Infusion flow regulator

Abstract

The present application relates to infusion equipment technical field, specifically disclose a kind of infusion flow regulator, including drainage tube and the regulator main body being arranged on drainage tube, the inner cavity of regulator main body is provided with adjusting assembly, the lower surface of regulator main body is provided with buffer assembly, drainage tube is through regulator main body.The present application can stably adjust the flow rate of drainage tube by using adjusting assembly, can automatically interrupt when drug solution is fast delivered, provide preparation time for medical staff to carry out subsequent processing, simultaneously send alarm to remind patient and medical staff to replace drug solution or pull out indwelling needle, by using buffer assembly can limit drainage tube, the excess drainage tube is flexibly fixed, when infuser inadvertently moves arm and other limb parts, it has buffering effect, make the drainage tube of flexible fixed part produce buffering and float, prevent drainage tube from falling off from infusion stand or fixed clamp, avoid indwelling needle from falling off from patient's arm.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of infusion equipment, and particularly discloses an infusion flow regulator. BACKGROUND

[0002] The infusion flow regulator is a key device for precisely controlling the infusion speed of liquid in a medical infusion system, which is usually installed on an infusion pipeline and adjusts the flow area of the pipeline by a mechanical mode to change the amount of liquid flowing into the patient's body per unit time. The core function of the infusion flow regulator is to ensure the safety and effectiveness of treatment, that is, to avoid risks such as excessive cardiac load and drug toxicity caused by too fast flow rate, and to prevent insufficient drug effect or prolonged treatment time caused by too slow flow rate. In clinical infusion treatment, it is crucial to accurately control the infusion flow rate.

[0003] However, the existing technology still has the following problems:

[0004] 1. The traditional infusion flow regulator mostly adopts a roller extrusion mode to adjust the flow rate by changing the size of the drainage tube lumen, but the roller is prone to be adjusted excessively under external force, resulting in the need to repeatedly move the roller and waste time. Moreover, the roller extrusion mode cannot provide a prompt after the drug liquid is delivered, making it difficult for the patient to discover that the drug liquid delivery is completed in time during rest, leading to depletion of the liquid in the drainage tube, backflow of blood due to pipeline negative pressure, and further occurrence of backflow phenomenon, as well as the possibility of air entering the vein through the empty tube and reaching the heart with the blood flow, resulting in serious consequences such as air embolism.

[0005] 2. The existing infusion flow regulator cannot buffer the drainage tube. During infusion, the infusion person may inadvertently move the arm or other limb parts, which may drag the drainage tube during the movement of the hand, possibly causing the drainage tube to fall off from the infusion stand, fixing clamp or patient's arm. In severe cases, the pulling force may cause the needle inclined surface fixed in the vein to deviate or partially come out, requiring re-needling and causing certain medical risks to the patient. SUMMARY

[0006] In view of the above problems in the prior art, the present application provides an infusion flow regulator to solve the problems that the roller extrusion mode of the existing infusion flow regulator cannot provide a prompt after the drug liquid is delivered, and cannot buffer the drainage tube when it is dragged.

[0007] The technical scheme adopted by the present application to solve the technical problems is as follows:

[0008] The infusion flow regulator comprises a drainage tube and a regulator main body arranged on the drainage tube, an adjusting assembly is arranged in the inner cavity of the regulator main body, a buffering assembly is arranged on the lower surface of the regulator main body, and the drainage tube penetrates through the regulator main body.

[0009] The adjusting assembly comprises adjusting mechanisms, two sets of the adjusting mechanisms are arranged on both sides of the inner cavity of the regulator body, a connecting rod is arranged between the top portions of the two sets of adjusting mechanisms, an alarm mechanism is arranged between the bottom portions of the two sets of adjusting mechanisms, and a pressing mechanism is arranged on the side of the inner cavity of the regulator body close to one of the two sets of adjusting mechanisms;

[0010] The adjusting mechanism comprises a fixed block fixedly arranged on the top of the inner wall of the main body, the fixed block is in the overall structure of a rectangular plate, a first threaded rod is rotatably arranged on the side wall of the fixed block, a receiving rod is fixedly arranged at each corner of the lower surface of the fixed block, a lifting rod is slidably arranged in the inner cavity of the receiving rod, the bottom end of the lifting rod penetrates the bottom end of the receiving rod and is fixedly provided with a lifting block, drive blocks are fixedly arranged on both sides of the upper surface of the lifting block, drive grooves are obliquely and penetratingly arranged on the drive blocks, first sliding blocks are slidably arranged on both sides of the lower surface of the fixed block, two sets of drive rods are fixedly arranged on the opposite sides of the two sets of first sliding blocks in cooperation with the two sets of drive grooves, the drive rods are slidably connected in the drive grooves, a limiting rod is fixedly arranged on the middle portion of the lower surface of the lifting block, an elastic rod is slidably arranged in the inner cavity of the limiting rod, the bottom end of the elastic rod penetrates the bottom end of the limiting rod and is fixedly provided with a clamping ring, a first spring is arranged in the upper portion of the inner cavity of the limiting rod, the top end of the elastic rod is fixedly provided with an inclined block, and the inclined surfaces of the two sets of inclined blocks are oppositely arranged.

[0011] Further, one end of the first threaded rod extends into the inner cavity of the fixed block and is threadedly connected with the first sliding block, the first spring is fixedly connected between the lifting block and the elastic rod, the inclined block and the limiting rod are slidably connected, the lower surface of the clamping ring is in contact with the drainage tube, one set of the first threaded rods is arranged on the side of the fixed block close to the pressing mechanism, and the other set of the first threaded rods is arranged on the side of the fixed block away from the pressing mechanism, the connecting rod is fixedly connected with the two sets of first threaded rods, and the connecting rod is rotatably connected with the fixed block.

