An injection mechanism for emergency treatment

Abstract

The application belongs to the technical field of medical devices, and particularly relates to an injection mechanism for emergency treatment, which comprises a syringe and an open-box body, the syringe comprises a barrel, a needle plug and a needle, the needle plug is arranged in the barrel, the needle is installed on the barrel, a first clamping mechanism for limiting the relative movement of the needle plug relative to the barrel is installed on the barrel, the free end of the first clamping mechanism is clamped on the needle plug, a sliding seat is slidably installed in the open-box body, an installation groove is formed in the sliding seat, the barrel of the syringe is inserted into the installation groove, a first compression spring is installed below the sliding seat in the open-box body, a second clamping mechanism is installed on the open-box body, the free end of the second clamping mechanism is clamped on the sliding seat, a cover is further installed on the open-box body, and the cover is in transmission connection with the second clamping mechanism. The purpose is to solve the problem of low efficiency caused by the structural defects of the existing injection mechanism.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to an injection device for emergency treatment. Background Technology

[0002] In the clinical treatment of critically ill patients, the primary principle is to minimize the time from the onset of illness to the arrival of treatment. This is especially true in pre-hospital emergency care and battlefield emergency care, where the number of critically injured patients is uneven, their cooperation is poor, and the situation presents a significant challenge of limited personnel and numerous tasks. Rapid application of treatment methods can effectively improve the timeliness of treatment and the success rate of rescue efforts.

[0003] As the primary medical device used in the application of current treatment drugs, the standard operating procedure for syringes is as follows: open the outer packaging of the disposable syringe, remove the syringe, remove the needle cap, draw the drug solution from the pre-broken ampoule or vial, and then expel the air from the syringe before the drug injection can be completed.

[0004] In conditions such as battlefield first aid and pre-hospital emergency care, the operating procedures are more complicated. Syringes are usually placed in backpacks or first aid kits. To obtain the syringe, the backpack needs to be removed from the back, the backpack needs to be opened to find and open the corresponding module before the syringe can be located. Then, the above procedure is followed to complete the aspiration and injection of the drug.

[0005] The entire operation is complicated and not conducive to rapid rescue in emergency situations, which may lead to a decrease in the timeliness of treatment and the success rate of rescue. Summary of the Invention

[0006] The purpose of this invention is to provide an emergency injection mechanism to solve the problem of low efficiency caused by structural defects in existing injection mechanisms.

[0007] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0008] An emergency treatment injection mechanism includes a syringe and a box with an open top. The syringe includes a barrel, a plunger, and a needle. The plunger passes through the barrel, and the needle is mounted on the barrel. A first locking mechanism is installed on the barrel to restrict the plunger from moving away from the barrel. The free end of the first locking mechanism is locked onto the plunger. A sliding seat is slidably installed in the box, and an installation groove is formed in the sliding seat. The barrel of the syringe is inserted into the installation groove. A first compression spring is installed below the sliding seat in the box. A second locking mechanism is installed on the box, and the free end of the second locking mechanism is locked onto the sliding seat. A cover is also installed on the box, and the cover is drivenly connected to the second locking mechanism.

[0009] Furthermore, a limiting plate is fixedly provided on the inner wall of the box above the sliding seat. This structural design limits the maximum upward movement of the sliding seat under the action of the first compression spring, preventing the sliding seat from detaching from the box under the ejection of the first compression spring. The structure is simple and highly practical.

[0010] Furthermore, a pressure buffer layer is installed within the mounting groove. This structural design, by covering the cylinder with the pressure buffer layer and utilizing the compression of the cylinder by the pressure buffer layer, can prevent the syringe from detaching from the sliding seat when the sliding seat moves rapidly upward under the action of the first compression spring, making it highly practical.

[0011] Further defined, the first locking mechanism includes a sliding block and locking teeth. A sliding groove is radially formed on the cylinder body, and the sliding block is slidably installed within the sliding groove. A knob is screwed onto the outside of the sliding block on the cylinder body. A second compression spring is installed between the knob and the sliding block. The locking teeth are fixedly connected to the sliding block and located within the cylinder body. The upper end face of the locking teeth is inclined from top to bottom towards the needle plug. Several locking grooves are evenly distributed on the outer wall of the needle plug, and the opening direction of the locking grooves is inclined upwards from the inside out. This structural design, through the interaction of the locking teeth, locking grooves, sliding block, second compression spring, and knob, constitutes a first locking mechanism for restricting the needle plug's movement relative to the cylinder body. It is simple in structure, easy to manufacture, and highly practical.

