CN107854772B - Surgical adjustable differential pressure valve - Google Patents
Surgical adjustable differential pressure valve Download PDFInfo
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- CN107854772B CN107854772B CN201710263985.0A CN201710263985A CN107854772B CN 107854772 B CN107854772 B CN 107854772B CN 201710263985 A CN201710263985 A CN 201710263985A CN 107854772 B CN107854772 B CN 107854772B
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- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
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Abstract
The invention provides a cerebrospinal fluid shunt solution for surgery, which is an adjustable differential pressure valve and is mainly applied to cerebrospinal fluid shunt for neurosurgery hydrocephalus, syringomyelia and other diseases.
Description
Technical Field
The invention relates to an adjustable differential pressure valve for surgery, which is mainly applied to the shunt of neurosurgery cerebrospinal fluid and belongs to the field of surgical medical appliances.
Background
Hydrocephalus and syringomyelia are common diseases in neurosurgery, and are caused by poor cerebrospinal fluid circulation, wherein the cerebrospinal fluid circulation is a part of normal physiological circulation of human, cerebrospinal fluid is generated by the choroid plexus of lateral ventricles, enters the ventricles through a lateral hole, enters the ventricles through a central tube, and enters the subarachnoid space on the surface of the brain through a central hole and a lateral hole of the ventricles after passing through the central tube of the ventricles, is absorbed into blood at subarachnoid particles and enters the blood circulation of the human body, the secretion amount of cerebrospinal fluid of normal human is about 350-500ml per day, and the secretion amount of cerebrospinal fluid of the normal ventricles is about 150-300ml, so that when the secretion amount of cerebrospinal fluid is larger than the absorption amount, the ventricles gradually expand, and then the cerebral hydrocephalus is evolved. Hydrocephalus can be classified into traffic hydrocephalus according to types, namely, hydrocephalus caused by unsmooth absorption of cerebrospinal fluid; obstructive hydrocephalus, i.e., a location of obstruction in the cerebrospinal fluid circulation, such as: tumor compression, and the like. According to the pathogenesis, the hydrocephalus can be divided into congenital hydrocephalus of children and secondary hydrocephalus, wherein the secondary hydrocephalus comprises hydrocephalus caused by factors such as craniocerebral trauma, subarachnoid hemorrhage, encephalitis, neurosurgery and the like. The intracranial pressure can be divided into high-pressure hydrocephalus and normal-pressure hydrocephalus according to the intracranial pressure.
The hydrocephalus is divided into a constant pressure shunt tube, namely a shunt tube which can not be subjected to pressure regulation, and an adjustable pressure shunt tube, namely the pressure of the shunt tube can be regulated according to the requirement. Because of the specificity of the ventricle system and the characteristic of continuously changing pressure, the pressure-adjustable shunt tube is more in line with the physiological characteristics and is also more suitable for the requirement of neurosurgery.
Currently, clinically applied adjustable pressure shunt tubes are mainly from products of the Sofossa company, france, of the United states of America, the Brown snake, germany, and the adjustable pressure principle of the shunt tubes of each manufacturer is different, for example: the wireless servo motor principle is adopted by the American strong company, the compression spring principle is adopted by the American Medun force company, and the pressure spring sheet is adopted by the German Below snake brand and the French Sofossa. The shunt pipe products in the domestic and foreign markets in the field are all from the four companies. In the invention, the inventor adopts a brand new pressure regulating mode, namely a pressure regulating spring plate lever principle, and a pressure locking mode, namely a principle of pressing an eccentric circle to unlock, so that the pressure can be well regulated, and the magnetic field resistance effect can be realized, and the pressure of the device can be kept unchanged under the action of a magnetic field, such as magnetic resonance. Meanwhile, the invention has the functions of unidirectional fluid flow, backflow prevention and anti-siphon.
Disclosure of Invention
The invention aims to provide a novel adjustable differential pressure valve for cerebrospinal fluid diversion, which has the functions of adjustable pressure, magnetic field resistance, backflow resistance, siphon resistance and the like.
A surgical adjustable differential pressure valve, comprising:
a pressure regulating portion comprising:
pressure regulating ruby ball, pressure regulating shell fragment, pressure regulating magnetite, carousel, locking tooth, curved surface spring, slider.