[0012] Further, the alarm mechanism comprises a first connecting strip fixedly arranged on the upper surface of the inclined block away from the pressing mechanism, a fixed strip fixedly arranged on the lower surface of the first connecting strip close to the pressing mechanism, a first sliding rod penetrating and slidingly arranged at the bottom of the fixed strip, one end of the first sliding rod away from the fixed strip in contact with the inclined surface of the inclined block close to the pressing mechanism, a first adjusting bolt penetrating and threadedly arranged at one end of the first connecting strip close to the pressing mechanism, a second connecting strip fixedly arranged on the upper surface of the inclined block close to the pressing mechanism, a limiting strip fixedly arranged on the lower surface of the second connecting strip close to the first connecting strip, the first sliding rod penetrating and slidingly arranged at the bottom of the limiting strip, the first sliding rod and the limiting strip being slidingly connected in the horizontal and vertical directions, a first button fixedly arranged on the lower surface of one end of the second connecting strip close to the first connecting strip, a first alarm fixedly arranged on the upper surface of one end of the second connecting strip close to the first connecting strip, the first button being arranged above the first adjusting bolt in a matching mode, the first button and the first alarm being electrically connected, the first button being capable of controlling the first alarm to send an alarm when pressed, and a connecting plate fixedly arranged on the upper surface of one end of the first sliding rod away from the first sliding rod.

[0013] Further, the pressing mechanism comprises an elastic frame fixedly arranged on the inner wall of the regulator main body, an extrusion rod slidingly arranged in the inner cavity of the elastic frame, an extrusion plate penetrating and fixedly arranged at the bottom end of the extrusion rod, a connecting ring fixedly arranged on the upper portion of the extrusion rod, one end of the connecting ring penetrating the side wall of the elastic frame, a fixed ring fixedly arranged on one side of the elastic frame in a matching mode with the connecting ring, a plug inserted into the inner cavity of the fixed ring, the plug and the fixed ring being slidingly connected, and a second spring sleeved on the top of the outer surface of the extrusion rod.

[0014] Further, the second spring is fixedly connected between the inner wall of the elastic frame and the connecting ring, the connecting ring and the elastic frame being slidingly connected, the plug and the connecting ring being inserted into each other, and the plug and the connecting ring being slidingly connected, the lower surface of the extrusion plate being in abutment with the drainage tube, the plug and the second sliding rod being inserted into each other, and the second sliding rod and the plug being slidingly connected.

[0015] Further, the buffer assembly comprises a sliding plate slidingly arranged on the lower surface of the regulator body, both ends of the sliding plate are threadedly provided with second adjusting pins, both ends of the sliding plate are fixedly provided with a plurality of third sliding rods, the third sliding rods penetrate through and slidingly connect the regulator body, the outer surface of the third sliding rod is sleeved with a third spring, the third spring is fixedly connected between the inner wall of the sliding plate and the regulator body, the inner wall of the bottom of the regulator body is fixedly provided with two groups of second buttons in cooperation with two groups of second adjusting pins on both sides, the lower surface of the regulator body is fixedly provided with second alarms on both sides, the second buttons and the second alarms are electrically connected, and pressing the second buttons can control the second alarms to issue alarms, the lower surface of the sliding plate is provided with a floating mechanism, the lower surface of the floating mechanism is provided with a buffer mechanism, and both ends of the buffer mechanism are fixedly provided with clamping blocks.

[0016] Further, the floating mechanism comprises a limiting ring fixedly arranged on the middle of the lower surface of the sliding plate, a plurality of sliding grooves are uniformly and spaced apart arranged on the outer surface of the limiting ring in the circumferential direction, fourth sliding rods are slidingly arranged in the sliding grooves, floating discs are fixedly arranged on the opposite sides of the fourth sliding rods, the outer surface of the fourth sliding rod is sleeved with a fourth spring, and the middle of the outer surface of the fourth sliding rod is slidingly sleeved with a gasket.

[0017] Further, the gasket and the inner wall of the limiting ring are slidingly connected, the fourth spring is fixedly connected between the gasket and the floating disc, and the lower surface of the floating disc and the sliding plate are not in contact.

[0018] Further, the buffer mechanism comprises a buffer frame fixedly arranged on the lower surface of the floating disc, second sliding blocks are slidingly arranged on both sides of the inner cavity of the buffer frame, buffer rods are fixedly arranged on the opposite sides of the two groups of second sliding blocks, the outer surface of the buffer rod is sleeved with a fifth spring, a second threaded rod is rotatably arranged on the outer wall of the buffer frame, distance adjusting blocks are threadedly arranged at both ends of the second threaded rod, third alarms are fixedly arranged on the opposite sides of the two groups of distance adjusting blocks, and third buttons are fixedly arranged on the opposite sides of the two groups of distance adjusting blocks.

[0019] Further, the buffer rod and the buffer frame are slidingly connected, the fifth spring is fixedly connected between the second sliding block and the inner wall of the buffer frame, the threaded directions of both ends of the second threaded rod are opposite, the third alarms and the third buttons are electrically connected, and pressing the third buttons can control the third alarms to issue alarms, one end of the second sliding block close to the second threaded rod penetrates through the side wall of the buffer frame, one end of the second sliding block close to the second threaded rod and the third button are arranged in cooperation, the opposite sides of the two groups of buffer rods penetrate through the two side walls of the buffer frame and are fixedly connected with two groups of clamping blocks, a groove is formed in the bottom of the clamping block, the groove has a whole semicylindrical structure, and a convex strip is fixedly arranged on the inner wall of the groove, and the diameter of the groove is adapted to the diameter of the drainage tube.

[0020] The present application has the beneficial effects of:

[0021] 1、The present application effectively solves the problem that the traditional infusion flow regulator is easily adjusted excessively under external force and cannot prompt when the infusion is completed by adopting the adjusting assembly, which can stably adjust the flow rate of the drainage tube, automatically interrupt when the infusion is about to be completed, provide preparation time for subsequent processing of medical staff, and send an alarm to remind patients and medical staff to replace the infusion or pull out the indwelling needle, thereby avoiding the air in the drainage tube from entering the blood vessels of the patient and preventing the patient from appearing the phenomenon of backflow.

