CN107281562A - Adjusting means and drainage of cerebrospinal fluid system in a kind of drainage of cerebrospinal fluid system - Google Patents
Adjusting means and drainage of cerebrospinal fluid system in a kind of drainage of cerebrospinal fluid system Download PDFInfo
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- CN107281562A CN107281562A CN201710437621.XA CN201710437621A CN107281562A CN 107281562 A CN107281562 A CN 107281562A CN 201710437621 A CN201710437621 A CN 201710437621A CN 107281562 A CN107281562 A CN 107281562A
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- 210000001175 cerebrospinal fluid Anatomy 0.000 title claims abstract description 94
- 238000009434 installation Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 66
- 239000004973 liquid crystal related substance Substances 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 238000007917 intracranial administration Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 11
- 230000008859 change Effects 0.000 abstract description 9
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 238000010992 reflux Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 14
- 230000002861 ventricular Effects 0.000 description 7
- 230000000474 nursing effect Effects 0.000 description 5
- 230000002411 adverse Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 210000004556 brain Anatomy 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 210000003703 cisterna magna Anatomy 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 206010011224 Cough Diseases 0.000 description 1
- 230000005483 Hooke's law Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012279 drainage procedure Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007363 regulatory process Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- A61M1/0023—
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/73—Suction drainage systems comprising sensors or indicators for physical values
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/74—Suction control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
- A61M2202/0464—Cerebrospinal fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/06—Head
- A61M2210/0693—Brain, cerebrum
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
Abstract
The embodiments of the invention provide the adjusting means in a kind of drainage of cerebrospinal fluid system and drainage of cerebrospinal fluid system.The device includes：Upper lid, base, current limliting seat, anti-siphon spheroid, support member and spring leaf.Upper lid is fastened to form hollow structure with base, and current limliting seat is fixed in hollow structure, and annular seal space is formed in current limliting seat；Anti-siphon spheroid is located in annular seal space and is positioned in sphere installation hole, and anti-siphon spheroid is used to block spheroid mounting hole；Support member is located in annular seal space and is installed in support member mounting hole, and support member top has supporting table；Spring leaf is located in annular seal space, and the first end of spring leaf is overlapped in anti-siphon spheroid, and the second end is overlapped in supporting table, and centre has installation portion, and spring leaf bearing is carried out spacing by installation portion to spring leaf.This programme solves the drainage overscale problems that the control and regulation of pressure and drainage speed, reflux problem and intracranial pressure rapid change zone come during drainage of cerebrospinal fluid, while facilitating the care operation in drainage process.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an adjusting device in a cerebrospinal fluid drainage system and the cerebrospinal fluid drainage system.
Background
In the medical field, cerebrospinal fluid drainage (which may be specifically extracerebral drainage or external lumbar cistern drainage) is a very common and effective treatment means for neurosurgical clinical treatment, and generally requires a cerebrospinal fluid drainage system. Taking the example of a cerebrospinal fluid drainage system for an extra-ventricular drainage procedure, it generally comprises: the drainage bag is communicated with the ventricle of the patient through the drainage tube, and cerebrospinal fluid in the ventricle of the patient can enter the drainage bag through the drainage tube. The cerebrospinal fluid drainage system clinically applied to the ventricular external drainage at present has the following obvious defects: cerebrospinal fluid is caused to flow back to the ventricles of the brains of patients from the drainage bags due to various reasons, and the ventricles of the brains of the patients are easy to be infected; when carrying out the ventricular external drainage art, generally need adjust the height of drainage bag through artificial mode to control drainage speed, the nursing work load is big and the operation degree of difficulty is high. Drainage systems used in external lumbar cistern drainage also suffer from the above problems during use.
Disclosure of Invention
The embodiment of the invention aims to provide a regulating device in a cerebrospinal fluid drainage system and the cerebrospinal fluid drainage system, so as to solve the problem of backflow of cerebrospinal fluid and simplify nursing operation. The specific technical scheme is as follows:
the embodiment of the invention provides a regulating device in a cerebrospinal fluid drainage system, which comprises: the upper cover, the base, the flow limiting seat, the anti-siphon ball, the supporting piece and the spring piece; wherein,
the upper cover and the base are buckled to form a hollow structure, the flow limiting base is fixed in the hollow structure, and the bottom surface of the upper cover blocks the opening of the flow limiting base, so that a sealed cavity is formed in the flow limiting base;
the top surface of the flow limiting seat is provided with a ball mounting hole, a spring piece support, a support mounting hole and a first liquid outlet, the side wall of the flow limiting seat is provided with a first liquid inlet and a second liquid outlet, the spring piece support is positioned between the ball mounting hole and the support mounting hole, the ball mounting hole is communicated with the first liquid inlet, the first liquid inlet is also communicated with a second liquid inlet arranged on the upper cover and/or the base, the first liquid outlet is communicated with the second liquid outlet, and the second liquid outlet is also communicated with a third liquid outlet arranged on the upper cover and/or the base;
the anti-siphon ball body is positioned in the sealed cavity and is placed in the ball body mounting hole, and the anti-siphon ball body is used for plugging the ball body mounting hole;
the supporting piece is positioned in the sealing cavity and is arranged in the supporting piece mounting hole, and a supporting table is arranged at the top end of the supporting piece;
the spring leaf is located in the seal chamber, the first end overlap joint of spring leaf in anti siphon spheroid, the second end overlap joint of spring leaf in the brace table, and, the centre of spring leaf has the installation department, the spring leaf support passes through the installation department is right the spring leaf is spacing.
