Brain puncture trocar used for puncture of neonatal hydrocephalus through fonfonis ventricle under ultrasonic guidance

Abstract

The invention discloses a brain puncture trocar for puncture of neonatal hydrocephalus through a fonfonis ventricle under ultrasonic guidance, and relates to the technical field of brain puncture trocar, the brain puncture trocar comprises a connecting seat main body, one end of the connecting seat main body is provided with a long round splicing piece, one side of the long round splicing piece is connected with a connecting hard cannula, and the other side of the long round splicing piece is connected with a connecting sleeve. The brain puncture trocar comprises a hard puncture needle and a connecting hard cannula, a liquid guide soft cannula is installed in the connecting hard cannula, and hydrophobic scale stripes are sprayed to the outer side of the liquid guide soft cannula, and it is ensured that the position of the hard puncture needle can be monitored in real time through an ultrasonic device in the puncture process of the brain puncture trocar; meanwhile, the position of the hard puncture needle is subjected to naked eye tracking through light spots formed by the optical fiber of the hard puncture needle under the skin of a patient, so that the depth and position monitoring mode in the puncture process of the brain puncture trocar is effectively expanded, and it is ensured that medical staff can clearly judge the puncture depth and position of the head of the brain puncture trocar in real time; therefore, the operation convenience and the operation precision of the whole brain puncture trocar are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of brain puncture trocars, in particular to a brain puncture trocar used for puncturing the lateral ventricle of the anterior fontanelle for neonatal hydrocephalus under ultrasound guidance. Background Art

[0002] A cerebral puncture trocar is a specialized medical device used for brain puncture operations. It is primarily used to establish a channel between brain tissue and the outside world to achieve clinical purposes such as cerebrospinal fluid drainage, drug injection, intracranial pressure monitoring, or brain tissue biopsy. Its design must take into account the accuracy, minimal invasiveness, and operational safety of the puncture. It is widely used in the neurosurgery diagnosis and treatment of neonates, children, and adults (such as lateral ventricle puncture and drainage for neonatal hydrocephalus). For this purpose, a Chinese patent discloses a pediatric cerebral puncture trocar, application number CN201120576206.0. This patent is easy to use, has good fixation, and the needle tube has flexible suction and drainage directions. It is not easy to damage brain tissue during suction or drainage, thereby alleviating the pain of the child.

[0003] Hydrocephalus is an imbalance between cerebrospinal fluid secretion and absorption, leading to excessive accumulation and expansion of cerebrospinal fluid within the ventricles. Common causes of hydrocephalus in neonates include periventricular and intraventricular hemorrhage in premature infants, aqueductal stenosis, congenital communicating hydrocephalus, posterior cranial fossa cysts, and chromosomal abnormalities. Newborns are in the prime period of brain development. Hydrocephalus not only increases intracranial pressure but also leads to neurological impairment, brain developmental disorders, and delayed intellectual and motor development. Timely intervention and treatment are crucial. Cerebrospinal fluid drainage and shunt surgery via lateral ventricle puncture at the anterior fontanelle are the most important treatments for hydrocephalus.

[0004] Currently, due to the lack of corresponding auxiliary positioning and adjustment structures, the puncture process and needle tip position of the brain puncture trocar cannot be clearly and accurately displayed during use. Puncture through the anterior fontanelle and the lateral ventricle are mostly performed blindly based on clinical experience, which reduces the convenience and accuracy of the use of the brain puncture trocar and greatly increases the risk of bleeding, brain tissue damage and infection. Summary of the Invention

[0005] The present invention provides a brain puncture trocar for puncturing the lateral ventricle through the anterior fontanelle for neonatal hydrocephalus under ultrasound guidance, which can effectively solve the problem proposed in the above-mentioned background technology that the brain puncture trocar lacks a corresponding auxiliary positioning and adjustment structure during use, and is limited by the material of the brain puncture trocar itself, making it impossible to clearly and accurately display the insertion position of the brain puncture trocar when positioning with ultrasonic detection equipment, thereby reducing the convenience and accuracy of using the brain puncture trocar.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a cerebral puncture trocar for puncturing the lateral ventricle of the anterior fontanelle for neonatal hydrocephalus under ultrasound guidance, comprising a connecting seat body, the end of which is provided with a spliced ​​telescopic dynamic separation mechanism, the spliced ​​telescopic dynamic separation mechanism being used to guide the puncture of the cerebral puncture trocar and to perform withdrawal and separation after the insertion is completed; The spliced ​​telescopic dynamic separation mechanism includes an oblong splicing piece; One end of the connecting seat body is provided with an oblong splicing piece, one side of the oblong splicing piece is connected to a connecting hard sleeve, a liquid guide soft sleeve is installed inside the connecting hard sleeve, and the outer side of the liquid guide soft sleeve is sprayed with hydrophobic scale stripes; A hard puncture needle is inserted into the interior of the liquid guiding soft cannula, and the end of the hard puncture needle is engraved with micron ultrasonic reflection patterns by laser; The outer side of the hard puncture needle is provided with an optical fiber clamping groove, and an optical fiber filament is installed inside the optical fiber clamping groove; The tail end of the hard puncture needle is provided with an end clamping arc groove; A splicing limiting inner box is installed on the inner side of the connecting seat body, a splicing guide circular groove is opened at the end of the splicing limiting inner box, and a clamping arc strip is connected inside the splicing guide circular groove.

