Portable mechanical device for automatically pushing and injecting liquid medicine at constant speed

Abstract

The invention discloses a portable mechanical device for automatically pushing and injecting liquid medicine at a constant speed, and relates to the technical field of medical care. The portable mechanical device for automatically pushing and injecting the liquid medicine at the constant speed comprises a needle cylinder, the top of the needle cylinder is movably connected with a needle head, the bottom of the needle cylinder is movably connected with a piston push rod, the piston push rod is arranged in the needle cylinder, and the back of the needle cylinder is fixedly connected with a fixing base. A driving motor is fixedly connected to the front face of the fixing base and located at the bottom of the piston push rod, and a top output shaft of the driving motor is fixedly connected with a threaded rod. According to the portable mechanical device for automatically pushing and injecting the liquid medicine at the constant speed, air in a movable sleeve box enters an adsorption groove through a pipeline through a compression plate, a pull-back ring plate is extruded, then the pull-back ring plate is pulled by a spring to reset, suction force is generated on skin of the adsorption groove, and a needle head can play a stable supporting role; accidental shaking of the needle during injection is avoided, and injection is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical care, and in particular to a portable mechanical device for automatically and uniformly pushing a liquid medicine. Background Art

[0002] In modern medical equipment, injection equipment is an important medical device, mainly used to inject drugs into the human body, and injections mostly adopt a pressure push structure; The patent cited in Chinese application number 202420124376.2 discloses a uniform speed injection device, comprising: a housing; a syringe: which is arranged inside the housing; a needle: which is arranged outside the housing and connected to the syringe; a push rod: which is arranged inside the housing, and one end of the push rod extends into the syringe; a cylinder: which is arranged inside the housing and connected to the other end of the push rod, and the cylinder is used to control the movement of the push rod in the syringe, and the movement of the push rod squeezes the liquid from the syringe into the needle; a time control key: which is arranged on the housing and is used to control the working time of the cylinder; During the injection process of the existing drug injection device, if the operator's hands are disturbed and shaken easily during the operation, the needle contacting the skin may cause damage to human tissue, making the injection inconvenient. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a portable mechanical device for automatically injecting liquid medicine at a uniform speed to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a portable mechanical device for automatically and uniformly injecting liquid medicine, comprising a syringe, a needle movably connected to the top of the syringe, a piston push rod movably connected to the bottom of the syringe, a piston push rod disposed inside the syringe, a fixing seat fixedly connected to the back of the syringe, a driving motor fixedly connected to the front of the fixing seat located at the bottom of the piston push rod, a threaded rod fixedly connected to the output shaft at the top of the driving motor, the threaded rod movably connected to the inside of the piston push rod, a fixing assembly fixedly connected to the outer wall of the syringe, and a locking assembly movably connected inside the fixing seat; The fixed components include: A movable sleeve, the movable sleeve being fixedly connected to the outer wall of the syringe; A compression plate movably connected to the interior of the movable sleeve; The adsorption groove is arranged on the top of the needle.

[0005] Preferably, a control component is fixedly connected to the bottom of the drive motor, the needle is detachably connected to the syringe, a structure is provided inside the syringe to limit the internal rotation of the piston push rod, and the piston push rod can only move up and down inside the syringe, and two buttons are provided at the bottom of the control component to control the drive motor to rotate in different directions.

[0006] Preferably, a protruding block is fixedly connected to the top of the adsorption groove, a pull-back ring plate is movably connected inside the adsorption groove, a first spring is fixedly connected to the bottom of the pull-back ring plate, and the first spring is fixedly connected to the bottom of the adsorption groove.

[0007] Preferably, a connecting rod is fixedly connected to the bottom of the adsorption tank, the bottom of the connecting rod is fixedly connected to the compression plate, the top of the compression plate is fixedly connected to a connecting pipe, the top of the connecting pipe is fixedly connected to the bottom of the adsorption tank, and an exhaust port is provided at the bottom of the adsorption tank.

[0008] Preferably, a second spring is fixedly connected to the bottom of the compression plate, and the bottom of the second spring is fixedly connected to the bottom inside the movable box.

[0009] Preferably, the locking assembly includes a fixing plate, which is arranged inside the fixing seat, the outer wall of the threaded rod is located at the bottom of the piston push rod and is fixedly connected with a locking tooth, and the front side of the fixing plate is located at a position corresponding to the locking tooth and is fixedly connected with a locking head.

