CN112546326A

CN112546326A - Self-balancing intracranial perfusion device

Info

Publication number: CN112546326A
Application number: CN202011421941.4A
Authority: CN
Inventors: 郭建; 黄梅英
Original assignee: First Affiliated Hospital of Shandong First Medical University
Current assignee: First Affiliated Hospital of Shandong First Medical University
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-03-26

Abstract

The utility model provides a self-balancing intracranial perfusion device, relate to medical lavage device field, include the notes liquid kettle through two liang of intercommunications of pipeline, irritate skirt and liquid storage pot, irritate the skirt and include that inner tube and cover establish the outer tube at inner tube outside, the shutoff of outer tube both ends forms the cavity, be equipped with the side opening of a plurality of intercommunication cavities on the outer tube anterior segment lateral wall, the cavity passes through pipeline intercommunication liquid storage pot, inner tube one end is passed through pipeline intercommunication notes liquid kettle, other end intercommunication cavity, effective intercommunication through each perfusion element, can sustainably, lavage the focus steadily, thereby self has pressure balance control effect to avoid local perfusate to gather, can remain stable drug concentration, system's during operation is airtight state has reduced the infection risk always in addition, reach the filling, the drainage is effectual, and is safe effective, the effect of using manpower sparingly.

Description

Self-balancing intracranial perfusion device

Technical Field

The present disclosure relates to the field of medical lavage devices, and more particularly, to a self-balancing intracranial perfusion device.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The drilling drainage operation aiming at certain intracranial pathological changes is one of the common operation modes of neurosurgery, and the operation has the advantages of being minimally invasive, convenient, effective and the like. The lesions mainly comprise intracerebral hematoma, brain abscess, intracerebral system hematocele or empyema and the like, and the treatment effect is improved by intermittently injecting medicaments into the lesions (or lesions) through a drainage tube for washing and treating in the past, for example, physiological saline containing antibiotics or other medicaments is used for washing an abscess cavity to promote inflammation to subside, and physiological saline containing urokinase and other medicaments is used for washing the hematoma cavity to promote hematoma to be liquefied and discharged.

The inventor finds that the current flushing operation needs medical staff to open a drainage tube system for multiple times, and during each flushing, even if the flushing operation is carried out by slowly injecting and sucking, large pressure fluctuation in a short time is still formed on a local focus, brain tissue damage is easily caused, the liquid medicine extravasation range is easily too large, even inflammatory liquid extravasates beyond an abscess cavity, and unnecessary adjacent brain tissue is damaged in a tired mode;

in addition, because it is interrupted artifical injection or wash, not only loaded down with trivial details consume the manpower many but also need be interrupted open drainage system and increased the infection risk, also can't keep local stable drug concentration and lavage pressure gradient, thereby it has reduced treatment to lead to lavage, drainage effect poor, is difficult to satisfy current demand to washing the treatment.

Disclosure of Invention

The utility model aims at the defects in the prior art, and provides an intracranial perfusion device of self-balancing formula, through the effective intercommunication of each perfusion element, can sustainably, steadily lavage the focus, thereby self has pressure balance control effect to avoid local perfusate to gather, can remain stable drug concentration, and the during operation of system is airtight state always in addition and has reduced the infection risk, reaches the effect of filling, drainage are effectual, safe effective, use manpower sparingly.

In order to realize the purpose, the following technical scheme is adopted:

the utility model provides an intracranial perfusion device of self-balancing, includes through two liang of notes liquid kettle, irritate the skirt and the liquid storage pot that communicate of pipeline, irritates the skirt and include that inner tube and cover establish the outer tube in the inner tube outside, the shutoff of outer tube both ends form the cavity, are equipped with the side opening of a plurality of intercommunication cavitys on the outer tube anterior segment lateral wall, and the cavity passes through pipeline intercommunication liquid storage pot, and inner tube one end is passed through pipeline intercommunication notes liquid kettle, other end intercommunication cavity.

Furthermore, the inner pipe and the outer pipe of the irrigation and drainage pipe are coaxially arranged, and one end, far away from the pipeline, of the inner pipe extends into the cavity.

