CN205038891U - External simulation ventricular system device - Google Patents

Abstract

An in vitro device for simulating a ventricular system, comprising an outer bag, an inner water bag, a first pipeline, a second pipeline and an outer controller, the inner water bag is arranged in the outer bag, and a pressure sensor is installed on the inner wall of the outer bag; the first One end of a pipe passes through the outer bag from above to communicate with the inner water bag, and an upper valve is installed on the first pipe; one end of the second pipe passes through the outer bag from below to communicate with the inner water bag, and the second pipe is The lower valve is installed; the external controller is respectively connected with the upper valve, the lower valve and the pressure sensor. With the above technical solution, the utility model has a simple structure and reliable use of an in vitro simulated ventricular system device, which can monitor the pressure of the patient's intracranial ventricular system in real time, and adjust the drainage volume outside the body according to the pressure change. At the same time, the utility model avoids direct contact between the pressure sensor and the cerebrospinal fluid, thereby reducing the risk of intracranial infection.

Description

In vitro simulated ventricular system device

technical field

The utility model relates to the field of lateral ventricle external drainage technology and intracranial pressure detection, in particular to an in vitro simulated cerebral ventricle system device.

Background technique

For many neurosurgical diseases, extracorporeal drainage of the lateral ventricle is clinically required. Extracorporeal drainage of the lateral ventricle is the drainage of the cerebrospinal fluid or blood accumulated in the ventricle to the outside of the body. The currently used drainage devices basically use a rigid drainage tube to connect to a drainage bag, and the drainage volume is adjusted by adjusting the height of the drainage bag to control the pressure of the drainage outlet of the ventricle. In actual clinical application, the pressure of the patient's intracranial ventricular system can be changed due to factors such as body position, infusion, and emotion. Because the pressure change of the intracranial ventricular system cannot be monitored, it is easy to cause excessive or insufficient drainage in clinical practice, and even cause cerebral palsy. Bleeding or brain herniation. In addition, in the current external ventricular drainage device, if the ventricular pressure needs to be measured, a baroreceptor must be implanted in contact with the cerebrospinal fluid, which increases the risk of intracranial infection.

Contents of the invention

The purpose of this utility model is to overcome the defects that the existing ventricular drainage device cannot observe the change of the intracranial ventricular system and it is difficult to adjust the drainage volume according to the change of the patient's intracranial pressure, and provide a device for simulating the ventricular system in vitro. The technical problem to be solved This makes it possible to control the drainage volume and monitor the real-time pressure outside the body, thus being more suitable for practical use.

The purpose of this utility model and its technical solution are to adopt the following technical solutions to achieve. According to the utility model, an in vitro simulated ventricle system device includes an outer capsule 3, an inner water capsule 4, a first pipeline 6, a second pipeline 7 and an external controller 8, and the inner water capsule 4 is arranged in the outer capsule 3 , the inner wall of the outer bag 3 is provided with a pressure sensor 5; one end of the first pipe 6 passes through the outer bag 3 from above to communicate with the inner water bag 4, and the upper valve 1 is installed on the first pipe 6; One end of the pipe 7 passes through the outer bag 3 and communicates with the inner water bag 4 from below, and the second pipe 7 is provided with a lower valve 2; the outer controller 8 is respectively connected to the upper valve 1, the lower valve 2 and the pressure sensor 5.

The purpose of the utility model and its technical problem solving also adopt the following technical measures to further realize.

In the aforementioned device for simulating the ventricular system in vitro, the outer capsule 3 is made of rigid medical materials, and the inner water bladder 4 is made of flexible medical materials. Because the inner water bag 4 is flexible, when the pressure of the patient's intracranial ventricular system is too high, the inner water bag 4 will over-inflate, and its outer wall will squeeze the pressure sensor 5 set on the inner wall of the outer bag 3 to generate an alarm signal and transmit it to the external controller 8.

In the aforementioned device for simulating the ventricular system in vitro, the first conduit 6 and the second conduit 7 are both flexible conduits.

In the aforementioned device for simulating the cerebroventricular system in vitro, the other end of the first pipeline 6 is connected to the patient's cerebrospinal fluid drainage tube, and the other end of the second pipeline 7 is connected to the cerebrospinal fluid collector.

With the above technical solution, the utility model has a simple structure and reliable use of an in vitro simulated ventricular system device, which can monitor the pressure of the patient's intracranial ventricular system in real time, and adjust the drainage volume outside the body according to the pressure change. At the same time, the utility model avoids the direct contact between the pressure sensor and the cerebrospinal fluid, and reduces the risk of intracranial infection.

To sum up, an in vitro simulating ventricle system device of the present invention has significant technical progress and has obvious positive effects. It is a novel, progressive and practical new design.

Description of drawings

Fig. 1 is a schematic structural diagram of an in vitro simulating ventricle system device of the present invention.

[Description of main component symbols]

1: Upper valve

2: Lower valve

3: Outer capsule

4: Inner water bladder

5: Pressure sensor

6: First pipeline

7: Second pipeline

8: External controller

detailed description

In order to further explain the technical means and effects of the utility model to achieve the intended purpose of the invention, the specific implementation, structure and characteristics of the in vitro simulated cerebroventricular system device proposed according to the utility model will be described below in conjunction with the accompanying drawings and preferred embodiments. and its efficacy are described in detail below.

