Medical automatic infusion pump

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a medical automatic infusion pump. Comprising a main machine shell, and one side of the main machine shell is provided with an extrusion channel used for installing an infusion tube; one end of the surface cover is rotatably connected with the host shell, and the other end of the surface cover is provided with a plurality of door pins; the locking mechanism is arranged in the host shell and comprises a first motor, a transmission assembly connected with the first motor and a lock catch assembly connected with the transmission assembly, and the lock catch assembly comprises a linkage rod and a plurality of lock catches connected to the linkage rod; when the surface cover is closed, the door pin is close to the lock catch, and the first motor drives the lock catch to move to hook the door pin, so that the surface cover is in a locked state; the wriggling mechanism is mounted in the main machine shell, extends to the extrusion channel and is used for wriggling and extruding the infusion tube. According to the utility model, the automatic locking and unlocking functions of the surface cover are realized, so that the usability of the infusion pump is obviously improved, the operation burden of medical personnel is greatly reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a medical automatic infusion pump. Background Art

[0002] In the medical field, as an important medical device, an infusion pump is widely used to accurately deliver a liquid medicine into a patient's body. A traditional infusion pump generally includes a main unit and a face cover. A peristaltic pump sheet is installed inside the main unit, and the peristaltic pump sheet squeezes an infusion tube to achieve the delivery of the liquid medicine and the precise control of the infusion process. The face cover is connected to the main unit through a flip-type mechanism, allowing medical staff to conveniently open and close the face cover for replacing or maintaining the infusion tube.

[0003] However, in the existing infusion pumps, the locking and unlocking operations between the main unit and the face cover usually rely on medical staff to manually operate a door handle or a similar mechanical structure. This operation method not only increases the workload of medical staff, but also may have problems such as inconvenient operation and low efficiency during use.

[0004] Therefore, there is an urgent need for a medical automatic infusion pump that can reduce the operation burden of medical staff and improve the operation efficiency. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a medical automatic infusion pump for the deficiencies of the existing technology. By realizing the automatic locking and unlocking functions of the face cover, the usability of the infusion pump is significantly improved, the operation burden of medical staff is greatly reduced, and the operation efficiency is improved.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A medical automatic infusion pump, comprising:

[0008] A main unit housing, on one side of the main unit housing, there is an extrusion channel for installing an infusion tube;

[0009] A face cover disposed close to the extrusion channel, one end of the face cover is rotatably connected to the main unit housing, and the other end is provided with a plurality of door pins;

[0010] A locking mechanism disposed inside the main unit housing, the locking mechanism includes a first motor, a transmission component connected to the first motor, and a lock component connected to the transmission component. The lock component includes a linkage rod and a plurality of locks connected to the linkage rod; when the face cover is closed, the door pins will approach the locks, and the first motor drives the locks to move to hook the door pins, so that the face cover is in a locked state;

[0011] A peristaltic mechanism installed in the main housing and extending to the extrusion channel for peristaltically squeezing the infusion tube.

[0012] Further, the transmission assembly includes a lead screw connected to the first motor, and a moving nut sleeved on the lead screw. A transmission rod is provided on the moving nut and connected to the linkage rod.

[0013] Further, the locking mechanism further includes a manual adjustment assembly connected to the lead screw. The manual adjustment assembly extends outside the main housing for manually adjusting the rotation of the lead screw.

[0014] Further, the manual adjustment assembly includes an adjustment rod. A first bevel gear is provided on the adjustment rod. A second bevel gear is coaxially connected to one end of the lead screw away from the first motor. The first bevel gear meshes with the second bevel gear.

[0015] Further, the first motor is connected to the lead screw through a first coupling, and the lead screw is connected to the second bevel gear through a second coupling.

[0016] Further, the latch includes a hook end, a movable end, and a rotating end located between the hook end and the movable end. The rotating end is installed on the main housing. The movable end is connected to the linkage rod. The hook end is used to hook the door bolt.

[0017] Further, the peristaltic mechanism includes:

[0018] A second motor;

[0019] A rotating shaft drivingly connected to the second motor. A cam group is sleeved on the rotating shaft;

[0020] A pump vane assembly corresponding to the cam group. When the second motor drives the rotating shaft to rotate, the cam group alternately pushes the pump vane assembly to peristaltically squeeze the infusion tube;

[0021] A pressure tube block matching with the pump vane assembly is provided on the inner side of the face cover.

[0022] Further, the pump vane assembly includes a plurality of peristaltic pump vanes and at least one blocking pump vane. A blocking tip is provided at one end of the blocking pump vane close to the infusion tube for segmentally pushing the liquid in the infusion tube.

