A needle aid

Abstract

This invention relates to a needle assist device, comprising a base, a housing, a button, a first slider, an elastic element, a second slider, a limiting member, a soft needle, and a hard needle. The housing is fixed to the base. The button includes a pressing part and a locking part. The first slider includes a hard needle fixing part, a first sliding part, and a boss. One end of the elastic element is fixed to the bottom of the boss, and the other end is fixed to the base. The second slider is positioned below the first slider and slides within a second slide rail groove. The limiting member is fixed to the base. The soft needle is disposed on the second slider. The hard needle passes through the soft needle. The needle assist device provided in this embodiment has the pressing direction consistent with the needle exit direction. Both the hard and soft needles are disposed outside the housing, making it safe, reliable, low-cost, and easy to manufacture and maintain. All functions can be completed with a single pressing action, simplifying operation. The hard needle immediately springs back to its original position upon completion of the needle assist, reducing user pain and improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a needle-assist device. Background Technology

[0002] When administering medication, a syringe is usually used for direct injection. For people who need daily injections, a syringe plunger is used to insert a soft tube into the subcutaneous tissue, and then the medication is delivered into the subcutaneous tissue through the tube. This reduces the number of injections with the needle and thus avoids pain.

[0003] Existing needle assist devices have inconsistent pressing and needle withdrawal directions, and the operation process is complicated. During use, the hard needle cannot automatically rebound, causing great pain to the user when the needle is withdrawn. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a needle assist device. The pressing direction is consistent with the needle dispensing direction, and both the hard and soft needles are located outside the outer shell. This device is safe, reliable, low-cost, and easy to manufacture and maintain. Furthermore, all functions can be completed with a single pressing action, making it simple to operate. The hard needle immediately springs back to its original position the instant the needle assist is completed, reducing user pain and improving the user experience.

[0005] In view of this, embodiments of the present invention provide a needle-aiding device, comprising:

[0006] Base;

[0007] The outer casing is fixed on the base. The outer casing is provided with a first slide rail groove, an opening groove, and a second slide rail groove. The end of the first slide rail groove is connected to the top of the opening groove.

[0008] The button includes a pressing part and a locking part; wherein the locking part is perpendicular to the pressing part and slides in the first slide rail groove;

[0009] The first slider includes a hard needle fixing part, a first sliding part, and a boss; wherein, one end of the first sliding part is connected to the hard needle fixing part, and the other end is connected to the boss. The first sliding part is slidably disposed in the second slide rail groove. The boss is disposed below the button. When the locking part is displaced in the first slide rail groove, the locking part is compressed and deformed by the first slide rail groove to clamp the boss. When the locking part is displaced to the opening groove, the locking part is disengaged from the boss.

[0010] The elastic element has one end fixed to the bottom of the boss and the other end fixed to the base;

[0011] The second slider is located below the first slider and includes a soft needle fixing part and a second sliding part. The second sliding part is connected to the soft needle fixing part and slides in the second slide rail groove.

[0012] A limiting component is fixed on the base to limit the second slider when it slides to the bottom of the second slide rail groove.

[0013] A soft needle, one end of which is set on the second slider, and the other end protrudes from the bottom of the second slider;

[0014] A hard needle pierces through the soft needle, with one end fixed to the first slider and the other end protruding from the bottom of the soft needle.

[0015] Preferably, there are two locking parts, two first slide rail grooves, and two opening grooves, and the two locking parts, two first slide rail grooves, and two opening grooves are respectively arranged opposite to each other.

[0016] Preferably, the first slide rail groove and the second slide rail groove are arranged vertically to the base.

[0017] Preferably, the base is provided with a buckle that engages with the outer shell, thereby fixing the outer shell onto the base.

[0018] Preferably, the base is provided with guide posts that pass through the boss and the elastic element.

[0019] Preferably, the pressing part and the top of the outer shell are circular, and the outer diameter of the pressing part is larger than the inner diameter of the top of the outer shell.

[0020] Preferably, the distance from the outer edge of the locking part to the central axis of the outer shell is greater than the distance from the inner edge of the first slide rail groove to the central axis of the outer shell.

[0021] Preferably, the limiting member includes a fixing part and a limiting part. The bottom end of the fixing part is fixed to the base, and the top end is connected to the top end of the limiting part. When the second slider slides to the bottom of the second slide rail groove, the top end of the second slider abuts against the bottom end of the limiting part, thereby axially limiting the second slider.

