公开(公告)号：US10012226B2

公开(公告)日：2018-07-03

申请号：US15215293

申请日：2016-07-20

Applicant: Medtronic, Inc.

Inventor： Craig Petersen ,  Kartik Radhakrishnan ,  Walter Carpenter

IPC: F04B43/12 ,  F04B49/06 ,  F04B53/16

CPC classification number: F04B43/1276 ,  F04B43/1253 ,  F04B49/065 ,  F04B53/16 ,  F04B2203/0207 ,  F04B2205/03 ,  F04B2205/09

Abstract: A roller pump including a drive shaft, a motor, a roller head assembly, a stator housing, and an occlusion adjustment assembly. The drive shaft is coupled to the motor. The roller head assembly includes a hub, a slide body, and a roller. The hub is mounted to the drive shaft, and maintains the slide body and the roller. The stator housing forms a raceway receiving surface. The occlusion adjustment assembly includes an actuator knob, an actuating structure, and a ground shaft. The actuating structure interfaces with the slide body, and thus the roller, with rotation of the knob. The ground shaft supports the knob and is rotationally isolated from the drive shaft. A user and optionally a control system can adjust occlusion while the pump continuously delivers a fluid medium.

公开(公告)号：US20130144538A1

公开(公告)日：2013-06-06

申请号：US13706453

申请日：2012-12-06

Applicant: MEDTRONIC, INC.

Inventor： Daniel Cheek ,  Lawrence Erickson ,  Trevor Huang ,  Tessy Kanayinkal ,  Craig Petersen ,  Charlene Yuan

IPC: G01N33/49

CPC classification number: G01N33/4905 ,  G01N33/86

Abstract: Activated clotting time (ACT) tests detect blood clotting time based on the viscosity changes of a test sample, using a ferromagnetic washer lifted to the top of a test chamber and then dropped from the top via gravity; a drop time greater than a preset threshold value indicates clotting of the test sample. Blood samples which have high levels of heparin usually produce very weak clots that may easily be destroyed by the lifting movement of the washer. But if the clot threshold is set low to detect the weak clots, false detections occur during early testing cycles when activators are not fully suspended during the mixing cycle. Improved algorithms for lifting the washer and adjusting over time enable accurate detection of weak clots.

Abstract translation: 活化凝血时间（ACT）测试根据测试样品的粘度变化检测血液凝固时间，使用提升到测试室顶部的铁磁垫圈，然后通过重力从顶部滴落; 大于预设阈值的下降时间表示测试样品的凝血。 具有高水平肝素的血液样品通常产生非常弱的凝块，这可能容易被洗涤器的提升运动所破坏。 但是，如果凝块阈值设置为低以检测弱凝块，则在早期测试周期期间发生错误检测，当激活剂在混合循环期间未完全悬浮时。 用于提升洗衣机和随时间调整的改进的算法可以准确检测弱凝块。

公开(公告)号：US20140127063A1

公开(公告)日：2014-05-08

申请号：US13668768

申请日：2012-11-05

Applicant: MEDTRONIC, INC.

Inventor： Craig Petersen ,  Kartik Radhakrishnan ,  Walter Carpenter

IPC: F04B43/12

CPC classification number: F04B43/1276 ,  F04B43/1253 ,  F04B49/065 ,  F04B53/16 ,  F04B2203/0207 ,  F04B2205/03 ,  F04B2205/09

Abstract: A roller pump including a drive shaft, a motor, a roller head assembly, a stator housing, and an occlusion adjustment assembly. The drive shaft is coupled to the motor. The roller head assembly includes a hub, a slide body, and a roller. The hub is mounted to the drive shaft, and maintains the slide body and the roller. The stator housing forms a raceway receiving surface. The occlusion adjustment assembly includes an actuator knob, an actuating structure, and a ground shaft. The actuating structure interfaces with the slide body, and thus the roller, with rotation of the knob. The ground shaft supports the knob and is rotationally isolated from the drive shaft. A user and optionally a control system can adjust occlusion while the pump continuously delivers a fluid medium.