[0023] Further, a liquid stop switch and a liquid stop clip are provided on the main housing close to the extrusion channel. A trigger part matching with the liquid stop switch is provided on the inner side of the face cover. When the face cover is unlocked and opened, the trigger part is away from the liquid stop switch, and the liquid stop clip will clamp the infusion tube.

[0024] Further, an air detector and a pressure sensor are provided in the extrusion channel.

[0025] Advantages of the present utility model:

[0026] Through the cooperation of the locking mechanism and the door pin of the face cover, the first motor drives the movement of the transmission component and the lock component to realize the automatic locking and unlocking of the face cover; by setting the peristaltic mechanism to peristaltically extrude the infusion tube, precise control of the entire infusion process is realized; by setting the manual adjustment component, it is convenient for manual locking and unlocking; by setting the second motor to drive the cam group to push the pump piece component to extrude the infusion tube, the delivery of the liquid medicine is realized; by setting the blocking pump piece, it is convenient to push the liquid medicine in segments to realize precise control of the infusion volume; by setting the liquid stop clip, it is convenient to clamp the infusion tube to interrupt the infusion after opening the face cover; by setting the air detector and the pressure sensor, it is convenient to detect whether there is air in the infusion tube to ensure the safety of the patient during infusion; through the realization of the automatic locking and unlocking function of the face cover, the usability of the infusion pump is significantly improved, the operation burden of medical staff is greatly reduced, and the operation efficiency is improved. Description of the Drawings

[0027] Attached Figure 1 is a schematic structural diagram of the medical automatic infusion pump of the present utility model;

[0028] Attached Figure 2 is a schematic structural diagram of the medical automatic infusion pump of the present utility model;

[0029] Attached Figure 3 is a schematic structural diagram of the locking mechanism of the present utility model;

[0030] Attached Figure 4 is an exploded structural diagram of the locking mechanism of the present utility model;

[0031] Attached Figure 5 is a cross-sectional view of the locking mechanism of the present utility model;

[0032] Attached Figure 6 is a cross-sectional view of the peristaltic mechanism of the present utility model;

[0033] Identifications in the figure: 1 - main body housing, 110 - extrusion channel; 2 - face cover, 210 - door pin, 220 - pressure tube block, 230 - trigger part; 3 - locking mechanism, 310 - first motor, 320 - transmission assembly, 321 - lead screw, 322 - moving nut, 323 - transmission rod, 330 - latch assembly, 331 - linkage rod, 332 - latch, 3321 - locking hook end, 3322 - movable end, 3323 - rotating end, 340 - manual adjustment assembly, 341 - adjustment rod, 342 - first bevel gear, 343 - second bevel gear, 350 - first coupling, 360 - second coupling; 4 - peristaltic mechanism, 410 - second motor, 420 - rotating shaft, 430 - cam group, 440 - pump vane assembly, 441 - peristaltic pump vane, 442 - blocking pump vane, 4421 - blocking tip, 450 - synchronous pulley, 460 - synchronous belt, 470 - spring; 5 - liquid stop switch; 6 - liquid stop clip; 7 - air detector; 8 - pressure sensor; 9 - infusion tube. Detailed implementation mode

[0034] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0037] In the embodiments of the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] Refer to the attached Figure 1 to the attached Figure 6 , which shows a specific embodiment of a medical automatic infusion pump provided by the present utility model.

[0039] Refer to the attached Figure 1 , the medical automatic infusion pump includes:

[0040] A main body housing 1, on one side of the main body housing 1, there is provided an extrusion channel 110 for installing an infusion tube 9;

[0041] A face cover 2 disposed close to the extrusion channel 110, one end of the face cover 2 is rotatably connected to the main body housing 1, and the other end is provided with a plurality of door pins 210;

[0042] A locking mechanism 3 disposed inside the main body housing 1, the locking mechanism 3 includes a first motor 310, a transmission assembly 320 connected to the first motor 310, and a lock assembly 330 connected to the transmission assembly 320. The lock assembly 330 includes a linkage rod 331 and a plurality of locks 332 connected to the linkage rod 331; when the face cover 2 is closed, the door pins 210 will be close to the locks 332, and the first motor 310 drives the locks 332 to move to hook the door pins 210, so that the face cover 2 is in a locked state;

[0043] A peristaltic mechanism 4 installed inside the main body housing 1 and extending to the extrusion channel 110, for peristaltically extruding the infusion tube 9.