[0007] Preferably, the outer side of the liquid-conducting soft sleeve is tightly fitted with the inner wall of the connecting hard sleeve, the hydrophobic scale stripes are sprayed with a hydrophobic coating, and the end of the liquid-conducting soft sleeve is provided with a circular chamfer.

[0008] Preferably, the outer side of the rigid puncture needle is tightly slidably fitted with the inner wall of the liquid guiding soft sleeve, the outer side of the optical fiber filament is flush with the outer side of the rigid puncture needle, and the arc surface of the end of the optical fiber filament is flush with the arc surface of the end of the rigid puncture needle; The positions of the clamping arc strip and the end clamping arc groove correspond to each other, and the outer side of the clamping arc strip is tightly fitted with the inner wall of the end clamping arc groove.

[0009] Preferably, the optical fiber light source body is movably connected to the middle of the inner side of the splicing limit inner box, and the middle of one side of the optical fiber light source body is equidistantly interspersed with splicing optical fibers along the circumferential direction; Laser ranging sensors are embedded and installed at the top and bottom of one end of the connecting seat body, and a separate electric telescopic rod is embedded and installed along the circumferential direction at the end of the connecting seat body corresponding to the side position of the laser ranging sensor. The ends of multiple separate electric telescopic rods are fixedly connected to separate translation circular plates, and both ends of one side of the separate translation circular plate are fixedly connected to spliced ​​circular end columns.

[0010] Preferably, the inner wall of the splicing guide circular groove fits tightly with the outer side of the hard puncture needle, the splicing optical fiber filaments and the corresponding optical fiber clamping grooves are clamped with each other, and the ends of the splicing optical fiber filaments are cooperatively connected with the ends of the optical fiber filaments.

[0011] Preferably, the circular end columns and the circular holes at both ends of the long circular splicing piece are mutually engaged, and the side surfaces of the long circular splicing piece are tightly fitted with the side surfaces of the separating translation circular plate.

[0012] Preferably, the friction between the liquid guiding soft sleeve and the hard puncture needle is smaller than the friction between the hard puncture needle and the splicing guide circular groove, and an arc guide groove is provided at the edge of the separation translation circular plate corresponding to the outer side of the laser ranging sensor.

[0013] Preferably, the tail of the connector body is provided with an extension control adjustment mechanism, which is used to adjust the operation process of the brain puncture trocar and to provide a warning mark for the insertion process of the brain puncture trocar; The extension control and adjustment mechanism includes a connecting arc-shaped end block; The tail of the connecting seat body is fixedly connected to a connecting arc end block, the end of the connecting arc end block is connected to a front connecting handle through a threaded tube, the tail of the front connecting handle is connected to the tail connecting handle through a threaded tube, and both ends of the front connecting handle are sleeved with sealing limit rubber rings; The front connecting handle is internally clamped with a power supply battery body, the middle portion of one end of the tail connecting handle is fixedly connected with a control end button, and the outer end portion of the tail connecting handle is fixedly sleeved with a marking indicator light ring; One end of the tail connecting handle is fixedly connected to an installation limit ring, and an adjusting screw is rotatably installed at the end of the installation limit ring corresponding to the internal position of the tail connecting handle. One end of the adjusting screw is fixedly connected to an adjusting knob, and a counterweight elliptical block is threadedly installed on the outside of the adjusting screw corresponding to the internal position of the tail connecting handle.

[0014] Preferably, the side surfaces of the two sealing limit rubber rings are tightly fitted with the corresponding connecting seat body, the front connecting handle and the tail connecting handle respectively, and the outer side of the counterweight elliptical block is tightly slidably fitted with the inner wall of the tail connecting handle.

