CN107281562B - Adjusting device in cerebrospinal fluid drainage system and cerebrospinal fluid drainage system - Google Patents

Adjusting device in cerebrospinal fluid drainage system and cerebrospinal fluid drainage system Download PDF

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Publication number
CN107281562B
CN107281562B CN201710437621.XA CN201710437621A CN107281562B CN 107281562 B CN107281562 B CN 107281562B CN 201710437621 A CN201710437621 A CN 201710437621A CN 107281562 B CN107281562 B CN 107281562B
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spring piece
cerebrospinal fluid
siphon
mounting hole
ball
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CN107281562A (en
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郑春玲
于新
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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 embodiment of the invention provides an adjusting device in a cerebrospinal fluid drainage system and the cerebrospinal fluid drainage system. The device comprises: the anti-siphon device comprises an upper cover, a base, a flow limiting seat, an anti-siphon sphere, a support piece and a spring piece. The upper cover and the base are buckled to form a hollow structure, the flow-limiting seat is fixed in the hollow structure, and a sealing cavity is formed in the flow-limiting seat; the anti-siphon ball is positioned in the sealing cavity and placed in the ball mounting hole, and is used for plugging the ball mounting hole; the support piece is positioned in the sealing cavity and is arranged in the support piece mounting hole, and the top end of the support piece is provided with a support table; the spring piece is arranged in the sealing cavity, the first end of the spring piece is lapped on the anti-siphon sphere, the second end of the spring piece is lapped on the supporting table, the middle of the spring piece is provided with a mounting part, and the spring piece support limits the spring piece through the mounting part. The scheme solves the problems of control and regulation of pressure and drainage speed in the cerebrospinal fluid drainage process, countercurrent and excessive drainage caused by the rapid change of intracranial pressure, and simultaneously facilitates nursing operation in the drainage process.

Description

Adjusting device in cerebrospinal fluid drainage system and cerebrospinal fluid drainage system
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, for neurosurgical clinical treatment procedures, cerebrospinal fluid drainage (which may be specifically ventricular external drainage or lumbar external drainage) is a very common and effective treatment, and cerebrospinal fluid drainage generally requires a cerebrospinal fluid drainage system. Taking as an example a cerebrospinal fluid drainage system for use in an extracellular drainage of a brain, it generally comprises: the cerebral ventricle of the patient is communicated with the drainage bag through the drainage tube, and cerebrospinal fluid in the cerebral ventricle of the patient can enter the drainage bag through the drainage tube. The cerebrospinal fluid drainage system clinically applied to the outdoor cerebral drainage at present has the following obvious defects: various reasons lead to the backflow of cerebrospinal fluid from the drainage bag into the ventricle of the patient, which is easy to cause ventricular infection of the patient; when implementing the outer drainage of ventricles of brain art, generally need to adjust the height of drainage bag through artificial mode to control drainage speed, nursing work load is big and the operation degree of difficulty is high. The drainage system applied to external drainage of the lumbar cistern can also have the problems in the use process.
Disclosure of Invention
The embodiment of the invention aims to provide an adjusting device in a cerebrospinal fluid drainage system and the cerebrospinal fluid drainage system so as to solve the problem of the backflow of cerebrospinal fluid and simplify nursing operation. The specific technical scheme is as follows:
the embodiment of the invention provides an adjusting device in a cerebrospinal fluid drainage system, which comprises: the device comprises an upper cover, a base, a flow limiting seat, an anti-siphon sphere, a support piece and a spring piece; wherein, the liquid crystal display device comprises a liquid crystal display device,
the upper cover is buckled with the base to form a hollow structure, the flow-limiting seat is fixed in the hollow structure, and the bottom surface of the upper cover seals the opening of the flow-limiting seat so as to form a sealing cavity in the flow-limiting seat;
the top surface of the current-limiting seat is provided with a ball mounting hole, a spring piece support, a support piece mounting hole and a first liquid outlet, the side wall of the current-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 piece mounting hole, the ball mounting hole is communicated with the first liquid inlet, the first liquid inlet is also communicated with the 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 the third liquid outlet arranged on the upper cover and/or the base;
the anti-siphon ball is positioned in the sealing cavity and is arranged in the ball mounting hole, and the anti-siphon ball is used for sealing the ball mounting hole;
the supporting piece is positioned in the sealing cavity and is arranged in the supporting piece mounting hole, and the top end of the supporting piece is provided with a supporting table;
the spring piece is arranged in the sealing cavity, the first end of the spring piece is lapped on the anti-siphon sphere, the second end of the spring piece is lapped on the supporting table, the middle of the spring piece is provided with a mounting part, and the spring piece support limits the spring piece through the mounting part.
