Needle pushing device and medical equipment

Abstract

The embodiment of the invention belongs to the technical field of medical equipment, and relates to a needle pushing device and medical equipment. The needle pushing device comprises a guide needle assembly, a driving assembly and a reset piece, a moving path of the guide needle assembly is a first path, the guide needle assembly comprises a guide needle and a guide needle limiter and is provided with a first elastic part, the first elastic part is provided with a first abutting face, and the normal of the first abutting face intersects with the first path; the first elastic part is provided with a first buckle, a fixing groove is formed in the outer side wall of the guide needle, and the first buckle is buckled in the fixing groove and used for fixing the guide needle; the driving assembly is used for driving the guide needle limiter to move; the reset piece is provided with a first reset protrusion used for abutting against the first abutting face and driving the first buckle to move in the direction away from the fixing groove. A user can control the first reset protrusion to abut against the first abutting face, so that the first buckle is separated from the fixing groove, then the guide needle falls off, and therefore the guide needle is rapidly disassembled and replaced.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a needle pushing device and medical equipment. Background Art

[0002] In the prior art, medical equipment usually needs to intervene in the human body to detect human body information, such as a blood sugar applicator, which includes a needle pushing device, which includes a driving component that can move up and down, a guide needle for guiding the detection needle to pierce the human body, and a transmitting component, and the transmitting component includes a main body that is inserted into the skin attached to the body and transmits human body information to the terminal and a detection needle that pierces the human body and measures blood sugar from body fluids. The driving component can push the guide needle and the transmitting component toward the human skin, so that the guide needle and the detection needle pierce the human skin and make the main body fit the user's skin surface.

[0003] Because both the guide needle and the detection needle pierce the human skin, the guide needle needs to be disassembled and replaced before the blood glucose applicator can be reused. In order to disassemble the guide needle of the blood glucose applicator in the prior art, it is usually necessary to add additional parts to the needle pushing device, and the steps for disassembling the guide needle are complicated, which leads to a complex structure of the needle pushing device, high cost, and low efficiency of replacing the guide needle. Summary of the invention

[0004] The technical problem to be solved by the embodiments of the present application is that the existing needle pushing device has a complex structure, high cost, and low guide needle replacement efficiency.

[0005] In order to solve the above technical problems, the embodiment of the present application adopts the following solution:

[0006] A needle pushing device, comprising:

[0007] A guide needle assembly, wherein the moving path of the guide needle assembly is a first path, the guide needle assembly comprises a guide needle and a guide needle limiter, the guide needle limiter is sleeved on the guide needle and is provided with a first elastic portion, and a first abutment surface is provided at one end of the first elastic portion facing the moving direction of the guide needle assembly, and a normal line of the first abutment surface intersects with the first path;

[0008] A first buckle is provided on a side of the first elastic portion facing the guide needle, a fixing groove is provided on the outer wall of the guide needle, and the first buckle is buckled in the fixing groove to fix the guide needle;

[0009] A drive assembly, the drive assembly is used to drive the guide needle limiter to move;

[0010] A reset member is provided with a first reset protrusion, wherein the first reset protrusion is used to abut against the first abutting surface to drive the first buckle to move in a direction away from the fixing groove so that the guide needle is disengaged from the guide needle limiter.

[0011] Further, the guide needle limiter is provided with a mounting hole, and the first buckle and the fixing groove are both located in the mounting hole;

[0012] A normal line of the first abutting surface forms an acute angle with the first path, and an opening direction of the acute angle faces away from the driving assembly.

[0013] Furthermore, the reset member is provided with a placement groove, and along the moving direction of the guide needle assembly, the orthographic projection of the guide needle is located in the placement groove, and the placement groove is used to accommodate the guide needle that falls off from the guide needle limiter.

