Drug delivery device for anesthesiology department

Abstract

The utility model discloses a dosing device for the anesthesiology department. The dosing device comprises a pump body, a limiting mechanism and an injector, the limiting mechanism is installed on the pump body, and the limiting mechanism is matched with the injector and a propelling device of the pump body; when the injector is mounted, the limiting mechanism is suitable for locking the injector under the extrusion fit of the injector; when the injector finishes dosing, the limiting mechanism is suitable for being driven by the propelling device to unlock the injector. The device has the beneficial effects that the limiting mechanism is arranged, the limiting mechanism is linked with the mounting and propelling device of the injector, then automatic mounting and loosening of the injector are achieved, manual operation of medical staff is not needed, the operation steps are greatly reduced, the process is simplified, and meanwhile the continuous dosing speed is increased.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a drug delivery device for anesthesiology. Background Art

[0002] Micro-injection pump (abbreviated as micro-pump) is a new type of pumping instrument that can accurately, micro-quantitatively, evenly and continuously output a small amount of fluid; it is composed of a controller, an actuator and a syringe. The micro-injection pump for anesthesia can ensure that the patient can receive real-time, effective and precise quantitative anesthesia according to the needs during the anesthesia process, which can greatly reduce the burden and operation difficulty of medical staff.

[0003] In the process of micro-pump anesthesia injection, the syringe containing the drug needs to be fixed by limiting the position: put the syringe into the card slot on the instrument, and then turn the limit handle to abut against the syringe to achieve the fixation of the syringe. There is such a shortcoming in the process of fixing the syringe: the limit handle needs to be turned every time the syringe is fixed and released. If multiple drugs need to be injected continuously, the process will be cumbersome, which will affect the drug delivery rate. Therefore, a drug delivery device for anesthesia department is proposed to solve the above technical problems. Utility Model Content

[0004] One of the purposes of the present application is to provide a drug delivery device for anesthesiology.

[0005] In order to achieve the above objectives, the technical solution adopted in the present application is: a drug delivery device for anesthesiology, comprising a pump body, a limiting mechanism and a syringe, wherein the limiting mechanism is installed on the pump body, and the limiting mechanism cooperates with the syringe and the propulsion device of the pump body; when the syringe is installed, the limiting mechanism is suitable for locking the syringe under the squeezing cooperation of the syringe; when the drug delivery of the syringe is completed, the limiting mechanism is suitable for releasing the lock of the syringe under the drive of the propulsion device.

[0006] Preferably, a slot matching the syringe is provided at the top of the pump body, and the limiting mechanism includes a handle, a driving device and a limiting assembly, the handle is elastically rotatably mounted on the top of the pump body, the driving device is installed in the pump body and connected to the handle, and the limiting assembly is installed in the pump body and cooperates with the handle; when the syringe is installed, the driving device is suitable for driving the handle to rotate until it abuts against the outside of the syringe, so that the syringe is locked in the slot, and the handle cooperates with the limiting assembly, so that the handle is limited; when the syringe completes drug administration, the limiting assembly is suitable for disengaging from the handle under the drive of the propulsion device, so that the handle rotates and resets under the action of the elastic force and moves away from the syringe.

[0007] Preferably, the driving device includes an end face cam 1 and an end face cam 2, the end face cam 1 is vertically slidably installed in the pump body through the guide rod in the slot, and the end face cam 2 is rotatably installed in the pump body and connected to the handle through a transmission assembly; when the syringe is installed, the syringe is suitable for driving the end face cam 1 to move axially downward through the guide rod and squeeze the end face cam 2 to rotate axially, and then driving the handle to rotate through the transmission assembly.

[0008] Preferably, the handle is elastically rotatably mounted on the pump body via a rotating shaft, the transmission assembly includes a transmission rod and a rotating wheel, the rotating shaft extends into the pump body and is connected to the rotating wheel, and the two ends of the transmission rod are respectively hinged to the end face cam 2 and the rotating wheel.

[0009] Preferably, the limit assembly includes a limit column, a limit hole and a connecting rod, the limit hole is arranged on the outside of the rotating shaft, the limit column is elastically slidably installed in the pump body and cooperates with the limit hole, and the connecting rod is installed on the limit column and cooperates with the propulsion device; when the limit column cooperates with the limit hole under the action of elastic force, the rotating shaft remains stationary; when the connecting rod is driven by the propulsion device to separate the limit column from the limit hole, the rotating shaft rotates and resets under the action of elastic force.