Optionally, the surface of the sphere mounting hole matched with the anti-siphon sphere is a conical surface or a spherical surface.
Optionally, the support table is a spirally rising stepped platform, and the second end of the spring piece is adjusted to be pressed against different heights of the stepped platform.
Optionally, the support comprises: a first cylindrical structure and a hollow second cylindrical structure; wherein, the liquid crystal display device comprises a liquid crystal display device,
the second cylinder structure is rotatably installed in the support 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 cylinder structure, and the end face of the second end of the spring piece abuts against the side wall of the second cylinder structure.
Optionally, the spring piece is provided with a through hole, and the mounting part is a connecting plate turned over at the edge of the through hole;
the top end of the spring piece support is provided with a connecting hole, and the connecting plate is slidably inserted into the connecting hole.
Optionally, the mounting portion is a flange disposed along an edge of the spring piece;
the top end of the spring piece support is provided with a connecting hole, and the flanging is slidably inserted into the connecting hole.
Optionally, the adjusting device further comprises: a drainage seat and an elastic membrane; wherein, the liquid crystal display device comprises a liquid crystal display device,
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 sealing 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 membrane is positioned in the sealing cavity and seals the third liquid inlet, the elastic membrane is propped against the anti-siphon sphere, and the elastic membrane applies acting force to the anti-siphon sphere in the direction of the sphere mounting hole under the deformation state.
Optionally, the adjusting device further comprises: the pressure sensor, the controller and the liquid crystal display screen; wherein, the liquid crystal display device comprises a liquid crystal display device,
the pressure sensor and the controller are both arranged in the hollow structure and are 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;
the liquid crystal display screen displays the received pressure.
Optionally, the adjusting device further comprises: a limit baffle; wherein the limit stop limits the maximum displacement of the anti-siphon sphere relative to the sphere 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, the liquid crystal display device comprises a liquid crystal display device,
the second liquid inlet in the adjusting device is communicated with the ventricle or the lumbar cistern of the patient through the first drainage tube, and the third liquid outlet in the adjusting device is communicated with the drainage bag through the second drainage tube. In this scheme, no matter under what circumstances, cerebrospinal fluid all can only flow from patient's internal to in the drainage bag is got into through first drainage tube, adjusting device and second drainage tube in proper order, or the cerebrospinal fluid just can not get into sealed intracavity at all, it can not flow back to in the first drainage tube and the patient is internal from adjusting device for the first time, and the cerebrospinal fluid can only one-way flow promptly, so this scheme has solved the problem of flowing back of cerebrospinal fluid well, thereby avoided the ventricular system infection that arouses because of the countercurrent of cerebrospinal fluid, and then protected patient's life safety reliably.
In addition, it should be noted that in the case where 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 between the two pressures is greater, the height at which the anti-siphon ball is lifted, i.e., the displacement of the anti-siphon ball with respect to the ball mounting hole is greater, and accordingly, the flow rate of the cerebrospinal fluid entering the seal chamber from the first inlet is faster. Conversely, the smaller the difference between the two pressures, the smaller the height to 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 entering the seal chamber from the first fluid inlet. That is, depending on the pressure of the cerebrospinal fluid flowing to the first inlet, the regulating device itself is able to regulate the drainage speed, which regulating process does not require manual intervention.
