A cerebrospinal fluid drainage collection device
By designing a cerebrospinal fluid drainage device with a three-way tube and anti-blockage components, and utilizing a combination of negative pressure pumping and shear hooking, the blockage problem in the cerebrospinal fluid drainage process was solved, achieving efficient and automated drainage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 重庆脑与智能科学中心
- Filing Date
- 2026-04-23
- Publication Date
- 2026-06-05
AI Technical Summary
Common blockage problems during cerebrospinal fluid drainage include physical, biological, and procedural/nursing factors, which affect drainage effectiveness and safety.
A cerebrospinal fluid drainage device was designed, comprising a three-way tube, a collection component, and an anti-blockage component. The anti-blockage component includes a telescopic electric cylinder, a piston, a pull hook, and a miniature electric cylinder. It resolves blockages through a combination of negative pressure pumping, shearing, and hooking, achieving automated drainage.
It effectively reduces manual operation, increases automation, quickly clears blockages, ensures smooth drainage, and reduces the risk of infection.
Smart Images
Figure REF-OBJ-1776914615459-000002 
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Abstract
Description
Technical Field
[0001] This invention relates to the field of medical device technology, specifically to a cerebrospinal fluid drainage and collection device. Background Technology
[0002] Blockage is one of the most common complications during cerebrospinal fluid (CSF) drainage and collection, which can lead to drainage failure, increased intracranial pressure, and even an increased risk of infection.
[0003] Common problems include cerebrospinal fluid (CSF) drainage obstruction, primarily caused by physical, biological, and procedural / nursing factors. Physical obstruction is the most frequent. In the early stages of drainage, the CSF contains blood, which can easily form blood clots that adhere to the lumen or side openings, causing blockage. Brain tissue debris and surgical residue may enter the lumen. During prolonged drainage or in patients with hyperproteinemia, CSF protein components deposit on the lumen wall, forming a "protein film" that narrows the lumen. Patient agitation and changes in position can also cause the catheter to shift, kink, or twist, hindering CSF flow.
[0004] Improper operation and care can also cause blockages. Failure to follow aseptic principles during flushing, excessive pressure or frequency, loose connections of the drainage device allowing air to enter, and hanging the drainage bag too high, resulting in insufficient cerebrospinal fluid flow and long-term stagnation, can all cause blockages.
[0005] Therefore, in order to solve this problem, we propose a combined drainage and collection device that crushes and drains superimposed blockages, which can efficiently solve the blockage problem during the cerebrospinal fluid drainage and collection process. Summary of the Invention
[0006] In view of the deficiencies in the prior art, the present invention provides a cerebrospinal fluid drainage and collection device to solve the problem of blockage during the cerebrospinal fluid drainage and collection process.
[0007] In a first aspect, the present invention provides a cerebrospinal fluid drainage and collection device, comprising: a drainage assembly, the drainage assembly including a drainage tube and a working chamber tube; wherein the drainage tube is a three-way tube; a first port of the drainage tube is connected to the patient, and a second port of the drainage tube is connected to the working chamber tube; a collection assembly, the collection assembly including a collection bottle and a collection tube, one end of the collection tube communicating with the collection bottle, and the other end of the collection tube communicating with the third port of the drainage tube; and an anti-blocking assembly, the anti-blocking assembly being disposed within the drainage assembly and located at the working chamber tube, and extending towards the drainage tube; the anti-blocking assembly including a telescopic electric cylinder, a piston, and a pull hook; the telescopic electric cylinder being installed within the working chamber tube, the output shaft of the telescopic electric cylinder being fixedly connected to one side of the piston, and the pull hook being installed on the other side of the piston; wherein the piston is slidably installed within the drainage tube and is sealed to the drainage tube, and the pull hook is close to the patient.
[0008] Furthermore, the drainage assembly also includes a medical pump, which is installed at the collection tube. In practical applications, this design can effectively provide negative pressure pumping, greatly reducing manual operation procedures and improving the degree of automation.
