concentric with the distal-most opening, and at the open position, an entirety of the cap is laterally offset from the distal-most opening.

公开(公告)号：US20160059003A1

公开(公告)日：2016-03-03

申请号：US14518261

申请日：2014-10-20

Applicant: Medtronic, Inc.

Inventor： Michael D. Eggen ,  James K. Carney ,  Matthew D. Bonner ,  Vladimir Grubac ,  Douglas S. Hine ,  Thomas D. Brostrom ,  John L. Sommer

IPC: A61N1/05

CPC classification number: A61N1/057 ,  A61N1/37518 ,  A61N1/3756

Abstract: A relatively compact implantable medical device includes a fixation member formed by a plurality of fingers mounted around a perimeter of a distal end of a housing of the device; each finger is elastically deformable from a relaxed condition to an extended condition, to accommodate delivery of the device to a target implant site, and from the relaxed condition to a compressed condition, to accommodate wedging of the fingers between opposing tissue surfaces at the target implant site, wherein the compressed fingers hold a cardiac pacing electrode of the device in intimate tissue contact for the delivery of pacing stimulation to the site. Each fixation finger is preferably configured to prevent penetration thereof within the tissue when the fingers are compressed and wedged between the opposing tissue surfaces. The pacing electrode may be mounted on a pacing extension, which extends distally from the distal end of the device housing.

Abstract translation: 相对紧凑的可植入医疗装置包括由安装在装置的壳体的远端的周边周围的多个指状物形成的固定构件; 每个手指可以从松弛状态弹性变形到延伸状态，以适应装置到目标植入部位的输送，以及从松弛状态到压缩状态，以适应手指在目标植入物的相对组织表面之间的楔入 其中所述压缩的指状物将所述装置的心脏起搏电极保持在紧密组织接触中，以用于将所述起搏刺激递送至所述部位。 每个固定指状物优选构造成当手指被压缩并楔入相对的组织表面之间时防止其在组织内的穿透。 起搏电极可以安装在起搏延伸部上，其从装置壳体的远端向远侧延伸。

公开(公告)号：US20140324145A1

公开(公告)日：2014-10-30

申请号：US13869509

申请日：2013-04-24

Applicant: MEDTRONIC, INC.

Inventor： Michael D. Eggen ,  Zhongping Yang ,  Rick D. McVenes ,  Noelle C. Hurtig ,  Raymond W. Usher

IPC: A61N1/05

CPC classification number: A61N1/0573 ,  A61N1/059 ,  A61N1/37205

Abstract: A fixation member of an electrode assembly for an implantable medical device includes a tissue engaging portion extending along a circular path, between a piercing distal tip thereof and a fixed end of the member. The circular path extends around a longitudinal axis of the assembly. A helical structure of the assembly, which includes an electrode surface formed thereon and a piercing distal tip, also extends around the longitudinal axis and is located within a perimeter of the circular path. The tissue engaging portion of the fixation member extends from the distal tip thereof in a direction along the circular path that is the same as that in which the helical structure extends from the distal tip thereof. The electrode assembly may include a pair of the fixation members, wherein each tissue engaging portion may extend approximately one half turn along the circular path.

Abstract translation: 用于可植入医疗装置的电极组件的固定构件包括沿圆形路径延伸的组织接合部分，其穿孔远端和构件的固定端之间。 圆形路径围绕组件的纵向轴线延伸。 包括其上形成的电极表面和穿刺的远端的组件的螺旋结构也围绕纵向轴线延伸并且位于圆形路径的周边内。 固定构件的组织接合部分沿着与其螺旋结构从其远端延伸的方向相同的圆形路径的方向从其远端延伸。 电极组件可以包括一对固定构件，其中每个组织接合部分可以沿着圆形路径延伸约一半匝。