Therefore, the scheme effectively solves the problems of control and regulation of pressure and drainage speed in the cerebrospinal fluid drainage process, countercurrent and excessive drainage caused by the rapid change of intracranial pressure, facilitates nursing operation in the drainage process, and can display intracranial pressure of a patient in real time through the liquid crystal display screen.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an assembly view of an adjusting device in a cerebrospinal fluid drainage system according to an embodiment of the invention;
FIG. 2 is a half cross-sectional view of an adjustment device in a cerebrospinal fluid drainage system according to an embodiment of the invention;
FIG. 3 is a schematic structural view of an adjusting device in a cerebrospinal fluid drainage system according to an embodiment of the invention;
fig. 4 is a schematic structural view of a flow restrictor pad in an adjusting device of a cerebrospinal fluid drainage system according to an embodiment of the present invention.
The correspondence between each component name and the corresponding reference numeral in fig. 1 to 4 is:
1, upper cover; 2, a base; 3, a current limiting seat; 31 ball mounting holes; 32 spring piece support; 33 support mounting holes; 34 a first outlet; 35 a first liquid inlet; 4 an anti-siphon sphere; 5 a support; 51 a support table; 52 a first cylindrical structure; 53 a second cylindrical structure; 54 an adjustment section; 6, a spring piece; 61 mounting portions; 7, a first interface; 8, a drainage seat; 81 a first line; 82 a second line; 9 an elastic membrane; a 10 pressure sensor; 11 a controller; 12 a liquid crystal display; 100 hollow structure; 200 seal the cavity.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to solve the problems in the prior art, the embodiment of the invention provides an adjusting 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 the external drainage of the brain chamber and the external drainage of the lumbar cistern. Generally, the cerebrospinal fluid drainage system works in a similar manner in the ventricular external drainage and the lumbar cistern external drainage, so the following embodiments will be described by taking the case that the cerebrospinal fluid drainage system is applied to the ventricular external drainage as an example.
An adjusting device in a cerebrospinal fluid drainage system according to an embodiment of the present invention will be described first.
Referring to fig. 1 to 3, a schematic structural diagram of an adjusting device in a cerebrospinal fluid drainage system according to an embodiment of the invention is shown. As shown in fig. 1 to 3, the adjusting device includes: the anti-siphon device comprises an upper cover 1, a base 2, a flow limiting seat 3, an anti-siphon sphere 4, a support piece 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 seals the opening of the flow-limiting seat 3, so that a sealing cavity 200 is formed in the flow-limiting seat 3.
Specifically, the upper cover 1 may be made of 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-limiting seat 3 may be fixed on either the upper cover 1 or the base 2, and it is only necessary to ensure that the opening of the flow-limiting seat 3 is blocked by the upper cover 1, so that the sealing cavity 200 can be formed inside the flow-limiting seat 3.
As shown in fig. 2 to 4, the top surface of the flow-limiting seat 3 is provided with a ball mounting hole 31, a spring piece support 32, a support piece 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 because of the shielding of the first jack 7), the spring piece support 32 is positioned between the ball mounting hole 31 and the support piece mounting hole 33, the ball mounting hole 31 is communicated with the first liquid inlet 35, the first liquid inlet 35 is also communicated with the second liquid inlet (not shown in the figure because of the shielding of the flow-guiding seat 8) arranged on 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 also communicated with a third liquid outlet (not shown in the figure because of the shielding of the first jack 7) arranged on the upper cover 1 and/or the base 2.
It is easy to see that the first liquid outlet 34, the second liquid outlet and the third liquid outlet are communicated in sequence through the first interface 7.
The anti-siphon ball 4 is located in the sealing chamber 200 and placed in the ball mounting hole 31, and the anti-siphon ball 4 is used to block the ball mounting hole 31.
The anti-siphon ball 4 may be a glass ball, and of course, the anti-siphon ball 4 may be a ball made of other materials.
In order to seal the anti-siphon ball 4 to the ball mounting hole 31, the surface of the ball mounting hole 31 that mates 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 mounted in the support mounting hole 33, and the top end of the support 5 has a support stand 51.
The spring plate 6 is located in the seal chamber 200, a first end (left end shown in fig. 1) of the spring plate 6 is overlapped with the anti-siphon ball 4, a second end (right end shown in fig. 1) of the spring plate 6 is overlapped with the support table 5, and a mounting portion 61 is provided in the middle of the spring plate 6, and the spring plate support 32 limits the spring plate 6 through the mounting portion 61.