[0044] Refer to the attached Figure 2In the above embodiment, the face cover 2 can be opened and closed relative to the main body housing 1 in a flip-up manner. When in use, the face cover 2 is opened, the infusion tube 9 is installed in the extrusion channel 110, and the face cover 2 is closed. When closing the face cover 2, the first motor 310 drives the transmission assembly 320, and the transmission assembly 320 is connected to the lock assembly 330. Specifically, the first motor 310 drives the linkage rod 331 to move through the transmission assembly 320, so that the lock 332 connected to the linkage rod 331 moves to hook the door pin 210, thereby realizing the automatic locking of the face cover 2. When it is necessary to open the face cover 2, the first motor 310 rotates in the opposite direction, driving the linkage rod 331 to move in the opposite direction to the locking direction, so that the lock 332 is separated from the state of hooking the door pin 210, thereby realizing the automatic unlocking of the face cover 2. During infusion, after the face cover 2 is in the closed and locked state, the peristaltic mechanism 4 peristaltically squeezes the infusion tube 9, thereby realizing the precise control of the entire infusion process.

[0045] See attached Figure 3 and attached Figure 4 In the above embodiment, the transmission assembly 320 includes a screw rod 321 connected to the first motor 310, and a motion nut 322 sleeved on the screw rod 321, and a transmission rod 323 is provided on the motion nut 322 and connected to the linkage rod 331. In the embodiment, when the first motor 310 rotates, the screw rod 321 rotates synchronously, and the motion nut 322 sleeved on the screw rod 321 moves forward and backward along the length direction of the screw rod 321 to drive the transmission rod 323 to move forward and backward, and the linkage rod 331 connected to the transmission rod 323 moves and causes the lock catch 332 to move to hook the locking door pin 210 or unlock the door pin 210.

[0046] See attached Figure 4 and attached Figure 5 In the above embodiment, the locking mechanism 3 further includes a manual adjustment component 340 connected to the screw rod 321, and the manual adjustment component 340 extends outside the main body housing 1, and is used to manually adjust the rotation of the screw rod 321. In the embodiment, the manual adjustment component 340 is used to manually adjust the rotation of the screw rod 321 to manually change the moving state of the motion nut 322, thereby manually operating the locking and unlocking of the lock buckle 332 to avoid affecting the use of the infusion pump due to the failure of the first motor 310 or the transmission component 320.

[0047] See attached Figure 5, in the above embodiment, the manual adjustment component 340 includes an adjustment rod 341, on which a first bevel gear 342 is provided. One end of the lead screw 321 away from the first motor 310 is coaxially connected with a second bevel gear 343, and the first bevel gear 342 meshes with the second bevel gear 343. In the embodiment, the adjustment rod 341 and the lead screw 321 are perpendicular to each other in space. Specifically, when the adjustment rod 341 is rotated, the first bevel gear 342 on the adjustment rod 341 rotates, and the meshing second bevel gear 343 also rotates synchronously. The first bevel gear 342 and the second bevel gear 343 cooperate to convert the rotation axis of the adjustment rod 341 from longitudinal to transverse and connect it to the lead screw 321, so that when the adjustment rod 341 is rotated, the lead screw 321 rotates in the reverse direction to lock and unlock the manual operation latch 332. In the above embodiment, the first motor 310 and the lead screw 321 are connected by a first coupling 350, and the lead screw 321 and the second bevel gear 343 are connected by a second coupling 360.

[0048] Refer to the appendix Figure 3 , in the above embodiment, the latch 332 includes a locking hook end 3321 and a movable end 3322, and a rotating end 3323 located between the locking hook end 3321 and the movable end 3322. The rotating end 3323 is installed on the main body housing 1, the movable end 3322 is connected to the linkage rod 331, and the locking hook end 3321 is used to hook the door latch 210. In the embodiment, the movement direction of the linkage rod 331 is perpendicular to that of the moving nut 322, and an acute angle is formed between the transmission rod 323 and the linkage rod 331. Since the rotating end 3323 of the latch 332 and the main body housing 1 are in a relatively fixed state where they can rotate but not move, and the movable end 3322 of the latch 332 is connected to the linkage rod 331, when the transmission rod 323 moves back and forth, due to the acute angle between the transmission rod 323 and the linkage rod 331, the linkage rod 331 will move left and right, and the locking hook end 3321 at the other end of the latch 332 will also swing left and right. The locking hook end 3321 is laterally arranged, and when it swings left and right, it will hook or disengage from the door latch 210 of the face cover 2.