[0015] Preferably, the power output end of the power supply battery body is interconnected with the power input end of the optical fiber light source body, the laser ranging sensor and the separate electric telescopic rod, and the signal output end of the control end button is interconnected with the signal input end of the separate electric telescopic rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use: 1. A spliced ​​telescopic dynamic separation mechanism is provided. Through the mutual cooperation between the various components within the spliced ​​telescopic dynamic separation mechanism, the puncture and separation process of the brain puncture trocar is optimized. Through the mutual cooperation between the hydrophobic scale stripes, micron ultrasonic reflection stripes, optical fiber filaments and laser ranging sensors, the position of the hard puncture needle can be monitored in real time by the ultrasonic device during the puncture process of the brain puncture trocar. At the same time, the mutual cooperation between the hydrophobic scale stripes and the optical fiber filaments enables medical staff to clearly observe the insertion depth of the hard puncture needle with the naked eye. At the same time, the position of the hard puncture needle is tracked visually through the light spot formed by the optical fiber of the hard puncture needle under the patient's skin, and the insertion depth of the hard puncture needle is detected by monitoring the distance between the connecting seat body and the patient's skin. This effectively expands the depth and position monitoring method of the brain puncture trocar during the puncture process, ensuring that medical staff can clearly judge the insertion depth and position of the brain puncture trocar needle in real time, thereby effectively improving the overall operation convenience and operation accuracy of the brain puncture trocar. At the same time, through the splicing structural design of the oblong splicing piece and the hard puncture needle, and then utilizing the different friction characteristics of the hard puncture needle, the splicing limit inner box and the liquid guide soft cannula, and through the extension and retraction of the separation electric telescopic rod and the movement of the separation translation circular plate, the liquid guide soft cannula and the hard puncture needle are separated, thereby effectively improving the convenience of separating the inside and outside of the brain puncture cannula needle, and through the multi-layer nested structural design between the splicing limit inner box, the optical fiber light source body and the laser ranging sensor, the overall integration level of the brain puncture cannula needle is effectively improved, the function of the brain puncture cannula needle is expanded, and the convenience and safety of using the brain puncture cannula needle are improved.

[0017] 2. An extension control adjustment mechanism is provided. The mutual cooperation between the various components within the extension control adjustment mechanism optimizes the adjustment and control process of the brain puncture trocar. The splicing structure design between the various components at the tail of the connector body allows the brain puncture trocar to be quickly disassembled, assembled and adjusted as needed during use. The mutual cooperation between the power supply battery body, the control end button and the marking prompt light ring and the various components within the connector body effectively improves the convenience of power supply, control and prompt of the brain puncture trocar, ensuring that medical staff can intuitively observe the insertion depth without the help of ultrasound equipment, further improving the smoothness of brain puncture trocar operation and simplifying the adjustment process of the brain puncture trocar. At the same time, by adjusting the coordination between the screw rod, the adjustment knob and the counterweight elliptical block, the center of gravity of the brain puncture trocar during use can be adjusted to ensure that the brain puncture trocar can adapt to the operating habits of different medical staff, thereby effectively improving the overall operation stability and operation accuracy of the brain puncture trocar.