It should be noted that, the specific implementation manner of the spring piece support 32 for limiting the spring piece 6 by the mounting portion 61 is various, and for the sake of layout clarity, the following description will be given by way of example.
It will be readily appreciated that since the first end of the leaf spring 6 overlaps the anti-siphon ball 4, the first end of the leaf spring 6 will exert a force on the anti-siphon ball 4. In order to reliably overlap the first end of the leaf spring 6 with the anti-siphon ball 4, the first end of the leaf spring 6 may be bonded to the anti-siphon ball 4.
For the adjusting device in the cerebrospinal fluid drainage system that this scheme provided, when actually installing, can be fixed in patient's head with this adjusting device through fixed subassembly, then make the second inlet be linked together with patient's ventricle through first drainage tube, make the third liquid outlet be linked together with the drainage bag through the second drainage tube simultaneously.
When the drainage system provided with the adjusting device is used for performing the ventricular external drainage operation, cerebrospinal fluid flowing from the intracranial space of the patient can flow to the second liquid inlet through the first drainage tube and successfully enter the hollow structure 100 from the second liquid inlet. Thereafter, cerebrospinal fluid will flow to the first fluid inlet 35, which is in communication with the second fluid inlet.
If the intracranial pressure of the patient is not too high, the pressure of the cerebrospinal fluid flowing to the first inlet 35 is generally not higher than the pressure applied to the anti-siphon ball 4 by the first end of the spring plate 6, and at this time, the anti-siphon ball 4 is positioned to completely seal the ball mounting hole 31, and accordingly, the cerebrospinal fluid flowing to the first inlet 35 cannot enter the seal chamber 200 through the ball mounting hole 31, and the cerebrospinal fluid in the seal chamber 200 cannot flow back to the first inlet 35 through the ball mounting hole 31.
When the pressure in the cranium of the patient suddenly increases due to the body position change, cough, force, etc., 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 plate 6, at this time, the anti-siphon ball 4 is lifted up under the combined force of the two forces, i.e. the anti-siphon ball 4 is displaced relative to the ball mounting hole 31, the anti-siphon ball 4 cannot be kept 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 sealing cavity 200 through the ball mounting hole 31. Next, after the cerebrospinal fluid entering the sealed cavity 200 flows to the first liquid outlet 34, the cerebrospinal fluid sequentially passes through the second liquid outlet and the third liquid outlet and then flows out of the sealed cavity 200, and then the cerebrospinal fluid flowing out of the hollow structure 100 enters the drainage bag through the second drainage tube and is collected.
It is easy to see that no matter what circumstances, the cerebrospinal fluid can only flow out from the cranium of the patient and sequentially pass through the first drainage tube, the adjusting device and the second drainage tube to enter the drainage bag, or the cerebrospinal fluid can not enter the sealing cavity 200 at all, and can never flow back into the first drainage tube from the adjusting device and flow back into the cranium of the patient, namely, the cerebrospinal fluid can flow in one direction only, so the scheme better solves the problem of the backflow of the cerebrospinal fluid, thereby avoiding the infection of the ventricle of the patient due to the backflow of the cerebrospinal fluid and further reliably protecting the life safety of the patient.
In addition, it should be noted that in the case where the pressure of the cerebrospinal fluid flowing to the first fluid inlet 35 is greater than the pressure applied to the anti-siphon ball 4 by the first end of the spring plate 6, if the difference between the two pressures is greater, 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 is greater, and accordingly, the flow rate of the cerebrospinal fluid entering the seal chamber 200 from the first fluid inlet 35 is faster. Conversely, the smaller the difference between the 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 cerebrospinal fluid entering the seal chamber 200 from the first inlet 35. That is, depending on the pressure of the cerebrospinal fluid flowing to the first inlet 35, the regulating device itself can regulate the drainage rate, which does not require manual intervention.
Therefore, the problem of countercurrent easily occurring in the drainage process is well solved, and meanwhile, the nursing operation in the drainage process is greatly simplified.
As shown in fig. 2 and 3, in the above embodiment, the support table 51 may be a spirally rising step-like platform, and the second end of the spring piece 6 is adjusted to be pressed against different heights of the step-like platform.