[0010] Preferably, a push arm is fixedly connected to the front of the fixed plate, and the push arm is movably connected inside the movable sleeve and is located at the bottom of the compression plate.

[0011] Preferably, the bottom of the fixing plate is located outside the fixing seat and is fixedly connected to an outer pull sleeve, and the bottom of the outer pull sleeve is movably connected to a locking knob.

[0012] Preferably, the top of the push arm is fixedly connected to a first magnet, the bottom of the compression plate is fixedly connected to a second magnet at a position corresponding to the first magnet, the inside of the locking head is fixedly connected to a third magnet, and the bottom of the piston push rod is fixedly connected to a fourth magnet at a position corresponding to the third magnet.

[0013] The present invention provides a portable mechanical device for automatically and uniformly injecting liquid medicine. It has the following beneficial effects: 1. This portable mechanical device automatically pushes the liquid medicine at a uniform speed. The air inside the movable box enters the adsorption tank through the pipe through the compression plate, and the pull-back ring plate is squeezed. Then the pull-back ring plate is pulled back to its original position by the spring, so that suction is generated on the skin of the adsorption tank, which can provide stable support for the needle, avoid accidental shaking of the needle during injection, and facilitate injection.

[0014] 2. This portable mechanical device for automatically injecting liquid medicine at a uniform speed uses a locking head to lock the locking teeth, thereby preventing the threaded rod from being driven to rotate by the driving motor. When the needle penetrates the skin, the locking head is pushed downward by the arm, allowing the threaded rod to be driven for injection, thereby preventing the liquid medicine from being discharged from the syringe due to accidental touch, and facilitating injection.

[0015] 3. This portable mechanical device for automatically injecting liquid medicine at a uniform speed is fixed by a locking knob through the fixing plate. When the compression plate is pushed, it is supported by the pushing arm, so that the needle is always located inside the adsorption groove and the connecting rod, avoiding the needle from being hit and avoiding contact with the human body. While protecting the human body, the needle is also protected, making injection easier.

[0016] 4. This portable mechanical device automatically pushes the medicine at a constant speed. The compression plate pulls the push arm through the magnetic attraction to move the locking head to the top of the locking teeth. Then, when the liquid medicine is sucked into the syringe, the locking head will be stuck between the teeth of the locking teeth, and the syringe will automatically stop after it is filled with liquid medicine, which is convenient for controlling the amount of medicine injected continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention; Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the middle part A; Figure 3 This is a schematic diagram of the back three-dimensional structure of the present invention; Figure 4 for Figure 3 A schematic diagram of the enlarged structure of the middle C part; Figure 5 for Figure 3 Schematic diagram of cross-section structure; Figure 6 for Figure 5 The enlarged structural diagram of the middle D part; Figure 7 for Figure 5 The enlarged structural diagram of the middle E part; Figure 8 for Figure 1 A schematic diagram of the enlarged structure of the middle B part; Figure 9 This is a schematic diagram of the locking tooth structure of the present invention; Figure 10 This is a structural schematic diagram of the fixing plate of the present invention.

[0018] In the figure: 1. syringe; 2. needle; 3. piston push rod; 4. drive motor; 5. threaded rod; 6. control part; 7. fixed assembly; 701. movable sleeve; 702. compression plate; 703. adsorption groove; 704. connecting rod; 705. protrusion block; 706. connecting pipe; 707. exhaust port; 708. pull-back ring plate; 709. first spring; 710. second spring; 8. locking assembly; 801. fixed plate; 802. push arm; 803. locking head; 804. locking tooth; 805. first magnet; 806. second magnet; 807. outer pull sleeve; 808. locking knob; 809. third magnet; 810. fourth magnet; 9. fixing seat. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention.

[0021] Example 1: Please refer to Figure 1-7 The present invention provides a technical solution: a portable mechanical device for automatically and uniformly injecting liquid medicine, comprising a syringe 1, a needle 2 movably connected to the top of the syringe 1, a piston push rod 3 movably connected to the bottom of the syringe 1, the piston push rod 3 being arranged inside the syringe 1, a fixing seat 9 fixedly connected to the back of the syringe 1, a driving motor 4 fixedly connected to the front of the fixing seat 9 located at the bottom of the piston push rod 3, a threaded rod 5 fixedly connected to the output shaft at the top of the driving motor 4, the threaded rod 5 movably connected to the inside of the piston push rod 3, a fixing component 7 fixedly connected to the outer wall of the syringe 1, and a locking component 8 movably connected to the inside of the fixing seat 9; The fixing assembly 7 comprises: The movable sleeve 701 is fixedly connected to the outer wall of the syringe 1; Compression plate 702, compression plate 702 is movably connected to the interior of the movable sleeve 701; Adsorption groove 703 , the adsorption groove 703 is arranged on the top of the needle 2 .