[0014] Further, the driving assembly comprises a first limiter, a second limiter, a first elastic member and a second elastic member, and the outer side wall of the guide needle limiter is provided with a snap-on protrusion;

[0015] The second limiter is provided with a second elastic part, and a second buckle and a second abutment surface are provided on a side of the second elastic part facing the buckle protrusion, the second buckle is buckled with the buckle protrusion to limit the movement of the guide needle limiter in a direction away from the second limiter, and the normal line of the second abutment surface intersects with the first path;

[0016] The first limiter is provided with a second reset protrusion, which is located on the moving path of the buckle protrusion and is used to abut against the second abutment surface to move the second buckle away from the buckle protrusion, so that the guide needle limiter is separated from the second limiter;

[0017] One end of the first elastic member abuts against the first limiter, and the other end abuts against the second limiter; one end of the second elastic member abuts against the second limiter, and the other end abuts against the guide needle limiter;

[0018] The second limiter is used to move in a direction away from the first limiter, so that the second limiter drives the introducer needle assembly to move.

[0019] Furthermore, the push-pin device further comprises a button assembly, one end of which is connected to the first limiter, and the other end of which is provided with a third buckle, the outer side wall of the second limiter is provided with a first positioning groove, and the third buckle is buckled with the first positioning groove to limit the second limiter from moving in a direction away from the first limiter;

[0020] The button assembly is used to rotate or move relative to the first limiter to make the third buckle engage with or separate from the first positioning groove.

[0021] Furthermore, the push-pin device further comprises a third elastic member and a rotating shaft, the outer side wall of the first limiter is provided with a mounting groove, and the rotating shaft is passed through the side wall of the mounting groove and the button assembly to rotatably connect the button assembly and the first limiter;

[0022] The third elastic member and the third buckle are respectively located at two ends of the rotating shaft, and the third elastic member is located at one end abutting against the first limiter and the other end abutting against the button assembly.

[0023] Further, a surface of the second reset protrusion facing the second limiter is a curved surface; and / or,

[0024] The side of the buckle protrusion facing the second limiter is a curved surface; and / or,

[0025] A side of the guide needle facing the guide needle limiter is a curved surface.

[0026] Furthermore, the needle pushing device also includes a launching assembly, which includes a main body and a detection needle connected to each other, the main body abuts against a side of the second limiter away from the first limiter and is used to adhere to the surface of an external object, the guide needle is inserted into the main body, and the detection needle is located inside the guide needle.

[0027] Furthermore, the needle pushing device also includes a top cover and an outer shell, the first limiter, the second limiter, and the guide needle limiter are all located in the outer shell, the first limiter is clamped on the inner wall of the outer shell, the top cover is arranged opposite to the second limiter, and is fixedly connected to the outer shell, and is used to limit the guide needle limiter from moving in a direction away from the second limiter.

[0028] Correspondingly, the present application also provides a medical device, which includes the needle pushing device described in any one of the above embodiments.

[0029] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0030] When the driving component drives the guide needle limiter to move, the guide needle is fixed by the guide needle limiter, so it will move with the guide needle limiter and then penetrate the human skin; then, the user can control the first reset protrusion to abut the first abutment surface, so that the first buckle and the fixing groove are separated, and the guide needle falls off, thereby realizing the rapid disassembly of the guide needle with the help of a simple parts structure and reducing the cost of the needle pushing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the solutions in the present application or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a structural schematic diagram of the pin pushing device in the embodiment of the present application;

[0033] Figure 2 is an exploded view of the pin pushing device in the embodiment of the present application;

[0034] Figure 3 is a ZX plane cross-sectional view of the initial state of the needle pushing device in the embodiment of the present application;

[0035] Figure 4 is a ZX plane cross-sectional view of the push-pin device in the push-out state in the embodiment of the present application;

[0036] Figure 5 is a ZX plane cross-sectional view of the push-pin device in the embodiment of the present application after the launch assembly is launched;

[0037] Figure 6 is a ZX plane cross-sectional view of the needle pushing device in the embodiment of the present application before the guide needle is disassembled by the resetting member;

[0038] Figure 7 It is a ZX plane cross-sectional view of the needle pushing device in the embodiment of the present application after the guide needle is disassembled through the resetting member;