[0018] In summary, through the mutual cooperation between the spliced ​​telescopic dynamic separation mechanism and the extension control adjustment mechanism, the operation process of the brain puncture trocar is optimized, and the function of the brain puncture trocar is effectively expanded. Through the scale on the outside of the liquid guide soft cannula, the light spot of the end of the hard puncture needle under the patient's skin and the gap detection of the laser ranging sensor, and in conjunction with the external ultrasonic device, the position of the brain puncture trocar can be detected in real time. Through the combination of multiple monitoring methods, the influence of blood attached to the outside of the liquid guide soft cannula on the observation is reduced, the overall monitoring effect is improved, the overall puncture accuracy of the brain puncture trocar is effectively improved, tissue damage is reduced, and the use of The arc-shaped structural design of the end of the rigid puncture needle effectively prevents the rigid puncture needle from puncturing the ventricular wall or choroid plexus during the puncture process. At the same time, ultrasonic real-time monitoring is used to avoid larger blood vessel branches in the subcutaneous tissue and brain tissue, thereby avoiding vascular damage and bleeding, making the brain puncture cannula more suitable for premature infants. At the same time, the flexible arc chamfer design of the end of the liquid guide cannula effectively reduces the risk of damage to brain tissue during puncture, and the spliced ​​handle structure design of the connecting seat body makes it easier to grasp the brain puncture cannula during operation, and allows medical staff to directly operate it with one hand, thereby effectively improving the operation convenience and use safety of the brain puncture cannula. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached figure: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic structural diagram of the installation of the spliced ​​telescopic dynamic separation mechanism of the present invention; Figure 3 This is a schematic diagram of the structure of the micron ultrasonic reflection pattern installation of the present invention; Figure 4 This is a schematic diagram of the structure of the installation of the separation translation circular plate of the present invention; Figure 5 This is a schematic structural diagram of the installation of the snap-fit ​​arc strip of the present invention; Figure 6 It is a structural diagram of the extension control adjustment mechanism of the present invention; Figure 7 It is a structural schematic diagram of the end portion of the present invention; Figure 8 This invention Figure 7 Cross-sectional view at point A; Numbers in the figure: 1, connecting seat body; 2. Spliced ​​telescopic dynamic separation mechanism; 201. Long circular splicing piece; 202. Connecting hard sleeve; 203. Liquid guide soft sleeve; 204. Hydrophobic scale stripes; 205. Rigid puncture needle; 206. Micrometer ultrasonic reflection pattern; 207. Fiber optic card slot; 208. Fiber optic filament; 209. End card slot; 210. Spliced ​​limit inner box; 211. Spliced ​​guide circular groove; 212. Card slot; 213. Fiber optic light source body; 214. Spliced ​​optical fiber filament; 215. Laser ranging sensor; 216. Spliced ​​electric telescopic rod; 217. Spliced ​​translation circular plate; 218. Spliced ​​circular end column; 3. Extended control adjustment mechanism; 301. Connecting arc-shaped end block; 302. Front connecting handle; 303. Tail connecting handle; 304. Sealing limit rubber ring; 305. Power supply battery body; 306. Control end button; 307. Marking prompt light ring; 308. Installation limit ring; 309. Adjustment screw; 310. Adjustment knob; 311. Counterweight elliptical block. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Example: Figure 1-8 As shown, the present invention provides a technical solution, a brain puncture trocar for puncturing the lateral ventricle of the anterior fontanelle for neonatal hydrocephalus under ultrasound guidance, comprising a connecting seat body 1, an end of the connecting seat body 1 is provided with a spliced ​​telescopic dynamic separation mechanism 2, the spliced ​​telescopic dynamic separation mechanism 2 is used to guide the brain puncture trocar and perform withdrawal and separation after the insertion is completed; The spliced ​​telescopic dynamic separation mechanism 2 includes an oblong splicing piece 201, a connecting hard sleeve 202, a liquid-guiding soft sleeve 203, hydrophobic scale stripes 204, a hard puncture needle 205, a micron ultrasonic reflection pattern 206, an optical fiber clamping groove 207, an optical fiber filament 208, an end clamping arc groove 209, a splicing limit inner box 210, a splicing guide circular groove 211, a clamping arc strip 212, an optical fiber light source body 213, a spliced ​​optical fiber filament 214, a laser ranging sensor 215, a separation electric telescopic rod 216, a separation translation circular plate 217, and a splicing circular end column 218. An oblong splicing piece 201 is provided at one end of the connecting seat body 1, and a connecting hard sleeve 202 is fixedly connected to the middle part of one side of the oblong splicing piece 201. A liquid-conducting soft sleeve 203 is inserted into one end of the internal part of the connecting hard sleeve 202. The outer end of the liquid-conducting soft sleeve 203 is sprayed with hydrophobic scale stripes 204. The outer side of the liquid-conducting soft sleeve 203 is tightly fitted with the inner wall of the connecting hard sleeve 202. The hydrophobic scale stripes 204 are sprayed with hydrophobic paint, and the end of the liquid-conducting soft sleeve 203 is provided with a circular chamfer. A hard puncture needle 205 is inserted into the liquid guiding soft cannula 203, and the end of the hard puncture needle 205 is laser engraved with a micron ultrasonic reflection pattern 206; The outer side of the rigid puncture needle 205 is provided with optical fiber engaging grooves 207 equidistantly and evenly spaced along the circumference. An optical fiber filament 208 is embedded and installed inside the optical fiber engaging groove 207. The outer side of the rigid puncture needle 205 is tightly slidably fitted with the inner wall of the liquid guide tube 203. The outer side of the optical fiber filament 208 is flush with the outer side of the rigid puncture needle 205, and the arc surface of the end of the optical fiber filament 208 is flush with the arc surface of the end of the rigid puncture needle 205. The end of the hard puncture needle 205 is evenly and evenly provided with end engaging arc grooves 209 in the circumferential direction. A splicing limit inner box 210 is embedded in the middle of the inner side of the connecting seat body 1. A splicing guide circular groove 211 is opened at the end of the splicing limit inner box 210. The friction between the liquid guide soft cannula 203 and the hard puncture needle 205 is smaller than the friction between the hard puncture needle 205 and the splicing guide circular groove 211. One end of the inner portion of the splicing guide circular groove 211 is evenly and evenly fixedly connected with a snap-fit ​​arc strip 212 along the circumferential direction. The snap-fit ​​arc strip 212 and the end snap-fit ​​arc groove 209 are correspondingly snap-fitted with each other, and the outer side of the snap-fit ​​arc strip 212 is tightly fitted with the inner wall of the end snap-fit ​​arc groove 209. The fiber optic light source body 213 is movably connected to the middle part of the inner side of the splicing limit inner box 210. Splicing optical fiber filaments 214 are installed in the middle part of one side of the fiber optic light source body 213 at equal intervals along the circumferential direction. The inner wall of the splicing guide circular groove 211 is tightly fitted with the outer side of the hard puncture needle 205. The splicing optical