[0009] Furthermore, the anti-clogging component also includes a passage opening, and the piston has a fixed cover and a flexible abutment ring; the flexible abutment ring is installed on the outside of the fixed cover and abuts against the inner wall of the drainage tube; the fixed cover has a vent, and the passage opening component is installed at the vent and used to open and close the vent. In practical applications, the purpose of this design is to facilitate the opening and closing of the vent, thereby reducing air pressure fluctuations in the drainage tube when the piston moves in and out; this also facilitates the delivery of the aforementioned pull hook to the required area, making it easier to resolve blockages.
[0010] Furthermore, the ventilation component includes a rotating cylinder and a sealing plug. The rotating cylinder is mounted on the fixed cover, and the sealing plug is mounted on the rotating cylinder and is sealed to the ventilation port. In practical applications, the purpose of this design is to achieve a sealed venting port to prevent air pressure from flowing through. After the blockage is cleared, the piston is pulled back by the telescopic electric cylinder. Under negative pressure, the blockage is drained. When it approaches the third inlet, it flows into the collection bottle under the action of a medical pump, thus completing the clearing of the blockage.
[0011] Furthermore, the pull hook includes a fixed shaft tube and an entry cone; one end of the fixed shaft tube is fixedly mounted on the fixed cover; the entry cone is fixedly mounted on the opening at the other end of the fixed shaft tube. In practical applications, the purpose of this design is to facilitate inserting the pull hook deep into the blockage, thereby facilitating the resolution of the blockage problem from within.
[0012] Furthermore, the pull hook also includes a deformable fork hook, and the fixed shaft tube still has side openings, with two side openings located on both sides of the fixed shaft tube respectively; the deformable fork hook is installed inside the side openings and extends outwards to both sides. In practical applications, the purpose of this design is to solve the aforementioned blockage problem through a bilateral, deep shearing and pulling method.
[0013] Furthermore, the deformable fork hook includes a miniature electric cylinder, a fixed reamer, and a sliding reamer; the miniature electric cylinder is fixedly installed inside the fixed shaft tube; there are two fixed reamers and two sliding reamers; one end of each fixed reamer is hinged in pairs and rotatably installed inside the fixed shaft tube, close to the direction of the entry cone; one end of each sliding reamer is hinged in pairs and connected to the output shaft of the miniature electric cylinder; the fixed reamer and the sliding reamer are hinged together; the other end of each fixed reamer and the sliding reamer extends outward. In practical applications, the purpose of this design is to achieve a combined and superimposed function of shearing and hooking; in actual operation, the miniature electric cylinder acts as the overall power source; to achieve the shearing action, when the output shaft of the miniature electric cylinder reciprocates up and down, it will drive the sliding reamer to deflect up and down at the hinge point with the fixed reamer, thus creating a relative up and down displacement with the fixed reamer, forming a shearing-like action; in this way, the blockage can be directly sheared, thus solving the blockage problem and facilitating subsequent drainage work.
[0014] Furthermore, the sliding reamer has a central groove, and the fixed reamer has a hinge block, which is slidably mounted on the central groove. In practical applications, the purpose of this design is to achieve both shearing and impact effects during the sliding process of the groove, further enhancing the shearing effect on blockages. Simultaneously, it facilitates retraction, allowing the fixed reamer to be stored in the side opening. In actual operation, when the output shaft of the micro-electric cylinder moves backward, the sliding reamer moves towards the side opening. At this time, its groove design increases the rotational stroke of the fixed reamer, and guided by the groove, the fixed reamer further retracts inward, achieving a storage effect. When shearing blockages is required, the sliding on the groove creates an impact effect, improving the shearing effect.
