Metering device for ventricular drainage liquid

Abstract

The invention discloses a metering device for ventricular drainage liquid, and relates to the technical field of medical instruments, the metering device comprises a base, a drainage bottle, a metering box and a branching cover, the top of the metering box is provided with a drainage port, and a metering mechanism is arranged in the metering box; the metering mechanism comprises a first partition plate of which the middle part is rotationally connected with a metering shaft; the metering wheel is fixedly connected to the end, close to the drainage opening, of the metering shaft, and a plurality of impeller blades are fixedly connected to the outer wall of the metering wheel at intervals; the side, close to the photoelectric coded disc, of the first partition plate is fixedly connected with an encoder. The metering box is additionally arranged between the drainage tube, the metering mechanism in the metering box is arranged, the rotating speed of the metering wheel in the metering mechanism changes along with the flow speed of the drainage liquid, the flow speed is converted into the rotating speed, and the encoder and the photoelectric coded disc are matched for monitoring the rotating speed, so that the flow speed of the drainage liquid is metered; therefore, the convenience and the accuracy of metering the flow velocity of the drainage liquid in the ventricular drainage process are improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a metering device for ventricular drainage fluid. Background Art

[0002] The main purpose of ventricular drainage is to drain excess cerebrospinal fluid to improve cerebrospinal fluid circulation and brain pressure, thereby solving the problem of increased intracranial pressure caused by various reasons (such as hydrocephalus, intracranial infection, cerebrospinal fluid circulation disorders, etc.); for patients who need ventricular drainage, precise measurement during drainage can effectively prevent the patient from experiencing low intracranial pressure or high intracranial pressure after surgery, resulting in recurrent brain herniation and causing changes in the condition and even death, and can improve the cure rate of patients after brain surgery.

[0003] In the prior art, extracorporeal drainage bags or drainage bottles are generally used in combination with drainage tubes for ventricular drainage. During the ventricular drainage process, medical staff need to frequently measure the drainage volume and drainage flow rate of cerebrospinal fluid to assist doctors in accurately assessing the condition. At the same time, accurate measurement of ventricular drainage can reduce unnecessary drainage bag replacement and the number of routine cerebrospinal fluid examinations, thereby reducing medical costs.

[0004] However, the measurement of drainage volume and drainage flow rate during ventricular drainage is mainly carried out by medical staff according to the scale bar on the drainage bag or drainage bottle to measure the drainage volume, and the drainage flow rate is measured by the drip pot on the drainage tube. The operation of measuring the drainage flow rate according to whether the drip pot is within the permitted range requires a high level of professionalism of the medical staff. At the same time, manual experience judgment will lead to inaccurate measurement and large errors, which increases the workload of medical staff and reduces the accuracy of measurement. Therefore, a metering device for ventricular drainage fluid is proposed. Summary of the invention

[0005] The object of the present invention is to provide a metering device for ventricular drainage fluid to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a metering device for ventricular drainage fluid, comprising a base and a drainage bottle placed on the base, and also comprising:

[0007] A metering box, the metering box is fixedly arranged above the base, a drainage port is arranged on the top of the metering box, and a metering mechanism for measuring the flow rate is arranged inside the metering box;

[0008] A tapping cover, which is arranged at the bottom of the metering box and is connected to the drainage bottle and the metering box;

[0009] Wherein, the measuring mechanism comprises:

[0010] A first partition, the first partition is fixedly connected to the inside of the metering box, and a metering shaft is rotatably connected to the middle of the first partition;

[0011] A metering wheel, the metering wheel is fixedly connected to one end of the metering shaft close to the drainage port, the metering wheel is located below the drainage port, and a plurality of impeller blades are fixedly connected to the outer wall of the metering wheel at intervals;

[0012] The photoelectric encoder is fixedly connected to one end of the metering shaft away from the metering wheel, the first partition is fixedly connected to an encoder on one side close to the photoelectric encoder, and the side wall of the photoelectric encoder extends to the inside of the encoder.

[0013] Preferably, a monitoring mechanism is provided on a side of the photoelectric encoder away from the first partition, and the monitoring mechanism is used for monitoring abnormal drainage flow velocity.

