Stepping motor for detecting body fluid through medical injection

Abstract

The utility model discloses a stepping motor for detecting body fluid in medical injection. The stepping motor comprises a fixed bracket and a stepping motor, a shell of the stepping motor is fixedly installed on the fixed bracket, and a rotor of the stepping motor is provided with a screw extending forwards. The fixed bracket is linearly and slidably provided with a movable deflector rod, the movable deflector rod is provided with a screw joint part and a needle tube clamping part, and the screw joint part of the movable deflector rod is in threaded connection with the screw rod; textures formed by sequentially spacing black and white stripes are silk-printed on the surface of the movable deflector rod, and the black and white stripes in the textures are sequentially arranged at intervals along the moving direction of the movable deflector rod. Through the structural design, the stepping motor for detecting body fluid in medical injection has the advantages of novel design, simple structure and high needle movement control precision.

Description

Technical Field

[0001] The utility model relates to the technical field of motor drivers, in particular to a stepping motor used for medical injection detection of body fluids. Background Art

[0002] The patent number is: ZL202122078770.6, and the patent name is: A Chinese utility model patent for a fully automatic intelligent medical anti-struggle injection device, which discloses a needle mechanism; specifically, the needle mechanism includes a support frame, an air pump, a suction cup and a sliding mechanism, the sliding mechanism includes a gear guide and a first motor, the first motor is slidably mounted on the gear guide, and there is a rack on the gear guide that is meshed with a gear connected to the driving end of the first motor, the needle tube is detachably fixedly connected to the first motor, and the rotation of the first motor makes The first motor and the needle tube move along the guide rail, and the needle tip of the needle tube points to the injection port position; specifically, the first motor is a dual-axis motor with rotating shafts at both ends, and gears that match the gear guide rails are installed at both ends; in addition, the sliding mechanism also includes a laser rangefinder, which is installed at one end of the sliding mechanism close to the injection port. The laser rangefinder can measure the distance from the needle tip of the needle tube to the surface of human skin, and then feed back to the movement of the sliding mechanism, thereby ensuring that the needle tube is pushed into the appropriate position for injection (i.e., controlling the needle insertion depth) to effectively protect personal safety.

[0003] It should be pointed out that the needle mechanism for driving the needle to move has the following defects, specifically:

[0004] Defect 1. In the process of driving the needle to move, the first motor starts and drives the gear to rotate, and the rotating gear moves along the rack; the transmission pair structure composed of the above gear and rack has the defect of low motion accuracy, which will affect the accuracy of the needle insertion depth;

[0005] Defect 2: The sliding mechanism includes two racks, two gears matched with the corresponding racks, and the first motor is a dual-axis motor, and the overall structure is complex. Utility Model Content

[0006] The utility model aims to provide a stepper motor for medical injection and detection of body fluids in view of the deficiencies of the prior art. The stepper motor for medical injection and detection of body fluids has novel design, simple structure and high needle movement control accuracy.

[0007] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions.

[0008] A stepper motor for medical injection detection of body fluids, comprising a fixed bracket and a stepper motor;

[0009] The housing of the stepper motor is fixedly mounted on the fixing bracket, and the rotor of the stepper motor is provided with a screw extending forward;

[0010] The fixed bracket is linearly slidably mounted with a movable lever, the movable lever is provided with a threaded portion and a needle tube clamping portion, and the threaded portion of the movable lever is threadedly connected with the screw rod;

[0011] The surface of the movable lever is silk-screened with a texture formed by sequentially spaced black and white stripes, and the black and white stripes in the texture are sequentially spaced along the moving direction of the movable lever.

[0012] The fixed bracket is provided with a guide rod extending straightly along the front-to-back direction, and the movable lever is provided with a guide hole completely penetrating the front and back corresponding to the guide rod, and the guide rod passes through the guide hole of the movable lever.

[0013] Wherein, the fixed bracket includes a bracket bottom plate, and the bracket bottom plate is provided with a front supporting side plate and a rear supporting side plate, and the front supporting side plate and the rear supporting side plate are opposite to each other front and back and are arranged at intervals;

[0014] The stepper motor is fixedly mounted on the rear support side plate, the front end of the screw rod is connected to the front support side plate through a bearing, and the front end and rear end of the guide rod are respectively connected to the front support side plate and the rear support side plate on the corresponding sides.