[0015] As can be seen from the above technical solution, the beneficial effects of the cerebrospinal fluid drainage and collection device provided by the present invention are as follows: In practical applications, the drainage tube of this design adopts a three-port design, which effectively facilitates the fixed connection of the working chamber tube, thereby facilitating the operation of the anti-blocking component; Meanwhile, the collection components used enable effective collection and facilitate the collection of cerebrospinal fluid; Furthermore, the anti-clogging components used not only have the negative pressure of the piston and the pressure drainage and unblocking effect, but also have the ability to hook and pull out blockages, thus accelerating the resolution of blockage problems. Attached Figure Description
[0016] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to scale.
[0017] Figure 1 A front view of a cerebrospinal fluid drainage and collection device provided in an embodiment of the present invention; Figure 2 for Figure 1 The enlarged structural diagram at point A is shown below; Figure 3 This is a top view of the through-cavity component on the piston in this invention; Figure 4 This is a schematic diagram of the unfolding and shearing structure of the deformable fork hook on the fixed shaft tube in this invention; Figure 5 This is a schematic diagram of the structure in which the deformable fork hook is housed inside the fixed shaft tube in this invention; Figure label: Drainage assembly 1, drainage tube 11, working chamber tube 12, collection assembly 2, collection liquid bottle 21, collection tube 22, medical pump 23, anti-clogging assembly 3, telescopic electric cylinder 31, piston 32, fixed cover 321, venting port 3211, flexible abutment ring 322, pull hook 33, cavity opening component 34, rotating cylinder 341, sealing plug 342, fixed shaft tube 331, side opening 3311, entry cone 332, deformable fork hook 333, miniature electric cylinder 3331, fixed reamer 3332, sliding reamer 3333, intermediate slide groove 301, hinge block 302. Detailed Implementation
[0018] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.
[0019] The basic implementation examples are as follows: Figures 1 to 5 As shown: like Figures 1-5 As shown in the figure, the cerebrospinal fluid drainage and collection device provided in this embodiment can solve the problem of blockage during the cerebrospinal fluid drainage and collection process.
[0020] This invention provides a cerebrospinal fluid drainage and collection device, comprising: a drainage assembly 1, which includes a drainage tube 11 and a working chamber tube 12; wherein the drainage tube 11 is a three-way tube; the first port of the drainage tube 11 is connected to the patient, and the second port of the drainage tube 11 is connected to the working chamber tube 12; a collection assembly 2, which includes a collection bottle 21 and a collection tube 22, one end of the collection tube 22 communicating with the collection bottle 21, and the other end of the collection tube 22 communicating with the third port of the drainage tube 11; and an anti-blockage assembly 3. The anti-blockage component 3 is disposed within the drainage component 1 and located at the working chamber 12, extending towards the drainage tube 11. The anti-blockage component 3 includes a telescopic electric cylinder 31, a piston 32, and a pull hook 33. The telescopic electric cylinder 31 is installed within the working chamber 12, and its output shaft is fixedly connected to one side of the piston 32. The pull hook 33 is installed on the other side of the piston 32. The piston 32 is slidably installed within the drainage tube 11 and is sealed to it. The pull hook 33 is positioned closer to the patient. In practical applications, the drainage tube 11 of this design features a three-port design, which effectively and conveniently fixes the working chamber 12, thereby facilitating the operation of the anti-blockage component 3. Simultaneously, the collection component 2 enables effective collection, facilitating the collection of cerebrospinal fluid. Furthermore, the anti-blockage component 3 not only provides negative pressure from the piston 32 for pressure drainage and unblocking but also hooks and pulls out obstructions, thus accelerating the resolution of blockage problems.
[0021] In this embodiment, to improve the overall level of automation, the drainage component 1 further includes a medical pump 23, which is installed at the collection tube 22. In practical applications, this design can effectively provide a negative pressure pumping effect, greatly reducing manual operation and improving automation.
