阅读说明：本技术 用于确定通过植入式血管支持系统的流体体积流量的方法和血管支持系统 (Method for determining a fluid volume flow through an implantable vascular support system and vascular support system ) 是由 哈迪·鲍姆巴赫 朱利安·卡塞尔 英加·谢伦伯格 马丁纳·布德 托马斯·亚历山大·施勒布施 于 2019-06-06 设计创作，主要内容包括：本发明涉及一种用于确定通过植入式血管支持系统(2)的流体体积流量(1)的方法,其包括以下步骤：a)确定支持系统(2)的套管(4)的区域中的流体温度参数,b)操作加热元件(5),所述加热元件可以引起套管(4)中的流体温度的变化,c)至少使用流体温度参数或其变化和至少一个加热元件操作参数或其变化来确定流体体积流量(1)。本发明还涉及一种血管支持系统。(The invention relates to a method for determining a fluid volume flow (1) through an implantable vascular support system (2), comprising the following steps: a) determining a fluid temperature parameter in the region of a casing (4) of the support system (2), b) operating a heating element (5) which can cause a change in the fluid temperature in the casing (4), c) determining the fluid volume flow (1) using at least the fluid temperature parameter or a change thereof and at least one heating element operating parameter or a change thereof. The invention also relates to a vascular support system.)

1. A method for determining a fluid volume flow (1) through an implantable vascular support system (2), comprising the steps of:

a) determining a fluid temperature parameter in the region of the casing (4) of the support system (2),

b) operating a heating element (5) capable of causing a change in the temperature of the fluid in the sleeve (4),

c) determining the fluid volume flow (1) using at least the fluid temperature parameter or a change thereof and at least one heating element operating parameter or a change thereof.

2. The method according to claim 1, wherein the heating element (5) is operated with a defined electrical power.

3. The method according to claim 2, wherein the temperature of the heating element (5) is measured.

4. The method according to claim 1, wherein the heating element (5) is kept at a constant temperature.

5. Method according to claim 4, wherein the electrical power of the heating element (5) is measured.

6. The method according to claim 1, wherein the heating element (5) is operated in a pulsed manner.

7. Method according to claim 6, wherein in step c) a change in the temperature of the fluid is detected by means of a temperature sensor (3).

8. A processing unit (6) configured to perform the method according to one of the preceding claims.

9. An implantable vascular support system (2), comprising:

-a temperature measuring device in the region of the casing (4) supporting the system (2),

-a heating element (5) capable of causing a change in the temperature of the fluid in the sleeve (4).

10. The support system according to claim 9, further comprising a processing unit (6) configured to perform the method according to one of claims 1 to 7.

11. Support system according to claim 9 or 10, characterized by a flow machine (32) for conveying fluid through the casing (4), by means of which casing fluid can be conducted to the flow machine (32).

12. Support system according to claim 11, characterized in that the cannula (4) is designed for conducting fluid in the form of blood from a ventricle (9) of the heart into the aorta (10).

13. Support system according to claim 11 or 12, characterized in that the temperature measuring device has a temperature sensor (3) for measuring a reference temperature, which temperature sensor is arranged at the end of the sleeve (4) facing away from the flow machine.

14. Support system according to one of claims 11 to 13, characterized in that the heating element (5) is arranged on the inner wall of the sleeve (4).

15. Support system according to claim 13 or 14, characterized in that the heating element (5) is arranged in the sleeve (4) in a portion of the sleeve (4) arranged at a distance from the temperature sensor (3) and the flow generator (32).

16. Support system according to claim 15, characterized in that the heating element (5) is formed as a heating wire or filament.

17. Support system according to one of claims 13 to 16, characterized by a further temperature sensor (24).

18. Support system according to claim 17, characterized in that the further temperature sensor (24) is thermally coupled to the heating element (5).

19. Support system according to claim 17, characterized in that the further temperature sensor (24) is arranged between the heating element (5) and the flow machine (32).

20. Support system according to one of the claims 11 to 14, characterized by a tubular elongated structure having a sleeve portion in which the sleeve (21) is formed and having a flow generator portion connected with the sleeve portion and in which the flow generator (32) is arranged.

21. Support system according to claim 11 or 12, characterized in that the temperature measuring device has a temperature sensor (3) arranged between the heating element (5) and the flow machine (32) for measuring the temperature of the fluid supplied to the flow machine.

22. Support system according to claim 21, characterized in that the temperature sensor (3) is arranged on the inner wall of the sleeve (4).