A housing portion comprising:
with reference to the magnet, the teeth are engaged, the unlocking switch is pressed, and the center post is pressed.
An anti-siphon portion comprising a pressure plate that can be opened and closed.
A liquid circulation portion comprising:
an inlet, an outlet, and a cavity extending through the interior of the device.
An anti-reflux portion comprising:
check ruby ball, spring, inflow end, outflow end.
The pressure regulating ruby ball of the device seals the inlet below, and the pressure regulating spring plate is attached above.
The pressure regulating spring plate of the device penetrates through the pressure regulating part from the upper inclined line downwards, and the upper part of the pressure regulating spring plate is attached to the slope-shaped bottom of the turntable. The pressure generated by the slope-shaped bottom surface of the turntable is different to the pressure regulating elastic piece through clockwise or anticlockwise rotation of the turntable, namely, the larger the gradient is, the larger the generated pressure is, and then the pressure of the pressure regulating elastic piece is different, so that the pressure of the pressure regulating ruby ball is different. When the pressure of the fluid at the inlet is greater than the pressure of the pressure regulating elastic sheet to act on the pressure regulating ruby ball, the fluid can wash the pressure regulating ruby ball into the cavity.
The pressure regulating magnets of the device are positioned in the turntable, are symmetrically distributed, are respectively composed of one magnet and can rotate together with the turntable.
The slider of the device is positioned at the center inside the turntable and can transversely slide in the turntable, the middle of the slider is a circular hollowed-out part, the hollowed-out part is an inclined surface and is attached to the center column, and the side, connected with the curved spring, of the rear of the locking tooth is attached to the meshing tooth through the locking tooth under the action of the elastic force of the curved spring.
The center column of the device is positioned below the shell, is connected with the pressing unlocking switch, is cylindrical, and has a tip in a taper shape, is opposite to a rotary table dot below and is attached to a circular hollow part of the sliding block. When the unlocking switch is pressed, under the action of external pressure, the middle column is displaced inwards, and under the action of the inclined plane of the middle column and the inclined plane of the circular hollowed-out part, the sliding block moves on the turntable, so that the locking teeth are separated from the meshing teeth.
The meshing teeth of the device are positioned inside the shell, and the inner side of the meshing teeth is attached to the locking teeth of the sliding block.
The reference magnet of the device is positioned in the shell and consists of one magnet and is used for reading the pressure setting value and the reference point during pressure regulation.
The upper part of the anti-siphon part of the device is connected with the pressure regulating part, the lower part of the device is connected with the outlet, and an openable pressing plate is arranged in the device to cover the outlet. The pressure plate is opened under the action of pressure from the fluid, and when the outflow channel of the device is in a negative pressure state, the pressure plate is closed under the siphon action, so that the excessive and too fast outflow of the fluid is prevented.
The inflow end of the anti-reflux part of the device is connected with the far end of the outlet, the outflow end is arranged below the device, and a non-return ruby ball and a spring are arranged in the device. When fluid passes through the anti-reflux portion of the device, the spring is compressed under fluid pressure against the check ruby ball, such that fluid flows through the anti-reflux portion. When the fluid reversely enters the anti-backflow part, the anti-backflow part ensures that the anti-backflow ruby ball is always sealed at the inflow end due to the functions of the anti-backflow ruby ball and the spring.
Preferably, the device is used for pressure regulation under the action of the pressure regulating device: the pressure regulating device acts on the pressing unlocking switch of the shell to enable the pressure regulating device to be subjected to the pressure action from the pressure regulating device, the middle column generates displacement inwards, the sliding block moves on the rotary table under the action of the inclined plane of the middle column and the inclined plane of the circular hollow part of the sliding block, the curved surface spring is compressed, the locking teeth are separated from the meshing teeth, the pressure regulating magnet is attracted with the magnet N-S of the pressure regulating device, the pressure regulating device is rotated clockwise or anticlockwise, the pressure regulating magnet rotates along with the pressure regulating device, the rotary table is driven to rotate clockwise or anticlockwise, the slope-shaped bottom surface of the rotary table generates corresponding pressure change for the pressure regulating elastic sheet, and finally the pressure acting on the pressure regulating ruby ball generates corresponding pressure change. Releasing the pressure action of the pressure regulating device on the pressing unlocking switch, and enabling the locking teeth and the meshing teeth to be attached again by the sliding block under the elastic action of the curved surface spring, so that the set pressure is obtained.
