CN211485982U - Infusion pump - Google Patents

Abstract

An infusion pump, the pump body, the said pump body has mounting structures, in order to mount the transfusion system; the pump door is movably arranged on the pump body and used for shielding or opening an infusion apparatus arranged on the pump body, the pump door comprises a door body and a screen assembly fixed on the door body, and the screen assembly is provided with an outer panel, a display screen and a touch screen; the entity button, the entity button includes key switch and key cap. The screen assembly adopts a touch display screen, and a touch area can also be used as the display screen, so that the display area is enlarged, and more information can be displayed. Meanwhile, an entity key is further arranged, and a user can control some basic functions of the infusion pump through the entity key and the touch screen, such as startup and shutdown, emergency stop and the like. Moreover, the physical keys and the screen component are respectively connected with the processor through different interfaces.

Description

Infusion pump

Technical Field

The application relates to a medical instrument, in particular to a key structure of an infusion pump.

Background

Generally, syringe pumps and infusion pumps are used in clinical settings, for example in a stacked arrangement. Some high-end infusion pumps (syringe pumps and infusion pumps) are provided with a display screen on the front side of the infusion pump so as to display more information, while the entity keys of the common syringe pumps and infusion pumps are separated from the display screen and are independently arranged, and the area of the display screen is not large due to the fact that the entity keys occupy a certain space, and more information is difficult to display. Moreover, these physical keys are the only instruction input devices, and once a fault occurs, a medical accident is easily caused.

Disclosure of Invention

The present application provides an infusion pump comprising:

the pump body is provided with a mounting structure and is used for mounting an infusion apparatus;

the pump door is movably arranged on the pump body and used for shielding or opening an infusion apparatus arranged on the pump body, the pump door comprises a door body and a screen assembly fixed on the door body, and the screen assembly is provided with an outer panel, a display screen and a touch screen; the solid key comprises a key switch and a key cap, the door body and/or the outer panel are/is provided with a key hole, the key cap is arranged in the key hole, and the key cap and the key switch can be movably contacted or disconnected according to the pressure on the key cap;

the processor is connected with the screen assembly through a first interface and used for receiving the touch signal of the screen assembly and outputting visual information through the screen assembly; the processor is connected with the key switch through a second interface and receives an output signal of the key switch;

and the driving device is used for applying pressure to the infusion set under the driving of the processor so as to enable the liquid medicine in the infusion set to flow to the patient.

According to the infusion pump shown in the embodiment, the screen assembly adopts the touch display screen, and the touch area can also be used as the display screen, so that the display area is enlarged, and more information can be displayed. Meanwhile, an entity key is additionally arranged, and a user can control some basic functions of the infusion pump through the entity key and the touch screen, such as startup and shutdown, emergency stop and the like. Moreover, the entity button and the screen component are respectively connected with the processor by adopting different interfaces, and when the signal transmission between any one of the entity button and the screen component and the processor fails, the infusion pump can be controlled by the other one, so that the safety of the control of the infusion pump is improved.

Drawings

FIG. 1 is a schematic diagram of a syringe pump (with the pump door closed) according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a syringe pump (with the pump door open) according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram illustrating a signal connection between a screen assembly and physical keys and a processor according to an embodiment of the present application;

FIG. 4 is an exploded view of a screen assembly and a door frame according to one embodiment of the present application;

FIG. 5 is an exploded view of a key cap and supporting skeleton of a physical key according to an embodiment of the present application;

FIG. 6 is a cross-sectional view of a physical key in accordance with an embodiment of the present application;

FIG. 7 is a schematic diagram of a screen mounting area according to an embodiment of the present application;

FIG. 8 is a cross-sectional view of the screen assembly as mounted to a door body according to one embodiment of the present application;

FIG. 9 is an enlarged view of the portion of the screen assembly shown in cross-section in FIG. 8 where one end of the screen assembly engages the door;

FIG. 10 is a schematic diagram of an infusion pump (with the pump door closed) according to an embodiment of the present application;

fig. 11 is a schematic diagram of an infusion pump (with the pump door open) according to an embodiment of the present application.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

Clinically, infusion pump products are generally used in intravenous infusion environments where a constant administration speed and an accurate administration amount need to be maintained for a long time, and are mostly used for infusing cardiovascular active drugs, anesthetics and hormones which are small in liquid amount, high in concentration and need to be accurately controlled, such as dopamine, dobutamine, epinephrine, norepinephrine, lidocaine, nitroglycerin, sodium nitroprusside and the like. Other fluids may also be injected as clinically needed.

