Micro-infusion device for brain

Abstract

The utility model provides a brain trace infusion device, which comprises a filter, an extension tube, a filter connecting device, a tube cavity fixing device, a skull fixing component and a brain infusion puncture component, one end of the extension tube is connected with the filter, the filter connecting device is connected with the other end of the extension tube, and the filter connecting device is connected with the other end of the extension tube. The filter device is connected with the brain infusion puncture assembly, the lumen fixing device is connected with the filter device, the skull fixing component is connected with the lumen fixing device, and the brain infusion puncture assembly is connected with the filter connecting device, the lumen fixing device and the skull fixing component into a whole. The brain micro-drug infusion system not only solves the problem that no brain micro-drug infusion system exists clinically at present, but also has the advantages of being accurate and controllable in infusion drug amount, free of liquid leakage and free of exosmosis in the whole pipeline, and meanwhile solves the problem that multi-target injection in the brain is difficult to implement clinically.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, concretely is a brain trace infusion device. BACKGROUND

[0002] With the development and application of gene therapy, cell therapy and molecular biological drug therapy of nervous system diseases, more and more refractory nervous system diseases need to be precisely infused into the target tissue of patient's brain under the assistance of frame brain stereotactic instrument or frameless neural navigation or surgical robot, therefore, brain trace infusion drug system that is used in cooperation with brain stereotactic instrument or frameless neural navigation system or surgical robot is needed in clinic. At present, gene therapy, cell therapy and molecular biological drug therapy of nervous system diseases by means of intracerebral target drug injection are mainly concentrated in preclinical research, and extensive clinical application is expected to be realized soon, however, there is still lack of brain trace drug infusion system that is safe and convenient to use in clinic.

[0003] The existing drug injection system is mainly used in animal brain experimental research, and the equipment is rough and cannot be used in human brain. A few drug injections for human brain research are carried out by instruments that are "patched" together, and there are problems of complicated structure, frequent disassembly during pipeline fixing process, easy to cause inaccurate injection amount due to gas in drug infusion pipeline, drug leakage and liquid loss caused by frequent disassembly during pipeline fixing process, easy to cause damage caused by pollution of surgical instruments or brain operation area, difficult to implement intracerebral multi-target injection, and inability to effectively treat, and the like. The brain trace infusion device provided by the utility model solves the above problems. UTILITY MODEL CONTENT

[0004] In view of the defects in the prior art, the utility model aims at providing a brain trace infusion device to solve the problems in the background art, and has the advantages of precise control of infusion drug amount, no liquid leakage in the whole pipeline and no exosmosis.

[0005] In order to achieve the above purpose, the utility model is implemented by the following technical scheme: a brain trace infusion device comprises a filter, an extension pipe, a filter connecting device, a pipe cavity fixing device, a skull fixing component and a brain infusion puncture assembly, one end of the extension pipe is connected with the filter, the filter connecting device is connected with the other end of the extension pipe, the pipe cavity fixing device is connected with the filter device, the skull fixing component is connected with the pipe cavity fixing device, and the brain infusion puncture assembly is connected with the filter connecting device, the pipe cavity fixing device and the skull fixing component to form an integral whole.

[0006] In the brain micro infusion device, the brain infusion puncture assembly comprises a drainage tube body, a hollow support pipe, an outer hose, a puncture head and a support pipe fixing cover, the support pipe fixing cover is connected with the hollow support pipe, the drainage tube body is located in the hollow support pipe, the hollow support pipe is located in the outer hose, and the end, away from the skull fixing part, of the drainage tube body and the end, away from the skull fixing part, of the outer hose form the puncture head.

[0007] In the brain micro infusion device, the filter connecting device comprises a contraction nut, a contraction support and a drainage tube contraction body, the contraction nut is sleeved outside the contraction support and is used for fixing the outside of the contraction support, the contraction support is sleeved outside the drainage tube contraction body, and the contraction support and the drainage tube contraction body have concentric through holes used for accommodating the drainage tube body to pass through.

[0008] In the brain micro infusion device, the lumen fixing device comprises a base and a fixing cover, the base is located inside the fixing cover, and the fixing cover is connected with the skull fixing part.

[0009] In the brain micro infusion device, the filter connecting device is a detachable structure and is used for connecting the filter.

[0010] In the brain micro infusion device, one end, close to the support pipe fixing cover, of the hollow support pipe is provided with a third opening used for accommodating the drainage tube body to pass through.

