Liquid stopping device for infusion pump and infusion pump

Abstract

The invention relates to the field of infusion pumps, in particular to a liquid stopping device for an infusion pump and the infusion pump, the liquid stopping device comprises an infusion mechanism, and the infusion mechanism is used for performing control processing and liquid stopping processing on the conveying speed of liquid medicine; an outer shell is fixedly installed on the outer side of the infusion mechanism, power equipment is fixedly installed on the top of the outer shell, a clamping sleeve is fixedly installed on the back of the outer shell, a threaded rod is in threaded connection with the interior of the clamping sleeve, and the clamping sleeve and the threaded rod are installed on an infusion frame in a matched mode. The contact surfaces between the trapezoidal head and the inclined plane block are inclined planes, so that the inclined plane block can compress the spring and drive the clamping piece connected with the other end of the inclined plane block to move towards the center, and the effects of limiting, clamping and protecting infusion tubes with different tube diameters are achieved through movement and contraction of the clamping piece.

Description

Technical Field

[0001] The present invention relates to the technical field of infusion pumps, and in particular to a liquid stopping device for an infusion pump and an infusion pump. Background Art

[0002] Infusion pumps are usually mechanical or electronic control devices that control the infusion rate by acting on the infusion catheter. They are often used in situations where the infusion volume and drug dosage need to be strictly controlled, such as when using pressor drugs, antiarrhythmic drugs, intravenous infusion of infants or intravenous anesthesia. The following is a discussion of the issues that should be paid attention to in the daily operation, maintenance and preservation of infusion pumps in combination with actual clinical applications.

[0003] There are several problems with the existing infusion pumps: 1. Different patients require different infusion tubes, so the diameter of the infusion tube will also affect the operation of the infusion pump, making it difficult to control the flow of the drug solution; 2. The existing drug solution stopping method is to manually press the drug solution by medical staff, which not only does not ensure that the drug solution stops flowing completely, but also causes damage to the operator's fingers over time. Summary of the invention

[0004] The present invention provides a liquid stopping device for an infusion pump and an infusion pump to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a liquid stopping device for an infusion pump, comprising an infusion mechanism, the infusion mechanism being used to control the delivery speed of a liquid medicine and to stop the liquid;

[0006] An outer shell is fixedly installed on the outside of the infusion mechanism, an electric power device is fixedly installed on the top of the outer shell, a clamping sleeve is fixedly installed on the back of the outer shell, and a threaded rod is connected to the inner thread of the clamping sleeve, wherein the clamping sleeve and the threaded rod are cooperatively installed on the water hanging rack;

[0007] The infusion mechanism includes an inner shell, which is fixedly connected to the inside of the outer shell, a limiting mechanism is fixedly installed on the top of the inner shell, a liquid stopping mechanism is fixedly installed on the bottom of the inner shell, an infusion component is arranged inside the inner shell, and a limiting column is arranged on the side of the infusion component.

[0008] Preferably, the infusion mechanism also includes a servo motor, which is fixedly connected to the bottom of the inner cavity of the inner shell, and the top of the servo motor shell is fixedly connected to a support column, and the top of the support column is fixedly connected to a panel, the center of the panel is rotatably connected to the output end of the servo motor, and the top of the panel is fixedly connected to a gear support shaft, and the top of the gear support shaft is rotatably connected to gear No. 1.

[0009] Preferably, the outer side of the No. 1 gear is meshed with the No. 2 gear, the side of the No. 2 gear away from the No. 1 gear is meshed with the No. 3 gear, the center of the No. 2 gear is fixedly connected to a connecting shaft, the bottom of the connecting shaft is fixedly connected to a transition shaft, the outer side of the transition shaft is extruded and adapted with a No. 1 bearing, the outer side of the No. 1 bearing is fixedly connected to an extension rod, and the bottom of the extension rod away from the No. 1 bearing is fixedly connected to a vertical rod.

[0010] Preferably, a No. 1 latch tooth is fixedly connected to the outer side of the transition shaft, and both ends of the No. 1 latch tooth are extruded and adapted with a No. 2 latch tooth, and the No. 2 latch tooth is fixedly connected to the outer side of the output end of the servo motor.