Further, the inner tube is detachably matched with a needle core, and the needle core can enter the inner tube along the axial direction to seal the inner tube or be separated from the inner tube to open the inner tube.

Furthermore, the top of the liquid injection kettle is provided with a first liquid injection port and a first vent pipe port communicated with the liquid storage tank, and the bottom of the liquid injection kettle is provided with a first liquid outlet communicated with the inner pipe.

Further, a Murphy's dropper is installed on a pipeline between the first liquid outlet and the inner pipe, a first control valve is arranged between the Murphy's dropper and the liquid injection kettle, a second control valve is arranged between the Murphy's dropper and the liquid injection pipe, and a liquid injection valve is installed at the first liquid injection port.

Furthermore, a second liquid injection port communicated with the cavity and a second air vent pipe port communicated with the liquid injection kettle are arranged at the top of the liquid storage tank, and a second liquid outlet communicated with the liquid collection bag is arranged at the bottom of the liquid storage tank.

Furthermore, a third control valve is arranged on a pipeline of the second liquid injection port communicated with the cavity, and a fourth control valve is arranged on a pipeline of the liquid storage tank communicated with the liquid injection kettle.

Furthermore, a fifth control valve is arranged on a pipeline of the second liquid outlet communicated with the liquid collecting bag, and a sixth valve is arranged at the output end of the liquid collecting bag.

Further, the liquid storage pot is the cylindric structure that top end plate, bottom end plate and soft transparent material lateral wall enclose, is connected with the spring between top end plate and the bottom end plate in the liquid storage pot, and spring circumference laminating liquid storage pot lateral wall.

Furthermore, scales and up-and-down direction marks are respectively injected on the side walls of the liquid injection kettle and the liquid storage tank.

Compared with the prior art, the utility model has the advantages and positive effects that:

(1) through the effective communication of each perfusion element, the focus can be irrigated continuously and stably, pressure balance control action exists, so that local perfusion liquid is prevented from accumulating, stable medicine concentration can be kept, in addition, the system is always in a closed state during working, the infection risk is reduced, and the effects of good perfusion and drainage effects, safety, effectiveness and labor saving are achieved;

(2) the irrigation and drainage pipe is a coaxial double-layer pipe with a ditch communicated with the front end, plays a role in infusing liquid medicine and draining drainage liquid such as blood or pus, is placed into an intracranial space in the mode the same as that of a traditional drainage pipe, is fixed and bound, is connected after being placed into the irrigation and drainage pipe, does not need to be opened again, can realize the effects of infusing medicine flushing liquid and draining drainage liquid at the same time, and can achieve the effect of flushing and relieving obstruction caused by blood clots in the pipeline and the like by closing, opening valves at two sides of the Murphy's dropper in sequence and extruding the Murphy's dropper in sequence, thereby reducing the difficulty of maintaining the irrigation and drainage pipe, avoiding multiple openings in the use process of the traditional drainage pipe, reducing the infection risk and lightening the injury to patients;

(3) the liquid injection kettle, the irrigation guide pipe and the liquid storage tank are connected through three pipelines to form a closed type, the liquid injection kettle and the liquid storage tank are directly connected through a pipeline III to form equal air pressure, and pressure balance control is formed inside the liquid injection kettle and the liquid storage tank; can form more stable perfusion and flushing at intracranial focus, ensure good flushing effect, keep local stable drug concentration and lavage pressure gradient, and improve treatment effect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.

Fig. 1 is a schematic overall structure diagram of a perfusion device in

embodiments

1 and 2 of the present disclosure;

FIG. 2 is a schematic view of an appearance structure of a irrigation guiding pipe in

embodiments

1 and 2 of the present disclosure;

FIG. 3 is a schematic view of the internal structure of the irrigation guiding pipe in

embodiments

1 and 2 of the present disclosure;

FIG. 4 is a schematic structural view of a stylet in examples 1 and 2 of the present disclosure;

FIG. 5 is a schematic structural view of a liquid pouring kettle in

embodiments

1 and 2 of the present disclosure;

FIG. 6 is a schematic view showing the structure of a liquid reservoir tank in

embodiments

1 and 2 of the present disclosure;

FIG. 7 is a schematic sectional view of a reservoir tank according to

embodiments

1 and 2 of the present disclosure.