Abstract translation: 一种包括驱动轴，马达，滚子头组件，定子壳体和闭塞调节组件的滚子泵。 驱动轴联接到电机。 辊头组件包括轮毂，滑动体和辊。 轮毂安装在驱动轴上，并保持滑动体和滚子。 定子壳体形成一个滚道接收表面。 闭塞调节组件包括致动器旋钮，致动结构和接地轴。 致动结构与滑块本体接合，因此与旋钮旋转。 地面轴支撑旋钮并与驱动轴旋转隔离。 用户和可选的控制系统可以在泵连续输送流体介质的同时调节闭塞。

公开(公告)号：US10371694B2

公开(公告)日：2019-08-06

申请号：US15135327

申请日：2016-04-21

Applicant: Medtronic, Inc.

Inventor： Daniel Cheek ,  Lawrence Erickson ,  Trevor Huang ,  Tessy Kanayinkal ,  Craig Petersen ,  Charlene Yuan

IPC: G01N33/49 ,  G01N33/86

Abstract: Activated clotting time (ACT) tests detect blood clotting time based on the viscosity changes of a test sample, using a ferromagnetic washer lifted to the top of a test chamber and then dropped from the top via gravity; a drop time greater than a preset threshold value indicates clotting of the test sample. Blood samples which have high levels of heparin usually produce very weak clots that may easily be destroyed by the lifting movement of the washer. But if the clot threshold is set low to detect the weak clots, false detections occur during early testing cycles when activators are not fully suspended during the mixing cycle. Improved algorithms for lifting the washer and adjusting over time enable accurate detection of weak clots.

公开(公告)号：US09429563B2

公开(公告)日：2016-08-30

申请号：US13706453

申请日：2012-12-06

Applicant: Medtronic, Inc.

Inventor： Daniel Cheek ,  Lawrence Erickson ,  Trevor Huang ,  Tessy Kanayinkal ,  Craig Petersen ,  Charlene Yuan

IPC: G01N33/49

CPC classification number: G01N33/4905 ,  G01N33/86

Abstract: Activated clotting time (ACT) tests detect blood clotting time based on the viscosity changes of a test sample, using a ferromagnetic washer lifted to the top of a test chamber and then dropped from the top via gravity; a drop time greater than a preset threshold value indicates clotting of the test sample. Blood samples which have high levels of heparin usually produce very weak clots that may easily be destroyed by the lifting movement of the washer. But if the clot threshold is set low to detect the weak clots, false detections occur during early testing cycles when activators are not fully suspended during the mixing cycle. Improved algorithms for lifting the washer and adjusting over time enable accurate detection of weak clots.

Abstract translation: 活化凝血时间（ACT）测试根据测试样品的粘度变化检测血液凝固时间，使用提升到测试室顶部的铁磁垫圈，然后通过重力从顶部滴落; 大于预设阈值的下降时间表示测试样品的凝血。 具有高水平肝素的血液样品通常产生非常弱的凝块，这可能容易被洗涤器的提升运动所破坏。 但是，如果凝块阈值设置为低以检测弱凝块，则在早期测试周期期间发生错误检测，当激活剂在混合循环期间未完全悬浮时。 用于提升洗衣机和随时间调整的改进的算法可以准确检测弱凝块。

公开(公告)号：US20160327034A1

公开(公告)日：2016-11-10

申请号：US15215293

申请日：2016-07-20

Applicant: Medtronic, Inc.

