Medical automatic injection pump

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a medical automatic injection pump. Comprising a main machine, a first motor and a first lead screw in transmission connection with the first motor are arranged in the main machine, a sliding block is movably arranged on the first lead screw, and when the first motor drives the first lead screw to rotate, the sliding block moves in the length direction of the first lead screw; the telescopic rod is arranged on the sliding block and extends out of the main machine, and the telescopic rod is of a hollow structure; the handle is connected to the telescopic rod and comprises a handle shell, a second motor is arranged in the handle shell, the second motor is electrically connected to the interior of the main machine through the telescopic rod, two clamping arm assemblies used for clamping an injector push handle are arranged outside the handle shell, and the second motor is in transmission connection with the clamping arm assemblies and used for controlling clamping or opening of the two clamping arm assemblies. According to the utility model, the injector can be quickly mounted and fixed on the handle, the operation is convenient and quick, the working efficiency is improved, and the workload of medical personnel is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a medical automatic injection pump. Background Art

[0002] With the continuous development of medical technology, the number of drug injections in clinical practice has gradually increased, especially the demand for long-term, micro-volume, uniform and accurate injections has increased. The traditional injection method relies on medical staff to manually operate the syringe, which not only increases the workload of medical staff, but also makes it difficult to ensure the accuracy and stability of the injection. Especially for drugs with high viscosity, such as iodized oil, the injection process is more laborious, which places higher demands on the physical strength of medical staff.

[0003] In order to solve these problems, the syringe pump, as an advanced medical device, came into being and is widely used in clinical practice. The syringe pump is usually composed of a main unit, a telescopic rod and a handle. The motor drives the telescopic rod to move, thereby moving the handle of the syringe to complete the automatic injection. This device greatly reduces the workload of medical staff and improves the accuracy and stability of injection.

[0004] However, although the syringe pump has improved work efficiency to a certain extent, it still has some shortcomings in the operation process. Specifically, the handle part of the syringe pump currently on the market usually clamps the push handle of the syringe through a clamping arm. In actual use, medical staff need to manually open the clamping arm first, install the syringe, and then release their hands so that the clamping arm clamps the push handle. This operation method is not only cumbersome, but also inefficient, especially in emergency situations, which may delay treatment.

[0005] Therefore, there is an urgent need for a medical automatic injection pump that is easy to operate and can improve work efficiency. Utility Model Content

[0006] The utility model aims to provide a medical automatic injection pump to address the deficiencies of the prior art, which realizes the rapid installation and fixation of the syringe on the handle, is convenient and quick to operate, improves work efficiency, and reduces the workload of medical staff.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A medical automatic injection pump, comprising:

[0009] A host, wherein a first motor and a first screw rod connected to the first motor are provided in the host, a sliding block is movably provided on the first screw rod, and when the first motor drives the first screw rod to rotate, the sliding block moves along the length direction of the first screw rod;

[0010] A telescopic rod disposed on the sliding block and extending outside the main body. The telescopic rod has a hollow structure.

[0011] A handle connected to the telescopic rod. The handle includes a handle housing. A second motor is provided inside the handle housing. The second motor is electrically connected to the inside of the main body through the telescopic rod. Two clamping arm assemblies for clamping the syringe plunger are provided outside the handle housing. The second motor is in transmission connection with the clamping arm assemblies for controlling the clamping or opening of the two clamping arm assemblies.

[0012] Further, the handle further includes a bracket disposed inside the handle housing. A push block in transmission connection with the clamping arm assemblies is provided on the bracket. A second lead screw is provided on the output shaft of the second motor. The second lead screw is connected to the push block. When the second motor drives the second lead screw to rotate, the push block will move along the length direction of the second lead screw.

[0013] Further, the clamping arm assemblies are in transmission connection with the push block through guide blocks. An activity groove is provided on the push block. An activity lug installed in the activity groove is provided on the guide block. A spring is connected to the guide block. The spring is used to make the clamping arm assemblies tend to be in a clamping state. When the clamping arm assemblies are opened by an external force, the activity lug moves in the activity groove and compresses the spring.