The pressure regulating device is a pressure regulator which can act on the device of the invention, can generate pressure effect on the device of the invention when the unlocking switch is pressed, and meanwhile, the magnet at the bottom of the pressure regulating device can be mutually attracted with the pressure regulating magnet of the device of the invention, so that the rotating disc can be driven to rotate.
The device is used for resisting a magnetic field process under the action of a magnetic field, such as magnetic resonance: under the action of a magnetic field, an extra magnetic force effect is generated in a certain direction of the device, and the movable part of the device is a rotary table which can only rotate clockwise or anticlockwise and cannot move up and down, so that the rotary table cannot rotate clockwise or anticlockwise under the meshing locking effect of the locking teeth and the meshing teeth and cannot move under the action of the magnetic force in any direction of the outside, and the pressure is not influenced by the external magnetic field after being set.
Fluid flow process of the device: after entering from the inlet of the device, the fluid acts on the pressure regulating ruby ball, when the pressure of the fluid is higher than the pressure set by the device, the fluid can wash the pressure regulating ruby ball, and then the fluid passes through the pressure regulating part, flows through the anti-siphon part and the anti-backflow part and flows out of the device.
The device is used for preparing medical equipment for treating hydrocephalus, syringomyelia and other diseases. The pressure setting device can dynamically adjust the setting pressure according to different intracranial pressure conditions so as to adapt to the requirements of clinical treatment.
In the present application, unless specifically stated otherwise, the positional relationship of the respective components is based on the positional relationship shown in the drawings, and the apparatus, instruments, components, dimensions, other conditions, etc. employed are well known in the art or can be realized by those skilled in the art in light of the description of the application in combination with the prior art.
The description of the terms in the present invention shall be taken to be in control of the description in the present application, if it is different from the previous description in the art.
Drawings
FIG. 1 is a front cross-sectional view of the device of the present invention;
FIG. 2 is a side cross-sectional view of the device of the present invention;
FIG. 3 is a schematic view of the anti-reflux portion of the device of the present invention;
FIG. 4 is a schematic diagram of a pressure regulating device;
reference numerals in the figures: (1) an inlet; (2) pressure regulating ruby ball; (3) a pressure regulating spring plate; (4) a reference magnet; (5) a pressure-regulating magnet; (6) a turntable; (7) tightening the locking teeth; (8) a slider; (9) a curved spring; (10) a tooth; (11) an outlet; (12) pressing an unlock switch; (13) a center column; (14) a platen; (15) an inflow end; (16) a check ruby ball; (17) a spring; (18) an outflow end; (19) a housing; (20) a pressure regulating device.
Detailed Description
The invention will be further described with reference to the accompanying drawings
Embodiment 1: is a preferred implementation of the device of the present invention.
The pressure regulation process of the device under the action of the pressure regulating device comprises the following steps: as shown in fig. 1-4, the pressure regulating device (20) acts on the casing (19) to press the unlocking switch (12) so as to enable the unlocking switch to be subjected to the pressure action from the pressure regulating device (20), the middle column (13) moves inwards, under the action of the inclined surface of the middle column (13) and the inclined surface of the circular hollow part of the sliding block (8), the sliding block (8) moves on the rotary table (6), the curved surface spring (9) is compressed, the locking teeth (7) are separated from the meshing teeth (10), the pressure regulating magnet (5) is attracted with the magnet 'N-S' of the pressure regulating device, the pressure regulating magnet (5) rotates clockwise or anticlockwise along with the pressure regulating device (20), the rotary table (6) is driven to rotate clockwise or anticlockwise, the inclined bottom surface of the rotary table (6) generates corresponding pressure change to the pressure regulating spring (3), and finally the pressure acting on the pressure regulating ruby ball (2) generates corresponding pressure change. The pressure regulating device (20) is released to press the pressure action of the unlocking switch (12), and the sliding block (8) is attached to the locking teeth (7) and the meshing teeth (10) again under the elastic action of the curved surface spring (9), so that the set pressure is obtained.
