Cerebrospinal fluid extraction device for child hematological tumor patient

Abstract

The invention provides a cerebrospinal fluid extraction device for a child hematological tumor patient, and belongs to the technical field of medical instruments. Comprising a telescopic mechanism, a clamping mechanism is fixedly installed in the middle of the front face of the telescopic mechanism, and an adjusting mechanism is fixedly installed at the top of the telescopic mechanism. By arranging the clamping mechanism, the head of a patient can be stably clamped, a silica gel soft clamping plate is comfortable, the V-shaped design can adapt to different head sizes, the device can be conveniently mounted and dismounted on an operating table through the mounting assembly, the positioning function is good, the height can be flexibly adjusted through the telescopic mechanism, different requirements are met, and the adjusting mechanism and the positioning mechanism are matched, so that the device is convenient to use. The height and rotation of the puncture needle can be adjusted, the puncture needle can better adapt to different puncture positions, the tensioning assembly can wind the drainage tube, the drainage tube made of a specific material is prevented from deformation and extrusion, smoothness is kept, winding is prevented, the overall stability of the drainage tube is improved, and the practicability and convenience of the device are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically to a cerebrospinal fluid extraction device for children with blood tumors. Background Art

[0002] Childhood blood tumors are a type of disease that seriously threatens children's health. During the treatment process, cerebrospinal fluid examination is of great significance for the diagnosis of the disease, the formulation of treatment plans, and prognosis evaluation. Therefore, accurate and safe cerebrospinal fluid extraction is a very critical link.

[0003] Currently, the existing cerebrospinal fluid extraction devices for children with blood tumors are relatively simple. In actual application, these devices can usually only perform simple lateral and longitudinal adjustments. However, under normal circumstances, cerebrospinal fluid extraction requires different puncture locations to be selected according to the specific condition of the disease, and it is not fixed at a certain position on the head.

[0004] The human head is usually round in shape, which means that simple up, down, left, and right displacement adjustments cannot meet the needs of head puncture and cerebrospinal fluid extraction in complex situations. For example, under different conditions, punctures may need to be performed at different angles and positions to ensure that cerebrospinal fluid samples can be accurately obtained while avoiding damage to surrounding important tissues.

[0005] The existing technology has obvious defects and shortcomings during application. On the one hand, the simple adjustment method cannot adapt to the complex shape of the head and the puncture requirements of different diseases, which may lead to inaccurate puncture position and affect the accuracy of the examination results. On the other hand, the limited adjustment ability may increase the difficulty and risk of the operation, prolong the operation time, and bring greater pain and discomfort to the patient. In summary, in order to improve the accuracy and safety of cerebrospinal fluid extraction in children with blood tumors and meet the puncture requirements under different diseases, a more advanced and flexible cerebrospinal fluid extraction device is urgently needed. Summary of the invention

[0006] In view of the problem that the existing cerebrospinal fluid extraction devices in the prior art cannot be flexibly adapted and positioned, the purpose of the present invention is to provide a cerebrospinal fluid extraction device for children with blood tumors.

[0007] To solve the above problems, the present invention adopts the following technical solutions:

[0008] A cerebrospinal fluid extraction device for children with blood tumors, comprising a telescopic mechanism, a clamping mechanism fixedly installed in the middle of the front of the telescopic mechanism, an adjustment mechanism fixedly installed on the top of the telescopic mechanism, a positioning mechanism fixedly installed on the bottom of the adjustment mechanism, and a mounting assembly fixedly installed on one side of the bottom of the telescopic mechanism close to the clamping mechanism;

[0009] The telescopic mechanism comprises a vertical rail, a movable block is slidably connected to the inner side of the vertical rail, the front of the movable block is fixedly connected to the back of the clamping mechanism, an adjustment component is fixedly connected to the upper end of the back of the vertical rail, the top of the adjustment component is connected to the bottom of the adjustment mechanism, a first hand-tightening screw is threadedly connected to the lower end of the front of the movable block, and the end of the first hand-tightening screw passes through the movable block;

[0010] The positioning mechanism includes a base plate, which is fixedly installed on the bottom of the adjustment mechanism, a hinge is fixedly connected to the rear side of the bottom of the base plate, a frame is fixedly connected to the outer end of the bottom of the base plate, an inner lower end of the frame is rotatably connected to a base plate, a puncture needle sleeve is fixedly connected to the bottom of the base plate, a second hand-tightened screw is threadedly connected to the bottom of the puncture needle sleeve, an end of the second hand-tightened screw passes through the puncture needle sleeve, a tensioning assembly is fixedly connected to one end of the base plate away from the telescopic mechanism, a hinge is also fixedly installed on the top rear side of the base plate, and an electric push rod is hinged between the two hinges.