[0022] To further reduce the impact of pressure, in this embodiment, the anti-clogging component 3 is also provided with a passage cavity 34. The piston 32 is provided with a fixed cover 321 and a flexible abutment ring 322. The flexible abutment ring 322 is installed on the outside of the fixed cover 321 and abuts against the inner wall of the drainage tube 11. The fixed cover 321 is provided with a vent 3211, and the passage cavity 34 is installed at the vent 3211 and is used to open and close the vent 3211. In practical applications, the purpose of this design is to facilitate the opening and closing of the vent 3211, thereby reducing the air pressure fluctuation of the drainage tube 11 when the piston 32 moves in and out. This facilitates the delivery of the aforementioned pull hook 33 to the required area, making it easier to resolve blockages.
[0023] Meanwhile, to achieve opening and closing, in this embodiment, the cavity component 34 includes a rotating cylinder 341 and a sealing plug 342. The rotating cylinder 341 is mounted on the fixed cover 321, and the sealing plug 342 is mounted on the rotating cylinder 341 and is sealed to the venting port 3211. In practical application, the purpose of this design is to seal the venting port 3211 to ensure that air pressure is not allowed to pass through. In this way, after approaching and clearing the blockage, the piston 32 is pulled back by the telescopic electric cylinder 31. Under the action of negative pressure, the blockage is drained. When it approaches the third tube opening, it flows into the collection bottle 21 under the action of the medical pump 23. In this way, the work of clearing the blockage is completed. The sealing plug 342 is made of flexible silicone material.
[0024] In this embodiment, to facilitate insertion into the blockage, the pull hook 33 includes a fixed shaft tube 331 and an entry cone 332. One end of the fixed shaft tube 331 is fixedly mounted on the fixed cover 321; the entry cone 332 is fixedly mounted on the opening at the other end of the fixed shaft tube 331. In practical applications, the purpose of this design is to facilitate the insertion of the pull hook 33 into the blockage, thereby facilitating the resolution of the blockage problem within it.
[0025] To improve efficiency, in this embodiment, the pull hook 33 further includes a deformable fork hook 333, and the fixed shaft tube 331 is provided with two side openings 3311, located on both sides of the fixed shaft tube 331. The deformable fork hook 333 is installed inside the side openings 3311 and extends outward to both sides. In practical applications, the purpose of this design is to solve the aforementioned blockage problem through a deep, bilateral shearing and pulling method.
[0026] Furthermore, in order to achieve a combined application of shearing and hooking, in this embodiment, the deformable fork hook 333 includes a miniature electric cylinder 3331, a fixed reamer 3332, and a sliding reamer 3333; the miniature electric cylinder 3331 is fixedly installed inside the fixed shaft tube 331; two fixed reamers 3332 and two sliding reamers 3333 are provided; one end of each fixed reamer 3332 is hinged together and rotatably installed inside the fixed shaft tube 331, close to the direction of the entry cone 332; one end of each sliding reamer 3333 is hinged together and connected to the output shaft of the miniature electric cylinder 3331; the fixed reamer 3332 and the sliding reamer 3333 are hinged together; the other end of each fixed reamer 3332 and the sliding reamer 3333 extends outward. In practical applications, the purpose of this design is to achieve a combined and superimposed function of shearing and hooking. In actual operation, the miniature electric cylinder 3331 serves as the overall power source. To achieve the shearing action, when the output shaft of the miniature electric cylinder 3331 reciprocates up and down, it will drive the sliding reamer 3333 to deflect up and down at the hinge point with the fixed reamer 3332, thus creating a relative vertical displacement with the fixed reamer 3332, forming a shearing-like action. In this way, the blockage can be directly sheared, thereby solving the blockage problem and facilitating subsequent drainage work.
[0027] To facilitate storage and achieve an impact effect, in this embodiment, the sliding reamer 3333 is provided with a central groove 301, and the fixed reamer 3332 is provided with a hinge block 302, which is slidably installed in the central groove 301. In practical application, the purpose of this design is to achieve both shearing and an impact effect during the sliding process of the groove, further enhancing the shearing effect on obstructions. Simultaneously, it facilitates retraction, allowing the fixed reamer 3332 to be stored within the side opening 3311. In actual operation, when the output shaft of the micro-electric cylinder 3331 moves backward, the sliding reamer 3333 will move towards the side opening 3311. At this time, its groove design increases the rotational stroke of the fixed reamer 3332. Guided by its groove, the fixed reamer 3332 will further retract inward, thus achieving a storage effect. When shearing obstructions is required, the sliding on its groove will create an impact effect, improving the shearing effect.