fiber filaments 214 and the corresponding optical fiber clamping grooves 207 are mutually clamped, and the ends of the splicing optical fiber filaments 214 are cooperatively connected with the ends of the optical fiber filaments 208. A laser ranging sensor 215 is embedded and installed at the top and bottom of one end of the connecting base body 1. A separation electric telescopic rod 216 is embedded and installed along the circumferential direction at the end of the connecting base body 1 corresponding to the side position of the laser ranging sensor 215. The ends of the multiple separation electric telescopic rods 216 are fixedly connected to a separation translation circular plate 217. The edge of the separation translation circular plate 217 is provided with an arc guide groove corresponding to the outer position of the laser ranging sensor 215. Both ends of one side of the separation translation circular plate 217 are fixedly connected with spliced ​​circular end columns 218, and the spliced ​​circular end columns 218 and the circular holes at both ends of the elongated splicing piece 201 are mutually clamped, and the side surface of the elongated splicing piece 201 is tightly fitted with the side surface of the separation translation circular plate 217. Through the mutual cooperation between the various components inside the spliced ​​telescopic dynamic separation mechanism 2, the puncture and separation process of the brain puncture cannula needle is optimized. Through the mutual cooperation between the hydrophobic scale stripes 204, the micron ultrasonic reflection stripes 206, the optical fiber filaments 208 and the laser ranging sensor 215, it is ensured that the brain puncture cannula needle can monitor the position of the hard puncture needle 205 in real time during the puncture process through the ultrasonic device, and at the same time, the hydrophobic scale stripes 204, the micron ultrasonic reflection stripes 206, the optical fiber filaments 208 and the laser ranging sensor 215 can be used to ensure that the brain puncture cannula needle can monitor the position of the hard puncture needle 205 in real time during the puncture process. The cooperation between the water scale stripes 204 and the optical fiber filaments 208 allows medical staff to clearly observe the insertion depth of the hard puncture needle 205 with the naked eye. At the same time, the position of the hard puncture needle 205 is tracked by the naked eye through the light spot formed by the hard puncture needle 205 under the patient's skin, and the insertion depth of the hard puncture needle 205 is detected by monitoring the distance between the connecting seat body 1 and the patient's skin. This effectively expands the depth and position monitoring method during the brain puncture trocar puncture process, ensuring that medical staff can clearly judge the insertion depth and position of the brain puncture trocar needle in real time, thereby effectively improving the overall operation convenience and operation accuracy of the brain puncture trocar. At the same time, through the structural design of the splicing of the oblong splicing piece 201 and the hard puncture needle 205, and then utilizing the different frictional characteristics of the hard puncture needle 205, the splicing limit inner box 210 and the liquid guide soft cannula 203, and through the telescopic movement of the separation electric telescopic rod 216 and the movement of the separation translation circular plate 217, the liquid guide soft cannula 203 and the hard puncture needle 205 are separated, thereby effectively improving the convenience of separating the inside and outside of the brain puncture needle, and through the multi-layer nested structural design between the splicing limit inner box 210, the optical fiber light source body 213 and the laser ranging sensor 215, the overall integration degree of the brain puncture needle is effectively improved, the function of the brain puncture needle is expanded, and the convenience and safety of using the brain puncture needle are improved; The tail of the connector body 1 is provided with an extension control adjustment mechanism 3, which is used to adjust the operation process of the brain puncture trocar and to provide a warning mark for the insertion process of the brain puncture trocar; The extension control adjustment mechanism 3 includes a connecting arc end block 301, a front connecting handle 302, a rear connecting handle 303, a sealing limit rubber ring 304, a power supply battery body 305, a control end button 306, a marking indicator light ring 307, an installation limit ring 308, an adjustment screw 309, an adjustment knob 310 and a counterweight elliptical block 311; The tail of the connecting seat body 1 is fixedly connected to a connecting arc end block 301, the end of the connecting arc end block 301 is connected to a front connecting handle 302 through a threaded tube, the tail of the front connecting handle 302 is connected to a tail connecting handle 303 through a threaded tube, and the edges of both ends of the front connecting handle 302 are sleeved with sealing limit rubber rings 304; A power supply battery body 305 is clamped inside the front connecting handle 302, a control end button 306 is fixedly connected to the middle of one end of the tail connecting handle 303, and a marking prompt light ring 307 is fixedly sleeved on the outer end of the tail connecting handle 303. The power output end of the power supply battery body 305 is interconnected with the power input end of the optical fiber light source body 213, the laser ranging sensor 215 and the detachable electric telescopic rod 216, and the signal output end of the control end button 306 is interconnected with the signal input end of the detachable electric telescopic rod 216; One end of the tail connecting handle 303 is fixedly connected to a mounting limit ring 308, and the end of the mounting limit ring 308 is rotatably mounted at a position corresponding to the internal position of the tail connecting handle 303. An adjusting screw rod 309 is fixedly connected to one end of the adjusting screw rod 309, and a counterweight elliptical block 311 is threadedly mounted at the outer side of the adjusting screw rod 309 corresponding to the internal position of the tail connecting handle 303. The sides of the two sealing limit rubber rings 304 are tightly fitted with the corresponding connecting seat body 1, the front connecting handle 302 and the tail connecting handle 303 respectively, and the outer side of the counterweight elliptical block 311 is tightly slidably fitted with the inner wall of the tail connecting handle 303, and the adjustment mechanism is controlled by extension. The mutual cooperation between the internal components optimizes the adjustment and control process of the brain puncture trocar. Through the splicing structure design between the components at the tail of the connector body 1, the brain puncture trocar can be quickly disassembled, assembled and adjusted as needed during use. The mutual cooperation between the power supply battery body 305, the control end button 306 and the marking prompt light ring 307 and the internal components of the connector body 1 effectively improves the convenience of power supply, control and prompt of the brain puncture trocar, ensuring that medical staff can intuitively observe the insertion depth without the help of ultrasonic equipment, further improving the smoothness of brain puncture trocar operation and simplifying the adjustment process of the brain puncture trocar. At the same time, by adjusting the mutual coordination between the screw rod 309, the adjustment knob 310 and the counterweight elliptical block 311, the center of gravity of the brain puncture trocar during use can be adjusted to ensure that the brain puncture trocar can adapt to the operating habits of different medical staff, thereby effectively improving the overall operation stability and operation accuracy of the brain puncture trocar.