Optionally, the surface of the ball mounting hole, which is matched with the anti-siphon ball, is a conical surface or a spherical surface.
Optionally, the support platform is a step-shaped platform that spirals up, and the second end of the spring plate is adjusted to press against different heights of the step-shaped platform.
Optionally, the support comprises: a first cylindrical structure and a hollow second cylindrical structure; wherein,
the second cylinder structure is rotatably installed in the supporting piece installation hole, the first cylinder structure is fixedly connected and sleeved in the second cylinder structure, an adjusting part is arranged at the bottom of the first cylinder structure, and an operation hole is formed in the base corresponding to the adjusting part;
the step-shaped platform is arranged at the top end of the second cylindrical structure, and the end surface of the second end of the spring piece abuts against the side wall of the first cylindrical structure.
Optionally, the spring piece is provided with a through hole, and the mounting part is a connecting plate arranged at the edge of the through hole in an overturning manner;
the top end of the spring piece support is provided with a connecting hole, and the connecting plate can be inserted into the connecting hole in a sliding manner.
Optionally, the mounting part is a flange arranged along the edge of the spring piece;
the top end of the spring piece support is provided with a connecting hole, and the flanging is inserted in the connecting hole in a sliding manner.
Optionally, the adjusting device further comprises: a drainage seat and an elastic membrane; wherein,
a third liquid inlet is formed in the side wall of the flow limiting seat;
the drainage seat is arranged in the hollow structure and is positioned outside the sealed cavity;
the drainage seat is internally provided with a first pipeline and a second pipeline, the first end of the first pipeline is communicated with the second liquid inlet, the middle part of the first pipeline is communicated with the first end of the second pipeline, the second end of the first pipeline is communicated with the third liquid inlet, and the second end of the second pipeline is communicated with the first liquid inlet;
the elastic diaphragm is positioned in the sealing cavity and blocks the third liquid inlet, the elastic diaphragm is abutted against the anti-siphon ball body, and acting force towards the direction of the ball body mounting hole is applied to the anti-siphon ball body in a deformation state by the elastic diaphragm.
Optionally, the adjusting device further comprises: the device comprises a pressure sensor, a controller and a liquid crystal display screen; wherein,
the pressure sensor and the controller are both arranged in the hollow structure and positioned outside the sealing cavity, and the liquid crystal display screen is embedded on the top surface of the upper cover;
the pressure sensor detects the pressure of the liquid flowing through the second pipeline and sends the detected pressure to the controller;
the controller reads the pressure from the pressure sensor and sends the read pressure to the liquid crystal display screen;
and the liquid crystal display screen displays the received pressure.
Optionally, the adjusting device further comprises: a limit baffle; wherein the limit baffle limits the maximum displacement of the anti-siphon ball body relative to the ball body mounting hole.
The embodiment of the invention also provides a cerebrospinal fluid drainage system, which comprises: a drainage bag and an adjusting device in the cerebrospinal fluid drainage system; wherein,
a second liquid inlet in the adjusting device is communicated with a ventricle or a lumbar cisterna of a patient through a first drainage tube, and a third liquid outlet in the adjusting device is communicated with the drainage bag through a second drainage tube. In this scheme, no matter under what kind of circumstances, the cerebrospinal fluid all only probably flows out from patient's internal, and pass through first drainage tube in proper order, adjusting device and second drainage tube get into in the drainage bag, perhaps the cerebrospinal fluid just can not get into sealed intracavity, it can not flow backward to first drainage tube from adjusting device and flow back to patient internal never, the cerebrospinal fluid can only one-way flow promptly, so the adverse current problem of cerebrospinal fluid has been solved betterly to this scheme, thereby the ventricles of brain system infection that arouses because the adverse current of cerebrospinal fluid has been avoided, and then patient's life safety has been protected reliably.
In addition, it should be noted that, under the condition that the pressure of the cerebrospinal fluid flowing to the first inlet is greater than the pressure applied to the anti-siphon ball by the first end of the spring plate, if the difference value between the two pressures is larger, the lifted height of the anti-siphon ball, that is, the displacement of the anti-siphon ball relative to the ball mounting hole, is larger, and accordingly, the flow rate of the cerebrospinal fluid entering the sealed cavity from the first inlet is faster. Conversely, the smaller the difference between the two pressures, the smaller the height at which the anti-siphon ball is lifted, i.e., the displacement of the anti-siphon ball relative to the ball mounting hole, and accordingly, the slower the flow rate of cerebrospinal fluid from the first inlet into the sealed chamber. That is, the regulating device itself can regulate the drainage rate according to the pressure of the cerebrospinal fluid flowing to the first inlet, and this regulating process does not require manual intervention.
