WO2021092956A1 - 输液泵 - Google Patents

输液泵 Download PDF

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Publication number
WO2021092956A1
WO2021092956A1 PCT/CN2019/118999 CN2019118999W WO2021092956A1 WO 2021092956 A1 WO2021092956 A1 WO 2021092956A1 CN 2019118999 W CN2019118999 W CN 2019118999W WO 2021092956 A1 WO2021092956 A1 WO 2021092956A1
Authority
WO
WIPO (PCT)
Prior art keywords
assembly
pump
lock rod
infusion
pump body
Prior art date
Application number
PCT/CN2019/118999
Other languages
English (en)
French (fr)
Inventor
郑宏
董申辉
邓南方
胡莲
刘华勇
卢艺
张学刚
Original Assignee
深圳迈瑞科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳迈瑞科技有限公司 filed Critical 深圳迈瑞科技有限公司
Priority to EP19952523.9A priority Critical patent/EP4056209A4/en
Priority to PCT/CN2019/118999 priority patent/WO2021092956A1/zh
Publication of WO2021092956A1 publication Critical patent/WO2021092956A1/zh

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/14212—Pumping with an aspiration and an expulsion action
    • A61M5/14228—Pumping with an aspiration and an expulsion action with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/172—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic
    • A61M5/1723—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic using feedback of body parameters, e.g. blood-sugar, pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/12—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit
    • A61M2205/121—General characteristics of the apparatus with interchangeable cassettes forming partially or totally the fluid circuit interface between cassette and base
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/82—Internal energy supply devices
    • A61M2205/8206—Internal energy supply devices battery-operated

Definitions

  • the present application relates to the field of medical equipment, and in particular to the structure of an infusion pump.
  • an infusion pump is a kind of widely used liquid infusion equipment.
  • an infusion pump includes a pump body and a pump door.
  • the pump body generally has an infusion tube installation structure and other required components, such as a pump body assembly, a drive mechanism for controlling the pump door and the pump body to lock, a power module, and a battery assembly. and many more.
  • This application mainly provides a new type of infusion pump to improve the compactness of the structure of the infusion pump.
  • An embodiment of the present application provides an infusion pump, which includes a pump main body and a pump door, the pump door being installed on the pump main body in a lockable and openable manner;
  • the pump body includes a pump body housing, a control module, an external interface assembly, a power supply module, a battery assembly, a lock rod assembly, a lock rod drive mechanism, and a pump body assembly.
  • the pump body housing has a mounting cavity, and the pump body housing faces One side of the pump door is a front cover.
  • the front cover has an infusion tube installation structure for installing an infusion tube and a pump body installation position for installing a pump body assembly; the control module, external interface assembly, power supply module, and battery assembly ,
  • the lock rod assembly, the lock rod drive mechanism and the pump body assembly are all installed in the installation cavity; the battery assembly, the pump body assembly and the lock rod drive mechanism are arranged side by side behind the front cover, and the pump body assembly is arranged in
  • the pump body is installed at the position for squeezing the infusion tube;
  • the battery assembly and the lock rod drive mechanism are respectively arranged on both sides of the pump body assembly;
  • the lock rod assembly is located on the pump body assembly and the lock rod drive mechanism
  • the lock rod drive mechanism drives the lock rod assembly to move, so that the lock rod assembly and the pump door are locked and unlocked;
  • the power module and the external interface assembly are arranged side by side, one of which is located behind the pump body assembly , The other is located behind the lock lever drive mechanism;
  • the pump door has a door body, a lock assembly and a pressure tube assembly, the lock assembly and the pressure tube assembly are installed on the door body, the lock assembly is used to lock the lock rod assembly, the pressure tube The component is set corresponding to the position of the pump body component, and is used to squeeze the infusion tube together with the pump body component.
  • the pump body further includes a liquid stop component.
  • the front cover is divided into an upstream area and a downstream area by the pump body component.
  • the downstream area of the front cover is exposed from the front cover so as to stop the flow of liquid in the transfusion tube.
  • the liquid stop assembly is installed in the gap between the lock rod driving mechanism and the front cover.
  • the pump body further includes an upper pressure detection component and a lower pressure detection component, the upper pressure detection component is located in the upstream area of the front cover, and the lower pressure detection component is located downstream of the front cover
  • the upper pressure detection component and the lower pressure detection component are exposed from the front cover to detect the liquid pressure in the infusion tube; the door body is provided with the upper pressure detection The upper pressure detection pressure block corresponding to the component and the lower pressure detection pressure block corresponding to the lower pressure detection component.
  • the upper pressure detection assembly is installed in the gap between the battery assembly and the front cover.
  • the down force detection assembly is installed in the gap between the lock rod driving mechanism and the front cover.
  • the pump body further includes an upper ultrasonic detection assembly and a lower ultrasonic detection assembly, the upper ultrasonic detection assembly is located in the upstream area of the front cover and downstream of the upper pressure detection assembly;
  • the detection component is located in the downstream area of the front cover and upstream of the lower pressure detection component; the upper ultrasonic detection component and the lower ultrasonic detection component are exposed from the front cover to detect air bubbles in the infusion tube; the door body
  • An upper ultrasonic detection pressure block corresponding to the upper ultrasonic detection component and a lower ultrasonic detection pressure block corresponding to the lower ultrasonic detection component are provided.
  • the pump body further includes an upper ultrasonic detection assembly and a lower ultrasonic detection assembly, the upper ultrasonic detection assembly is located in the upstream area of the front cover and upstream of the upper pressure detection assembly;
  • the detection component is located in the downstream area of the front cover and between the lower pressure detection component and the liquid stop component; the upper ultrasonic detection component and the lower ultrasonic detection component are exposed from the front cover to detect air bubbles in the infusion tube;
  • the door body is provided with an upper ultrasonic detection pressure block corresponding to the upper ultrasonic detection component and a lower ultrasonic detection pressure block corresponding to the lower ultrasonic detection component.
  • the upper ultrasonic detection assembly is installed in the gap between the battery assembly and the front cover.
  • the lower ultrasonic detection assembly is installed in the gap between the lock rod driving mechanism and the front cover.
  • the pump body further includes an upper tube in-position detection assembly and a lower tube in-position detection assembly
  • the upper tube in-position detection assembly is located in the upstream area of the front cover, and is located in the upper pressure detection assembly and Upstream of the upper ultrasonic detection assembly
  • the lower tube in-position detection assembly is located in the downstream area of the front cover and downstream of the liquid stop assembly
  • the upper tube in-position detection assembly and the lower tube in-position detection assembly are separated from the The front cover is exposed in order to detect whether the infusion tube is installed in place.
  • the upper tube in-situ detection assembly is installed in the gap between the battery assembly and the front cover.
  • the down tube in-position detection assembly is installed on the rear side of the front cover, and is located outside the lock lever driving mechanism.
  • the upper tube in-position detection assembly and the lower tube in-position detection assembly are respectively arranged at the outermost ends of both sides of the front cover.
  • the pump body further includes a drop count sensor, which is arranged behind the upper tube in-position detection assembly.
  • the pump body housing is at least partly a first metal mounting seat made of a metal material, and the pump body assembly, the lock rod assembly, and the lock rod drive mechanism are mounted on the first metal mounting seat
  • the door body of the pump door is at least partly a second metal mounting seat made of metal material, and the pressure tube and the lock assembly are mounted on the second metal mounting seat;
  • One end of the first metal mounting seat is rotatably connected with the second metal mounting seat, so that the door body rotates relative to the pump body; a locking position and an unlocking position are provided on the movement track of the second metal mounting seat;
  • the locked position the lock rod assembly is locked with the lock assembly, the pressure tube assembly and the pump body assembly are located on both sides of the infusion tube, and the pump body assembly squeezes the infusion tube when it is activated for infusion
  • the unlocking position the lock rod assembly and the lock buckle assembly are unlocked, so that the pressure tube assembly can be moved away from the side of the infusion tube to release the infusion.
  • the pump body further includes a first metal mounting seat, the first metal mounting seat is installed in the pump body housing, and the pump body assembly, the lock rod assembly, and the lock rod drive mechanism are mounted on The first metal mounting seat;
  • the pump door includes a second metal mounting seat, the second metal mounting seat is arranged in the door body, the pressure tube assembly and the locking assembly are mounted on the second metal Mounting seat;
  • One end of the first metal mounting seat is rotatably connected with the second metal mounting seat, so that the door body rotates relative to the pump body; a locking position and an unlocking position are provided on the movement track of the second metal mounting seat;
  • the lock lever assembly is locked with the lock assembly, the pressure tube assembly and the pump body assembly are located on both sides of the infusion tube, and the pump body assembly squeezes the infusion tube when the pump body assembly is activated for infusion;
  • the unlocking position the lock rod assembly and the lock buckle assembly are unlocked, so that the pressure tube assembly can be moved away from one side of the infusion tube to release the infusion tube.
  • the first metal mounting seat includes an upper metal piece and a lower metal piece
  • the pump body assembly is fixedly installed on the lower metal piece or the upper metal piece
  • the lock rod assembly is movably installed On the upper metal piece
  • the upper metal piece is fixedly mounted on the lower metal piece
  • the second metal mounting seat is hinged to the lower metal piece.
  • the lower metal piece is approximately a U-shaped structure
  • the upper metal piece is approximately an inverted U-shaped structure
  • the upper metal piece is butted with the lower metal piece and is fixedly connected by the metal piece.
  • the lock rod driving mechanism has a driving part and an output part connected with the driving part, the lock rod assembly is rotatably mounted on the output part, and the output part drives the output part.
  • the lock rod assembly makes a reciprocating linear movement along the first axis in the horizontal plane, so that the lock rod assembly is locked with the lock catch or unlocked with the lock catch; the first axis passes through the center of the axis of the output member
  • the centerline of rotation of the lock rod assembly relative to the output member and the first axis are located in the same horizontal plane and perpendicular to the first axis.
  • the output member and the lock rod assembly are in line contact and/or point contact, and the contact positions of the line contact and/or the point contact are symmetrically distributed on two sides of the first axis.
  • the side and the first axis are located in the same horizontal plane, and the line connecting the contact positions between the output member and the lock rod assembly is perpendicular to the first axis.
  • the driving mechanism includes a screw nut transmission mechanism
  • the driving member is a motor
  • a nut in the screw nut transmission mechanism is used as the output member
  • the lock rod assembly is installed on the nut
  • the motor drives the screw rod in the screw nut transmission mechanism, thereby driving the nut and the lock rod assembly to move, and the first axis coincides with the central axis of the screw rod in the screw nut transmission mechanism .
  • two sides of the nut are respectively provided with protrusions
  • the lock rod assembly is provided with a bayonet corresponding to the protrusions
  • the bayonet is sleeved on the outer wall of the protrusion
  • the bayonet The inner wall is in line contact with the outer wall of the protrusion.
  • the bayonet has a U-shaped opening, and the U-shaped bayonet is sleeved on the protrusion.
  • the lock lever assembly has a buckle
  • the buckle has a buckle surface for contacting the corresponding lock buckle component and buckle the lock buckle component
  • the buckle surface has a first inclined surface and A second inclined surface
  • the first inclined surface is arranged at the outer end of the buckling surface
  • the second inclined surface is connected to an inward end of the first inclined surface
  • the inclination angle of the first inclined surface is greater than the inclination angle of the second inclined surface .
  • the lock lever assembly includes a lock lever and a connecting piece, the lock lever has the buckle, the lock lever is connected to the connecting piece, and the connecting piece and the output piece are rotatable The connection makes the output member drive the connecting member and the lock lever to move.