The present embodiment provides an infusion pump, which is used in combination with an infusion apparatus, wherein the infusion pump may include an injection pump and/or an infusion pump, and the infusion apparatus corresponds to a syringe from the perspective of the injection pump; the infusion apparatus is corresponding to the infusion tube from the angle of the infusion pump. The following is set forth from the perspective of a syringe pump and an infusion pump, respectively.

In one embodiment, referring to fig. 1 and 2, a syringe pump 100 includes a pump body 110, a driving device, a control unit, a physical button 120, and a pump door 130. Wherein the driving device and the control unit are not shown in the figure. Of course, the syringe pump 100 may also include other components, such as a motor drive system, a memory system, a sensory monitoring system, and an alarm system, which are not further detailed herein.

The pump body 110 has mounting structure 111 for mounting the syringe 300, such as by clamping structure to hold the barrel of the syringe 300 in place. The mounting structure 111 includes, but is not limited to, a clamping structure, a magnetic attraction structure, a snap structure, a tight fit structure, and the like. The driving device is used for driving the piston rod of the injector 300 to move so as to inject liquid. Such as by pushing the plunger rod of syringe 300 through ram 141 as shown. Wherein the driving device may generally adopt a motor as a power member, the motor converts the selective motion into a linear motion via a transmission mechanism (such as a lead screw nut transmission mechanism), thereby pushing a piston rod of the syringe 300 to move and squeezing the liquid in the syringe 300. In terms of the working principle, the injection action of the injection pump 100 is that the single chip microcomputer system sends out control pulses to rotate the motor through the driving circuit, the motor drives the screw rod and the nut through the speed reducing mechanism to convert the rotation motion of the motor into the linear motion of the nut, and the nut is connected with the push rod 141 of the matched injector 300, so that the piston of the matched injector 300 can be pushed to perform injection and transfusion. By setting the rotational speed of the motor, the speed at which it advances the mating syringe 300 can be adjusted, thereby adjusting the dosage and rate of medication administered. Of course, the driving device may be a power unit capable of outputting linear motion, such as an air cylinder, in addition to the motor.

The control unit is used for controlling the driving device. The control unit may include a processor and a peripheral interface. The processor may be used to send instructions to the drive. The peripheral device interface can be connected with peripheral devices such as the entity key 120 and the like for signal transmission, so that the processor can control the driving device according to the desire of a user.

The control unit is electrically connected to the physical keys 120 for the user to input commands. The entity key 120 includes at least one of a power key, an emergency stop key, a main menu key, a screen unlock key and a pump door unlock key. The physical keys 120 may control the processor through a bus and peripheral interfaces.

The specific power supply key is used for being connected with the control unit, and the control unit is driven to send a control signal to the power supply system by pressing the power supply key so as to realize power supply and power off of the injection pump. The specific emergency stop key is used for being connected with the control unit, and the control unit is driven to send a control signal to the driving device by pressing the emergency stop key so as to realize the movement or stop of the driving device of the injection pump. The specific main menu key is used for being connected with the control unit, and the control unit is driven to send a control signal to the display screen control chip by pressing the main menu key, so that an infusion main interface is displayed on the display screen. The specific screen unlocking key is used for being connected with the control unit, and the control unit is driven by the screen unlocking key to send a control signal to the touch screen control chip, so that a preset touch function or a preset touch area is opened/closed on the touch screen. The pump door unlocking key is used for being connected with the control unit, and the pump door unlocking key is pressed to drive the control unit to send a control signal to the pump door switching mechanism so as to open or close the pump door.

The pump door 130 is movably mounted on the pump body 110 to cover and/or uncover the syringe 300 mounted on the pump body 110 to prevent foreign objects from contacting the syringe 100 during operation and affecting the injection operation. Referring to fig. 1 and 2, the door 130 is rotatably mounted to the pump body 110, and the rotatable mounting is achieved by a hinge. In addition, the pump door 130 may be mounted in other movable manners, such as sliding or folding. When the pump door 130 is opened in a foldable manner, at least one of the through window 133 and the screen assembly 132 may also be provided in a foldable manner, if necessary.