[0014] Preferably, the monitoring mechanism includes:

[0015] An elastic expansion member, wherein the elastic expansion member is fixedly connected to a side of the photoelectric encoder away from the first partition;

[0016] Photoelectric gates, the photoelectric gates are two and symmetrically arranged at axially extending positions at both ends of the elastic telescopic member;

[0017] A positioning seat, the outer wall of which is fixedly connected to the inner wall of the metering box, and the positioning seat is used for supporting and fixing two photoelectric gates.

[0018] Preferably, the elastic telescopic part includes a guide tube, the outer wall of the guide tube is fixedly connected to a fixing seat, one end of the fixing seat is fixedly connected to the side wall of the photoelectric code disk, a photoelectric blocking rod is slidably connected to the inside of the guide tube, a limiting ring is fixedly connected to the outer wall of the photoelectric blocking rod and is located inside the guide tube, a first spring is fixedly connected between the limiting ring and the inner wall of the guide tube, and both ends of the photoelectric blocking rod extend to the outside of the two end surfaces of the guide tube.

[0019] Preferably, the positioning seat has two installation grooves symmetrically opened on one side close to the photoelectric gate, an adjusting screw is rotatably connected in the installation groove, a nut seat is slidably connected inside the installation groove, the middle part of the nut seat is threadedly connected to the outer wall of the adjusting screw, and the side wall of the nut seat is fixedly connected to the side wall of the photoelectric gate at the corresponding position.

[0020] Preferably, the middle part of the adjusting screw located at the top of the positioning seat is rotatably connected to a knob rod, the top of the knob rod extends to the position above the metering box, the two adjusting screws are provided with inner ring grooves at opposite ends, and the middle part of the guide tube is provided with a connecting through hole connected to the two inner ring grooves, and an alternating locking mechanism is provided in the connecting through hole.

[0021] Preferably, the alternating locking mechanism includes a transmission shaft, both ends of the transmission shaft are fixedly connected to limit gear plates, the bottom end of the knob rod is fixedly connected to the transmission shaft, a fixing ring is fixedly connected to the bottom of the inner cavity of the connecting through hole, a blocking ring is fixedly connected to the top of the transmission shaft, and a second spring is fixedly connected between the blocking ring and the fixing ring.

[0022] Preferably, the inner cavity of the branch cover is fixedly connected to a second partition, a circular hollow cover is fixedly connected to one side of the second partition, a liquid inlet pipe is fixedly connected to the top of the circular hollow cover, the circular hollow cover is connected with the interior of the metering box through the liquid inlet pipe, a guide disc is rotatably connected to the inside of the circular hollow cover, a T-shaped guide channel is provided in the middle of the guide disc, a diversion port connected to the interior of the circular hollow cover is provided at the top of the diversion port, a liquid outlet pipe is provided at the bottom of the branch cover and below the circular hollow cover, and the bottom of the circular hollow cover is connected to the liquid outlet pipe.

[0023] Preferably, the middle part of the circular hollow cover is rotatably connected with a linkage shaft fixed with the guide disc, the end of the linkage shaft is fixedly connected with a transmission gear, the top of the transmission gear is meshed with a rack plate, the side wall of the branch cover is fixedly connected with an electric telescopic part for driving the rack plate to translate, the top of the second partition is provided with a telescopic channel, the bottom of the second partition is provided with a reflux hole, the middle of the reflux hole is provided with a sealing slide groove, and a sealing valve plate is slidably connected in the sealing slide groove, and the second partition is provided with a convex head groove connected with the sealing slide groove and the telescopic channel, the convex head groove is slidably connected with a connecting rod, the top of the connecting rod is fixedly connected with a pressing convex head, the pressing convex head and the top of the convex head groove are fixedly connected, and a third spring is fixedly connected between the pressing convex head and the top of the convex head groove, the bottom end of the connecting rod is fixedly connected to the top of the sealing valve plate, the top of the pressing convex head is round and extends into the telescopic channel, and the end of the rack plate close to the telescopic channel is conical.

[0024] Preferably, a support frame is fixedly connected to the side wall between the base and the metering box, a weighing sensor for measuring the weight of the drainage bottle is fixedly installed on the top of the base, a controller is installed on the outer wall of the metering box, a buzzer alarm is installed on the controller, the photoelectric gate is electrically connected to the buzzer alarm through the controller, and the encoder and the weighing sensor are both electrically connected to the controller.