  • the pump body assembly includes a pump mounting seat, a peristaltic pump, and an elastic member
  • the pump mounting seat is fixedly mounted on a first metal mounting seat
  • the peristaltic pump is mounted on the pump mounting seat
  • the elastic member acts between the peristaltic pump and the first metal mounting seat to provide the peristaltic pump with an elastic restoring force that drives the peristaltic pump to move in the direction of the pressure tube assembly.
  • the infusion pump includes a pump main body and a pump door.
  • the pump body includes a pump body shell, a control module, an external interface assembly, a power supply module, a battery assembly, a lock rod assembly, a lock rod drive mechanism, and a pump body assembly.
  • the side of the pump body shell facing the pump door is the front cover.
  • the battery assembly, the pump body assembly and the lock rod drive mechanism are arranged side by side behind the front cover.
  • the pump body assembly is arranged at the pump body installation position to squeeze the infusion tube.
  • the battery assembly and the lock rod drive mechanism are respectively arranged on both sides of the pump body assembly.
  • the lock rod assembly is located above the pump body assembly and the lock rod drive mechanism.
  • the power module and the external interface assembly are arranged side by side, one of which is located behind the pump body assembly, and the other is located behind the lock lever drive mechanism.
  • the overall layout is set according to the volume and shape of each component, which can make full use of the advantages and disadvantages of the volume and shape of each component, making the overall structure more compact and the whole machine smaller.
  • FIGS. 1 and 2 are schematic diagrams of the structure of the infusion pump (with the pump door open) in an embodiment of the application;
  • FIG. 3 and 4 are schematic diagrams of the internal structure layout of the pump body in an embodiment of the application.
  • FIG. 5 is a schematic diagram of the cooperation structure of the first metal mounting seat and the second metal mounting seat (unlocked state) in an embodiment of the application;
  • FIG. 6 is a schematic diagram of the cooperative structure of the first metal mounting seat and the second metal mounting seat (locked state) in an embodiment of the application;
  • Figure 7 is a schematic diagram of the installation of the pump body assembly in an embodiment of the application.
  • FIG. 8 is a schematic diagram of the cooperation structure of the lock rod assembly and the lock buckle assembly in a locked state in an embodiment of the application;
  • FIG. 9 is a schematic diagram of the installation structure of the pump body assembly in an embodiment of the application.
  • FIG. 10 is a schematic structural diagram of a pump body assembly in an embodiment of the application.
  • FIG. 11 is a schematic diagram of the cooperation structure of the lock rod assembly and the lock rod driving mechanism in an embodiment of the application;
  • FIG. 12 is a schematic diagram of the assembly structure of the lock rod assembly and the screw nut transmission mechanism in an embodiment of the application;
  • Figure 13 is a partial cross-sectional view of the screw rod in the screw nut transmission mechanism in an embodiment of the application;
  • FIG. 14 is a schematic diagram of the structure of the locking surface of the lock rod in an embodiment of the application.
  • connection and “connection” mentioned in this application include direct and indirect connection (connection) unless otherwise specified.
  • This embodiment provides an infusion pump.
  • the infusion pump is used to control parameters such as the number of infusion drops or the infusion flow rate, so as to ensure that the medicine can be installed at a set speed, the amount of medicine can be accurately and safely entered into the patient's body.
  • the infusion pump includes a pump main body 100 and a pump door 200.
  • the pump door 200 is installed on the pump body 100 in a lockable and openable manner.
  • the pump door 200 is rotatably mounted on the pump body 100 so that the pump door 200 can be rotated to open and close the pump door 200.
  • the pump door 200 moves to a corresponding locking position and is locked with the pump body 100 for infusion.
  • the lockable and openable manner is not limited to the pump door 200 being rotatably connected to the pump body 100.
  • the pump door 200 may be locked and opened with the pump body 100 by sliding, turning, folding, etc. .
  • the lockable and openable manner may also be to connect the pump door 200 to the pump body 100 in a detachable manner, that is, in the open state, the pump door 200 can be completely detached from the pump body 100 , When it needs to be locked, install the pump door 200 on the pump body 100.
  • the pump body 100 includes a pump body housing 110, a control module (not shown in the figure), an external interface component 120, a power module 130, a battery component 140, and a lock lever component 150 (combined with Figure 11) , The lock rod drive mechanism 160 and the pump body assembly 170.
  • the pump body housing 110 has an installation cavity for installing various components.
  • the side of the pump body housing 110 facing the pump door 200 is a front cover 111.
  • the front cover 111 has an infusion tube installation structure for installing an infusion tube and a pump body installation position for installing a pump body assembly 170.
  • the infusion tube installation structure is used to stabilize the infusion tube on the pump body 100 for infusion and various detections.
  • the infusion tube 300 is placed on the infusion tube installation structure of the front cover 111.
  • the infusion tube installation structure can be a clamping structure or other installation structures, and it will not be repeated here.
  • the installation position of the pump body is usually an installation window 1111 (as shown in FIG. 7 ), and the part of the pump body 100 for squeezing the infusion tube 300 can extend from the installation window 1111 to squeeze the infusion tube 300.
  • the control module is the entire control center of the infusion pump, which usually has a processor and related control circuits.
  • the control module is connected with other modules, components, or mechanisms that need to be controlled, so as to control these modules, components, or mechanisms according to system settings.
  • the external interface component 120 is mainly used for signal exchange with external equipment and power supply to the infusion pump.
  • the external interface component 120 can select different interfaces according to needs. For example, in some embodiments, please refer to FIG. 2.
  • the external interface component 120 can include a power interface 121, a USB interface 122, a multi-function interface 123, and the like.
  • the external interface assembly 120 is further provided with a speaker 124 for playing sound signals, and there is no need to install speakers in other locations of the infusion pump.
  • the power module 130 is connected to the control module and used to supply power to the system and other electrical components.
  • the battery assembly 140 plays a role of storing electricity. It usually supplies power when the infusion pump is powered off. Of course, the battery assembly 140 can also be used for power supply in a non-power-off state.
  • the lock rod assembly 150 is used to lock the pump door 200 during operation, and the lock rod driving mechanism 160 is used to drive the lock rod assembly 150 to move, so that the lock rod assembly 150 can be switched between a locked position and an unlocked position.
  • the pump body assembly 170 is used to apply a squeezing force to the infusion tube 300 to drive the liquid in the infusion tube 300 to flow forward.
  • the pump body assembly 170 can adopt various structures capable of squeezing an infusion pump, for example, a peristaltic pump is more commonly used.
  • the control module, the external interface assembly 120, the power supply module 130, the battery assembly 140, the lock rod assembly 150, the lock rod drive mechanism 160, and the pump body assembly 170 are all installed in the installation cavity.
  • the battery assembly 140, the pump body assembly 170 and the lock rod driving mechanism 160 are arranged side by side behind the front cover 111.
  • the pump body assembly 170 is arranged at the installation position of the pump body to squeeze the infusion tube 300.
  • the battery assembly 140 and the lock rod driving mechanism 160 are respectively arranged on both sides of the pump body assembly 170.
  • the lock rod assembly 150 is located above the pump body assembly 170 and the lock rod drive mechanism 160 (shown in conjunction with Figures 5 and 6).
  • the lock rod drive mechanism 160 drives the lock rod assembly 150 to move to lock the lock rod assembly 150 and the pump door 200 And unlock.
  • the power module 130 and the external interface assembly 120 are arranged side by side, one of which is located behind the pump body assembly 170 and the other is located behind the lock rod driving mechanism 160. In FIGS. 3 and 4, the external interface assembly 120 is located behind the lock rod driving mechanism 160, and the power module 130 is arranged behind the pump body assembly 170. In other embodiments, the positions of the two can be interchanged.
  • the pump door 200 has a door body 210, a lock assembly 220 and a pressure tube assembly 230.
  • the lock assembly 220 and the pressure tube assembly 230 are installed on the door body 210.
  • the door body 210 can be connected to the pump body housing 110 in rotation or in other ways.
  • the lock assembly 220 is used for locking with the lock rod assembly 150
  • the pressure tube assembly 230 is arranged at a position corresponding to the pump body assembly 170, and is used to squeeze the infusion tube 300 together with the pump body assembly 170.
  • the pressure tube assembly 230 may be a pressure tube block or an infusion tube squeezing device with other structures.
  • the overall layout is set according to the volume and shape of each component, which can make full use of the advantages and disadvantages of the volume and shape of each component, making the overall structure more compact and the whole machine smaller.
  • the pump body 100 further includes a liquid stop component 181.
  • the present application divides the front cover 111 into an upstream area and a downstream area according to the liquid flow direction of the infusion tube 300 and the pump body assembly 170 as the boundary. That is, the part of the infusion tube 300 where the liquid flows to the pump body assembly 170 is upstream. 301, the part flowing away from the position of the pump body assembly 170 is the downstream 302, the area of the front cover 111 corresponding to the upstream 301 of the infusion tube 300 is the upstream area, and the area corresponding to the downstream 302 of the infusion tube 300 is the downstream area. In the angle shown in FIG.
  • the liquid in the infusion tube 300 flows from right to left, the part of the front cover 111 on the right side of the pump body assembly 170 is the upstream area, and the part on the left side of the pump body assembly 170 is the downstream area.
  • the liquid stop component 181 is located in the downstream area of the front cover 111 and is exposed from the front cover 111 so as to stop the flow of liquid in the transfusion tube 300.
  • the liquid stop assembly 181 is arranged downstream of the pump body assembly 170, which is beneficial to intercept the flow of more liquid.
  • the liquid stop component 181 is arranged on the outer side of the downstream area as much as possible, and when the infusion is not required, the flow of liquid to the patient is reduced as much as possible to ensure product safety.
  • the liquid stop assembly 181 is installed in the gap between the lock rod driving mechanism 160 and the front cover 111.
  • the liquid stop assembly 181 is located at the front right or directly in front of the lock rod driving mechanism 160 (the side where the front cover 111 is located is the front, and the side opposite to the front cover 111 is the back, the same below), and can make full use of the lock rod driving mechanism 160 and The space between the front cover 111.
  • the liquid stop component 181 may adopt a liquid stop clip or other forms of liquid stop structure.
  • the infusion pump may not be provided with the liquid stop component 181, and a liquid stop structure is manually added to the part of the infusion tube 300 outside the infusion pump to stop the flow of liquid in the infusion tube 300.
  • the pump body 100 further includes an upper pressure detection component 182 and a lower pressure detection component 183.
  • the upper pressure detection assembly 182 is located in the upstream area of the front cover 111.
  • the lower pressure detection component 183 is located in the downstream area of the front cover 111 and upstream of the liquid stop component 181.
  • the upper pressure detection component 182 and the lower pressure detection component 183 are exposed from the front cover 111 to detect the pressure of the liquid in the infusion tube 300.
  • the door body 210 is provided with an upper pressure detection pressure block 241 corresponding to the upper pressure detection assembly 182 and a lower pressure detection pressure block 242 corresponding to the lower pressure detection assembly 183.
  • the upper pressure detection component 182 and the lower pressure detection component 183 can use components such as pressure sensors to detect the pressure in the infusion tube 300.
  • the upper pressure detection component 182 mainly detects the pressure data before the infusion tube 300 is pressurized by the pump body assembly 170
  • the lower pressure detection component 183 mainly detects the pressure data in the infusion tube 300 after the pump body assembly 170 is pressurized. These data are combined and analyzed to obtain accurate pressure data, so as to better adjust the infusion parameters of the infusion pump and improve the safety of the patient during use.
  • the upper pressure detection assembly 182 is installed in the gap between the battery assembly 140 and the front cover 111.
  • the downward pressure detection assembly 183 is installed in the gap between the lock rod driving mechanism 160 and the front cover 111. Further improve the compactness of the whole machine.
  • the pump body 100 further includes an upper ultrasonic detection component 184 and a lower ultrasonic detection component 185.