In the figure, A-1, a first liquid injection port, A-2, a first air vent pipe port, A-3, a first liquid outlet, B-1, an inner pipe interface, B-2, an outer pipe interface, C-1, a second liquid injection port, C-2, a second air vent pipe port, C-3, a second liquid outlet, D-1, a third liquid injection port, D-2 and a third liquid outlet.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "up", "down", "left" and "right" in this disclosure, if any, merely indicate that the directions of movement are consistent with those of the figures themselves, and are not limiting in structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present disclosure.

As introduced in the background art, in the prior art, intermittent manual medicine injection or flushing is not only tedious and labor-consuming, but also requires intermittent opening of the drainage system to increase the infection risk, and local stable medicine concentration and irrigation pressure gradient cannot be maintained, so that the irrigation and drainage effects are poor, and the treatment effect is reduced; in order to solve the problems, the disclosure provides a self-balancing intracranial perfusion device.

Example 1

In an exemplary embodiment of the present disclosure, as shown in fig. 1-7, a self-balancing intracranial perfusion apparatus is provided.

Mainly comprises a liquid injection pot, a perfusion lead pipe and a liquid storage pot, wherein as shown in figure 1, every two of the three are communicated through a pipeline to form a closed communication structure;

the pipeline adopts the pipeline of the transfusion system that current clinical medical treatment used can, and in order to discharge the liquid in the liquid storage tank for convenience, the drain pipe still communicates the collection liquid bag that has the scale through the pipeline, is equipped with the sixth valve on the lower part output of collection liquid bag.

The liquid injection kettle, the irrigation guide pipe and the liquid storage tank are connected through three pipelines to form a closed type, the liquid injection kettle and the liquid storage tank are directly connected through a pipeline III to form equal air pressure, and pressure balance control is formed inside the liquid injection kettle and the liquid storage tank;

can form more stable perfusion and flushing at intracranial focus, ensure good flushing effect, keep local stable drug concentration and lavage pressure gradient, and improve treatment effect.

For the structure of the liquid injection kettle, the top of the liquid injection kettle is provided with a first liquid injection port A-1 and a first vent pipe port A-2 communicated with the liquid storage tank, and the bottom of the liquid injection kettle is provided with a first liquid outlet A-3 communicated with the inner pipe;

install first control valve, Murphy's dropper and second control valve on the pipeline between first liquid outlet and the inner tube in proper order, the liquid injection valve is installed to first notes liquid mouth.

Specifically, the liquid injection pot is made of hard shell transparent plastic materials, and is provided with three openings, the upper part of the liquid injection pot is two, the first one is a liquid injection valve for injecting liquid and/or medicine, and a tee joint and an airtight nut are arranged on the liquid injection valve;

the second is an upper ventilating pipe orifice, and the third is a lower liquid outlet;

the wall of the kettle body is provided with scales to mark the amount of liquid in the kettle.

For the irrigation and drainage pipe structure, the irrigation and drainage pipe comprises an inner pipe and an outer pipe sleeved outside the inner pipe, two ends of the outer pipe are plugged to form a cavity, the side wall of the front section of the outer pipe is provided with a plurality of side holes communicated with the cavity, the cavity is communicated with a liquid storage tank through a pipeline, one end of the inner pipe is communicated with a liquid injection kettle through a pipeline, and the other end of the inner pipe is communicated with;

the side wall of the front section of the outer tube is provided with a plurality of side holes, so that the contact area of liquid and a target region can be increased, the liquid exchange region is increased, and the liquid exchange chance is increased;

as shown in FIG. 2, the plurality of lateral holes are circumferentially arranged along the outer tube and are distributed at different axial positions.

The inner pipe and the outer pipe of the irrigation and drainage pipe are coaxially arranged, one end of the inner pipe is combined with the pipeline through an inner pipe interface B-1 and is communicated with a first liquid outlet of the liquid injection kettle through the pipeline, and the other end of the inner pipe extends into the cavity;

the outer pipe is communicated with the liquid storage tank through an outer pipe joint B-2 and a pipeline II, and drainage liquid generated after washing is discharged into the liquid storage tank.

