JP-2026514510-A - Circulation support system

Abstract

An example of a cardiac pump system includes a catheter shaft having a proximal end region coupled to a handle and a distal end region coupled to a cardiac pump. The cardiac pump includes an impeller housing, a cannula, and an impeller. The cannula has a distal end region and a proximal end region. The distal end region of the cannula is configured to be positioned in the left ventricle of the heart. Furthermore, the cardiac pump system includes a first flow sensor coupled to the cannula or catheter shaft. The first flow sensor is configured to directly sense a first velocity of blood flowing adjacent to the first flow sensor.

Inventors

• リュー、チェン
• チャレキアン、アーロン
• レイノルズ、ブライアン アール．

Assignees

• ボストン サイエンティフィック サイムド，インコーポレイテッド

Dates

Publication Date

20260511

Application Date

20240426

Priority Date

20230428

Claims (15)

1. It is a heart pump system, A catheter shaft having a proximal end region connected to a handle and a distal end region connected to a cardiac pump, wherein the cardiac pump includes an impeller housing, a cannula, and an impeller, the cannula includes a distal end region and a proximal end region, and the distal end region of the cannula is configured to be positioned in the left ventricle of the heart, A cardiac pump system comprising: a first flow sensor coupled to the cannula or the catheter shaft, wherein the first flow sensor is configured to directly sense a first velocity of blood flowing adjacent to the first flow sensor.
2. The system further comprises a console coupled to the handle, the console including a processor, and the console configured to receive a first signal from the first flow sensor. The cardiac pump system according to claim 1.
3. The first signal corresponds to the first velocity of blood sensed by the first flow sensor, The cardiac pump system according to claim 1 or 2.
4. The processor is configured to calculate the cardiac output of the heart based on the first velocity of the blood sensed by the first flow sensor. A cardiac pump system according to any one of claims 1 to 3.
5. The first flow sensor is attached to the outer surface of the distal end region of the cannula. A cardiac pump system according to any one of claims 1 to 4.
6. The first flow sensor is embedded in the wall portion of the cannula. A cardiac pump system according to any one of claims 1 to 4.
7. The first flow sensor is coupled to the cannula, and the cardiac pump system further includes a second flow sensor coupled to the catheter shaft. A cardiac pump system according to any one of claims 2 to 6.
8. The second flow sensor is configured to directly sense a second velocity of blood flowing adjacent to the second flow sensor, and the console is configured to receive a second signal from the second flow sensor, the second signal corresponding to the second velocity of blood flowing adjacent to the second flow sensor. The cardiac pump system according to claim 7.
9. The processor is configured to compare the first velocity of the blood sensed by the first flow sensor with the second velocity of the blood sensed by the second flow sensor. A cardiac pump system according to any one of claims 7 to 9.
10. The processor is configured to calculate the position of the heart pump based on the result of comparing the first velocity of blood sensed by the first flow sensor with the second velocity of blood sensed by the second flow sensor. A cardiac pump system according to any one of claims 7 to 9.
11. The first flow sensor is positioned along the catheter shaft such that when the distal end region of the cannula is positioned in the left ventricle, it is positioned distal to the subclavian artery. A cardiac pump system according to any one of claims 1 to 10.
12. The first flow sensor is positioned along the catheter shaft such that when the distal end region of the cannula is positioned in the left ventricle, it is positioned proximal to the subclavian artery. A cardiac pump system according to any one of claims 1 to 11.
13. The first flow sensor is positioned along the catheter shaft such that, when the distal end region of the cannula is positioned in the left ventricle, it is adjacent to the renal artery and distal to the renal artery. The cardiac pump system according to any one of claims 1 to 12.
14. The first flow sensor is positioned along the catheter shaft such that, when the distal end region of the cannula is positioned in the left ventricle, it is adjacent to the renal artery and proximal to the renal artery. A cardiac pump system according to any one of claims 1 to 13.
15. It is a heart pump system, A console including a processor, A cardiac pump device comprising a handle connected to the console, a first catheter shaft having a proximal end region connected to the handle and a distal end region connected to the cardiac pump, an impeller, and a cannula, wherein the cannula includes a proximal end region and a distal end region, A cardiac pump system comprising: a first flow sensor coupled to the proximal end region of the cannula, the first flow sensor being positioned between the impeller and the distal end region of the cannula.