[0049] Refer to the appendix Figure 6, in the above embodiment, the peristaltic mechanism 4 includes: a second motor 410; a rotating shaft 420 drivingly connected to the second motor 410, on which a cam group 430 is sleeved; a pump vane assembly 440 arranged corresponding to the cam group 430. When the second motor 410 drives the rotating shaft 420 to rotate, the cam group 430 alternately pushes the pump vane assembly 440 to peristaltically squeeze the infusion tube 9; inside the face cover 2, there is a tube pressing block 220 cooperating with the pump vane assembly 440. In the embodiment, synchronous pulleys 450 are provided on both the second motor 410 and the rotating shaft 420, and the two are connected by a synchronous belt 460. When the second motor 410 rotates, the rotating shaft 420 is driven to rotate through the synchronous pulleys 450 and the synchronous belt 460, and the cam group 430 rotates synchronously. The cam group 430 is composed of multiple cams fixed on the rotating shaft 420, and the cams are fixed to the rotating shaft 420 at different angles. When the cams rotate, they drive the pump vane assembly 440 to perform forward and backward telescopic movements, thereby squeezing the infusion tube 9 and pushing the liquid medicine in the infusion tube 9 to flow, achieving the purpose of fine automatic control of infusion.

[0050] Refer to the appendix Figure 6 , in the above embodiment, the pump vane assembly 440 includes multiple peristaltic pump vanes 441 and at least one blocking pump vane 442. At one end of the blocking pump vane 442 close to the infusion tube 9, there is a blocking tip 4421 for segmentally pushing the liquid in the infusion tube 9. In the embodiment, there are a total of 6 peristaltic pump vanes 441 and 2 blocking pump vanes 442 on the pump vane assembly 440. Along the infusion direction of the infusion tube 9, they are in sequence: 2 peristaltic pump vanes 441, 1 blocking pump vane 442, 4 peristaltic pump vanes 441, 1 blocking pump vane 442. In the embodiment, during the infusion process, when the two blocking pump vanes 442 squeeze the infusion tube 9 with their blocking tips 4421 to block the liquid, the remaining peristaltic pump vanes 441 continue to peristalsis according to a preset rule, and by segmentally pushing the liquid medicine in the infusion tube 9, the purpose of fine control of the infusion volume is achieved. In the embodiment, at the tail of the blocking pump vane 442, that is, at the end far from the blocking tip 4421, there is a spring, and on the rotating shaft 420, there is also a rotational speed sensing vane for monitoring the infusion volume.

[0051] Refer to the appendix Figure 1 , in the above embodiment, near the extrusion channel 110 of the main body housing 1, there are a liquid stop switch 5 and a liquid stop clip 6. Inside the face cover 2, there is a trigger part 230 cooperating with the liquid stop switch 5. When the face cover 2 is unlocked and opened, the trigger part 230 moves away from the liquid stop switch 5, and the liquid stop clip 6 will clamp the infusion tube 9. In the embodiment, when the face cover 2 is in the closed state, the trigger part 230 presses against the liquid stop switch 5, and the liquid stop clip 6 is in the open state, and the liquid medicine can flow normally in the infusion tube 9; when the face cover 2 is in the open state, the liquid stop clip 6 clamps the infusion tube 9 to prevent the liquid medicine from flowing, ensuring the safety of patient use.

[0052] Refer to the appendix Figure 2, in the above embodiment, an air detector 7 and a pressure sensor 8 are provided in the extrusion channel 110. In the embodiment, it is used to detect whether there is air in the infusion tube 9 located in the extrusion channel 110. When air is detected, the infusion pump stops working and issues an alarm to ensure the safety of patients during use.

[0053] In summary, the present embodiment provides a medical automatic infusion pump. Through the cooperation of the locking mechanism 3 and the door pin 210 of the face cover 2, the first motor 310 drives the movement of the transmission assembly 320 and the lock catch assembly 330 to achieve automatic locking and unlocking of the face cover 2; by setting the peristaltic mechanism 4 to peristaltically extrude the infusion tube 9, precise control of the entire infusion process is achieved; by setting the manual adjustment component 340, it is convenient for manual locking and unlocking; by setting the second motor 410 to drive the cam group 430 to push the pump piece assembly 440 to extrude the infusion tube 9, the delivery of the medicinal liquid is achieved; by setting the blocking pump piece 442, it is convenient to push the medicinal liquid in sections to achieve precise control of the infusion volume; by setting the liquid stop clip 6, it is convenient to clamp the infusion tube 9 to interrupt the infusion after the face cover 2 is opened; by setting the air detector 7 and the pressure sensor 8, it is convenient to detect whether there is air in the infusion tube 9 to ensure the safety of patient infusion; through the realization of the automatic locking and unlocking function of the face cover 2 in this embodiment, the usability of the infusion pump is significantly improved, the operation burden of medical staff is greatly reduced, and the operation efficiency is improved.