[0022] More preferably, the top of the limiting part is an inclined surface, and the side of the second slider is an inclined surface, which is adapted to the limiting part.

[0023] Preferably, the pressing part of the button moves downward under the action of external force, causing the locking part to move downward in the first slide rail groove. As the locking part is compressed and deformed by the first slide rail groove, it clamps the boss and pushes the first slider to move downward, thereby pushing the second slider, soft needle and hard needle to move downward, and causing the elastic element to store elastic potential energy. At this time, the soft needle and hard needle pierce the subcutaneous tissue.

[0024] When the locking part is displaced to the opening groove, the deformation of the locking part disappears, and it is locked in the opening groove. The locking part is disengaged from the boss, and the elastic element releases elastic potential energy, which drives the first slider and the hard needle to move upward, thereby the hard needle is disengaged from the subcutaneous tissue. At the same time, the second slider slides to the bottom of the second slide rail groove and remains stationary under the action of the limiting member, thereby the soft needle remains in the subcutaneous tissue.

[0025] The present invention provides a needle assist device in which the pressing direction is consistent with the needle dispensing direction. Both the hard needle and the soft needle are located outside the outer shell. It is safe, reliable, low-cost, and easy to manufacture and maintain. All functions can be completed with just one pressing action, making it simple to operate. The hard needle immediately springs back to its original position the moment the needle assist is completed, reducing user pain and improving the user experience. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a needle-aid device provided in an embodiment of the present invention;

[0027] Figure 2 This is an exploded view of a needle-aid device provided in an embodiment of the present invention;

[0028] Figure 3 A cross-sectional schematic diagram of a needle-aid device housing provided in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the first slider of a needle-aid device provided in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the second slider of a needle-aid device provided in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of a needle-assist device limiting component provided in an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of the initial state of a needle-aid device provided in an embodiment of the present invention;

[0033] Figure 8 A cross-sectional schematic diagram of the initial state of an acupuncture device provided in an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the structure of an acupuncture assist device in the needle insertion state according to an embodiment of the present invention;

[0035] Figure 10 A cross-sectional schematic diagram of a needle insertion state provided in an embodiment of the present invention;

[0036] Figure 11 This is a schematic diagram of the structure of a needle aid device in a reset state according to an embodiment of the present invention;

[0037] Figure 12 This is a cross-sectional schematic diagram of the needle aid device in a reset state, provided as an embodiment of the present invention. Detailed Implementation

[0038] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0039] Figure 1 This is a schematic diagram of the structure of a needle-aid device provided in an embodiment of the present invention. Figure 2 This is an exploded view of a needle-aid device provided in an embodiment of the present invention, combined with... Figure 1 and Figure 2 As shown, Figure 1 As shown, the needle aid provided in this embodiment of the invention includes a base 11, a housing 12, a button 13, a first slider 14, an elastic element 15, a second slider 16, a limiting member 17, a soft needle 18, and a hard needle 19. The structure of each part of the needle aid will be described in detail below.

[0040] The base 11 is used to fix the outer shell 12, button 13, first slider 14, elastic element 15, second slider 16, limiting member 17, soft needle 18 and hard needle 19.

[0041] Shell 12, composite Figures 1 to 3 As shown, the outer casing 12, fixed to the base 11, is provided with a first slide rail groove 121, an opening groove 122, and a second slide rail groove 123. The end of the first slide rail groove 121 connects to the top of the opening groove 122. The first slide rail groove 121 is used to slide and press the button 13, and the opening groove 122 is used to hold the button 13 in place. The second slide rail groove 123 is used to slide the first slider 14 and the second slider 16. Preferably, the first slide rail groove 121 and the second slide rail groove 123 are preferably arranged perpendicular to the base 11, so that the button 13, the first slider 14, and the second slider 16 can move vertically up and down, saving effort and making it convenient.

[0042] It should be noted that there are many ways to fix the outer shell 12 to the base 11, including but not limited to snap-fit ​​and bolt connection. In this example, in order to ensure the stable fixation and safety of the outer shell 12 on the base 11, it is preferable to provide a buckle 112 on the base 11 to snap-fit ​​the outer shell 12, thereby fixing the outer shell 12 to the base 11. The number of buckles 112 is preferably 4, which are symmetrically snapped around the outer shell 12.