Referring to fig. 2, the mounting structure 111 may be, but is not limited to, a clamping mechanism, and the mounting structure 111 is located at the inner side of the pump door 130 and is triggered by the pump door 130 to fix the syringe 300 when the pump door 130 is closed.

The clamping mechanism as the mounting structure 111 includes a clamping block 1111 and an elastic member (spring, elastic sheet, etc.) for driving the clamping block 1111 to move in a direction for releasing the syringe 300. The holding block 1111 is movably mounted on the pump body 110 and has a syringe placement position for placing the syringe 300 thereon. The clamping block 1111 is located inside the pump door 130 and is located on a moving path when the pump door 130 is closed. When the pump door 130 is closed, the pump door 130 pushes the clamping mechanism to clamp the syringe 300, preventing it from moving. When the pump door 130 is opened, the clamping mechanism is reset without the support of the pump door 130, releasing the syringe 300 for the user to access the syringe 300.

The pump door 130 includes a door body 131, a transparent window 133 (which may be omitted), and a screen assembly 132. The screen component 132 is connected to a control unit (specifically, a processor) so as to be controlled by the control unit to display specified information, and meanwhile, to input instructions and information to the control unit in a touch manner. The screen element 132 has a display area 1321 capable of displaying information, wherein at least a part of the display area 1321 has a touch function, i.e. at least a part of the area of the screen element 132 is a touch display screen, which can be connected to a control unit, and can both display information and receive a touch instruction of a user. The non-touch area of the display area 1321 may be used only for displaying, and may be a common display screen.

At least part of the display area 1321 of the screen component 132 has a touch function, so that some entity buttons 120 for inputting instructions can be omitted, for example, only important power controls, emergency stop controls, and the like are reserved, so that the display area 1321 can be ensured to be larger, more information can be displayed, and the user can conveniently check the information.

Referring to fig. 3, 4 and 5, the screen assembly 132 employs a touch display screen, which includes an outer panel 1322, a touch screen 1323 and a display screen 1324. The display 1324 and the touch screen 1323 have corresponding control chips (there are multiple control chips), and the control chips are connected to the processor 500 to control the display 1324 and the touch screen 1323, and the specific control process is not described in detail herein. The outer panel 1322 has a transparent area 1322a and an opaque area 1322b disposed around the transparent area 1322a, the touch panel 1323 and the display panel 1324 are disposed on the back surface of the transparent area 1322a in a stacked manner, and the display area 1321 of the display panel 1324 is visually exposed from the transparent area 1322 a.

Referring to fig. 1-2, in some embodiments, the physical button 120 is disposed on the front surface of the pump door 130 and is integrated with the screen assembly 132. The physical keys 120 integrated with the screen component 132 may be disposed above, below, or on the side of the screen component 132.

Of course, the physical key 120 may be disposed on the pump door 130, or may be disposed elsewhere, such as on the pump body 110. The physical button 120 on the pump door 130 may be disposed on the screen assembly 132, or may be disposed at other positions of the pump door 130.

Regardless of the location of the physical keys 120, the processor 500 is connected to the screen assembly 132 through the first interface for receiving the touch signal of the screen assembly 132 and outputting the visual information through the screen assembly 132. Meanwhile, the processor 500 is connected to the key switch through the second interface and receives an output signal of the key switch.

The user can control some basic functions of the syringe pump and the infusion pump, such as turning on and off, emergency stop, etc., through the physical keys 120 and the touch screen 1323. Moreover, the physical keys 120 and the screen assembly 132 are connected to the processor 500 by different interfaces, respectively, and the physical keys 120 can be used as auxiliary tools, so that even if the signal transmission between the screen assembly 132 and the processor 500 fails, the syringe pump and the infusion pump can be stopped and shut down in time through the physical keys 120.

Referring to fig. 3, in one embodiment, the first interface of the processor 500 outputs a touch screen driving signal for driving the touch screen 1323 and display screen image information (RGB signal) for outputting the image information to the display screen 1324.

In one embodiment, the first interface further outputs a display backlight driving signal (pwm) signal, the pwm signal is used to drive the display 1324 backlight, and the adjustment of the display 1324 backlight can be realized; in one embodiment, the processor may implement different backlighting for the display 1324 during standby or on periods, or also for the display 1324 at night or during the day.