[0011] Preferably, the limiting mechanism includes a top rail, which is fixedly connected to the top of the inner shell body, a hydraulic rod is fixedly connected to the inner side of the top rail, a slide is fixedly connected to the end of the hydraulic rod away from the top rail, the slide is slidably adapted inside the top rail, a trapezoidal head is fixedly connected to the end of the slide away from the hydraulic rod, a loop is sleeved on the outer side of the slide, a center rod is fixedly connected to the bottom of the loop, the center rod is inserted through the outer side of the inner shell body and extends into the interior thereof, and the bottom of the center rod is connected to a patch plate via fasteners.

[0012] Preferably, an inner rail is fixedly installed at the bottom of the sticking plate, a first magnetic block is fixedly connected to the inner side of the inner rail, a second magnetic block is arranged at the end of the first magnetic block away from the inner rail, a sliding bar is fixedly connected to the end of the second magnetic block away from the first magnetic block, the sliding bar is slidably adapted inside the inner rail, and the bottom of the sliding bar is fixedly connected to the limiting column.

[0013] Preferably, inclined blocks are inserted on both sides of the snare, an extension plate is fixedly connected to the outer side of the inclined block, a spring is fixedly connected to the outer side of the extension plate, one end of the spring away from the extension plate is fixedly connected to the outer side of the snare, one end of the inclined block away from the extension plate is fixedly connected to a clamping plate, a pull rod is fixedly connected to the outer end surface of the clamping plate, one end of the pull rod away from the clamping plate is fixedly connected to the sliding bar, the outer side of the pull rod is transmission-connected to a fixed pulley, the center part of the fixed pulley is rotatably connected to a short shaft, and the short shaft is fixedly connected to the inside of the snare.

[0014] Preferably, the liquid-stopping mechanism includes a bottom rod and an electric push rod, a No. 1 transmission roller is installed at the bottom of the bottom rod, a roller seat is fixedly connected to the bottom of the electric push rod, a No. 2 transmission roller is rotatably connected to the inner side of the roller seat, and a sleeve plate is fixedly connected to the telescopic end of the electric push rod, and the top of the sleeve plate is fixedly connected to the vertical rod.

[0015] An infusion pump comprises an infusion component, wherein the infusion component comprises a No. 1 rotating shaft, the top end of the No. 1 rotating shaft is fixedly connected to a No. 3 gear, the outer side of the No. 1 rotating shaft is extruded and adapted with a No. 2 bearing, the outer side of the No. 2 bearing is extruded and adapted with a connecting plate, an end of the connecting plate away from the No. 1 rotating shaft is embedded with a nest, a side of the nest away from the connecting plate is fixedly connected with a bearing seat, the interior of the bearing seat is extruded and adapted with a No. 3 bearing, and the inner side of the No. 3 bearing is extruded and adapted with the No. 2 rotating shaft.

[0016] Preferably, a cam and a fifth gear are respectively fixedly connected to the outer side of the No. 2 rotating shaft, the outer side of the No. 5 gear is meshed with the fourth gear, the fourth gear is fixedly connected to the outer side of the No. 1 rotating shaft, the outer side of the cam is extruded with extrusion teeth, both ends of the extrusion teeth are symmetrically connected to side plates, the outer side of the side plate is fixedly connected to a return spring, the end of the return spring away from the side plate is fixedly connected to a fixing plate, the fixing plate is fixedly connected to the inner side of the inner shell, the side of the fixing plate close to the return spring is fixedly connected to the bearing seat, the extrusion teeth are inserted through the inner side of the fixing plate and extend to the outside.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The contact surfaces between the trapezoidal head and the inclined plane block are both inclined planes, so that the inclined plane block compresses the spring and moves toward the center with the clamping piece connected to the other end thereof. Through the movement and contraction of the clamping piece, the infusion tubes of different diameters can be limited, clamped and protected.

[0019] 2. For large-diameter infusion tubes, the limit column will wrap around the infusion tube, causing the infusion component to perform high-force peristaltic transport on it. The high-force peristaltic extrusion can more effectively overcome the gravity of the drug solution and the resistance inside the tube, ensuring that the drug solution can be accurately and stably infused into the patient's body at the set flow rate. It is especially suitable for situations where rapid infusion or infusion of high-viscosity drug solution is required.

[0020] 3. For small-diameter infusion tubes, the limit column will be slightly away from the infusion tube, causing the infusion component to perform a small-force peristaltic transport process on it. The small-force peristaltic extrusion can avoid excessive squeezing that causes the flow rate of the drug to be too fast or unstable, thereby more accurately controlling the infusion speed. For some special drugs or patient groups that require strict control of the infusion volume and infusion speed, such as children, the elderly, and patients with cardiovascular diseases, it can better meet the infusion accuracy requirements.