Embodiment 2
Fluid flow process of the device: as shown in fig. 1-3, after entering from the inlet (1) of the device, the fluid acts on the pressure regulating ruby sphere (2), when the pressure of the fluid is higher than the pressure set by the device, the fluid can flush the pressure regulating ruby sphere (2), and the fluid passes through the pressure regulating part, flows through the anti-siphon part and flows out of the device.
Embodiment 3
Anti-reflux process of the device: as shown in fig. 3, when fluid passes through the anti-reflux portion of the device, the spring (17) is compressed under fluid pressure against the non-return ruby ball (16) so that fluid flows through the anti-reflux portion. When the fluid reversely enters the anti-backflow part, the anti-backflow part ensures that the anti-backflow ruby ball (16) is always sealed at the inflow end (15) due to the functions of the anti-backflow ruby ball (16) and the spring (17).
Embodiment 4
Anti-siphon process of the device: as shown in fig. 2, when fluid flows through the anti-siphon portion of the device, the pressure plate is opened under the action of pressure (14) from the fluid, and then the fluid flows out through the outlet (11) of the device, and when the outside of the outlet (11) of the device is in a negative pressure state, the pressure plate (14) is closed due to the siphon effect, so that excessive and rapid outflow of the fluid is prevented.
Embodiment 5
Pressure setting locking process of the device: as shown in figure 1, under the action of a magnetic field, an additional magnetic force is generated in a certain direction of the device, and as the movable part of the device is the rotary table (6) which can only rotate clockwise or anticlockwise and can not move up and down, under the action of the meshing locking action of the locking teeth (7) and the meshing teeth (10), the rotary table (6) can not rotate clockwise or anticlockwise and can not move under the action of the magnetic force in any direction of the outside, so that the pressure is not influenced by the external magnetic field after being set.
The above embodiments are intended to further illustrate the embodiments of the present invention, but not limit the present invention, and any simple modification, variation and equivalent structural changes made according to the technical spirit of the present invention still fall within the scope of the technical solutions of the present invention.
Claims (4)
1. A surgical adjustable differential pressure valve, comprising: a pressure regulating portion comprising: pressure regulating ruby ball, pressure regulating spring piece, pressure regulating magnet, rotary disk, locking tooth, curved spring and slide block; a housing portion comprising: with reference to the magnet, the meshing teeth press the unlocking switch and the center post; an anti-siphon part including a pressing plate which can be opened and closed; a liquid circulation portion comprising: an inlet, an outlet, and a cavity extending through the 3 parts of the pressure regulating part, the housing part, and the anti-siphon part; an anti-reflux portion comprising: a non-return ruby ball, a spring, an inflow end and an outflow end; the method is characterized in that: the pressure regulating ruby ball is provided with a pressure regulating elastic piece, and the pressure regulating ruby ball is provided with a pressure regulating elastic piece; the pressure regulating spring plate penetrates through the pressure regulating part from the upper inclined line downwards, and the upper part of the pressure regulating spring plate is attached to the slope-shaped bottom of the turntable; the pressure regulating magnets are positioned in the turntable, are symmetrically distributed, are respectively composed of one magnet and can rotate together with the turntable; the sliding block is positioned in the center of the inside of the turntable and can transversely slide in the turntable, the middle of the sliding block is a round hollowed-out part, the hollowed-out part is an inclined surface and is attached to the center column, the side of the sliding block is attached to the meshing teeth through locking teeth, and the rear of the locking teeth is connected with the curved spring; the middle column is positioned below the shell, is connected with the pressing unlocking switch, is cylindrical, and has a tip in a taper shape, is opposite to a rotary table round dot below and is attached to a round hollow part of the sliding block; the meshing teeth are positioned in the shell, and the inner side of the meshing teeth is attached to the locking teeth of the sliding block.
2. A surgical adjustable pressure differential valve as defined in claim 1, wherein: the upper part of the anti-siphon part is connected with the pressure regulating part, the lower part is connected with the outlet, and an openable pressing plate is arranged in the anti-siphon part to cover the outlet.