[0022] A motor is used to push the piston push rod 3 to rotate at a uniform speed, thereby achieving uniform injection of the liquid medicine. A control component 6 is fixedly connected to the bottom of the drive motor 4, and the needle 2 is detachably connected to the syringe 1. A structure is provided inside the syringe 1 to limit the internal rotation of the piston push rod 3. The piston push rod 3 can only move up and down inside the syringe 1. Two buttons are provided at the bottom of the control component 6 to control the drive motor 4 to rotate in different directions.

[0023] By pressing the button on the control part 6, the drive motor 4 drives the threaded rod 5 to rotate. Since the piston push rod 3 is restricted by the syringe 1, the piston push rod 3 moves upward or downward through the action of the thread, so that the syringe 1 inhales or discharges the drug solution at a uniform speed through the needle 2.

[0024] Fixing the needle to the injected skin part can avoid wrong injection due to accidental hand shaking during injection. A protrusion block 705 is fixedly connected to the top of the adsorption groove 703, and a pull-back ring plate 708 is movably connected inside the adsorption groove 703. A first spring 709 is fixedly connected to the bottom of the pull-back ring plate 708, and the first spring 709 is fixedly connected to the bottom of the adsorption groove 703.

[0025] A connecting rod 704 is fixedly connected to the bottom of the adsorption tank 703, and the bottom of the connecting rod 704 is fixedly connected to the compression plate 702. A connecting pipe 706 is fixedly connected to the top of the compression plate 702, and the top of the connecting pipe 706 is fixedly connected to the bottom of the adsorption tank 703. An exhaust port 707 is opened at the bottom of the adsorption tank 703.

[0026] The needle 2 is aligned with the injection position so that the adsorption groove 703 is against the skin for injection. In the process of gradually inserting the needle into the skin, the skin will push the connecting rod 704 into the interior of the movable box 701 through the adsorption groove 703, and then the connecting rod 704 will further push the compression plate 702 into the interior of the movable box 701, so that the interior of the movable box 701 is compressed, and the compressed gas will enter the adsorption groove 703 through the connecting pipe 706. After the gas enters the adsorption groove 703, the air pressure in the space formed by the pull-back ring plate 708 and the movable box 701 increases, which will push the pull-back ring plate 708 outward and discharge it outward through the exhaust port 707. When the pull-back ring plate 708 is pushed, the top of the protrusion 705 is slightly higher than the top of the adsorption groove 703. The pull-back ring plate 708 will squeeze out the air on its top from the contact point between the protrusion 705 and the skin. When the needle is inserted into the appropriate position and stops moving at the bottom of the pull-back ring plate 708, the air pressure inside the pull-back ring plate 708 gradually becomes the same as that of the outside world under the action of the exhaust port 707. At this time, the pull-back ring plate 708 will be pulled down and reset by the first spring 709, and the air pressure on the top of the pull-back ring plate 708 will be reduced, which will generate suction on the skin and make the adsorption groove 703 adsorb near the surface of the injected skin to avoid accidental shaking of the needle 2 during injection.

[0027] The compression plate 702 needs to be automatically reset after being pushed, making it more convenient to use. The bottom of the compression plate 702 is fixedly connected to a second spring 710 , and the bottom of the second spring 710 is fixedly connected to the bottom inside the movable sleeve 701 .

[0028] The compression plate 702 is pushed to move, and the second spring 710 is compressed at the same time. After the compression plate 702 loses its driving force, it is slowly pushed back by the second spring 710 .

[0029] Example 2: Please refer to Figure 1-10 Based on the first embodiment, the present invention provides a technical solution: After the medicine is inhaled into the syringe 1, it is necessary to prevent the medicine from being accidentally discharged from the syringe 1. The locking assembly 8 includes a fixed plate 801, which is arranged inside the fixed seat 9. The outer wall of the threaded rod 5 is located at the bottom of the piston push rod 3 and is fixedly connected to a locking tooth 804. The front side of the fixed plate 801 is located at the corresponding position of the locking tooth 804 and is fixedly connected to a locking head 803. The front and back sides of the outer teeth of the locking tooth 804 have inclined surfaces, which makes it easy for the locking head 803 to be stuck between the teeth of the locking tooth 804.

