A metering device for cerebrospinal fluid

Abstract

The application discloses a metering device for ventricular drainage liquid, and relates to the technical field of medical devices, which comprises a base, a drainage bottle, a metering box and a tapping cover, the top of the metering box is provided with a drainage port, and the inside of the metering box is provided with a metering mechanism; the metering mechanism comprises: a first partition plate, a metering shaft rotatably connected to the middle of the first partition plate; a metering wheel fixedly connected to one end of the metering shaft close to the drainage port, a plurality of impeller blades fixedly connected to the outer wall of the metering wheel at intervals; and an optical encoder fixedly connected to the side of the first partition plate close to the optical encoder. The metering box is installed between the drainage tube, and the metering mechanism in the metering box is arranged, the flow rate is converted into the rotating speed by the metering mechanism, the rotating speed is monitored by the encoder and the optical encoder, the flow rate of the drainage liquid is metered, and the convenience and accuracy of the flow rate of the drainage liquid in the ventricular drainage process are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a metering device for cerebrospinal fluid drainage. BACKGROUND

[0002] The main purpose of cerebrospinal fluid drainage is to improve the circulation of cerebrospinal fluid and brain pressure conditions by draining excess cerebrospinal fluid, thereby solving the problem of intracranial pressure caused by various reasons such as hydrocephalus, intracranial infection, and cerebrospinal fluid circulation disorder; for patients who need cerebrospinal fluid drainage, accurate metering during drainage can effectively prevent the occurrence of low intracranial pressure or high intracranial pressure in patients after surgery, which can cause changes in the patient's condition and even death, and can improve the cure rate of patients after brain surgery.

[0003] In the prior art, an external drainage bag or a drainage bottle is generally used in clinical practice to cooperate with a drainage tube for cerebrospinal fluid drainage. During the cerebrospinal fluid drainage process, medical personnel need to frequently measure the drainage volume and flow rate of cerebrospinal fluid to assist the doctor in accurately assessing the patient's condition, and to reduce unnecessary drainage bag replacement and cerebrospinal fluid routine examination frequency, thereby reducing medical costs.

[0004] However, the measurement of the drainage volume and flow rate during the cerebrospinal fluid drainage process is mainly performed by medical personnel according to the scale bar on the drainage bag or the drainage bottle to measure the drainage volume, and by the drip bottle on the drainage tube to measure the flow rate. The operation of determining whether the flow rate measured by the drip bottle is within the permissible range requires a high level of medical personnel, and manual experience judgment can lead to inaccurate measurement with a large error, which increases the work intensity of medical personnel and reduces the accuracy of measurement. Therefore, the present application proposes a metering device for cerebrospinal fluid drainage. SUMMARY

[0005] The present application aims to provide a metering device for cerebrospinal fluid drainage to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a metering device for cerebrospinal fluid drainage, comprising a base and a drainage bottle placed on the base, further comprising:

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

[0008] a tapping cover arranged at the bottom of the metering box, the tapping cover being in communication with the drainage bottle and the metering box;

[0009] The metering mechanism comprises:

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

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

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

[0013] Preferably, the side of the optical encoder away from the first partition is provided with a monitoring mechanism for monitoring abnormal flow rate.

[0014] Preferably, the monitoring mechanism comprises:

[0015] An elastic telescopic member is fixedly connected to the side of the optical encoder away from the first partition;

[0016] Two optical gates are symmetrically arranged in the axial extension position at both ends of the elastic telescopic member;

[0017] A positioning seat is fixedly connected to the outer wall of the metering tank, and is used for bearing and fixing the two optical gates.

[0018] Preferably, the elastic telescopic member comprises a guide pipe, a fixed seat is fixedly connected to the outer wall of the guide pipe, one end of the fixed seat is fixedly connected to the side wall of the optical encoder, an optical blocking rod is slidably connected to the inside of the guide pipe, a limiting ring is fixedly connected to the outer wall of the optical blocking rod and located in the inside of the guide pipe, a first spring is fixedly connected between the limiting ring and the inner wall of the guide pipe, and both ends of the optical blocking rod extend to the outside of both end faces of the guide pipe.