3. A surgical adjustable pressure differential valve as defined in claim 1, wherein: the inflow end of the anti-backflow part is connected with the far end of the outlet, the outflow end is arranged below the anti-backflow part, and the non-return ruby ball and the spring are arranged in the anti-backflow part.
4. Use of a surgically adjustable pressure differential valve according to claim 1 in the manufacture of a medical device for the treatment of hydrocephalus and syringomyelia.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710263985.0A CN107854772B (en) | 2017-04-21 | 2017-04-21 | Surgical adjustable differential pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710263985.0A CN107854772B (en) | 2017-04-21 | 2017-04-21 | Surgical adjustable differential pressure valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107854772A CN107854772A (en) | 2018-03-30 |
| CN107854772B true CN107854772B (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710263985.0A Active CN107854772B (en) | 2017-04-21 | 2017-04-21 | Surgical adjustable differential pressure valve |
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| Country | Link |
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| CN (1) | CN107854772B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110051920B (en) * | 2019-05-10 | 2021-04-16 | 李宽正 | Feedback regulation type ventricle-abdominal cavity shunt valve system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4595390A (en) * | 1983-07-21 | 1986-06-17 | Salomon Hakim | Magnetically-adjustable cerebrospinal fluid shunt valve |
| CN1150346A (en) * | 1995-08-09 | 1997-05-21 | 住友电装株式会社 | Connector device having spring mechanism |
| JPH1151238A (en) * | 1997-07-30 | 1999-02-26 | Mitsubishi Electric Corp | Flow rate control valve |
| CN1375047A (en) * | 1999-09-16 | 2002-10-16 | Vgm澳大利亚股份有限公司 | Liquid flow control valve |
| CN101813112A (en) * | 2010-05-10 | 2010-08-25 | 沈盘根 | Telescopic tube |
| DE102005013720A1 (en) * | 2005-03-22 | 2012-08-02 | Christoph Miethke Gmbh & Co Kg | Adjustable hydrocephalus valve for pressure equalization of liquor in skull of patient of hydrocephalus, and for use in adjusting system, is implanted to patient via hose line |
| CN204822508U (en) * | 2015-07-14 | 2015-12-02 | 徐江勇 | Structure is opened to a bowl cover suction nozzle key formula |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2421727C (en) * | 2000-09-11 | 2008-12-02 | Csf Dynamics A/S | A fluid shunt system and a method for the treatment of hydrocephalus |
| ES2297677T3 (en) * | 2004-03-27 | 2008-05-01 | CHRISTOPH MIETHKE GMBH & CO. KG | ADJUSTABLE HYDROCEPHAL VALVE. |
| US8322365B2 (en) * | 2010-08-17 | 2012-12-04 | Codman & Shurtleff, Inc. | Implantable adjustable valve |
-
2017
- 2017-04-21 CN CN201710263985.0A patent/CN107854772B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4595390A (en) * | 1983-07-21 | 1986-06-17 | Salomon Hakim | Magnetically-adjustable cerebrospinal fluid shunt valve |
| CN1150346A (en) * | 1995-08-09 | 1997-05-21 | 住友电装株式会社 | Connector device having spring mechanism |
| JPH1151238A (en) * | 1997-07-30 | 1999-02-26 | Mitsubishi Electric Corp | Flow rate control valve |
| CN1375047A (en) * | 1999-09-16 | 2002-10-16 | Vgm澳大利亚股份有限公司 | Liquid flow control valve |
| DE102005013720A1 (en) * | 2005-03-22 | 2012-08-02 | Christoph Miethke Gmbh & Co Kg | Adjustable hydrocephalus valve for pressure equalization of liquor in skull of patient of hydrocephalus, and for use in adjusting system, is implanted to patient via hose line |
| CN101813112A (en) * | 2010-05-10 | 2010-08-25 | 沈盘根 | Telescopic tube |
| CN204822508U (en) * | 2015-07-14 | 2015-12-02 | 徐江勇 | Structure is opened to a bowl cover suction nozzle key formula |
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| Publication number | Publication date |
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| CN107854772A (en) | 2018-03-30 |
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