[0025] Compared with the prior art, the technical effects of the present invention are:

[0026] (1) The present invention achieves the measurement of the drainage fluid flow rate by installing a metering box between the drainage tube and cooperating with the metering mechanism in the metering box, utilizing the metering wheel speed in the metering mechanism to change with the flow rate of the drainage fluid, converting the flow rate into the rotation speed, and cooperating with the encoder and the photoelectric code disk to monitor the rotation speed, thereby improving the convenience and accuracy of the measurement of the drainage fluid flow rate during ventricular drainage;

[0027] (2) The present invention installs a plurality of elastic telescopic parts composed of a fixing seat, a guide tube, a photoelectric baffle, a limit ring and a first spring in a circular array at intervals on the side wall of the photoelectric code disk, and then cooperates with the photoelectric gate set at the side wall of the photoelectric code disk. When the metering wheel is driven to rotate by the drainage fluid, the centrifugal force generated by the photoelectric code disk as the metering wheel rotates can be used to drive the photoelectric baffle to elastically telescopic movement in the guide tube, thereby determining whether the drainage flow rate exceeds the specified range based on whether the two ends of the photoelectric baffle are telescoped into the photoelectric gate, realizing monitoring and alarming of the drainage flow rate, eliminating the need for manual observation of the drainage flow rate state at all times, and making the monitoring of the drainage flow rate more convenient and accurate;

[0028] (3) The present invention sets a second partition in the branch cover, and sets a circular hollow cover body between the second partition and the inner wall of the branch cover, and cooperates with the guide disk with a T-shaped guide channel set inside the circular hollow cover body to adjust the flow direction of the drainage liquid. At the same time, the rack plate moves to drive the transmission gear and the pressing convex head at the same time, so that when the drainage liquid flows through the branch port, the sealing valve plate closes the reflux hole to achieve temporary storage of the drainage liquid, which is convenient for the replacement of the drainage bottle. After the drainage channel in the circular hollow cover is reset, the sealing valve plate automatically opens, so that the temporarily stored drainage liquid can flow along the reflux hole toward the liquid outlet pipe, so that the temporarily stored drainage liquid can flow back into the drainage bottle again, so that the drainage bottle can be replaced without stopping the machine, thereby improving the convenience and efficiency of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the front cross-sectional structure of the metering box of the present invention.

[0031] Figure 3 It is a schematic diagram of the side sectional structure of the metering box of the present invention.

[0032] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the guide tube of the present invention.

[0033] Figure 5 It is a front cross-sectional structural schematic diagram of the positioning seat of the present invention.

[0034] Figure 6 It is a schematic diagram of the partial cross-sectional structure of the positioning seat of the present invention from the front.

[0035] Figure 7 It is a front cross-sectional structural schematic diagram of the tap cover of the present invention.

[0036] Figure 8 It is a schematic diagram of the partial front cross-sectional structure of the tap cover of the present invention.

[0037] Fig. 9 It is a schematic diagram of the three-dimensional cross-sectional structure of the second partition of the present invention.