[0021] 4. During the rotation process, several cams will periodically impact each corresponding extrusion tooth, and the extrusion teeth that are partially impacted will extend outward, and several extrusion teeth will present a wavy peristaltic state, thereby playing the role of segmented delivery of the liquid medicine inside the infusion tube.

[0022] 5. When it is necessary to stop the liquid in the infusion tube, start the electric push rod, so that the roller seat connected to its telescopic end will move upward with the second transmission roller and compress the infusion tube, thereby stopping the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a schematic diagram of the external structure of a liquid stopping device for an infusion pump according to the present invention.

[0024] Figure 2 It is a schematic cross-sectional structural diagram of the present invention as a whole.

[0025] Figure 3 It is a structural schematic diagram of the infusion mechanism of the present invention.

[0026] Figure 4 Schematic diagram of the internal structure of the infusion mechanism of the present invention.

[0027] Figure 5 It is a schematic diagram of the uncovered structure of the infusion mechanism of the present invention.

[0028] Figure 6 Schematic diagram of the cross-sectional structure of some components of the infusion mechanism of the present invention

[0029] Figure 7 It is a schematic cross-sectional structural diagram of the infusion assembly of the present invention.

[0030] Figure 8 For the present invention Figure 6 Schematic diagram of the enlarged structure at point A in the middle.

[0031] Fig. 9 It is a schematic diagram of the structure of some components of the infusion assembly of the present invention.

[0032] Fig.10 It is a structural schematic diagram of the limiting mechanism of the present invention.

[0033] Fig.11 It is a schematic diagram of the longitudinal section structure of the limiting mechanism of the present invention.

[0034] Fig.12 It is a schematic cross-sectional structure diagram of the limiting mechanism of the present invention.

[0035] Fig.13 For the present invention Fig.11 Schematic diagram of the enlarged structure at point B in the middle.

[0036] Fig.14 It is a structural schematic diagram of the liquid stopping mechanism of the present invention.

[0037] In the figure: 1, outer shell; 2, power equipment; 3, clamping sleeve; 4, threaded rod; 5, infusion mechanism; 51, inner shell; 52, limit mechanism; 53, liquid stop mechanism; 54, infusion assembly; 55, limit column; 56, servo motor; 57, support column; 58, panel; 59, gear support shaft; 50, No. 1 gear; 501, No. 2 gear; 502, No. 3 gear; 503, connecting shaft; 504, transition shaft; 505, No. 1 clamping gear; 506, No. 2 clamping gear; 507, extension rod; 508, vertical rod; 509, No. 1 bearing; 541, No. 1 rotating shaft; 542, No. 2 bearing; 543, connecting plate; 544, nesting; 545, No. 3 bearing; 546, No. 2 rotating shaft; 547, cam; 548, extrusion teeth; 549, side plate; 540, return spring; 5401, fixed plate; 5402, gear No. 4; 5403, gear No. 5; 5404, bearing seat; 521, top rail; 522, hydraulic rod; 523, slide plate; 524, trapezoidal head; 525, snare; 526, center rod; 527, inclined block; 528, extension plate; 529, spring; 520, clamping piece; 5201, inner rail; 5202, magnetic block No. 1; 5203, magnetic block No. 2; 5204, slide bar; 5205, pull bar; 5206, fixed pulley; 5207, short shaft; 5208, pasting plate; 531, bottom rod; 532, transmission roller No. 1; 533, electric push rod; 534, roller seat; 535, transmission roller No. 2; 536, sleeve plate. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] See also Figures 1 to 14 The present invention provides a technical solution: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, it includes an infusion mechanism 5, which is used to control the delivery speed of the liquid medicine and stop the liquid;

[0040] An outer shell 1 is fixedly installed on the outside of the infusion mechanism 5, an electric power device 2 is fixedly installed on the top of the outer shell 1, a clamping sleeve 3 is fixedly installed on the back of the outer shell 1, and a threaded rod 4 is connected to the internal thread of the clamping sleeve 3, wherein the clamping sleeve 3 and the threaded rod 4 are cooperatively installed on the water hanging rack.

[0041] The infusion mechanism 5 includes an inner shell 51, which is fixedly connected to the inside of the outer shell 1, a limiting mechanism 52 is fixedly installed on the top of the inner shell 51, a liquid stopping mechanism 53 is fixedly installed on the bottom of the inner shell 51, an infusion component 54 is arranged inside the inner shell 51, and a limiting column 55 is arranged on the side of the infusion component 54.