[0015] Wherein, the bracket bottom plate is provided with a fastening installation hole.

[0016] Among them, the stepper motor used for medical injection detection of body fluids is equipped with an optical coupler sensor.

[0017] The beneficial effects of the utility model are as follows: the stepper motor used for medical injection and detection of body fluids described in the utility model includes a fixed bracket and a stepper motor; the housing of the stepper motor is fixedly mounted on the fixed bracket, and the rotor of the stepper motor is provided with a screw extending forward; the fixed bracket is linearly slidably mounted with a movable lever, the movable lever is provided with a threaded portion and a needle tube clamping portion, and the threaded portion of the movable lever is threadedly connected to the screw; the surface of the movable lever is silk-screened with a texture formed by black and white stripes spaced in sequence, and the black and white stripes in the texture are spaced in sequence along the moving direction of the movable lever. Through the above structural design, the stepper motor used for medical injection and detection of body fluids of the utility model has the advantages of novel design, simple structure and high needle movement control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the utility model from another perspective.

[0021] Figure 3 It is a cross-sectional schematic diagram of the utility model.

[0022] exist Figures 1 to 3 Included are:

[0023] 1-fixed bracket; 11-bracket bottom plate; 111-fastening mounting hole; 12-front supporting side plate; 13-rear supporting side plate; 2-stepping motor; 3-screw rod; 4-movable lever; 41-screw connection part; 42-needle tube clamping part; 43-texture; 44-guide hole; 5-guide rod; 6-bearing. DETAILED DESCRIPTION

[0024] The present invention will be described below in conjunction with specific implementation methods.

[0025] Embodiment 1, as Figures 1 to 3 As shown, a stepper motor used for medical injection detection of body fluids includes a fixed bracket 1 and a stepper motor 2.

[0026] Among them, Figures 1 to 3 As shown, the housing of the stepper motor 2 is fixedly mounted on the fixing bracket 1 , and the rotor of the stepper motor 2 is provided with a screw rod 3 extending forward.

[0027] Further, such as Figures 1 to 3 As shown, the fixed bracket 1 is linearly slidably mounted with a movable lever 4, the movable lever 4 is provided with a threaded portion 41 and a needle tube clamping portion 42, and the threaded portion 41 of the movable lever 4 is threadedly connected with the screw rod 3.

[0028] Furthermore, Figure 1 and Figure 2 As shown, the surface of the movable lever 4 is screen-printed with a texture 43 formed by sequentially spaced black and white stripes, and the black and white stripes in the texture 43 are sequentially spaced along the moving direction of the movable lever 4 .

[0029] It should be explained that the stepper motor for medical injection and detection of body fluids in the first embodiment of the present invention is applied to a fully automatic injection device, and the fully automatic injection device is used for medical injection or detection of body fluid sampling; wherein, the stepper motor for medical injection and detection of body fluids is equipped with an optical coupling sensor, and the stepper motor 2 and the optical coupling sensor in the first embodiment of the present invention are electrically connected to the controller of the fully automatic injection device respectively, and the optical coupling sensor is fixedly installed on the fully automatic injection device, and when the movable lever 4 moves, the optical coupling sensor is in a stationary state; when working, the above-mentioned controller controls the action of the stepper motor 2.

[0030] During the operation of the stepper motor used for medical injection and detection of body fluids in the first embodiment of the present invention, the medical staff securely installs the needle tube on the needle tube clamping portion 42 of the movable lever 4, and the controller controls the stepper motor 2 to start. During this process, the screw 3 rotates, and the threaded transmission pair composed of the screw 3 and the threaded connection portion 41 of the movable lever 4 drives the movable lever 4 to move linearly. The linearly moving movable lever 4 drives the needle tube to move synchronously to realize the acupuncture action.

[0031] It should be pointed out that when the stepper motor 2 drives the movable lever 4 to move linearly, the optical coupling sensor targets the texture 43 of the movable lever 4, and the optical coupling sensor senses the black and white stripes of the texture 43 to feedback the moving distance of the movable lever 4, thereby accurately controlling the insertion depth of the syringe needle.

[0032] It should be emphasized that the threaded transmission pair composed of the screw rod 3 and the threaded connection portion 41 of the movable lever 4 in the first embodiment has the advantages of high motion control accuracy and simple structure.