[0038] In the figure: 100, base; 101, support frame; 102, metering box; 103, drainage port; 104, weighing sensor; 105, first partition; 200, metering mechanism; 201, metering shaft; 202, metering wheel; 203, photoelectric code disk; 204, encoder; 205, fixed seat; 206, guide tube; 207, positioning seat; 208, photoelectric gate; 209, impeller blade; 210, photoelectric blocking rod; 211, limiting ring; 212, first spring; 213, mounting groove; 214, adjusting screw; 215, nut seat; 216, inner ring tooth groove; 217, knob rod; 218, connecting through hole; 219, transmission shaft; 220, limiting tooth Plate; 221, fixing ring; 222, blocking ring; 223, second spring; 225, controller; 226, buzzer alarm; 300, tapping cover; 301, liquid inlet pipe; 302, liquid outlet pipe; 303, circular hollow cover; 304, guide disc; 305, T-shaped guide channel; 306, second partition; 307, diversion port; 308, rack plate; 309, linkage shaft; 310, transmission gear; 311, electric telescopic part; 312, telescopic channel; 313, convex head groove; 314, connecting rod; 315, third spring; 316, pressing convex head; 317, reflux hole; 318, sealing slide groove; 319, sealing valve plate; 400, drainage bottle. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The present invention provides Figure 1-Figure 9The metering device for ventricular drainage fluid shown in the figure comprises a base 100, a drainage bottle 400 placed on the base 100, a metering box 102 and a tapping cover 300, wherein the metering box 102 is fixedly arranged above the base 100, a drainage port 103 is arranged on the top of the metering box 102, and the tapping cover 300 is arranged at the bottom of the metering box 102, and the tapping cover 300 is connected to the drainage bottle 400 and the metering box 102, and one end of the drainage tube is connected to the drainage port 103 The drainage bottle 400 is connected to the branch cover 300 by a hose, so that the ventricular drainage fluid can enter the drainage bottle 400 through the metering box 102 and the branch cover 300 for drainage. The drainage bottle 400 can be equipped with a negative pressure port to facilitate the negative pressure treatment inside the drainage bottle 400. The side wall position between the base 100 and the metering box 102 is fixedly connected with a support frame 101, and a weighing sensor for measuring the weight of the drainage bottle 400 is fixedly installed on the top of the base 100. 104, the weight of the drainage bottle 400 is measured by the weighing sensor 104, so as to measure the drainage volume. Compared with the measurement by the scale bar on the weighing sensor 104, the measurement is more accurate and convenient. A controller 225 is installed on the outer wall of the metering box 102, and a buzzer alarm 226 is installed on the controller 225. The photoelectric gate 208 is electrically connected to the buzzer alarm 226 through the controller 225. The encoder 204 and the weighing sensor 104 are both electrically connected to the controller 225. The controller 225 has a single-chip microcomputer inside, and a display screen is configured thereon. With the buzzer alarm 226, the drainage volume and drainage flow rate can be measured and displayed, and the buzzer alarm 226 can be used to alarm the abnormal drainage flow rate. A metering mechanism 200 for measuring the flow rate is provided inside the metering box 102. The metering mechanism 200 is used to measure the drainage flow rate, and the flow rate can be converted into a rotation speed for measurement, which is more convenient and accurate.

[0041] The metering mechanism 200 includes a first partition 105, a metering wheel 202 and a photoelectric code disk 203. The first partition 105 is fixedly connected to the inside of the metering box 102. The first partition 105 divides the inside of the metering box 102 into two independent sections to facilitate the installation of the metering mechanism 200 and enable the drainage fluid to drip smoothly without causing pollution to other structures except the metering wheel 202. The middle part of the first partition 105 is rotatably connected to a metering shaft 201, and the metering wheel 202 is fixedly connected to the metering shaft 201. 01 is located at one end close to the drainage port 103, the metering wheel 202 is located below the drainage port 103, a plurality of impeller blades 209 are fixedly connected to the outer wall of the metering wheel 202 at intervals, the photoelectric code disk 203 is fixedly connected to the end of the metering shaft 201 away from the metering wheel 202, the side of the first partition 105 close to the photoelectric code disk 203 is fixedly connected to the encoder 204, the side wall of the photoelectric code disk 203 extends to the inner side of the encoder 204, and the side of the photoelectric code disk 203 away from the first partition 105 is provided with a monitoring mechanism. The monitoring mechanism is used to monitor abnormal drainage flow rate; during ventricular drainage, cerebrospinal fluid drainage fluid enters the metering box 102 from the drainage tube through the drainage port 103, wherein the drainage port 103 can be set to be a funnel shape that is wide at the top and narrow at the bottom, so that the flow space becomes narrower, the liquid flow rate is increased, and subsequent metering is convenient. The drainage fluid continuously flows to the outer peripheral position of the metering wheel 202 below, so that the liquid continuously hits the impeller blade 209 on the outer wall of the metering wheel 202, thereby driving the metering wheel 202 to rotate, achieving the rotation of the metering wheel 202 The faster the liquid flow rate is, the faster the metering wheel 202 is driven to rotate. When the metering wheel 202 rotates, the photoelectric code disk 203 is driven to rotate through the metering shaft 201. The encoder 204 detects the rotation speed of the photoelectric code disk 203, thereby converting the measurement of the liquid flow rate into the measurement of the rotation speed of the photoelectric code disk 203, making the flow rate measurement more convenient and accurate; the rotation speed information detected by the encoder 204 can be processed by the processing module in the controller 225 to display the drainage flow rate of the drainage fluid.