[0054] The above-described embodiment is only one of the more preferred specific embodiments of the present invention. Ordinary changes and substitutions made by technicians in the field within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A medical automatic infusion pump, characterized in that: include: A main body housing (1), wherein one side of the main body housing (1) is provided with an extrusion channel (110) for installing an infusion tube (9); A surface cover (2) disposed near the extrusion channel (110), wherein one end of the surface cover (2) is rotatably connected to the main body housing (1), and the other end is provided with a plurality of door pins (210); a locking mechanism (3) disposed in the main body housing (1), the locking mechanism (3) comprising a first motor (310), a transmission assembly (320) connected to the first motor (310), and a lock assembly (330) connected to the transmission assembly (320), the lock assembly (330) comprising a linkage rod (331) and a plurality of locks (332) connected to the linkage rod (331); when the cover (2) is closed, the door pin (210) will approach the lock (332), and the first motor (310) drives the lock (332) to move so as to hook the door pin (210), so that the cover (2) is in a locked state; A peristaltic mechanism (4) installed in the main body housing (1) and extending to the extrusion channel (110) is used for peristaltic extrusion of the infusion tube (9).

2. A medical automatic infusion pump according to claim 1, characterized in that: The transmission assembly (320) comprises a lead screw (321) connected to the first motor (310), and a motion nut (322) sleeved on the lead screw (321); the motion nut (322) is provided with a transmission rod (323) connected to the linkage rod (331).

3. A medical automatic infusion pump according to claim 2, characterized in that: The locking mechanism (3) further comprises a manual adjustment component (340) connected to the screw rod (321); the manual adjustment component (340) extends outside the main body housing (1) and is used for manually adjusting the rotation of the screw rod (321).

4. A medical automatic infusion pump according to claim 3, characterized in that: The manual adjustment assembly (340) comprises an adjustment rod (341), a first bevel gear (342) being provided on the adjustment rod (341), a second bevel gear (343) being coaxially connected to one end of the lead screw (321) away from the first motor (310), and the first bevel gear (342) meshing with the second bevel gear (343).

5. A medical automatic infusion pump according to claim 4, characterized in that: The first motor (310) and the screw rod (321) are connected via a first coupling (350), and the screw rod (321) and the second bevel gear (343) are connected via a second coupling (360).

6. A medical automatic infusion pump according to any one of claims 1 to 5, characterized in that: The lock catch (332) comprises a lock hook end (3321) and a movable end (3322), and a rotating end (3323) located between the lock hook end (3321) and the movable end (3322), wherein the rotating end (3323) is mounted on the main body housing (1), the movable end (3322) is connected to the linkage rod (331), and the lock hook end (3321) is used to hook the door pin (210).

7. A medical automatic infusion pump according to any one of claims 1 to 5, characterized in that: The peristaltic mechanism (4) comprises: A second motor (410); a rotating shaft (420) drivingly connected to the second motor (410), wherein a cam assembly (430) is sleeved on the rotating shaft (420); A pump sheet assembly (440) is arranged corresponding to the cam assembly (430), and when the second motor (410) drives the rotating shaft (420) to rotate, the cam assembly (430) alternately pushes the pump sheet assembly (440) to peristaltically squeeze the infusion tube (9); A tube pressing block (220) that cooperates with the pump sheet assembly (440) is provided on the inner side of the surface cover (2).

8. The medical automatic infusion pump according to claim 7, characterized in that: The pump sheet assembly (440) comprises a plurality of peristaltic pump sheets (441) and at least one blocking pump sheet (442); an end of the blocking pump sheet (442) close to the infusion tube (9) is provided with a blocking tip (4421) for pushing the liquid in the infusion tube (9) in sections.

9. A medical automatic infusion pump according to any one of claims 1 to 5, characterized in that: The main body housing (1) is provided with a liquid stop switch (5) and a liquid stop clamp (6) near the extrusion channel (110); the inner side of the surface cover (2) is provided with a trigger portion (230) that cooperates with the liquid stop switch (5); when the surface cover (2) is unlocked and opened, the trigger portion (230) moves away from the liquid stop switch (5), and the liquid stop clamp (6) clamps the infusion tube (9).

10. A medical automatic infusion pump according to any one of claims 1 to 5, characterized in that: An air detector (7) and a pressure sensor (8) are provided in the extrusion channel (110).

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