Force storage mechanism and injector

Abstract

The utility model relates to the technical field of injectors, in particular to a force storage mechanism and an injector. The moving rod is arranged in the cavity in a sliding manner; the elastic piece is arranged between the moving rod and the inner wall of the cavity; and the power piece can control the moving rod to move, and the elastic piece can be compressed when the moving rod moves. According to the force storage mechanism and the injector, the moving rod is controlled by the power piece to compress the elastic piece so that force storage of the moving rod can be completed, and when the moving rod is released, the moving rod rapidly moves under the elastic force of the elastic piece to make contact with the piston rod and drive the piston rod to move, so that liquid medicine in the medicine storage needle tube is sprayed out, and injection is completed.

Description

Technical Field

[0001] This utility model relates to the field of syringe technology, and in particular to a power storage mechanism and a syringe. Background Technology

[0002] Needle-free injectors mainly utilize the principle of pressure jet. The internal pressure device generates pressure, which pushes the liquid in the tube through micropores to form an extremely fine liquid column. This allows the liquid to penetrate the epidermis and reach the subcutaneous layer instantly. The liquid is then absorbed in a diffused manner with a diameter of 3-5 cm under the skin.

[0003] Existing needle-free injectors include batteries, drive motors, and injection mechanisms, and are generally large in size. They are used in separate injection spaces to ensure timely replenishment of power and medication. These injectors are not portable and cannot be used for injections anytime, anywhere. Utility Model Content

[0004] In view of the problems existing in the above-mentioned power storage mechanism and syringe, this utility model is proposed.

[0005] Therefore, one of the objectives of this utility model is to provide a power storage mechanism, the purpose of which is to store power in advance for injection into a syringe.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a power storage mechanism, comprising a cavity;

[0007] A movable rod, which is slidably disposed in the cavity;

[0008] An elastic element is disposed between the moving rod and the inner wall of the cavity;

[0009] A power component that controls the displacement of a moving rod, and the moving rod compresses the elastic component when it moves.

[0010] As a preferred embodiment of the power storage mechanism of this utility model, the end of the moving rod extends out of the cavity, and the power component includes a control part disposed at the end of the moving rod;

[0011] The control unit can pull the moving rod to move the elastic element.

[0012] As a preferred embodiment of the power storage mechanism of this utility model, the power component includes a long rod that is slidably disposed in the cavity;

[0013] Both ends of the long rod are provided with bent sections;

[0014] One of the bending portions cooperates with the moving rod, while the other bending portion facilitates control of the long rod's movement.

[0015] As a preferred embodiment of the power storage mechanism of this utility model, the power component includes a long rod rotatably disposed in the cavity;

[0016] The long rod has a bent portion at one end, which cooperates with the movable rod, and the other end of the long rod is located outside the cavity.

[0017] As a preferred embodiment of the power storage mechanism of this utility model, it further includes a limiting member, which includes a snap-fit ​​block elastically disposed inside the cavity;

[0018] The movable rod is provided with a groove.

[0019] The snap-fit ​​block engages with the groove.

[0020] As a preferred embodiment of the energy storage mechanism of this utility model, the snap-fit ​​block is provided with a receiving groove;

[0021] The receiving slot is through which the moving rod passes.

[0022] In a preferred embodiment of the power storage mechanism of this utility model, the locking block cooperates with the power component;

[0023] The power component is provided with a pressing part;

[0024] The end of the snap-fit ​​block is provided with a pressing surface. When the pressing part moves, it contacts the pressing surface to control the snap-fit ​​block to move and separate from the groove.

[0025] As a preferred embodiment of the energy storage mechanism of this utility model, the cavity is formed by an installation tube, and the installation tube is provided with an annular protrusion inside;

[0026] The movable rod is slidably disposed in the annular protrusion.

[0027] The beneficial effects of this energy storage mechanism are: the moving rod is controlled by the power component to move, and the elastic element is compressed during the movement of the moving rod, thereby completing the energy storage process. When the elastic element is released, it will drive the moving rod to move quickly.

[0028] Therefore, another objective of this invention is to provide a syringe that allows for pre-injection of power, facilitating injection anytime and anywhere.

[0029] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a syringe, including the aforementioned power storage mechanism, and further comprising;

[0030] An injection device, comprising a drug-reservoir needle tube and a piston rod slidably disposed within the drug-reservoir needle tube;

[0031] The drug-filled needle tube is connected to the mounting tube, and the moving rod cooperates with the piston rod.

[0032] In a preferred embodiment of the syringe described in this utility model, the drug-reservoir needle tube is threadedly connected to the mounting tube;

[0033] When the moving rod moves, it will collide with the piston rod and drive the piston rod to move.