[0042] The infusion mechanism 5 also includes a servo motor 56, which is fixedly connected to the bottom of the inner cavity of the inner shell 51. The top of the servo motor 56 shell is fixedly connected to a support column 57, and the top of the support column 57 is fixedly connected to a panel 58. The central part of the panel 58 is rotatably connected to the output end of the servo motor 56. The top of the panel 58 is fixedly connected to a gear support shaft 59, and the top of the gear support shaft 59 is rotatably connected to the first gear 50. The outer side of the first gear 50 is meshed with a second gear 501, and the side of the second gear 501 away from the first gear 50 is meshed with a third gear 502. The center of the No. 2 gear 501 is fixedly connected with a connecting shaft 503, the bottom of the connecting shaft 503 is fixedly connected with a transition shaft 504, the outer side of the transition shaft 504 is extruded and adapted with a No. 1 bearing 509, the outer side of the No. 1 bearing 509 is fixedly connected with an extension rod 507, the bottom of the extension rod 507 away from the No. 1 bearing 509 is fixedly connected with a vertical rod 508, the outer side of the transition shaft 504 is fixedly connected with a No. 1 tooth 505, both ends of the No. 1 tooth 505 are extruded and adapted with a No. 2 tooth 506, and the No. 2 tooth 506 is fixedly connected to the outer side of the output end of the servo motor 56. In addition, when a problem occurs with the equipment or the liquid medicine is transported irregularly, the electric push rod 533 is started again, causing the telescopic end of the electric push rod 533 to continue to contract during the liquid stopping process, and then the sleeve plate 536 fixedly connected to the outer side of the telescopic end of the electric push rod 533 will move the vertical rod 508 upward, wherein the top end of the vertical rod 508 is connected to the extension rod 507, and the other end of the extension rod 507 is connected to the transition shaft 504 through the No. 1 bearing 509, and finally the transition shaft 504 will separate the No. 1 tooth 505 from the No. 2 tooth 506, and at this time, except for the servo motor 56, all other parts of the entire device stop operating, thereby achieving the effect of timely emergency stop of the entire device to avoid the occurrence of the problem again later.

[0043] like Figure 7 , Figure 8 and Fig. 9As shown, an infusion pump includes an infusion component 54, and the infusion component 54 includes a No. 1 rotating shaft 541. The top end of the No. 1 rotating shaft 541 is fixedly connected to the No. 3 gear 502, the outer side of the No. 1 rotating shaft 541 is extruded and adapted with a No. 2 bearing 542, the outer side of the No. 2 bearing 542 is extruded and adapted with a connecting plate 543, the end of the connecting plate 543 away from the No. 1 rotating shaft 541 is embedded with a nesting 544, the side of the nesting 544 away from the connecting plate 543 is fixedly connected with a bearing seat 5404, the interior of the bearing seat 5404 is extruded and adapted with a No. 3 bearing 545, and the inner side of the No. 3 bearing 545 is extruded and adapted with a No. 2 rotating shaft 546.

[0044] The outer side of the No. 2 rotating shaft 546 is fixedly connected with a cam 547 and a No. 5 gear 5403 respectively, the outer side of the No. 5 gear 5403 is meshed with a No. 4 gear 5402, and the No. 4 gear 5402 is fixedly connected to the outer side of the No. 1 rotating shaft 541, and the outer side of the cam 547 is extruded and adapted with extrusion teeth 548, and both ends of the extrusion teeth 548 are symmetrically connected to side plates 549, and the outer side of the side plate 549 is fixedly connected with a return spring 540, and the end of the return spring 540 away from the side plate 549 is fixedly connected with a fixed plate 5401, and the fixed plate 5401 is fixedly connected to the inner side of the inner shell 51, and the side of the fixed plate 5401 close to the return spring 540 is fixedly connected to the bearing seat 5404, and the extrusion teeth 548 are inserted into the inner side of the fixed plate 5401 and extend to the outside. When the infusion tube is closed, the servo motor 56 is started, so that the output end thereof is squeezed and matched with the first gear 505 through the second gear 506, and the first gear 505 is connected to the transition shaft 504, and the top of the transition shaft 504 is connected to the second gear 501 through the connecting shaft 503. At this time, the second gear 501 will respectively engage with the first gear 50 and the third gear 502 arranged on both sides thereof. With the rotation of the third gear 502, the first rotating shaft 541 connected to the center part thereof will rotate, and the outer portion of the first rotating shaft 541 will rotate. The side of the No. 4 gear 5402 is connected to the No. 4 gear 5402, and the outer side of the No. 4 gear 5402 is meshed with the No. 5 gear 5403 for transmission. Therefore, the No. 2 rotating shaft 546 connected to the central part of the No. 5 gear 5403 will rotate with the several cams 547, and then the several cams 547 in the rotation process will periodically collide with each of the corresponding extrusion teeth 548, and the extrusion teeth 548 that are partially impacted will extend outward, and several extrusion teeth 548 will present a wavy peristaltic state, thereby playing the role of segmented transportation of the liquid medicine inside the infusion tube.