The inner tube is detachably matched with a needle core, and the needle core can enter the inner tube along the axial direction to seal the inner tube or separate from the inner tube to open the inner tube;

it can be understood that the needle core plays the same guiding role in the process of placing the perfusion guide tube into the intracranial space as the needle core used by the traditional craniocerebral drainage tube.

In this embodiment, as shown in fig. 2-3, the irrigation and drainage tube is a coaxial double-lumen tube, the lumen of the inner tube is directly connected to the end nozzle of the drainage tube and can match with the needle core, and a plurality of side holes are arranged on the front wall of the lumen of the outer sleeve.

The outer tube is provided with a plurality of side holes as a discharge port of flushing liquid and a leading-out inlet of the flushed liquid, when the flushing work is carried out, the perfusion liquid flows into the outer cavity and flows and permeates and exchanges with a hematoma cavity and a pus cavity through the side holes in the flowing process, the blood and pus liquid flows and the like into the outer cavity, the perfusion liquid in the inner cavity continuously flows in, the drainage liquid mixed with the blood and the pus in the outer cavity is discharged into the liquid storage tank without cutoff under the action of the perfusion pressure, and the drainage liquid is discharged into the liquid storage tank through the outer tube interface.

Irritate the stand pipe and be coaxial front end ditch expert double-layer tube, play and irritate the liquid medicine and the effect of drainage liquid such as drainage play mix with blood or pus, only need the single trompil can realize simultaneously irritating the effect of liquid medicine and drainage discharge drainage liquid when pouring the stand pipe in putting into, alleviateed the injury to patient.

For the liquid storage tank, a second liquid injection port C-1 communicated with the cavity and a second vent pipe port C-2 communicated with the liquid injection kettle are arranged at the top of the liquid storage tank, and a second liquid outlet C-3 communicated with the liquid collection bag is arranged at the bottom of the liquid storage tank;

a third control valve is arranged on a pipeline of the second liquid injection port communicated with the cavity, and a fourth control valve is arranged on a pipeline of the liquid storage tank communicated with the liquid injection kettle.

Specifically, for the structure of the liquid storage tank, the liquid storage tank is a cylindrical structure formed by enclosing a top end plate, a bottom end plate and a soft transparent material side wall, a spring is connected between the top end plate and the bottom end plate in the liquid storage tank, and the spring is attached to the side wall of the liquid storage tank in the circumferential direction;

as shown in fig. 6-7, the liquid storage tank is cylindrical, the upper wall and the lower wall are made of hard materials, the side wall is made of soft transparent plastics, and an adherence spring support is arranged in the liquid storage tank. There are three openings, two above, the first is C-1 for injection of the injection liquid. The second is an upper ventilating pipe orifice C-2, and the third is a lower liquid outlet C-3. The wall of the tank is provided with scales to mark the amount of liquid in the tank and the up-down direction marks.

The liquid collecting bag is a common drainage bag and is communicated with a second liquid outlet of the liquid storage tank through a third liquid injection port D-1, and a third liquid outlet D-2 below the liquid collecting bag is connected with a fifth control valve.

For the piping arrangement between the various elements, as shown in fig. 1, there are four pipes:

the first pipeline is used for connecting a liquid outlet A-3 of the liquid injection kettle with a pouring guide pipe opening B-1, a Murphy's dropper is arranged on the first pipeline, a first control valve is arranged on the upstream of the Murphy's dropper, and a second control valve is arranged on the downstream of the Murphy's dropper. The upper end of one pipeline is connected with A-3 in a pre-fixed mode, and the lower end opening is connected with B-1 in an operation.

The pipeline is used for connecting the irrigation and drainage pipe opening B-2 with the liquid inlet C-1 of the liquid storage pot, and a control valve is arranged on the pipeline. The C-1 end of the second pipeline is in pre-fixed connection, and the B-2 end of the second pipeline is connected in operation.

The third pipeline is connected with the port A-2 of the liquid injection kettle and the port C-2 of the liquid storage tank. A control valve is arranged on the pipeline III, and two ports of the pipeline III are both in pre-fixed connection.