[0022] 2、The present application effectively solves the problem that the existing infusion flow regulator cannot buffer the drainage tube when it is dragged by adopting the buffer assembly, which can limit the drainage tube and flexibly fix the excess drainage tube, has a buffering effect when the infusion person inadvertently moves the limb parts such as arms, so that the drainage tube of the flexible fixing part produces buffering and floating, thereby preventing the drainage tube from falling off the infusion stand or the fixing clamp, and avoiding the indwelling needle from falling off the arm of the patient, and improving the protection effect on the patient during infusion. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a partial structure schematic view of the present application;

[0024] Figure 2 is a partial structure cross-sectional schematic view of the present application;

[0025] Figure 3 is a structure schematic view of the adjusting assembly of the present application;

[0026] Figure 4 is a structure schematic view of the adjusting mechanism of the present application;

[0027] Figure 5 is a structure schematic view of the elastic rod, clamping ring, inclined surface block and alarm mechanism of the present application;

[0028] Figure 6 is Figure 5 is an enlarged structure schematic view of position A in the present application;

[0029] Figure 7 is a structure schematic view of the connecting plate, second sliding rod and pressing mechanism of the present application;

[0030] Figure 8 is a structure schematic view of the regulator body, sliding plate, second adjusting pin, third sliding rod, third spring, second button and second alarm of the present application;

[0031] Figure 9 This is a partial structural schematic diagram of the regulator body and buffer assembly of the present invention;

[0032] Figure 10 This is a schematic diagram of the floating mechanism of the present invention;

[0033] Figure 11 This is a schematic diagram of the floating mechanism and buffer mechanism of the present invention.

[0034] In the diagram: 1. Regulator body; 2. Adjustment assembly; 21. Adjustment mechanism; 211. Fixing block; 212. First threaded rod; 213. Storage rod; 214. Lifting rod; 215. Lifting block; 216. Drive groove; 217. First slider; 218. Drive rod; 219. Limiting rod; 2110. Elastic rod; 2111. Clamping ring; 2112. First spring; 2113. Inclined block; 22. Connecting rod; 23. Alarm mechanism; 231. First connecting strip; 232. Fixing strip; 233. First slide rod; 234. First adjusting bolt; 235. Second connecting strip; 236. Limiting strip; 237. First button; 238. First alarm; 239. Connecting plate; 2310. Second slide rod; 24. Pressing mechanism; 241 1. Elastic frame; 242. Extrusion rod; 243. Extrusion plate; 244. Connecting ring; 245. Fixing ring; 246. Bolt; 247. Second spring; 3. Buffer assembly; 31. Slide plate; 32. Second adjusting bolt; 33. Third slide rod; 34. Third spring; 35. Second button; 36. Second alarm; 37. Floating mechanism; 371. Limiting ring; 372. Slide groove; 373. Floating disc; 374. Fourth slide rod; 375. Fourth spring; 376. Gasket; 38. Buffer mechanism; 381. Buffer frame; 382. Second slider; 383. Buffer rod; 384. Fifth spring; 385. Second threaded rod; 386. Adjustment block; 387. Third alarm; 388. Third button; 39. Locking block; 4. Drainage tube. Detailed Implementation

[0035] The present invention will now be described and illustrated in detail with reference to the accompanying drawings.

[0036] Example 1

[0037] like Figure 1 As shown, the infusion flow regulator includes a drainage tube 4 and a regulator body 1 disposed on the drainage tube 4. The inner cavity of the regulator body 1 is provided with an adjustment component 2, and the lower surface of the regulator body 1 is provided with a buffer component 3. The drainage tube 4 passes through the regulator body 1.

[0038] The regulator body 1 and the drainage tube 4 are integrally kept in sliding connection, and need to be moved under the action of external force, and under normal shaking or shaking, the regulator body 1 and the drainage tube 4 are kept relatively static due to the large friction force therebetween; the drainage tube 4 is part of the pipeline during infusion, one end of which is connected with a drop bottle, and the other end is connected with a retention needle, the flow rate of the liquid in the drainage tube 4 is controlled by the adjusting assembly 2 to generate extrusion on the drainage tube 4, so as to facilitate adjustment according to actual needs, and the drainage tube 4 can be automatically pressed tightly when the liquid in the drainage tube 4 is quickly delivered, the tube wall of the drainage tube 4 is pressed by external force to close the drainage tube 4, so as to prevent negative pressure from being formed in the drainage tube 4 to cause infusion interruption, and prevent back bleeding and other phenomena; the buffer assembly 3 can limit the drainage tube 4, and has a buffering effect when used by the patient, and when the drainage tube 4 is dragged by the acting force, the buffer assembly 3 can timely send an alarm to remind the patient to pay attention, and avoid the retention needle from falling off from the patient.

[0039] As shown in Figures 2-3 The adjusting assembly 2 comprises two groups of adjusting mechanisms 21, and the two groups of adjusting mechanisms 21 are arranged on both sides of the inner cavity of the regulator body 1, a connecting rod 22 is arranged between the top portions of the two groups of adjusting mechanisms 21, an alarm mechanism 23 is arranged between the bottom portions of the two groups of adjusting mechanisms 21, and a pressing mechanism 24 is arranged on the side of the inner cavity of the regulator body 1 close to one of the two groups of adjusting mechanisms 21;

[0040] The flow rate is adjusted by adjusting the size of the interstice of the drainage tube 4 through the adjusting mechanism 21; the connecting rod 22 is used for connecting the two groups of adjusting mechanisms 21, so that the two groups of adjusting mechanisms 21 respectively extrude the drainage tubes 4 on both sides of the inner cavity of the regulator body 1 to ensure the stability of the flow rate of the drainage tube 4; when the infusion is almost completed, the liquid in the drainage tube 4 at one end is exhausted, so that the two groups of adjusting mechanisms 21 have a certain position difference, at this time, the alarm mechanism 23 sends an alarm, and drives the pressing mechanism 24 to generate a large extrusion force on the drainage tube 4, so as to form a completely closed cross section in the drainage tube 4, avoid air entering the blood vessels of the infuser, and prevent back bleeding.