[0023] Working principle and use process of the present invention: In actual application of the present invention, when a brain puncture trocar is needed, the liquid guiding soft cannula 203 and the hard puncture needle 205 need to be installed to the end of the connecting seat body 1 first, and the liquid guiding soft cannula 203 is connected to the inside of the oblong splicing piece 201 through the connecting hard cannula 202, and then the liquid guiding soft cannula 203 is limited by the cooperation between the splicing circular end column 218 and the oblong splicing piece 201 to ensure that the liquid guiding soft cannula 203 and the hard puncture needle 205 maintain stable operation during the puncture process; During the process of inserting the liquid-guiding soft cannula 203 and the rigid puncture needle 205 into the neonatal fontanelle, an external ultrasonic monitoring device is simultaneously activated to detect the position of the rigid puncture needle 205. The micron ultrasonic reflection pattern 206 is used to increase the display clarity of the rigid puncture needle 205 on the ultrasonic monitoring device, and the hydrophobic scale stripes 204 are used to visually observe the insertion depth of the liquid-guiding soft cannula 203, thereby improving the operability of the liquid-guiding soft cannula 203 and the rigid puncture needle 205. The optical fiber filament 208 can be installed on the outside of the rigid puncture needle 205 through the optical fiber card slot 207. The optical fiber light source body 213 can generate an illumination light source. The light source inside the optical fiber light source body 213 is guided into the optical fiber filament 208 through the spliced ​​optical fiber filament 214. The light source generated by the end of the optical fiber filament 208 then produces a light spot visible to the naked eye under the patient's skin. The insertion depth of the rigid puncture needle 205 can be visually judged by the light spot. The rigid puncture needle 205 is limited in the circumferential direction by the splicing guide circular groove 211 and the clamping arc strip 212 to prevent the rigid puncture needle 205 from rotating during the insertion and withdrawal process. Then, the rigid puncture needle 205 is installed to the end of the splicing limit inner box 210 through the cooperation between the splicing guide circular groove 211, so that the rigid puncture needle 205 is clamped and limited by the friction between the rigid puncture needle 205 and the splicing guide circular groove 211 to prevent the rigid puncture needle 205 from falling during the separation process between the liquid guiding soft sleeve 203 and the rigid puncture needle 205, thereby further improving the stability of the rigid puncture needle 205 during use. The laser distance measuring sensor 215 can detect the distance between the end of the connecting seat body 1 and the patient's skin to indirectly judge the insertion depth of the liquid guiding soft cannula 203 and the hard puncture needle 205, further expanding the monitoring method of the insertion depth of the brain puncture cannula needle. After the brain puncture cannula needle is inserted to an appropriate depth, the hard puncture needle 205 needs to be pulled out from the inside of the liquid guiding soft cannula 203. The extension of the separation electric telescopic rod 216 drives the separation translation circular plate 217 away from the end of the connecting seat body 1, and then the separation translation circular plate 217 pushes the oblong splicing piece 201 away from the end of the splicing limit inner box 210, so that the relative movement between the liquid guiding soft cannula 203 and the hard puncture needle 205 allows the liquid guiding soft cannula 203 to be left inside the patient's fontanelle and the hard puncture needle 205 to slowly withdraw from the inside of the liquid guiding soft cannula 203, thereby pulling the hard puncture needle 205 out of the inside of the liquid guiding soft cannula 203; When an auxiliary brain puncture trocar is needed, the front connecting handle 302 and the tail connecting handle 303 are installed on the tail of the connecting seat body 1 by connecting the arc-shaped end block 301, and then the connection is sealed by the sealing limit rubber ring 304 to make the connection between the front connecting handle 302 and the tail connecting handle 303 tighter, so that medical staff can grasp the brain puncture trocar more conveniently; The power supply battery 305 can be used to power various components connected to the connector body 1, and the end button 306 can be used to control various components inside the connector body 1. The laser distance sensor 215 detects the distance between the connector body 1 and the patient's skin, and adjusts the light of the marking light ring 307 so that the color and brightness of the marking light ring 307 can be synchronously changed with the change in the distance between the end face of the connector body 1 and the patient's skin, ensuring that the deeper the brain puncture needle is inserted, the redder and brighter the light of the marking light ring 307 is, so as to indirectly remind medical staff to pay attention to the insertion depth of the brain puncture needle. When it is necessary to adjust the center of gravity position of the tail connecting handle 303, the adjusting screw 309 can be driven to rotate by twisting the adjusting knob 310, and the counterweight elliptical block 311 can be driven to move axially along the inside of the tail connecting handle 303 through the thread during the rotation of the adjusting screw 309, so that the counterweight elliptical block 311 can move axially along the inside of the tail connecting handle 303, thereby realizing the adjustment of the center of gravity of the tail connecting handle 303, thereby improving the center of gravity change during the insertion of the brain puncture cannula needle, preventing the center of gravity of the brain puncture cannula needle from shifting forward and causing it to be inserted too deep, making the brain puncture cannula needle smoother and more convenient to use.