  • the upper ultrasonic detection assembly 184 is located in the upstream area of the front cover 111 and is located downstream of the upper pressure detection assembly 182.
  • the lower ultrasonic detection assembly 185 is located in the downstream area of the front cover 111 and upstream of the lower pressure detection assembly 183.
  • the upper ultrasonic detection assembly 184 and the lower ultrasonic detection assembly 185 are exposed from the front cover 111 to detect air bubbles in the infusion tube 300.
  • the door body 210 is provided with an upper ultrasonic detection pressure block 251 corresponding to the upper ultrasonic detection assembly 184 and a lower ultrasonic detection pressure block 252 corresponding to the lower ultrasonic detection assembly 185.
  • This double detection method of pressure and ultrasonic can not only detect the pressure in the tube, but also detect the bubbles in the tube, which can improve the accuracy of the detection of bubbles and pressure and make the product safer.
  • the upper ultrasonic detection component 184 and the lower ultrasonic detection component 185 are respectively located outside the upper pressure detection component 182 and the lower pressure detection component 183. In fact, the positions of the ultrasonic detection component and the pressure detection component can be interchanged. .
  • the upper ultrasonic detection assembly 184 is located in the upstream area of the front cover 111 and upstream of the upper pressure detection assembly 182.
  • the lower ultrasonic detection component 185 is located in the downstream area of the front cover 111 and between the lower pressure detection component 183 and the liquid stop component 181.
  • the upper ultrasonic detection assembly 184 is installed in the gap between the battery assembly 140 and the front cover 111.
  • the lower ultrasonic detection assembly 185 is installed in the gap between the lock rod driving mechanism 160 and the front cover 111.
  • the pump body 100 further includes an upper tube in-position detection assembly 186 and a lower tube in-position detection assembly 187.
  • the upper tube in-position detecting assembly 186 is located in the upstream area of the front cover 111 and upstream of the upper pressure detecting assembly 182 and the upper ultrasonic detecting assembly 184.
  • the down tube in-position detection assembly 187 is located in the downstream area of the front cover 111 and downstream of the liquid stop assembly 181.
  • the upper tube in-position detection assembly 186 and the lower tube in-position detection assembly 187 are exposed from the front cover 111 to detect whether the infusion tube 300 is installed in place.
  • the upper tube in-position detection assembly 186 is installed in the gap between the battery assembly 140 and the front cover 111.
  • the down tube in-position detection assembly 187 is installed on the rear side of the front cover 111 and located outside the lock lever driving mechanism 160.
  • the upper tube in-position detection component 186 and the lower tube in-position detection component 187 can detect and prompt whether the infusion tube 300 is installed in the correct position.
  • the most difficult positions for the infusion tube 300 to be installed in place are the two outermost sides of the machine. Therefore, as shown in FIG. 1, in an embodiment, the upper tube in-position detection assembly 186 and the lower tube in-position detection assembly 187 are respectively provided At the outermost ends on both sides of the front cover 111, in order to effectively realize the tube in-situ monitoring and improve product safety.
  • the pump body 100 further includes a drip count sensor 188, which is arranged behind the upper tube in-position detection assembly 186. It can be used to detect the state of liquid dripping and count the liquid drops.
  • the pump body 100 further includes a wireless signal module 189, such as a WIFI module, a Bluetooth module, etc., which are arranged outside the lock lever driving mechanism 160 and located in the external interface assembly
  • a wireless signal module 189 such as a WIFI module, a Bluetooth module, etc.
  • the front of 120 can also be replaced with power module 130), sufficient space for this part.
  • the pump body housing 110 is usually located on the outside of the pump body 100.
  • the above-mentioned control module, external interface assembly 120, power supply module 130, battery assembly 140, lock lever assembly 150, lock lever drive mechanism 160, and pump body assembly 170 are all directly located. Or indirectly mounted on the pump body housing 110.
  • the pump door 200 is usually also installed on the pump body housing 110 for relative movement.
  • the flow of liquid in the infusion pump is driven by the squeezing force applied to the infusion tube 300 by the pump body assembly 170 (such as a peristaltic pump) and the pressure tube block used with the pump body assembly 170.
  • the pump body assembly 170 and the pressure tube block Squeeze the infusion tube 300 from both sides of the infusion tube 300, that is, the infusion tube 300 will generate corresponding reaction forces on the pump body assembly 170 and the briquetting tube.
  • the pump body housing 110 is made of plastic, and the pump body assembly 170 is installed on the plastic pump body housing 110 through a threaded part. When the pump body assembly 170 is subjected to the reaction force of the infusion tube 300 for a long time during operation, this force is equivalent to an alternating force.
  • the pump body 100 further includes a first metal mounting seat 112.
  • the first metal mounting base 112 is installed in the pump body housing 110.
  • At least the pump body assembly 170, the lock rod assembly 150 and the lock rod driving mechanism 160 are mounted on the first metal mounting base 112.
  • the pump door 200 includes a second metal mounting seat 211, the second metal mounting seat 211 is arranged in the door body 210, and at least the pressure tube assembly 230 and the locking assembly 220 are mounted on the second metal mounting seat 211.
  • the pump body housing 110 and the door 210 are not limited to metal materials, and they can still be made of plastic.
  • the pump body housing 110 is a first metal mounting seat made of a metal material. That is, the pump main body housing 110 may be partially or entirely made of a metal material, thereby forming a first metal mounting seat.
  • the first metal mounting seat can be used as one or more parts of the front cover 111, the bottom cover, the top cover, and the rear cover of the pump body 100.
  • At least the pump body assembly 170, the lock rod assembly 150 and the lock rod drive mechanism 160 are mounted on the first metal mounting seat.
  • Other components can also be installed on the first metal mounting seat, and can also be installed on other parts of the pump body housing 110 (if there is a non-metal part).
  • the door body 210 of the pump door 200 is at least partly a second metal mounting seat made of metal materials, that is, the door body 210 may be partly or completely made of metal materials to form a second metal mounting seat.
  • the pressure tube assembly 230 and the locking assembly 220 are installed on the second metal mounting seat.
  • first metal mounting base 112 is rotatably connected with the second metal mounting base 211, so that the door body 210 rotates relative to the pump body 100.
  • the second metal mounting seat 211 has a locked position and an unlocked position on the movement track; in the locked position, the lock rod assembly 150 is locked with the lock assembly 220, and the pressure tube assembly 230 and the pump body assembly 170 are located on both sides of the infusion tube 300 ,
  • the pump body assembly 170 is activated, the infusion tube 300 is squeezed for infusion; in the unlocked position, the lock rod assembly 150 and the lock assembly 220 are unlocked, so that the pressure tube assembly 230 can be removed from one side of the infusion tube 300 and released Infusion.
  • the strength and rigidity of the metal parts are relatively good, they are not easy to deform and crack after being stressed, which can ensure that the pump body assembly 170 and the pressure tube assembly 230 will interact with the corresponding first metal mounting seat 112 and the corresponding first metal mounting seat 112 and the corresponding first metal mounting seat 112 and The fixing of the second metal mounting seat 211 is still reliable.
  • the reaction force of the infusion tube 300 received by the pump body assembly 170 and the pressure tube assembly 230 will be respectively transmitted to the first metal mounting seat 112 and the second metal mounting seat 211, and at this time the first metal mounting seat 112 and The second metal mounting bases 211 are connected to each other, with the high strength and rigidity of the metal material, so as to form a closed loop transmission of force, so that part of the force is offset each other, and the force damage to the metal brackets and components is reduced. , To ensure the reliability of the fixing of the pump body assembly 170, thereby ensuring the safety of the product.
  • the lock rod assembly 150 is movably mounted on the pump body housing 110 or the first metal mounting base 112.
  • the pump main body housing 110 or the first metal mounting base 112 has a protruding guide limiter 1125
  • the lock rod assembly 150 has a corresponding guide port 1512
  • the guide port 1512 is sleeved on the guide limiter 1125
  • the guide port Wear-resistant parts 1126 are installed in the area in 1512 that is in contact with the guide limiting portion 1125.
  • first metal mounting base 112 and the second metal mounting base 211 may be an integrally formed structure, or may be formed by fixedly connecting a plurality of metal components.
  • the first metal mounting base 112 and the second metal mounting base 211 can be sheet metal parts, die-cast parts, machined parts, profile parts, and the like.
  • the first metal mounting base 112 includes an upper metal piece 1121 and a lower metal piece 1122
  • the pump body assembly 170 is fixedly mounted on the lower metal piece 1122 or the upper metal piece 1121
  • the lock rod assembly 150 is movably installed on the upper metal piece 1121
  • the upper metal piece 1121 is fixedly installed on the lower metal piece 1122
  • the second metal mounting seat 211 is hinged to the lower metal piece 1122.
  • the first metal mounting base 112 can also be formed by combining left and right metal pieces.
  • the lower metal piece 1122 is roughly U-shaped
  • the upper metal piece 1121 is roughly an inverted U-shaped structure
  • the upper metal piece 1121 and the lower metal piece 1122 are butted and pass through the metal piece (such as screw 1124) fixed connection.
  • the front cover metal piece 1123 is fixedly connected to the first metal piece and the second metal piece for installing related components on the front cover 111 .
  • the front cover metal piece 1123 can be used as the front cover 111 of the pump body 100, or it can be made of different materials from the front cover 111, and then the two are assembled together.
  • the front cover 111 is made of plastic.
  • a peristaltic pump is taken as an example.
  • the pump body assembly 170 includes a pump mounting base 171, a peristaltic pump 172 and an elastic member 173.
  • the pump mounting base 171 is fixedly mounted on the first metal mounting base 112, for example, can be mounted on the lower metal member 1122.
  • the peristaltic pump 172 is mounted on the pump mounting base 171, for example, can be mounted on the sliding shaft 176 of the pump mounting base 171.
  • the elastic member 173 acts between the peristaltic pump 172 and the first metal mounting base 112 to provide the peristaltic pump 172 with an elastic restoring force that drives the peristaltic pump 172 to move toward the pressure tube assembly 220.
  • the pump mounting base 171 is fixedly mounted on the lower metal member 1122 by a metal piece (such as screws 175 ). Of course, it may also be mounted on the upper metal piece 1121 or other places of the first metal mounting base 112.
  • lock rod assembly 150 is movably mounted on the first metal mounting base 112, such as the upper metal piece 1121. During the movement of the lock lever assembly 150, it is locked and unlocked with the locking mechanism on the pump door 200, so that the pump door 200 and the pump body 100 are locked and unlocked.
  • the usual lock rod driving mechanism 160 uses a motor, which drives the screw rod, the screw rod drives the matching nut, the nut is connected to the lock rod of the lock rod assembly 150, and the lock rod translates along with the nut to achieve the lock with the lock buckle on the pump door 200 And unlocking, thereby realizing the opening and closing of the pump door 200 of the infusion pump. Due to the greater force of the lock rod to open and close the door and the greater load of the lock rod, the traditional method is to directly and rigidly fix the nut on the lock rod. When the movement direction of the lock rod cannot be kept parallel to the screw rod, the nut and the screw rod cooperate to produce a torque, which causes the motor to output a greater torque to drive the lock rod to move.
  • the lock rod driving mechanism 160 has a driving member and an output member drivingly connected with the driving member.
  • the lock rod assembly 150 is rotatably installed on the output member, and the output member drives the lock rod assembly 150 to make a reciprocating linear movement along the first axis in the horizontal plane, so that the lock rod assembly 150 is locked with the lock or unlocked from the lock.
  • the first axis passes through the axis of the output member.
  • the output member is the nut 163 of the screw nut transmission mechanism.
  • the first axis passes through the axis of the nut 163, that is, and The center axes of the screw rod 162 to which the nut 163 is paired coincide.