[0042] The monitoring mechanism includes an elastic telescopic member, a photoelectric gate 208 and a positioning seat 207. The elastic telescopic member is fixedly connected to the side of the photoelectric code disk 203 away from the first partition 105. The photoelectric gate 208 is two and symmetrically arranged at the axial extension positions at both ends of the elastic telescopic member. The outer wall of the positioning seat 207 is fixedly connected to the inner wall of the metering box 102. The positioning seat 207 is used to support and fix the two photoelectric gates 208. Specifically, the elastic telescopic member includes a guide tube 206, the outer wall of the guide tube 206 is fixedly connected to a fixed seat 205, one end of the fixed seat 205 is fixedly connected to the side wall of the photoelectric code disk 203, and the inner part of the guide tube 206 A photoelectric blocking rod 210 is slidably connected, and a limiting ring 211 is fixedly connected to the outer wall of the photoelectric blocking rod 210 and located inside the guide tube 206. A first spring 212 is fixedly connected between the limiting ring 211 and the inner wall of the guide tube 206. Both ends of the photoelectric blocking rod 210 extend to the outer positions of the two end surfaces of the guide tube 206. In the initial state, the length of the end of the photoelectric blocking rod 210 close to the limiting ring 211 extending out of the guide tube 206 is greater than the length of the other end extending out of the guide tube 206, so as to meet the requirement of extending away from the center of the photoelectric code disk 203 due to the centrifugal force during the rotation process; As 203 rotates, since a plurality of elastic telescopic members are distributed in a ring-shaped array on the side wall of the photoelectric code disk 203, the photoelectric code disk 203 is driven to telescope due to the centrifugal force during its rotation. At the same time, the higher the rotation speed of the photoelectric code disk 203, the greater the centrifugal force, the greater the telescopic amount of the photoelectric barrier 210, and vice versa. In the initial state, one end of the photoelectric barrier 210 is in the photoelectric gate 208 extending into the side close to the center of the photoelectric code disk 203. During the ventricular drainage process, the two ends of the photoelectric barrier 210 should be between the two photoelectric gates 208, and will not The photoelectric blocking rod 210 extends into the photoelectric gate 208 to form a barrier. During the ventricular drainage process, if the drainage flow rate is less than or greater than the set range, the extension amount of the photoelectric blocking rod 210 will be too small or too large, so that one end of the photoelectric blocking rod 210 extends into the corresponding photoelectric gate 208 to form a barrier in the photoelectric gate 208. At this time, the corresponding photoelectric gate 208 generates an electrical signal, thereby achieving the detection of abnormal drainage flow rate, thereby achieving timely warning, so that medical staff can make timely adjustments without frequent measurement and detection, so that the measurement and monitoring of the drainage flow rate during ventricular drainage is more efficient and accurate, and the safety protection is also higher;