In one embodiment, the second interface is an input/output interface (IO interface), which is connected to the key switch for receiving the output signal sent by the key switch 126.

Further, referring to fig. 4-6, in one embodiment, some or all of the physical keys 120 are disposed on the screen assembly 132. Specifically, the physical keys 120 are mounted on the outer panel 1322 of the screen assembly 132, such as key holes 1322b-5 disposed in the opaque region 1322 b. The physical key 120 includes a key switch 126 connected to the control unit, a key cap 124 covering the key switch 126, and a supporting frame 125 supported inside the key cap 124. The key switch 126 is located on the inside of the outer panel 1322. Keycap 124 extends partially from the inside of outer panel 1322 through key hole 1322b-5 for depression by a user. The keycap and the key switch can be movably contacted or disconnected according to the pressure on the keycap. The support skeleton 125 secures the key cap 124 within the key hole 1322 b-5. The keycap 124 is in sealing fit with the opening wall of the key hole 1322b-5, and the waterproof and dustproof effects are achieved.

In one embodiment, referring to fig. 6, one end of the supporting frame 125 abuts against the frame 1311 of the door 131, and the other end abuts against the key cap 124, so that the key cap 124 is in a suspended state. The support frame 125 is configured for easy assembly and easy manufacture, and can be used to conveniently secure the keycap 124 to the outer panel 1322 of the screen assembly 132.

Of course, in some embodiments, the supporting frame 125 can be omitted, and the keycap 124 can be directly fixedly connected to the outer panel 1322 or the door 131 (e.g., the frame 1311 or the supporting beam 1312) by other means, such as welding, clamping or other fixing means, so as to be fixed in the opening wall of the key hole 1322 b-5.

Further, referring to fig. 4-6, the key cap 124 has a pressing portion 1241 and a mounting portion 1243 bent from the outer periphery of the pressing portion 1241, the mounting portion 1243 is located between the door 131 and the screen assembly 132, and can be clamped by the door 131 (specifically, the middle portion of the frame 1311) and the screen assembly 132 (specifically, the outer panel 1322), so as to prevent the key cap 124 from being displaced. Of course, the key cap 124 may be in a relaxed state between the door 131 (specifically, the frame 1311) and the screen assembly 132 (specifically, the outer panel 1322). One surface of the pressing portion 1241 facing the key switch 126 is provided with a convex abutting block 1242, the abutting block 1242 can be separated from the key switch 126 or transmitted without force under normal conditions, and when the key cap 124 is pressed down, the abutting block 1242 can abut against the key switch 126 to trigger the key switch 126.

The key cap 124 can be made of elastic materials, preferably elastic flexible materials, so as to improve the pressing hand feeling. In one embodiment, the supporting framework 125 tightly supports the inner wall of the key cap 124, so that the key cap 124 is tightly fitted to the opening wall of the key hole 1322b-5 to achieve a sealed connection. Of course, in some embodiments, the keycap 124 and the outer panel 1322 can be hermetically connected by a sealing member and/or an adhesive.

The design can integrate the entity key 120 with the screen component 132 or the outer cover, particularly, the entity key 120 is integrated on the screen component 132 under the condition of not damaging the screen, so that the hand feeling of the entity key 120 is met on the basis of ensuring that the screen effect is not influenced, liquid can be prevented from entering the screen, the screen is convenient to clean, and the requirement of frequently disinfecting and cleaning medical instruments is met. In addition, because existing infusion pumps and/or syringe pumps are often used in multiple pieces, and because of space constraints, it is common to place the infusion pump and/or syringe pump in multiple stacks, or even multiple stacks, in a mounting rack; in this regard, the infusion pump and/or the syringe pump are typically exposed only on the front side. In the scheme, the entity keys 120 and the screen component 132 are integrated into a whole and are arranged on the front surface of the infusion pump, so that the pressing operation of a user can be facilitated, and particularly, medical personnel can conveniently operate the keys of the infusion pump on the front surface of the infusion pump under the medical emergency condition.

In one embodiment, the shortest distance from the transparent area 1322a of the outer panel 1322 to the wall of the key hole 1322b-5 is 2-4mm, so that the area of the transparent area 1322a can be enlarged as much as possible without changing the size of the outer panel 1322, so as to expose more display areas of the display 1324.

