CN201171816Y - A liquid pressure balance adjustment device for an independent perfusion bionic circulatory system - Google Patents

Abstract

The utility model relates to a liquid pressure balance regulating device for an independent perfusion bionic circulatory system, which comprises a capacity chamber, a piston and an air intake pipe, the piston is assembled in the capacity chamber, and the two are closely matched to adjust the gas capacity in the capacity chamber , The front end of the piston is provided with a sealing ring to prevent air leakage. The side wall of the capacity chamber is connected with an air inlet pipe, and gas is input into the capacity chamber, and an air outlet channel is provided at the lower end of the capacity chamber, through which the air outlet channel is connected to the tee of the pump out pipe of the independent perfusion bionic circulatory system. The liquid provides suitable cushioning, and different gas volumes can be used for different perfusion flow rates and flow rates. Switches are provided on both the air inlet pipe and the air outlet channel. The utility model has the advantages of simple structure and convenient use, can conveniently adjust the perfusion liquid pressure in the bionic independent circulation system, and can be used as a disposable product.

Description

A liquid pressure balance adjustment device for an independent perfusion bionic circulatory system

technical field

The utility model relates to the field of medical equipment and experimental research, in particular to a liquid pressure balance regulating device used in an independent perfusion bionic circulation system.

Background technique

Organ transplantation has become an effective treatment for many end-organ diseases, especially liver and kidney diseases. The preservation time of large organs in vitro and the survival quality of organs after transplantation are particularly noticeable. At present, many methods for alleviating rejection after organ transplantation have a very good effect in the experimental state, but the clinical application of these methods is limited due to the simple cold storage method for isolated large organs, short storage time and low temperature state. Transgenic therapy aimed at alleviating rejection of transplanted organs and inducing immune tolerance in recipients is difficult to implement clinically.

The simulated preservation method of in vivo environment of isolated organs provides good preservation conditions for large isolated organs, and normal temperature conditions within a certain period of time make it possible for the efficient pretreatment of isolated organs before transplantation.

In modern surgical techniques, whether it is relatively simple hemodialysis or relatively complex extracorporeal circulation, they are all completed in the human vasculature, and the balance of the perfusion pressure relies on the good blood pressure regulation mechanism of the human arteriovenous system. However, there is no human vascular system with a physiological adjustment mechanism in the bionic circulatory system for independent perfusion of organs in vitro, and the silicone tube and human blood vessels commonly used in the perfusion system cannot achieve the same fluid pressure regulation function.

In view of the fact that the current independent perfusion bionic circulatory system cannot achieve a good balance of the pressure of the perfusion fluid, in order to meet the needs of clinical and experimental research, there is an urgent need for a simple structure and easy operation that can be used to adjust the perfusion pressure in the independent perfusion bionic circulatory system. assisting equipments.

Utility model content

In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides a pressure balance adjusting device which can be used for adjusting the pressure of the perfusate in an independent perfusion bionic circulation system, has a simple structure and is easy to operate.

The technical scheme of the utility model is as follows:

A liquid pressure balance adjustment device for an independent perfusion bionic circulatory system, which includes a volume chamber, a piston and an intake pipe, the piston is assembled in the volume chamber, and the two are closely matched to adjust the gas volume in the volume chamber. The front end of the piston is set There is a sealing ring to prevent air leakage. The lower side wall of the capacity chamber is connected with an air intake pipe, and gas is input into the capacity chamber, and an air outlet channel is arranged at the lower end of the capacity chamber, through which the capacity chamber is connected to the tee of the pumping pipeline of the independent perfusion bionic circulatory system, The gas in the volume chamber can provide a suitable buffer for the liquid in the circulation system, and different gas volumes can be used for different perfusion flows and flow rates. A switch is arranged on the air inlet pipe and the air outlet channel.

The air inlet pipe extends upwards higher than the capacity chamber, which can prevent the liquid in the perfusion pipe of the circulation system from overflowing.

The utility model has the advantages of simple structure and convenient use, can conveniently adjust the perfusion liquid pressure in the bionic independent circulation system, and can be used as a disposable article.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Referring to Fig. 1, the perfusion liquid pressure balance adjustment device mainly includes a volume chamber 1, a piston 2 and an intake pipe 3, the inner diameter of the volume chamber 1 is consistent with the outer diameter of the piston 2, and the piston 2 is assembled in the volume chamber 1, and the two coincide exactly. There is a sealing ring 4 at the front end of the piston 2, an air outlet channel 5 is provided at the lower end of the volume chamber 1, and a switch 6 is arranged on the air outlet channel 5, and the lower side wall of the volume chamber 1 is connected with the intake pipe 3, and the intake pipe 3 extends upward to slightly higher than The height of the capacity chamber 1 and the upper end of the intake pipe 3 are also provided with a switch 7 .

Instructions:

Connect the outlet channel 5 at the lower end of the liquid pressure balance adjustment device to the tee of the pump outlet pipeline of the independent perfusion bionic circulatory system, turn on the switch 7 on the inlet pipeline 3, and move the piston 2 upward manually or through the automatic control system, To adjust the gas capacity of the capacity chamber 1, turn off the switch 7 on the intake pipe 3 after reaching the set value, then turn on the switch 6 on the outlet channel 5 at the lower end of the capacity chamber 1, start the perfusion pump, and pass the gas in the capacity chamber 1 The pressure of the perfusion liquid in the perfusion bionic circulatory system is adjusted, so as to realize the pressure balance of the perfusion liquid of the independent perfusion bionic circulatory system.

Claims (2)

1. A liquid pressure balance regulator for an independent perfusion bionic circulatory system, characterized in that it includes a capacity chamber (1), a piston (2) and an air intake duct (3), and the piston (2) is assembled in the capacity chamber ( 1), the two are closely matched, the front end of the piston (2) is provided with a sealing ring (4), the lower side wall of the volume chamber (1) is connected to the air inlet pipe (3), and the lower end of the volume chamber (1) is provided with an air outlet A channel (5), a switch is provided on both the air inlet pipe (3) and the air outlet channel (5). 2. The liquid pressure balance adjusting device for an independent perfusion bionic circulatory system according to claim 1, characterized in that the inlet pipe (3) extends upwards higher than the overcapacity chamber (1).

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