  • the output member may also be other components, such as a cylinder or a piston rod in a hydraulic cylinder.
  • the first axis coincides with the central axis of the piston rod.
  • the rotation center line of the lock rod assembly 150 relative to the output member and the first axis are located in the same horizontal plane and perpendicular to the first axis.
  • the lock rod assembly 150 is rotatably installed on the output member, and the rotation center line of the lock rod assembly 150 relative to the output member and the first axis are located in the same horizontal plane and perpendicular to the first axis.
  • the lock rod assembly 150 can rotate relative to the output member, so as to adjust the shaft coordination structure with the output member through this rotation connection mode, and will not drive the output member around the rotation centerline.
  • the reaction force of the lock rod assembly 150 to the output member will not produce a moment off the center of the output member, which can prevent the output member from deflection, and thus will not cause the output member to drive the output member (such as the screw rod in the following 162 or other embodiments of the piston cylinder, etc.) cause eccentric torque, and ultimately avoid a series of problems caused by the deflection of the output member.
  • the output member and the lock rod assembly 150 are in line contact and/or point contact, and the contact positions of the line contact and/or the point contact are symmetrically distributed on both sides of the first axis and are located in the same position as the first axis. In a horizontal plane, the line connecting the contact position between the output member and the lock rod assembly 150 is perpendicular to the first axis.
  • the driving mechanism can be selected but not limited to a motor transmission structure.
  • it can also use air cylinders, hydraulic cylinders, or even electromagnets and other structures capable of outputting reciprocating linear motion.
  • the driving mechanism includes a screw nut transmission mechanism
  • the driving part is a motor 161
  • the nut 163 in the screw nut transmission mechanism is used as an output part
  • the lock rod assembly 150 is mounted on the nut 163
  • the motor 161 drives the screw rod 162 in the screw nut transmission mechanism to drive the nut 163 and the lock rod assembly 150 to move.
  • the first axis coincides with the central axis of the screw rod 162 in the screw nut transmission mechanism.
  • At least one of the nut 163 and the lock rod assembly 150 has a protrusion 1631, and the other has a bayonet 1521 corresponding to the protrusion 1631, and the bayonet 1521 can be It is rotatably sleeved on the outer wall of the protrusion 1631, and the inner wall of the bayonet 1521 is in line contact with the outer wall of the protrusion 1631.
  • the two sides of the nut 163 are respectively provided with protrusions 1631, and the lock rod assembly 150 is provided with a bayonet 1521 corresponding to the protrusions 1631.
  • At least one of the inner wall of the bayonet 1521 and the outer wall of the protrusion 1631 has an arc-shaped wall.
  • the protrusion 1631 adopts a cylindrical shape, and the arc-shaped outer wall is in line contact with the inner wall of the bayonet 1521.
  • only the part of the protrusion 1631 that is in contact with the inner wall of the bayonet 1521 can be set as an arc-shaped wall, and other non-contact parts can be adapted to choose other shapes.
  • the inner wall of the bayonet 1521 can also be set to have an arc-shaped wall, and the protrusion 1631 can be set to an arc-shaped wall, or other shapes, such as a plane, to achieve line contact between the two.
  • the bayonet 1521 can also adopt a circular hole, and the protrusion 1631 adopts a round shaft, so that both have arc-shaped walls.
  • the bayonet 1521 is slightly larger than the protrusion 1631, so that the protrusion 1631 can move in the bayonet 1521, so that the lock rod assembly 150 can automatically adjust its position on the nut 163 after being stressed.
  • the output member and the lock rod assembly 150 may also be in point contact.
  • the contact parts on the output member and the lock rod assembly 150 are all set in a spherical shape to form a ball-to-ball butt joint, thereby forming a point contact.
  • the point contact positions are symmetrically distributed on both sides of the first axis, and the connecting lines of all the contact points are on the same horizontal plane and perpendicular to the first axis.
  • the bayonet 1521 has a U-shaped opening, and the U-shaped bayonet 1521 is clamped on the protrusion 1631.
  • the screw rod 162 has rectangular gear teeth 1621.
  • the transmission efficiency of the rectangular gear teeth 1621 is higher than that of triangular teeth and trapezoidal teeth, and the transmission efficiency between the screw rod 162 and the nut 163 can be improved.
  • the motor 161 is drivingly connected to the screw rod 162 of the screw nut transmission mechanism through a gear transmission mechanism 164.
  • a gear transmission mechanism 164 In other embodiments, it can also use a pulley mechanism, a sprocket mechanism, etc., to transmit motion.
  • the lock rod assembly 150 is buckled with the lock catch assembly 220. Therefore, the lock catch assembly 220 has a lock catch with a hook, and the corresponding lock rod assembly 150 has a catch part for mating with the lock catch.
  • the lock rod assembly 150 includes a lock rod 151 and a connecting piece 152, and the buckle part is provided on the lock rod 151.
  • the lock rod 151 is connected with the connecting piece 152, and the connecting piece 152 is rotatably connected with the output piece (such as the nut 163 ), so that the output piece drives the connecting piece 152 and the lock rod 151 to move.
  • the structure connected to the output member in the lock lever assembly 150 can be specifically arranged on the connecting member 152.
  • the lock rod 151 and the connecting member 152 can be fixedly connected or integrally formed.
  • Various methods can be used to achieve a fixed connection between the connecting member 152 and the lock rod 151, such as, but not limited to, screw fastening, clamping, welding, bonding, and the like.
  • the buckle portion has a buckle 1511
  • the buckle 1511 is a hook-shaped structure.
  • the buckle 1511 has a buckling surface 1512 for contacting the corresponding locking component 220 and buckling the locking component 220.
  • the lock assembly 220 first moves to the entrance of the buckle 1511, and then the lock rod 151 is driven by the lock rod drive mechanism 160 to move to the locked position
  • the lock rod 151 moves from right to left to move to the locked position.
  • the buckle surface 1512 is an inclined surface, so the buckle assembly 220 will be driven to gradually approach the side where the lock rod 151 is located, and finally be locked into the groove of the buckle 1511.
  • the lock lever 151 is driven by the lock lever drive mechanism 160 to move to the unlock position. As shown in FIG. 8, the lock lever 151 moves from left to right to release the lock assembly 220, and the pump door can be opened 200.
  • the resistance that hinders the movement of the pump door 200 to the pump body mainly comes from the reaction force on the lock assembly 220 after the infusion tube 300 is squeezed.
  • the lock assembly 220 needs to overcome the reaction force and move toward the lock rod 151. Move a certain distance on the side. If the inclination of the buckling surface 1512 is too small, the buckling surface 1512 must be set to be very long to pull the lock assembly 220 in place, which will cause the entire infusion pump to be too large, which is not conducive to compact design.
  • the lock rod driving mechanism 160 needs to output a larger driving force, which increases the load of the driving member (for example, the motor 161), which will increase the cost of the lock rod driving mechanism 160.
  • the buckling surface 1512 has a first inclined surface 1513 and a second inclined surface 1514.
  • the first inclined surface 1513 is disposed at the outer end of the buckling surface 1512, and the second inclined surface 1512
  • the inclined surface 1514 is connected to an inward end of the first inclined surface 1513, and the inclination angle A1 of the first inclined surface 1513 is greater than the inclination angle A2 of the second inclined surface 1514.
  • the pump door 200 When the pump door 200 needs to be locked with the pump body, the pump door 200 is first moved to the opening of the buckle 1511, and then the lock lever 151 is driven to move to the locked position.
  • the first inclined surface 1513 on the buckle 1511 first contacts the buckle assembly 220.
  • the pump door 200 only slightly squeezes the infusion tube 300, and the reaction force from the infusion tube 300 is not large.
  • the inclination angle A1 of the inclined surface 1513 is set to be relatively large, and the locking assembly 220 is quickly pulled into a certain distance, which will not cause excessive load on the driving part.
  • the first inclined surface 1513 has a relatively large slope, which can quickly pull the lock assembly 220 and the pump door 200 to a certain position, and then slowly pull the lock assembly 220 through the second inclined surface 1514.
  • This combined structure can reduce the stroke of the lock assembly 220 on the buckling surface 1512, so the lock rod 151 does not need to be too long, which is conducive to the compactness of the device, and it can also reduce the load of the driving parts (such as the motor 161) , To avoid damage to the driving parts, and also to reduce the cost of the lock rod driving mechanism 160.
  • the lock rod 151 is a long strip-shaped sheet structure, and there are at least two buckling parts, which are arranged on the side of the lock rod 151 facing the corresponding lock.
  • FIG. 5 there are three buckles 1511 shown in the figure, which are arranged on the lock rod 151 at the same interval.