[0045] like Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.14As shown, the limiting mechanism 52 includes a top rail 521, which is fixedly connected to the top of the inner shell 51, and a hydraulic rod 522 is fixedly connected to the inner side of the top rail 521. The end of the hydraulic rod 522 away from the top rail 521 is fixedly connected to a slide plate 523, and the slide plate 523 is slidably adapted inside the top rail 521. The end of the slide plate 523 away from the hydraulic rod 522 is fixedly connected to a trapezoidal head 524, and the outer side of the slide plate 523 is sleeved with a snare 525, and the bottom of the snare 525 is fixedly connected to a center rod 526, and the center rod 526 is inserted into the inner shell 51. The bottom of the center rod 526 is connected to the outer side and extends to the inside thereof, and a plate 5208 is connected to the bottom of the plate 5208 through a fastener, and an inner rail 5201 is fixedly installed, and a No. 1 magnetic block 5202 is fixedly connected to the inner side of the inner rail 5201, and a No. 2 magnetic block 5203 is arranged at one end of the No. 1 magnetic block 5202 away from the inner rail 5201, and a slide bar 5204 is fixedly connected to one end of the No. 2 magnetic block 5203 away from the No. 1 magnetic block 5202, and the slide bar 5204 is slidably adapted inside the inner rail 5201, and the bottom of the slide bar 5204 is fixedly connected to the limit column 55. By rotating the threaded rod 4 forward, the threaded rod 4 is extended outward from the clamping sleeve 3, and then the clamping sleeve 3 is clamped on the water-lifting rod, and finally the threaded rod 4 is reversely rotated, so that the entire device will be fixedly suspended on the water-lifting rod. The infusion tube is passed through the center of the snare 525 and attached to the surface of the limiting column 55 until it passes downward from the limiting mechanism 52 at the bottom. Then the hydraulic rod 522 is started, so that the slide plate 523 connected to the telescopic end thereof moves outward along the inner wall of the top rail 521 and passes through the snare 525 with the trapezoidal head 524, and then the trapezoidal head 524 presses the inclined block 527, wherein the contact surfaces between the trapezoidal head 524 and the inclined block 527 are both inclined surfaces, so that the inclined block 527 compresses the spring 529 and moves toward the center with the clamping piece 520 connected to the other end thereof, wherein the spring 529 respectively plays the role of resetting the extension plate 528 and the inclined block 527, and through the movement and contraction of the clamping piece 520, the infusion tubes of different diameters are limited, clamped and protected.

[0046] Bevel blocks 527 are inserted on both sides of the snare 525, and an extension plate 528 is fixedly connected to the outer side of the bevel block 527, and a spring 529 is fixedly connected to the outer side of the extension plate 528. One end of the spring 529 away from the extension plate 528 is fixedly connected to the outer side of the snare 525, and one end of the bevel block 527 away from the extension plate 528 is fixedly connected to the outer side of the snare 525. A clamping piece 520 is fixedly connected to the outer end surface of the clamping piece 520, and one end of the pull bar 5205 away from the clamping piece 520 is fixedly connected to the sliding bar 5204. The outer side of the pull bar 5205 is transmission-connected to a fixed pulley 5206, and a short shaft 5207 is rotatably connected to the center of the fixed pulley 5206, and the short shaft 5207 is fixedly connected to the inside of the snare 525. As the clamping piece 520 moves toward the center of the trap 525, the pull bar 5205 fixedly connected to the outer end surface thereof moves inwardly, and the other end of the pull bar 5205 is connected to the slide bar 5204, wherein the second magnetic block 5203 fixedly connected to the outer side of the slide bar 5204 and the first magnetic block 5202 fixedly connected to the inner side of the inner rail 5201 maintain an attractive relationship between them, so when the pull bar 5205 moves toward the center, the pull bar 5205 no longer pulls the slide bar 5204, and then the slide bar 5204 is pulled. 204 will move outward along the inner rail 5201 under the attraction of the two magnetic blocks, and the limiting column 55 fixedly connected to its bottom will also move outward accordingly. For the infusion tube with a large diameter, the limiting column 55 will wrap the infusion tube, causing the infusion component 54 to perform a strong peristaltic transport treatment on it. The strong peristaltic extrusion can more effectively overcome the gravity of the drug solution and the resistance in the tube, ensuring that the drug solution can be accurately and stably infused into the patient's body at the set flow rate, which is especially suitable for situations where rapid infusion or infusion of high-viscosity drug solution is required.