[0030] The fixing plate 801 moves, driving the locking tooth 804 to move, so that the locking head 803 moves to the back of the locking tooth 804. The locking head 803 will jam the locking tooth 804, thereby preventing the threaded rod 5 from being driven to rotate by the driving motor 4, thereby preventing the piston push rod 3 from being pushed, and preventing the liquid from being discharged from the syringe 1 due to accidental touch.

[0031] During injection, the locking head 803 needs to be in contact with each other to limit the rotation of the locking tooth 804. The front of the fixed plate 801 is fixedly connected to the push arm 802, which is movably connected to the inside of the movable sleeve 701 and located at the bottom of the compression plate 702.

[0032] When the needle 2 is inserted into the skin, the movable sleeve 701 will be pushed to move toward the bottom. As the movable sleeve 701 moves, after the needle 2 is inserted into the skin, the compression plate 702 will push the pushing arm 802 downward and be driven by the pushing arm 802 through the fixing plate 801, so that the locking head 803 moves downward with the pushing arm 802, releasing the fixing effect on the locking tooth 804. At this time, the corresponding button at the bottom of the control part 6 is pressed, so that the drive motor 4 drives the threaded rod 5 to inject at a uniform speed.

[0033] When the syringe 1 is filled with liquid medicine, it may need to be stored temporarily or injected immediately. During storage, it is necessary to prevent the button on the control component 6 from being accidentally touched. The bottom of the fixed plate 801 is located outside the fixed seat 9 and is fixedly connected to an outer pull sleeve 807. The bottom of the outer pull sleeve 807 is movably connected to a locking knob 808.

[0034] By turning the locking knob 808 on the outer pull sleeve 807, the fixed plate 801 can slide freely in the fixed seat 9, which is convenient for self-control of the position of the locking head 803. After moving the locking head 803 to the position corresponding to the locking tooth 804, turning the locking knob 808 can fix the push arm 802, and then the locking tooth 804 can be stuck by the locking head 803, so that the drive motor 4 cannot drive the threaded rod 5 to rotate. After moving the locking head 803 to the bottom of the locking tooth 804, the locking knob 808 is turned to fix the position of the fixed plate 801. At this time, the drive motor 4 can freely drive the threaded rod 5 to push the piston push rod 3, which is convenient for multiple continuous discharge and inhalation of liquid medicine from the syringe 1.

[0035] After the fixing plate 801 moves the locking head 803 to the corresponding position of the locking tooth 804 and locks the locking tooth 804, the fixing plate 801 is fixed by turning the locking knob 808. At this time, the position of the pushing arm 802 in the movable sleeve 701 is also fixed. At this time, if the adsorption groove 703 is pushed toward the movable sleeve 701 by an external force, the compression plate 702 will be supported by the pushing arm 802, so that the needle 2 is always located inside the adsorption groove 703 and the connecting rod 704, preventing the needle 2 from being hit and preventing the needle 2 from contacting the human body.

[0036] When the liquid medicine is sucked into the syringe 1, the driving motor 4 automatically stops rotating after it is full. The top of the push arm 802 is fixedly connected to the first magnet 805, the bottom of the compression plate 702 is fixedly connected to the second magnet 806 at the position corresponding to the first magnet 805, the inside of the locking head 803 is fixedly connected to the third magnet 809, and the bottom of the piston push rod 3 is fixedly connected to the fourth magnet 810 at the position corresponding to the third magnet 809.

[0037] After the syringe 1 has injected once, the compression plate 702 will be pushed back to its original position by the first spring 709. At the same time, the compression plate 702 will attract the first magnet 805 through the second magnet 806 to pull the pushing arm 802 to the top, and the fixing plate 801 will be pulled upward by the pushing arm 802, and the locking head 803 will be pulled to the top of the locking tooth 804 through the fixing plate 801. Then, the button on the control component 6 is pressed to make the drive motor 4 drive the threaded rod 5, so that when the syringe 1 absorbs the liquid medicine, the piston push rod 3 will push the locking head 803 downward, and through the direct mutual adsorption effect between the third magnet 809 and the fourth magnet 810, the locking head 803 is tightly attached to the bottom of the piston push rod 3. After the syringe 1 is filled, the piston push rod 3 presses against the locking tooth 804, and the locking head 803 is stuck between the teeth of the locking tooth 804, while preventing the rotation of the threaded rod 5, thereby achieving automatic stop after the syringe 1 is filled with liquid medicine.