[0014] Further, a first reset baffle is provided on the bracket. The first reset baffle passes through the activity groove from bottom to top. A second reset baffle is provided on the guide block. The spring is connected between the first reset baffle and the second reset baffle.

[0015] Further, the clamping arm assemblies include clamping arms disposed outside the handle housing and connecting sections. The connecting sections pass through the handle housing and are connected to the inside of the handle. A linkage piece is further provided at one end of the connecting section located inside the handle. The linkage piece is connected to the guide block. The guide block makes the clamping arms approach or move away from each other by driving the linkage piece and the connecting sections.

[0016] Further, a lead screw clamp for clamping the first lead screw is provided inside the sliding block. A third motor is provided near the lead screw clamp. The third motor is used to drive the lead screw clamp to clamp or open the first lead screw.

[0017] Further, a worm is connected to the output shaft of the third motor. A gear is engaged with the worm. The gear is in transmission connection with the lead screw clamp.

[0018] Further, the screw rod clamp includes a first screw rod clamp arm and a second screw rod clamp arm. A tension spring is connected between the first screw rod clamp arm and the second screw rod clamp arm. A cam is provided on the gear. When the gear rotates, the cam will push the first screw rod clamp arm and the second screw rod clamp arm to open against the tension of the tension spring.

[0019] Further, a guide rail parallel to the first screw rod is provided in the main body, and the sliding block is connected to the guide rail.

[0020] Further, a sensor is provided in the main body for detecting the distance from the sliding block.

[0021] Advantages of the present utility model:

[0022] By providing the first motor in the present utility model, the sliding block is driven to move, so as to realize the telescopic movement of the telescopic rod and the movement of the handle. By providing a second motor in the handle and connecting it to the clamping arm assembly, the syringe can be quickly installed and fixed on the handle. By providing a pushing block and a guiding block, the transmission between the second motor and the clamping arm assembly is realized. By providing a movable groove on the pushing block, a movable convex block and a spring on the guiding block, the clamping and opening of the clamping arm assembly support both automatic and manual modes. By providing a third motor to drive the screw rod clamp to clamp the first screw rod, the telescopic movement of the telescopic rod supports both automatic and manual modes. By providing a sensor, it is convenient to detect whether the sliding block slides in place. The present utility model realizes the quick installation and fixation of the syringe on the handle, is convenient and fast to operate, improves the work efficiency, and reduces the work burden of medical staff. Description of the Drawings

[0023] Att Figure 1 is a schematic structural view of the injection pump of the present utility model;

[0024] Att Figure 2 is a schematic internal structural view of the injection pump of the present utility model;

[0025] Att Figure 3 is a schematic structural view of the handle of the present utility model;

[0026] Att Figure 4 is an exploded structural view of the handle of the present utility model;

[0027] Att Figure 5 is a schematic structural view of the pushing block and the guiding block of the present utility model;

[0028] Att Figure 6 is a schematic structural view of the sliding block of the present utility model;

[0029] Identifications in the figure: 1 - main machine, 110 - first motor, 120 - first lead screw, 130 - sliding block, 131 - lead screw clamp, 1311 - first lead screw clamp arm, 1312 - second lead screw clamp arm, 1313 - tension spring, 132 - third motor, 133 - worm, 134 - gear, 1341 - cam, 140 - guide rail, 150 - inductor; 2 - telescopic rod; 3 - handle, 310 - handle housing, 320 - second motor, 321 - second lead screw, 330 - clamping arm assembly, 331 - clamping arm, 332 - connecting section, 333 - linkage piece, 340 - bracket, 341 - first reset baffle, 350 - pushing block, 351 - moving slot, 360 - guiding block, 361 - moving convex block, 362 - second reset baffle, 370 - spring. Detailed implementation mode

[0030] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0033] In the embodiments of the present utility model, unless otherwise clearly specified and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] Refer to the attached Figure 1 to the attached Figure 6 , which shows a specific embodiment of a medical automatic syringe pump provided by the present utility model.