[0039] Figure 8 is a ZY plane cross-sectional view of the initial state of the needle pushing device in the embodiment of the present application;

[0040] Fig. 9 is a ZY plane cross-sectional view of the push-pin device in the push-out state in the embodiment of the present application;

[0041] Fig.10 is a cross-sectional view of the ZY plane after the needle pushing device is pushed out and the guide needle limiter is retracted in the embodiment of the present application;

[0042] Fig.11 is a ZY plane cross-sectional view of the embodiment of the present application when the needle pushing device resets the second limiter through the reset member;

[0043] Fig.12 Schematic diagram of the connection relationship between the first limiter, the button assembly, the guide needle limiter and the reset member of the needle pushing device in the embodiment of the present application;

[0044] Fig.13is a schematic structural diagram of a guide needle limiter according to an embodiment of the present application;

[0045] Fig.14 is a schematic structural diagram of a second limiter in an embodiment of the present application;

[0046] Fig.15 It is a schematic diagram of the structure of the first limiter of an embodiment of the present application.

[0047] Reference numerals:

[0048] The first elastic member 10, the second elastic member 20, the silicone gasket 30, the guide needle 110, the fixing groove 111, the guide needle limiter 120, the first abutting surface 121, the first buckle 122, the buckle protrusion 123, the reset member 200, the first reset protrusion 210, the placement groove 220, the first limiter 300, the second reset protrusion 310, the installation groove 320, the second positioning groove 330, the second limiter 400, the second buckle 410, the second abutting surface 420, the first positioning groove 430, the fourth buckle 440, the first button 510, the third buckle 511, the second button 520, the third elastic member 610, the rotating shaft 620, the launching assembly 700, the main body 710, the detection needle 720, the top cover 800, and the outer shell 900. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0050] In this application, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inner" and "outer" refer to the outline of the device. In addition, in the description of this application, the term "including" means "including but not limited to". The terms first, second, third, etc. are used only as labels and do not impose numerical requirements or establish an order.

[0051] In this application, "and / or" describes the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0052] In the present application, "at least one" means one or more, and "plurality" means two or more. "At least one", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single items or plural items. For example, "at least one of a, b, or c", or "at least one of a, b, and c" can all mean: a, b, c, ab (i.e., a and b), ac, bc, or abc, where a, b, c can be single or multiple, respectively.

[0053] Various embodiments of the present application may be presented in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity and should not be understood as a rigid limitation on the scope of the present application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single numerical values ​​within the range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, regardless of the range. In addition, whenever a numerical range is indicated in this article, it is meant to include any quoted numbers (fractions or integers) within the indicated range. The up and down direction is the Z direction in the accompanying drawings, and the left and right directions and the horizontal direction are the X directions.

[0054] Please refer to Figures 1 to 7 , Fig.14 , an embodiment of the present application provides a needle pushing device, the needle pushing device comprising:

[0055] A guide needle assembly, the moving path of the guide needle assembly is a first path, the guide needle assembly includes a guide needle 110 and a guide needle limiter 120, the guide needle limiter 120 is sleeved on the guide needle 110, and is provided with a first elastic portion, and one end of the first elastic portion facing the moving direction of the guide needle assembly is provided with a first abutment surface 121, and the normal line of the first abutment surface 121 intersects with the first path;

[0056] A first buckle 122 is provided on one side of the first elastic portion facing the guide needle 110, and a fixing groove 111 is provided on the outer wall of the guide needle 110. The first buckle 122 is buckled in the fixing groove 111 to fix the guide needle 110;

[0057] A driving assembly, the driving assembly is used to drive the guide needle limiter 120 to move;

[0058] The reset member 200 is provided with a first reset protrusion 210 , and the first reset protrusion 210 is used to abut against the first abutting surface 121 to drive the first buckle 122 to move in a direction away from the fixing groove 111 so that the guide needle 110 is disengaged from the guide needle limiter 120 .