It is thus clear that this scheme has solved control and regulation, the excessive problem of drainage that the rapid change of intracranial pressure brought of cerebrospinal fluid drainage in-process pressure and drainage speed effectively, adverse current problem and intracranial pressure, has made things convenient for the nursing operation of drainage in-process simultaneously, and this scheme can also show the intracranial pressure of patient in real time through liquid crystal display.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is an assembly view of an adjustment device in a cerebrospinal fluid drainage system provided by an embodiment of the present invention;
FIG. 2 is a semi-sectional view of an adjustment device in a cerebrospinal fluid drainage system provided by an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an adjustment device in a cerebrospinal fluid drainage system according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a flow limiting seat in an adjusting device in a cerebrospinal fluid drainage system according to an embodiment of the present invention.
The correspondence between the names of the various components in fig. 1 to 4 and the corresponding reference numerals is:
1, covering the cover; 2, a base; 3, a current limiting seat; 31 sphere mounting holes; 32 spring plate supports; 33 a support mounting hole; 34 a first exit port; 35 a first liquid inlet; 4 anti-siphon ball body; 5 a support member; 51, supporting a table; 52 a first cylindrical structure; 53 a second cylindrical structure; 54 an adjusting part; 6 spring leaves; 61, a mounting part; 7 a first interface; 8, a drainage seat; 81 a first conduit; 82 a second conduit; 9 an elastic membrane; 10 a pressure sensor; 11 a controller; 12 a liquid crystal display screen; 100, a hollow structure; 200 seal the cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problems in the prior art, the embodiment of the invention provides a regulating device in a cerebrospinal fluid drainage system and the cerebrospinal fluid drainage system.
It should be noted that the cerebrospinal fluid drainage system can be applied to both ventricular external drainage and lumbar cisterna external drainage. Generally, the working principle of the cerebrospinal fluid drainage system is similar in the ventricular drainage and the lumbar cistern drainage, and therefore, the following embodiments are described by taking the case that the cerebrospinal fluid drainage system is applied to the ventricular drainage as an example.
The following first describes an adjustment device in a cerebrospinal fluid drainage system according to an embodiment of the present invention.
Referring to fig. 1 to 3, schematic structural diagrams of an adjusting device in a cerebrospinal fluid drainage system according to an embodiment of the present invention are shown. As shown in fig. 1 to 3, the adjusting device includes: the device comprises an upper cover 1, a base 2, a flow limiting seat 3, an anti-siphon ball 4, a support 5 and a spring piece 6.
The upper cover 1 and the base 2 are buckled to form a hollow structure 100, the flow limiting seat 3 is fixed in the hollow structure 100, and the bottom surface of the upper cover 1 blocks the opening of the flow limiting seat 3, so that a sealed cavity 200 is formed in the flow limiting seat 3.
Specifically, the upper cover 1 may be made of a plastic material to reduce the weight and production cost of the upper cover 1, and the upper cover 1 and the base 2 may be connected by gluing. Of course, the upper cover 1 may be made of other light materials, and the upper cover 1 and the base 2 may be connected in other possible manners. In addition, the flow restriction seat 3 may be fixed to any one of the upper cover 1 and the base 2, and it is only necessary to ensure that the opening of the flow restriction seat 3 is blocked by the upper cover 1, so that the inside of the flow restriction seat 3 can form the sealed cavity 200.
As shown in fig. 2 to 4, the top surface of the flow limiting seat 3 is provided with a sphere mounting hole 31, a spring plate support 32, a support mounting hole 33 and a first liquid outlet 34, the side wall of the flow limiting seat 3 is provided with a first liquid inlet 35 and a second liquid outlet (not shown in the figure due to the shielding of the first socket 7), the spring plate support 32 is located between the sphere mounting hole 31 and the support mounting hole 33, the sphere mounting hole 31 is communicated with the first liquid inlet 35, the first liquid inlet 35 is further communicated with a second liquid inlet (not shown in the figure) provided in the upper cover 1 and/or the base 2, the first liquid outlet 34 is communicated with the second liquid outlet, and the second liquid outlet is further communicated with a third liquid outlet (not shown in the figure due to the shielding of the first socket 7) provided in the upper cover 1 and/or the base 2.
It is easy to see that the first outlet 34, the second outlet and the third outlet are connected in sequence via the first port 7.
The anti-siphon ball 4 is located in the sealed cavity 200 and placed in the ball mounting hole 31, and the anti-siphon ball 4 is used for plugging the ball mounting hole 31.
The anti-siphon ball 4 may be a glass ball, and of course, the anti-siphon ball 4 may also be a ball made of other materials.
In order to block the anti-siphon ball 4 from the ball mounting hole 31, the surface of the ball mounting hole 31 that is engaged with the anti-siphon ball 4 may be a tapered surface or a spherical surface.
The support 5 is located in the seal chamber 200 and is installed in the support installation hole 33, and the support platform 51 is provided on the top end of the support 5.
The spring plate 6 is located in the sealed chamber 200, a first end (left end shown in fig. 1) of the spring plate 6 is lapped on the anti-siphon ball 4, a second end (right end shown in fig. 1) of the spring plate 6 is lapped on the support table 5, and the spring plate 6 has a mounting part 61 in the middle, and the spring plate support 32 limits the spring plate 6 through the mounting part 61.