[0010] Preferably, the rotating shaft cooperates with the rotating wheel through a spline, and the rotating shaft and the pump body are cooperated through a guide structure; when the syringe is installed, the rotating shaft is suitable for rotating axially and moving downward under the drive of the guide structure until it abuts against the syringe.

[0011] Preferably, the guide structure comprises a guide block and an inclined guide groove, the guide block is mounted on the pump body, the guide groove is arranged outside the rotating shaft, and the guide block and the guide groove form a sliding fit.

[0012] Preferably, the handle is slidably mounted on the rotating shaft and cooperates with the rotating shaft via a limiting component; when the sliding adjustment of the handle is completed, the limiting component is suitable for locking the handle.

[0013] Preferably, the limiting component comprises a limiting screw, and the limiting screw cooperates with the handle through a thread; when the handle is locked, the limiting screw is suitable for spiral rotation until it abuts against the outside of the rotating shaft.

[0014] Preferably, an elastic member is provided at the bottom end of the handle; when the handle is matched with the syringe, the elastic member is adapted to be elastically deformed and abut against the syringe.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The utility model provides a limiting mechanism, and the limiting mechanism and the installation and propulsion device of the syringe are linked to achieve automatic installation and release of the syringe, without the need for manual operation by medical personnel, which greatly reduces the steps of operation, simplifies the process, and also improves the rate of continuous drug administration. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the overall structure of the limiting mechanism of the utility model.

[0019] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0020] Figure 4 This is a schematic diagram of the card slot structure of the utility model.

[0021] Figure 5 It is a schematic diagram of the enlarged structure of point B of the utility model.

[0022] Figure 6 It is a schematic diagram of the specific structure of the limiting mechanism of the utility model.

[0023] In the figure: 1. pump body; 2. syringe; 3. propulsion device; 4. slot; 5. limit mechanism; 501. handle; 502. drive device; 5021. end cam 1; 5022. end cam 2; 5023. guide rod; 503. limit assembly; 5031. limit hole; 5032. limit column; 5033. connecting rod; 6. rotating shaft; 7. transmission assembly; 701. transmission rod; 702. rotating wheel; 8. guide structure; 801. guide block; 802. guide groove; 9. limit screw. DETAILED DESCRIPTION

[0024] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0027] One of the preferred embodiments of the present application is as follows: Figures 1 to 6 As shown, a drug delivery device for anesthesiology includes a pump body 1 (microinjection pump), a limiting mechanism 5 and a syringe 2. The limiting mechanism 5 is installed on the pump body 1, and the limiting mechanism 5 cooperates with the syringe 2 and the propulsion device 3 of the pump body 1.

[0028] It can be understood that when performing a drug injection, the syringe 2 containing the drug must first be installed and matched with the pump body 1; when the syringe 2 is installed, the syringe 2 will squeeze the limiting mechanism 5, and the limiting mechanism 5 can move under the action of squeezing and fitting to lock the syringe 2; when the syringe 2 completes the drug administration, the propulsion device 3 on the pump body 1 will push the piston rod of the syringe 2 into place, and at this time the limiting mechanism 5 will release the lock on the syringe 2 under the drive of the propulsion device 3.

[0029] In layman's terms, the limiting mechanism 5 is linked to the installation of the syringe 2 and the propulsion device 3. When the syringe 2 is installed, the limiting mechanism 5 can move and lock the syringe 2 under the squeezing action of the syringe 2; and when the propulsion device 3 completes the injection of the medicine in the syringe 2, the limiting mechanism 5 will release the lock on the syringe 2 under the pushing action of the propulsion device 3. It can be seen that during the installation and release process of the syringe 2, the medical staff does not need to perform manual operation, which greatly reduces the steps of the operation, simplifies the process, and also improves the rate of continuous drug administration.

[0030] One of the embodiments of the present application is as follows: Figure 2 and Figure 3 As shown, a card slot 4 adapted to the syringe 2 is provided at the top of the pump body 1, and the limiting mechanism 5 includes a handle 501, a driving device 502 and a limiting assembly 503. The handle 501 is elastically rotatably mounted on the top of the pump body 1, the driving device 502 is installed in the pump body 1 and connected to the handle 501, and the limiting assembly 503 is installed in the pump body 1 and cooperates with the handle 501.