It will be appreciated that the pressure exerted by the first end of the leaf spring 6 on the anti-siphon ball 4 will vary as the second end of the leaf spring 6 is pressed against the stepped platform at different heights.
Specifically, if the second end of the spring piece 6 is pressed against the step-like platform at a higher height, the pressure exerted by the first end of the spring piece 6 on the anti-siphon ball 4 is greater; conversely, the smaller the pressure exerted by the first end of the leaf spring 6 on the anti-siphon ball 4. For example, if the anti-siphon ball 4 is currently located at a position where the ball mounting hole 31 cannot be completely plugged, the pressure applied to the anti-siphon ball 4 by the first end of the spring piece 6 will gradually increase as the height of the second end of the spring piece 6 against the stepped platform increases, and the lifted height of the anti-siphon ball 4 will gradually decrease, so that the flow rate of cerebrospinal fluid flowing into the seal cavity 200 will gradually decrease; when the pressure exerted on 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 returns to a position where it can completely seal off the anti-siphon ball 4, and the cerebrospinal fluid cannot enter the seal cavity 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 adjusting the second end of the spring piece 6 to be propped 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 support 5 has various structural forms, and one of the structural forms will be described by way of example 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. The second cylinder structure 53 is rotatably installed in the support member mounting hole 33, that is, an outer wall of the second cylinder structure 53 is matched with an inner wall of the support member mounting hole 33. The first cylinder structure 52 is fixedly connected and sleeved in the second cylinder structure 53, and an adjusting portion 54 shown in fig. 2 is arranged at the bottom of the first cylinder 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 manners known to those skilled in the art, which may be specifically determined according to practical situations, and will not be described herein in detail.
Specifically, the adjustment portion 54 may be an internal hexagonal hole.
The stepped platform is provided at the top end of the second cylindrical structure 53, and the end face of the second end of the spring piece 6 abuts against the side wall of the second cylindrical structure 52.
Preferably, the end surface of the second end of the spring piece 6 may be a cambered surface.
In particular, the stepped platform may include a plurality of stepped structures having different heights, which are arranged in order of height along the circumferential direction of the top end of the second cylindrical structure 53. For example, in the case of a glass,the stepped platform may comprise eighteen-stage stepped structures, wherein the first-stage stepped structure with the smallest height corresponds to 30mmH 2 O, the second-stage step structure with the second smallest height corresponds to 40mmH 2 O, the third level of step structure with the third smallest height corresponds to 50mmH 2 O, and every step is added, the corresponding cerebrospinal fluid pressure value is increased by 10mmH 2 O, the eighteenth step with the highest height corresponds to 200mmH 2 Cerebrospinal fluid pressure value of O. As can be seen from the result of finite element simulation modeling, the correspondence between the pressure applied by the first end of the spring plate 6 to the anti-siphon ball 4 and the height of the step structure satisfies hooke's law, and therefore, the pressure applied by the first end of the spring plate 6 to the anti-siphon ball 4 can be controlled more precisely by pressing the second end of the spring plate 6 against the step structures of different heights.
It should be noted that a transition stage with a smooth end may be provided between the first step structure with the lowest height and the eighteenth step structure with the highest height.
In this embodiment, when the second end of the spring piece 6 is required to be pressed against different heights on the stepped platform, a dedicated hexagonal adjusting wrench can be passed through the operation hole 21 to be matched with the adjusting portion 54, and then the hexagonal adjusting wrench is rotated to drive the first cylindrical structure 52 to rotate through the rotation of the hexagonal adjusting wrench, accordingly, the second cylindrical structure 53 also rotates in the support member mounting hole 33 along with the rotation of the first cylindrical structure 52, by accurately controlling the rotation angle of the first cylindrical structure 52 and pressing the end surface of the second end of the spring piece 6 against the side wall of the corresponding position of the first cylindrical structure 52, the second end of the spring piece 6 can be reliably pressed against the stepped structure with a set height, so that the pressure applied by the first end of the spring piece 6 to the anti-siphon ball 4 can be correspondingly adjusted, and the flow rate of cerebrospinal fluid flowing into the seal chamber 200 can be adjusted.