[0041] As shown in Figures 2-4As shown, the adjusting mechanism 21 comprises a fixed block 211 fixedly arranged at the top of the inner wall of the main body 1, which is in the form of a rectangular plate, a first threaded rod 212 rotatably arranged on the side wall of the fixed block 211, a receiving rod 213 fixedly arranged at each corner of the lower surface of the fixed block 211, a lifting rod 214 slidably arranged in the inner cavity of the receiving rod 213, a lifting block 215 fixedly arranged at the bottom end of the receiving rod 213, a driving block fixedly arranged on the upper surface of the lifting block 215, a driving groove 216 obliquely and penetratingly arranged on the driving block, a first sliding block 217 slidably arranged on the lower surface of the fixed block 211, two groups of driving rods 218 fixedly arranged on the opposite sides of the two groups of first sliding blocks 217, respectively, in cooperation with the two groups of driving grooves 216, the driving rod 218 being slidably connected in the driving groove 216, a limiting rod 219 fixedly arranged at the middle of the lower surface of the lifting block 215, an elastic rod 2110 slidably arranged in the inner cavity of the limiting rod 219, a clamping ring 2111 fixedly arranged at the bottom end of the elastic rod 2110, a first spring 2112 arranged at the upper portion of the inner cavity of the limiting rod 219, and an inclined block 2113 fixedly arranged at the top end of the elastic rod 2110, and the inclined surfaces of the two groups of inclined blocks 2113 being oppositely arranged.

[0042] One end of the first threaded rod 212 extends into the inner cavity of the fixed block 211 and is threadedly connected with the first sliding block 217, the first spring 2112 is fixedly connected between the lifting block 215 and the elastic rod 2110, the inclined block 2113 and the limiting rod 219 are slidably connected, the lower surface of the clamping ring 2111 is in contact with the drainage tube 4, one group of the first threaded rods 212 is arranged on the side of the fixed block 211 close to the pressing mechanism 24, and the other group of the first threaded rods 212 is arranged on the side of the fixed block 211 away from the pressing mechanism 24, the connecting rod 22 is fixedly connected with the two groups of first threaded rods 212, and the connecting rod 22 is rotatably connected with the fixed block 211.

[0043] When it is necessary to adjust the flow rate of the drainage tube 4, the first threaded rod 212 is rotated to drive the first sliding block 217 to move, the first sliding block 217 drives the driving rod 218 to move in the driving groove 216, and then the driving block is extruded to move, at this time, the lifting rod 214 moves in the storage rod 213 to drive the interval between the lifting block 215 and the fixed block 211 to change, the lifting block 215 drives the limiting rod 219 to move, the limiting rod 219 extrudes the elastic rod 2110 of the first spring 2112 to extrude the clamping ring 2111 to the drainage tube 4, and then the cavity of the drainage tube 4 changes to realize the adjustment of the flow rate; the connecting rod 22 can make the two first threaded rods 212 rotate at the same time, and then the two clamping rings 2111 can generate the same force on the drainage tube 4 at the same time, so that the flow rate of the drainage tube 4 after adjustment can be kept stable, and the problems of repeated movement and time waste in the roller adjustment mode and poor stability caused by the easy sliding of the roller in the regulator body 1 can be avoided; by setting two clamping rings 2111 to extrude the drainage tube 4 at the same time, the stability of the flow rate adjustment of the drainage tube 4 is improved, and the efficiency is ensured.

[0044] As Figure 3 and Figures 5-7As shown, the alarm mechanism 23 comprises a first connecting strip 231 fixedly arranged on the upper surface of the inclined block 2113 away from the compression mechanism 24, a fixed strip 232 fixedly arranged on the lower surface of the first connecting strip 231 close to the compression mechanism 24, a first sliding rod 233 penetrating and slidingly arranged at the bottom of the fixed strip 232, one end of the first sliding rod 233 away from the fixed strip 232 in contact with the inclined surface of the inclined block 2113 close to the compression mechanism 24, a first adjusting bolt 234 penetrating and threadedly arranged at one end of the first connecting strip 231 close to the compression mechanism 24, a second connecting strip 235 fixedly arranged on the upper surface of the inclined block 2113 close to the compression mechanism 24, a limiting strip 236 fixedly arranged on the lower surface of the second connecting strip 235 close to the first connecting strip 231, the first sliding rod 233 penetrating and slidingly arranged at the bottom of the limiting strip 236, and the first sliding rod 233 and the limiting strip 236 slidingly connected in horizontal and vertical directions, a first button 237 fixedly arranged on the lower surface of the second connecting strip 235 close to one end of the first connecting strip 231, a first alarm 238 fixedly arranged on the upper surface of the second connecting strip 235 close to one end of the first connecting strip 231, the first button 237 cooperatively arranged above the first adjusting bolt 234, the first button 237 and the first alarm 238 electrically connected, and pressing the first button 237 being capable of controlling the first alarm 238 to send an alarm, and a connecting plate 239 fixedly arranged on the upper surface of one end of the first sliding rod 233 away from the first sliding rod 233, and a second sliding rod 2310 fixedly arranged on the upper surface of the connecting plate 239 away from one end of the first sliding rod 233. The second connecting strip 235 is fixedly arranged on the upper surface of the inclined block 2113 close to the compression mechanism 24, so that the liquid in the drainage tube 4 close to the compression mechanism 24 is first pumped out when the infusion needle is punched, and a pressure difference is formed between the second connecting strip 235 and the first connecting strip 231.

[0045] The compression mechanism 24 comprises a resilient frame 241 fixedly arranged on the inner wall of the regulator main body 1, a pressing rod 242 slidingly arranged in the inner cavity of the resilient frame 241, a pressing plate 243 penetrating and fixedly arranged at the bottom end of the pressing rod 242, a connecting ring 244 fixedly arranged on the upper portion of the pressing rod 242, one end of the connecting ring 244 penetrating the side wall of the resilient frame 241, a fixed ring 245 fixedly arranged on one side of the resilient frame 241 in cooperation with the connecting ring 244, a plug 246 inserted into the inner cavity of the fixed ring 245, and the plug 246 and the fixed ring 245 slidingly connected, and a second spring 247 sleeved on the top of the outer surface of the pressing rod 242.