[0047] For an infusion tube with a small diameter, the limit column 55 will be slightly away from the infusion tube, causing the infusion component 54 to perform a small-force peristaltic transport process on it. The small-force peristaltic extrusion can avoid excessive squeezing that causes the flow rate of the drug solution to be too fast or unstable, thereby more accurately controlling the infusion speed. For some special drugs or patient groups that require strict control of the infusion volume and infusion speed, such as children, the elderly, and patients with cardiovascular diseases, it can better meet the infusion accuracy requirements.

[0048] The liquid stopping mechanism 53 includes a bottom rod 531 and an electric push rod 533. A No. 1 transmission roller 532 is installed at the bottom of the bottom rod 531. A roller seat 534 is fixedly connected to the bottom of the electric push rod 533. A No. 2 transmission roller 535 is rotatably connected to the inner side of the roller seat 534. A sleeve 536 is fixedly connected to the telescopic end of the electric push rod 533. The top of the sleeve 536 is fixedly connected to the vertical rod 508. The infusion tube extending from the bottom end of the inner shell 51 will pass through the bottom of the No. 1 transmission roller 532 and the top of the No. 2 transmission roller 535 in sequence and finally extend from the bottom of the outer shell 1. When it is necessary to stop the liquid in the infusion tube, the electric push rod 533 is started, so that the roller seat 534 connected to the telescopic end thereof will move upward with the No. 2 transmission roller 535 and compress and squeeze the infusion tube, thereby playing the role of stopping the liquid.

[0049] When the present invention is used, first, the threaded rod 4 is rotated forward so that the threaded rod 4 extends outward from the clamping sleeve 3, and then the clamping sleeve 3 is clamped on the water-suspending rod, and finally the threaded rod 4 is rotated backward so that the whole device is fixedly suspended on the water-suspending rod. The infusion tube is passed through the center of the snare 525 and attached to the surface of the limiting column 55 until it passes downward from the limiting mechanism 52 at the bottom. Then the hydraulic rod 522 is started so that the slide plate 523 connected to the telescopic end thereof moves outward along the inner wall of the top rail 521 and passes through the snare 525 with the trapezoidal head 524, and then the trapezoidal head 524 squeezes the inclined plane block 527, so that the inclined plane block 527 compresses the spring 529 and moves toward the center with the clamping piece 520 connected to the other end thereof, so as to realize the limiting and protection treatment of the infusion tube. As the clamping piece 520 moves toward the center of the trap 525, the pull bar 5205 fixedly connected to its outer end surface will move inward accordingly, and the other end of the pull bar 5205 is connected to the slide bar 5204, wherein the second magnetic block 5203 fixedly connected to the outer side of the slide bar 5204 and the first magnetic block 5202 fixedly connected to the inner rail 5201 maintain an attractive relationship between them, so when the pull bar 5205 moves toward the center, the pull bar 5205 no longer pulls the slide bar 5204, and then the slide bar 5204 will move outward along the inner rail 5201 under the attraction of the two magnetic blocks, and then the limit column 55 fixedly connected to its bottom will also move outward accordingly.

[0050] When the infusion tube is closed, the servo motor 56 is started, so that the output end thereof is squeezed and adapted with the first gear 505 through the second gear 506, and the first gear 505 is connected to the transition shaft 504, and the top of the transition shaft 504 is connected to the second gear 501 through the connecting shaft 503. At this time, the second gear 501 will respectively engage with the first gear 50 and the third gear 502 arranged on both sides thereof. With the rotation of the third gear 502, the first shaft connected to the center thereof is 541 will rotate, and the outer side of the No. 1 rotating shaft 541 is connected to the No. 4 gear 5402, and the outer side of the No. 4 gear 5402 is meshed with the No. 5 gear 5403 for transmission. Therefore, the No. 2 rotating shaft 546 connected to the center of the No. 5 gear 5403 will rotate with the several cams 547, and then the cams 547 in the rotating process will periodically collide with the extrusion teeth 548, and the extrusion teeth 548 that are partially collided will extend outward to realize the squeezing of the infusion tube and the delivery of the drug solution.