[0019] Preferably, two mounting grooves are symmetrically formed on the side of the positioning seat close to the optical gate, an adjusting screw is rotatably connected in the mounting groove, a nut seat is slidably connected in the mounting groove, the middle 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 corresponding optical gate.

[0020] Preferably, a knob rod is rotatably connected to the middle of the adjusting screw located at the top of the positioning seat, the top of the knob rod extends to the position above the metering tank, an inner ring tooth groove is formed in the opposite end of each of the two adjusting screws, a connecting through hole is formed in the middle of the guide pipe and communicates with the two inner ring tooth grooves, and an alternate locking mechanism is arranged in the connecting through hole.

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

[0022] Preferably, the second partition plate is fixedly connected with a circular hollow cover, the top of the circular hollow cover is fixedly connected with a liquid inlet pipe, the circular hollow cover is connected with the inside of the metering box through the liquid inlet pipe, a flow guide disc is rotatably connected in the circular hollow cover, a T-shaped flow guide channel is formed in the middle of the flow guide disc, a shunt opening is formed in the top of the second partition plate and is connected with the inside of the circular hollow cover, a liquid outlet pipe is arranged at the bottom of the shunt cover and below the circular hollow cover, and the bottom of the circular hollow cover is connected with the liquid outlet pipe.

[0023] Preferably, a linkage shaft is rotatably connected in the middle of the circular hollow cover and is fixed with the flow guide disc, a transmission gear is fixedly connected to the end of the linkage shaft, a rack plate is meshingly connected to the top of the transmission gear, an electric telescopic piece for driving the rack plate to translate is fixedly connected to the side wall of the shunt cover, an extension channel is formed in the top of the second partition plate, a backflow through hole is formed in the bottom of the second partition plate, a sealing sliding groove is formed in the middle of the backflow through hole, a sealing valve plate is slidably connected in the sealing sliding groove, a convex head through groove is formed in the inside of the second partition plate and is connected with the sealing sliding groove and the extension channel, a connecting rod is slidably connected in the inside of the convex head through groove, a pressing convex head is fixedly connected to the top end of the connecting rod, a third spring is fixedly connected between the pressing convex head and the top of the convex head through groove, the bottom end of the connecting rod is fixedly connected with the top of the sealing valve plate, the top of the pressing convex head is in a round head shape and extends into the extension channel, and one end of the rack plate close to the extension channel is in a conical surface shape.

[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 at the top end 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 with the buzzer alarm through the controller, and the encoder and the weighing sensor are electrically connected with the controller.

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

[0026] (1) By installing a metering box between the drainage tube and the drainage tube, cooperating with the setting of the metering mechanism in the metering box, using the change of the rotation speed of the metering wheel in the metering mechanism with the flow rate of the drainage liquid, the flow rate is converted into the rotation speed, and cooperating with the monitoring effect of the encoder and the photoelectric code disc on the rotation speed, the flow rate of the drainage liquid is measured, thereby improving the convenience and accuracy of the flow rate measurement of the drainage liquid in the ventricular drainage process;

[0027] (2) The application can monitor and alarm the drainage flow rate by installing multiple elastic expansion components composed of a fixed seat, a guide tube, a photoelectric stop lever, a limiting ring and a first spring in a ring array at the side wall position of the photoelectric encoder, cooperating with the photoelectric gate arranged at the side wall position of the photoelectric encoder, driving the metering wheel to rotate by the drainage liquid, driving the photoelectric stop lever to perform elastic expansion movement in the guide tube by the centrifugal force generated by the photoelectric encoder rotating with the metering wheel, and determining whether the drainage flow rate exceeds the limited range according to whether the photoelectric stop lever expands into the photoelectric gate at both ends, so that the monitoring of the drainage flow rate is more convenient and accurate.