[0011] In the brain micro infusion device, the base is internally provided with a first opening, a first groove and a second groove, one side of the base is provided with the first groove, the second groove is located at the other side of the base, and the first opening is used for fixing the drainage tube body.

[0012] In the brain micro infusion device, a clamping hook is further arranged, and the clamping hook is connected with the second groove.

[0013] In the brain micro infusion device, one end, away from the lumen part, of the skull fixing part is provided with a thread, and the thread is used for connecting the skull fixing part with the skull of a patient.

[0014] In the brain micro infusion device, one side of the fixing cover is provided with a second opening, and the second opening is used for preventing the drainage tube body from being displaced.

[0015] The brain micro infusion device has the advantages that the brain micro infusion device is provided with the skull fixing part, the lumen part and the brain infusion puncture assembly, the drainage tube body is fixed on the skull of a patient through the skull fixing part and the lumen part, the puncture head is used for puncturing the brain of the patient, and the brain micro infusion device is convenient to use.

[0016] 1. The brain micro infusion device provided by the utility model cooperates with the skull fixing part through the lumen fixing device, so that the system can be stably fixed on the skull of the patient, reduces the risk of movement or falling off of the system during use, and thus guarantees the accuracy and safety of infusion. The brain infusion puncture assembly is connected with the filter connecting device, the lumen fixing device and the skull fixing part to form an integral whole, the integrated design simplifies the operation process, reduces the operation difficulty and time cost, improves the work efficiency, and improves the treatment effect.

[0017] 2. The utility model discloses can effectively remove the impurity and microparticle in the drug through the filter and filter connecting device, ensure that the drug does not leak or be contaminated externally in the infusion process.

[0018] 3. The utility model discloses can realize simultaneous ipsilateral intracerebral multi-target injection and bilateral intracerebral multi-target injection through the precise cooperation of the skull fixing part and the lumen fixing device according to the clinical need, which is convenient to use, saves the drug infusion time, shortens the clinical anesthesia time, and is beneficial to the rapid recovery of the patient after anesthesia.

[0019] 4. The utility model discloses the hollow support pipe of side opening, this design can effectively avoid the problem of unsmooth pipeline and unable to infuse drugs after the drainage tube is fixed. DRAWINGS

[0020] Figure 1 It is an explosion schematic view of a skull fixing device provided by the embodiment of the application;

[0021] Figure 2 It is a partial enlarged view of a skull fixing device provided by the embodiment of the application;

[0022] Figure 3 It is an external view of a skull fixing device provided by the embodiment of the application;

[0023] Figure 4 It is an external structure view of a brain micro infusion device;

[0024] Figure 5 It is a hollow support pipe placement state stereogram of a brain micro infusion device;

[0025] Figure 6 It is an explosion schematic view of a hollow support pipe structure of a brain micro infusion device;

[0026] Figure 7 It is a side hole support pipe placement state stereogram of a brain micro infusion device;

[0027] Figure 8An exploded schematic view of a side hole support tube structure of a brain micro infusion device according to the present application;

[0028] 1. A lumen fixation device; 10, a base; 101, a first opening; 102, a first groove; 103, a second groove; 11, a fixation cap; 111, a second opening;

[0029] 2. A clamping hook;

[0030] 3. A skull fixation component; 30, a third groove; 31, a thread;

[0031] 4. A filter;

[0032] 5. An extension tube;

[0033] 6. A filter connecting device; 61, a shrink nut; 62, a shrink support; 63, a drainage tube shrink body;

[0034] 7. A brain infusion puncture assembly; 71, a drainage tube body; 72, a hollow support tube; 721, a third opening; 73, an outer layer hose; 74, a puncture head; 75, a support tube fixation cap; DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0036] Embodiment 1

[0037] The applicant finds that there is no skull fixation device for brain micro drug infusion tube in the prior art, and the brain micro drug injection needs to provide a stable fixation effect for the brain micro drug infusion tube, so as to ensure that the infusion tube can be accurately positioned to the target brain area, thereby realizing precise injection. Therefore, a skull fixation device for brain micro drug infusion tube is urgently needed in clinical practice.

[0038] Therefore, in order to solve the above problems, the applicant provides a skull fixation device, please see Figure 2 , Figure 2 A partial enlarged view of a skull fixation device according to the present application is provided. The skull fixation device of the brain micro infusion system comprises a base 10, a first opening 101, a first groove 102, a second groove 103, and a clamping hook 2.