[0011] Optionally, the adjustment assembly includes a side rail, which is fixedly mounted on the upper end of the back side of the vertical rail, and the inner part of the side rail is slidably connected with a movable plate, the top of the movable plate is connected to the bottom of the adjustment mechanism, and the lower end of the back side of the movable plate is threadedly connected with a third hand-tightened screw, and the end of the third hand-tightened screw passes through the movable plate.

[0012] Optionally, limiting holes are arranged linearly at equal intervals on the inner wall of the vertical rail, the limiting holes penetrate the vertical rail, and the ends of the first hand-tightened screw and the third hand-tightened screw are respectively inserted into the inner sides of the limiting holes at corresponding positions.

[0013] Optionally, the clamping mechanism includes a transverse rail, which is fixedly connected to the front side of the movable block, one end of the transverse rail is fixedly connected to a first motor, the output end of the first motor passes through the transverse rail and is fixedly connected to a screw rod, the screw rod is rotatably connected to the inner side of the transverse rail, the threads at both ends of the screw rod have opposite rotation directions, both ends of the screw rod are threadedly connected to displacement blocks, and the side of the displacement block away from the vertical rail is fixedly connected to a clamping frame.

[0014] Optionally, the outer end of the clamping frame is semi-arc-shaped in top view, a clamping plate is fixedly connected to the inner side of the clamping frame, the inner side of the clamping plate is V-shaped in top view, and the clamping plate is configured as a silicone soft splint.

[0015] Optionally, the mounting assembly includes a fixing plate, which is fixedly connected to the lower end of the front side of the vertical rail, the front end of the fixing plate is fixedly connected to a concave clamp seat, the lower end of the concave clamp seat is threadedly connected to a fourth hand-tightened screw, and the top of the fourth hand-tightened screw passes through the concave clamp seat and is fixedly connected to a circular clamp plate.

[0016] Optionally, the adjustment mechanism includes a frame, which is fixedly connected to the top of the movable plate, the top of the frame is fixedly connected to a driving assembly, the front end of the frame is fixedly connected to an annular rail, the inner side of the annular rail is slidably connected to a slip ring, the outer side of the slip ring is transmission-connected to the driving assembly, the inner side of the slip ring is fixedly connected to a connecting plate, and the bottom of the connecting plate is connected to the top of the base plate.

[0017] Optionally, the drive assembly includes a mounting plate and a gear ring, the gear ring is fixedly connected to the outer side of the slip ring, the gear ring is also slidably connected to the inside of the annular rail, the mounting plate is fixedly mounted on the top of the frame, the top of the mounting plate is fixedly connected to a second motor, the output end of the second motor passes through the mounting plate and is fixedly connected to a gear, and the gear and the gear ring are meshingly connected.

[0018] Optionally, the tensioning assembly includes a base frame, which is fixedly connected to one end of the base plate close to the hinge, and both ends of the base frame are fixedly connected to elastic members, and the inner upper and lower ends of the elastic members are rotatably connected to tensioning rollers.

[0019] Optionally, the elastic member includes a mounting frame, the mounting frame is fixedly connected to the two ends of the base frame, the inner side of the mounting frame is rotatably connected to a turntable, the inner side of the turntable is fixedly connected to a torsion spring, the inner end of the torsion spring is fixedly connected to a side plate, the tensioning roller is rotatably connected to the upper and lower ends of the inner side of the side plate, the outer side of the mounting frame is rotatably connected to an adjusting button handle, the inner side of the adjusting button handle is fixedly connected to the outer side of the turntable, the outer end of the adjusting button handle is threadedly connected to a fifth hand-tightened screw, and the end of the fifth hand-tightened screw passes through the adjusting button handle.

[0020] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0021] In the above scheme, a clamping mechanism is provided. When in use, the patient's head can be placed inside the clamping frame, and the first motor is started to drive the screw to rotate. Since the threads at both ends of the screw rotate in opposite directions, the displacement block can slide synchronously, driving the clamping frame to move inward. The clamping plate adopts a soft silicone substrate and is V-shaped, which can stably clamp heads of different sizes and ensure comfort. At the same time, the device can be clamped and installed on the side of the operating table through the concave clamp seat in the mounting assembly. It can be quickly installed by twisting the fourth hand-tightened screw, and it can be removed if it is loose. This design enables the device to have a good positioning function and is easy to install.