[0012] Furthermore, a connecting post is fixedly provided on the side of the sliding block away from the locking teeth, and the second compression spring is sleeved on the connecting post. A through hole is provided on the knob, and the connecting post passes through the through hole. This structural design, by guiding the second compression spring through the connecting post, can avoid spring failure caused by axial bending of the second compression spring, and has strong practicality.

[0013] Furthermore, the connecting post is fixedly installed with a stop block through the perforation. This structural design limits the maximum movement distance of the connecting post under the action of the second compression spring by the stop block. Before using the syringe, the sliding block can be pre-installed on the knob, making the installation of the locking teeth more convenient.

[0014] Further specifying, the cover is equipped with a hinge seat, the box is equipped with a hinge post, the hinge seat is hinged to the box via the hinge post, a torsion spring is installed between the hinge seat and the hinge post, and a third locking mechanism is installed between the box and the cover. This structural design, through the hinge between the hinge seat and the hinge post, completes the connection between the box and the cover, and the torsion spring provides power to the cover. After opening the third locking mechanism, the cover can automatically open under the action of the torsion spring, eliminating the need for manual opening, making it more convenient and practical.

[0015] Further defined, the second locking mechanism includes a locking block and a locking rod. The outer wall of the box has a horizontally opened sliding groove, the outer wall of the sliding seat has a fixed groove, the upper end face of the locking block has a horizontally opened positioning groove, and the locking rod is vertically slidably installed on the box. Before the cover is opened, the inner end of the locking block passes through the sliding groove and is locked in the fixed groove. The upper end of the locking rod abuts against the lower end face of the cover, and the lower end of the locking rod is locked in the positioning groove. The cross-sections of the inner end of the locking block and the lower end of the locking rod are both wedge-shaped. This structural design, through the cooperation of the locking block, locking rod, first compression spring, and cover, restricts the upward movement of the locking rod before the cover is opened. The lower end of the locking rod, locked in the positioning groove, restricts the outward movement of the locking block. The locking block, locked in the fixing groove, restricts the upward movement of the sliding seat, preventing it from moving upward under the action of the first compression spring. After the cover is opened, the upper end of the locking rod is suspended, and the sliding seat moves upward under the action of the first compression spring, pushing the locking block outward, which in turn pushes the locking rod upward. At this point, the sliding seat moves upward under the action of the first compression spring, pushing the syringe plunger out of the housing. The structure is simple and easy to use.

[0016] Further specifying, the third locking mechanism includes a flap and an elastic mechanism. The flap is hinged to the box body, and a hook is fixedly provided on the upper end of the flap near the cover. A hook groove is provided on the cover, and the hook is hooked in the hook groove. The elastic mechanism is located between the lower part of the flap and the box body. This structural design, by pressing the lower part of the flap, overcomes the prestress of the elastic mechanism, causing the flap to rotate counterclockwise, thereby disengaging the hook from the hook groove. At this time, the cover can automatically open under the action of the torsion spring. The structure is simple and easy to use.

[0017] The invention employing the above technical solution has the following advantages:

[0018] 1. Through the cooperation of the syringe, sliding seat, first compression spring, second locking mechanism and cover, the drug is pre-made in the syringe. After the cover is opened, the second locking mechanism is opened by the cover, so that the sliding seat moves upward automatically under the action of the first compression spring until the needle of the syringe is exposed in the box. At this time, the syringe can be quickly pulled out for rapid injection into the patient, which significantly improves efficiency.

[0019] 2. The syringe is fully covered by the box and cap, preventing it from being contaminated by the environment, making it highly practical.

[0020] 3. The first locking mechanism is formed by the cooperation of the locking teeth, locking groove, sliding block, second compression spring and knob to limit the movement of the needle plug relative to the barrel. This allows the syringe to be pulled out directly by grasping the needle plug while ensuring that no air enters the syringe and the needle plug does not detach from the barrel. This makes it convenient to use. At the same time, when the needle is inserted into the human body and the drug is injected using the needle plug, there is no need to open the first locking mechanism, which further improves the efficiency of rescue.

[0021] 4. The maximum upward movement of the sliding seat under the action of the first compression spring is limited by the limiting plate, which prevents the sliding seat from detaching from the box under the ejection of the first compression spring. The structure is simple and highly practical.