[0038] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A portable mechanical device for automatically injecting liquid medicine at a constant speed, comprising a syringe (1), characterized in that: The top of the syringe (1) is movably connected to a needle (2), the bottom of the syringe (1) is movably connected to a piston push rod (3), the piston push rod (3) is arranged inside the syringe (1), the back of the syringe (1) is fixedly connected to a fixing seat (9), the front of the fixing seat (9) is located at the bottom of the piston push rod (3) and is fixedly connected to a driving motor (4), the top output shaft of the driving motor (4) is fixedly connected to a threaded rod (5), the threaded rod (5) is movably connected to the inside of the piston push rod (3), the outer wall of the syringe (1) is fixedly connected to a fixing component (7), and the inside of the fixing seat (9) is movably connected to a locking component (8); The fixing assembly (7) comprises: A movable sleeve (701), wherein the movable sleeve (701) is fixedly connected to the outer wall of the syringe (1); A compression plate (702), the compression plate (702) being movably connected to the interior of the movable sleeve (701); An adsorption groove (703), wherein the adsorption groove (703) is arranged on the top of the needle (2).

2. A portable mechanical device for automatically injecting liquid medicine at a constant speed according to claim 1, characterized in that: The bottom of the drive motor (4) is fixedly connected to a control member (6), the needle (2) is detachably connected to the syringe (1), and a structure is provided inside the syringe (1) to limit the internal rotation of the piston push rod (3). The piston push rod (3) can only move up and down inside the syringe (1), and two buttons for controlling the drive motor (4) to rotate in different directions are provided at the bottom of the control member (6).

3. A portable mechanical device for automatically injecting liquid medicine at a constant speed according to claim 1, characterized in that: The top of the adsorption groove (703) is fixedly connected to a protruding block (705), the interior of the adsorption groove (703) is movably connected to a pull-back ring plate (708), the bottom of the pull-back ring plate (708) is fixedly connected to a first spring (709), and the first spring (709) is fixedly connected to the bottom of the adsorption groove (703).

4. A portable mechanical device for automatically injecting liquid medicine at a constant speed according to claim 3, characterized in that: The bottom of the adsorption tank (703) is fixedly connected to a connecting rod (704), the bottom of the connecting rod (704) is fixedly connected to the compression plate (702), the top of the compression plate (702) is fixedly connected to a connecting pipe (706), the top of the connecting pipe (706) is fixedly connected to the bottom of the adsorption tank (703), and the bottom of the adsorption tank (703) is provided with an exhaust port (707).

5. The portable mechanical device for automatically injecting liquid medicine at a constant speed according to claim 3, characterized in that: The bottom of the compression plate (702) is fixedly connected to a second spring (710), and the bottom of the second spring (710) is fixedly connected to the inner bottom of the movable sleeve (701).

6. A portable mechanical device for automatically injecting liquid medicine at a constant speed according to claim 1, characterized in that: The locking assembly (8) comprises a fixing plate (801), the fixing plate (801) being arranged inside the fixing seat (9), the outer wall of the threaded rod (5) being located at the bottom of the piston push rod (3) and being fixedly connected to a locking tooth (804), and the front surface of the fixing plate (801) being located at a position corresponding to the locking tooth (804) and being fixedly connected to a locking head (803).

7. A portable mechanical device for automatically injecting liquid medicine at a constant speed according to claim 6, characterized in that: The front of the fixed plate (801) is fixedly connected to a push arm (802), and the push arm (802) is movably connected inside the movable sleeve (701) and is located at the bottom of the compression plate (702).

8. The portable mechanical device for automatically injecting liquid medicine at a constant speed according to claim 6, characterized in that: The bottom of the fixing plate (801) is located outside the fixing seat (9) and is fixedly connected to an outer pull sleeve (807), and the bottom of the outer pull sleeve (807) is movably connected to a locking knob (808).

9. The portable mechanical device for automatically injecting liquid medicine at a constant speed according to claim 7, characterized in that: The top of the push arm (802) is fixedly connected to a first magnet (805), the bottom of the compression plate (702) is fixedly connected to a second magnet (806) at a position corresponding to the first magnet (805), the interior of the locking head (803) is fixedly connected to a third magnet (809), and the bottom of the piston push rod (3) is fixedly connected to a fourth magnet (810) at a position corresponding to the third magnet (809).

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