[0028] In summary, this cerebrospinal fluid drainage and collection device is not only rationally designed, but its combination of negative pressure drainage and shearing impact hooking to remove blockages greatly improves the anti-blockage effect; moreover, it is highly automated, convenient, and practical. Therefore, this device is suitable for industry promotion.
[0029] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.
Claims
1. A cerebrospinal fluid drainage and collection device, characterized in that, include: A drainage assembly, comprising a drainage tube and a working chamber tube; The drainage tube mentioned above is a T-junction tube; The first port of the drainage tube is connected to the patient, and the second port of the drainage tube is connected to the working chamber tube; A collection assembly, comprising a collection bottle and a collection tube, wherein one end of the collection tube is connected to the collection bottle and the other end of the collection tube is connected to the third port of the drainage tube; and An anti-blockage component is disposed within the drainage component and located at the working chamber, extending towards the drainage tube. The anti-blockage component includes a telescopic electric cylinder, a piston, and a pull hook. The telescopic electric cylinder is installed within the working chamber, and its output shaft is fixedly connected to one side of the piston. The pull hook is installed on the other side of the piston. The piston is slidably installed within the drainage tube and is sealed to the drainage tube. The pull hook is located closer to the patient.
2. The cerebrospinal fluid drainage and collection device according to claim 1, characterized in that, The drainage assembly also includes a medical pump, which is installed at the collection tube.
3. The cerebrospinal fluid drainage and collection device according to claim 1, characterized in that, The anti-clogging component is further provided with a passage cavity, and the piston is provided with a fixed cover and a flexible abutment ring; the flexible abutment ring is installed on the outside of the fixed cover and abuts against the inner wall of the drainage tube; the fixed cover is provided with a venting port, and the passage cavity component is installed at the venting port and is used to open and close the venting port.
4. The cerebrospinal fluid drainage and collection device according to claim 3, characterized in that, The ventilation cavity component includes a rotating cylinder and a sealing plug. The rotating cylinder is mounted on the fixed cover, and the sealing plug is mounted on the rotating cylinder and is sealed to the ventilation cavity opening.
5. A cerebrospinal fluid drainage and collection device according to claim 3, characterized in that, The pull hook includes a fixed shaft tube and an entry cone; one end of the fixed shaft tube is fixedly installed on the fixed cover; the entry cone is fixedly installed on the opening of the other end of the fixed shaft tube.
6. A cerebrospinal fluid drainage and collection device according to claim 5, characterized in that, The pull hook also includes a deformable fork hook, and the fixed shaft tube is also provided with a side opening. There are two side openings, which are respectively located on both sides of the fixed shaft tube. The deformable fork hook is installed in the side opening and extends outward to both sides.
7. A cerebrospinal fluid drainage and collection device according to claim 6, characterized in that, The deformable fork includes a miniature electric cylinder, a fixed reamer, and a sliding reamer; the miniature electric cylinder is fixedly installed inside the fixed shaft tube. Two fixed reamers and two sliding reamers are provided; wherein one end of the fixed reamers is hinged in pairs and rotatably mounted in the fixed shaft tube, close to the direction of the entry cone; one end of the sliding reamers is hinged in pairs and connected to the output shaft of the miniature electric cylinder; The fixed reamer and the sliding reamer are hinged together; The other ends of both the fixed reamer and the sliding reamer extend outward.
8. A cerebrospinal fluid drainage and collection device according to claim 7, characterized in that, The sliding reamer has a central groove, and the fixed reamer has a hinge block, which is slidably mounted on the central groove.