[0028] (3) The application can adjust the flow direction of the drainage liquid by arranging a second partition plate in the tapping cover, arranging a circular hollow cover body between the second partition plate and the inner wall of the tapping cover, and cooperating with the flow guide disc with a T-shaped flow guide channel arranged inside the circular hollow cover body, and the transmission gear and the pressing protrusion are driven to move at the same time during the movement of the rack plate, so that the backflow through hole is closed by the sealing valve plate when the drainage liquid flows through the shunt port, the drainage liquid is temporarily stored, the drainage bottle is replaced, the drainage liquid temporarily stored in the circular hollow cover body is automatically opened by the sealing valve plate, the temporarily stored drainage liquid can flow along the backflow through hole to the liquid outlet pipe, the temporarily stored drainage liquid can flow back to the drainage bottle, the drainage bottle is replaced without stopping, and the convenience and efficiency of use are improved. BRIEF DESCRIPTION OF DRAWINGS

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

[0030] Figure 2 It is a schematic diagram of the front view of the metering box.

[0031] Figure 3 It is a schematic diagram of the side view of the metering box.

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

[0033] Figure 5 It is a schematic diagram of the front view of the positioning seat.

[0034] Figure 6 It is a schematic diagram of the front view of the positioning seat.

[0035] Figure 7 It is a schematic diagram of the front view of the tapping cover.

[0036] Figure 8 It is a schematic diagram of the front view of the tapping cover.

[0037] Figure 9 Fig. 2 is a schematic diagram of a sectional structure of the second partition plate of the present application.

[0038] In the figure: 100, base; 101, support frame; 102, metering tank; 103, drainage port; 104, weighing sensor; 105, first partition plate; 200, metering mechanism; 201, metering shaft; 202, metering wheel; 203, photoelectric code disc; 204, encoder; 205, fixed seat; 206, guide pipe; 207, positioning seat; 208, photoelectric gate; 209, impeller blade; 210, photoelectric blocking lever; 211, limiting ring; 212, first spring; 213, mounting groove; 214, adjusting screw; 215, nut seat; 216, inner ring tooth groove; 217, knob lever; 218, connecting through hole; 219, transmission shaft; 220, limiting tooth disc; 221, fixed 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, flow guide disc; 305, T-shaped flow guide channel; 306, second partition plate; 307, shunt port; 308, rack plate; 309, linkage shaft; 310, transmission gear; 311, electric telescopic member; 312, telescopic channel; 313, protruding head through slot; 314, connecting rod; 315, third spring; 316, pressing protruding head; 317, backflow through hole; 318, sealing sliding groove; 319, sealing valve plate; 400, drainage bottle. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without any creative work fall within the protection scope of the present application.

[0040] The present application provides a method for controlling the flow rate of a liquid, comprising the steps of: Figures 1-9The metering device for ventricular drainage fluid shown includes a base 100, a drainage bottle 400 placed on the base 100, a metering box 102 and a tapping cover 300, the metering box 102 is fixedly arranged at the upper position of the base 100, the top of the metering box 102 is provided with a drainage port 103, the tapping cover 300 is arranged at the bottom of the metering box 102, the tapping cover 300 is communicated with the drainage bottle 400 and the metering box 102, one end of the drainage tube is communicated with the drainage port 103, the drainage bottle 400 and the tapping cover 300 are connected through a hose, so that the ventricular drainage fluid can enter the drainage bottle 400 through the metering box 102 and the tapping cover 300 for drainage, wherein a negative pressure port can be arranged on the drainage bottle 400, so as to facilitate the negative pressure treatment of the inside of the drainage bottle 400, the sidewall position between the base 100 and the metering box 102 is fixedly connected with a support frame 101, and the top end of the base 100 is fixedly installed with a weighing sensor 104 for measuring the weight of the drainage bottle 400, the weight of the drainage bottle 400 is measured through the weighing sensor 104, so that the drainage volume can be metered, compared with the metering through the scale bar on the weighing sensor 104, the metering is more accurate and convenient, the outer wall of the metering box 102 is installed with a controller 225, the controller 225 is installed with a buzzer 226, the photoelectric door 208 is electrically connected with the buzzer 226 through the controller 225, the encoder 204 and the weighing sensor 104 are electrically connected with the controller 225, the controller 225 has a single-chip microcomputer inside, and a display screen is arranged thereon, the drainage volume and the drainage flow rate can be metered and displayed through the buzzer 226, and the buzzer 226 can alarm when the drainage flow rate is abnormal, the metering mechanism 200 for metering the flow rate is arranged in the metering box 102, the metering mechanism 200 is used for metering the drainage flow rate, the flow rate can be converted into the rotating speed for metering, and the metering is more convenient and accurate;