It should be noted that the spring plate support 32 has various specific implementation forms for limiting the spring plate 6 through the mounting portion 61, and for clarity of layout, examples are described later.
It will be readily appreciated that since the first end of the spring plate 6 is lapped over the anti-siphon ball 4, the first end of the spring plate 6 applies a force to the anti-siphon ball 4. In order to securely overlap the first end of the spring plate 6 with the anti-siphon ball 4, the first end of the spring plate 6 may be bonded with the anti-siphon ball 4.
To the adjusting device among the cerebrospinal fluid drainage system that this scheme provided, when actual installation, can be fixed in patient's head through fixed subassembly with this adjusting device, then make the second inlet be linked together through first drainage tube and patient's ventricle, make the third outlet be linked together through second drainage tube and drainage bag simultaneously.
When the drainage system provided with the adjusting device provided by the scheme is adopted to implement the ventricular external drainage, cerebrospinal fluid flowing out of the intracranial of a patient flows to the second liquid inlet through the first drainage tube, and successfully enters the hollow structure 100 from the second liquid inlet. The cerebrospinal fluid then flows to the first loading port 35 which is in communication with the second loading port.
If the intracranial pressure value of the patient is not too high, then, the pressure of the cerebrospinal fluid flowing to the first fluid inlet 35 is generally not higher than the pressure applied to the anti-siphon ball 4 by the first end of the spring piece 6, at this time, the anti-siphon ball 4 is at a position capable of completely blocking the ball mounting hole 31, accordingly, the cerebrospinal fluid flowing to the first fluid inlet 35 cannot enter the sealed cavity 200 through the ball mounting hole 31, and the cerebrospinal fluid in the sealed cavity 200 cannot flow back to the first fluid inlet 35 through the ball mounting hole 31.
When the intracranial pressure of the patient is suddenly increased due to the body position change, cough, force application and the like, the pressure of the cerebrospinal fluid flowing to the first fluid inlet 35 is generally higher than the pressure applied to the anti-siphon ball 4 by the first end of the spring piece 6, at this time, the anti-siphon ball 4 is lifted under the resultant force of the two forces, that is, the anti-siphon ball 4 generates a certain displacement relative to the ball mounting hole 31, the anti-siphon ball 4 cannot be continuously located at a position capable of completely blocking the ball mounting hole 31, and accordingly, the cerebrospinal fluid flowing to the first fluid inlet 35 enters the sealed cavity 200 through the ball mounting hole 31. Then, after the cerebrospinal fluid entering the sealed cavity 200 flows to the first liquid outlet 34, it flows out from the sealed cavity 200 after passing through the second liquid outlet and the third liquid outlet in sequence, and then the cerebrospinal fluid flowing out from the hollow structure 100 enters the drainage bag through the second drainage tube and is collected.
It is easy to see that under any condition, the cerebrospinal fluid can only flow out of the patient from the intracranial part and enters the drainage bag through the first drainage tube, the adjusting device and the second drainage tube in sequence, or the cerebrospinal fluid cannot enter the sealed cavity 200 at all, and the cerebrospinal fluid can never flow back to the first drainage tube from the adjusting device and flow back to the intracranial part of the patient, namely the cerebrospinal fluid can only flow in one direction, so that the scheme better solves the problem of the backflow of the cerebrospinal fluid, avoids the ventricle of the patient from being infected due to the backflow of the cerebrospinal fluid, and reliably protects the life safety of the patient.
In addition, it should be noted that in the case that the pressure of the cerebrospinal fluid flowing to the first loading port 35 is greater than the pressure applied to the anti-siphon ball 4 by the first end of the spring piece 6, the greater the difference between the two pressures, the greater the height at which the anti-siphon ball 4 is lifted, i.e., the greater the displacement of the anti-siphon ball 4 relative to the ball mounting hole 31, and accordingly, the faster the flow rate of the cerebrospinal fluid entering the sealed chamber 200 from the first loading port 35. Conversely, the smaller the difference between the above two pressures, the smaller the height at which the anti-siphon ball 4 is lifted, i.e., the displacement of the anti-siphon ball 4 with respect to the ball mounting hole 31, and accordingly, the slower the flow rate of the cerebrospinal fluid from the first fluid inlet 35 into the sealed chamber 200. That is, the regulating means itself can regulate the drainage rate according to the pressure of the cerebrospinal fluid flowing to the first fluid inlet 35, without manual intervention.
Therefore, the scheme better solves the problem of the reverse flow which is easy to appear in the drainage process, and simultaneously greatly simplifies the nursing operation in the drainage process.
In the above embodiment, as shown in fig. 2 and 3, the support platform 51 may be a step-shaped platform that is spirally raised, and the second end of the spring plate 6 is adjusted to press against different heights of the step-shaped platform.
It will be appreciated that the pressure exerted by the first end of the spring plate 6 on the anti-siphon ball 4 is different when the second end of the spring plate 6 is pressed against the stepped platform at different heights.