The fourth pipeline is connected with a liquid storage tank outlet C-3 and a liquid collection bag upper opening D-1, and a control valve is arranged on the fourth pipeline. And two ports of the pipeline four are fixedly connected in advance.

The lower opening D-2 of the liquid collecting bag is provided with a control valve.

The working principle of the intracranial perfusion device in the embodiment is described with reference to the accompanying drawings:

1. the perfusion tube is a coaxial double-layer tube with a ditch at the front end, and plays a role in perfusing liquid medicine and draining drainage liquid such as mixed blood or pus. The near end of the inner tube is connected with the liquid injection pot through a port B-1, a port A-3 of the pipeline, the liquid medicine flows out through the hole at the far end of the inner tube and is acted with the focus (including a hematoma cavity or an abscess cavity) through the side hole of the outer tube to form mixed liquid containing blood or abscess. The liquid flows upwards along the outer cavity under the push of the pressure difference between the liquid injection pressure and the drainage pressure, and enters the liquid storage tank through a B-2 port of the irrigation drainage pipe, a second pipeline port and a C-1 port.

2. Pressure balance function: the liquid injection kettle and the liquid storage tank are connected through three pipelines to form a closed type, the liquid injection kettle and the liquid storage tank are directly connected through the three pipelines to have equal air pressure, pressure balance control is formed inside the liquid injection kettle and the liquid storage tank, and if the amount of liquid flowing into the intracranial of a patient through the liquid injection kettle is more than the amount of liquid flowing out of the liquid injection kettle and into the liquid storage tank, the liquid injection speed is reduced due to the negative pressure effect generated by the reduction of the air pressure in the liquid injection; if the amount of liquid flowing into the liquid storage tank through the pipeline II is large, the air pressure in the liquid storage tank and the liquid injection kettle rises, so that the liquid flowing out of the liquid injection kettle is increased, and stable injection and flushing can be formed at the intracranial focus as a result, and damage such as intracranial pressure rise, diffusion and extravasation of the injection liquid and the like caused by the accumulation of the injection liquid cannot be caused.

In the process of lavage preparation, prepared liquid medicine is injected into the liquid injection kettle through A-1, a valve on a pipeline III is closed to prevent liquid from entering the pipeline III during liquid injection, the lower end of the pipeline I is lifted to exhaust air, the air in the pipeline below the Murphy's capsule dropper is emptied, and the valve on the pipeline I is closed and an opening A-1 is sealed after liquid injection is finished.

3. And checking a valve C-3 of the liquid storage tank, placing the valve in a closed state, and loosening the valve on the pipeline II to enable the gas to enter the tank body to be expanded.

4. Connecting pipelines: the first pipeline is connected with the B-1, and the second pipeline is connected with the B-2. The pipeline connection and the liquid injection kettle are carried out in an operating room in a sterile operation mode. The liquid filling kettle also requires aseptic operation when liquid needs to be supplemented.

5. The device is hung on a hanging rod after returning to a ward, the height of a liquid injection kettle (namely the height difference of the liquid injection kettle relative to the head of a patient) is roughly estimated according to the puncture drainage condition in the operation, the liquid level of the lower part of a Murphy's dropper with the general initial height is about 20cm higher than the center of the head of the patient (the midpoint position of a connecting line of external auditory canals on two sides can be used as the center of the head), and the height is required to be adjusted according to the actual pressure of the focus area of the patient under the specific condition. The liquid storage tank is positioned below the lowest point of the head of the flat patient.

6. And opening the valves on the second and third pipelines, slowly opening the valve on the first pipeline, observing the dropping speed through the Murphy's dropper, and observing the dropping speed entering the liquid storage tank through the C-1. If the blood clot blocks the pipeline, the valve on the first pipeline can be opened and closed in sequence to simultaneously extrude the Murphy's dropper to flush without opening the pipeline to flush.

The valves on the various lines can be temporarily closed by the patient for an out-of-the-way examination.

Example 2

In another exemplary embodiment of the present disclosure, as shown in fig. 1-7, a method of operating a self-balancing intracranial perfusion apparatus as described in example 1 is provided.