It should be emphasized that the gap between the second cylindrical structure 53 and the support mounting hole 33 should be within a suitable range, if the gap between the two is too large, reliable mounting of the second cylindrical structure 53 cannot be ensured, and if the gap between the two is too small, it will be difficult for the second cylindrical structure 53 to rotate within the support mounting hole 33.
The spring piece holder 32 is variously realized by limiting the spring piece 6 by the mounting portion 61, and two specific realization forms thereof are exemplified below.
In one implementation, the spring plate 6 may be provided with a through hole, and the mounting portion 61 is a connection plate turned over at an edge of the through hole. In particular, the connection plate may be a bending plate. The top end of the spring piece support 32 is provided with a connecting hole, and the connecting plate is slidably inserted into the connecting hole.
In this implementation, when the second end of the operator adjusts the spring plate 6 to press against the step structure of different heights, the connection plate slides in the connection hole. Because the connecting plate is always inserted into the connecting hole, the spring piece 6 can be prevented from being separated from the anti-siphon ball 4 or the supporting piece 5 in the actual use process, so that the first end of the spring piece 6 can be reliably ensured to be always propped against the anti-siphon ball 4, and the second end of the spring piece 6 can be always propped against the supporting 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 slidably inserted into the connecting hole. Specifically, the number of the flanging and the connecting holes can be multiple, and the flanging 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 holes may be two, which are, of course, not limited to the above, and may be specifically determined according to practical situations, and this embodiment is not limited in any way.
In this implementation, when the second end of the operator adjusts the spring plate 6 to press against the step structures of different heights, each flange will slide in the corresponding connecting hole. Because each turn-ups 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 supporting piece 5 in the actual use process, so that the first end of the spring piece 6 can be reliably ensured to be always propped against the anti-siphon ball 4, and the second end of the spring piece 6 can be always propped against the supporting table 51.
It can be seen that when the spring piece support 32 limits the spring piece 6 in the two implementation manners, the whole adjusting device has a simple structure, so that the adjusting device is convenient to produce and process.
As shown in fig. 2 and 3, in the foregoing 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 because of 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 is located outside the sealing cavity 200. The drainage seat 8 is provided with a first pipeline 81 and a second pipeline 82, a first end (left end shown in fig. 1) of the first pipeline 81 is communicated with the second liquid inlet, a middle part of the first pipeline 81 is communicated with a first end (left upper 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 (right lower end shown in fig. 1) of the second pipeline 82 is communicated with the first liquid inlet 35.
The aperture of the first pipe 81 may be 2mm, and the aperture of the second pipe 82 may be 0.5mm, that is, the aperture ratio of the first pipe 81 and the second pipe 82 is 4, and of course, the values of the apertures of the first pipe 81 and the second pipe 82 are not limited thereto, and may be specifically determined according to practical situations, and will not be described herein.
The elastic membrane 9 is located in the sealing cavity 200 and seals the third liquid inlet, the elastic membrane 9 abuts against the anti-siphon ball 4, and the elastic membrane 9 applies a force to the anti-siphon ball 4 in a deformed state in a direction toward the ball mounting hole 31.
In this embodiment, when cerebrospinal fluid flows in from the second inlet, the cerebrospinal fluid is divided into two branches, wherein one branch flows in the first pipeline 81 and finally flows to the third inlet, and the other branch flows in the second pipeline 82 and finally flows to the first inlet 35.
It should be noted that, since the elastic membrane 9 is located in the sealing cavity 200 and seals the third liquid inlet, the cerebrospinal fluid that finally flows to the third liquid inlet cannot enter the sealing cavity 200 at all, but the cerebrospinal fluid will apply a certain pressure to the elastic membrane 9, and thus, the elastic membrane 9 will generate corresponding elastic deformation.