[0059] In this embodiment, the working process of the push pin assembly is as follows. First, please refer to Figure 3 , at this time, the guide needle assembly is in the initial state; secondly, please refer to Figure 4 When the driving assembly drives the guide needle limiter 120 to move, the guide needle 110 is fixed by the guide needle limiter 120, so it will move with the guide needle limiter 120 and then pierce the human skin; then, please refer to Figure 5 After the guide needle 110 penetrates the human skin, it does not need to stay in the human body, but needs to be retracted to the initial position, because the guide needle 110 only plays the role of guiding the detection needle 720 to penetrate the human body. At this time, the needle pushing device can be controlled to stay away from the human body. Finally, only the transmitting assembly 700 exists on the human body.

[0060] Please refer to Figure 6 , the guide needle assembly is now complete Figure 3 In order to retract the guide needle 110, the user can drive the reset member 200 so that the reset member 200 approaches the guide needle limiter 120 from bottom to top, and the first reset protrusion 210 abuts against the first abutting surface 121. Since the normal of the first abutting surface 121 intersects with the first path, when the first reset protrusion 210 continues to move toward the first abutting surface 121, the first abutting surface 121 is subjected to a horizontal force away from the guide needle 110. Under the action of the horizontal force, the first elastic portion will deform in a direction away from the fixing groove 111, thereby releasing the fastening of the first buckle 122 and the fixing groove 111, and allowing the guide needle 110 to naturally fall off downward.

[0061] In summary, the needle pushing device of the embodiment of the present application can efficiently disassemble and replace the guide needle 110 by simply moving the reset member 200, so its production and replacement costs are low. It should be understood that the plane where the first path in this solution is located can be the ZY plane.

[0062] For further information, please refer to Figures 2 to 7 , the guide needle limiter 120 is provided with a mounting hole (not marked in the figure), and the first buckle 122 and the fixing groove 111 are both located in the mounting hole;

[0063] The normal line of the first abutting surface 121 forms an acute angle with the first path, and the opening direction of the acute angle faces away from the driving assembly.

[0064] In this embodiment, while ensuring that the first clip 122 is disengaged from the fixing groove 111, the smaller the acute angle, the shorter the distance that the first reset protrusion 210 needs to move from bottom to top. Therefore, the depth of the first reset protrusion 210 inserted into the mounting hole can be controlled by adjusting the acute angle.

[0065] For further information, please refer to Figure 6 and Figure 7 The resetting member 200 is provided with a placement groove 220 . Along the moving direction of the guide needle assembly, the orthographic projection of the guide needle 110 is located in the placement groove 220 . The placement groove 220 is used to accommodate the guide needle 110 that falls off from the guide needle limiter 120 .

[0066] In this embodiment, since the orthographic projection of the guide needle 110 is located in the placement groove 220, when the guide needle 110 falls off, it will just fall off in the placement groove 220, thereby preventing the guide needle 110 from falling off or accidentally piercing the user's skin. It should be understood that the depth of the placement groove 220 can be greater than or equal to the guide needle 110, so as to completely accommodate the guide needle 110.

[0067] Further, Figure 6 to Figure 7 The cross-section of Figures 8 to 11 The section plane is at a 90 degree angle. Figures 2 to 3 , Figures 8 to 12 , Figure 14 to Figure 15 The driving assembly includes a first limiter 300, a second limiter 400, a first elastic member 10 and a second elastic member 20, and the outer side wall of the guide needle limiter 120 is provided with a snap protrusion 123;

[0068] The second limiter 400 is provided with a second elastic part, and a second buckle 410 and a second abutting surface 420 are provided on one side of the second elastic part facing the buckle protrusion 123. The second buckle 410 is buckled with the buckle protrusion 123 to limit the guide needle limiter 120 from moving in a direction away from the second limiter 400, and a normal line of the second abutting surface 420 intersects with the first path;

[0069] The first limiter 300 is provided with a second reset protrusion 310, which is located on the moving path of the buckle protrusion 123 and is used to abut against the second abutting surface 420 to move the second buckle 410 in a direction away from the buckle protrusion 123, so that the guide needle limiter 120 is separated from the second limiter 400;

[0070] One end of the first elastic member 10 abuts against the first limiter 300 , and the other end abuts against the second limiter 400 ; one end of the second elastic member 20 abuts against the second limiter 400 , and the other end abuts against the guide needle limiter 120 ;

[0071] The second limiter 400 is used to move in a direction away from the first limiter 300 , so that the second limiter 400 drives the guide needle assembly to move.