[0041] The metering mechanism 200 comprises a first partition plate 105, a metering wheel 202 and a photoelectric encoder 203. The first partition plate 105 is fixedly connected to the inside of the metering box 102. The first partition plate 105 divides the inside of the metering box 102 into two independent sections, so as to facilitate the installation of the metering mechanism 200, and at the same time, to make the drainage liquid smoothly drip without causing the pollution of other structures except the metering wheel 202. The metering shaft 201 is rotatably connected to the middle of the first partition plate 105. The metering wheel 202 is fixedly connected to one end of the metering shaft 201 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 encoder 203 is fixedly connected to the other end of the metering shaft 201 away from the metering wheel 202. The first partition plate 105 is fixedly connected to the side close to the photoelectric encoder 203. The sidewall of the photoelectric encoder 203 extends to the inside of the encoder 204. The side of the photoelectric encoder 203 away from the first partition plate 105 is provided with a monitoring mechanism for monitoring the abnormal drainage flow rate. During the ventricular drainage process, the cerebrospinal fluid drainage liquid enters the inside of the metering box 102 from the drainage tube through the drainage port 103. The drainage port 103 can be provided in a funnel shape with a wide upper part and a narrow lower part, so as to narrow the flowing space and increase the liquid flow rate, facilitating subsequent metering. The drainage liquid continuously flows to the peripheral position of the metering wheel 202 below, so that the liquid continuously impacts the impeller blades 209 on the outer wall of the metering wheel 202, thereby driving the metering wheel 202 to rotate. At the same time, the faster the liquid flow rate, the faster the driving speed of the metering wheel 202. The metering wheel 202 rotates at the same time, driving the photoelectric encoder 203 to rotate through the metering shaft 201. The encoder 204 detects the rotating speed of the photoelectric encoder 203, thereby converting the metering of the liquid flow rate into the metering of the rotating speed of the photoelectric encoder 203, so as to make the measurement of the flow rate more convenient and accurate. The rotating speed information detected by the encoder 204 can be displayed to the drainage flow rate of the drainage liquid after being processed by the processing module in the controller 225.