The method comprises the following steps:

1. the pore drill skull is placed into the perfusion and guide tube, the position is adjusted to withdraw the needle core, and the two openings B-1 and B-2 are temporarily sealed by the tube cap. Aseptically binding and fixing the irrigation and drainage pipe.

2. In the process of lavage preparation, prepared liquid medicine is injected into the liquid injection kettle through A-1, a valve on a pipeline III is closed to prevent liquid from entering the pipeline III during liquid injection, the lower end of the pipeline I is lifted to exhaust air, the air in the pipeline below the Murphy's capsule dropper is emptied, and the valve on the pipeline I is closed and an opening A-1 is sealed after liquid injection is finished.

6. And opening the valves on the second and third pipelines, slowly opening the valve on the first pipeline, observing the dropping speed through the Murphy's dropper, and observing the dropping speed entering the liquid storage tank through the C-1. The valves on the various lines can be temporarily closed by the patient for an out-of-the-way examination.

Through the effective intercommunication of each perfusion element, can sustainably, steadily lavage the focus, thereby self has pressure balance control effect to avoid local perfusate to gather, can remain stable drug concentration, the during operation of system is airtight state always in addition and has reduced the infection risk, reaches the effect of filling, drainage are effectual, safe effective, use manpower sparingly.

The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. The self-balancing intracranial perfusion device is characterized by comprising a perfusion kettle, a perfusion guide pipe and a liquid storage tank which are communicated with each other in pairs through pipelines, wherein the perfusion guide pipe comprises an inner pipe and an outer pipe sleeved outside the inner pipe, two ends of the outer pipe are plugged to form a cavity, a plurality of side holes communicated with the cavity are formed in the side wall of the front section of the outer pipe, the cavity is communicated with the liquid storage tank through the pipeline, one end of the inner pipe is communicated with the perfusion kettle through the pipeline, and the other end of the inner pipe.

2. The self-balancing intracranial perfusion apparatus as recited in claim 1, wherein the inner tube and the outer tube of the irrigation tube are coaxially disposed, and an end of the inner tube remote from the tube extends into the cavity.

3. The self-balancing intracranial perfusion apparatus as recited in claim 1, wherein the inner tube is detachably engaged with a stylet, and the stylet can be axially inserted into the inner tube to close the inner tube or removed from the inner tube to open the inner tube.

4. The self-balancing intracranial perfusion apparatus as recited in claim 1, wherein the liquid-filling pot has a first liquid-filling opening at the top and a first vent opening communicating with the liquid-storing pot, and a first liquid-outlet opening communicating with the inner tube at the bottom.

5. The self-balancing intracranial perfusion apparatus as recited in claim 4, wherein the tube between the first liquid outlet and the inner tube is provided with a Murphy's dropper, a first control valve is arranged between the Murphy's dropper and the liquid injection pot, a second control valve is arranged between the Murphy's dropper and the liquid injection tube, and the first liquid injection port is provided with a liquid injection valve.

6. The self-balancing intracranial perfusion apparatus as recited in claim 1, wherein the liquid storage tank has a second liquid inlet connected to the chamber and a second air inlet connected to the liquid kettle at the top, and a second liquid outlet connected to the liquid collection bag at the bottom.

7. The self-balancing intracranial perfusion apparatus as recited in claim 6, wherein the second fluid inlet is connected to the chamber via a pipe having a third control valve, and the fluid reservoir is connected to the fluid-filling pot via a pipe having a fourth control valve.

8. The self-balancing intracranial perfusion apparatus as recited in claim 6 or 7, wherein the second outlet is connected to the liquid-collecting bag via a pipeline having a fifth control valve, and the liquid-collecting bag has a sixth valve at its output end.

9. The self-balancing intracranial perfusion device as recited in claim 1, wherein the fluid reservoir is a cylindrical structure defined by a top end plate, a bottom end plate, and a soft transparent sidewall, and a spring is connected between the top end plate and the bottom end plate in the fluid reservoir and circumferentially attached to the sidewall of the fluid reservoir.

10. The self-balancing intracranial perfusion apparatus as recited in claim 1, wherein the side walls of the fluid-injecting pot and the fluid-storing pot are respectively provided with scales and upper and lower direction marks.