[0039] Wherein, the base 10, the first opening 101 is arranged in the base 10, and a first groove 102 is arranged on one side of the base 10; a second groove 103 is arranged on the other side of the base 10, and a clamping hook 2 is arranged in the second groove 103, so that the drug infusion tube can be stably fixed to ensure that the drug infusion tube cannot be easily moved in the intracranial cavity.

[0040] The above also includes a skull fixing component 3, and the base 10 can be arranged in the skull fixing component 3. The arrangement of the skull fixing component 3 not only enhances the stability of the entire device, but also ensures that the base 10 can be closely and accurately attached to the skull fixing component 3.

[0041] In addition, a fixing cover 11 can also be included, which is connected to one end of the skull fixing component 3 provided with a third groove 30. The fixing cover 11 can also be connected to the skull fixing component 3 through a thread 31. The design of the thread 31 not only ensures that the fixing cover 11 can be closely attached to the skull fixing component 3, but also provides adjustable tightness so that the doctor can fine-tune according to the needs of the operation.

[0042] At the same time, the close fit of the fixing cover 11 and the skull fixing component 3 further enhances the stability and reliability of the entire device, providing a more stable and safe support environment for brain micro-infusion operations. Not only does it simplify the surgical operation process, but it also improves the accuracy of the operation and the recovery effect of the patient.

[0043] Wherein, one end of the skull fixing component 3 can be provided with a third groove 30 for accommodating the base 10, so as to achieve close connection between the base 10 and the skull fixing component 3, improve the stability of the entire device, simplify the installation process, and enable the doctor to complete the fixation of the device more quickly. In addition, the inside of the skull fixing component 3 can be a soft hollow tube, preferably made of silicone, for allowing the drug infusion tube to pass through without kinking.

[0044] Referring to Figure 3 , Figure 3 The external view of the skull fixing device provided by the embodiment of the present application is shown in FIG. 1. The other end of the skull fixing component 3 is provided with a ring of threads 31 for matching with the thread 31 hole on the surface of the patient. By rotating the skull fixing component 3, the thread 31 thereof can be closely combined with the thread 31 hole of the patient's skull, which can effectively prevent any accidental loosening or displacement, ensuring that the skull fixing component 3 can be firmly fixed on the patient's skull. This design not only provides stable support for subsequent brain micro-infusion operations, but also enhances the safety of the operation and the comfort of the patient.

[0045] In order to accommodate the drainage tube body to pass through, ensure the continuity and stability of the infusion system, a second opening 111 can be provided on the fixing cover 11, which can make the drainage tube body pass through the fixing cover 11 without obstruction, effectively prevent the displacement or falling of the drainage tube body during the operation, and further ensure the stability of the entire infusion system.

[0046] At the same time, the surface of the fixing cover 11 is provided with anti-skid texture, which increases the stability of the doctor when fixing the fixing cover 11 on the cover, ensures that the doctor can firmly hold the fixing cover 11, accurately and quickly operates, improves the safety of the operation, reduces the misoperation behavior caused by hand sliding, and improves the overall efficiency of the operation. It can effectively increase the friction between the fixing cover 11 and the doctor's hand, so that even if the hands sweat or other lubricants exist during the operation, the doctor can firmly hold the fixing cover 11.

[0047] In this embodiment, the skull fixing component 3 can be composed of high molecular material or titanium alloy. High molecular material is favored for its light weight, corrosion resistance, good biocompatibility and other characteristics. It can effectively reduce the burden of patients, at the same time, reduce the rejection reaction after operation, promote the patients to recover faster. In addition, high molecular material also has good processing performance, which can be customized into various shapes and sizes of fixing components according to actual needs, to meet different surgical needs. Titanium alloy becomes another important choice for skull fixing component 3 because of its high strength, wear resistance, corrosion resistance and other excellent performance. The firmness of titanium alloy can ensure the stability and reliability of the fixing component during the operation, and it is not easy to deform or damage. At the same time, its good biocompatibility also ensures the safety of patients after operation.

[0048] Working principle: In the use process, we first use the positioning guide device, combined with high-precision image guidance technology, such as frame brain stereotactic instrument, neural navigation system or advanced surgical robot mechanical arm, to accurately determine the target point position of the head. Then, choose the appropriate drilling kit to perform detailed skull drilling operation, and then place the threaded end 31 of the skull fixing component 3 on the patient's skull, and tightly screw the skull fixing component 3 on the skull under the accurate guidance of the positioning device.