Specifically, if the height of the second end of the spring plate 6 pressing against the stepped platform is higher, the pressure applied by the first end of the spring plate 6 on the anti-siphon ball 4 is higher; conversely, the less pressure the first end of the spring leaf 6 exerts on the anti-siphon ball 4. For example, if the anti-siphon ball 4 is currently located at a position that cannot completely block the ball mounting hole 31, the pressure applied to the anti-siphon ball 4 by the first end of the spring plate 6 increases gradually as the height of the second end of the spring plate 6 abutting against the step-shaped platform increases, and the height of the anti-siphon ball 4 lifted up gradually decreases, so the flow rate of the cerebrospinal fluid flowing into the sealed chamber 200 decreases gradually; when the pressure applied to the anti-siphon ball 4 by the first end of the spring plate 6 increases to a certain threshold value, the anti-siphon ball 4 will return to a position where it can completely block the anti-siphon ball 4, and at this time, cerebrospinal fluid will not enter the sealed chamber 200 at all.
It can be seen that the pressure applied to the anti-siphon ball 4 by the first end of the spring piece 6 can be conveniently and effectively adjusted by pressing the second end of the adjusting spring piece 6 against different heights of the step-shaped platform, so that the control and adjustment of the pressure and the drainage speed in the cerebrospinal fluid drainage process can be conveniently realized.
It should be noted that the structural form of the supporting member 5 is various, and one of the structural forms is described below with reference to fig. 2 and 3.
As shown in fig. 2 and 3, the support 5 may include: a first cylindrical structure 52 and a hollow second cylindrical structure 53. Wherein the second cylindrical structure 53 is rotatably mounted in the support mounting hole 33, i.e. the outer wall of the second cylindrical structure 53 is engaged with the inner wall of the support mounting hole 33. The first cylindrical structure 52 is fixedly connected and sleeved in the second cylindrical structure 53, an adjusting portion 54 shown in fig. 2 is disposed at the bottom of the first cylindrical structure 52, and the base 2 is provided with an operation hole 21 shown in fig. 2 corresponding to the adjusting portion 54.
The first cylindrical structure 52 and the second cylindrical structure 53 may be welded, and of course, the first cylindrical structure 52 and the second cylindrical structure 53 may also be integrally formed or connected by other fixed connection methods known to those skilled in the art, which may be determined specifically according to actual situations and will not be described herein again.
Specifically, the adjustment portion 54 may be an inner hexagonal hole.
The stepped platform is disposed at the top end of the second cylindrical structure 53, and the end surface of the second end of the spring plate 6 abuts against the side wall of the first cylindrical structure 52.
Preferably, the end surface of the second end of the spring piece 6 may be a cambered surface.
In specific implementation, the stepped platform may include a plurality of stepped structures with different heights, and the plurality of stepped structures are arranged in order of height along the circumferential direction of the top end of the second cylindrical structure 53. For example, the stepped platform may comprise eighteen steps, wherein the first step having the smallest height corresponds to 30mmH2The cerebrospinal fluid pressure value of O is 40mmH corresponding to the second-level step structure with the second smallest height2The cerebrospinal fluid pressure value of O, the third-level step structure with the third smallest height corresponds to 50mmH2The cerebrospinal fluid pressure value of O is increased by 10mmH every time the cerebrospinal fluid pressure value is increased by one step2O, the eighteenth step with the highest height corresponds to 200mmH2O cerebrospinal fluid pressure value. According to the finite element simulation modeling result, the correspondence relationship between the pressure applied to the anti-siphon ball 4 by the first end of the spring piece 6 and the height of the step structure satisfies hooke's law, and therefore, the pressure applied to the anti-siphon ball 4 by the first end of the spring piece 6 can be more accurately controlled by making the second end of the spring piece 6 abut against the step structures with different heights.
It should be noted that a smooth transition platform may be disposed between the first-stage stepped structure with the lowest height and the eighteenth-stage stepped structure with the highest height.
In this embodiment, when the second end of the spring plate 6 is required to be pressed against different heights of the stepped platform, a special hexagonal adjusting wrench may be passed through the operation hole 21 to engage with the adjusting portion 54, and then the hexagonal adjusting wrench is rotated to rotate the first cylindrical structure 52, accordingly, the second cylindrical structure 53 is rotated in the support mounting hole 33 along with the rotation of the first cylindrical structure 52, and by accurately controlling the rotation angle of the first cylindrical structure 52 and making the end surface of the second end of the spring plate 6 abut against the corresponding side wall of the first cylindrical structure 52, the second end of the spring plate 6 can be reliably pressed against the stepped structure with a set height, so that the pressure applied to the anti-siphon ball 4 by the first end of the spring plate 6 can be correspondingly adjusted, and thus, the flow rate of the cerebrospinal fluid flowing into the sealed cavity 200 can be adjusted, also, when the support member 5 adopts the above structure, the structure of the adjusting device is simple.
It is emphasized that the clearance between the second cylindrical structure 53 and the support mounting hole 33 should be within a proper range, and if the clearance between the two is too large, reliable mounting of the second cylindrical structure 53 cannot be ensured, and if the clearance between the two is too small, the second cylindrical structure 53 will be difficult to rotate within the support mounting hole 33.