Description

This disclosure relates to a percutaneous circulatory support system. More specifically, this disclosure relates to a circulatory support device including one or more flow sensors. Percutaneous circulatory support devices, such as blood pumps, can provide temporary cardiac support in patients with reduced cardiac function or cardiac output. Such devices may be introduced percutaneously from the femoral artery, travel retrograde through the descending aorta, cross the aortic arch, pass through the ascending aorta and the aortic valve, and be delivered to the left ventricle. A certain percutaneous circulatory support device may include one or more flow sensors positioned on the device to directly measure blood flow in its vicinity. Direct measurement of blood flow can facilitate the derivation of the location of the support device within the heart, cardiac output, or other cardiac-related parameters. Therefore, there is a continuing need to provide circulatory support system including one or more flow sensors designed to provide cardiac information and/or other data related to cardiac procedures. A circulatory support system including one or more flow sensors designed to provide cardiac information and/or other data related to cardiac procedures is disclosed herein. This disclosure provides alternative designs, materials, manufacturing methods, and uses for medical devices and/or medical systems. An example of a cardiac pump system includes a catheter shaft having a proximal end region coupled to a handle and a distal end region coupled to a cardiac pump, wherein the cardiac pump includes an impeller housing, a cannula, and an impeller, the cannula having a distal end region and a proximal end region, and the distal end region of the cannula being configured to be positioned in the left ventricle of the heart, and the catheter shaft. Furthermore, the cardiac pump system includes a first flow sensor coupled to the cannula or the catheter shaft, the first flow sensor being configured to directly sense a first velocity of blood flowing adjacent to the first flow sensor. Alternatively or in addition to any of the above embodiments, the cardiac pump system further comprises a console coupled to the handle, the console including a processor, and the console configured to receive a first signal from the first flow sensor. In an alternative or additional configuration to any of the above embodiments, the cardiac pump system is configured such that the first signal corresponds to the first velocity of blood sensed by the first flow sensor. Alternatively or in addition to any of the above embodiments, the cardiac pump system is configured such that the processor calculates the cardiac output based on the first velocity of blood sensed by the first flow sensor. In an alternative or additional configuration to any of the above embodiments, the cardiac pump system is configured such that the first flow sensor is attached to the outer surface of the distal end region of the cannula. In an alternative or additional configuration to any of the above embodiments, the cardiac pump system is configured such that the first flow sensor is embedded within the wall of the cannula. Alternatively or in addition to any of the above embodiments, the cardiac pump system further includes a second flow sensor, the first flow sensor of which is coupled to the cannula, and the cardiac pump system is coupled to the catheter shaft. Alternatively or in addition to any of the above embodiments, the cardiac pump system is configured such that the second flow sensor directly senses a second velocity of blood flowing adjacent to the second flow sensor, and the console is configured to receive a second signal from the second flow sensor, the second signal corresponding to the second velocity of blood flowing adjacent to the second flow sensor. Alternatively or in addition to any of the above embodiments, the cardiac pump system is configured such that the processor compares the first blood velocity sensed by the first flow sensor with the second blood velocity sensed by the second flow sensor. Alternatively or in addition to any of the above embodiments, the cardiac pump system is configured such that the processor calculates the position of the cardiac pump based on a comparison of the first velocity of blood sensed by the first flow sensor with the second velocity of blood sensed by the second flow sensor. In an alternative or additional configuration to any of the above embodiments, the cardiac pump system is positioned along the catheter shaft such that the first flow sensor is located distal to the subclavian artery when the distal end region of the cannula is positioned in the left ventricle. In an alternative or additional configuration to any of the above embodiments, the cardiac pump system is positioned along the catheter shaft such that the first flow sensor is positioned proximal to the subclavian artery when the distal end region of th