[0049] With the help of the positioning guide device and the accurate assistance of the stereotactic instrument or the mechanical arm of the surgical robot, we will send the brain micro-injection catheter through the positioning guide device and the head skull fixation device into the brain until the preset target position. At this time, we will put the base 10 into the third groove 30 of the skull fixation part 3, and stably place the injection catheter in the first opening 101. Then, we will gently move the clamping hook 2 by hand or using the holding device, so that it smoothly enters the second groove 103, thereby tightly clamping the drug infusion tube and ensuring its stability. Finally, we will cover the fixing cover 11 to ensure that the brain micro-injection catheter smoothly passes out of the second opening 111, so as to effectively prevent the brain micro-injection catheter from being displaced during use, and ensure the accuracy and safety of the operation.

[0050] Embodiment 2

[0051] The embodiment of the present application also provides a brain micro-infusion system, which comprises a skull fixation device and a brain micro-infusion device as described in the above embodiment, and the brain micro-infusion device is matched with the skull fixation device to solve the current clinical difficulty of lacking a brain micro-drug infusion system.

[0052] The present application finds that the existing drug injection system is mainly used in animal brain experimental research, and the equipment is rough and cannot be used in human brain; a few drug injections for human brain research are performed by "patchwork" instruments, which have the problems of complicated structure, frequent disassembly during pipeline fixation process, easy to cause gas in the drug infusion pipeline to cause inaccurate injection, frequent disassembly during pipeline fixation process to cause drug leakage and liquid loss, and easy to cause damage due to pollution of surgical instruments or brain operation area, and difficult to implement multiple target injection in the brain, cannot effectively treat, and is difficult to meet the clinical use. Therefore, the present application provides a brain micro-infusion device.

[0053] The brain micro-drug infusion device comprises a filter 4, an extension tube 5, a filter connecting device 6, a pipeline fixation device 1, a skull fixation part 3 and a brain infusion puncture assembly 7.

[0054] The extension tube 5 is connected with the filter 4 at one end, the filter connecting device 6 is connected with the other end of the extension tube 5, the pipeline fixation device 1 is connected with the filter connecting device 6, the skull fixation part 3 is connected with the pipeline fixation device 1, and the brain infusion puncture assembly 7 is connected with the filter connecting device 6, the pipeline fixation device 1 and the skull fixation part 3 as a whole.

[0055] The filter 4 and the filter connecting device 6 can effectively remove impurities and particles in the drug, ensuring that the drug does not leak or be contaminated externally during infusion. In addition, the threaded hole 31 at the end of the skull fixing part 3 away from the base 10 can connect the skull fixing part 3 with the patient's skull, ensuring that the system can be firmly fixed on the patient's skull, reducing the risk of movement or falling of the system during use, thereby ensuring the accuracy and safety of infusion. The brain infusion puncture assembly 7 is connected with the filter connecting device 6, the lumen fixing device 1 and the skull fixing part 3 as a whole, which simplifies the operation process and makes the structure simpler. The drug infusion operation can be completed without disassembling the pipeline, saving time and improving work efficiency.

[0056] First, referring to Figure 8 The brain infusion puncture assembly 7 is composed of a drainage tube body 71, a hollow support tube 72, an outer hose 73, a puncture head 74 and a support tube fixing cover 75. The support tube fixing cover 75 is arranged on the upper part of the hollow support tube 72, the drainage tube body 71 is placed inside the hollow support tube 72, and the hollow support tube 72 is inside the outer hose 73. In terms of specific dimensions, the outer hose 73 can be 240-260mm long, preferably 250mm, and 2.0-5.0mm in diameter; the drainage tube body 71 can be 500mm long and 0.2-0.5mm in diameter. The end of the intracranial section of the drainage tube body 71 away from the skull fixing part 3 forms a puncture head 74 with the end of the outer hose 73 away from the skull fixing part 3. The diameter of the puncture head 74 tapers from large to small in a conical shape, which can be made of high polymer material or ceramic material. This design makes the puncture head 74 maintain high stability and accuracy during puncture, and can easily penetrate the brain tissue, providing a strong guarantee for the smooth insertion of the drainage tube body 71.

[0057] At the same time, the sharpness and firmness of the puncture head 74 can greatly reduce the resistance during puncture, improve the puncture efficiency, and reduce the patient's pain. In addition, the conical shape of the puncture head 74 can prevent the infusion liquid from flowing backward along the drainage catheter tip.