[0035] Refer to the attached Figure 1 and the attached Figure 2 , the medical automatic syringe pump includes:

[0036] A main unit 1, in which a first motor 110 and a first lead screw 120 drivingly connected to the first motor 110 are provided. A sliding block 130 is movably arranged on the first lead screw 120. When the first motor 110 drives the first lead screw 120 to rotate, the sliding block 130 moves along the length direction of the first lead screw 120;

[0037] An expansion rod 2 arranged on the sliding block 130 and extending outside the main unit 1, and the expansion rod 2 is a hollow structure;

[0038] A handle 3 connected to the expansion rod 2, the handle 3 includes a handle housing 310, a second motor 320 is provided in the handle housing 310, the second motor 320 is electrically connected to the inside of the main unit 1 through the expansion rod 2, and two clamping arm assemblies 330 for clamping the syringe plunger are provided outside the handle housing 310. The second motor 320 is drivingly connected to the clamping arm assemblies 330 for controlling the clamping or opening of the two clamping arm assemblies 330.

[0039] Refer to the attached Figure 2 , in the above embodiment, a reduction gear set is provided in the main unit 1. The first motor 110 is connected to the first lead screw 120 through the reduction gear set. The first lead screw 120 passes through the sliding block 130. When the first lead screw 120 rotates, the sliding block 130 will slide inside the main unit 1, and the connected expansion rod 2 and handle 3 will also expand and contract. The second motor 320 in the handle 3 is connected to the inside of the main unit 1 in the form of a wire connection through the hollow expansion rod 2, and there is no need to assemble an additional battery. Driven by the second motor 320, the clamping arm assemblies 330 can clamp or open the clamping arms 331, so as to realize the automatic clamping of the syringe plunger.

[0040] Refer to the attached Figure 3 and the attached Figure 4In the above embodiment, the handle 3 further includes a bracket 340 disposed in the handle housing 310, and a push block 350 is provided on the bracket 340 and is transmission-connected to the clamping arm assembly 330. The output shaft of the second motor 320 is provided with a second screw rod 321, and the second screw rod 321 is connected to the push block 350. When the second motor 320 drives the second screw rod 321 to rotate, the push block 350 will move along the length direction of the second screw rod 321. In the embodiment, the second motor 320 is mounted on the bracket 340. When the second motor 320 rotates, the second screw rod 321 rotates, the push block 350 moves forward and backward, and drives the clamping arm assembly 330 to clamp or open the clamping arm 331.

[0041] See attached Figure 3 and attached Figure 5 In the above embodiment, the clamping arm assembly 330 and the push block 350 are connected by transmission through the guide block 360. The push block 350 is provided with a movable groove 351. The guide block 360 is provided with a movable protrusion 361 installed in the movable groove 351. The guide block 360 is connected with a spring 370. The spring 370 is used to make the clamping arm assembly 330 tend to be in a clamping state. When the clamping arm assembly 330 is opened by an external force, the movable protrusion 361 moves in the movable groove 351 and compresses the spring 370. In the embodiment, the spring 370 makes the clamping arm assembly 330 tend to be in a clamping state. Therefore, when the second motor 320 drives the push block 350 to pull back, it is restricted by the movable groove 351, and the push block 350 will pull the movable protrusion 361 and the guide block 360 to move, thereby realizing the automatic opening driven by the second motor 320. When the clamping arm 331 of the clamping arm assembly 330 is in a clamping state and an external force is used to pry open the clamping arm 331 , the push block 350 remains stationary, the guide block 360 moves and causes the movable protrusion 361 to move in the movable groove 351 , thereby manually opening the clamping arm assembly 330 .

[0042] In the above embodiment, the bracket 340 is provided with a first reset baffle 341, the first reset baffle 341 passes through the movable groove 351 from bottom to top, the guide block 360 is provided with a second reset baffle 362, and the spring 370 is connected between the first reset baffle 341 and the second reset baffle 362. In the embodiment, the first reset baffle 341 and the movable protrusion 361 are both located in the movable groove 351, and the first reset baffle 341 provides a force point for the spring 370.