[0043] Furthermore, two mounting grooves 213 are symmetrically provided on one side of the positioning seat 207 close to the photoelectric gate 208, and an adjusting screw 214 is rotatably connected in the mounting groove 213. A nut seat 215 is slidably connected inside the mounting groove 213. The middle part of the nut seat 215 is threadedly connected to the outer wall of the adjusting screw 214, and the side wall of the nut seat 215 is fixedly connected to the side wall of the photoelectric gate 208 at the corresponding position. The middle part of the adjusting screw 214 located at the top position of the positioning seat 207 is rotatably connected to a knob rod 217, and the top of the knob rod 217 extends to the upper position of the metering box 102. The two adjusting screws 214 are provided with inner ring tooth grooves 216 at the opposite ends to guide A connecting through hole 218 connected to the two inner ring tooth grooves 216 is opened in the middle of the tube 206, and an alternating locking mechanism is arranged in the connecting through hole 218; in a preferred embodiment, the alternating locking mechanism includes a transmission shaft 219, both ends of the transmission shaft 219 are fixedly connected to the limited position toothed disc 220, the bottom end of the knob rod 217 is fixedly connected to the transmission shaft 219, a fixing ring 221 is fixedly connected to the bottom of the inner cavity of the connecting through hole 218, a blocking ring 222 is fixedly connected to the top of the transmission shaft 219, and a second spring 223 is fixedly connected between the blocking ring 222 and the fixing ring 221; in the initial state, the limited position toothed disc 220 located at the top of the transmission shaft 219 is fixedly connected to the fixed ring 221. 0 is meshed with the inner ring tooth groove 216 at the bottom of the adjusting screw 214 at the top position of the positioning seat 207, and the knob rod 217 is directly rotated to drive the adjusting screw 214 at the top position of the positioning seat 207 to rotate, driving the nut seat 215 to move along the vertical direction of the installation groove 213, and adjusting the position of the photoelectric gate 208 away from the center of the photoelectric encoder 203, so as to adjust the initial spacing distance between the photoelectric blocking rod 210 and the photoelectric gate 208. Similarly, it is only necessary to press the knob rod 217 downward to drive the transmission shaft 219 to move in the connecting through hole 218, so that the limit toothed disc 219 at the bottom position of the transmission shaft 219 can be moved. 20 is inserted into the inner ring groove 216 on the adjusting screw 214 at the bottom position of the positioning seat 207, and the limiting toothed disk 220 at the top position of the transmission shaft 219 is disengaged from the inner ring groove 216 at the upper position, so that the adjusting screw 214 at the bottom position of the positioning seat 207 can be driven to rotate when the knob rod 217 is rotated, so as to adjust the position of the photoelectric gate 208 close to the center position of the photoelectric code disk 203, and adjust the distance between the photoelectric gate 208 and the other end of the photoelectric blocking rod 210, so as to realize the adjustment of the abnormal value of the drainage flow rate, increase the adaptability of use, and meet the abnormal drainage flow rate monitoring and alarm under different needs.

[0044] The inner cavity of the tapping cover 300 is fixedly connected to a second baffle 306, one side of the second baffle 306 is fixedly connected to a circular hollow cover 303, the top of the circular hollow cover 303 is fixedly connected to a liquid inlet pipe 301, the circular hollow cover 303 is connected to the inside of the metering box 102 through the liquid inlet pipe 301, the circular hollow cover 303 is rotatably connected to a guide disc 304, the middle of the guide disc 304 is provided with a T-shaped guide channel 305, and the top of the diversion port 307 is provided with a circular hollow A diversion port 307 is connected to the inside of the cover 303, and a liquid outlet pipe 302 is provided at the bottom of the branch cover 300 and below the circular hollow cover 303. The bottom of the circular hollow cover 303 is connected to the liquid outlet pipe 302. By rotating the guide disc 304 in the circular hollow cover 303, the positions of the three ports of the T-shaped guide channel 305 are changed, so that the drainage liquid flowing into the liquid inlet pipe 301 can flow into the diversion port 307 or vertically downward, thereby achieving the purpose of changing the flow direction of the drainage liquid.

[0045] Furthermore, a linkage shaft 309 fixed to the guide disc 304 is rotatably connected in the middle of the circular hollow cover 303, a transmission gear 310 is fixedly connected at the end of the linkage shaft 309, a rack plate 308 is meshedly connected at the top of the transmission gear 310, an electric telescopic member 311 for driving the rack plate 308 to translate is fixedly connected to the side wall of the tapping cover 300, a telescopic channel 312 is provided at the top of the second partition plate 306, a reflux hole 317 is provided at the bottom of the second partition plate 306, a sealing slide groove 318 is provided in the middle of the reflux hole 317, a sealing valve plate 319 is slidably connected in the sealing slide groove 318, and a sealing valve plate 319 is slidably connected to the sealing slide groove 318, and a sealing valve plate 319 is provided in the interior of the second partition plate 306. The convex groove 313 is connected to the slot 318 and the telescopic channel 312, and a connecting rod 314 is slidably connected inside the convex groove 313. A pressing convex head 316 is fixedly connected to the top of the connecting rod 314, and a third spring 315 is fixedly connected between the pressing convex head 316 and the top of the convex groove 313. The bottom end of the connecting rod 314 is fixedly connected to the top of the sealing valve plate 319. The top of the pressing convex head 316 is round and extends into the telescopic channel 312. The end of the rack plate 308 close to the telescopic channel 312 is conical. In the initial state, the drainage liquid flowing in through the liquid inlet pipe 301 flows out vertically downward after being guided by the T-shaped guide channel 305, and in the drainage bottle 400 After the internal drainage liquid is in place, it is only necessary to drive the rack plate 308 to move through the electric telescopic member 311, so that the rack plate 308 drives the transmission gear 310 to rotate during the movement, so that the transmission gear 310 drives the guide disc 304 to rotate ninety degrees through the linkage shaft 309, and switches the liquid inlet pipe 301 to communicate with the diversion port 307, so as to change the flow direction of the drainage liquid. At the same time, the conical surface at the end of the rack plate 308 drives the pressing convex head 316 to move downward during the movement, so that the pressing convex head 316 drives the sealing valve plate 319 to move downward to the bottom position of the sealing slide groove 318 through the connecting rod 314, and the reflux hole 317 is sealed, so that when the drainage bottle is replaced, During the process of draining, the drainage liquid is kept flowing and temporarily stored in the branch cover 300. After the drainage bottle 400 is replaced, the electric telescopic member 311 only needs to be reset to drive the transmission gear 310 to rotate. In this way, the flow direction of the drainage liquid can be adjusted to flow vertically downward through the liquid inlet pipe 301 by rotating the guide disc 304. At the same time, the convex head 316 is pressed upward, and the sealing valve plate 319 is moved upward and reset by the third spring 315 to open the reflux hole 317. At this time, the drainage liquid temporarily stored at one side of the second partition plate 306 in the branch cover 300 will flow out along the liquid outlet pipe 302 and enter the drainage bottle 400 for storage.