[0051] The infusion tube extending from the bottom of the inner shell 51 will pass under the first transmission roller 532 and over the second transmission roller 535 in sequence and finally extend from the bottom of the outer shell 1. When the liquid medicine inside the infusion tube needs to be stopped, the electric push rod 533 is started, so that the roller seat 534 connected to the telescopic end thereof will move upward with the second transmission roller 535 and compress the infusion tube to stop the liquid medicine. In addition, when a problem occurs with the equipment or the liquid medicine is transported irregularly, the electric push rod 533 is started again, causing the telescopic end of the electric push rod 533 to continue to contract during the liquid stopping process. Subsequently, the sleeve plate 536 fixedly connected to the outer side of the telescopic end of the electric push rod 533 will move the vertical rod 508 upward, wherein the top end of the vertical rod 508 is connected to the extension rod 507, and the other end of the extension rod 507 is connected to the transition shaft 504 through the No. 1 bearing 509. Finally, the transition shaft 504 will separate the No. 1 tooth 505 from the No. 2 tooth 506. At this time, except for the servo motor 56, all other parts of the entire device stop operating.

[0052] The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work all fall within the scope of protection of the present invention.

Claims

1. A liquid stopping device for an infusion pump, characterized in that: include: An infusion mechanism (5), the infusion mechanism (5) being used to control the delivery speed of the liquid medicine and to stop the liquid medicine; An outer shell (1) is fixedly mounted on the outside of the infusion mechanism (5), an electric power device (2) is fixedly mounted on the top of the outer shell (1), a clamping sleeve (3) is fixedly mounted on the back of the outer shell (1), and a threaded rod (4) is connected to the inner thread of the clamping sleeve (3), wherein the clamping sleeve (3) and the threaded rod (4) are mounted on a water hanging rack in a coordinated manner; The infusion mechanism (5) comprises an inner shell (51), the inner shell (51) is fixedly connected to the inside of the outer shell (1), a limiting mechanism (52) is fixedly installed on the top of the inner shell (51), a liquid stopping mechanism (53) is fixedly installed on the bottom of the inner shell (51), an infusion component (54) is arranged inside the inner shell (51), and a limiting column (55) is arranged on the side of the infusion component (54).

2. A liquid stopping device for an infusion pump according to claim 1, characterized in that: The infusion mechanism (5) further comprises a servo motor (56), wherein the servo motor (56) is fixedly connected to the bottom of the inner cavity of the inner shell (51), the top of the shell of the servo motor (56) is fixedly connected to a support column (57), the top of the support column (57) is fixedly connected to a panel (58), the center of the panel (58) is rotatably connected to the output end of the servo motor (56), the top of the panel (58) is fixedly connected to a gear support shaft (59), and the top of the gear support shaft (59) is rotatably connected to the first gear (50).

3. A liquid stopping device for an infusion pump according to claim 2, characterized in that: The outer side of the No. 1 gear (50) is meshed with a No. 2 gear (501), and the side of the No. 2 gear (501) away from the No. 1 gear (500) is meshed with a No. 3 gear (502). The center of the No. 2 gear (501) is fixedly connected with a connecting shaft (503), and the bottom of the connecting shaft (503) is fixedly connected with a transition shaft (504). The outer side of the transition shaft (504) is extruded and adapted with a No. 1 bearing (509), and the outer side of the No. 1 bearing (509) is fixedly connected with an extension rod (507), and the bottom of the extension rod (507) away from the No. 1 bearing (509) is fixedly connected with a vertical rod (508).

4. A liquid stopping device for an infusion pump according to claim 3, characterized in that: The outer side of the transition shaft (504) is fixedly connected to a first latch tooth (505), and both ends of the first latch tooth (505) are extruded and adapted with a second latch tooth (506), and the second latch tooth (506) is fixedly connected to the outer side of the output end of the servo motor (56).