[0022] 5. The maximum movement distance of the connecting column under the action of the second compression spring is limited by the stop block. Before the syringe is used, the sliding block can be pre-installed on the knob, making the installation of the locking teeth more convenient.

[0023] 6. Through the cooperation of the locking block, locking rod, first compression spring, and cover, before the cover is opened, the cover restricts the upward movement of the locking rod. After the lower end of the locking rod is locked in the positioning groove, it restricts the outward movement of the locking block. After the locking block is locked in the fixing groove, it restricts the upward movement of the sliding seat, preventing the sliding seat from moving upward under the action of the first compression spring. After the cover is opened, the upper end of the locking rod is suspended in the air. The sliding seat moves upward under the action of the first compression spring, pushing the locking block to move outward, and then pushing the locking rod to move upward. At this time, the sliding seat moves upward under the action of the first compression spring, pushing the syringe plunger out of the box. The structure is simple and easy to use. Attached Figure Description

[0024] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0025] Figure 1 This is a schematic diagram of the syringe portion in an embodiment of an emergency treatment injection mechanism of the present invention;

[0026] Figure 2 This is a cross-sectional view of the syringe portion in an embodiment of an emergency treatment injection mechanism of the present invention;

[0027] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0028] Figure 4 This is a schematic diagram of the structure of an emergency treatment injection mechanism according to the present invention when the cover is closed;

[0029] Figure 5This is a cross-sectional view of an embodiment of an emergency treatment injection mechanism of the present invention when the cover is closed;

[0030] Figure 6 for Figure 5 Enlarged structural diagram at point B;

[0031] Figure 7 for Figure 5 Enlarged structural diagram at point C;

[0032] Figure 8 This is a schematic diagram of the structure of an emergency treatment injection mechanism according to the present invention when the cover is open;

[0033] Figure 9 This is a cross-sectional view of the cover when it is open in an embodiment of an emergency treatment injection mechanism of the present invention;

[0034] Figure 10 for Figure 9 Enlarged structural diagram at point D;

[0035] Figure 11 for Figure 9 Enlarged structural diagram at point E;

[0036] Figure 12 This is a schematic diagram of the structure of the locking block and locking rod in an embodiment of an emergency treatment injection mechanism of the present invention;

[0037] The symbols for the main components are explained below:

[0038] Syringe 1, barrel 11, plunger 12, needle 13

[0039] Sliding block 111, sliding groove 1110, locking tooth 112, locking groove 1120, knob 113, second compression spring 114, connecting post 115, stop block 116.

[0040] Box 2

[0041] Sliding seat 3, first compression spring 30, limiting plate 31, pressure buffer layer 32

[0042] Cover 4, Hinge seat 41, Hinge post 42, Torsion spring 43

[0043] Block 51, slide 510, lever 52, positioning groove 520

[0044] Flip plate 6, elastic mechanism 60, hook 61. Detailed Implementation

[0045] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that similar or identical parts are referred to by the same reference numerals in the drawings or description. Implementations not shown or described in the drawings are forms known to those skilled in the art. In addition, directional terms mentioned in the embodiments, such as "up," "down," "top," "bottom," "left," "right," "front," and "back," are only for reference to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0046] like Figures 1 to 11 As shown, an emergency treatment injection mechanism of this embodiment includes a syringe 1 and a box 2 with an opening at the top.

[0047] like Figures 1-3 As shown, the syringe 1 includes a barrel 11, a plunger 12, and a needle 13. The plunger 12 passes through the barrel 11, and the needle 13 is mounted on the barrel 11. A first locking mechanism is installed on the barrel 11 to restrict the plunger 12 from moving away from the barrel 11. The first locking mechanism includes a sliding block 111 and a locking tooth 112. A sliding groove 1110 is radially formed on the barrel 11, and the sliding block 111 is slidably mounted in the sliding groove 1110. A knob 113 is screwed onto the outside of the sliding block 111 on the barrel 11. A second pressure device is installed between the knob 113 and the sliding block 111. The compression spring 114, the locking tooth 112 and the sliding block 111 are fixedly connected and located inside the cylinder 11. The upper end face of the locking tooth 112 is inclined from top to bottom towards the needle bolt 12. The outer wall of the needle bolt 12 is evenly provided with a number of locking grooves 1120. The opening direction of the locking grooves 1120 is inclined upward from the inside to the outside. The sliding block 111 is fixedly provided with a connecting post 115 on the side away from the locking tooth 112. The second compression spring 114 is sleeved on the connecting post 115. The knob 113 is provided with a through hole. The connecting post 115 passes through the through hole. The connecting post 115 is fixedly installed with a stop block 116 through the through hole.