It will be readily appreciated that when the pressure of the cerebrospinal fluid flowing from the second inlet is relatively high, the pressure exerted on the elastic membrane 9 will be relatively high and, correspondingly, the deformation of the elastic membrane 9 will be very large. At this time, the force applied by the elastic membrane 9 to the anti-siphon ball 4 in the direction toward the ball mounting hole 31 is relatively large, and thus the elastic membrane 9 may hinder the lifting of the anti-siphon ball 4, that is, the anti-siphon ball 4 may be difficult to be lifted by a relatively large distance in a short time, and accordingly, the flow rate of the liquid flowing from the first liquid inlet 35 may not be changed greatly in a short time, so that an excessive drainage problem due to too fast change of intracranial pressure of the patient may be preferably avoided.
Conversely, when the pressure of the cerebrospinal fluid flowing from the second inlet is relatively small, the pressure applied to the elastic membrane 9 will be relatively small, and accordingly, the deformation of the elastic membrane 9 will be very small. At this time, the force applied by the elastic module 9 to the anti-siphon ball 4 in the direction of the ball mounting hole 31 is also relatively small, and the force does not have a significant influence on the lifting process of the anti-siphon ball 4, so that the normal drainage of cerebrospinal fluid is 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 liquid crystal display device comprises a liquid crystal display device,
the pressure sensor 10 and the controller 11 are both arranged in the hollow structure 100 and outside the sealing 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 pipe 82 and transmits 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 is output through a buzzer. Of course, other types of alarm signals, such as text alarm signals, are also possible. 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 will be readily appreciated that in order to ensure proper operation of the pressure sensor 10, the controller 11 and the liquid crystal display 12, a battery for powering the three may be provided in the adjustment device.
In this embodiment, the rate of change of the pressure of the fluid flowing through the second conduit 82 exceeds a set threshold value, which indicates a sudden rise in the intracranial pressure of the patient. At this time, the controller 11 outputs an alarm signal, so that the patient or doctor can be prompted to notice the situation in time, and corresponding measures can be taken for the situation, so that the life safety of the patient can be effectively ensured. In addition, doctors can timely know the intracranial pressure of the patient 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: limit stops (not shown); wherein the limit stop limits the maximum displacement of the anti-siphon sphere 4 relative to the sphere mounting hole 31.
Wherein, limit baffle can be fixed to set up in sealed chamber 200 and be located the spheroid mounting hole 31 directly over, and limit baffle can be set up according to actual conditions from the height of spheroid mounting hole 31.
Assuming that the anti-siphon ball 4 is currently in a position to completely block the ball mounting hole 31, the anti-siphon ball 4 will be gradually lifted as the pressure of cerebrospinal fluid flowing into the second inlet increases. When the pressure of the cerebrospinal fluid flowing into the second inlet increases to a certain pressure value, the anti-siphon ball 4 is lifted to a maximum displacement with respect to the ball mounting hole 31. At this time, the stop baffle blocks the anti-siphon ball 4, and the anti-siphon ball 4 cannot be lifted continuously, accordingly, the flow rate of the liquid flowing into the sealing cavity 200 from the first liquid inlet 35 cannot be increased continuously, so that the problem of excessive drainage caused by too fast change of intracranial pressure of a patient can be avoided well.
In conclusion, the adjusting device in the drainage system well solves the problems of control and adjustment of pressure and drainage speed in the cerebrospinal fluid drainage process, countercurrent and drainage overmuch caused by the rapid change of intracranial pressure, and meanwhile, nursing operation in the drainage process is facilitated, so that the life safety of a patient is reliably ensured.
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 a ventricle or a lumbar cistern of a patient through a first drainage tube, and a third liquid outlet in the adjusting device is communicated with a drainage bag through a second drainage tube.
It is understood that the cerebrospinal fluid drainage system is applied to an outdoor drainage operation when the second fluid inlet in the regulating device is communicated with the ventricle of the patient through the first drainage tube; when the second liquid inlet in the adjusting device is communicated with the lumbar cistern of the patient through the first drainage tube, the cerebrospinal fluid drainage system is applied to external drainage of the lumbar cistern.
It should be noted that, the specific implementation process of the adjusting device in the cerebrospinal fluid drainage system is described above, and will not be described herein.