[0046] The second spring 247 is fixedly connected between the inner wall of the elastic frame 241 and the connecting ring 244, the connecting ring 244 and the elastic frame 241 are in sliding connection, the plug 246 and the connecting ring 244 are in engagement, and the plug 246 and the connecting ring 244 are in sliding connection, the lower surface of the extrusion plate 243 is attached to the drainage tube 4, the plug 246 and the second sliding rod 2310 are in engagement, and the second sliding rod 2310 and the plug 246 are in sliding connection. There is a certain friction between the connecting ring 244 and the plug 246, the plug 246 will not fall out of the connecting ring 244 when the regulator body 1 is freely placed, at this time the plug 246 limits the second sliding rod 2310, and the first sliding rod 233 and the fixed strip 232 remain relatively stationary when freely placed; when the fixed ring 245 and the connecting ring 244 are disengaged, the elastic force of the second spring 247 drives the connecting ring 244 to move downward, thereby driving the extrusion plate 243 to move downward and extruding the drainage tube 4.

[0047] In use, the connection mode of the drainage tube 4 is to connect a hanging bottle at one end and a retention needle at the other end, and the adjusting mechanism 21 close to the side of the compression mechanism 24 and the drainage tube 4 connected to the side close to the hanging bottle, so that the compression mechanism 24 can be controlled to quickly press the drainage tube 4 to stop the flow of a small amount of residual liquid medicine in the drainage tube 4, realize automatic interruption and alarm, and avoid the phenomenon that the blood returns when the infusion is almost completed without calling medical staff in time; under the joint action of the alarm mechanism 23 and the compression mechanism 24, the liquid flow can be quickly alarmed and terminated when the liquid medicine in the drainage tube 4 is almost finished, thereby avoiding the phenomenon of blood return; when the liquid medicine in the hanging bottle is almost finished, the liquid medicine in the drainage tube 4 gradually decreases, and when there is no liquid medicine in the drainage tube 4 close to the hanging bottle, the lack of liquid support in the drainage tube 4 moves the elastic rod 2110 downward under the elastic force of the first spring 2112, the movement of the elastic rod 2110 drives the inclined block 2113 to move downward, the movement of the inclined block 2113 drives the second connecting strip 235 to move downward, one end of the second connecting strip 235 drives the inclined block 2113 to extrude the first slide rod 233, and at the same time, the movement of the second connecting strip 235 drives the first button 237 and the first adjusting bolt 234 to be extruded, at this time, the first alarm 238 issues an alarm to remind the patient and medical staff that the liquid medicine has been delivered and needs to be replaced with a hanging bottle or pulled out of the retention needle; the interval between the first adjusting bolt 234 and the first button 237 can be adjusted by rotating the first adjusting bolt 234, which is convenient for adjusting the alarm interval according to the needs; when the inclined block 2113 extrudes the first slide rod 233, the first slide rod 233 moves in the limiting strip 236 along the horizontal and vertical directions, the movement of the first slide rod 233 drives the connecting plate 239 to move, the movement of the connecting plate 239 drives the second slide rod 2310 to move, the movement of the second slide rod 2310 drives the plug 246 to move, so that the plug 246 moves in the connecting ring 244 and the fixed ring 245, until the plug 246 and the connecting ring 244 are disengaged, at this time, the connecting ring 244 drives the extrusion rod 242 to move downward under the elastic force of the second spring 247, the movement of the extrusion rod 242 drives the extrusion plate 243 to press downward on the drainage tube 4; the second spring 247 is a spring with large elastic force, so that the extrusion plate 243 can flatten the drainage tube 4 by the elastic force of the second spring 247, that is, the inner cavity channel of the drainage tube 4 is closed, which can prevent air in the drainage tube 4 from entering the blood vessels of the patient, prevent the patient from having blood return, and provide preparation time for subsequent treatment of medical staff, thereby reducing the harm to the patient.

[0048] As Figures 8-9As shown, the buffer assembly 3 comprises a sliding plate 31 slidingly arranged on the lower surface of the regulator body 1, both ends of the sliding plate 31 are threadedly provided with second adjusting pins 32, both ends of the sliding plate 31 are fixedly provided with a plurality of third sliding rods 33, the third sliding rods 33 penetrate and slidingly connect the regulator body 1, the outer surface of the third sliding rods 33 is sleeved with third springs 34, the third springs 34 are fixedly connected between the sliding plate 31 and the inner wall of the regulator body 1, both sides of the bottom inner wall of the regulator body 1 are fixedly provided with two groups of second buttons 35 matched with two groups of second adjusting pins 32, both sides of the lower surface of the regulator body 1 are fixedly provided with second alarms 36, the second buttons 35 and the second alarms 36 are electrically connected, and pressing the second buttons 35 can control the second alarms 36 to issue alarms, the lower surface of the sliding plate 31 is provided with a floating mechanism 37, the lower surface of the floating mechanism 37 is provided with a buffer mechanism 38, both ends of the buffer mechanism 38 are fixedly provided with clamping blocks 39.

[0049] In use, the excess drainage tube 4 is clamped in the clamping block 39, when the patient's hand swings, it will drive the drainage tube 4 to move, when the drainage tube 4 moves, the buffer mechanism 38 can preliminarily buffer the drainage tube 4, the buffer mechanism 38 can float on the lower surface of the floating mechanism 37, thereby reducing the interaction force between the regulator body 1 and the drainage tube 4; when the floating mechanism 37 floats, it drives the sliding plate 31 to move on the lower surface of the regulator body 1, the movement of the sliding plate 31 drives the third sliding rods 33 to move and extrude the third springs 34, the elastic force of the third springs 34 can make the sliding plate 31 return to the initial position, thereby having a certain buffering effect when pulling the drainage tube 4; at the same time, when the pulling force is too large, the second adjusting pins 32 extrude the second buttons 35 to a certain extent, so that the second alarms 36 issue alarms to remind the patient to pay attention and prevent the indwelling needle from falling off; the interval between the second adjusting pins 32 and the second buttons 35 can be adjusted by rotating the second adjusting pins 32, which is convenient for adjusting the alarm interval according to the needs and timely reminding the patient.