[0043] See attached Figure 3 and attached Figure 4, in the above embodiment, the clamping arm assembly 330 includes a clamping arm 331 disposed outside the handle housing 310 and a connecting section 332. The connecting section 332 passes through the handle housing 310 and is connected to the inside of the handle 3. A linkage piece 333 is further provided at one end of the connecting section 332 located inside the handle 3. The linkage piece 333 is connected to the guide block 360. The guide block 360 drives the clamping arms 331 to approach or separate from each other by driving the linkage piece 333 and the connecting section 332. In the embodiment, when the second motor 320 rotates, the pushing block 350 and the guide block 360 move back and forth. The guide block 360 drives the linkage piece 333 to rotate about the connecting section 332 as an axis. The connecting section 332 rotates itself and causes the clamping arms 331 to rotate. The ends of the two clamping arms 331 approach or separate from each other during rotation, thereby realizing the clamping and separation of the clamping arms 331.

[0044] Refer to the appendix Figure 6 , in the above embodiment, a lead screw clamp 131 for clamping the first lead screw 120 is provided inside the sliding block 130. A third motor 132 is disposed near the lead screw clamp 131. The third motor 132 is used to drive the lead screw clamp 131 to clamp or open the first lead screw 120. In the embodiment, when the lead screw clamp 131 clamps the first lead screw 120 and meshes with the first lead screw 120, if the first lead screw 120 rotates, the sliding block 130 can move along the length direction of the first lead screw 120; when the lead screw clamp 131 releases the first lead screw 120, the transmission connection state between the first lead screw 120 and the sliding block 130 is released. At this time, the user can manually push and pull the handle 3 to realize the manual telescoping of the telescopic rod 2.

[0045] Refer to the appendix Figure 6 , in the above embodiment, the output shaft of the third motor 132 is connected with a worm 133. A gear 134 is meshed with the worm 133. The gear 134 is in transmission connection with the lead screw clamp 131. The lead screw clamp 131 includes a first lead screw clamp arm 1311 and a second lead screw clamp arm 1312. A tension spring 1313 is connected between the first lead screw clamp arm 1311 and the second lead screw clamp arm 1312. A cam 1341 is provided on the gear 134. When the gear 134 rotates, the cam 1341 will push the first lead screw clamp arm 1311 and the second lead screw clamp arm 1312 to open against the tension of the tension spring 1313. In the embodiment, when the third motor 132 rotates, the worm 133 rotates, the meshed gear 134 rotates, the cam 1341 on the gear 134 rotates and the protruding part pushes the first lead screw clamp arm 1311 and the second lead screw clamp arm to open. The tension spring 1313 is stretched, and the lead screw clamp 131 releases the biting state with the first lead screw 120.

[0046] Refer to the appendix Figure 2, in the above embodiment, a guide rail 140 parallel to the first lead screw 120 is provided inside the main body 1, and the sliding block 130 is connected to the guide rail 140. In the embodiment, the guide rail 140 enables the sliding block 130 to move only along the guide rail 140, improving the stability of the sliding block 130 during movement.

[0047] Refer to the appendix Figure 2 , in the above embodiment, a sensor 150 is provided inside the main body 1 for detecting the distance from the sliding block 130. In the embodiment, the sensor 150 is used to detect whether the sliding block 130 slides in place, facilitating the control of the rotation of the first motor 110.

[0048] In summary, the present embodiment provides a medical automatic syringe pump. By setting the first motor 110, the driving of the sliding block 130 to move realizes the telescopic movement of the telescopic rod 2 and the movement of the handle 3. By setting a second motor 320 inside the handle 3 and connecting it to the clamping arm assembly 330, the rapid installation and fixation of the syringe on the handle 3 are realized; by setting the pushing block 350 and the guiding block 360, the transmission between the second motor 320 and the clamping arm assembly 330 is realized; by setting an activity groove 351 on the pushing block 350, an activity bump 361 and a spring 370 on the guiding block 360, the clamping and opening of the clamping arm assembly 330 support both automatic and manual modes; by setting a third motor 132 to drive the screw clamp 131 to clamp the first lead screw 120, the telescopic movement of the telescopic rod 2 supports both automatic and manual modes; by setting the sensor 150, it is convenient to detect whether the sliding block 130 slides in place; the present embodiment realizes the rapid installation and fixation of the syringe on the handle 3, with convenient and fast operation, improving work efficiency and reducing the workload of medical staff.