[0033] Therefore, based on the above, it can be seen that through the above structural design, the stepper motor used for medical injection detection of body fluids in the first embodiment has the advantages of novel design, simple structure and high needle movement control accuracy.

[0034] Embodiment 2, as Figures 1 to 3 As shown, the difference between the second embodiment and the first embodiment is that the fixed bracket 1 is provided with a guide rod 5 extending straightly along the front-to-back direction, the movable lever 4 is provided with a guide hole 44 completely penetrating the front and back corresponding to the guide rod 5, and the guide rod 5 passes through the guide hole 44 of the movable lever 4.

[0035] When the stepper motor 2 drives the movable lever 4 to move linearly through the threaded transmission pair composed of the screw rod 3 and the threaded connection portion 41 of the movable lever 4, the second embodiment guides the movable lever 4 to move accurately through the guide pair composed of the guide rod 5 and the guide hole 44.

[0036] Embodiment three, as Figures 1 to 3 As shown, the difference between the third embodiment and the second embodiment is that the fixed bracket 1 includes a bracket bottom plate 11, and the bracket bottom plate 11 is provided with a front supporting side plate 12 and a rear supporting side plate 13, and the front supporting side plate 12 and the rear supporting side plate 13 are opposite to each other front and back and are arranged at intervals.

[0037] The fixing bracket 1 of the third embodiment may be a metal bracket, and the bracket bottom plate 11, the front supporting side plate 12, and the rear supporting side plate 13 are an integrated structure.

[0038] In addition, the stepper motor 2 is fixedly mounted on the rear support side plate 13, the front end of the screw rod 3 is connected to the front support side plate 12 through the bearing 6, and the front end and rear end of the guide rod 5 are respectively connected to the front support side plate 12 and the rear support side plate 13 on the corresponding sides.

[0039] Also, if Figure 1 and Figure 3 As shown, the bracket bottom plate 11 is provided with a fastening installation hole 111. During installation, the fastening installation hole 111 is equipped with a fastening screw, that is, the bracket bottom plate 11 is fastened and installed at the corresponding installation position by the fastening screw.

[0040] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A stepper motor for medical injection detection of body fluids, comprising a fixed bracket (1) and a stepper motor (2); Features: The housing of the stepper motor (2) is fixedly mounted on the fixed bracket (1), and the rotor of the stepper motor (2) is provided with a screw rod (3) extending forward. A movable lever (4) is linearly slidably mounted on the fixed bracket (1); the movable lever (4) is provided with a threaded portion (41) and a needle tube clamping portion (42); the threaded portion (41) of the movable lever (4) is threadably connected to the screw rod (3); The surface of the movable lever (4) is silk-screened with a texture (43) formed by sequentially spaced black and white stripes, and the black and white stripes in the texture (43) are sequentially spaced along the moving direction of the movable lever (4).

2. A stepper motor for medical injection detection of body fluids according to claim 1, characterized in that: The fixed bracket (1) is provided with a guide rod (5) extending in a straight line in the front-to-back direction, and the movable lever (4) is provided with a guide hole (44) which completely penetrates the front and back corresponding to the guide rod (5), and the guide rod (5) passes through the guide hole (44) of the movable lever (4).

3. A stepper motor for medical injection detection of body fluids according to claim 2, characterized in that: The fixed bracket (1) comprises a bracket bottom plate (11), the bracket bottom plate (11) is provided with a front supporting side plate (12) and a rear supporting side plate (13), the front supporting side plate (12) and the rear supporting side plate (13) are arranged front to back and spaced apart; The stepper motor (2) is fixedly mounted on the rear support side plate (13); the front end of the screw rod (3) is connected to the front support side plate (12) via a bearing (6); the front end and rear end of the guide rod (5) are respectively connected to the front support side plate (12) and the rear support side plate (13) on the corresponding sides.

4. A stepper motor for medical injection detection of body fluids according to claim 3, characterized in that: The bracket bottom plate (11) is provided with a fastening installation hole (111).

5. A stepper motor for medical injection detection of body fluids according to any one of claims 1 to 4, characterized in that: The stepper motor used for medical injection detection of body fluids is equipped with an optical coupler sensor.

Images