[0050] As shown in Figures 9-11 the floating mechanism 37 comprises a limiting ring 371 fixedly arranged on the lower surface of the sliding plate 31, a plurality of sliding grooves 372 are uniformly and spaced apart on the outer surface of the limiting ring 371, a plurality of fourth sliding rods 374 are slidingly arranged in the sliding grooves 372, floating discs 373 are fixedly arranged on the opposite sides of the fourth sliding rods 374, fourth springs 375 are sleeved on the outer surfaces of the fourth sliding rods 374, and gaskets 376 are slidingly sleeved on the middle portions of the outer surfaces of the fourth sliding rods 374.

[0051] The gasket 376 and the inner wall of the limiting ring 371 are in sliding connection, the fourth spring 375 is fixedly connected between the gasket 376 and the floating disc 373, and the lower surface of the floating disc 373 is not in contact with the sliding plate 31.

[0052] The buffer mechanism 38 comprises a buffer frame 381 fixedly arranged on the lower surface of the floating disc 373, second sliding blocks 382 are slidingly arranged on both sides of the inner cavity of the buffer frame 381, buffer rods 383 are fixedly arranged on the opposite sides of the two groups of second sliding blocks 382, fifth springs 384 are sleeved on the outer surfaces of the buffer rods 383, a second threaded rod 385 is rotatably arranged on the outer wall of the buffer frame 381, distance adjusting blocks 386 are threadedly arranged at both ends of the second threaded rod 385, third alarms 387 are fixedly arranged on the opposite sides of the two groups of distance adjusting blocks 386, and third buttons 388 are fixedly arranged on the opposite sides of the two groups of distance adjusting blocks 386.

[0053] The buffer rods 383 and the buffer frame 381 are in sliding connection, the fifth springs 384 are fixedly connected between the second sliding blocks 382 and the inner wall of the buffer frame 381, the threaded directions of the two ends of the second threaded rod 385 are opposite, the third alarms 387 and the third buttons 388 are electrically connected, the third alarms 387 can be controlled to issue alarms by pressing the third buttons 388, one end of the second sliding block 382 close to the second threaded rod 385 penetrates through the side wall of the buffer frame 381, the one end of the second sliding block 382 close to the second threaded rod 385 and the third button 388 are arranged in a matched mode, the opposite sides of the two groups of buffer rods 383 penetrate through the two side walls of the buffer frame 381 and are fixedly connected with two groups of clamping blocks 39, recesses are formed in the bottoms of the clamping blocks 39, the recesses are in a semicylindrical structure as a whole, protrusions are fixedly arranged on the inner walls of the recesses, and the diameters of the recesses are adapted to the diameter of the drainage tube 4.

[0054] The groove and the convex strip can enable the drainage tube 4 to be stably clamped in the clamping block 39, ensure the buffering effect of the drainage tube 4 when being dragged, and avoid the drainage tube 4 from slipping in the clamping block 39; when the patient is sleeping or resting, the hand may inadvertently swing, at which time the clamping block 39 drives the buffer rod 383 to move in the inner cavity of the buffer frame 381, the movement of the buffer rod 383 drives the second sliding block 382 to generate extrusion on the fifth spring 384, the elastic force of the fifth spring 384 enables the clamping block 39 to have a flexible connection effect, and further enables the drainage tube 4 to have a buffering effect within a certain range; the distance adjusting block 386 is driven to move by rotating the second threaded rod 385, so that the distance between the third button 388 and the second sliding block 382 changes; when the distance moved by the second sliding block 382 during the buffering process is too large, the second sliding block 382 generates pressing on the third button 388, and further controls the third alarm 387 to issue an alarm, reminding the patient to pay attention to not casually swing the hand or the body to hit the infusion site, and preventing the indwelling needle from falling off; the third alarm 387, the second alarm 36 and the first alarm 238 respectively adopt alarm sounds with different loudness and tone, so as to facilitate the patient or the medical staff to distinguish and quickly find out the fault cause; the drainage tube 4 when being dragged will cause the buffer frame 381 to shake, the shaking of the buffer frame 381 drives the floating disc 373 to shake, the shaking of the floating disc 373 drives the fourth sliding rod 374 to move in the sliding groove 372, so that the floating disc 373 generates multidirectional floating in the limiting ring 371, and thus the drainage tube 4 has a better buffering effect when being dragged; the movement of the sliding plate 31 at the lower end face of the regulator main body 1 can further reduce the interaction force between the drainage tube 4 and the regulator main body 1 when the drainage tube 4 is dragged; the floating effect of the floating mechanism 37 and the buffering effect of the buffering mechanism 38 can improve the stability between the drainage tube 4 and the regulator main body 1, that is, reduce the possibility of the indwelling needle falling off.