[0058] In order to prevent the drug from leaking or being externally contaminated during infusion, the application also provides a filter 4 and a filter connecting device 6, wherein the filter connecting device 6 is composed of a shrink nut 61, a shrink bracket 62 and a drainage tube shrink body 63. The shrink nut 61 can be tightly sleeved on the outside of the shrink bracket 62, and by rotating the shrink nut 61, the shrink nut 61 can firmly fix the position of the shrink bracket 62, preventing the shrink bracket 62 from loosening or shifting during infusion. The shrink bracket 62 is sleeved on the outside of the drainage tube shrink body 63, and both are designed with a concentric through hole which can accommodate the drainage tube body 71 to pass through, thereby ensuring the smoothness of the infusion channel.

[0059] The filter connecting device 6 can be detachably connected, which specifically includes that the drainage tube shrink body 63 is provided with a groove or a thread 31 structure, when it is needed to connect the filter connecting device 6 with the extension tube 5, only need to align the one end of the extension tube 5 with the corresponding groove or thread 31 position on the drainage tube shrink body 63, and then rotate or push the extension tube 5, so that the buckle or thread 31 structure on one end of the extension tube 5 can be engaged with the groove or thread 31 on the drainage tube shrink body 63, that is, the filter connecting device 6 and the extension tube 5 can be tightly connected. When it is needed to detach the filter connecting device 6 from the extension tube 5, only need to follow the reverse operation steps, that is, rotate or pull the unlocking mechanism, so that the two can be easily separated without additional tools or complex operation.

[0060] Further, when drilling and fixing the skull, first use the positioning guide device combined with the framed brain stereotactic instrument or the neural navigation system or the surgical robot mechanical arm to determine the head target position, use the drilling kit to drill the skull, and ensure the accuracy and safety of drilling. Use the electrocoagulation needle to electrocoagulate the dura mater, and install the head skull fixing part 3 under the guidance of the positioning device. The end of the skull fixing part 3 away from the base 10 is provided with a thread 31, which is used to connect the skull fixing part 3 with the patient's skull, and ensure the stability and safety of the whole infusion system.

[0061] In addition, the lumen fixing device 1 can include a base 10 and a fixing cover 11, the base 10 is located inside the fixing cover 11, the fixing cover 11 is connected with the end of the skull fixing part 3 away from the puncture head 74, which can ensure the continuity and stability of the whole infusion system, and also enables the drainage tube body 71 to be accurately positioned at the preset target position, thereby greatly improving the accuracy and safety of infusion. Moreover, the side of the fixing cover 11 is provided with a second opening 111 for preventing the drainage tube body 71 from shifting or falling off during use, which can also maximize the stability of the drainage tube body 71.

[0062] Meanwhile, the base 10 can be internally provided with a first opening 101 located outside the drainage tube body 71 at one end close to the fixed cover 11, when the clamping hook 2 is pushed to clamp the drainage tube body 71, the clamping hook 2 at the first opening 101 can firmly clamp the drainage tube body 71, thereby further improving the stability of the drainage tube body 71.

[0063] In addition, an annular cavity can be formed between the drainage tube body 71 and the outer layer hose 73, in which the retractable hollow support tube 72 is accommodated, the length can be 300mm, the diameter can be 1.5-4.5mm, and the hollow support tube 72 can be composed of a high polymer material or ceramic. The retractable design of the hollow support tube 72 can enable medical personnel to adjust the position and length of the support tube according to needs to adapt to different surgical requirements. The end of the hollow support tube 72 close to the support tube fixed cover 75 is provided with a third opening 721 for accommodating the drainage tube body 71 to pass through, and the drainage tube body 71 can be separated from the hollow support tube 72 through the third opening 721. The design of the third opening 721 makes the operation more simple and fast, and medical personnel can quickly separate the drainage tube body 71 from the hollow support tube 72 through the third opening 721.

[0064] The working principle is as follows: in use, first, the target point position of the head is accurately determined by using the positioning guide device combined with the framed technology of image guidance, such as a framed brain stereotactic instrument, a neural navigation system or a surgical robot mechanical arm, then a professional drilling kit is used to drill a suitable hole on the skull, then the dura mater is penetrated by the electrocoagulation needle, the head skull fixing part 3 is installed under the guidance of the positioning device and the stability thereof is determined, then one end of the filter connecting device 6 is connected with the drainage tube body 71 and the other end is connected with the filter 4 with the extension tube 5, the distal end of the extension tube 5 is connected with a medicine injector, forming a complete infusion system. In order to ensure the smoothness and sterility of the infusion system, the air in the infusion pipeline system is discharged by using a micro-pump, then the puncture head 74 is accurately inserted into the brain to the target point through the positioning guide device and the head skull fixing part 3 under the assistance of the positioning guide device and the stereotactic instrument or the surgical robot mechanical arm. The skull fixing part 3 is screwed, the hollow support tube 72 is retracted and the drainage tube body 71 is taken out from the third opening 721 and separated from the outer layer hose 73. Finally, the base 10 is placed between the skull fixing part 3 and the fixed cover 11, after the skull fixing part 3 is connected with the fixed cover 11, the fixed cover 11 is rotated clockwise and fixed, and the brain micro-injection system can infuse medicine into the brain.