[0034] The beneficial effects of this utility model are as follows: By controlling the compression of the elastic element through the power component, the moving rod can be charged. When the moving rod is released, it moves quickly under the elastic force of the elastic element and contacts the piston rod, thereby driving the piston rod to move and spraying the liquid medicine in the drug storage needle tube to complete the injection. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A schematic diagram of the first configuration of Embodiment 1 is shown;

[0037] Figure 2 A schematic diagram of the second configuration of Embodiment 1 is shown;

[0038] Figure 3 A schematic diagram of the first configuration of Embodiment 2 is shown;

[0039] Figure 4 A schematic diagram of the second embodiment of Example 2 is shown;

[0040] Figure 5 A schematic diagram of the receiving groove in Embodiment 2 is shown;

[0041] Figure 6 A schematic diagram of the overall form of Embodiment 3 is shown;

[0042] Figure 7 A schematic diagram of the overall form of Embodiment 4 is shown;

[0043] Figure 8 A schematic diagram of the overall shape of Embodiment 5 is shown;

[0044] Figure 9 A schematic diagram of the overall form of Embodiment Six is ​​shown. Detailed Implementation

[0045] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0046] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0047] Example 1, referring to Figures 1-2 The first embodiment of this utility model provides a power storage mechanism, including: a cavity S1, a moving rod 200, an elastic element 300, and a power element 400;

[0048] Among them, such as Figure 1 As shown, cavity S1 is formed by mounting tube 100, and moving rod 200 is slidably disposed in cavity S1 formed by mounting tube 100. Moving rod 200 is slidably connected to inner wall of mounting tube 100. Limiting post may be provided inside mounting tube 100, and the limiting post is inserted into moving rod 200 to limit and guide moving rod 200. Elastic element 300 is made of metal spring sheet, one end is fixed to moving rod 200, and the other end is fixed to inner wall of mounting tube 100.

[0049] The power component 400 can control the displacement of the moving rod 200, and the moving rod 200 will compress the elastic element 300 when it moves. The end of the moving rod 200 extends out of the cavity S1, and one end of the moving rod 200 is located outside the mounting tube 100. The power component 400 includes a control part 401 disposed at the end of the moving rod 200. The control part 401 facilitates the movement of the moving rod 200. The control part 401 can be made by adding a handle to the end of the moving rod 200, or it can be made by bending the end of the moving rod 200 to form a handle naturally. By holding the control part 401, the moving rod 200 can be pulled and the elastic element 300 can be compressed. When the control part 401 is released, the moving rod 200 will quickly pop out and move under the elastic force of the elastic element 300.

[0050] Preferred, such as Figure 2 As shown, the mounting tube 100 has an annular protrusion 101 inside; the moving rod 200 is slidably disposed in the annular protrusion 101, and the elastic element 300 is made of a spring. The spring is sleeved on the outside of the moving rod 200, with one end fixed to the moving rod 200 and the other end fixed to the annular protrusion 101.

[0051] Alternatively, cavity S1 can be formed by a mounting cylinder, with the moving rod 200 sliding through the bottom of the mounting cylinder for limiting and guiding.

[0052] During use, by holding the control unit 401, the moving rod 200 can be pulled and the elastic element 300 can be compressed. When the control unit 401 is released, the moving rod 200 will quickly pop out and move under the elastic force of the elastic element 300.

[0053] Example 2, refer to Figures 2-5 This is the second embodiment of the present utility model. The difference between this embodiment and the first embodiment is that it also includes a limiting member 500, which includes a snap-fit ​​block 501 elastically disposed inside the cavity S1.

[0054] The movable rod 200 is provided with a groove 201, and the locking block 501 is engaged with the groove 201.

[0055] The snap-fit ​​block 501 is elastically connected to the inner wall of the mounting tube 100 by a spring or metal sheet. Under the action of the spring, the snap-fit ​​block 501 is kept against the moving rod 200. When the moving rod 200 compresses the elastic element 300 under the movement of the power component 400, the groove 201 will move synchronously to the snap-fit ​​block 501. Under the elastic force of the spring, the snap-fit ​​block 501 pops out and inserts into the groove 201, thereby limiting the movement rod 200.

[0056] like Figure 3 As shown, the movable locking block 501 is provided with an extension rod 402 that extends out of the mounting tube 100. By pulling the extension rod 402, the locking block 501 can be separated from the groove 201, and the movable rod 200 can be released.

[0057] Or such as Figure 5 and Figure 6 As shown, the snap-fit ​​block 501 is provided with a receiving groove 502; the receiving groove 502 is for the moving rod 200 to pass through, and the end of the snap-fit ​​block 501 that is originally separated from the spring passes through the cavity S1. By pressing the snap-fit ​​block 501, the snap-fit ​​block 501 can be moved to separate from the groove 201, and the moving rod 200 can be released.