[0042] The monitoring mechanism comprises an elastic telescopic member, photoelectric gates 208 and a positioning seat 207. The elastic telescopic member is fixedly connected to the side of the photoelectric encoder 203 away from the first partition plate 105. The photoelectric gates 208 are two and symmetrically arranged at the axial extension positions of the two ends of the elastic telescopic member. The positioning seat 207 is fixedly connected to the inner wall of the metering box 102, and is used for bearing and fixing the two photoelectric gates 208. Specifically, the elastic telescopic member comprises a guide pipe 206. The outer wall of the guide pipe 206 is fixedly connected with a fixed seat 205. One end of the fixed seat 205 is fixedly connected with the side wall of the photoelectric encoder 203. The photoelectric blocking rod 210 is slidingly connected in the guide pipe 206. The outer wall of the photoelectric blocking rod 210 and the position of the photoelectric blocking rod 210 in the guide pipe 206 are fixedly connected with a limiting ring 211. The limiting ring 211 and the inner wall of the guide pipe 206 are fixedly connected with a first spring 212. The two ends of the photoelectric blocking rod 210 extend to the outer positions of the two end faces of the guide pipe 206. In the initial state, the length of the one end of the photoelectric blocking rod 210 extending out of the guide pipe 206 is greater than the length of the other end of the photoelectric blocking rod 210 extending out of the guide pipe 206, so as to meet the requirement of extending out in the direction away from the center of the photoelectric encoder 203 due to the centrifugal force in the rotating process. When the photoelectric encoder 203 rotates, the photoelectric blocking rod 210 in the elastic telescopic member is driven to stretch and contract due to the centrifugal force, and the higher the rotating speed of the photoelectric encoder 203, the greater the centrifugal force, and the greater the stretching and contraction amount of the photoelectric blocking rod 210, and vice versa. In the initial state, the one end of the photoelectric blocking rod 210 is in the photoelectric gate 208 close to the center of the photoelectric encoder 203. In the brain ventricle drainage process, the two ends of the photoelectric blocking rod 210 are located between the two photoelectric gates 208 and do not extend into the photoelectric gate 208 to form an obstruction. If the drainage flow rate is less than or greater than the set range in the brain ventricle drainage process, the stretching and contraction 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 an obstruction to the photoelectric gate 208. At this time, the corresponding photoelectric gate 208 generates an electric signal, so as to detect the abnormal drainage flow rate and timely alarm, so that medical staff can timely adjust without frequent metering detection. In the brain ventricle drainage process, the metering and monitoring of the drainage flow rate are more efficient, accurate and safe.

[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 at the top position of the positioning seat 207 is rotatably connected to the knob rod 217, and the top of the knob rod 217 extends to the position above the metering box 102. The two adjusting screws 214 have inner ring tooth grooves 216 on the opposite ends to guide A connecting through hole 218 is opened in the middle of the tube 206 and is connected to the two inner ring tooth grooves 216. An alternating locking mechanism is provided 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 limiting 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 limiting toothed disc 220 located at the top of the transmission shaft 219 is fixedly connected to the fixing ring 221. 0 forms an engagement with the inner ring tooth groove 216 at the bottom of the adjusting screw 214 at the top position of the positioning seat 207. Directly rotating the knob rod 217 can drive the adjusting screw 214 at the top position of the positioning seat 207 to rotate, driving the nut seat 215 to move vertically along the mounting groove 213, and adjusting the position of the photoelectric gate 208 away from the center position of the photoelectric code disk 203, so as to adjust the initial spacing distance between the photoelectric blocking rod 210 and the photoelectric gate 208. Similarly, by simply pressing the knob rod 217 downward to drive the transmission shaft 219 to move in the connecting through hole 218, the limiting toothed disc 208 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 tooth plate 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 achieve the adjustment of the abnormal value of the drainage flow rate, increase the adaptability of use, and meet the drainage flow rate abnormality monitoring and alarm under different needs.