[0022] The telescopic mechanism allows the height of the device to be flexibly adjusted during use. The height of the clamping mechanism can be adjusted by adjusting the movable block to slide on the inside of the vertical rail, and a first hand-tightened screw is inserted into the limit hole for auxiliary fixation. If the height of the adjustment mechanism is adjusted, the movable plate can be adjusted to slide on the inside of the side rail, thereby flexibly adjusting the up and down displacement of the positioning mechanism, and then a third hand-tightened screw is inserted into the limit hole to adjust the adaptation height of the clamping mechanism and the positioning mechanism. This allows the device to flexibly adjust its height according to actual needs, thereby improving convenience of use.

[0023] The adjustment mechanism and the positioning mechanism enable the device to be adjusted in an annular shape according to the puncture requirements. The second motor is started to drive the gear to rotate, which engages with the gear ring to drive the slip ring to rotate in the annular rail, and the positioning mechanism is adjusted to rotate. The electric push rod can assist in pushing the puncture needle sleeve to rotate, and the puncture needle is installed in the sleeve with a second hand-tightened screw. The height and rotation of the puncture needle can be adjusted in conjunction with the first motor and the electric push rod. When the tensioning assembly is in use, the drainage tube is passed through the inner side of the two tensioning rollers, and the adjusting knob handle is twisted to rotate the turntable to drive the torsion spring to rotate and rewind the drainage tube. The torsion spring pressure can be adjusted to increase the tensioning force. The drainage tube is made of a specific material to avoid deformation and extrusion to keep it unobstructed. The tensioning rollers rotate against each other to facilitate pulling the drainage tube and avoid entanglement, thereby improving the stability of the drainage tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0027] Figure 3 It is a schematic diagram of the top view of the adjustment mechanism of the present invention in a disassembled state;

[0028] Figure 4 It is a bottom view of the structure of the adjustment mechanism of the present invention in a disassembled state;

[0029] Figure 5 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0030] Figure 6 It is a schematic diagram of the positioning mechanism of the present invention in a disassembled state when viewed from above;

[0031] Figure 7 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0032] Figure 8 For the present invention Figure 6 A schematic diagram of the enlarged structure at B;

[0033] Fig. 9 It is a bottom view structural schematic diagram of the positioning mechanism of the present invention.

[0034] [Reference Signs]

[0035] 1. Telescopic mechanism; 11. Vertical rail; 12. Movable block; 13. Adjustment assembly; 131. Side rail; 132. Movable plate; 133. Third hand-tightening screw; 14. First hand-tightening screw; 15. Limiting hole;

[0036] 2. Clamping mechanism; 21. Horizontal rail; 22. First motor; 23. Screw rod; 24. Displacement block; 25. Clamping frame; 26. Clamping plate;

[0037] 3. Adjustment mechanism; 31. Frame; 32. Driving assembly; 321. Mounting plate; 322. Gear ring; 323. Second motor; 324. Gear; 33. Ring rail; 34. Slip ring; 35. Connecting plate;

[0038] 4. Positioning mechanism; 41. Bottom plate; 42. Articulated member; 43. Frame; 44. Base plate; 45. Piercing needle sleeve; 46. Second hand-tightening screw; 47. Tensioning assembly; 471. Base frame; 472. Elastic member; 4721. Mounting frame; 4722. Turntable; 4723. Torsion spring; 4724. Side plate; 4725. Adjustment knob handle; 4726. Fifth hand-tightening screw; 473. Tensioning roller shaft; 48. Electric push rod;

[0039] 5. Mounting assembly; 51. Fixing plate; 52. Concave clamping seat; 53. Fourth hand-tightening screw.

[0040] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0041] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0042] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it should be within the knowledge of technicians in the relevant field whether or not such features, structures or characteristics are explicitly described in conjunction with other embodiments.