[0058] The remaining structure is the same as that in Example 1.

[0059] During use, by holding the control unit 401, the moving rod 200 can be pulled and the elastic element 300 can be compressed. When the groove 201 moves synchronously to the locking block 501, the locking block 501 pops out under the elastic force of the spring and inserts into the groove 201. When the force is fully charged, when releasing the moving rod 200, it is only necessary to control the locking block 501 to separate from the groove 201. At this time, the moving rod 200 pops out under the elastic force of the elastic element 300.

[0060] Example 3, referring to Figure 6This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that the power component 400 includes a long rod 402 that is slidably disposed in the cavity S1; the long rod 402 is slidably disposed inside the mounting tube 100.

[0061] Both ends of the long rod 402 are provided with bent portions 403; the bent portions 403 at the ends of the long rod 402 can be formed by installing protrusions or by bending the long rod 402.

[0062] Alternatively, the long rod 402 can be slidably disposed outside the mounting tube 100. The mounting tube 100 has a groove 102 on its outer side. The long rod 402 is slidably disposed in the groove 102. The bottom of the groove 102 is connected to the cavity S1, which facilitates the bending part 403 to extend into the cavity S1 and contact the moving rod 200.

[0063] One of the bends 403 is engaged with the moving rod 200. The end of the bend 403 abuts against the end of the moving rod 200. The moving rod 200 can be moved synchronously by moving the long rod 402. Alternatively, the end of the moving rod 200 is stepped, and the bend 403 abuts against the step of the moving rod 200, which can also control the movement of the moving rod 200.

[0064] Another bend 403 facilitates the movement of the long rod 402.

[0065] The snap-fit ​​block 501 cooperates with the power component 400; the power component 400 is provided with a pressing part 404;

[0066] The end of the snap-fit ​​block 501 is provided with a pressing surface 503. The top of the snap-fit ​​block 501 protrudes through the cavity S1 and is located in the slide groove 102. When the pressing part 404 moves, it contacts the pressing surface 503 to control the movement of the snap-fit ​​block 501 and separate it from the groove 201. The pressing part 404 is made of a protrusion. When the pressing part 404 contacts the snap-fit ​​block 501, the groove 201 does not coincide with the snap-fit ​​block 501.

[0067] The extrusion surface 503 is a slope or arc surface. When the protrusion contacts the extrusion surface 503, it will squeeze the locking block 501 and cause it to move.

[0068] During use, when the long rod 402 moves and drives the moving rod 200 to compress the elastic element 300, the pressing part 404 will first pass through the pressing surface 503, and then continue to drive the moving rod 200 to move, so that the groove 201 and the locking block 501 are engaged and fixed. When the moving rod 200 is released, the long rod 402 only needs to be moved back, so that the pressing part 404 contacts the pressing surface 503. When the pressing part 404 passes through the locking block 501, the locking block 501 is squeezed and separated from the groove 201. At this time, the moving rod 200 is released and moves under the elastic force of the elastic element 300.

[0069] The remaining structure is the same as that in Example 2.

[0070] Example 4, refer to Figure 7 This is the fourth embodiment of the present invention. The difference between this embodiment and the second embodiment is that the power component 400 includes a long rod 402 rotatably disposed in the cavity S1; the outer side of the mounting tube 100 is provided with a sliding groove 102, one end of the long rod 402 is rotatably disposed in the sliding groove 102, and the long rod 402 can be rotatably stored in the sliding groove 102.

[0071] The long rod 402 has a bent part 403 at its end, which is inserted into the cavity S1. The bent part 403 cooperates with the moving rod 200, and the other end of the long rod 402 is located outside the cavity S1.

[0072] When the long rod 402 is rotated, the bent part 403 at the end of the long rod 402 will squeeze the moving rod 200 to move and compress the elastic element 300.

[0073] The preferred long rod 402 is rotatably connected to the mounting tube 100 by a pin. A coil spring is sleeved on the pin, and its two ends are connected to the long rod 402 and the mounting tube 100 respectively. The long rod 402 can be automatically retracted by the coil spring.

[0074] Furthermore, the contact part between the long rod 402 and the locking block 501 is the pressing part 404. When the long rod 402 rotates to the outside of the mounting tube 100, the bending part 403 can drive the moving rod 200 to move and compress the elastic element 300. It is fixed when the groove 201 and the locking block 501 overlap. Then, the long rod 402 is rotated in the opposite direction and retracted. At this time, the pressing part 404 of the long rod 402 abuts against the locking block 501. When releasing the moving rod 200, it is only necessary to press the long rod 402 to squeeze the locking block 501, so that the locking block 501 separates from the groove 201. At this time, the moving rod 200 is released and moves under the elastic force of the elastic element 300.