Abstract

一种输液泵，其包括泵主体（100）和泵门（200）。泵主体（100）包括泵主体外壳（110）、控制模块、外部接口组件（120）、电源模块（130）、电池组件（140）、锁杆组件（150）、锁杆驱动机构（160）以及泵体组件（170）。泵主体外壳（110）朝向泵门（200）的一面为前盖（111），电池组件（140）、泵体组件（170）和锁杆驱动机构（160）并排设置在前盖（111）的后方，泵体组件（170）设置在泵主体安装位处，用以挤压输液管（300）。电池组件（140）和锁杆驱动机构（160）分别设置在泵体组件（170）的两侧。锁杆组件（150）位于泵体组件（170）和锁杆驱动机构（160）的上方。电源模块（130）与外部接口组件（120）并排设置，其中一个位于泵体组件（170）的后方，另一个位于锁杆驱动机构（160）的后方。该整体布局根据各部件体积和形状设置，可充分利用各部件体积和形状上的优缺点，使得整体结构更加紧凑，整机体积更小。

Description

输液泵 技术领域
本申请涉及医用器械领域，具体涉及一种输液泵的结构。
 背景技术
输液泵是一类被广泛应用的液体输注设备。通常，输液泵包括泵主体和泵门，泵主体一般具有输液管安装结构以及其他需要的部件，例如，包括泵体组件、用以控制泵门与泵主体锁定的驱动机构、电源模块、电池组件等等。
由于目前医疗设备繁多，医院相关场所摆放空间有限，因此当下对各种输液泵的小型化、紧凑性要求越来越高。现有的输液泵中，其结构布局还有待进一步优化和提高。
 技术问题
本申请主要提供一种新型的输液泵，用以提高输液泵结构的紧凑性。
 技术解决方案
本申请一种实施例中提供了一种输液泵,包括泵主体和泵门，所述泵门以可锁定和打开的方式安装在所述泵主体上；
所述泵主体包括泵主体外壳、控制模块、外部接口组件、电源模块、电池组件、锁杆组件、锁杆驱动机构以及泵体组件，所述泵主体外壳具有安装腔，所述泵主体外壳朝向泵门的一面为前盖，所述前盖具有用于安装输液管的输液管安装结构和用于安装泵体组件的泵主体安装位；所述控制模块、外部接口组件、电源模块、电池组件、锁杆组件、锁杆驱动机构以及泵体组件均安装在所述安装腔内；所述电池组件、泵体组件和锁杆驱动机构并排设置在前盖的后方，所述泵体组件设置在泵主体安装位处，用以挤压所述输液管；所述电池组件和锁杆驱动机构分别设置在所述泵体组件的两侧；所述锁杆组件位于泵体组件和锁杆驱动机构的上方，所述锁杆驱动机构驱动锁杆组件移动，以使所述锁杆组件与泵门锁定和解锁；所述电源模块与外部接口组件并排设置，其中一个位于所述泵体组件的后方，另一个位于所述锁杆驱动机构的后方；
所述泵门具有门体、锁扣组件和压管组件，所述锁扣组件和压管组件安装在门体上，所述锁扣组件用于与所述锁杆组件锁定，所述压管组件对应泵体组件的位置设置，用于与所述泵体组件一起挤压输液管。
一种实施例中，所述泵主体还包括止液组件，按照所述输液管的液体流向，所述前盖以泵体组件为界分为上游区和下游区，所述止液组件位于所述前盖的下游区，并从所述前盖上露出，以便截止输液管内液体流动。
一种实施例中，所述止液组件安装在所述锁杆驱动机构与前盖之间的空隙内。
一种实施例中，所述泵主体还包括上压力检测组件和下压力检测组件，所述上压力检测组件位于所述前盖的上游区，所述下压力检测组件位于所述前盖的下游区，且位于所述止液组件的上游，所述上压力检测组件和下压力检测组件从所述前盖上露出，以便检测输液管内液体压力；所述门体设置有与所述上压力检测组件对应的上压力检测压块和与下压力检测组件对应的下压力检测压块。
一种实施例中，所述上压力检测组件安装在所述电池组件与前盖之间的空隙内。
一种实施例中，所述下压力检测组件安装在所述锁杆驱动机构与前盖之间的空隙内。
一种实施例中，所述泵主体还包括上超声检测组件和下超声检测组件，所述上超声检测组件位于前盖的上游区，并位于所述上压力检测组件的下游；所述下超声检测组件位于前盖的下游区，并位于所述下压力检测组件的上游；所述上超声检测组件和下超声检测组件从所述前盖上露出，以便检测输液管内的气泡；所述门体设置有与所述上超声检测组件对应的上超声检测压块和与下超声检测组件对应的下超声检测压块。
一种实施例中，所述泵主体还包括上超声检测组件和下超声检测组件，所述上超声检测组件位于前盖的上游区，并位于所述上压力检测组件的上游；所述下超声检测组件位于前盖的下游区，并位于所述下压力检测组件和止液组件之间；所述上超声检测组件和下超声检测组件从所述前盖上露出，以便检测输液管内的气泡；所述门体设置有与所述上超声检测组件对应的上超声检测压块和与下超声检测组件对应的下超声检测压块。
一种实施例中，所述上超声检测组件安装在所述电池组件与前盖之间的空隙内。
一种实施例中，所述下超声检测组件安装在所述锁杆驱动机构与前盖之间的空隙内。
一种实施例中，所述泵主体还包括上管在位检测组件和下管在位检测组件，所述上管在位检测组件位于前盖的上游区，并位于所述上压力检测组件和上超声检测组件的上游；所述下管在位检测组件位于前盖的下游区，并位于所述止液组件的下游；所述上管在位检测组件和下管在位检测组件从所述前盖上露出，以便检测输液管是否安装到位。
一种实施例中，所述上管在位检测组件安装在所述电池组件与前盖之间的空隙内。
一种实施例中，所述下管在位检测组件安装在所述前盖的后侧，并位于所述锁杆驱动机构的外侧。
一种实施例中，所述上管在位检测组件和下管在位检测组件分别设置在前盖两侧的最外端。
一种实施例中，所述泵主体还包括滴数传感器，其设置在所述上管在位检测组件的后方。
一种实施例中，所述泵主体外壳至少部分为采用金属材料制成的第一金属安装座，所述泵体组件、锁杆组件以及锁杆驱动机构安装在所述第一金属安装座上；所述泵门的门体至少部分为采用金属材料制成的第二金属安装座，所述压管和锁扣组件安装在所述第二金属安装座上；
所述第一金属安装座的一端与所述第二金属安装座转动连接，使所述门体相对泵主体转动；在所述第二金属安装座的运动轨迹上具有锁定位和解锁位；在所述锁定位上，所述锁杆组件与所述锁扣组件锁定，所述压管组件与泵体组件位于输液管的两侧，所述泵体组件启动时挤压输液管，以便进行输液；在所述解锁位上，所述锁杆组件与所述锁扣组件解锁，使得所述压管组件能够从输液管的一侧移开，释放所述输液。
一种实施例中，所述泵主体还包括第一金属安装座，所述第一金属安装座安装在所述泵主体外壳内，所述泵体组件、锁杆组件以及锁杆驱动机构安装在所述第一金属安装座上；所述泵门包括第二金属安装座，所述第二金属安装座设置在所述门体内，所述压管组件和锁扣组件安装在所述第二金属安装座上；
所述第一金属安装座一端与所述第二金属安装座转动连接，使所述门体相对泵主体转动；在所述第二金属安装座的运动轨迹上具有锁定位和解锁位；在所述锁定位上，所述锁杆组件与所述锁扣组件锁定，所述压管组件与泵体组件位于输液管的两侧，所述泵体组件启动时挤压输液管，以便进行输液；在所述解锁位上，所述锁杆组件与所述锁扣组件解锁，使得所述压管组件能够从输液管的一侧移开，释放所述输液管。
一种实施例中，所述第一金属安装座包括上金属件和下金属件，所述泵体组件固定安装在所述下金属件或上金属件上，所述锁杆组件可移动的安装在上金属件上，所述上金属件固定安装在下金属件上，所述第二金属安装座与所述下金属件铰接。
一种实施例中，所述下金属件大致为U形结构，所述上金属件大致为倒U形结构，所述上金属件与下金属件对接并通过金属件固定连接。
一种实施例中，所述锁杆驱动机构具有驱动件和与驱动件传动连接的输出件，所述锁杆组件以可转动的方式安装在所述输出件上，所述输出件带动所述锁杆组件沿水平面内的第一轴线做往复直线运动，以使所述锁杆组件与所述锁扣锁定或者与所述锁扣解锁；所述第一轴线过所述输出件的轴心中心；所述锁杆组件相对输出件转动中心线与所述第一轴线位于同一水平面内且与所述第一轴线垂直。
一种实施例中，所述输出件与锁杆组件之间为线接触和/或点接触，所述线接触的接触位置和/或点接触的接触位置对称分布在所述第一轴线的两侧且与所述第一轴线位于同一个水平面内，所述输出件与锁杆组件之间接触位置的连线与所述第一轴线垂直。
一种实施例中，所述驱动机构包括丝杆螺母传动机构，所述驱动件为电机，所述丝杆螺母传动机构中的螺母作为所述输出件，所述锁杆组件安装在所述螺母上，所述电机驱动所述丝杆螺母传动机构中的丝杆，从而带动所述螺母以及锁杆组件进行移动，所述第一轴线与所述丝杆螺母传动机构中丝杆的中心轴线重合。
一种实施例中，所述螺母两侧分别设有凸起，所述锁杆组件对应所述凸起设置有卡口，所述卡口套在所述凸起外壁上，所述卡口的内壁与所述凸起的外壁线接触。
一种实施例中，所述卡口具有U形开口，所述U形卡口卡套在所述凸起上。
一种实施例中，所述锁杆组件具有卡扣，所述卡扣具有用以与对应锁扣组件接触并扣住所述锁扣组件的扣合面，所述扣合面具有第一斜面和第二斜面，所述第一斜面设置在所述扣合面的外端，所述第二斜面与第一斜面向内的一端连接，所述第一斜面的倾斜角度大于第二斜面的倾斜角度。
一种实施例中，所述锁杆组件包括锁杆和连接件，所述锁杆具有所述卡扣，所述锁杆与所述连接件连接，所述连接件与所述输出件可转动的连接，使所述输出件带动连接件以及锁杆运动。
一种实施例中，所述泵体组件包括泵安装座、蠕动泵以及弹性件，所述泵安装座固定安装在第一金属安装座上，所述蠕动泵安装在所述泵安装座上，所述弹性件作用于蠕动泵以及第一金属安装座之间，向蠕动泵提供一个驱动蠕动泵朝压管组件方向移动的弹性回复力。
 有益效果
依据上述实施例的输液泵，其包括泵主体和泵门。该泵主体包括泵主体外壳、控制模块、外部接口组件、电源模块、电池组件、锁杆组件、锁杆驱动机构以及泵体组件。泵主体外壳朝向泵门的一面为前盖，该电池组件、泵体组件和锁杆驱动机构并排设置在前盖的后方，泵体组件设置在泵主体安装位处，用以挤压输液管。电池组件和锁杆驱动机构分别设置在泵体组件的两侧。锁杆组件位于泵体组件和锁杆驱动机构的上方。电源模块与外部接口组件并排设置，其中一个位于泵体组件的后方，另一个位于锁杆驱动机构的后方。该整体布局根据各部件体积和形状设置，可充分利用各部件体积和形状上的优缺点，使得整体结构更加紧凑，整机体积更小。
 附图说明
图1和2为本申请一种实施例中输液泵（泵门打开状态）的结构示意图；
图3和4为本申请一种实施例中泵体内部结构布局示意图；
图5为本申请一种实施例中第一金属安装座和第二金属安装座（解锁状态）配合结构示意图；
图6为本申请一种实施例中第一金属安装座和第二金属安装座（锁定状态）配合结构示意图；
图7为本申请一种实施例中泵体组件安装示意图；
图8为本申请一种实施例中锁杆组件与锁扣组件锁定状态下的配合结构示意图；
图9为本申请一种实施例中泵体组件安装结构示意图；
图10为本申请一种实施例中泵体组件的结构示意图；
图11为本申请一种实施例中锁杆组件和锁杆驱动机构的配合结构示意图；
图12为本申请一种实施例中锁杆组件与丝杆螺母传动机构的装配结构示意图；
图13为本申请一种实施例中丝杆螺母传动机构中丝杆的局部剖视图；
图14为本申请一种实施例中锁杆扣合面的结构示意图。
 本发明的实施方式
下面通过具体实施方式结合附图对本发明作进一步详细说明。其中不同实施方式中类似元件采用了相关联的类似的元件标号。在以下的实施方式中，很多细节描述是为了使得本申请能被更好的理解。然而，本领域技术人员可以毫不费力的认识到，其中部分特征在不同情况下是可以省略的，或者可以由其他元件、材料、方法所替代。在某些情况下，本申请相关的一些操作并没有在说明书中显示或者描述，这是为了避免本申请的核心部分被过多的描述所淹没，而对于本领域技术人员而言，详细描述这些相关操作并不是必要的，他们根据说明书中的描述以及本领域的一般技术知识即可完整了解相关操作。