[0043] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0044] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0045] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0046] like Figures 1 to 9 As shown, an embodiment of the present invention provides a cerebrospinal fluid extraction device for children with blood tumors, including a telescopic mechanism 1, a clamping mechanism 2 is fixedly installed in the middle of the front of the telescopic mechanism 1, an adjustment mechanism 3 is fixedly installed on the top of the telescopic mechanism 1, a positioning mechanism 4 is fixedly installed on the bottom of the adjustment mechanism 3, and a mounting component 5 is fixedly installed on one side of the bottom of the telescopic mechanism 1 close to the clamping mechanism 2.

[0047] The telescopic mechanism 1 includes a vertical rail 11, and a movable block 12 is slidably connected to the inner side of the vertical rail 11. The front side of the movable block 12 is fixedly connected to the back side of the clamping mechanism 2. An adjusting component 13 is fixedly connected to the upper end of the back side of the vertical rail 11. The top of the adjusting component 13 is connected to the bottom of the adjustment mechanism 3. A first hand-tightening screw 14 is threadedly connected to the lower end of the front side of the movable block 12, and the end of the first hand-tightening screw 14 passes through the movable block 12.

[0048] The positioning mechanism 4 includes a bottom plate 41, which is fixedly mounted on the bottom of the adjustment mechanism 3. A hinge 42 is fixedly connected to the rear side of the bottom of the bottom plate 41. A frame 43 is fixedly connected to the outer end of the bottom of the bottom plate 41. A base plate 44 is rotatably connected to the inner lower end of the frame 43. A puncture needle sleeve 45 is fixedly connected to the bottom of the base plate 44. A second hand-tightening screw 46 is threadedly connected to the bottom of the puncture needle sleeve 45. The end of the second hand-tightening screw 46 penetrates the puncture needle sleeve 45. A tensioning assembly 47 is fixedly connected to one end of the base plate 44 away from the telescopic mechanism 1. A hinge 42 is also fixedly mounted on the rear side of the top of the base plate 44. The two An electric push rod 48 is hinged between the hinges 42. The vertical rail 11 of the telescopic mechanism 1 cooperates with the movable block 12 to flexibly adjust the height of the clamping mechanism 2. The first hand-tightened screw 14 assists in fixing. The adjustment mechanism 3 and the positioning mechanism 4 can realize multi-directional adjustment of the puncture needle position. The hinge 42 on the base plate 41 cooperates with the electric push rod 48 to flexibly change the puncture needle angle. The puncture needle sleeve 45 facilitates the installation of the puncture needle through the second hand-tightened screw 46. The tensioning assembly 47 can stabilize the drainage tube to avoid entanglement and can cooperate with the drainage tube of specific material to keep it unobstructed. The installation assembly 5 facilitates the installation and removal of the device on the operating table, which overall improves the convenience and accuracy of the device in cerebrospinal fluid extraction operations.

[0049] like Figure 1 to Figure 2As shown, the adjustment component 13 includes a side rail 131, and the side rail 131 is fixedly installed on the upper end of the back side of the vertical rail 11. A movable plate 132 is slidably connected inside the side rail 131. The top of the movable plate 132 is connected to the bottom of the adjustment mechanism 3. A third hand-tightened screw 133 is threadedly connected to the lower end of the back side of the movable plate 132. The end of the third hand-tightened screw 133 passes through the movable plate 132. Limiting holes 15 are arranged linearly at equal intervals on the inner wall of the vertical rail 11. The limiting holes 15 pass through the vertical rail 11. The ends of the first hand-tightened screw 14 and the third hand-tightened screw 133 are respectively inserted into the inner sides of the limiting holes 15 at the corresponding positions. The side rails 131 and the movable plate 132 in the adjustment component 13 cooperate to flexibly adjust the height of the adjustment mechanism 3. The third hand-tightened screw 133 assists in fixing. The limiting holes 15 on the inner wall of the vertical rail 11 cooperate with the first hand-tightened screw 14 and the third hand-tightened screw 133 to accurately fix the positions of the movable block 12 and the movable plate 132, ensuring the stable positions of the components during use and facilitating the adjustment of the heights of the clamping mechanism 2 and the positioning mechanism 4.