[0072] In this embodiment, please refer to Figure 3 and Figure 8At this time, the first elastic member 10 is in a compressed state, the second limiter 400 is close to the first limiter 300, and is fixed by an external device (button assembly) to limit it from being away from the first limiter 300. As can be seen from the figure, the second buckle 410 is buckled with the buckle protrusion 123. If the second limiter 400 moves in a direction away from the first limiter 300, it will drive the guide needle limiter 120 provided with the buckle protrusion 123 to move;

[0073] Please refer to Fig. 9 At this time, the first elastic member 10 is already in a released state, and it provides elastic force to make the second limiter 400 move in a direction away from the first limiter 300. During the movement of the second limiter 400, since the second reset protrusion 310 is provided on the first limiter 300, the second abutting surface 420 moves relatively toward the second reset protrusion 310. When the second reset protrusion 310 contacts the second abutting surface 420, since the normal line of the second abutting surface 420 intersects with the first path, the second abutting surface 420 is subjected to a horizontal force, so that the second elastic part is deformed in the reverse direction away from the buckle protrusion 123, thereby releasing the buckle relationship between the second buckle 410 and the buckle protrusion 123;

[0074] Please refer to Fig.10 When the second buckle 410 is released from the buckle protrusion 123, the guide needle limiter 120 will move away from the second limiter 400. Therefore, during the use of the needle pushing device, once the guide needle 110 moves to pierce the human skin, it can automatically retract to prevent the guide needle 110 from staying in the human body and causing harm or causing injury to the human body due to accidental touch.

[0075] Please refer to Fig.11 When the reset member 200 is used to push the second limiter 400 from bottom to top, the second buckle 410 in the second limiter 400 will move toward the already detached guide needle limiter 120 until the second buckle 410 is engaged with the upper part of the buckle protrusion 123, thereby again limiting the movement of the guide needle limiter 120. If it is necessary to drive the guide needle assembly to move again, it is only necessary to drive the second limiter 400 to move downward, that is, the needle pushing device of this embodiment can quickly complete the buckling installation of the guide needle limiter 120 and the second limiter 400.

[0076] In summary, the needle pushing device of the embodiment of the present application can realize the automatic retraction function of the guide needle 110, and the buckle installation efficiency of the guide needle limiter 120 and the second limiter 400 is high. It should be understood that the first elastic member 10 and the second elastic member 20 can be springs. The second elastic part can also be set on the guide needle limiter 120, and the buckle protrusion 123 is set on the second limiter 400. At this time, the cooperation between the second elastic part and the buckle protrusion 123 can still play a role in limiting the movement of the guide needle limiter 120. The plane where the first path in this scheme is located can be the ZX plane.

[0077] For further information, please refer to Figures 1 to 4 and Fig.12 The push-pin device further includes a button assembly, one end of which is connected to the first limiter 300, and the other end of which is provided with a third buckle 511, and the outer wall of the second limiter 400 is provided with a first positioning groove 430, and the third buckle 511 is buckled in the first positioning groove 430 to limit the second limiter 400 from moving in a direction away from the first limiter 300;

[0078] The button assembly is used to rotate or move relative to the first limiter 300 to make the third buckle 511 engage with or disengage from the first positioning groove 430 .

[0079] In this embodiment, the button assembly includes a first button 510 and a second button 520. The third buckle 511 located in the button assembly can be buckled in the first positioning groove 430, thereby preventing the second limiter 400 from moving in a direction away from the first limiter 300. When the push-pin device needs to be activated, it is only necessary to drive the button assembly to rotate so that the third buckle 511 moves from the first positioning groove 430. Figure 3 The position shown is rotated rightward to disengage from the first positioning slot 430 , thereby releasing the lock on the second limiter 400 , thereby allowing the second limiter 400 to drive the guide needle assembly to move downward.