另外，说明书中所描述的特点、操作或者特征可以以任意适当的方式结合形成各种实施方式。同时，方法描述中的各步骤或者动作也可以按照本领域技术人员所能显而易见的方式进行顺序调换或调整。因此，说明书和附图中的各种顺序只是为了清楚描述某一个实施例，并不意味着是必须的顺序，除非另有说明其中某个顺序是必须遵循的。
本文中为部件所编序号本身，例如“第一”、“第二”等，仅用于区分所描述的对象，不具有任何顺序或技术含义。而本申请所说“连接”、“联接”，如无特别说明，均包括直接和间接连接（联接）。
本实施例提供了一种输液泵。该输液泵用以控制输液滴数或输液流速等参数，保证药物能够安装设定速度、药量准确并且安全地进入病人体内。
请参考图1至4，该输液泵包括泵主体100和泵门200。泵门200以可锁定和打开的方式安装在泵主体100上。该可锁定和打开的方式中，通常，泵门200转动安装在泵主体100上，使得泵门200可以旋转，以打开和关闭泵门200。当需要进行输液时，该泵门200移动到相应的锁定位置，并与泵主体100锁定，以便进行输液。当然，某些实施例中，该可锁定和打开的方式并不限于泵门200转动连接在泵主体100上，泵门200可能采用滑动、翻转、折叠等方式实现与泵主体100的锁定和打开。此外，另一些实施例中，该可锁定和打开的方式也可能是将泵门200与泵主体100以可拆卸的方式连接，即在打开状态下，泵门200可完全从泵主体100上拆卸，需要锁定时，再将泵门200安装到泵主体100上。
请继续参考图1至6，该泵主体100包括泵主体外壳110、控制模块（图中未标识出）、外部接口组件120、电源模块130、电池组件140、锁杆组件150（结合图11）、锁杆驱动机构160以及泵体组件170。
泵主体外壳110具有安装腔，用于安装各部件。泵主体外壳110朝向泵门200的一面为前盖111，前盖111具有用于安装输液管的输液管安装结构和用于安装泵体组件170的泵主体安装位。该输液管安装结构用于将输液管稳定在泵主体100上，以便进行输液以及各种检测。如图1所示，输液管300被放置在前盖111的输液管安装结构上，通常该输液管安装结构可以为夹持结构或其他安装结构，在此不在赘言。泵主体安装位通常为一个安装窗1111（如图7所示），泵主体100用于挤压输液管300的部分可从该安装窗1111内伸出，从而挤压输液管300。
该控制模块为输液泵整个控制中心，其通常具有处理器以及相关控制电路等。该控制模块与其他需要控制的模块、组件或机构连接，以便按照系统设定来控制这些模块、组件或机构。该外部接口组件120主要用于与外部设备进行信号交流以及实现对输液泵的供电。该外部接口组件120可根据需要选择不同的接口，例如一些实施例中，请参考图2，该外部接口组件120可包括电源接口121、USB接口122、多功能接口123等。此外，为了进一步节省空间，使输液泵更紧凑，一种实施例中，该外部接口组件120还设置有扬声器124，用以播放声音信号，无需在输液泵其他位置再设置扬声器。
电源模块130与控制模块连接，用于对系统以及其他用电部件供电。该电池组件140起到储电的作用，其通常在输液泵断电时进行供电，当然，在非断电状态下，也可用该电池组件140进行供电。该锁杆组件150用于在工作时与泵门200进行锁定，该锁杆驱动机构160则用于驱动锁杆组件150运动，从而使该锁杆组件150在锁定位置和解锁位置之间切换。该泵体组件170用于对输液管300施加挤压力，从而驱动输液管300内液体向前流动。该泵体组件170可采用各类能够挤压输液泵的结构，例如使用较多的为蠕动泵。
该控制模块、外部接口组件120、电源模块130、电池组件140、锁杆组件150、锁杆驱动机构160以及泵体组件170均安装在安装腔内。其中，电池组件140、泵体组件170和锁杆驱动机构160并排设置在前盖111的后方。泵体组件170设置在泵主体安装位处，用以挤压输液管300。电池组件140和锁杆驱动机构160分别设置在泵体组件170的两侧。锁杆组件150位于泵体组件170和锁杆驱动机构160的上方（结合图5和6所示），锁杆驱动机构160驱动锁杆组件150移动，以使锁杆组件150与泵门200锁定和解锁。电源模块130与外部接口组件120并排设置，其中一个位于泵体组件170的后方，另一个位于锁杆驱动机构160的后方。在图3和4中，该外部接口组件120位于锁杆驱动机构160的后方，电源模块130设置在泵体组件170的后方。在其他实施例中，该两者的位置可以互换。
对应地，请参考图1和2，该泵门200具有门体210、锁扣组件220和压管组件230。锁扣组件220和压管组件230安装在门体210上。门体210可与泵主体外壳110转动连接或者采用其他方式连接。锁扣组件220用于与锁杆组件150锁定，压管组件230对应泵体组件170的位置设置，用于与泵体组件170一起挤压输液管300。压管组件230可以为压管块或其他结构的输液管挤压装置。
在上述实施例中，该整体布局根据各部件体积和形状设置，可充分利用各部件体积和形状上的优缺点，使得整体结构更加紧凑，整机体积更小。
进一步地，请参考图1和4，一种实施例中，泵主体100还包括止液组件181。为了便于描述，本申请按照输液管300的液体流向，以泵体组件170为界将前盖111分为上游区和下游区，即输液管300中液体流向泵体组件170所在位置的部分为上游301，从泵体组件170所在位置流走的部分为下游302，该前盖111与输液管300的上游301对应的区域为上游区，与输液管300的下游302对应的区域为下游区。在图1所示角度中，输液管300内液体从右向左流动，该前盖111位于泵体组件170右侧的部分为上游区，位于泵体组件170左侧的部分为下游区。其中，止液组件181位于前盖111的下游区，并从前盖111上露出，以便截止输液管300内液体流动。从输液管300内液体流向来说，将止液组件181设置在泵体组件170的下游，有利于截断更多液体的流动。当不需要输液的时候，可以快速的止住管内液体流动，不让过多液体流入患者。尤其是，将该止液组件181尽可能的设置在下游区的外侧，在不需要输液的时候，尽可能的减少液体流向病人，保证产品安全。
请参考图4，一种实施例中，止液组件181安装在锁杆驱动机构160与前盖111之间的空隙内。止液组件181位于锁杆驱动机构160的右前方或正前方（以前盖111所在一侧为前，与前盖111相对的一侧为后，下同），可以充分利用锁杆驱动机构160与前盖111之间的空间。
上述实施例中，该止液组件181可采用止液夹或其他形式的止液结构。此外，某些实施例中，该输液泵也可不设置止液组件181，而在输液管300位于输液泵外侧的部分手动增加止液结构，止动输液管300内液体流动。
进一步地，为了提高输液泵的安全性，监控输液状态，请参考图1至4，一种实施例中，该泵主体100还包括上压力检测组件182和下压力检测组件183。上压力检测组件182位于前盖111的上游区。下压力检测组件183位于前盖111的下游区，且位于止液组件181的上游。上压力检测组件182和下压力检测组件183从前盖111上露出，以便检测输液管300内液体压力。门体210设置有与上压力检测组件182对应的上压力检测压块241和与下压力检测组件183对应的下压力检测压块242。
该上压力检测组件182和下压力检测组件183可采用压力传感器等部件实现对输液管300内压力的检测。该上压力检测组件182主要检测输液管300被泵体组件170加压前的压力数据，而下压力检测组件183主要检测输液管300内被泵体组件170加压后的压力数据。这些数据进行组合分析，可获得准确的压力数据，以便更好的对输液泵的输液参数进行调整，提高使用时病人的安全性。
请参考图3和4，一种实施例中，上压力检测组件182安装在电池组件140与前盖111之间的空隙内。一种实施例中，下压力检测组件183安装在锁杆驱动机构160与前盖111之间的空隙内。进一步提高整机的紧凑性。
进一步地，为了提高输液泵的安全性，监控输液状态，请参考图1至4，一种实施例中，泵主体100还包括上超声检测组件184和下超声检测组件185。上超声检测组件184位于前盖111的上游区，并位于上压力检测组件182的下游。下超声检测组件185位于前盖111的下游区，并位于下压力检测组件183的上游。上超声检测组件184和下超声检测组件185从前盖111上露出，以便检测输液管300内的气泡。门体210设置有与上超声检测组件184对应的上超声检测压块251和与下超声检测组件185对应的下超声检测压块252。
这种压力和超声双重检测的方式，既能够对管内压力进行检测，又可以对管内气泡进行检测，可以提高气泡和压力的检测的精准度，使产品更安全。
在上述实施例中，该上超声检测组件184和下超声检测组件185分别位于上压力检测组件182和下压力检测组件183的外侧，实际上，该超声检测组件和压力检测组件的位置可以互换。例如，一种实施例中，上超声检测组件184位于前盖111的上游区，并位于上压力检测组件182的上游。下超声检测组件185位于前盖111的下游区，并位于下压力检测组件183和止液组件181之间。
请参考图3和4，一种实施例中，上超声检测组件184安装在电池组件140与前盖111之间的空隙内。一种实施例中，下超声检测组件185安装在锁杆驱动机构160与前盖111之间的空隙内。
进一步地，请参考图1至4，一种实施例中，泵主体100还包括上管在位检测组件186和下管在位检测组件187。上管在位检测组件186位于前盖111的上游区，并位于上压力检测组件182和上超声检测组件184的上游。下管在位检测组件187位于前盖111的下游区，并位于止液组件181的下游。上管在位检测组件186和下管在位检测组件187从前盖111上露出，以便检测输液管300是否安装到位。
请参考图3和4，一种实施例中，上管在位检测组件186安装在电池组件140与前盖111之间的空隙内。一种实施例中，下管在位检测组件187安装在前盖111的后侧，并位于锁杆驱动机构160的外侧。
该上管在位检测组件186和下管在位检测组件187可以检测和提示输液管300是否装在正确的位置。而输液管300最不容易装到位的位置是机器的两个最外侧，因此，如图1所示，一种实施例中，上管在位检测组件186和下管在位检测组件187分别设置在前盖111两侧的最外端，以便有效实现管在位监测，提高产品安全性。
进一步地，请参考图1至4，一种实施例中，泵主体100还包括滴数传感器188，其设置在上管在位检测组件186的后方。可用于对液体滴落的状态进行检测，并对液滴进行计数。
进一步地，请参考图3和4，一种实施例中，泵主体100还包括无线信号模块189，例如WIFI模块、蓝牙模块等，其设置在锁杆驱动机构160的外侧，且位于外部接口组件120（也可替换为电源模块130）的前方，充分这部分的空间。
另一方面，泵主体外壳110通常位于泵主体100的外侧，上述控制模块、外部接口组件120、电源模块130、电池组件140、锁杆组件150、锁杆驱动机构160以及泵体组件170均直接或间接的安装在泵主体外壳110上。泵门200通常也安装在泵主体外壳110上，以便实现相对移动。
输液泵中液体的流动依靠泵体组件170（如蠕动泵）以及与泵体组件170配套使用的压管块所施加给输液管300的挤压力来推动，该泵体组件170和压管块分别从输液管300两侧挤压输液管300，即，输液管300对泵体组件170以及压块管将分别产生对应的反作用力。通常泵主体外壳110采用塑料制成，泵体组件170通过螺纹件安装在塑胶泵主体外壳110上，当泵体组件170在工作时长期受到输液管300的反作用力时，这个力相当于一个交变载荷，塑胶的泵主体外壳110上固定泵体组件170的螺纹件长期受交变载荷冲击时，很容易使泵主体外壳110开裂。进而会导致泵主体外壳110移位，当泵门200和泵体锁定时，该泵主体外壳110和压管块之间的间距变大，尤其是当泵主体外壳110和压管块间距增大至无法对输液管300截流时，输液管300内液体将产生自由流，对患者产生非常的伤害。