In one embodiment, the outer surface of the pressing portion 1241 of the key cap 124 is flush with the outer surface of the outer panel 1322, so that the outer surface of the screen assembly 132 maintains a good flatness, and the screen assembly 132 and the solid keys 120 are integrally formed as a single plane, which is simple and elegant, and is also convenient for cleaning. In another embodiment, the outer surface of the pressing portion 1241 of the key cap 124 protrudes from the outer surface of the outer panel 1322, so that the user can press the key conveniently. Of course, the outer surface of the pressing portion 1241 of the key cap 124 may be recessed in the outer surface of the outer panel 1322.

Of course, the syringe pump 100 shown in fig. 1 and 2 is merely exemplary, and in other embodiments, the screen assembly 132 and the physical keys 120 may be disposed on the pump body 110. Alternatively, in some embodiments, the syringe pump 100 may not have the pump door 130, and the entire syringe pump 100 is a unitary structure similar to the pump body 110, and the screen assembly 132 and the physical keys 120 may be disposed on the unitary structure.

Further, referring to fig. 4, 7 to 9, in an embodiment, the door 131 has a screen mounting area 1313, and the screen mounting area 1313 is a mounting cavity matched with the shape of the screen assembly 132. Specifically, in one embodiment, the door 131 has a frame 1311 and a support beam 1312 disposed on the frame 1311, the support beam 1312 divides the frame 1311 into a window installation region (a position where the window 133 is installed) and a screen installation region 1313, the window 133 is fixed in the window installation region, and the screen assembly 132 is fixed in the screen installation region 1313.

Referring to fig. 9, the side wall of the mounting cavity has a ring of supports 1314 for supporting the screen assembly 132. The supporting platform 1314 is provided with a glue dispensing slot 1315 for accommodating glue solution. The dispensing slot 1315 is provided with a circle inside the mounting cavity.

The outer panel 1322, the touch panel 1323, and the display 1324 are stacked in this order. The periphery of the outer panel 1322 protrudes from the touch screen 1323, and the periphery of the touch screen 1323 may also slightly protrude from the display screen 1324. The protruding portion of the outer panel 1322 is placed on the support 1314, and the outer panel 1322 is adhered to the door 131 by the glue solution in the glue dispensing slot 1315. The bonding method can fix the screen assembly 132 to the door 131. Wherein, better, this glue solution can adopt the thermal reaction to glue, and this thermal reaction glues the back and forms elasticity flexible glue that solidifies, under the condition that satisfies the fixed demand to screen subassembly 132, plays buffering guard action and waterproof function to screen subassembly 132. Moreover, the thermal reaction adhesive is not easy to corrode, and can meet the higher requirements of cleaning and disinfection in medical equipment.

Further, referring to fig. 7, in order to make the glue solution more uniformly distributed in the glue dispensing slot 1315, in an embodiment, a slot wall of one side of the glue dispensing slot 1315 has a plurality of protrusions 1316, the protrusions 1316 divide the glue dispensing slot 1315 into a plurality of glue dispensing grids 1317, and the glue dispensing grids 1317 are communicated with each other so as to facilitate the flow of the glue solution. The dispensing grid 1317 can contain the glue therein to avoid uneven distribution of the glue in each part of the dispensing slot 1315. The glue solution is uniformly distributed at each position of the glue dispensing groove 1315, so that the thickness of the glue solution after the screen is pasted can be accurately controlled, the requirement of bonding is met, and the problem of reliability caused by deformation of the door body part is solved. Particularly, the adhesive structure can meet the adhesive requirement of an extremely narrow frame, for example, the size of the outer panel 1322 protruding out of the touch screen 1323 is 1-2mm, which is difficult to realize by adopting a common adhesive structure, but the adhesive structure is feasible.

The protruding portion 1316 does not directly partition the dispensing slot 1315, but reserves a part of gap for the dispensing grids 1317 to communicate with each other, so that the glue solution can flow in a self-adaptive manner during dispensing, and the dispensing efficiency is improved.

In some embodiments, the lengths of the glue dispensing grids 1317 located at the corners are greater than those of the glue dispensing grids 1317 located at other non-corners, so that the glue dispensing grids 1317 located at the corners can accommodate more glue solutions, and the lengths of the glue dispensing grids 1317 located at the non-corners are equal, so that the glue solutions in the glue dispensing grids 1317 are substantially the same.