The spring piece support 32 has various embodiments for limiting the spring piece 6 by the mounting portion 61, and two specific embodiments thereof will be described below.
In one implementation form, the spring plate 6 may be provided with a through hole, and the mounting portion 61 is a connecting plate turned over at the edge of the through hole. In particular, the connecting plate may be a bent plate. The top end of the spring piece support 32 is provided with a connecting hole, and the connecting plate can be inserted into the connecting hole in a sliding way.
In this implementation, when the second end of the spring plate 6 is adjusted by the operator to be pressed against the step structures with different heights, the connecting plate slides in the connecting hole. Because the connecting plate is inserted in the connecting hole all the time, the spring piece 6 can be prevented from being separated from the anti-siphon ball 4 or the support piece 5 in the actual use process, so that the first end of the spring piece 6 can be reliably and always pressed against the anti-siphon ball 4, and the second end of the spring piece 6 can be always pressed against the support table 51.
In another implementation, as shown in fig. 2 and 3, the mounting portion 61 may be a flange provided along an edge of the spring plate 6. The top end of the spring piece support 32 is provided with a connecting hole, and the flanging is inserted in the connecting hole in a sliding manner. Specifically, the number of the flanges and the connecting holes can be multiple, and the flanges and the connecting holes can be in one-to-one correspondence.
In specific implementation, the flange may be an L-shaped flange, and the number of the flange and the number of the connecting hole may be two, however, the shape of the flange and the number of the flange and the connecting hole are not limited to the above-mentioned cases, and may be determined specifically according to actual situations, and this embodiment is not limited to this.
In this implementation form, when the second end of the spring piece 6 is adjusted by the operator to abut against the step structures with different heights, the flanges slide in the connecting holes at the corresponding positions. Because each flanging is always inserted into the connecting hole at the corresponding position, the spring piece 6 can be prevented from being separated from the anti-siphon ball 4 or the support piece 5 in the actual use process, the first end of the spring piece 6 can be reliably and always pressed against the anti-siphon ball 4, and the second end of the spring piece 6 can be always pressed against the support table 51.
It can be seen that when the spring plate support 32 limits the spring plate 6 through the two implementation forms, the structure of the whole adjusting device is simple, so that the adjusting device is convenient to produce and process.
As shown in fig. 2 and 3, in the above embodiment, the adjusting device may further include: a drainage seat 8 and an elastic membrane 9.
Wherein, a third liquid inlet (not shown in the figure due to the shielding of the elastic membrane 9) is arranged on the side wall of the flow limiting seat 3.
The drainage seat 8 is installed in the hollow structure 100 and located outside the sealed cavity 200. The drainage seat 8 has a first pipeline 81 and a second pipeline 82 therein, a first end (left end shown in fig. 1) of the first pipeline 81 is communicated with the second liquid inlet, a middle portion of the first pipeline 81 is communicated with a first end (upper left end shown in fig. 1) of the second pipeline 82, a second end (right end shown in fig. 1) of the first pipeline 81 is communicated with the third liquid inlet, and a second end (lower right end shown in fig. 1) of the second pipeline 82 is communicated with the first liquid inlet 35.
The aperture of the first pipeline 81 may be 2mm, and the aperture of the second pipeline 82 may be 0.5mm, that is, the aperture ratio between the first pipeline 81 and the second pipeline 82 is 4, and certainly, the values of the apertures of the first pipeline 81 and the second pipeline 82 are not limited thereto, and may be determined specifically according to the actual situation, and are not described herein again.
The elastic diaphragm 9 is located in the sealed cavity 200 and seals the third liquid inlet, the elastic diaphragm 9 abuts against the anti-siphon ball 4, and the elastic diaphragm 9 applies an acting force to the anti-siphon ball 4 in a direction toward the ball mounting hole 31 in a deformed state.
In this embodiment, after the cerebrospinal fluid flows in from the second fluid inlet, the cerebrospinal fluid is divided into two branches, wherein one branch flows in the first fluid channel 81 and finally flows to the third fluid inlet, and the other branch flows in the second fluid channel 82 and finally flows to the first fluid inlet 35.
It should be noted that, because the elastic mold piece 9 is located in the sealed cavity 200 and seals the third liquid inlet, the cerebrospinal fluid that finally flows to the third liquid inlet cannot enter the sealed cavity 200 at all, but the cerebrospinal fluid exerts a certain pressure on the elastic mold piece 9, so that the elastic mold piece 9 is elastically deformed accordingly.
It will be understood that when the pressure of the cerebrospinal fluid flowing in from the second inlet is higher than the pressure of the cerebrospinal fluid, the pressure applied to the elastic diaphragm 9 is higher, and accordingly, the deformation of the elastic diaphragm 9 is very large. At this time, the acting force applied by the elastic membrane 9 to the anti-siphon ball 4 in the direction of the ball mounting hole 31 is relatively large, so that the elastic membrane 9 can obstruct the lifting of the anti-siphon ball 4, that is, the anti-siphon ball 4 is difficult to be lifted for a relatively long distance in a short time, accordingly, the flow speed of the liquid flowing in from the first liquid inlet 35 will not change greatly in a short time, and thus, the over-drainage problem caused by the rapid change of the intracranial pressure of the patient can be well avoided.