[0046] Finally, it should be noted that the above is only 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, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A metering device for ventricular drainage fluid, comprising a base (100) and a drainage bottle (400) placed on the base (100), characterized in that: Also includes: A metering box (102), the metering box (102) being fixedly arranged above the base (100), the top of the metering box (102) being provided with a flow outlet (103), and a metering mechanism (200) for measuring flow velocity being provided inside the metering box (102); A tapping cover (300), wherein the tapping cover (300) is disposed at the bottom of the metering box (102), and the tapping cover (300) is connected to the drainage bottle (400) and the metering box (102); Wherein, the measuring mechanism (200) comprises: A first partition (105), the first partition (105) is fixedly connected to the inside of the metering box (102), and a metering shaft (201) is rotatably connected to the middle of the first partition (105); A metering wheel (202), the metering wheel (202) being fixedly connected to one end of the metering shaft (201) close to the drainage port (103), the metering wheel (202) being located below the drainage port (103), and a plurality of impeller blades (209) being fixedly connected at intervals to the outer wall of the metering wheel (202); A photoelectric code disk (203) is fixedly connected to an end of the metering shaft (201) away from the metering wheel (202); an encoder (204) is fixedly connected to a side of the first partition (105) close to the photoelectric code disk (203); and a side wall of the photoelectric code disk (203) extends to the inner side of the encoder (204).

2. A metering device for ventricular drainage fluid according to claim 1, characterized in that: A monitoring mechanism is provided on the side of the photoelectric encoder (203) away from the first partition (105), and the monitoring mechanism is used to monitor abnormal drainage flow rate.

3. A metering device for ventricular drainage fluid according to claim 2, characterized in that: The monitoring agencies include: An elastic expansion member, the elastic expansion member being fixedly connected to a side of the photoelectric encoder (203) away from the first partition (105); Photoelectric gates (208), the photoelectric gates (208) being two and symmetrically arranged at axially extending positions at both ends of the elastic telescopic member; A positioning seat (207), the outer wall of which is fixedly connected to the inner wall of the metering box (102), and the positioning seat (207) is used for supporting and fixing two photoelectric gates (208).

4. A metering device for ventricular drainage fluid according to claim 3, characterized in that: The elastic telescopic member comprises a guide tube (206), the outer wall of the guide tube (206) is fixedly connected to a fixing seat (205), one end of the fixing seat (205) is fixedly connected to the side wall of the photoelectric encoder (203), the interior of the guide tube (206) is slidably connected to a photoelectric blocking rod (210), the outer wall of the photoelectric blocking rod (210) and located in a fixed position inside the guide tube (206) is fixedly connected to a limiting ring (211), a first spring (212) is fixedly connected between the limiting ring (211) and the inner wall of the guide tube (206), and both ends of the photoelectric blocking rod (210) extend to the outer positions of the two end surfaces of the guide tube (206).