Further, referring to fig. 8 and 9, in one embodiment, the peripheral protruding sidewalls of the outer panel 1322 are located above the supporting platform 1314 and enclose the supporting platform 1314 and the sidewalls of the mounting chamber with a first adhesive region a. Furthermore, the display 1324 is located at the side of the support 1314, and the protruding portion around the touch screen 1323 and the sidewall of the display 1324 and the sidewall of the support 1314 enclose a second adhesive region b.

When the glue solution distribution dispensing slot 1315, the glue dispensing slot 1315 and the support 1314 will deform after press-bonding, so that the redundant glue solution automatically overflows into the first gluing area a and the second gluing area b, the gluing area is increased, the bonding strength is increased, and the requirement of periphery waterproofing is met.

In order to further prevent water from entering the door 131 from the gap between the screen assembly 132 and the side wall of the installation cavity, in one embodiment, a water guiding groove is formed in the door 131, the gap between the screen assembly 132 and the side wall of the installation cavity is communicated with the water guiding groove, and the water guiding groove extends to the outside of the door 131 to guide out the water in the gap. The outlet of the water chute may be disposed at the bottom of the door 131, so as to guide the water out of the bottom of the door 131.

Besides the above-mentioned adhesive sealing fit, the screen assembly 132 and the door 131 can also be full-screen by soft glue interference around the screen assembly 132.

On the other hand, based on the above inventive concept, an embodiment of the present application further provides an infusion pump. Unlike the syringe pump 100, the infusion pump drives the infusion tube to perform infusion for a set time and flow rate.

In one embodiment, referring to fig. 10 and 11, the infusion pump 200 includes a pump body 210, a drive device, a control unit, physical keys 220, and a pump door 230. Wherein the driving device and the control unit are not shown in the figure.

The pump body 210 has a placement position 211 for placing the infusion tube, and also has a liquid stopping structure (not shown) for installing the infusion tube and cutting the infusion tube at a non-working stage, for example, a liquid stopping clip for placing a large amount of liquid in the infusion tube into the human body. Under the normal transfusion state, the liquid in the transfusion tube can freely flow. When the pump door 230 is opened, the liquid stop clamp clamps the infusion tube to stop the flow of liquid. The liquid stopping structure is linked with the pump door 230, the cut-off state of the liquid stopping structure to the infusion tube is controlled by the movement of the pump door 230, for example, the liquid stopping structure is driven to cut off the infusion tube when the pump door 230 is opened, the liquid stopping structure can release the infusion tube when the pump door 230 is closed, the infusion tube can still be in the state of cutting off the infusion tube, and the timing of cutting off the infusion tube by the liquid stopping structure is controlled by the control unit. The liquid stopping structure includes but is not limited to a clamping structure such as a liquid stopping clamp. The driving device is used for liquid flowing in the infusion tube. Wherein, the driving device can adopt a peristaltic pump or other devices which can drive the liquid in the transfusion tube to move. The peristaltic pump may include a motor and corresponding peristaltic mechanism.

The control unit is used for controlling the driving device. The control unit may include a processor and a peripheral interface. The processor may be used to send instructions to the drive. The peripheral device interface can be connected with peripheral devices such as the entity key 220 and the like for signal transmission, so that the processor can control the driving device according to the wishes of a user.

The control unit is electrically connected to physical keys 220 for a user to input commands. The entity key 120 includes at least one of a power key, an emergency stop key, a main menu key, and a pump door unlock key. The physical keys 220 may control the processor through a bus and peripheral interfaces.

Generally, a user sets the flow rate and volume of medicine and liquid required by a patient according to a medical order through a human-computer interface of the infusion pump 200, an infusion set which can be matched for use is selected according to the brand and specification of the infusion set indicated by the infusion pump 200, and a control system of the infusion pump 200 automatically converts the operation parameters of a driving motor according to preset infusion set characteristic parameters and flow data. The driving motor drives the cam shaft of the peristaltic mechanism to rotate through the speed reducing mechanism, the cam shaft rotates to drive a group of pump blades to do linear reciprocating motion, the pump blade group and the extrusion plate are matched to extrude and release the outer wall of the infusion apparatus in a reciprocating mode in sequence, and liquid in the infusion apparatus is driven to flow continuously and directionally, so that the purpose of constant-speed and quantitative infusion is achieved.