[0055] In summary, by adjusting the assembly 2 to the drainage tube 4 extrusion and then control the liquid flow rate in the drainage tube 4, it is convenient to adjust according to the actual demand, and can be automatically pressed when the liquid in the drainage tube 4 is transported, the drainage tube 4 is pressed by external force, and the drainage tube 4 is closed, preventing the formation of negative pressure in the drainage tube 4 from causing infusion interruption, preventing back bleeding phenomenon; the buffer assembly 3 can limit the drainage tube 4, and has a buffering effect when the patient uses it, when the dragging force is generated to the drainage tube 4, the buffer assembly 3 can send an alarm in time, reminding the patient to pay attention, avoiding the indwelling needle from falling off the patient; by adjusting the adjusting mechanism 21 to control the size of the drainage tube 4 gap to adjust the flow rate, the connecting rod 22 is used to connect two groups of adjusting mechanism 21, so that two groups of adjusting mechanism 21 can extrude the drainage tube 4 on both sides of the adjusting device main body 1 respectively, ensuring the stability of the flow rate of the drainage tube 4; when the infusion is completed, the liquid in the drainage tube 4 at one end flows out, so that the two adjusting mechanisms 21 generate a certain position difference, at this time the alarm mechanism 23 sends an alarm, and drives the compression mechanism 24 to generate a large extrusion force on the drainage tube 4, so as to form a completely closed cross section in the drainage tube 4, avoiding air entering the blood vessels of the infusion person, and preventing back bleeding phenomenon; when in use, the excess drainage tube 4 is placed in the clamping block 39 and clamped, when the patient's hand swings, it will drive the drainage tube 4 to move, when the drainage tube 4 moves, the buffer mechanism 38 can preliminarily buffer the drainage tube 4, and the buffer mechanism 38 can float on the lower surface of the floating mechanism 37, thereby reducing the interaction force between the adjusting device main body 1 and the drainage tube 4; when the floating mechanism 37 floats, the sliding plate 31 moves on the lower surface of the adjusting device main body 1, the third sliding rod 33 moves and extrudes the third spring 34, the elastic force of the third spring 34 can make the sliding plate 31 return to the initial position, thereby having a certain buffering effect when pulling the drainage tube 4; at the same time, when the pulling force is too large, the second adjusting bolt 32 extrudes the second button 35, so that the second alarm 36 sends an alarm, reminding the patient to pay attention, preventing the indwelling needle from falling off; the second adjusting bolt 32 can be rotated to change the position of the second adjusting bolt 32 in the cavity of the sliding plate 31, adjust the distance between the second adjusting bolt 32 and the second button 35, and adjust the alarm distance according to the demand, reminding the patient in time.

Claims

1. An infusion flow regulator comprising a flow line (4) and a regulator body (1) arranged on the flow line (4), characterized in that, The inner cavity of the regulator body (1) is provided with an adjusting assembly (2), the lower surface of the regulator body (1) is provided with a buffer assembly (3), and the drainage tube (4) penetrates through the regulator body (1); The adjusting assembly (2) comprises adjusting mechanisms (21), two groups of the adjusting mechanisms (21) are arranged on the two sides of the inner cavity of the regulator body (1), a connecting rod (22) is arranged between the top portions of the two groups of adjusting mechanisms (21), an alarm mechanism (23) is arranged between the bottom portions of the two groups of adjusting mechanisms (21), and the inner cavity of the regulator body (1) is provided with a pressing mechanism (24) close to one side of the adjusting mechanism (21). The adjusting mechanism (21) comprises a fixed block (211) fixedly arranged on the top of the inner wall of the body (1), the fixed block (211) is in the form of a rectangular plate, a first threaded rod (212) is rotatably arranged on the side wall of the fixed block (211), a receiving rod (213) is fixedly arranged at the four corners of the lower surface of the fixed block (211), a lifting rod (214) is slidably arranged in the inner cavity of the receiving rod (213), the bottom end of the lifting rod (214) penetrates through the bottom end of the receiving rod (213) and is fixedly provided with a lifting block (215), drive blocks are fixedly arranged on the two sides of the upper surface of the lifting block (215), drive grooves (216) are obliquely and penetratingly arranged on the drive blocks, first sliding blocks (217) are slidably arranged on the two sides of the lower surface of the fixed block (211), two groups of drive rods (218) are fixedly arranged on the opposite sides of the two groups of first sliding blocks (217) and matched with the two groups of drive grooves (216), the drive rods (218) are slidably connected in the drive grooves (216), a limiting rod (219) is fixedly arranged on the middle portion of the lower surface of the lifting block (215), an elastic rod (2110) is slidably arranged in the inner cavity of the limiting rod (219), the bottom end of the elastic rod (2110) penetrates through the bottom end of the limiting rod (219) and is fixedly provided with a clamping ring (2111), a first spring (2112) is arranged on the upper portion of the inner cavity of the limiting rod (219), the top end of the elastic rod (2110) is fixedly provided with an inclined surface block (2113), and the inclined surfaces of the two groups of inclined surface blocks (2113) are oppositely arranged.

2. The infusion flow regulator of claim 1, wherein, One end of the first threaded rod (212) extends to the inner cavity of the fixed block (211) and is threadedly connected with the first sliding block (217), the first spring (2112) is fixedly connected between the lifting block (215) and the elastic rod (2110), the inclined block (2113) and the limiting rod (219) are slidingly connected, the lower surface of the clamping ring (2111) is attached to the drainage tube (4), one set of the first threaded rod (212) is arranged on one side of the fixed block (211) close to the pressing mechanism (24), the other set of the first threaded rod (212) is arranged on the other side of the fixed block (211) away from the pressing mechanism (24), the connecting rod (22) is fixedly connected with the two sets of first threaded rods (212), and the connecting rod (22) is rotationally connected with the fixed block (211).

3. The infusion flow regulator of claim 2, wherein, The alarm mechanism (23) comprises a first connecting strip (231) fixedly arranged on the upper surface of the inclined block (2113) away from the pressing mechanism (24), a fixed strip (232) is fixedly arranged on the lower surface of one side of the first connecting strip (231) close to the pressing mechanism (24), a first sliding rod (233) penetrates and is slidingly arranged at the bottom of the fixed strip (232), one end of the first sliding rod (233) away from the fixed strip (232) is in contact with the inclined surface of the inclined block (2113) close to the pressing mechanism (24), a first adjusting pin (234) is threadedly arranged at one end of the first connecting strip (231) close to the pressing mechanism (24), a second connecting strip (235) is fixedly arranged on the upper surface of the inclined block (2113) close to the pressing mechanism (24), a limiting strip (236) is fixedly arranged on the lower surface of one side of the second connecting strip (235) close to the first connecting strip (231), the first sliding rod (233) penetrates and is slidingly arranged at the bottom of the limiting strip (236), and the first sliding rod (233) and the limiting strip (236) are slidingly connected in the horizontal and vertical directions, a first button (237) is fixedly arranged on the lower surface of one end of the second connecting strip (235) close to the first connecting strip (231), a first alarm (238) is fixedly arranged on the upper surface of one end of the second connecting strip (235) close to the first connecting strip (231), the first button (237) is arranged above the first adjusting pin (234) in a matched mode, the first button (237) and the first alarm (238) are electrically connected, pressing the first button (237) can control the first alarm (238) to issue an alarm, a connecting plate (239) is fixedly arranged at the middle portion of the first sliding rod (233), and a second sliding rod (2310) is fixedly arranged on the upper surface of one end of the connecting plate (239) away from the first sliding rod (233).