Please refer to Fig. 1, an in vitro simulated ventricle system device of the present invention includes an outer capsule 3, an inner water capsule 4, a first pipeline 6, a second pipeline 7 and an external controller 8, and the inner water capsule 4 is arranged on the outer capsule 3 Inside, the inner wall of the outer bag 3 is provided with a pressure sensor 5; the first pipeline 6 passes through the outer bag 3 and communicates with the inner water bag 4 from above, and the upper valve 1 is installed on the first pipeline 6; the second The pipeline 7 passes through the outer bag 3 and communicates with the inner water bag 4 from below, and the lower valve 2 is installed on the second pipeline 7; the outer controller 8 is respectively connected to the upper valve 1, the lower valve 2 and the pressure sensor 5. The functions of each part are as follows:

a. The upper valve 1 is used to clamp the first pipeline 6 when necessary, so that the first pipeline 6 is closed;

b. The lower valve 2 is used to clamp the second pipeline 7 when necessary, so that the second pipeline 7 is closed;

c. The outer capsule 3 is made of rigid medical materials. When the inner water bag 4 is excessively inflated (the pressure of the patient's intracranial ventricular system is too high), the outer wall of the inner water bag 4 squeezes the pressure sensor 5 set on the inner wall of the outer bag 3 to generate an alarm signal and transmit it to the external controller 8;

d. The inner water bladder 4 is made of flexible medical materials, and is used to receive the cerebrospinal fluid drained by the first pipeline 6 through the upper valve 1, and the cerebrospinal fluid is in a relaxed state when it is emptied through the lower valve 2;

e. The pressure sensor 5 is located on the inner wall of the outer bag 3, and when the inner water bag 4 is overfilled, it is squeezed and generates an alarm signal;

f. The first pipeline 6, a flexible pipeline, is used for the collection of cerebrospinal fluid;

g. The second pipeline 7, a flexible pipeline, is used for the discharge of cerebrospinal fluid;

h. The external controller 8 is used to receive the alarm control signal from the pressure sensor 5 and to control the opening and closing of the upper valve 1 and the lower valve 2 at the same time.

The workflow of the in vitro simulated ventricle system device proposed by the utility model is as follows:

When the device is used for drainage of the cerebrospinal fluid of a patient, the first pipeline 6 is connected to the drainage tube of the patient's cerebrospinal fluid, and the second pipeline 7 is connected to the cerebrospinal fluid collector.

When working, the upper valve 1 is in the open state, at this time the first pipeline 6 is in the conduction state, the lower valve 2 is in the closed state, the second pipeline 7 is in the blocked state, the inner water bladder 4 is in the relaxed state, and the cerebrospinal fluid passes through the first pipeline 6 Enter the inner water bag 4.

Under normal working conditions, the doctor can set the cerebrospinal fluid emptying time in the internal water bag 4 through the external controller 8 according to the patient's condition. For example, the cerebrospinal fluid emptying time is set to 1 hour. After the device works for 1 hour, under the control of the external controller 8, the upper valve 1 is closed, and the first pipeline 6 is blocked by squeezing. The lower valve 2 is opened, the second pipeline 7 is connected, and the cerebrospinal fluid collected by the device flows into the cerebrospinal fluid collector through the second pipeline 7 . When the inner water bag 4 is emptied, the upper valve 1 is opened, the first pipeline 6 is connected, the lower valve 2 is closed, the second pipeline 7 is blocked, and a new round of cerebrospinal fluid collection begins.

When the patient's condition changes, the patient's intracranial pressure rises, and the cerebrospinal fluid flows out at an accelerated rate. When the cerebrospinal fluid emptying time set by the external controller 8 is not reached, the inner water bladder 4 is over-expanded and squeezes the pressure sensor 5 located on the inner wall of the outer bladder 3, resulting in The alarm signal is transmitted to the external controller 8. On the one hand, the lower valve 2 is urgently opened to discharge the cerebrospinal fluid through the second pipeline 7. On the one hand, an audible and visual alarm signal is sent to remind the medical staff to pay attention.

The above is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Improvements are all included in the scope of patent protection of the utility model in the same way.

Claims (4)

1. an in-vitro simulated ventricular system device, it is characterized in that: comprise external capsule (3), interior water pocket (4), the first pipeline (6), second pipe (7) and outer controller (8), this interior water pocket (4) is arranged in external capsule (3), and this external capsule (3) inwall is installed on pressure transducer (5); This first pipeline (6) one end is communicated with interior water pocket (4) from top through external capsule (3), and this first pipeline (6) is installed on valve (1); This second pipe (7) one end passes from below through external capsule (3) and is communicated with interior water pocket (4), and this second pipe (7) is installed on lower valve (2); This outer controller (8) connects valve (1), lower valve (2) and pressure transducer (5) respectively.

2. in-vitro simulated ventricular system device according to claim 1, is characterized in that: described external capsule (3) adopts rigidity medical material to make, and interior water pocket (4) adopts flexible biocompatible material to make.

3. in-vitro simulated ventricular system device according to claim 1, is characterized in that: described first pipeline (6), second pipe (7) are all flexible duct.

4. the in-vitro simulated ventricular system device according to claim 1 or 3, is characterized in that: described first pipeline (6) other end is connected with drainage of cerebrospinal fluid pipe, and second pipe (7) other end is connected with cerebrospinal fluid gatherer.