5. The liquid stopping device for an infusion pump according to claim 1, characterized in that: The limiting mechanism (52) comprises a top rail (521), wherein the top rail (521) is fixedly connected to the top of the inner shell (51), a hydraulic rod (522) is fixedly connected to the inner side of the top rail (521), an end of the hydraulic rod (522) away from the top rail (521) is fixedly connected to a slide plate (523), the slide plate (523) is slidably fitted inside the top rail (521), an end of the slide plate (523) away from the hydraulic rod (522) is fixedly connected to a trapezoidal head (524), a snare (525) is sleeved on the outer side of the slide plate (523), a center rod (526) is fixedly connected to the bottom of the snare (525), the center rod (526) is inserted into the outer side of the inner shell (51) and extends into the inner side, and the bottom of the center rod (526) is connected to a plate (5208) via a fastener.

6. A liquid stopping device for an infusion pump according to claim 5, characterized in that: An inner rail (5201) is fixedly installed at the bottom of the sticking plate (5208), a first magnetic block (5202) is fixedly connected to the inner side of the inner rail (5201), a second magnetic block (5203) is arranged at the end of the first magnetic block (5202) away from the inner rail (5201), a sliding bar (5204) is fixedly connected to the end of the second magnetic block (5203) away from the first magnetic block (5202), the sliding bar (5204) is slidably adapted inside the inner rail (5201), and the bottom of the sliding bar (5204) is fixedly connected to the limiting column (55).

7. The liquid stopping device for an infusion pump according to claim 5, characterized in that: Both sides of the snare (525) are plugged with inclined plane blocks (527), the outer side of the inclined plane block (527) is fixedly connected to an extension plate (528), the outer side of the extension plate (528) is fixedly connected to a spring (529), one end of the spring (529) away from the extension plate (528) is fixedly connected to the outer side of the snare (525), and one end of the inclined plane block (527) away from the extension plate (528) is fixedly connected to a clamping plate (520). ), a pull bar (5205) is fixedly connected to the outer end surface of the clamping plate (520), and the end of the pull bar (5205) away from the clamping plate (520) is fixedly connected to the slide bar (5204), and the outer side of the pull bar (5205) is transmission-connected to a fixed pulley (5206), and the center part of the fixed pulley (5206) is rotatably connected to a short shaft (5207), and the short shaft (5207) is fixedly connected to the inside of the snare (525).

8. The liquid stopping device for an infusion pump according to claim 1, characterized in that: The liquid-stopping mechanism (53) comprises a bottom rod (531) and an electric push rod (533); a first transmission roller (532) is installed at the bottom of the bottom rod (531); a roller seat (534) is fixedly connected to the bottom of the electric push rod (533); a second transmission roller (535) is rotatably connected to the inner side of the roller seat (534); a sleeve plate (536) is fixedly connected to the telescopic end of the electric push rod (533); and the top of the sleeve plate (536) is fixedly connected to the vertical rod (508).

9. An infusion pump, used for the liquid stopping device for an infusion pump according to claim 1, comprising an infusion assembly (54), characterized in that: The infusion assembly (54) comprises a first rotating shaft (541), the top end of the first rotating shaft (541) is fixedly connected to a third gear (502), the outer side of the first rotating shaft (541) is extruded and adapted to be equipped with a second bearing (542), the outer side of the second bearing (542) is extruded and adapted to be equipped with a connecting plate (543), the end of the connecting plate (543) away from the first rotating shaft (541) is embedded with a nesting (544), the side of the nesting (544) away from the connecting plate (543) is fixedly connected to a bearing seat (5404), the interior of the bearing seat (5404) is extruded and adapted to be equipped with a third bearing (545), and the inner side of the third bearing (545) is extruded and adapted to be equipped with a second rotating shaft (546).

10. An infusion pump according to claim 9, characterized in that: The outer side of the second rotating shaft (546) is respectively fixedly connected with a cam (547) and a fifth gear (5403), the outer side of the fifth gear (5403) is meshed with a fourth gear (5402), the fourth gear (5402) is fixedly connected to the outer side of the first rotating shaft (541), the outer side of the cam (547) is extruded with an extrusion tooth (548), both ends of the extrusion tooth (548) are symmetrically connected with a side plate (549), the side plates (549) are connected to the outer side of the cam (547), and the side plates (549) are connected to the outer side of the cam (547). A return spring (540) is fixedly connected to the outer side of the disk (549), and a fixed plate (5401) is fixedly connected to the end of the return spring (540) away from the side disk (549). The fixed plate (5401) is fixedly connected to the inner side of the inner shell (51), and the side of the fixed plate (5401) close to the return spring (540) is fixedly connected to the bearing seat (5404), and the extrusion teeth (548) are inserted into the inner side of the fixed plate (5401) and extend to the outside.

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