[0050] like Figures 1 to 3 and Figure 5 As shown, the clamping mechanism 2 includes a transverse rail 21, and the transverse rail 21 is fixedly connected to the front of the movable block 12. One end of the transverse rail 21 is fixedly connected to a first motor 22. The output end of the first motor 22 passes through the transverse rail 21 and is fixedly connected to a screw rod 23. The screw rod 23 is rotatably connected to the inner side of the transverse rail 21. The threads of the two ends of the screw rod 23 are rotated in opposite directions. Both ends of the screw rod 23 are threadedly connected to displacement blocks 24. The side of the displacement block 24 away from the vertical rail 11 is fixedly connected to a clamping frame 25. The outer end of the clamping frame 25 is semi-arc-shaped when viewed from above, and a clamping plate 26 is fixedly connected to the inner side of the clamping frame 25. The inner side of the clamping plate 26 is V-shaped when viewed from above. The clamping plate 26 is configured as a silicone soft splint. In the clamping mechanism 2, the cross rail 21 is fixed on the front of the movable block 12, and the first motor 22 drives the screw rod 23 to rotate on the inner side of the cross rail 21. The threads at both ends of the screw rod 23 rotate in opposite directions, so that the displacement block 24 can move synchronously in the opposite direction. The outer end of the clamping frame 25 connected to the displacement block 24 is semi-arc-shaped, and the inner clamping plate 26 is a silicone soft splint and is V-shaped when viewed from the inside. With this design, on the one hand, the cooperation of the motor and the screw rod 23 can accurately control the movement of the clamping frame 25 to achieve stable clamping of the patient's head. On the other hand, the silicone soft splint can avoid discomfort to the patient while ensuring the clamping effect. The V-shaped design can also assist in extrusion guidance to adapt to patients' heads of different sizes.

[0051] like Figure 1 to Figure 2As shown, the mounting assembly 5 includes a fixing plate 51, which is fixedly connected to the lower front end of the vertical rail 11, and a concave clamping seat 52 is fixedly connected to the front end of the fixing plate 51. The lower end of the concave clamping seat 52 is threadedly connected to a fourth hand-tightening screw 53, and the top of the fourth hand-tightening screw 53 passes through the concave clamping seat 52 and is fixedly connected to a circular clamping plate. In the mounting assembly 5, the fixing plate 51 is connected to the lower front end of the vertical rail 11, and the concave clamping seat 52 at the front end can be used to clamp and install the device. By twisting By moving the fourth hand-tightened screw 53, the circular splint on the top can be moved up and down. When the device needs to be installed, the screw is twisted to make the circular splint rise, and cooperate with the concave clamp seat 52 to clamp the side of the operating table, so as to achieve quick installation. If the device needs to be removed, the screw is loosened, and the circular splint is lowered and separated from the installation position. This design makes the installation and removal process simple and quick, and through the cooperation of the concave clamp seat 52 and the circular splint, the device can be stably fixed on the side of the operating table to ensure that the device will not move easily during use.

[0052] like Figures 1 to 7As shown, the adjustment mechanism 3 includes a frame 31, the frame 31 is fixedly connected to the top of the movable plate 132, the top of the frame 31 is fixedly connected to a driving assembly 32, the front end of the frame 31 is fixedly connected to an annular rail 33, the inner side of the annular rail 33 is slidably connected to a slip ring 34, the outer side of the slip ring 34 is transmission-connected to the driving assembly 32, the inner side of the slip ring 34 is fixedly connected to a connecting plate 35, the bottom of the connecting plate 35 is connected to the top of the bottom plate 41, and the driving assembly The mounting plate 32 includes a mounting plate 321 and a gear ring 322. The gear ring 322 is fixedly connected to the outer side of the slip ring 34. The gear ring 322 is also slidably connected to the inside of the annular rail 33. The mounting plate 321 is fixedly mounted on the top of the frame 31. The top of the mounting plate 321 is fixedly connected to a second motor 323. The output end of the second motor 323 passes through the mounting plate 321 and is fixedly connected to a gear 324. The gear 324 and the gear ring 322 are meshed and connected. The tensioning assembly 47 includes a base frame 4 71, the base frame 471 is fixedly connected to one end of the base plate 44 near the hinge 42, both ends of the base frame 471 are fixedly connected to elastic members 472, the inner upper and lower ends of the elastic member 472 are rotatably connected to the tension roller 473, the elastic member 472 includes a mounting frame 4721, the mounting frame 4721 is fixedly connected to the inner ends of the base frame 471, the inner side of the mounting frame 4721 is rotatably connected to a rotating disk 4722, and the inner side of the rotating disk 4722 is fixedly connected to a torsion spring 47 23. The inner end of the torsion spring 4723 is fixedly connected to the side plate 4724, the tensioning roller 473 is rotatably connected to the upper and lower ends of the inner side of the side plate 4724, the outer side of the mounting frame 4721 is rotatably connected to the adjusting button handle 4725, the inner side of the adjusting button handle 4725 is fixedly connected to the outer side of the turntable 4722, the outer end of the adjusting button handle 4725 is threadedly connected to the fifth hand-tightened screw 4726, and the end of the fifth hand-tightened screw 4726 passes through the adjusting button handle 4725.