[0065] Embodiment 3:

[0066] In the utility model, still can see Figure 6 It is shown that the hollow support tube 72 does not need to be provided with the third opening 721, and the drainage catheter can also be separated out. The specific mode is as follows:

[0067] The annular cavity is formed between the drainage tube body 71 and the outer tube 73, and the retractable hollow support tube 72 is accommodated in the annular cavity, with a length of 300 mm and a diameter of 2 mm, and is made of a high polymer material or ceramic.

[0068] In use, first, the target point position of the head is accurately determined by using the positioning guide device in combination with the framed technique of image guidance, such as a framed brain stereotactic instrument, a neural navigation system or a surgical robot mechanical arm, and then a suitable hole is drilled on the skull using a professional drilling kit. Subsequently, the dura mater is penetrated by the electrocoagulation needle, the head skull fixing component 3 is installed under the guidance of the positioning device, and its stability is determined. Next, one end of the filter connecting device 6 is connected to the drainage tube body 71, and the other end is connected to the filter 4 with the extension tube 5, and the distal end of the extension tube 5 is connected to the medicine syringe, forming a complete infusion system. In order to ensure the smoothness and sterility of the infusion system, the air in the infusion pipeline system is discharged by using a micro-pump, and then the puncture head 74 is accurately passed through the positioning guide device, the head skull fixing component 3 into the brain to the target point under the assistance of the positioning guide device and the stereotactic instrument or the surgical robot mechanical arm. The skull fixing component 3 is screwed, and the hollow support tube 72 is directly pulled out from the annular cavity between the drainage tube body 71 and the outer tube 73, and finally the base 10 is placed between the skull fixing component 3 and the fixing cover 11, and the skull fixing component 3 and the fixing cover 11 are connected and then fixed by rotating clockwise, and the brain micro-injection system can infuse medicine into the brain.

[0069] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0070] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cerebral microinfusion device, characterized by: The utility model provides a brain infusion puncture assembly, which comprises a filter, an extension pipe, a filter connecting device, a lumen fixing device, a skull fixing component and a brain infusion puncture assembly. The filter connecting device comprises a shrink nut, a shrink support and a drainage tube shrink body, wherein the shrink nut is sleeved outside the shrink support and is used for fixing the outside of the shrink support, the shrink support is sleeved outside the drainage tube shrink body, and the shrink support and the drainage tube shrink body have a through hole in the same center, which is used for accommodating the drainage tube body to pass through. The lumen fixing device comprises a base and a fixing cover, the base is located inside the fixing cover, and the fixing cover is connected with the skull fixing component. The filter connecting device is a detachable structure and is used for connecting the filter. The hollow support pipe is provided with a third opening at one end close to the support pipe fixing cover, and the third opening is used for accommodating the drainage tube body to pass through. The base is internally provided with a first opening, a first groove and a second groove, one side of the base is provided with the first groove, the second groove is located at the other side of the base, and the first opening is used for fixing the drainage tube body. The skull fixing component is provided with a thread at one end away from the base, which is used for connecting the skull fixing component with the skull of a patient.

2. A cerebral microinfusion device according to claim 1, wherein, One side of the fixing cover is provided with a second opening, which is used for preventing the drainage tube body from moving.

3. A cerebral microinfusion device according to claim 2, wherein, ​ 4. A cerebral microinfusion device according to claim 2, wherein, ​ 5. The brain microinfusion device of claim 1, wherein, ​ 6. A cerebral microinfusion device according to claim 2, wherein, ​ 7. A cerebral microinfusion device according to claim 4, wherein, ​ 8. A cerebral microinfusion device according to claim 7, wherein, ​ 9. A cerebral microinfusion device according to claim 4, wherein, ​ 10. The brain microinfusion device of claim 4, wherein, ​

Images