[0080] For further information, please refer to Figures 1 to 4 , Fig.12 and Fig.15 The push-pin device further includes a third elastic member 610 and a rotating shaft 620. The outer wall of the first limiter 300 is provided with a mounting groove 320. The rotating shaft 620 penetrates the side wall of the mounting groove 320 and the button assembly to rotatably connect the button assembly and the first limiter 300.

[0081] The third elastic member 610 and the third buckle 511 are respectively located at two ends of the rotating shaft 620 , and the third elastic member 610 is located at one end abutting against the first limiter 300 , and the other end abutting against the button assembly.

[0082] In this embodiment, the third elastic member 610 and the third buckle 511 are respectively located at the two ends of the rotating shaft 620, and the third elastic member 610 is located at one end abutting against the first limiter 300 and the other end abutting against the button assembly, so the third buckle 511 is continuously subjected to the direction toward the second limiter 400 ( Figure 3 Therefore, when the user pushes the second limiter 400 from bottom to top through the reset member 200 to reset, the third buckle 511 will automatically snap into the first positioning groove 430 without manually driving the third buckle 511 to snap into place, thereby achieving the purpose of improving the reset efficiency of the push-pin device.

[0083] For further information, please refer to Figure 6 and Figure 8 , a side of the second reset protrusion 310 facing the second limiter 400 is an arc surface; and / or,

[0084] The side of the buckle protrusion 123 facing the second limiter 400 is a curved surface; and / or,

[0085] The surface of the guide needle 110 facing the guide needle limiter 120 is a curved surface.

[0086] In this embodiment, the side of the second reset protrusion 310 facing the second limiter 400 is an arc surface, which can guide the second reset protrusion 310 to pass through the upper end of the second elastic part when the first limiter 300 and the second limiter 400 are installed, reducing the friction coefficient between the second reset protrusion 310 and the second elastic part, thereby improving the installation efficiency of the needle pushing device. The side of the buckle protrusion 123 facing the second limiter 400 is an arc surface, which can guide the horizontal movement of the second buckle 410 when the second buckle 410 is re-engaged with the buckle protrusion 123, thereby avoiding the second buckle 410 and the buckle from colliding and wearing. The side of the guide needle 110 facing the guide needle limiter 120 is an arc surface, which can avoid the guide needle 110 and the first buckle 122 from rigid contact and colliding and wearing when the guide needle 110 is installed from bottom to top.

[0087] It should be understood that the upper end of the second buckle 410 can be chamfered to match the arc surface of the buckle protrusion 123. The lower end of the first buckle 122 can be chamfered to match the arc surface of the guide needle 110, and the chamfer of the lower end of the first buckle 122 can be located in the same plane as the first abutment surface 121.

[0088] For further information, please refer to Figures 2 to 5 The needle pushing device also includes a launching assembly 700, which includes a main body 710 and a detection needle 720 connected to each other. The main body 710 abuts against a side of the second limiter 400 away from the first limiter 300 and is used to adhere to the surface of an external object. The guide needle 110 is inserted into the main body 710, and the detection needle 720 is located inside the guide needle 110.

[0089] In this embodiment, the main body 710 is used to be attached to the surface of an object, and the detection needle 720 is used to detect human body information. When the transmitting assembly 700 is attached to the second limiter 400, its structure is as follows: Figure 3 As shown, the guide needle 110 passes through the main body 710, and the detection needle 720 is located in the guide needle 110. When the guide needle 110 guides the detection needle 720 to pierce the human body, the transmitting assembly 700 will stay on the surface of the human skin, and the guide needle 110 will return to the initial position.