因此，请参考图5至8，在一种实施例中，泵主体100还包括第一金属安装座112。该第一金属安装座112安装在泵主体外壳110内。至少泵体组件170、锁杆组件150以及锁杆驱动机构160安装在第一金属安装座112上。泵门200包括第二金属安装座211，第二金属安装座211设置在门体210内，至少压管组件230和锁扣组件220安装在第二金属安装座211上。在该实施例中，该泵主体外壳110以及门体210并不限于金属材料，其依然可采用塑料制成。
此外，另一种实施例中，泵主体外壳110中至少部分为采用金属材料制成的第一金属安装座。即，该泵主体外壳110可以部分或全部采用金属材料制成，从而形成第一金属安装座。例如该第一金属安装座可作为所述泵主体100的前盖111、底盖、顶盖和后盖中的一个或多个部分。至少泵体组件170、锁杆组件150以及锁杆驱动机构160安装在第一金属安装座上。其他部件也可安装在该第一金属安装座上，也可安装在泵主体外壳110的其他部分（如存在非金属部分）。同理，泵门200的门体210至少部分为采用金属材料制成的第二金属安装座，即，该门体210可以部分或全部采用金属材料制成，从而形成第二金属安装座。压管组件230和锁扣组件220安装在第二金属安装座上。
进一步地，该第一金属安装座112的一端与第二金属安装座211转动连接，使门体210相对泵主体100转动。在第二金属安装座211的运动轨迹上具有锁定位和解锁位；在锁定位上，锁杆组件150与锁扣组件220锁定，压管组件230与泵体组件170位于输液管300的两侧，泵体组件170启动时挤压输液管300，以便进行输液；在解锁位上，锁杆组件150与锁扣组件220解锁，使得压管组件230能够从输液管300的一侧移开，释放输液。
由于金属零件的强度及刚性比较好，受力后不易变形及开裂断裂，可保证泵体组件170和压管组件230在受到输液管300反作用力时，其与对应的第一金属安装座112和第二金属安装座211的固定依然可靠。同时，该泵体组件170以及压管组件230所受输液管300的反作用力将会分别传递至第一金属安装座112和第二金属安装座211，而此时该第一金属安装座112和第二金属安装座211之间又相互连接，配合上金属材料的高强度和刚性的特性，从而可形成一个力的闭环传递，使部分作用力相互抵消，减少各金属支架以及部件的受力损伤，保证泵体组件170固定的可靠性，从而保证产品的安全性。
进一步地，请参考图5，一种实施例中，该锁杆组件150以可移动的方式安装在泵主体外壳110或第一金属安装座112上。该泵主体外壳110或第一金属安装座112具有凸出设置的导向限位部1125，锁杆组件150具有对应的导向口1512，导向口1512套设在导向限位部1125上，且导向口1512内与导向限位部1125接触的区域装有耐磨件1126。
进一步地，该第一金属安装座112和第二金属安装座211可以一体成型的结构，也可以由多个金属组件固定连接而成。该第一金属安装座112和第二金属安装座211可采用钣金件、压铸件、机械加工件以及型材件等。
请参考图5至8，一种实施例中，第一金属安装座112包括上金属件1121和下金属件1122，泵体组件170固定安装在下金属件1122或上金属件1121上，锁杆组件150可移动的安装在上金属件1121上，上金属件1121固定安装在下金属件1122上，第二金属安装座211与下金属件1122铰接。
当然，在其他实施例中，该第一金属安装座112也可以由左右金属件拼合而成。
请参考图5至8，作为一种上下拼合示例，下金属件1122大致为U形结构，上金属件1121大致为倒U形结构，上金属件1121与下金属件1122对接并通过金属件（如螺钉1124）固定连接。
请参考图5至8，一种实施例中，还包括前盖金属件1123，该前盖金属件1123与第一金属件和第二金属件固定连接，用以安装前盖111上的相关部件。该前盖金属件1123可作为泵主体100的前盖111使用，也可与前盖111采用不同材料制成，然后将两者装配在一起，例如前盖111采用塑料制成。
请参考图9和10，一种实施例中，以蠕动泵为例。该泵体组件170包括泵安装座171、蠕动泵172以及弹性件173，泵安装座171固定安装在第一金属安装座112上，例如可安装在下金属件1122上。蠕动泵172安装在泵安装座171上，例如可安装在泵安装座171的滑动轴176上。弹性件173作用于蠕动泵172以及第一金属安装座112之间，向蠕动泵172提供一个驱动蠕动泵172朝压管组件220方向移动的弹性回复力。
在图9和10中，该泵安装座171通过金属件（如螺钉175）固定安装在下金属件1122上，当然，其也可能安装在上金属件1121或第一金属安装座112的其他地方。
进一步地，该锁杆组件150可移动的安装在第一金属安装座112上，例如上金属件1121上。在该锁杆组件150移动过程中，其实现与泵门200上的锁扣机构锁定和解锁，从而使泵门200和泵主体100锁定和解锁。
通常的锁杆驱动机构160采用电机，该电机传动丝杆，丝杆驱动配套的螺母，螺母连接锁杆组件150的锁杆，锁杆跟随螺母一起平移来实现与泵门200上锁扣的锁定和解锁，从而实现输液泵的泵门200的开与关。由于锁杆开关门的力较大及锁杆负载较大，传统的方法是将螺母直接刚性固定在锁杆上。当锁杆运动方向不能跟丝杆保持平行时，螺母和丝杆配合就产生了力矩，导致电机要输出更大的力矩才能驱动锁杆移动。锁杆在实际的运动过程中，很难保证与丝杆平行，这种刚性连接方式会对螺母丝杆产生力矩。如果电机扭矩余量不够，就会出现卡顿，开关门不顺的情况；如果电机扭矩余量过大，则会增加系统功耗，同时导致电机体积加大，不便设备小型化。
对此，一种实施例中，锁杆驱动机构160具有驱动件和与驱动件传动连接的输出件。锁杆组件150以可转动的方式安装在输出件上，输出件带动锁杆组件150沿水平面内的第一轴线做往复直线运动，以使锁杆组件150与锁扣锁定或者与锁扣解锁。第一轴线过输出件的轴心，例如图11和12所示，一种实施例中，输出件为丝杆螺母传动机构的螺母163，该第一轴线过该螺母163的轴心，即与螺母163所配对的丝杆162的中心轴线重合。当然，该输出件也可能为其他部件，例如气缸、液缸中的活塞杆，此时该第一轴线与活塞杆的中心轴线重合。锁杆组件150相对输出件的转动中心线与第一轴线位于同一水平面内，且与第一轴线垂直。
锁杆组件150以可转动的方式安装在输出件上，锁杆组件150相对输出件转动的转动中心线与第一轴线位于同一水平面内且与第一轴线垂直。当锁杆组件150受外力倾斜一定角度时，锁杆组件150可相对输出件转动，以通过这种转动连接方式自行调整与输出件的轴心配合结构，不会带动输出件绕该转动中心线偏转，锁杆组件150向输出件的反作用力不会向输出件产生偏离其中心的力矩，可避免输出件发生偏转，进而不会导致输出件对驱动输出件的部件（例如后文中的丝杆162或其他实施例中的活塞缸等）造成偏心力矩，最终避免由于输出件偏转而导致的一系列问题。
进一步地，输出件与锁杆组件150之间为线接触和/或点接触，线接触的接触位置和/或点接触的接触位置对称分布在第一轴线的两侧且与第一轴线位于同一个水平面内，输出件与锁杆组件150之间接触位置的连线与第一轴线垂直。
该驱动机构可选择但不限于电机传动结构，例如，如前文所示，其也可以采用气缸、液缸，甚至还可以采用电磁铁等其他能够输出往复直线运动的结构。
请参考图11至12，一种实施例中，该驱动机构包括丝杆螺母传动机构，驱动件为电机161，丝杆螺母传动机构中的螺母163作为输出件，锁杆组件150安装在螺母163上，电机161驱动丝杆螺母传动机构中的丝杆162，从而带动螺母163以及锁杆组件150进行移动，第一轴线与丝杆螺母传动机构中丝杆162的中心轴线重合。
进一步地，作为一种可转动连接的示例，一种实施例中，螺母163和锁杆组件150中至少一个具有凸起1631，另一个具有与凸起1631对应的卡口1521，卡口1521可转动地套在凸起1631外壁上，卡口1521的内壁与凸起1631的外壁线接触。在图11和12所示结构中，螺母163两侧分别设有凸起1631，锁杆组件150对应凸起1631设置有卡口1521。
为了保证线接触，一种实施例中，卡口1521的内壁和凸起1631的外壁中至少一个具有弧形壁体。请参考图11至12，该凸起1631采用圆柱体形状，其弧形外壁与卡口1521内壁之间线接触。当然，其他某些实施例中，该凸起1631也可仅将与卡口1521内壁接触的部分设置为弧形壁体，其他不接触部分可适应性选择其他形状。此外，也可将卡口1521的内壁设置为具有弧形壁体，而凸起1631可以设置为弧形壁体，也可设置为其他形状，例如平面，从而实现两者的线接触。某些实施例中，该卡口1521也可以采用圆形孔，凸起1631采用圆轴，这样两者都具有弧形壁体。此时，该卡口1521略大于凸起1631，使得凸起1631在卡口1521内能够活动，以便使锁杆组件150受力后，在螺母163上自动调整位置。
除了上述线接触外，输出件与锁杆组件150也可能采用点接触的方式，例如输出件和锁杆组件150上接触部位均设置为球体状，形成球与球对接的形式，从而形成点接触。该点接触位置对称分布在第一轴线的两侧，且所有接触点的连线与第一轴线位于同一水平面，并与第一轴线垂直。
请参考图11至12，一种实施例中，卡口1521具有U形开口，U形卡口1521卡套在凸起1631上。
请参考图13，一种实施例，该丝杆162具有矩形的轮齿1621。该矩形轮齿1621的传递效率较三角牙、梯形牙更高，可提高丝杆162与螺母163之间的传动效率。
请参考图11，一种实施例中，电机161通过齿轮传动机构164与丝杆螺母传动机构的丝杆162传动连接。在其他实施例中，其也可采用带轮机构、链轮机构等方式来进行运动的传递。
进一步地，锁杆组件150与锁扣组件220扣合，因此，锁扣组件220中具有带有钩部的锁扣，对应的该锁杆组件150具有用于与锁扣配合的扣合部。请参考图11和12，一种实施例中，锁杆组件150包括锁杆151和连接件152，扣合部设置在锁杆151上。锁杆151与连接件152连接，连接件152与输出件（如螺母163）可转动地连接，使输出件带动连接件152以及锁杆151运动。上述锁杆组件150中与输出件连接的结构可具体设置在该连接件152上。该锁杆151和连接件152可以固定连接或一体成型。连接件152与锁杆151之间可采用各种方式来实现固定连接，例如包括但不限于螺钉紧固、卡接、焊接、粘接等方式。
请参考图14，一种实施例中，该扣合部具有卡扣1511，该卡扣1511为勾状结构。该卡扣1511具有用以与对应锁扣组件220接触并扣住锁扣组件220的扣合面1512。请结合图6和8，当泵门200和泵主体100需要锁定时，该锁扣组件220先移动到该卡扣1511的入口处，此后由锁杆驱动机构160带动锁杆151向锁定位移动，如图8所示视角中，锁杆151自右向左移动为向锁定位移动。该扣合面1512为斜面，因此将带动锁扣组件220逐渐靠近锁杆151所在一侧，最终卡入到该卡扣1511的沟槽内。当需要解锁时，由锁杆驱动机构160带动锁杆151向解锁位移动，如图8所示视角中，锁杆151自左向右移动，进而释放锁扣组件220，此时可打开泵门200。