[0048] like Figure 5 and Figure 9 As shown, a sliding seat 3 is slidably installed inside the box body 2, and a limiting plate 31 is fixedly provided on the inner wall of the box body 2 above the sliding seat 3;

[0049] like Figure 5 and Figure 9 As shown, the sliding seat 3 has an installation groove, and a pressure buffer layer 32 is installed in the installation groove. The pressure buffer layer 32 can be a sponge pad, memory foam, etc., and there is no restriction on the specific material type. Any material that can buffer pressure is acceptable.

[0050] The syringe barrel 11 is inserted into the mounting groove, and a first compression spring 30 is installed below the sliding seat 3 inside the box 2;

[0051] like Figure 5 , Figure 6 , Figure 9 , Figure 11 and Figure 12 As shown, a second locking mechanism is installed on the box body 2. The free end of the second locking mechanism is locked on the sliding seat 3. The second locking mechanism includes a locking block 51 and a locking rod 52. A sliding groove 510 is opened horizontally on the outer wall of the box body 2. A fixing groove is opened on the outer wall of the sliding seat 3. A positioning groove 520 is opened horizontally on the upper end face of the locking block 51. The locking rod 52 is vertically slidably installed on the box body 2. Before the cover 4 is opened, the inner end of the locking block 51 passes through the sliding groove 510 and is locked in the fixing groove. The upper end of the locking rod 52 abuts against the lower end face of the cover 4. The lower end of the locking rod 52 is locked in the positioning groove 520. The cross-sections of the inner end of the locking block 51 and the lower end of the locking rod 52 are both wedge-shaped.

[0052] like Figure 9 and Figure 10 As shown, a cover 4 is also installed on the box body 2, a hinge seat 41 is installed on the cover 4, a hinge post 42 is installed on the box body 2, the hinge seat 41 is hinged to the box body 2 through the hinge post 42, a torsion spring 43 is installed between the hinge seat 41 and the hinge post 42, and a third locking mechanism is installed between the box body 2 and the cover 4.

[0053] like Figure 5 and Figure 7 As shown, the third locking mechanism includes a flap 6 and an elastic mechanism 60. The flap 6 is hinged to the box body 2. A hook 61 is fixedly provided on the upper end of the flap 6 near the cover 4. A hook groove is provided on the cover 4. The hook 61 is hung in the hook groove. The elastic mechanism 60 is located between the lower part of the flap 6 and the box body 2.

[0054] In this embodiment, before use, a needle 13 is installed on the cylinder 11, and the drug is drawn through the needle 13. After the drawing is completed, the syringe 1 is inverted to vent the air. After the air is vented, the sliding block 111 is inserted into the sliding groove 1110 and the knob 113 is tightened. The second compression spring 114 is used to push the sliding block 111 towards the needle plug 12, so that the locking teeth 112 are locked into the corresponding locking groove 1120.

[0055] Then open the cover 4, insert the syringe 1 into the mounting groove with the pressure buffer layer 32, and push the sliding seat 3 into the box 2 until it is fully inserted. At this time, the locking block 51 is aligned with the fixing groove. Then press the locking block 51 towards the sliding seat 3 so that the locking block 51 is inserted into the fixing groove, and the locking block 51 completes the fixing of the sliding seat 3.

[0056] Then, flip the cover 4 so that it covers the opening at the top of the box 2, and hook 61 is hooked into the hook groove, thus fixing the cover 4 to the box 2 and limiting the upward movement of the locking rod 52, thereby fixing the sliding seat 3 (e.g. Figures 1-7 (as shown);

[0057] Finally, the injection device can be inserted into a backpack with an external pocket, such as the new type of workstation emergency backpack applied for by our company on 2017-09-19 (publication number: CN209091883U), which is attached to an external bag by a connecting strip; under pre-hospital emergency care and battlefield treatment conditions, the injection device can be quickly obtained without removing and opening the backpack.

[0058] When in use, medical staff carry backpacks equipped with injection mechanisms and move around. When they reach the patient, they press the lower end of the flap 6 to overcome the prestress of the elastic mechanism 60, causing the flap 6 to rotate counterclockwise, the hook 61 to disengage from the hook groove, and the cover 4 to open automatically under the action of the torsion spring 43.