[0053] In the adjustment mechanism 3, the frame 31 is connected to the telescopic mechanism 1 through the movable plate 132, and the second motor 323 of the driving assembly 32 drives the gear 324, and the gear 324 is engaged with the gear ring 322 on the outer side of the slip ring 34, so that the slip ring 34 slides in the annular rail 33, thereby driving the connecting plate 35 and the bottom plate 41 to move, so as to realize the flexible adjustment of the positioning mechanism 4, and the base frame 471 of the tensioning assembly 47 is fixed to one end of the base plate 44, and the turntable 47 in the mounting frame 4721 is fixed to the bottom of the base plate 44. 22 is connected to the side plate 4724 through the torsion spring 4723. The upper and lower ends of the inner side of the side plate 4724 are rotatably connected to the tensioning roller 473. The adjusting knob handle 4725 can drive the turntable 4722 to rotate, and adjust the tensioning strength of the torsion spring 4723. The fifth hand-tightened screw rod 4726 can fix the adjusting knob handle 4725. In this way, the adjustment mechanism 3 can achieve precise position adjustment, and the tensioning assembly 47 can ensure the stability of the drainage tube and avoid entanglement, which is convenient for the operation of the device during the cerebrospinal fluid extraction process.

[0054] The workflow of the technical solution provided by the present invention is as follows:

[0055] By setting the clamping mechanism 2, the patient's head can be placed inside the clamping frame 25 during actual use of the device. At this time, the first motor 22 is started to run, and the first motor 22 drives the screw rod 23 to rotate inside the cross rail 21. Since the threads at both ends of the screw rod 23 rotate in opposite directions, as the first motor 22 drives the screw rod 23 to rotate, it can synchronously drive the displacement block 24 to synchronously displace and slide at both ends inside the cross rail 21, thereby prompting the sliding block to drive the clamping frame 25 to move inward. When the clamping frame 25 moves inward, it will drive the clamping plate 26 to clamp the patient's head. The clamping plate 26 is made of a soft silicone base material, which can not only It can ensure comfort while stably clamping, and its V-shaped design has an inner inclined surface that can assist in squeezing and guiding, so that the heads of patients of different sizes can be stably clamped. In addition, by setting the mounting assembly 5, the concave clamp seat 52 on the fixing plate 51 can be used to clamp and install the device to the side of the operating table during use. The installation of the device can be quickly completed by twisting the fourth hand-tightened screw 53. If removal is required, the fourth hand-tightened screw 53 can be loosened to separate the circular clamp from the installation position to remove the device. This design enables the device as a whole to have a better positioning function, and the installation is also very convenient.

[0056] After the telescopic mechanism 1 is set, the height of the clamping mechanism 2 can be flexibly adjusted by adjusting the movable block 12 to slide on the inner side of the vertical rail 11 during use. After the height adjustment is completed, the first hand-tightened screw 14 is twisted and inserted into the inner side of the limiting hole 15 to assist in fixing the movable block 12. During use, if it is necessary to adjust the height of the adjustment mechanism 3, the movable plate 132 can be adjusted to slide on the inner side of the side rail 131. By adjusting the movable plate 132 to slide, the upward and downward displacement of the positioning mechanism 4 can be flexibly adjusted. At this time, the third hand-tightened screw 133 is twisted and inserted into the inner side of the limiting hole 15, and then the adaptive use height of the clamping mechanism 2 and the positioning mechanism 4 can be flexibly adjusted, so that the height of the entire device can be flexibly adjusted according to actual needs during use, which greatly improves the convenience of the entire device during use.