5. A metering device for ventricular drainage fluid according to claim 4, characterized in that: Two installation grooves (213) are symmetrically provided on one side of the positioning seat (207) close to the photoelectric gate (208); an adjusting screw (214) is rotatably connected in the installation groove (213); a nut seat (215) is slidably connected inside the installation groove (213); a middle portion of the nut seat (215) is threadedly connected to an outer wall of the adjusting screw (214); and a side wall of the nut seat (215) is fixedly connected to a side wall of the photoelectric gate (208) at a corresponding position.

6. A metering device for ventricular drainage fluid according to claim 5, characterized in that: The middle of the adjusting screw (214) located at the top of the positioning seat (207) is rotatably connected to a knob rod (217), the top of the knob rod (217) extends to the position above the metering box (102), the two adjusting screws (214) are provided with inner ring tooth grooves (216) at opposite ends, the middle of the guide tube (206) is provided with a connecting through hole (218) connected to the two inner ring tooth grooves (216), and an alternating locking mechanism is provided in the connecting through hole (218).

7. A metering device for ventricular drainage fluid according to claim 6, characterized in that: The alternating locking mechanism comprises a transmission shaft (219), both ends of the transmission shaft (219) are fixedly connected to a limit toothed disc (220), the bottom end of the knob rod (217) is fixedly connected to the transmission shaft (219), a fixing ring (221) is fixedly connected to the bottom of the inner cavity of the connecting through hole (218), a blocking ring (222) is fixedly connected to the top of the transmission shaft (219), and a second spring (223) is fixedly connected between the blocking ring (222) and the fixing ring (221).

8. A metering device for ventricular drainage fluid according to claim 7, characterized in that: The inner cavity of the branch cover (300) is fixedly connected to a second partition plate (306), one side of the second partition plate (306) is fixedly connected to a circular hollow cover (303), the top of the circular hollow cover (303) is fixedly connected to a liquid inlet pipe (301), the circular hollow cover (303) is connected to the inside of the metering box (102) through the liquid inlet pipe (301), the inside of the circular hollow cover (303) is rotatably connected to a guide disc (304), the middle of the guide disc (304) is provided with a T-shaped guide channel (305), the top of the diversion port (307) is provided with a diversion port (307) connected to the inside of the circular hollow cover (303), the bottom of the branch cover (300) and located below the circular hollow cover (303) is provided with a liquid outlet pipe (302), the bottom of the circular hollow cover (303) is connected to the liquid outlet pipe (302).

9. A metering device for ventricular drainage fluid according to claim 8, characterized in that: The middle part of the circular hollow cover (303) is rotatably connected to a linkage shaft (309) fixed to the guide disc (304); the end of the linkage shaft (309) is fixedly connected to a transmission gear (310); the top of the transmission gear (310) is meshingly connected to a rack plate (308); the side wall of the branch cover (300) is fixedly connected to an electric telescopic member (311) for driving the rack plate (308) to translate; the top of the second partition plate (306) is provided with a telescopic channel (312); the bottom of the second partition plate (306) is provided with a reflux hole (317); the middle part of the reflux hole (317) is provided with a sealing groove (318); a sealing member (318) is slidably connected in the sealing groove (318) The valve plate (319) is provided with a convex groove (313) connected with the sealing groove (318) and the telescopic channel (312) inside the second partition plate (306), and a connecting rod (314) is slidably connected inside the convex groove (313), and a pressing convex head (316) is fixedly connected to the top of the connecting rod (314), and a third spring (315) is fixedly connected between the pressing convex head (316) and the top of the convex groove (313), and the bottom end of the connecting rod (314) is fixedly connected to the top of the sealing valve plate (319), and the top of the pressing convex head (316) is round and extends into the telescopic channel (312), and the end of the rack plate (308) close to the telescopic channel (312) is conical.

10. A metering device for ventricular drainage fluid according to claim 9, characterized in that: A support frame (101) is fixedly connected to the side wall between the base (100) and the metering box (102); a weighing sensor (104) for measuring the weight of the drainage bottle (400) is fixedly installed on the top of the base (100); a controller (225) is installed on the outer wall of the metering box (102); a buzzer alarm (226) is installed on the controller (225); the photoelectric gate (208) is electrically connected to the buzzer alarm (226) through the controller (225); and the encoder (204) and the weighing sensor (104) are both electrically connected to the controller (225).

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