[0059] After the cover 4 is opened, the sliding seat 3 moves upward under the action of the first compression spring 30, pushing the locking block 51 to move outward, which in turn pushes the locking rod 52 to move upward. At this time, the sliding seat 3 moves upward under the action of the first compression spring 30, pushing the needle plug 12 of the syringe 1 out of the box 2 (e.g., Figures 8-11 (as shown);

[0060] After the needle plug 12 is exposed in the box 2, grasp the needle plug 12 and pull the syringe 1 outward to administer the drug to the patient.

[0061] The above provides a detailed description of an emergency treatment injection device provided by the present invention. The specific embodiments are described only to aid in understanding the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An emergency treatment injection device, characterized in that: The device includes a syringe (1) and a box (2) with an open top. The syringe (1) includes a barrel (11), a needle plug (12), and a needle (13). The needle plug (12) passes through the barrel (11), and the needle (13) is mounted on the barrel (11). A first locking mechanism is installed on the barrel (11) to restrict the needle plug (12) from moving away from the barrel (11). The free end of the first locking mechanism is locked onto the needle plug (12). The box (2) A sliding seat (3) is slidably installed inside the box (2). An installation groove is provided inside the sliding seat (3). The barrel (11) of the syringe (1) is inserted into the installation groove. A first compression spring (30) is installed below the sliding seat (3) inside the box (2). A second locking mechanism is installed on the box (2). The free end of the second locking mechanism is locked on the sliding seat (3). A cover (4) is also installed on the box (2). The cover (4) is connected to the second locking mechanism in a transmission manner. The first locking mechanism includes a sliding block (111) and a locking tooth (112). A sliding groove (1110) is radially opened on the cylinder (11). The sliding block (111) is slidably installed in the sliding groove (1110). A knob (113) is screwed to the outside of the sliding block (111) on the cylinder (11). A second compression spring (114) is installed between the knob (113) and the sliding block (111). The locking tooth (112) is fixedly connected to the sliding block (111) and located inside the cylinder (11). The upper end face of the locking tooth (112) is inclined from top to bottom towards the needle plug (12). A plurality of locking grooves (1120) are evenly provided on the outer wall of the needle plug (12). The opening direction of the locking grooves (1120) is inclined upward from the inside to the outside.

2. The emergency treatment injection device according to claim 1, characterized in that: The inner wall of the box (2) is fixedly provided with a limiting plate (31) above the sliding seat (3).

3. The emergency treatment injection device according to claim 1, characterized in that: A pressure buffer layer (32) is installed in the mounting slot.

4. The emergency treatment injection device according to claim 1, characterized in that: The sliding block (111) is fixedly provided with a connecting post (115) on the side away from the locking tooth (112). The second compression spring (114) is sleeved on the connecting post (115). The knob (113) has a through hole, and the connecting post (115) passes through the through hole.

5. An emergency treatment injection device according to claim 4, characterized in that: The connecting column (115) is fixedly installed with a stop (116) through the perforation.

6. An emergency treatment injection device according to claim 1, characterized in that: A hinge seat (41) is installed on the cover (4), and a hinge post (42) is installed on the box (2). The hinge seat (41) is hinged to the box (2) through the hinge post (42). A torsion spring (43) is installed between the hinge seat (41) and the hinge post (42). A third locking mechanism is installed between the box (2) and the cover (4).

7. An emergency treatment injection device according to claim 6, characterized in that: The second locking mechanism includes a locking block (51) and a locking rod (52). The outer wall of the box body (2) is provided with a sliding groove (510) in the horizontal direction. The outer wall of the sliding seat (3) is provided with a fixing groove. The upper end face of the locking block (51) is provided with a positioning groove (520) in the horizontal direction. The locking rod (52) is vertically slidably installed on the box body (2). Before the cover (4) is opened, the inner end of the locking block (51) passes through the sliding groove (510) and is locked in the fixing groove. The upper end of the locking rod (52) abuts against the lower end face of the cover body (4). The lower end of the locking rod (52) is locked in the positioning groove (520). The cross-sections of the inner end of the locking block (51) and the lower end of the locking rod (52) are both wedge-shaped.

8. An emergency treatment injection device according to claim 6, characterized in that: The third locking mechanism includes a flip plate (6) and an elastic mechanism (60). The flip plate (6) is hinged to the box body (2). A hook (61) is fixedly provided on the upper end of the flip plate (6) near the cover (4). A hook groove is provided on the cover (4). The hook (61) is hung in the hook groove. The elastic mechanism (60) is located between the lower part of the flip plate (6) and the box body (2).

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