JP3011298U - Extracorporeal circulation safety bypass circuit - Google Patents

Abstract

(57) [Summary] [Purpose] An increase in circuit pressure during extracorporeal circulation may cause damage to the oxygenator and is extremely dangerous. Therefore, we designed this safety bypass circuit for the purpose of preventing damage to the artificial lung and early detection of abnormal circuit pressure. [Structure] A bypass circuit in which traffic is blocked by an obstruction plug is provided in the extracorporeal circulation circuit. There is a thin film partition in the bypass circuit, and a structure is provided in which a chamber filled with physiological saline is provided between the blocking plug and the thin film partition.

Description

[Detailed description of the device]

[0001]

[Prior art]

 During extracorporeal circulation, which is an auxiliary means for heart surgery, an increase in circulatory pressure during driving for any reason could cause damage to the artificial lung, which was dangerous.

[0002]

[Problems to be solved by the device]

 Prevention of artificial lung injury and early detection of abnormal circuit pressure

[0003]

[Means for Solving the Problems]

 Provide a bypass circuit in the extracorporeal circulation circuit that blocks traffic with an obstruction plug. If the internal pressure rises abnormally in the main circuit, the obstruction plug is pushed downstream before the artificial lung damage occurs, and at the same time, the thin film septum ruptures. Since physiological saline is filled between the plug and the thin diaphragm, the same part is replaced with blood at the same time as an abnormality occurs, and the driver is instantly aware of the abnormality.

[0004]

[Action]

 Simultaneously with the abnormal rise in circuit pressure, the bypass circuit is activated and the circuit pressure drops until the cause is removed. If the cause is found and removed, the bypass circuit will be cut off and the normal operation will be restored immediately, enabling extremely safe operation.

[0005]

【Example】

 This safety bypass circuit is incorporated into the conventional extracorporeal circuit. After filling the main circuit in the usual way, the space between the block plug and the membrane partition is filled with physiological saline. The operation of extracorporeal circulation can be carried out exactly as usual.

[0006]

[Effect of device]

 The safety of the extracorporeal circulation is improved because it is possible to prevent damage to the artificial lung due to a sudden increase in circuit pressure and to promptly recognize the situation.

[0007]

[Brief description of drawings]

1] Bypass circuit structure diagram

[Fig. 2] Diagram during operation

[Fig. 3] Overall view of extracorporeal circulation circuit

[Explanation of symbols]

 1 Closure Plug 2 Physiological Saline 3 Thin Membrane Partition 4 Physiological Saline Inlet 5 Circuit Blocking Factor

Claims (1)

[Scope of utility model registration request] 1. A safety bypass circuit for preventing damage to an artificial lung due to an increase in internal pressure of an extracorporeal circulation circuit.