In contrast, when the pressure of the cerebrospinal fluid flowing in from the second inlet is relatively small, the pressure applied to the elastic diaphragm 9 is relatively small, and accordingly, the deformation of the elastic diaphragm 9 is also very small. At this time, the acting force applied by the elastic module 9 to the anti-siphon ball 4 and towards the direction of the ball mounting hole 31 is also smaller, the acting force cannot cause obvious influence on the lifting process of the anti-siphon ball 4, and the normal drainage of the cerebrospinal fluid can be realized.
As shown in fig. 2, the adjusting device may further include: a pressure sensor 10, a controller 11 and a liquid crystal display 12. Wherein,
the pressure sensor 10 and the controller 11 are both installed in the hollow structure 100 and located outside the sealed cavity 200, and the liquid crystal display 12 is embedded on the top surface of the upper cover 1.
The pressure sensor 10 detects the pressure of the liquid flowing through the second line 82, and sends the detected pressure to the controller 11.
The controller 11 reads the pressure from the pressure sensor 10, transmits the read pressure to the liquid crystal display 12, and outputs an alarm signal when the rate of change of the read pressure exceeds a preset threshold.
The liquid crystal display 12 displays the received pressure.
Specifically, the alarm signal may be a voice alarm signal, for example, a setting voice output by a buzzer. Of course, the alarm signal may also be other types of alarm signals, such as a text alarm signal, which is also feasible. In addition, the specific value of the set threshold may be determined according to the actual situation, which is not limited in this embodiment.
It is easy to understand that, in order to ensure the normal operation of the pressure sensor 10, the controller 11 and the lcd 12, a battery for supplying power to the three may also be provided in the adjusting device.
In this embodiment, when the rate of change of the pressure of the fluid flowing through the second conduit 82 exceeds a set threshold, this indicates a sudden increase in intracranial pressure in the patient. At this time, the controller 11 will output an alarm signal, so as to prompt the patient or doctor to notice the situation in time and take corresponding measures for the situation, so as to effectively ensure the life safety of the patient. In addition, the doctor can know the intracranial pressure of the patient in time through the pressure displayed on the liquid crystal display screen 12 in real time so as to know the physical condition of the patient.
In the above embodiment, the adjusting device may further include: a limit stop (not shown); wherein the limit stop limits the maximum displacement of the anti-siphon ball 4 relative to the ball mounting hole 31.
Wherein, limit baffle can be fixed set up in sealed chamber 200 and be located spheroid mounting hole 31 directly over, and limit baffle can be set for according to actual conditions apart from the height of spheroid mounting hole 31.
Assuming that the anti-siphon ball 4 is currently located at a position capable of completely blocking the ball mounting hole 31, the anti-siphon ball 4 is gradually lifted up as the pressure of the cerebrospinal fluid flowing into the second inlet port increases. When the pressure of the cerebrospinal fluid flowing into the second inlet port increases to a certain pressure value, the anti-siphon ball 4 is lifted up to a maximum displacement position with respect to the ball mounting hole 31. At this moment, limit baffle blocks anti-siphon spheroid 4, and anti-siphon spheroid 4 can not continue to be lifted, and correspondingly, the velocity of flow of the liquid that flows into in sealed chamber 200 from first inlet 35 can not continue to increase again, can avoid like this better because the too fast excessive drainage problem that appears of intracranial pressure change of patient.
In conclusion, the adjusting device in the drainage system better solves the problems of control and adjustment of pressure and drainage speed, backflow and over-drainage caused by rapid change of intracranial pressure in the drainage process of cerebrospinal fluid, and simultaneously facilitates nursing operation in the drainage process, thereby reliably ensuring the life safety of patients.
The following describes a cerebrospinal fluid drainage system provided by an embodiment of the present invention.
The embodiment of the invention also provides a cerebrospinal fluid drainage system. Wherein, this cerebrospinal fluid drainage system includes: a drainage bag and an adjusting device in the cerebrospinal fluid drainage system. A second liquid inlet in the adjusting device is communicated with the ventricle or the lumbar cisterna of the patient through a first drainage tube, and a third liquid outlet in the adjusting device is communicated with the drainage bag through a second drainage tube.
It can be understood that when the second fluid inlet of the regulating device is communicated with the ventricle of the patient through the first drainage tube, the cerebrospinal fluid drainage system is applied to the ventricular external drainage; when the second liquid inlet in the adjusting device is communicated with the lumbar cisterna magna of a patient through the first drainage tube, the cerebrospinal fluid drainage system is applied to lumbar cisterna magna external drainage.
It should be noted that, the specific implementation process of the adjusting device in the cerebrospinal fluid drainage system can refer to the above description, and is not described herein again.