[0075] The remaining structure is the same as that in Example 3.

[0076] Example 5, refer to Figure 8 This is the fifth embodiment of the present invention. This embodiment provides a syringe, including a power storage mechanism, and further includes;

[0077] The injection device 600 includes a drug-reservoir needle tube 601 and a piston rod 602 slidably disposed in the drug-reservoir needle tube 601.

[0078] The drug storage needle tube 601 is connected to the installation tube 100. The moving rod 200 cooperates with the piston rod 602. The moving rod 200 can be fixedly connected to the piston rod 602. When the force is stored, the piston rod 602 can be controlled to perform liquid drawing operation to draw the liquid into the drug storage needle tube 601. When the moving rod 200 is released, the liquid in the drug storage needle tube 601 can be squeezed and sprayed out.

[0079] Example 6, refer to Figure 9 This is the sixth embodiment of the present invention. The difference between this embodiment and the fifth embodiment is that the drug storage needle tube 601 is threadedly connected to the installation tube 100, and the drug storage needle tube 601 and the installation tube 100 are detachably connected. After the drug storage needle tube 601 is filled with drug solution, it is installed in the safety ring installation tube. At this time, the moving rod 200 and the piston rod 602 are fixed.

[0080] First, the moving rod 200 is moved away from the piston rod 602 by accumulating force. When the moving rod 200 is released, it will strike the piston rod 602 first, increasing the ejection pressure of the drug storage needle 601. Then, the moving rod 200 decelerates and drives the piston rod 602 to move, squeezing out the liquid medicine in the drug storage needle 601, which is convenient for piercing the skin first and then slowly injecting the medicine.

[0081] The remaining structure is the same as that in Example 5.

[0082] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A power storage mechanism, characterized in that: include, Cavity (S1); A movable rod (200) is slidably disposed between the cavities (S1); An elastic element (300) is disposed in the moving rod (200) and the inner wall of the cavity (S1); A power element (400) is provided that controls the displacement of the moving rod (200), and the moving rod (200) compresses the elastic element (300) when it moves.

2. The energy storage mechanism according to claim 1, characterized in that: The end of the moving rod (200) extends out of the cavity (S1), and the power member (400) includes a control part (401) disposed at the end of the moving rod (200). The control unit (401) can pull the moving rod (200) to move the elastic member (300).

3. The energy storage mechanism according to claim 1, characterized in that: The power component (400) includes a long rod (402) that is slidably disposed in the cavity (S1). Both ends of the long rod (402) are provided with bent portions (403). One of the bending portions (403) cooperates with the moving rod (200), and the other bending portion (403) facilitates the movement of the long rod (402).

4. The energy storage mechanism according to claim 1, characterized in that: The power component (400) includes a long rod (402) that is rotatably disposed in the cavity (S1). The long rod (402) has a bent portion (403) at one end, which cooperates with the moving rod (200), and the other end of the long rod (402) is located outside the cavity (S1).

5. The energy storage mechanism according to any one of claims 1 to 4, characterized in that: It also includes a limiting member (500), which includes a snap-fit ​​block (501) elastically disposed inside the cavity (S1). The movable rod (200) is provided with a groove (201). The snap-fit ​​block (501) engages with the groove (201).

6. The energy storage mechanism according to claim 5, characterized in that: The snap-fit ​​block (501) is provided with a receiving groove (502); The receiving slot (502) is through which the moving rod (200) passes.

7. The energy storage mechanism according to claim 6, characterized in that: The snap-fit ​​block (501) cooperates with the power component (400); The power component (400) is provided with an extrusion part (404). The end of the snap-fit ​​block (501) is provided with a pressing surface (503). When the pressing part (404) moves, it contacts the pressing surface (503) to control the snap-fit ​​block (501) to move and separate from the groove (201).

8. The energy storage mechanism according to any one of claims 1-4 and 6, 7, characterized in that: The cavity (S1) is formed by the mounting tube (100), and the mounting tube (100) has an annular protrusion (101) inside. The movable rod (200) is slidably disposed in the annular protrusion (101).

9. A syringe, characterized in that: Including the energy storage mechanism as described in claim 8, and further comprising: The injection device (600) includes a drug reservoir (601) and a piston rod (602) slidably disposed in the drug reservoir (601). The drug storage needle tube (601) is connected to the mounting tube (100), and the moving rod (200) cooperates with the piston rod (602).

10. The syringe according to claim 9, characterized in that: The drug storage needle tube (601) is threadedly connected to the mounting tube (100); When the moving rod (200) moves, it will collide with the piston rod (602) and drive the piston rod (602) to move.

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