[0031] Specifically, when installing the syringe 2, first put the syringe 2 into the corresponding slot 4, and the syringe 2 will squeeze the driving device 502, and then the driving device 502 will drive the handle 501 to rotate under its squeezing action until it abuts against the outside of the syringe 2, so that the syringe 2 is locked in the slot 4 (that is, the syringe 2 is limited and fixed). Since the handle 501 is elastically rotatably installed, the handle 501 will rotate and reset under the action of the elastic force after releasing the hand. Therefore, at this time, the handle 501 will cooperate with the limiting component 503 to limit the handle 501.

[0032] When the syringe 2 completes the administration, the propulsion device 3 will push the piston rod of the syringe 2 into place, and the limit assembly 503 will disengage from the handle 501 under the push of the propulsion device 3, so that the handle 501 rotates and resets under the action of elastic force and moves away from the syringe 2, thereby releasing the syringe 2.

[0033] As a further description of the above technical solution: Figure 3 and Figure 6 As shown, the driving device 502 includes an end cam 1 5021 and an end cam 2 5022, and a guide rod 5023 is vertically slidably installed in the slot 4, and the end cam 1 5021 is installed at the bottom end of the guide rod 5023 and is located in the pump body 1, and the end cam 2 5022 is rotatably installed in the pump body 1 and connected to the handle 501 through the transmission assembly 7.

[0034] Specifically, when the syringe 2 is installed, the syringe 2 located in the slot 4 will squeeze the guide rod 5023, and the guide rod 5023 will drive the end cam 1 5021 to move axially downward. At this time, the raised portion of the end cam 1 5021 will squeeze the raised portion of the end cam 2 5022, and then the end cam 2 5022 will rotate axially under the wedge-shaped squeezing cooperation, and then the handle 501 will be driven to rotate through the transmission assembly 7 to achieve the limit locking of the syringe 2.

[0035] The present application does not limit the specific structure of the transmission assembly 7, and only provides a specific structure for reference below:

[0036] The handle 501 is rotatably mounted on the pump body 1 via a rotating shaft 6 and a torsion spring. The transmission assembly 7 includes a transmission rod 701 and a rotating wheel 702. The rotating shaft 6 extends into the pump body 1 and is connected to the rotating wheel 702. The two ends of the transmission rod 701 are hinged to the end face cam 5022 and the rotating wheel 702 respectively.

[0037] Specifically, when the end cam 5022 rotates, the end cam 5022 acts on the transmission rod 701 to rotate, and the transmission rod 701 drives the rotating wheel 702 to rotate, thereby driving the rotating shaft 6 and the handle 501 to rotate. Of course, the transmission component 7 here can also be in the form of sprocket chain transmission, belt transmission and gear transmission, but since the rotation angle of the handle 501 here is not very large, that is, it usually only needs to rotate within a range of 90 degrees, such as Figure 1 As shown, when the handle 501 and the syringe 2 are perpendicular, the syringe 2 is in a limited locking state; when the handle 501 and the syringe 2 are parallel, the syringe 2 is in a loose state. Therefore, it is preferred to use the transmission rod 701 for transmission, which makes the structure simpler and the manufacturing cost low.

[0038] One of the embodiments of the present application is as follows: Figure 3 and Figure 6 As shown, the limiting assembly 503 includes a limiting column 5032, a limiting hole 5031 and a connecting rod 5033. The limiting hole 5031 is arranged on the outside of the rotating shaft 6. The limiting column 5032 is installed in the pump body 1 through spring elastic sliding and cooperates with the limiting hole 5031. The connecting rod 5033 is installed on the limiting column 5032 and cooperates with the propulsion device 3.

[0039] It is understandable that before the syringe 2 is installed, the limiting column 5032 and the limiting hole 5031 are in a misaligned state, but the limiting column 5032 is against the outside of the rotating shaft 6 under the action of elastic force; when the syringe 2 is installed and locked, the rotating shaft 6 will rotate so that the limiting column 5032 and the limiting hole 5031 correspond to each other, and then the limiting column 5032 cooperates with the limiting hole 5031 under the action of elastic force, so that the rotating shaft 6 remains stationary (locked). When the syringe 2 is finished administering the drug, the propulsion device 3 will squeeze and move the connecting rod 5033, so that the limiting column 5032 is separated from the limiting hole 5031 under the squeezing force, and the rotating shaft 6 will rotate and reset under the action of elastic force.