[0057] By setting the adjustment mechanism 3 and the positioning mechanism 4, the device can be operated by starting the second motor 323 during use, and the second motor 323 drives the gear 324 to rotate, and the gear 324 is meshed with the gear ring 322. As the second motor 323 drives the gear ring 322 to rotate, the gear ring 322 is driven to drive the slip ring 34 located inside the annular rail 33 to rotate. By adjusting the rotation of the slip ring 34, the positioning mechanism 4 at the bottom of the driving slip ring 34 can be flexibly adjusted to rotate, so that the device can be annularly adjusted on the basis of up and down adjustment according to the puncture requirements. In addition, during use, the electric push rod 48 can be started to operate, and the operation of the electric push rod 48 can assist in flexibly pushing the puncture needle sleeve 45 to rotate inside the frame 43. During use, the puncture needle can be installed inside the puncture needle sleeve 45 through the second hand-tightening screw 46. At this time, through the operation of the first motor 22 and the electric push rod 48, the puncture needle can not only adjust the height, but also perform further rotation adjustment, so that the whole can better adapt to the puncture extraction work at different positions.

[0058] By setting the tensioning assembly 47, during the use of the device, after the puncture needle is installed in the puncture needle sleeve 45, the drainage tube for extracting cerebrospinal fluid is inserted between the inner sides of the two tensioning rollers. At this time, by twisting the adjusting knob handle 4725, the turntable 4722 located inside the mounting frame 4721 is driven to rotate. The rotation of the turntable 4722 can drive the torsion spring 4723 and its inner side plate 4724 and the tensioning roller shaft 473 to rotate. The two tensioning roller shafts 473 rotate with each other to reel the drainage tube onto the outer surface of the tensioning roller shaft 473. In the process of reeling the tensioning roller shaft 473, the tensioning force of the reeling can act on the torsion spring 4723, causing the torsion spring 4723 to be in a taut state. During the reeling process, the rotation of the adjusting handle can be adjusted according to needs, so that the drainage tube can be further reeled, causing the pressure on the torsion spring 4723 to increase, and the tensioning force of the torsion spring 4723 can be correspondingly increased. During use, the torsion spring 4723 can be reset. The side plate 4724 and the tensioning roller 473 are driven to rotate synchronously, so that the pressure of the torsion spring 4723 acts on the entire drainage tube, so that the drainage tube can be in a taut state. After the adjustment knob handle 4725 is adjusted, the adjustment knob handle 4725 can be fixed by twisting the fifth hand-tightened screw 4726. By adjusting the torsion spring 4723, the pressure of the torsion spring 4723 can be adjusted. During use, the drainage tube can specifically be a nickel-titanium alloy braided drainage tube, a steel wire spiral supported drainage tube, and a memory alloy mesh supported drainage tube. These drainage tubes can be rolled up while avoiding deformation and extrusion of the drainage tube, so that the flow inside the pipeline can be maintained during the rolling process. Moreover, the tensioning rollers 473 are rotatably connected to each other. At this time, during the adjustment process, the drainage tube can cooperate with the tensioning roller 473 to adaptively rotate, which is convenient for pulling the drainage tube, so that the device can maintain the stability of the drainage tube during use and avoid the entanglement of the drainage tube.

[0059] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A cerebrospinal fluid extraction device for children with blood tumors, comprising a telescopic mechanism, characterized in that: A clamping mechanism is fixedly installed in the middle of the front of the telescopic mechanism, an adjusting mechanism is fixedly installed on the top of the telescopic mechanism, a positioning mechanism is fixedly installed on the bottom of the adjusting mechanism, and a mounting assembly is fixedly installed on one side of the bottom of the telescopic mechanism close to the clamping mechanism; The telescopic mechanism comprises a vertical rail, a movable block is slidably connected to the inner side of the vertical rail, the front of the movable block is fixedly connected to the back of the clamping mechanism, an adjustment component is fixedly connected to the upper end of the back of the vertical rail, the top of the adjustment component is connected to the bottom of the adjustment mechanism, a first hand-tightening screw is threadedly connected to the lower end of the front of the movable block, and the end of the first hand-tightening screw passes through the movable block; The positioning mechanism includes a base plate, which is fixedly installed on the bottom of the adjustment mechanism, a hinge is fixedly connected to the rear side of the bottom of the base plate, a frame is fixedly connected to the outer end of the bottom of the base plate, an inner lower end of the frame is rotatably connected to a base plate, a puncture needle sleeve is fixedly connected to the bottom of the base plate, a second hand-tightened screw is threadedly connected to the bottom of the puncture needle sleeve, an end of the second hand-tightened screw passes through the puncture needle sleeve, a tensioning assembly is fixedly connected to one end of the base plate away from the telescopic mechanism, a hinge is also fixedly installed on the top rear side of the base plate, and an electric push rod is hinged between the two hinges.