[0090] For further information, please refer to Figure 2 , Figures 9 and 10 The needle pushing device also includes a top cover 800 and a shell 900. The first limiter 300, the second limiter 400, and the guide needle limiter 120 are all located in the shell 900. The first limiter 300 is clamped on the inner wall of the shell 900. The top cover 800 is arranged opposite to the second limiter 400 and is fixedly connected to the shell 900, and is used to limit the guide needle limiter 120 from moving in a direction away from the second limiter 400.

[0091] In this embodiment, the top cover 800 can limit the movement of the guide needle limiter 120 in the direction away from the second limiter 400, thereby preventing the guide needle limiter 120 from moving too far and falling off due to accidental touching, thereby preventing the guide needle 110 from piercing the user's skin after falling off.

[0092] For further information, please refer to Figures 2 to 15 The installation steps of the push-pin device of the embodiment of the present application are as follows:

[0093] First, the first button 510 and the second button 520 are assembled to form a button assembly, and the third elastic member 610 is inserted into a circular groove (not shown in the figure) provided on the second button 520. Then, the button assembly and the third elastic member 610 are placed into the mounting groove 320 of the first limiter 300, and fixedly connected with the first limiter 300 through the rotating shaft 620.

[0094] Secondly, place the second elastic member 20 in the first limiter 300, and then insert the raised part in the middle of the second limiter 400 into the middle of the second elastic member 20, so that one end of the second elastic member 20 abuts against the first limiter 300, and the other end abuts against the second limiter 400. At this time, the outer wall of the second limiter 400 is also provided with a fourth clip 440, and the outer wall of the first limiter 300 is also provided with a second positioning groove 330. The fourth clip 440 can be engaged with the second positioning groove 330, so as to limit the distance that the second limiter 400 moves away from the first limiter 300, thereby preventing the second limiter 400 from falling off.

[0095] Next, the silicone gasket 30 is placed on the end of the guide needle limiter 120 facing the top cover 800, the first elastic member 10 is passed through the first limiter 300, and the guide needle limiter 120 is placed in the second limiter 400, so that one end of the first elastic member 10 abuts against the guide needle limiter 120, and the other end abuts against the second limiter 400. At this time, the second buckle 410 of the second limiter 400 is buckled with the buckle protrusion 123, so that the guide needle limiter 120 can move with the second limiter 400.

[0096] Then, the assembled structures are placed together in the housing 900, and the first limiter 300 can be fixed with the housing 900 by interference fit or snap fit, and the first limiter 300 is fixedly connected with the housing 900. The top cover 800 can limit the displacement of the guide needle limiter 120, and can be snap-fitted or connected with the housing 900 by the ribs on the housing 900.

[0097] Finally, the guide needle 110 is passed through the main body 710 of the launch assembly 700 so that the guide needle 110 is sleeved on the detection needle 720, and then the launch assembly 700 is attached to the second limiter 400 from bottom to top so that it is located in the slot in the second limiter 400. After the launch assembly 700 is attached to the second limiter 400, the guide needle 110 is also located in the mounting hole, and the first buckle 122 is buckled on the guide needle 110, so that the guide needle 110 can move together with the guide needle limiter 120.

[0098] Accordingly, please refer to Figures 1 to 11 The present application also provides a medical device, which includes any one of the needle pushing devices in the above embodiments.

[0099] In this embodiment, because the medical device includes any one of the needle pushing devices in the above embodiments, the medical device can efficiently disassemble and replace the guide needle 110 by simply moving the reset member 200, and the production and replacement costs are low. The medical device includes an applicator, an injection device, an acupuncture device, etc.

[0100] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

[0101] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, combinations, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A needle pushing device, characterized in that: The needle pushing device comprises: A guide needle assembly, wherein the moving path of the guide needle assembly is a first path, the guide needle assembly comprises a guide needle and a guide needle limiter, the guide needle limiter is sleeved on the guide needle and is provided with a first elastic portion, and a first abutment surface is provided at one end of the first elastic portion facing the moving direction of the guide needle assembly, and a normal line of the first abutment surface intersects with the first path; A first buckle is provided on a side of the first elastic portion facing the guide needle, a fixing groove is provided on the outer wall of the guide needle, and the first buckle is buckled in the fixing groove to fix the guide needle; A drive assembly, the drive assembly is used to drive the guide needle limiter to move; A reset member is provided with a first reset protrusion, wherein the first reset protrusion is used to abut against the first abutting surface to drive the first buckle to move in a direction away from the fixing groove so that the guide needle is disengaged from the guide needle limiter.