[0040] In order to facilitate a detailed understanding of the limiting mechanism 5, its working principle is described below:

[0041] Before installation, the handle 501 is parallel to the slot 4, and the guide rod 5023 is located in the slot 4; at this time, the syringe 2 is inserted into the corresponding slot 4 and squeezed, and then the guide rod 5023 moves downward under the squeezing action of the syringe 2, and the protrusion of the end face cam 1 5021 at the bottom end of the guide rod 5023 will squeeze the protrusion of the end face cam 2 5022, and then under the wedge-shaped squeezing cooperation, the end face cam 2 5022 will rotate axially, and the end face cam 2 5022 will act on the transmission rod 701 to rotate, and the transmission rod 701 will drive the rotating wheel 702 to rotate, and then drive the rotating shaft 6 and the handle 501 to rotate and resist the syringe 2, at the same time, the limiting column 5032 will correspond to the limiting hole 5031, and then the limiting column 5032 cooperates with the limiting hole 5031 under the action of elastic force, so that the rotating shaft 6 remains stationary, so as to achieve the limiting locking of the syringe 2. When the syringe 2 completes the administration, the propulsion device 3 will squeeze and move the connecting rod 5033, so that the limiting column 5032 is separated from the limiting hole 5031 under the squeezing force, and the rotating shaft 6 will rotate and reset under the action of the elastic force.

[0042] Of course, when the handle 501 is rotated in the opposite direction to loosen, the reaction force of the guide rod 5023 on the end cam 2 5022 will also move upward, and then squeeze the syringe 2 to move upward. If the handle 501 and the outside of the syringe 2 are still in contact with each other, the two will interfere with each other. Therefore, the handle 501 needs to be separated from the syringe 2 when it is rotated, but the contact area between the handle 501 and the syringe 2 will be very small, which will reduce the stability of the limit; and the cooperation between the two must be very extreme and accurate, which will greatly improve the manufacturing accuracy.

[0043] In order to solve the above-mentioned problem, one of the embodiments of the present application is as follows: Figure 5 and Figure 6As shown, the rotating shaft 6 cooperates with the rotating wheel 702 through a spline. It should be known that the axial movement of the rotating shaft 6 will not interfere with the rotating wheel 702, and the rotating shaft 6 and the rotating wheel 702 can rotate synchronously. The rotating shaft 6 and the pump body 1 cooperate through a guide structure 8.

[0044] It is understandable that when the syringe 2 is installed, the rotating shaft 6 can be driven by the guide structure 8 to rotate along the axial direction and move downward until it contacts the syringe 2; similarly, when the syringe 2 is released, the rotating shaft 6 can be driven by the guide structure 8 to rotate in the opposite direction and move upward away from the syringe 2. In this way, whether the syringe 2 is installed or released, the rotation of the handle 501 will not interfere with the movement of the guide rod 5023, thereby improving practicality.

[0045] As a further description of the above technical solution: Figure 5 As shown, the guide structure 8 includes a guide block 801 and an inclined guide groove 802, the guide block 801 is installed on the pump body 1, the guide groove 802 is arranged outside the rotating shaft 6, and the guide block 801 and the guide groove 802 form a sliding fit. It can be understood that when the rotating shaft 6 rotates, the rotating shaft 6 can move axially under the cooperation of the guide block 801 and the guide groove 802.

[0046] It is understandable that when the syringe 2 is installed, the handle 501 will rotate toward the syringe 2 and move downward to be close to the syringe 2; and when the syringe 2 is released, the handle 501 will rotate in the opposite direction and move upward to be away from the syringe 2.

[0047] One of the embodiments of the present application is as follows: Figure 5 As shown, the handle 501 is slidably mounted on the shaft 6 and cooperates with the shaft 6 through a limiting component; that is, the handle 501 can be axially moved and adjusted along the shaft 6 to fit syringes 2 of different sizes. When the sliding adjustment of the handle 501 is completed, the limiting component can lock the handle 501.

[0048] As a further description of the above technical solution: the limiting component includes a limiting screw 9, and the limiting screw 9 is threadedly matched with the handle 501. It should be known that when locking the handle 501, the limiting screw 9 can be spirally rotated until it abuts against the outside of the rotating shaft 6; when adjusting the handle 501, the limiting screw 9 can be spirally rotated in the opposite direction to separate the limiting screw 9 from the rotating shaft 6.