[0024] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A trocar for puncturing the lateral ventricle of the anterior fontanelle for neonatal hydrocephalus under ultrasound guidance, comprising a connecting seat body (1), characterized in that: The end of the connecting seat body (1) is provided with a spliced ​​telescopic dynamic separation mechanism (2), which is used to guide the puncture of the brain trocar and to perform withdrawal and separation after the insertion is completed; The spliced ​​telescopic dynamic separation mechanism (2) comprises an oblong splicing piece (201); One end of the connecting seat body (1) is provided with an oblong splicing piece (201), one side of the oblong splicing piece (201) is connected to a connecting hard sleeve (202), a liquid-conducting soft sleeve (203) is installed inside the connecting hard sleeve (202), and the outer side of the liquid-conducting soft sleeve (203) is sprayed with hydrophobic scale stripes (204); A hard puncture needle (205) is inserted into the interior of the liquid-guiding soft cannula (203), and the end of the hard puncture needle (205) is laser-engraved with a micron ultrasonic reflection pattern (206); An optical fiber clamping groove (207) is provided on the outside of the hard puncture needle (205), and an optical fiber filament (208) is installed inside the optical fiber clamping groove (207); The tail end of the hard puncture needle (205) is provided with an end engaging arc groove (209); A splicing limiting inner box (210) is installed inside the connecting seat body (1), a splicing guide circular groove (211) is opened at the end of the splicing limiting inner box (210), and a snap-fit ​​arc strip (212) is connected inside the splicing guide circular groove (211).