[0043] Button 13 includes a pressing part 131 and a locking part 132; wherein, the pressing part 131 is used for pressing by the user, and the locking part 132 is perpendicular to the pressing part 131 and slides in the first slide rail groove 121, and can move up and down along the first slide rail groove 121. Furthermore, the distance from the outer edge of the locking part 132 to the central axis of the outer shell 12 is greater than the distance from the inner edge of the first slide rail groove 121 to the central axis of the outer shell 12. That is to say, when the locking part 132 moves up and down in the first slide rail groove 121, the locking part 132 is compressed by the first slide rail groove 121 and deforms inward along the central axis direction.

[0044] It is understood that the descent height of button 13 is related to the depth of the hard needle 19 and soft needle 18 inserted into the subcutaneous tissue. The art pre-sets the descent stroke of button 13 according to the insertion depth. In order to facilitate pressing and limit the pressing stroke of button 13, the pressing part 131 of button 13 and the top of the outer shell 12 are preferably circular, the outer shell 12 is preferably cylindrical, and the outer diameter of pressing part 131 is larger than the inner diameter of the top of outer shell 12. When pressing part 131 is pressed to the top of outer shell 12, it is restricted from moving downward, thereby limiting the descent height of button 13 and ensuring the insertion depth of subcutaneous tissue.

[0045] It should be noted that the number of the aforementioned locking part 132, first slide rail groove 121, and opening groove 122 is the same. Those skilled in the art can limit the number of the locking part 132, first slide rail groove 121, and opening groove 122 as needed. In order to ensure the stability of the button 13 when pressed, in a preferred embodiment, the number of the locking part 132, first slide rail groove 121, and opening groove 122 is two, and the two locking parts 132, first slide rail groove 121, and opening groove 122 are respectively arranged opposite to each other. That is to say, the locking part 132 is symmetrical along the central axis of the button 13. Thus, the force is evenly distributed during the pressing process, ensuring the stability when pressing.

[0046] The first slider 14, which can be considered a rigid needle slider, is used to fix the rigid needle 19 and drive the rigid needle 19 to move up and down. Figures 1 to 4As shown, the first slider 14 specifically includes a hard needle fixing part 141, a first sliding part 142, and a boss 143. The hard needle fixing part 141 is used to fix the hard needle 19 and is disposed outside the second slide rail groove 123. One end of the first sliding part 142 is connected to the hard needle fixing part 141 and slides inside the second slide rail groove 123, and can move up and down along the second slide rail groove 123. The boss 143 is connected to the other end of the first sliding part 142 and is disposed below the button 13. When the locking part 132 moves in the first slide rail groove 121, the locking part 132 is compressed inward by the first slide rail groove 121 and deforms to clamp the boss 143. That is, the button 13 moves downward and drives the first slider 14 to move accordingly. When the locking part 132 disengages from the first slide rail groove 121 and moves to the opening groove 122, the locking part 132 disengages from the boss 143, that is, the button 13 disengages from the first slider 14.

[0047] The elastic element 15 is fixed at one end to the bottom of the boss 143 and at the other end to the base 11. The elastic element 15 here includes, but is not limited to, a spring. When the button 13 clamps the boss 143 and moves downward, it compresses the elastic element 15 and stores elastic potential energy. When the button 13 is separated from the boss 143, since there is no limit above the boss 143, the elastic element 15 releases the elastic potential energy and bounces the boss 143 upward, driving the first slider 14 to move upward.

[0048] In some preferred embodiments, to ensure the stability and safety of the first slider 14 and the elastic element 15 during their up-and-down movement, the base 11 is provided with a guide post 111 through which the boss 143 and the elastic element 15 pass. That is, the boss 143 and the elastic element 15 are both fitted onto the guide post 111, and the central axes of the guide post 111, the boss 143 and the elastic element 15 coincide. On the one hand, when the boss 143 is clamped by the button 13 and moves downward, and when the boss 143 is rebounded by the elastic element 15 and moves upward, the guide post 111 can guide the boss 143. On the other hand, when the elastic element 15 is compressed and rebounds, the guide post 111 can also guide the elastic element 15, thereby ensuring stability during equipment operation.