[0049] Furthermore, an elastic member (such as a rubber block) can be provided at the bottom end of the handle 501. When the handle 501 is matched with the syringe 2, the elastic member can be elastically deformed and abut against the syringe 2, thereby ensuring a tight connection between the handle 501 and the syringe 2 and enhancing stability. At the same time, it also reduces the hard friction between the handle 501 and the syringe 2 and prevents damage to the syringe 2.

[0050] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A drug delivery device for anesthesiology, characterized in that: include: A pump body, a limiting mechanism and a syringe, wherein the limiting mechanism is installed on the pump body and cooperates with the syringe and the propulsion device of the pump body; when the syringe is installed, the limiting mechanism is suitable for locking the syringe under the squeeze cooperation of the syringe; when the syringe is finished administering the drug, the limiting mechanism is suitable for unlocking the syringe under the drive of the propulsion device; The top of the pump body is provided with a slot matched with the syringe, and the limiting mechanism includes a handle, a driving device and a limiting assembly. The handle is elastically rotatably mounted on the top of the pump body, the driving device is mounted in the pump body and connected to the handle, and the limiting assembly is mounted in the pump body and cooperates with the handle; when the syringe is installed, the driving device is suitable for driving the handle to rotate until it abuts against the outside of the syringe, so that the syringe is locked in the slot, and the handle cooperates with the limiting assembly, so that the handle is limited; when the syringe is finished administering the drug, the limiting assembly is suitable for disengaging from the handle under the drive of the propulsion device, so that the handle rotates and resets under the action of the elastic force and moves away from the syringe; The driving device comprises an end face cam 1 and an end face cam 2, wherein the end face cam 1 is vertically slidably installed in the pump body through the guide rod in the slot, and the end face cam 2 is rotatably installed in the pump body and connected to the handle through the transmission assembly; when the syringe is installed, the syringe is suitable for driving the end face cam 1 to move downward axially through the guide rod and squeeze the end face cam 2 to rotate axially, and then driving the handle to rotate through the transmission assembly; The handle is elastically rotatably mounted on the pump body through a rotating shaft, and the transmission assembly includes a transmission rod and a rotating wheel. The rotating shaft extends into the pump body and is connected to the rotating wheel. The two ends of the transmission rod are respectively hinged to the end face cam 2 and the rotating wheel. The limit assembly includes a limit column, a limit hole and a connecting rod, the limit hole is arranged on the outside of the rotating shaft, the limit column is elastically slidably installed in the pump body and cooperates with the limit hole, and the connecting rod is installed on the limit column and cooperates with the propulsion device; when the limit column cooperates with the limit hole through the action of elastic force, the rotating shaft remains stationary; when the connecting rod is driven by the propulsion device to separate the limit column from the limit hole, the rotating shaft rotates and resets under the action of elastic force.

2. The drug delivery device for anesthesiology according to claim 1, characterized in that: The rotating shaft cooperates with the rotating wheel through a spline, and the rotating shaft and the pump body cooperate with each other through a guide structure; when the syringe is installed, the rotating shaft is suitable for rotating axially and moving downward under the drive of the guide structure until it abuts against the syringe.

3. The drug delivery device for anesthesiology as claimed in claim 2, characterized in that: The guide structure comprises a guide block and an inclined guide groove, wherein the guide block is mounted on the pump body, the guide groove is arranged outside the rotating shaft, and the guide block and the guide groove form a sliding fit.

4. The drug delivery device for anesthesiology according to claim 1, characterized in that: The handle is slidably mounted on the rotating shaft and cooperates with the rotating shaft through a limiting component; when the sliding adjustment of the handle is completed, the limiting component is suitable for locking the handle.

5. The drug delivery device for anesthesiology as claimed in claim 4, characterized in that: The limiting component includes a limiting screw, and the limiting screw is threadably matched with the handle; when the handle is locked, the limiting screw is suitable for spiral rotation until it abuts against the outer side of the rotating shaft.

6. The drug delivery device for anesthesiology as claimed in claim 5, characterized in that: An elastic member is disposed at the bottom end of the handle; when the handle is matched with the syringe, the elastic member is adapted to be elastically deformed and abut against the syringe.

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