2. The cerebral puncture trocar for neonatal hydrocephalus via the anterior fontanelle and lateral ventricle under ultrasound guidance according to claim 1, characterized in that: The outer side of the liquid-conducting soft sleeve (203) is tightly fitted to the inner wall of the connecting hard sleeve (202), the hydrophobic scale stripes (204) are sprayed with a hydrophobic coating, and the end of the liquid-conducting soft sleeve (203) is provided with a circular chamfer.

3. The cerebral puncture trocar for neonatal hydrocephalus via the anterior fontanelle and lateral ventricle under ultrasound guidance according to claim 1, characterized in that: The outer side of the hard puncture needle (205) is tightly slidably fitted with the inner wall of the liquid guide soft sleeve (203), the outer side of the optical fiber filament (208) is flush with the outer side of the hard puncture needle (205), and the arc surface of the end of the optical fiber filament (208) is flush with the arc surface of the end of the hard puncture needle (205); The positions of the clamping arc strip (212) and the end clamping arc groove (209) correspond to each other, and the outer side of the clamping arc strip (212) and the inner wall of the end clamping arc groove (209) are tightly fitted.

4. The cerebral puncture trocar for neonatal hydrocephalus via the anterior fontanelle and lateral ventricle under ultrasound guidance according to claim 1, characterized in that: The optical fiber light source body (213) is movably connected to the middle of the inner side of the splicing limit inner box (210), and splicing optical fiber filaments (214) are installed in the middle of one side of the optical fiber light source body (213) at equal intervals along the circumferential direction; A laser distance measuring sensor (215) is embedded and installed at the top and bottom of one end of the connecting seat body (1); a separation electric telescopic rod (216) is embedded and installed along the circumferential direction at a position on the side of the laser distance measuring sensor (215) corresponding to the end of the connecting seat body (1); a plurality of separation electric telescopic rods (216) are fixedly connected to the ends of the separation translation circular plates (217); and a spliced ​​circular end column (218) is fixedly connected to both ends of one side of the separation translation circular plates (217).

5. The cerebral puncture trocar for neonatal hydrocephalus via the anterior fontanelle and lateral ventricle under ultrasound guidance according to claim 4, characterized in that: The inner wall of the splicing guide circular groove (211) is tightly fitted with the outer side of the hard puncture needle (205), the splicing optical fiber filament (214) and the corresponding optical fiber clamping groove (207) are mutually clamped, and the end of the splicing optical fiber filament (214) is cooperatively connected with the end of the optical fiber filament (208).

6. The cerebral puncture trocar for neonatal hydrocephalus via the anterior fontanelle and lateral ventricle under ultrasound guidance according to claim 4, characterized in that: The circular splicing end column (218) and the circular holes at both ends of the long circular splicing piece (201) are mutually engaged, and the side surface of the long circular splicing piece (201) is tightly fitted with the side surface of the separating translation circular plate (217).

7. The cerebral puncture trocar for neonatal hydrocephalus via anterior fontanelle puncture under ultrasound guidance according to claim 4, characterized in that: The friction force between the liquid guiding soft sleeve (203) and the hard puncture needle (205) is smaller than the friction force between the hard puncture needle (205) and the splicing guide circular groove (211), and an arc guide groove is provided at the edge of the separating translation circular plate (217) at a position outside the laser distance measuring sensor (215).

8. The cerebral puncture trocar for neonatal hydrocephalus via the anterior fontanelle and lateral ventricle under ultrasound guidance according to claim 4, characterized in that: The rear portion of the connecting seat body (1) is provided with an extension control adjustment mechanism (3), which is used to adjust the operation process of the brain puncture trocar and to provide a warning mark during the insertion process of the brain puncture trocar; The extension control adjustment mechanism (3) comprises a connecting arc-shaped end block (301); The rear end of the connecting seat body (1) is fixedly connected to a connecting arc end block (301), the end of the connecting arc end block (301) is connected to a front connecting handle (302) via a threaded tube, the rear end of the front connecting handle (302) is connected to a rear connecting handle (303) via a threaded tube, and both ends of the front connecting handle (302) are sleeved with sealing limit rubber rings (304); The front connecting handle (302) is internally clamped with a power supply battery body (305), a control end button (306) is fixedly connected to the middle of one end of the tail connecting handle (303), and a marking reminder light ring (307) is fixedly sleeved on the outer end of the tail connecting handle (303); One end of the tail connecting handle (303) is fixedly connected to a mounting limit ring (308), and an adjusting screw rod (309) is rotatably mounted on the end of the mounting limit ring (308) at a position corresponding to the interior of the tail connecting handle (303). One end of the adjusting screw rod (309) is fixedly connected to an adjusting knob (310), and a counterweight elliptical block (311) is threadedly mounted on the outside of the adjusting screw rod (309) at a position corresponding to the interior of the tail connecting handle (303).

9. The cerebral puncture trocar for neonatal hydrocephalus via the anterior fontanelle and lateral ventricle under ultrasound guidance according to claim 8, characterized in that: The sides of the two sealing limit rubber rings (304) are respectively tightly fitted with the corresponding connecting seat body (1), the front connecting handle (302) and the tail connecting handle (303), and the outer side of the counterweight elliptical block (311) is tightly slidably fitted with the inner wall of the tail connecting handle (303).

10. The cerebral puncture trocar for neonatal hydrocephalus via the anterior fontanelle and lateral ventricle under ultrasound guidance according to claim 8, characterized in that: The power output end of the power supply battery body (305) is interconnected with the power input end of the optical fiber light source body (213), the laser distance sensor (215), and the detachable electric telescopic rod (216), and the signal output end of the control end button (306) is interconnected with the signal input end of the detachable electric telescopic rod (216).

Images