[0049] The second slider 16 can be considered as a soft needle slider, which moves the soft needle 18 to a position below the first slider 14, in conjunction with... Figures 1 to 5 As shown, it may specifically include a soft needle fixing part 161 and a second sliding part 162. The soft needle fixing part 161 is used to fix the soft needle 18 and is disposed outside the second slide rail groove 123. The second slider 16 is connected to the soft needle fixing part 161 and is slidably disposed in the second slide rail groove 123. When the first slider 14 moves downward, it drives the second slider 16 to move downward on the second slide rail groove 123.

[0050] It is understandable that the hard needle fixing part 141 of the first slider 14 and the soft needle fixing part 161 of the second slider 16 are both located outside the outer shell 12, which facilitates the assembly and maintenance of the needle aid and reduces manufacturing costs.

[0051] Limiting component 17, combined with Figures 1 to 7 As shown, the second slider 16 is fixed to the base 11. When the second slider 16 slides to the bottom of the second slide rail groove 123, the second slider 16 is limited. In a specific example, the limiting member 17 may include a fixing part 171 and a limiting part 172. The bottom end of the fixing part 171 is fixed to the base 11, and the top end is connected to the top end of the limiting part 172. When the second slider 16 slides to the bottom of the second slide rail groove 123, the top end of the second slider 16 abuts against the bottom end of the limiting part 172, thereby axially limiting the second slider 16. Thus, the second slider 16 is fixed between the base 11 and the limiting member 17.

[0052] The soft needle 18 moves with the second slider 16. One end is set on the second slider 16, and the other end protrudes from the bottom of the second slider 16. Specifically, a soft needle groove can be set on the side wall of the second slider 16, and the soft needle 18 is fixed in the soft needle groove.

[0053] The hard needle 19 moves with the first slider 14 and passes through the soft needle 18. One end is fixed on the first slider 14, and the other end protrudes from the bottom of the soft needle 18. Specifically, a hard needle groove can be provided on the side wall of the first slider 14, and the hard needle 19 is fixed in the hard needle groove.

[0054] Based on an understanding of the structure of the needle assist device provided in this embodiment Figure 7 , 8 Figures 9, 10, 11, and 12 are schematic diagrams and cross-sectional views of an auxiliary needle device in its initial state, needle insertion state, and reset state, respectively, according to an embodiment of the present invention. The following is a detailed description in conjunction with... Figures 7 to 12 The working process is described as shown below.

[0055] When the user presses down on button 13, the pressing part 131 of button 13 moves downward under the action of external force, causing the locking part 132 to move downward in the first slide rail groove 121. As the locking part 132 is compressed inward by the first slide rail groove 121, it deforms, thereby clamping the boss 143 and pushing the first slider 14 to move downward. This pushes the second slider 16, soft needle 18 and hard needle 19 to move downward, and puts the elastic element 15 into a compressed state to store elastic potential energy. At this time, the soft needle 18 and hard needle 19 pierce the subcutaneous tissue.

[0056] The user continues to press button 13. When the locking part 132 of button 13 disengages from the first slide rail groove 121 and moves to the opening groove 122, the locking part 132 locks and fixes itself in the opening groove 122, restricting the upward axial displacement of button 13. The locking part 132 is no longer compressed by the first slide rail groove 121, and the deformation of the locking part 132 disappears, returning to its natural state. Thus, the locking part 132 disengages from the boss 143, and the axial direction of the boss 143 is no longer restricted. At this time, the elastic element 15 releases elastic potential energy, generating an upward elastic force, which drives the first slider 14 and the hard needle 19 to move upward, thereby detaching the hard needle 19 from the subcutaneous tissue. At the same time, the second slider 16 slides to the bottom of the second slide rail groove 123 and remains stationary under the action of the limiting member 17, thereby leaving the soft needle 18 in the subcutaneous tissue.

[0057] In order to prevent pain caused by the rapid insertion of the hard needle 19 when inserting into the subcutaneous tissue, in a preferred embodiment, the top of the limiting part 172 of the limiting member 17 is preferably a slope, and the side of the second slider 16 that contacts the limiting member 17 is also a slope, which is adapted to the limiting part 172. With the cooperation of the slope, the change of force during the needle insertion process will be very smooth, without step-like changes in force, thereby reducing the pain of insertion and bringing a better user experience. In addition, the slope design can also effectively limit the downward freedom of the second slider 16, so that it is initially abutted against the limiting member 17 and does not fall off.