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 foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims (7)

1. An adjustment device in a cerebrospinal fluid drainage system, comprising: the device comprises an upper cover, a base, a flow-limiting seat, an anti-siphon sphere, a supporting piece, a spring piece, a drainage seat and an elastic diaphragm; wherein, the liquid crystal display device comprises a liquid crystal display device,
the upper cover is buckled with the base to form a hollow structure, the flow-limiting seat is fixed in the hollow structure, and the bottom surface of the upper cover seals the opening of the flow-limiting seat so as to form a sealing cavity in the flow-limiting seat;
the top surface of the current-limiting seat is provided with a ball mounting hole, a spring piece support, a support piece mounting hole and a first liquid outlet, the side wall of the current-limiting seat is provided with a first liquid inlet, a second liquid outlet and a third liquid inlet, the spring piece support is positioned between the ball mounting hole and the support piece mounting hole, the ball mounting hole is communicated with the first liquid inlet, the first liquid inlet is also communicated with the 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 the third liquid outlet arranged on the upper cover and/or the base;
the anti-siphon ball is positioned in the sealing cavity and is arranged in the ball mounting hole, and the anti-siphon ball is used for sealing the ball mounting hole;
the supporting piece is positioned in the sealing cavity and is arranged in the supporting piece mounting hole, and the top end of the supporting piece is provided with a supporting table;
the spring piece is positioned in the sealing cavity, the first end of the spring piece is lapped on the anti-siphon sphere, the second end of the spring piece is lapped on the supporting table, the middle of the spring piece is provided with a mounting part, and the spring piece support limits the spring piece through the mounting part;
the drainage seat is arranged in the hollow structure and is positioned outside the sealing cavity, a first pipeline and a second pipeline are arranged in the drainage seat, a first end of the first pipeline is communicated with the second liquid inlet, the middle part of the first pipeline is communicated with a first end of the second pipeline, a second end of the first pipeline is communicated with the third liquid inlet, and a second end of the second pipeline is communicated with the first liquid inlet;
the elastic membrane is positioned in the sealing cavity and seals the third liquid inlet, the elastic membrane is propped against the anti-siphon sphere, and the elastic membrane applies a force to the anti-siphon sphere in a deformation state in the direction of the sphere mounting hole;
the supporting table is a step-shaped platform which rises in a spiral mode, and the second end of the spring piece is adjusted to be propped against different heights of the step-shaped platform;
the support includes: a first cylindrical structure and a hollow second cylindrical structure; the second cylinder structure is rotatably installed in the support 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 cylinder structure, and the end face of the second end of the spring piece abuts against the side wall of the second cylinder structure.
2. The adjustment device of claim 1, wherein the surface of the ball mounting hole that mates with the anti-siphon ball is a conical surface or a spherical surface.
3. The adjustment device of claim 1, wherein,
the spring piece is provided with a through hole, and the mounting part is a connecting plate which is turned over at the edge of the through hole;
the top end of the spring piece support is provided with a connecting hole, and the connecting plate is slidably inserted into the connecting hole.
4. The adjustment device of claim 1, wherein,
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 slidably inserted into the connecting hole.
5. The adjustment device of claim 1, further comprising: the pressure sensor, the controller and the liquid crystal display screen; wherein, the liquid crystal display device comprises a liquid crystal display device,
the pressure sensor and the controller are both arranged in the hollow structure and are 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;
the liquid crystal display screen displays the received pressure.
6. The adjustment device of claim 1, further comprising: a limit baffle; wherein the limit stop limits the maximum displacement of the anti-siphon sphere relative to the sphere mounting hole.
7. A cerebrospinal fluid drainage system, comprising: a drainage bag and an adjustment device in a cerebrospinal fluid drainage system according to any one of claims 1-6; wherein, the liquid crystal display device comprises a liquid crystal display device,
the second liquid inlet in the adjusting device is communicated with the ventricle or the lumbar cistern of the patient through the first drainage tube, and the third liquid outlet in the adjusting device is communicated with the drainage bag through the second drainage tube.
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CN110051892B (en) * 2019-05-05 2021-05-04 温州市人民医院 Full-automatic flow-rate-adjusting backflow-preventing cerebrospinal fluid drainage device
CN110433350B (en) * 2019-08-27 2021-09-21 南通大学附属医院 Waist cisterna cerebrospinal fluid drainage is with synthesizing nursing intervention device

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