2. The cerebrospinal fluid extraction device for children with blood tumors according to claim 1, characterized in that: The adjustment assembly includes a side rail, which is fixedly installed on the upper end of the back side of the vertical rail. A movable plate is slidably connected inside the side rail. The top of the movable plate is connected to the bottom of the adjustment mechanism. A third hand-tightened screw is threadedly connected to the lower end of the back side of the movable plate, and the end of the third hand-tightened screw passes through the movable plate.

3. The cerebrospinal fluid extraction device for children with blood tumors according to claim 2, characterized in that: Limiting holes are arranged linearly at equal intervals on the inner wall of the vertical rail, and the limiting holes penetrate the vertical rail. The ends of the first hand-tightened screw rod and the third hand-tightened screw rod are respectively inserted into the inner sides of the limiting holes at corresponding positions.

4. The cerebrospinal fluid extraction device for children with blood tumors according to claim 1, characterized in that: The clamping mechanism includes a transverse rail, which is fixedly connected to the front side of the movable block. One end of the transverse rail is fixedly connected to a first motor. The output end of the first motor passes through the transverse rail and is fixedly connected to a screw rod. The screw rod is rotatably connected to the inner side of the transverse rail. The threads at both ends of the screw rod have opposite rotation directions. Both ends of the screw rod are threadedly connected to displacement blocks. The side of the displacement block away from the vertical rail is fixedly connected to a clamping frame.

5. The cerebrospinal fluid extraction device for children with blood tumors according to claim 4, characterized in that: The outer end of the clamping frame is semi-arc-shaped when viewed from above, and a clamping plate is fixedly connected to the inner side of the clamping frame. The inner side of the clamping plate is V-shaped when viewed from above, and the clamping plate is a silicone soft splint.

6. The cerebrospinal fluid extraction device for children with blood tumors according to claim 1, characterized in that: The mounting assembly includes a fixing plate, which is fixedly connected to the lower front end of the vertical rail, the front end of the fixing plate is fixedly connected to a concave clamp seat, the lower end of the concave clamp seat is threadedly connected to a fourth hand-tightened screw, and the top of the fourth hand-tightened screw passes through the concave clamp seat and is fixedly connected to a circular clamp plate.

7. The cerebrospinal fluid extraction device for children with blood tumors according to claim 1, characterized in that: The adjustment mechanism includes a frame, which is fixedly connected to the top of the movable plate, the top of the frame is fixedly connected to a driving assembly, the front end of the frame is fixedly connected to an annular rail, the inner side of the annular rail is slidably connected to a slip ring, the outer side of the slip ring is transmission-connected to the driving assembly, the inner side of the slip ring is fixedly connected to a connecting plate, and the bottom of the connecting plate is connected to the top of the base plate.

8. The cerebrospinal fluid extraction device for children with blood tumors according to claim 7, characterized in that: The driving assembly includes a mounting plate and a gear ring, wherein the gear ring is fixedly connected to the outer side of the slip ring, and the gear ring is also slidably connected to the inside of the annular rail. The mounting plate is fixedly mounted on the top of the frame, and a second motor is fixedly connected to the top of the mounting plate. The output end of the second motor passes through the mounting plate and is fixedly connected to a gear, and the gear and the gear ring are meshingly connected.

9. The cerebrospinal fluid extraction device for children with blood tumors according to claim 1, characterized in that: The tensioning assembly comprises a base frame, which is fixedly connected to one end of the base plate close to the hinge, and both ends of the base frame are fixedly connected to elastic members, and the inner upper and lower ends of the elastic members are rotatably connected to tensioning rollers.

10. The cerebrospinal fluid extraction device for children with blood tumors according to claim 9, characterized in that: The elastic member includes a mounting frame, which is fixedly connected to the two ends of the base frame, the inner side of the mounting frame is rotatably connected to a turntable, the inner side of the turntable is fixedly connected to a torsion spring, the inner end of the torsion spring is fixedly connected to a side plate, the tensioning roller is rotatably connected to the upper and lower ends of the inner side of the side plate, the outer side of the mounting frame is rotatably connected to an adjusting button handle, the inner side of the adjusting button handle is fixedly connected to the outer side of the turntable, the outer end of the adjusting button handle is threadedly connected to a fifth hand-tightening screw, and the end of the fifth hand-tightening screw passes through the adjusting button handle.

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