[0044] Among them, the inner cavity of the tap cover 300 is fixedly connected to the second partition 306, one side of the second partition 306 is fixedly connected to the circular hollow cover 303, the top of the circular hollow cover 303 is fixedly connected to the 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 the guide disc 304, the middle part of the guide disc 304 is provided with a T-shaped guide channel 305, the top of the second partition 306 is provided with a guide channel 306 that is connected to the circular center. The diversion port 307 is connected to the inside of the hollow cover 303, and a liquid outlet pipe 302 is provided at the bottom of the diversion 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, 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 meshed with a rack plate 308, the side wall of the tapping cover 300 is fixedly connected to an electric telescopic member 311 for driving the rack plate 308 to move in translation, a telescopic channel 312 is provided on the top of the second partition 306, a reflux hole 317 is provided at the bottom of the second partition 306, a sealing slide 318 is provided in the middle of the reflux hole 317, a sealing valve plate 319 is slidably connected to the sealing slide 318, and a sealing valve plate 319 is provided inside the second partition 306. The groove 318 is connected to the convex groove 313 of the telescopic channel 312, and the convex groove 313 is slidably connected with a connecting rod 314. The top of the connecting rod 314 is fixedly connected to a pressing convex head 316. 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 vertically downward after being guided by the T-shaped guide channel 305, and 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 be connected with the diversion port 307, thereby changing 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 down 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 400 process, the drainage liquid is kept flowing and temporarily stored in the tapping cover 300. After the drainage bottle 400 is replaced, it is only necessary to reset the electric telescopic member 311 to drive the transmission gear 310 to rotate. In this way, the flow direction of the drainage liquid can be adjusted back to flow vertically downward through the liquid inlet pipe 301 through the rotation of the guide disc 304. At the same time, the protrusion 316 is pressed upward, and the third spring 315 is used to move the sealing valve plate 319 upward and reset, opening the reflux flow hole 317. At this time, the drainage liquid temporarily stored on one side of the second partition 306 in the tapping 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 only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will appreciate that the technical solutions described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalent features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

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) is fixedly arranged above the base (100), a drainage port (103) is provided on the top of the metering box (102), and a metering mechanism (200) for measuring flow rate is provided inside the metering box (102); A tapping cover (300), 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); 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 to the outer wall of the metering wheel (202) at intervals; 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); a side wall of the photoelectric code disk (203) extends to the inner side of the encoder (204); a monitoring mechanism is provided on a side of the photoelectric code disk (203) away from the first partition (105); the monitoring mechanism is used to monitor abnormal drainage flow rate, and the monitoring mechanism includes: An elastic telescopic member, the elastic telescopic member is fixedly connected to a side of the photoelectric code disk (203) away from the first partition (105), 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 code disk (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) is fixedly connected to a limiting ring (211) 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), and both ends of the photoelectric blocking rod (210) extend to the outer positions of the two end surfaces of the guide tube (206); 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 the positioning seat (207) 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); 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). One end of the photoelectric blocking rod (210) is located in the photoelectric gate (208) close to the center of the photoelectric code disk (203). During the ventricular drainage process, the two ends of the photoelectric blocking rod (210) should be located between the two photoelectric gates (208) and will not extend into the photoelectric gate (208) to form a blockage. During the ventricular drainage process, if the drainage flow rate is less than or greater than the set range, the expansion and contraction 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), forming a blockage in the photoelectric gate (208).

2. A metering device for ventricular drainage fluid according to claim 1, characterized in that: Two mounting 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 mounting groove (213); a nut seat (215) is slidably connected in the interior of the mounting 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.

3. A metering device for ventricular drainage fluid according to claim 2, 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), and the top of the knob rod (217) extends to a position above the metering box (102). The two adjusting screws (214) are each provided with an inner ring tooth groove (216) at one opposite end. 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).

4. A metering device for ventricular drainage fluid according to claim 3, 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).

5. A metering device for ventricular drainage fluid according to claim 4, characterized in that: The inner cavity of the tapping cover (300) is fixedly connected to a second partition (306), one side of the second partition (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 second partition (306) is provided with a diversion port (307) connected to the inside of the circular hollow cover (303), the bottom of the tapping 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).

6. A metering device for ventricular drainage fluid according to claim 5, characterized in that: The middle 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 meshedly 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 move in translation; the top of the second partition (306) is provided with a telescopic channel (312); the bottom of the second partition (306) is provided with a reflux hole (317); the middle of the reflux hole (317) is provided with a sealing groove (318); a sealing member is slidably connected in the sealing groove (318) The valve plate (319) is provided with a convex groove (313) connected to the sealing slide groove (318) and the telescopic channel (312) inside the second partition (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.

7. A metering device for ventricular drainage fluid according to claim 6, 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).

Images