4. The infusion flow regulator of claim 3, wherein, The pressing mechanism (24) comprises a resilient frame (241) fixedly arranged on the inner wall of the regulator body (1), an extrusion rod (242) slidably arranged in the inner cavity of the resilient frame (241), the bottom end of the extrusion rod (242) penetrating through the bottom end of the resilient frame (241) and fixedly arranged with an extrusion plate (243), the upper portion of the extrusion rod (242) fixedly arranged with a connecting ring (244), one end of the connecting ring (244) penetrating through the side wall of the resilient frame (241), one side of the resilient frame (241) fixedly arranged with a fixed ring (245) matched with the connecting ring (244), the inner cavity of the fixed ring (245) inserted with a plug (246), and the plug (246) and the fixed ring (245) being in sliding connection, and the top of the outer surface of the extrusion rod (242) sleeved with a second spring (247).

5. The infusion flow regulator of claim 4, wherein, The second spring (247) is fixedly connected between the inner wall of the resilient frame (241) and the connecting ring (244), the connecting ring (244) and the resilient frame (241) are in sliding connection, the plug (246) and the connecting ring (244) are inserted, and the plug (246) and the connecting ring (244) are in sliding connection, the lower surface of the extrusion plate (243) is attached to the drainage tube (4), the plug (246) is inserted with the second sliding rod (2310), and the second sliding rod (2310) and the plug (246) are in sliding connection.

6. The infusion flow regulator of claim 1, wherein, The buffer assembly (3) comprises a sliding plate (31) slidably arranged on the lower surface of the regulator body (1), the two ends of the sliding plate (31) are both threadedly arranged with a second adjusting bolt (32), the two ends of the sliding plate (31) are both fixedly arranged with a plurality of third sliding rods (33), the third sliding rods (33) penetrate through and are in sliding connection with the regulator body (1), the outer surface of the third sliding rod (33) is sleeved with a third spring (34), the third spring (34) is fixedly connected between the sliding plate (31) and the inner wall of the regulator body (1), the inner wall of the bottom of the regulator body (1) is fixedly arranged with two groups of second buttons (35) matched with the two groups of second adjusting bolts (32) on the two sides, respectively, the lower surface of the regulator body (1) is fixedly arranged with a second alarm (36) on the two sides, the second button (35) and the second alarm (36) are in electrical connection, pressing the second button (35) can control the second alarm (36) to issue an alarm, the lower surface of the sliding plate (31) is provided with a floating mechanism (37), the lower surface of the floating mechanism (37) is provided with a buffer mechanism (38), and the two ends of the buffer mechanism (38) are both fixedly arranged with a clamping block (39).

7. The infusion flow regulator of claim 6, wherein, The floating mechanism (37) comprises a limiting ring (371) fixedly arranged in the middle of the lower surface of the sliding plate (31), a plurality of sliding grooves (372) are uniformly and spaced apart on the outer surface of the limiting ring (371) in the circumferential direction, a fourth sliding rod (374) is slidably arranged in each of the sliding grooves (372), a floating disc (373) is fixedly arranged on the opposite side of the fourth sliding rod (374), a fourth spring (375) is sleeved on the outer surface of the fourth sliding rod (374), and a gasket (376) is slidably sleeved on the middle portion of the outer surface of the fourth sliding rod (374).

8. The infusion flow regulator of claim 7, wherein, The gasket (376) and the inner wall of the limiting ring (371) are slidably connected, the fourth spring (375) is fixedly connected between the gasket (376) and the floating disc (373), and the floating disc (373) is not in contact with the lower surface of the sliding plate (31).

9. The infusion flow regulator of claim 7, wherein, The buffer mechanism (38) comprises a buffer frame (381) fixedly arranged on the lower surface of the floating disc (373), second sliding blocks (382) are slidably arranged on both sides of the inner cavity of the buffer frame (381), buffer rods (383) are fixedly arranged on the opposite sides of the two groups of second sliding blocks (382), fifth springs (384) are sleeved on the outer surfaces of the buffer rods (383), a second threaded rod (385) is rotatably arranged on the outer wall of the buffer frame (381), distance adjusting blocks (386) are threadedly arranged at both ends of the second threaded rod (385), third alarms (387) are fixedly arranged on the opposite sides of the two groups of distance adjusting blocks (386), and third buttons (388) are fixedly arranged on the opposite sides of the two groups of distance adjusting blocks (386).

10. The infusion flow regulator of claim 9, wherein, The buffer rod (383) and the buffer frame (381) are slidably connected, the fifth spring (384) is fixedly connected between the second sliding block (382) and the inner wall of the buffer frame (381), the thread directions of the two ends of the second threaded rod (385) are opposite, the third alarm (387) and the third button (388) are electrically connected, pressing the third button (388) can control the third alarm (387) to issue an alarm, one end of the second sliding block (382) close to the second threaded rod (385) penetrates the side wall of the buffer frame (381), one end of the second sliding block (382) close to the second threaded rod (385) and the third button (388) are arranged in cooperation, the opposite sides of the two groups of buffer rods (383) penetrate the two side walls of the buffer frame (381) and are fixedly connected with two groups of clamping blocks (39), respectively, a groove is formed in the bottom of the clamping block (39), the groove has a semicylindrical structure as a whole, and a convex strip is fixedly arranged on the inner wall of the groove, and the diameter of the groove is adapted to the diameter of the drainage pipe (4).

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