[0049] The above-described embodiment is only one of the more preferred specific embodiments of the present invention. Ordinary changes and substitutions made by technicians in the technical scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A medical automatic syringe pump, characterized in that, Comprising: A main body (1), in which a first motor (110) and a first lead screw (120) drivingly connected to the first motor (110) are provided. A sliding block (130) is movably arranged on the first lead screw (120). When the first motor (110) drives the first lead screw (120) to rotate, the sliding block (130) moves along the length direction of the first lead screw (120). An expansion rod (2) arranged on the sliding block (130) and extending outside the main body (1), and the expansion rod (2) is of a hollow structure. A handle (3) connected to the expansion rod (2), the handle (3) includes a handle housing (310). A second motor (320) is provided in the handle housing (310). The second motor (320) is electrically connected to the inside of the main body (1) through the expansion rod (2). Two clamping arm assemblies (330) for clamping the syringe push rod are provided outside the handle housing (310). The second motor (320) is drivingly connected to the clamping arm assemblies (330) for controlling the clamping or opening of the two clamping arm assemblies (330).

2. The medical automatic syringe pump according to claim 1, characterized in that, The handle (3) further includes a bracket (340) provided in the handle housing (310). A pushing block (350) drivingly connected to the clamping arm assemblies (330) is provided on the bracket (340). A second lead screw (321) is provided on the output shaft of the second motor (320). The second lead screw (321) is connected to the pushing block (350). When the second motor (320) drives the second lead screw (321) to rotate, the pushing block (350) will move along the length direction of the second lead screw (321).

3. The medical automatic injector pump according to claim 2, characterized in that, The clamping arm assemblies (330) are drivingly connected to the pushing block (350) through a guiding block (360). An activity groove (351) is provided on the pushing block (350). An activity bump (361) installed in the activity groove (351) is provided on the guiding block (360). A spring (370) is connected to the guiding block (360). The spring (370) is used to make the clamping arm assemblies (330) tend to be in a clamping state. When the clamping arm assemblies (330) are opened by an external force, the activity bump (361) moves in the activity groove (351) and compresses the spring (370).

4. The medical automatic syringe pump according to claim 3, wherein, A first reset baffle (341) is provided on the bracket (340). The first reset baffle (341) passes through the activity groove (351) from bottom to top. A second reset baffle (362) is provided on the guiding block (360). The spring (370) is connected between the first reset baffle (341) and the second reset baffle (362).

5. The medical automatic syringe pump according to claim 3, characterized in that, The clamping arm assembly (330) includes a clamping arm (331) and a connecting section (332) disposed outside the handle housing (310). The connecting section (332) passes through the handle housing (310) and is connected to the inside of the handle (3). One end of the connecting section (332) located inside the handle (3) is further provided with a linkage piece (333). The linkage piece (333) is connected to the guide block (360). The guide block (360) makes the clamping arms (331) approach or move away from each other by driving the linkage piece (333) and the connecting section (332).

6. A medical automatic syringe pump according to any one of claims 1-5, characterized in that, A screw clamp (131) for clamping the first lead screw (120) is provided inside the sliding block (130). A third motor (132) is disposed near the screw clamp (131). The third motor (132) is used to drive the screw clamp (131) to clamp or open the first lead screw (120).

7. The medical automatic syringe pump according to claim 6, characterized in that, An output shaft of the third motor (132) is connected with a worm (133). A gear (134) is engaged with the worm (133). The gear (134) is in transmission connection with the screw clamp (131).

8. A medical automatic syringe pump according to claim 7, wherein, The screw clamp (131) includes a first screw clamp arm (1311) and a second screw clamp arm (1312). A tension spring (1313) is connected between the first screw clamp arm (1311) and the second screw clamp arm (1312). A cam (1341) is provided on the gear (134). When the gear (134) rotates, the cam (1341) will push the first screw clamp arm (1311) and the second screw clamp arm (1312) to open against the tension of the tension spring (1313).

9. The medical automatic syringe pump according to claim 1, characterized in that, A guide rail (140) parallel to the first lead screw (120) is provided inside the main body (1). The sliding block (130) is connected to the guide rail (140).

10. A medical automatic syringe pump according to claim 1, characterized in that, An inductor (150) is provided inside the main body (1) for detecting the distance from the sliding block (130).

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