[0058] The present invention provides a needle assist device in which the pressing direction is consistent with the needle dispensing direction. Both the hard needle and the soft needle are located outside the outer shell. It is safe, reliable, low-cost, and easy to manufacture and maintain. All functions can be completed with just one pressing action, making it simple to operate. The hard needle immediately springs back to its original position the moment the needle assist is completed, reducing user pain and improving the user experience.

[0059] In this invention, the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0061] In the description herein, the terms "a specific embodiment," "some embodiments," "one embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A needle-aiding device, characterized in that, The needle assist device includes: Base; The outer casing is fixed on the base. The outer casing is provided with a first slide rail groove, an opening groove, and a second slide rail groove. The end of the first slide rail groove is connected to the top of the opening groove. The button includes a pressing part and a locking part; wherein the locking part is perpendicular to the pressing part and slides in the first slide rail groove; The first slider includes a hard needle fixing part, a first sliding part, and a boss; wherein, one end of the first sliding part is connected to the hard needle fixing part, and the other end is connected to the boss. The first sliding part is slidably disposed in the second slide rail groove. The boss is disposed below the button. When the locking part is displaced in the first slide rail groove, the locking part is compressed and deformed by the first slide rail groove to clamp the boss. When the locking part is displaced to the opening groove, the locking part is disengaged from the boss. The elastic element has one end fixed to the bottom of the boss and the other end fixed to the base; The second slider is located below the first slider and includes a soft needle fixing part and a second sliding part. The second sliding part is connected to the soft needle fixing part and slides in the second slide rail groove. A limiting component is fixed on the base to limit the second slider when it slides to the bottom of the second slide rail groove. A soft needle, one end of which is set on the second slider, and the other end protrudes from the bottom of the second slider; A hard needle, which penetrates the soft needle, has one end fixed to the first slider and the other end protruding from the bottom of the soft needle; The limiting component includes a fixing part and a limiting part. The bottom end of the fixing part is fixed to the base, and the top end is connected to the top end of the limiting part. When the second slider slides to the bottom of the second slide rail groove, the top end of the second slider abuts against the bottom end of the limiting part, thereby axially limiting the second slider. The pressing part of the button moves downward under the action of external force, which drives the locking part to move downward in the first slide rail groove. As the locking part is compressed and deformed by the first slide rail groove, it clamps the boss and pushes the first slider to move downward, thereby pushing the second slider, soft needle and hard needle to move downward, and causing the elastic element to store elastic potential energy. At this time, the soft needle and hard needle pierce the subcutaneous tissue. When the locking part is displaced to the opening groove, the deformation of the locking part disappears, and it is locked in the opening groove. The locking part is disengaged from the boss, and the elastic element releases elastic potential energy, which drives the first slider and the hard needle to move upward, thereby the hard needle is disengaged from the subcutaneous tissue. At the same time, the second slider slides to the bottom of the second slide rail groove and remains stationary under the action of the limiting member, thereby the soft needle remains in the subcutaneous tissue.

2. The needle-aiding device according to claim 1, characterized in that, The number of the locking part, the first slide rail groove and the opening groove are all two, and the two locking parts, the first slide rail groove and the opening groove are respectively arranged opposite to each other.

3. The needle-aiding device according to claim 1, characterized in that, The first slide rail groove and the second slide rail groove are vertically mounted on the base.

4. The needle-aiding device according to claim 1, characterized in that, The base is equipped with a buckle that engages with the outer shell, thereby fixing the outer shell onto the base.

5. The needle-aiding device according to claim 1, characterized in that, The base is provided with guide posts that pass through the boss and elastic element.

6. The needle-aiding device according to claim 1, characterized in that, The pressing part and the top of the outer shell are circular, and the outer diameter of the pressing part is larger than the inner diameter of the top of the outer shell.

7. The needle-aiding device according to claim 1, characterized in that, The distance from the outer edge of the locking part to the central axis of the outer shell is greater than the distance from the inner edge of the first slide rail groove to the central axis of the outer shell.

8. The needle-aiding device according to claim 1, characterized in that, The top of the limiting part is an inclined surface, and the side of the second slider is an inclined surface, which is adapted to the limiting part.

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