The pump door 230 is movably mounted on the pump body 210 to cover and uncover the infusion tube mounted on the pump body 210, so as to prevent the infusion pump 200 from being touched by foreign objects during operation and affecting the injection operation. Referring to fig. 10 and 11, the door 230 is rotatably mounted to the pump body 210, and this rotation is achieved by a hinge. In addition, the pump door 230 may be mounted in other movable manners, such as sliding or folding. When the pump door 230 is opened in a foldable manner, the screen assembly 232 may also be provided in a foldable manner, if desired.

The pump door 230 includes a door body 231 and a screen assembly 232. The screen component 232 is connected to the control unit (specifically, a processor) so as to be controlled by the control unit to display specified information, and meanwhile, can input instructions and information to the control unit in a touch manner. The screen element 232 has a display area 2321 capable of displaying information, wherein at least a part of the display area 2321 has a touch function, that is, at least a part of the area of the screen element 232 is a touch display screen, which can be connected to a control unit, and can both display information and receive a touch instruction of a user. The non-touch area of the display area 2321 may be used for display only, and a common display screen may be adopted.

At least part of the display area 2321 of the screen component 232 has a touch function, so that some entity keys 220 for instruction input can be omitted, for example, only important power supply controls and emergency stop controls are reserved, and thus, the display area 2321 can be ensured to be larger, more information can be displayed, and the user can conveniently check the information.

Similarly, the infusion pump 200 also needs to have some physical keys 220, and the physical keys 220 may be an emergency stop key, a door unlock key, a menu key (main menu key), etc. in addition to the power key. These physical keys 220 may be provided on the pump door 230 or on the pump body 210. The specific power key is used for being connected with the control unit, and the control unit is driven to send a control signal to the power system by pressing the power key so as to realize power supply and power failure of the infusion pump. The specific emergency stop key is used for being connected with the control unit, and the control unit is driven to send a control signal to the driving device by pressing the emergency stop key so as to realize the movement or stop of the driving device of the infusion pump. The specific main menu key is used for being connected with the control unit, and the control unit is driven to send a control signal to the display screen control chip by pressing the main menu key, so that an infusion main interface is displayed on the display screen. The specific screen unlocking key is used for being connected with the control unit, and the control unit is driven by the screen unlocking key to send a control signal to the touch screen control chip, so that a preset touch function or a preset touch area is opened/closed on the touch screen. The pump door unlocking key is used for being connected with the control unit, and the pump door unlocking key is pressed to drive the control unit to send a control signal to the pump door switching mechanism so as to open or close the pump door.

Referring to fig. 10, in some embodiments, the physical button 220 is disposed on the front surface of the pump door 230 and is integrated with the screen assembly 232. The physical keys 220 integrated with the screen assembly 232 may also be disposed above, below, or to the side of the screen assembly 232. Specifically, the physical keys 220 are mounted on an outer panel 1322 of the screen assembly 232.

In the present infusion pump 200, the screen unit 232 and the physical keys 220 can be connected to the processor 500 in the manner shown in fig. 3 (in conjunction with the above description), to achieve the same technical effect.

The solid key 220 structure of the infusion pump 200 adopts the structure of the solid key 120 (see the above description for the specific structure) as shown in fig. 4-6, and the structure can solve the problem that the solid key 220 is difficult to be made on glass, and can meet the hand feeling of the solid key 220, prevent liquid from entering and facilitate cleaning on the basis of ensuring that the pure screen effect is not influenced, thereby meeting the requirement of disinfection of a cleaning disinfectant in the existing market.

Of course, the sealing arrangement of the screen assembly 232 on the pump door 130230 can also be referred to as described above (as shown in FIGS. 7-9) to achieve a sealing effect, particularly with the outer panel 1322 projecting beyond the touch screen 1323 by 1-2 mm.

Of course, the infusion pump 200 shown in fig. 10 and 11 is merely exemplary, and in other embodiments, the screen assembly 232 and the physical keys 220 may be disposed on the pump body 210. Alternatively, in some embodiments, the infusion pump 200 may not have the pump door 230, and the entire infusion pump 200 may be a unitary structure similar to the pump body 210, in which case the screen assembly 232 and the physical keys 220 may also be disposed on the unitary structure.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.