由于在锁定过程中，阻碍泵门200向泵体移动的阻力主要来自于输液管300被挤压后对锁扣组件220的反作用力，该锁扣组件220需要克服该反作用力，向锁杆151所在一侧移动一定的距离。如果扣合面1512的斜度过小，则必须将扣合面1512设置的非常长，才能将锁扣组件220拉到位，这将导致整个输液泵的体积过大，不利于紧凑性设计。而如果扣合面1512的斜度过大，则在卡扣1511将锁扣组件220向锁杆151一侧拉动时，卡扣1511将会受到来自锁扣组件220的更大（相对斜度过小这种情况）的作用力。为了克服该作用力，锁杆驱动机构160需要输出更大的驱动力，增加驱动件（例如电机161）的负载，这将造成锁杆驱动机构160的成本增加。
针对这一问题，请参考图14，本申请一种实施例中，扣合面1512具有第一斜面1513和与第二斜面1514，第一斜面1513设置在扣合面1512的外端，第二斜面1514与第一斜面1513向内的一端连接，第一斜面1513的倾斜角度A1大于第二斜面1514的倾斜角度A2。
当需要将泵门200与泵体锁定时，先将泵门200移动到卡扣1511的开口处，然后驱动锁杆151向锁定位移动。卡扣1511上第一斜面1513首先与锁扣组件220接触，在这一阶段，该泵门200只是轻微挤压输液管300，来自于输液管300的反作用力并不大，因此可以将该第一斜面1513的倾斜角度A1设置的较大，快速将锁扣组件220拉进一段距离，这并不会造成驱动件负载过大。当锁扣组件220顺着第一斜面1513滑至第二斜面1514时，此时输液管300已被挤压到一定程度，因此其对泵门200以及锁扣组件220的反作用力增大，此时，由于第二斜面1514的斜度小于第一斜面1513的斜度，因此在拉动锁扣组件220的过程中，依然不会对驱动件造成过大负载。最终，锁扣经第二斜面1514后，滑动到卡扣1511的沟槽内，完成锁定。
该第一斜面1513斜度较大，可以迅速将锁扣组件220以及泵门200拉到一定位置，然后再接着通过第二斜面1514缓慢拉动锁扣组件220。这种组合结构中可减少锁扣组件220在扣合面1512上的行程，因此锁杆151不用做的过长，有利于装置的紧凑性，而且还可降低驱动件（如电机161）的负载，避免造成驱动件损坏，也可降低锁杆驱动机构160的成本。
请参考图11和12，一种实施例中，该锁杆151为长条形片状结构，扣合部为至少两个，其设置在锁杆151朝向对应锁扣的一侧。请参考图5，图中所示卡扣1511为三个，其以相同间隔距离设置在锁杆151上。对应的锁扣也设置了三个，并与该卡扣1511位置对应。
以上应用了具体个例对本申请进行阐述，只是用于帮助理解本申请，并不用以限制本申请。对于本领域的一般技术人员，依据本申请的思想，可以对上述具体实施方式进行变化。

Claims (27)

  1. 一种输液泵,其特征在于，包括泵主体和泵门，所述泵门以可锁定和打开的方式安装在所述泵主体上；
    所述泵主体包括泵主体外壳、控制模块、外部接口组件、电源模块、电池组件、锁杆组件、锁杆驱动机构以及泵体组件，所述泵主体外壳具有安装腔，所述泵主体外壳朝向泵门的一面为前盖，所述前盖具有用于安装输液管的输液管安装结构和用于安装泵体组件的泵主体安装位；所述控制模块、外部接口组件、电源模块、电池组件、锁杆组件、锁杆驱动机构以及泵体组件均安装在所述安装腔内；所述电池组件、泵体组件和锁杆驱动机构并排设置在前盖的后方，所述泵体组件设置在泵主体安装位处，用以挤压所述输液管；所述电池组件和锁杆驱动机构分别设置在所述泵体组件的两侧；所述锁杆组件位于泵体组件和锁杆驱动机构的上方，所述锁杆驱动机构驱动锁杆组件移动，以使所述锁杆组件与泵门锁定和解锁；所述电源模块与外部接口组件并排设置，其中一个位于所述泵体组件的后方，另一个位于所述锁杆驱动机构的后方；
    所述泵门具有门体、锁扣组件和压管组件，所述锁扣组件和压管组件安装在门体上，所述锁扣组件用于与所述锁杆组件锁定，所述压管组件对应泵体组件的位置设置，用于与所述泵体组件一起挤压输液管。
  2. 如权利要求1所述的输液泵，其特征在于，所述泵主体还包括止液组件，按照所述输液管的液体流向，所述前盖以泵体组件为界分为上游区和下游区，所述止液组件位于所述前盖的下游区，并从所述前盖上露出，以便截止输液管内液体流动。
  3. 如权利要求2所述的输液泵，其特征在于，所述止液组件安装在所述锁杆驱动机构与前盖之间的空隙内。
  4. 如权利要求2所述的输液泵，其特征在于，所述泵主体还包括上压力检测组件和下压力检测组件，所述上压力检测组件位于所述前盖的上游区，所述下压力检测组件位于所述前盖的下游区，且位于所述止液组件的上游，所述上压力检测组件和下压力检测组件从所述前盖上露出，以便检测输液管内液体压力；所述门体设置有与所述上压力检测组件对应的上压力检测压块和与下压力检测组件对应的下压力检测压块。
  5. 如权利要求4所述的输液泵，其特征在于，所述上压力检测组件安装在所述电池组件与前盖之间的空隙内。
  6. 如权利要求4所述的输液泵，其特征在于，所述下压力检测组件安装在所述锁杆驱动机构与前盖之间的空隙内。
  7. 如权利要求4所述的输液泵，其特征在于，所述泵主体还包括上超声检测组件和下超声检测组件，所述上超声检测组件位于前盖的上游区，并位于所述上压力检测组件的下游；所述下超声检测组件位于前盖的下游区，并位于所述下压力检测组件的上游；所述上超声检测组件和下超声检测组件从所述前盖上露出，以便检测输液管内的气泡；所述门体设置有与所述上超声检测组件对应的上超声检测压块和与下超声检测组件对应的下超声检测压块。
  8. 如权利要求4所述的输液泵，其特征在于，所述泵主体还包括上超声检测组件和下超声检测组件，所述上超声检测组件位于前盖的上游区，并位于所述上压力检测组件的上游；所述下超声检测组件位于前盖的下游区，并位于所述下压力检测组件和止液组件之间；所述上超声检测组件和下超声检测组件从所述前盖上露出，以便检测输液管内的气泡；所述门体设置有与所述上超声检测组件对应的上超声检测压块和与下超声检测组件对应的下超声检测压块。
  9. 如权利要求7或8所述的输液泵，其特征在于，所述上超声检测组件安装在所述电池组件与前盖之间的空隙内。
  10. 如权利要求7或8所述的输液泵，其特征在于，所述下超声检测组件安装在所述锁杆驱动机构与前盖之间的空隙内。
  11. 如权利要求7或8所述的输液泵，其特征在于，所述泵主体还包括上管在位检测组件和下管在位检测组件，所述上管在位检测组件位于前盖的上游区，并位于所述上压力检测组件和上超声检测组件的上游；所述下管在位检测组件位于前盖的下游区，并位于所述止液组件的下游；所述上管在位检测组件和下管在位检测组件从所述前盖上露出，以便检测输液管是否安装到位。
  12. 如权利要求11所述的输液泵，其特征在于，所述上管在位检测组件安装在所述电池组件与前盖之间的空隙内。
  13. 如权利要求11所述的输液泵，其特征在于，所述下管在位检测组件安装在所述前盖的后侧，并位于所述锁杆驱动机构的外侧。
  14. 如权利要求11所述的输液泵，其特征在于，所述上管在位检测组件和下管在位检测组件分别设置在前盖两侧的最外端。
  15. 如权利要求11所述的输液泵，其特征在于，所述泵主体还包括滴数传感器，其设置在所述上管在位检测组件的后方。
  16. 如权利要求1-15任一项所述的输液泵，其特征在于，所述泵主体外壳至少部分为采用金属材料制成的第一金属安装座，所述泵体组件、锁杆组件以及锁杆驱动机构安装在所述第一金属安装座上；所述泵门的门体至少部分为采用金属材料制成的第二金属安装座，所述压管和锁扣组件安装在所述第二金属安装座上；
    所述第一金属安装座的一端与所述第二金属安装座转动连接，使所述门体相对泵主体转动；在所述第二金属安装座的运动轨迹上具有锁定位和解锁位；在所述锁定位上，所述锁杆组件与所述锁扣组件锁定，所述压管组件与泵体组件位于输液管的两侧，所述泵体组件启动时挤压输液管，以便进行输液；在所述解锁位上，所述锁杆组件与所述锁扣组件解锁，使得所述压管组件能够从输液管的一侧移开，释放所述输液。
  17. 如权利要求1-15任一项所述的输液泵，其特征在于，所述泵主体还包括第一金属安装座，所述第一金属安装座安装在所述泵主体外壳内，所述泵体组件、锁杆组件以及锁杆驱动机构安装在所述第一金属安装座上；所述泵门包括第二金属安装座，所述第二金属安装座设置在所述门体内，所述压管组件和锁扣组件安装在所述第二金属安装座上；
    所述第一金属安装座一端与所述第二金属安装座转动连接，使所述门体相对泵主体转动；在所述第二金属安装座的运动轨迹上具有锁定位和解锁位；在所述锁定位上，所述锁杆组件与所述锁扣组件锁定，所述压管组件与泵体组件位于输液管的两侧，所述泵体组件启动时挤压输液管，以便进行输液；在所述解锁位上，所述锁杆组件与所述锁扣组件解锁，使得所述压管组件能够从输液管的一侧移开，释放所述输液管。
  18. 如权利要求16或17所述的输液泵，其特征在于，所述第一金属安装座包括上金属件和下金属件，所述泵体组件固定安装在所述下金属件或上金属件上，所述锁杆组件可移动的安装在上金属件上，所述上金属件固定安装在下金属件上，所述第二金属安装座与所述下金属件铰接。
  19. 如权利要求18所述的输液泵，其特征在于，所述下金属件大致为U形结构，所述上金属件大致为倒U形结构，所述上金属件与下金属件对接并通过金属件固定连接。
  20. 如权利要求16-19任一项所述的输液泵，其特征在于，所述锁杆驱动机构具有驱动件和与驱动件传动连接的输出件，所述锁杆组件以可转动的方式安装在所述输出件上，所述输出件带动所述锁杆组件沿水平面内的第一轴线做往复直线运动，以使所述锁杆组件与所述锁扣锁定或者与所述锁扣解锁；所述第一轴线过所述输出件的轴心中心；所述锁杆组件相对输出件转动中心线与所述第一轴线位于同一水平面内且与所述第一轴线垂直。
  21. 如权利要求20所述的输液泵，其特征在于，所述输出件与锁杆组件之间为线接触和/或点接触，所述线接触的接触位置和/或点接触的接触位置对称分布在所述第一轴线的两侧且与所述第一轴线位于同一个水平面内，所述输出件与锁杆组件之间接触位置的连线与所述第一轴线垂直。
  22. 如权利要求21所述的输液泵，其特征在于，所述驱动机构包括丝杆螺母传动机构，所述驱动件为电机，所述丝杆螺母传动机构中的螺母作为所述输出件，所述锁杆组件安装在所述螺母上，所述电机驱动所述丝杆螺母传动机构中的丝杆，从而带动所述螺母以及锁杆组件进行移动，所述第一轴线与所述丝杆螺母传动机构中丝杆的中心轴线重合。
  23. 如权利要求22所述的输液泵，其特征在于，所述螺母两侧分别设有凸起，所述锁杆组件对应所述凸起设置有卡口，所述卡口套在所述凸起外壁上，所述卡口的内壁与所述凸起的外壁线接触。
  24. 如权利要求23所述的输液泵，其特征在于，所述卡口具有U形开口，所述U形卡口卡套在所述凸起上。
  25. 如权利要求20所述的输液泵，其特征在于，所述锁杆组件具有卡扣，所述卡扣具有用以与对应锁扣组件接触并扣住所述锁扣组件的扣合面，所述扣合面具有第一斜面和第二斜面，所述第一斜面设置在所述扣合面的外端，所述第二斜面与第一斜面向内的一端连接，所述第一斜面的倾斜角度大于第二斜面的倾斜角度。
  26. 如权利要求25所述的输液泵，其特征在于，所述锁杆组件包括锁杆和连接件，所述锁杆具有所述卡扣，所述锁杆与所述连接件连接，所述连接件与所述输出件可转动的连接，使所述输出件带动连接件以及锁杆运动。
  27. 如权利要求16-26任一项所述的输液泵，其特征在于，所述泵体组件包括泵安装座、蠕动泵以及弹性件，所述泵安装座固定安装在第一金属安装座上，所述蠕动泵安装在所述泵安装座上，所述弹性件作用于蠕动泵以及第一金属安装座之间，向蠕动泵提供一个驱动蠕动泵朝压管组件方向移动的弹性回复力。
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