Because the adjusting device in the cerebrospinal fluid drainage system has the technical effects, the cerebrospinal fluid drainage system with the adjusting device also has corresponding technical effects.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A regulating device in a cerebrospinal fluid drainage system, comprising: the upper cover, the base, the flow limiting seat, the anti-siphon ball, the supporting piece and the spring piece; wherein,
the upper cover and the base are buckled to form a hollow structure, the flow limiting base is fixed in the hollow structure, and the bottom surface of the upper cover blocks the opening of the flow limiting base, so that a sealed cavity is formed in the flow limiting base;
the top surface of the flow limiting seat is provided with a ball mounting hole, a spring piece support, a support mounting hole and a first liquid outlet, the side wall of the flow limiting seat is provided with a first liquid inlet and a second liquid outlet, the spring piece support is positioned between the ball mounting hole and the support mounting hole, the ball mounting hole is communicated with the first liquid inlet, the first liquid inlet is also communicated with a second liquid inlet arranged on the upper cover and/or the base, the first liquid outlet is communicated with the second liquid outlet, and the second liquid outlet is also communicated with a third liquid outlet arranged on the upper cover and/or the base;
the anti-siphon ball body is positioned in the sealed cavity and is placed in the ball body mounting hole, and the anti-siphon ball body is used for plugging the ball body mounting hole;
the supporting piece is positioned in the sealing cavity and is arranged in the supporting piece mounting hole, and a supporting table is arranged at the top end of the supporting piece;
the spring leaf is located in the seal chamber, the first end overlap joint of spring leaf in anti siphon spheroid, the second end overlap joint of spring leaf in the brace table, and, the centre of spring leaf has the installation department, the spring leaf support passes through the installation department is right the spring leaf is spacing.
2. The adjusting device of claim 1, wherein the surface of the ball mounting hole that engages with the anti-siphon ball is a tapered surface or a spherical surface.
3. The adjustment device of claim 1, wherein the support platform is a stepped platform that spirals up, and the second end of the spring plate is adjusted to press against different heights of the stepped platform.
4. The adjustment device of claim 3, wherein the support member comprises: a first cylindrical structure and a hollow second cylindrical structure; wherein,
the second cylinder structure is rotatably installed in the supporting piece installation hole, the first cylinder structure is fixedly connected and sleeved in the second cylinder structure, an adjusting part is arranged at the bottom of the first cylinder structure, and an operation hole is formed in the base corresponding to the adjusting part;
the step-shaped platform is arranged at the top end of the second cylindrical structure, and the end surface of the second end of the spring piece abuts against the side wall of the first cylindrical structure.
5. The adjustment device of claim 1,
the spring piece is provided with a through hole, and the mounting part is a connecting plate which is arranged at the edge of the through hole in an overturning manner;
the top end of the spring piece support is provided with a connecting hole, and the connecting plate can be inserted into the connecting hole in a sliding manner.
6. The adjustment device of claim 1,
the mounting part is a flanging arranged along the edge of the spring piece;
the top end of the spring piece support is provided with a connecting hole, and the flanging is inserted in the connecting hole in a sliding manner.
7. The adjustment device of claim 1, further comprising: a drainage seat and an elastic membrane; wherein,
a third liquid inlet is formed in the side wall of the flow limiting seat;
the drainage seat is arranged in the hollow structure and is positioned outside the sealed cavity;
the drainage seat is internally provided with a first pipeline and a second pipeline, the first end of the first pipeline is communicated with the second liquid inlet, the middle part of the first pipeline is communicated with the first end of the second pipeline, the second end of the first pipeline is communicated with the third liquid inlet, and the second end of the second pipeline is communicated with the first liquid inlet;
the elastic diaphragm is positioned in the sealing cavity and blocks the third liquid inlet, the elastic diaphragm is abutted against the anti-siphon ball body, and acting force towards the direction of the ball body mounting hole is applied to the anti-siphon ball body in a deformation state by the elastic diaphragm.
8. The adjustment device of claim 7, further comprising: the device comprises a pressure sensor, a controller and a liquid crystal display screen; wherein,
the pressure sensor and the controller are both arranged in the hollow structure and positioned outside the sealing cavity, and the liquid crystal display screen is embedded on the top surface of the upper cover;
the pressure sensor detects the pressure of the liquid flowing through the second pipeline and sends the detected pressure to the controller;
the controller reads the pressure from the pressure sensor and sends the read pressure to the liquid crystal display screen;
and the liquid crystal display screen displays the received pressure.
9. The adjustment device of claim 1, further comprising: a limit baffle; wherein the limit baffle limits the maximum displacement of the anti-siphon ball body relative to the ball body mounting hole.
10. A cerebrospinal fluid drainage system, comprising: a drainage bag and a regulating device in a cerebrospinal fluid drainage system according to any of claims 1-9; wherein,
a second liquid inlet in the adjusting device is communicated with a ventricle or a lumbar cisterna of a patient through a first drainage tube, and a third liquid outlet in the adjusting device is communicated with the drainage bag through a second drainage tube.
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| CN201710437621.XA CN107281562B (en) | 2017-06-12 | 2017-06-12 | Adjusting device in cerebrospinal fluid drainage system and cerebrospinal fluid drainage system |
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| CN201710437621.XA CN107281562B (en) | 2017-06-12 | 2017-06-12 | Adjusting device in cerebrospinal fluid drainage system and cerebrospinal fluid drainage system |
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