Inventor： Craig Petersen ,  Kartik Radhakrishnan ,  Walter Carpenter

IPC: F04B43/12 ,  F04B53/16 ,  F04B49/06

CPC classification number: F04B43/1276 ,  F04B43/1253 ,  F04B49/065 ,  F04B53/16 ,  F04B2203/0207 ,  F04B2205/03 ,  F04B2205/09

Abstract: A roller pump including a drive shaft, a motor, a roller head assembly, a stator housing, and an occlusion adjustment assembly. The drive shaft is coupled to the motor. The roller head assembly includes a hub, a slide body, and a roller. The hub is mounted to the drive shaft, and maintains the slide body and the roller. The stator housing forms a raceway receiving surface. The occlusion adjustment assembly includes an actuator knob, an actuating structure, and a ground shaft. The actuating structure interfaces with the slide body, and thus the roller, with rotation of the knob. The ground shaft supports the knob and is rotationally isolated from the drive shaft. A user and optionally a control system can adjust occlusion while the pump continuously delivers a fluid medium.

Abstract translation: 一种包括驱动轴，马达，滚子头组件，定子壳体和闭塞调节组件的滚子泵。 驱动轴联接到电机。 辊头组件包括轮毂，滑动体和辊。 轮毂安装在驱动轴上，并保持滑动体和滚子。 定子壳体形成一个滚道接收表面。 闭塞调节组件包括致动器旋钮，致动结构和接地轴。 致动结构与滑块本体接合，因此与旋钮旋转。 地面轴支撑旋钮并与驱动轴旋转隔离。 用户和可选的控制系统可以在泵连续输送流体介质的同时调节闭塞。

公开(公告)号：US09422932B2

公开(公告)日：2016-08-23

申请号：US13668768

申请日：2012-11-05

Applicant: Medtronic, Inc.

Inventor： Craig Petersen ,  Kartik Radhakrishnan ,  Walter Carpenter

IPC: F04B43/12

CPC classification number: F04B43/1276 ,  F04B43/1253 ,  F04B49/065 ,  F04B53/16 ,  F04B2203/0207 ,  F04B2205/03 ,  F04B2205/09

Abstract: A roller pump including a drive shaft, a motor, a roller head assembly, a stator housing, and an occlusion adjustment assembly. The drive shaft is coupled to the motor. The roller head assembly includes a hub, a slide body, and a roller. The hub is mounted to the drive shaft, and maintains the slide body and the roller. The stator housing forms a raceway receiving surface. The occlusion adjustment assembly includes an actuator knob, an actuating structure, and a ground shaft. The actuating structure interfaces with the slide body, and thus the roller, with rotation of the knob. The ground shaft supports the knob and is rotationally isolated from the drive shaft. A user and optionally a control system can adjust occlusion while the pump continuously delivers a fluid medium.

Abstract translation: 一种包括驱动轴，马达，滚子头组件，定子壳体和闭塞调节组件的滚子泵。 驱动轴联接到电机。 辊头组件包括轮毂，滑动体和辊。 轮毂安装在驱动轴上，并保持滑动体和滚子。 定子壳体形成一个滚道接收表面。 闭塞调节组件包括致动器旋钮，致动结构和接地轴。 致动结构与滑块本体接合，因此与旋钮旋转。 地面轴支撑旋钮并与驱动轴旋转隔离。 用户和可选的控制系统可以在泵连续输送流体介质的同时调节闭塞。

公开(公告)号：US20160238621A1

公开(公告)日：2016-08-18

申请号：US15135327

申请日：2016-04-21

Applicant: Medtronic, Inc.

Inventor： Daniel Cheek ,  Lawrence Erickson ,  Trevor Huang ,  Tessy Kanayinkal ,  Craig Petersen ,  Charlene Yuan

IPC: G01N33/86

CPC classification number: G01N33/4905 ,  G01N33/86

Abstract: Activated clotting time (ACT) tests detect blood clotting time based on the viscosity changes of a test sample, using a ferromagnetic washer lifted to the top of a test chamber and then dropped from the top via gravity; a drop time greater than a preset threshold value indicates clotting of the test sample. Blood samples which have high levels of heparin usually produce very weak clots that may easily be destroyed by the lifting movement of the washer. But if the clot threshold is set low to detect the weak clots, false detections occur during early testing cycles when activators are not fully suspended during the mixing cycle. Improved algorithms for lifting the washer and adjusting over time enable accurate detection of weak clots.