Claims (17)

1. An infusion pump, comprising:

the pump body is provided with a mounting structure and is used for mounting an infusion apparatus;

the pump door is movably arranged on the pump body and used for shielding or opening an infusion apparatus arranged on the pump body, the pump door comprises a door body and a screen assembly fixed on the door body, and the screen assembly is provided with an outer panel, a display screen and a touch screen;

the solid key comprises a key switch and a key cap, the door body and/or the outer panel are/is provided with a key hole, the key cap is arranged in the key hole, and the key cap and the key switch can be movably contacted or disconnected according to the pressure on the key cap;

the processor is connected with the screen assembly through a first interface and used for receiving the touch signal of the screen assembly and outputting visual information through the screen assembly; the processor is connected with the key switch through a second interface and receives an output signal of the key switch;

and the driving device is used for applying pressure to the infusion set under the driving of the processor so as to enable the liquid medicine in the infusion set to flow to the patient.

2. The infusion pump of claim 1, wherein the first interface is configured to output a touch screen drive signal and display screen image information, the touch screen drive signal configured to control a touch screen.

3. The infusion pump of claim 2, wherein the first interface is further configured to output a display screen backlight drive signal, the display screen backlight drive signal to control the display screen backlight.

4. The infusion pump of claim 1, wherein the physical keys comprise a power key and an emergency stop key; the screen assembly includes controls for an emergency stop function.

5. The infusion pump of claim 1, wherein the physical key further comprises a supporting skeleton, the key cap is located outside of the key switch, and a portion of the key cap protrudes from the key hole for depression by a user; the supporting framework fixes the keycap in the key hole, and the keycap is matched with the opening wall of the key hole in a sealing manner.

6. The infusion pump of claim 5, wherein the key cap has a pressing portion and a mounting portion bent from the outer periphery of the pressing portion, the mounting portion is sandwiched between the supporting frame and the outer panel, and a side of the pressing portion facing the key switch has a protruding abutting block for abutting against the key switch when the pressing portion is pressed down.

7. The infusion pump of claim 6, wherein the supporting framework tightly supports the inner wall of the key cap, so that the key cap is tightly matched with the opening wall of the key hole to realize the sealing connection.

8. The infusion pump of claim 6, wherein the door and the outer panel sandwich the mounting portion to prevent displacement of the key cap.

9. The infusion pump of claim 1, wherein an outer surface of the key cap is flush with an outer surface of the outer panel or the outer surface of the key cap is raised relative to the outer surface of the outer panel.

10. The infusion pump of any of claims 1-9, wherein the outer panel has a transparent region and an opaque region disposed around the transparent region, the touch screen and the display screen are stacked on a back side of the transparent region, a display region of the display screen is transparent from the transparent region, and the key hole is disposed in the opaque region.

11. The infusion pump of claim 10, wherein the shortest distance from the transparent area to the key hole wall is 2-4 mm.

12. Infusion pump according to any of claims 1-9, characterized in that a seal is arranged between the key cap and the wall of the opening of the key hole and/or sealed by glue.

13. The infusion pump according to any one of claims 1 to 9, wherein the door body has a screen mounting area, the screen mounting area is a mounting cavity matching the shape of the screen assembly, a circle of support table for supporting the screen assembly is arranged on a side wall of the mounting cavity, the outer panel, the touch screen and the display screen are sequentially stacked, the periphery of the outer panel protrudes out of the touch screen, the support table is provided with a glue dispensing groove for accommodating glue solution, the protruding part of the outer panel is placed on the support table, and the outer panel is bonded with the door body through the glue solution in the glue dispensing groove.

14. The infusion pump of claim 13, wherein a sidewall of the dispensing slot has a plurality of protrusions that divide the dispensing slot into a plurality of dispensing compartments.

15. The infusion pump of claim 14, wherein the dispensing compartments at the corners are longer than the dispensing compartments at other non-corners.

16. The infusion pump of claim 13, wherein the peripheral ledge of the outer panel is positioned above the support platform and encloses a first adhesive area with the support platform and the side wall of the mounting chamber, and wherein the display screen is positioned to the side of the support platform.

17. The infusion pump according to claim 13, wherein the door body is provided with a water guide groove, a gap between the screen assembly and the side wall of the mounting cavity is communicated with the water guide groove, and the water guide groove extends to the outside of the door body and is used for guiding out moisture in the gap.

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