2. The needle pushing device according to claim 1, characterized in that: The guide needle limiter is provided with a mounting hole, and the first buckle and the fixing groove are both located in the mounting hole; A normal line of the first abutting surface forms an acute angle with the first path, and an opening direction of the acute angle faces away from the driving assembly.

3. The needle pushing device according to claim 1, characterized in that: The reset member is provided with a placement groove, and along the moving direction of the guide needle assembly, the orthographic projection of the guide needle is located in the placement groove, and the placement groove is used to accommodate the guide needle that falls off from the guide needle limiter.

4. The needle pushing device according to claim 2, characterized in that: The driving assembly comprises a first limiter, a second limiter, a first elastic member and a second elastic member, and the outer side wall of the guide needle limiter is provided with a snap-on protrusion; The second limiter is provided with a second elastic part, and a second buckle and a second abutment surface are provided on a side of the second elastic part facing the buckle protrusion, the second buckle is buckled with the buckle protrusion to limit the movement of the guide needle limiter in a direction away from the second limiter, and the normal line of the second abutment surface intersects with the first path; The first limiter is provided with a second reset protrusion, which is located on the moving path of the buckle protrusion and is used to abut against the second abutment surface to move the second buckle away from the buckle protrusion, so that the guide needle limiter is separated from the second limiter; One end of the first elastic member abuts against the first limiter, and the other end abuts against the second limiter; one end of the second elastic member abuts against the second limiter, and the other end abuts against the guide needle limiter; The second limiter is used to move in a direction away from the first limiter, so that the second limiter drives the introducer needle assembly to move.

5. The needle pushing device according to claim 4, characterized in that: The push-pin device further includes a button assembly, one end of which is connected to the first limiter, and the other end of which is provided with a third buckle, the outer side wall of the second limiter is provided with a first positioning groove, and the third buckle is buckled with the first positioning groove to limit the second limiter from moving in a direction away from the first limiter; The button assembly is used to rotate or move relative to the first limiter to make the third buckle engage with or separate from the first positioning groove.

6. The needle pushing device according to claim 5, characterized in that: The push-pin device further includes a third elastic member and a rotating shaft, the outer side wall of the first limiter is provided with a mounting groove, and the rotating shaft is passed through the side wall of the mounting groove and the button assembly to rotatably connect the button assembly and the first limiter; The third elastic member and the third buckle are respectively located at two ends of the rotating shaft, and the third elastic member is located at one end abutting against the first limiter and the other end abutting against the button assembly.

7. The needle pushing device according to claim 4, characterized in that: The second reset protrusion has a curved surface facing the second limiter; and / or, The side of the buckle protrusion facing the second limiter is a curved surface; and / or, A side of the guide needle facing the guide needle limiter is a curved surface.

8. The needle pushing device according to claim 4, characterized in that: The needle pushing device also includes a launching assembly, which includes a main body and a detection needle connected to each other. The main body abuts against a side of the second limiter away from the first limiter and is used to adhere to the surface of an external object. The guide needle is inserted into the main body, and the detection needle is located inside the guide needle.

9. The needle pushing device according to claim 4, characterized in that: The needle pushing device also includes a top cover and an outer shell. The first limiter, the second limiter, and the guide needle limiter are all located inside the outer shell. The first limiter is clamped on the inner wall of the outer shell. The top cover is arranged opposite to the second limiter and is fixedly connected to the outer shell to limit the guide needle limiter from moving in a direction away from the second limiter.

10. A medical device, characterized in that: The medical device comprises the needle pushing device according to any one of claims 1 to 9.

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