Automatic injection pen capable of preventing mistaken touch
By setting the combination of limiting parts and buttons on the automatic injection pen, the limiting parts need external force to be driven to separate, which solves the problem of buttons accidentally touching and improves safety and utilization of medicine.
Patent Information
- Application Number
- CN202420918644.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-04-28
AI Technical Summary
The buttons of existing automatic injection pens are easily touched by mistake, resulting in safety hazards and waste of medicine.
An automatic injection pen with anti-miss touch is designed. By setting limiting parts and buttons on the main body of the injection pen, the limiting parts need external force to be driven to separate from the button, avoiding the buttons accidentally touching when not in use, and ensuring that the buttons can only be used. Press to trigger the injection.
It effectively reduces safety risks, avoids accidentally touching the button, and ensures the safety of the automatic injection pen and the saving of the medicine liquid.
Smart Images
Figure CN222357835U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, in particular to an automatic injection pen that prevents accidental touches. Background Art
[0002] An automatic injection pen is a medical device that can replace manual injection. In related technologies, the automatic injection pen triggers automatic injection by pressing a button. However, the button of the automatic injection pen with this structure is easily touched by mistake, which may cause safety hazards and waste liquid medicine. Utility Model Content
[0003] The purpose of the utility model is to provide an automatic injection pen with an anti-mistouch function, which can reduce safety hazards.
[0004] In order to achieve the above-mentioned purpose, the utility model provides an automatic injection pen that prevents accidental touching, including an injection pen body, a limiter and a button, the injection pen body having a mounting end, the limiter being arranged on the outer wall of the mounting end, and the limiter being movable along the length direction of the injection pen body under the action of an external force, the button having a mounting groove, the end of the mounting end being inserted into the mounting groove, the button being connected to the injection pen body and being movable along the length direction of the injection pen body, and the limiter being in contact with the button.
[0005] In a specific embodiment of the utility model, the mounting end is cylindrical, the outer peripheral wall of the mounting end is provided with threads, the limiting member is an annular structure, the inner wall of the limiting member has screw threads, and the screw threads are engaged with the threads.
[0006] In a specific embodiment of the present invention, the screw thread includes a plurality of thread bodies, the thread bodies are engaged with the thread, and the plurality of thread bodies are arranged at intervals along the spiral direction of the thread.
[0007] In a specific embodiment of the utility model, the injection pen body has a first limit block and a second limit block, the first limit block and the second limit block are located in the thread, and the first limit block and the second limit block define a positioning groove;
[0008] When the limiting member contacts the button, part of the tooth body is located in the positioning groove, and both the first limiting block and the second limiting block contact the tooth body.
[0009] In a specific embodiment of the utility model, the injection pen body further has a third limit block, which is arranged in the thread and located at one end of the thread away from the button, and there is a gap between the third limit block and the end of the thread.
[0010] In a specific embodiment of the utility model, the mounting end includes a first mounting body and a second mounting body, the first mounting body and the second mounting body are both cylindrical, and the outer diameter of the first mounting body is smaller than the outer diameter of the second mounting body, the first mounting body is inserted into the mounting groove, and the second mounting body is connected to the limiter;
[0011] The limiting member has a limiting protrusion, which is annular and arranged on the inner wall of the limiting member and located at one end of the limiting member close to the button. The limiting protrusion is coaxially arranged with the limiting member, and the inner diameter of the limiting protrusion is greater than the outer diameter of the first mounting body;
[0012] When the limiting member contacts the button, there is a distance between the limiting protrusion and the second mounting body in the length direction of the injection pen body.
[0013] In a specific embodiment of the utility model, the outer wall of the first mounting body is provided with a connecting groove, and the connecting groove is annular and is coaxially arranged with the first mounting body;
[0014] The mounting groove is circular, and the inner wall of the mounting groove has a connecting protrusion, which is annular and coaxially arranged with the mounting groove;
[0015] Wherein, the connecting protrusion is inserted into the connecting groove, and in the length direction of the injection pen body, the length of the connecting groove is greater than the length of the connecting protrusion.
[0016] In a specific embodiment of the utility model, an anti-roll structure is provided on the outer wall of the limiting member.
[0017] In a specific embodiment of the present invention, the anti-roll structure is rod-shaped, and the anti-roll structure extends along the length direction of the injection pen body.
[0018] In a specific embodiment of the utility model, the injection pen body comprises a shell, a firing mechanism and an injection mechanism, the shell has the mounting end, the end of the mounting end is provided with an opening connected to the shell, the firing mechanism and the injection mechanism are both arranged in the shell, the injection mechanism is arranged on a side of the firing mechanism away from the mounting end, and the firing mechanism is used to drive the injection mechanism to work;
[0019] The button includes a connecting body and a pressing body, the connecting body is provided with the mounting groove, the pressing body is arranged on the bottom surface of the mounting groove, the pressing body passes through the opening, the pressing body is used to trigger the firing mechanism to work, and the limiting member is in contact with the connecting body.
[0020] The utility model embodiment provides an automatic injection pen to prevent accidental touch, and compared with the prior art, its beneficial effects are:
[0021] In the anti-accidental-touch automatic injection pen of the embodiment of the utility model, the limiter needs to be driven by external force to separate from the button. Therefore, when the automatic injection pen is not in use, the button will be limited in position by the limiter and cannot move along the length direction of the injection pen body, which can prevent the button from being accidentally touched and reduce safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a structural diagram of an automatic injection pen that prevents accidental touches according to an embodiment of the utility model;
[0023] Figure 2 is a cross-sectional view of an automatic injection pen for preventing accidental touch according to an embodiment of the utility model;
[0024] Figure 3 This utility model embodiment Figure 2 A magnified schematic diagram of H in the middle;
[0025] Figure 4 It is a partial structural diagram of the housing of the embodiment of the utility model;
[0026] Figure 5 It is a structural diagram of a button of an embodiment of the utility model;
[0027] Figure 6 It is a structural diagram of a position limiting member according to an embodiment of the utility model.
[0028] In the figure, 1. injection pen body; 11. shell; 110. open mouth; 12. firing mechanism; 13. injection mechanism; 10. mounting end; 10A. thread; 10B. positioning groove; 101. first mounting body; 1011. connecting groove; 102. second mounting body; 2. limiting member; 201. limiting protrusion; 21. screw thread; 211. thread body; 3. button; 31. connecting body; 32. pressing body; 301. mounting groove; 3011. connecting protrusion; 4. anti-roll structure; 100. first limiting block; 200. second limiting block; 300. third limiting block. DETAILED DESCRIPTION
[0029] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0030] like Figure 1-6As shown, an anti-mistouch automatic injection pen according to an embodiment of the utility model includes an injection pen body 1, a limiter 2 and a button 3. The injection pen body 1 has a mounting end 10, the limiter 2 is arranged on the outer wall of the mounting end 10, and the limiter 2 can move along the length direction of the injection pen body 1 under the action of external force, the button 3 has a mounting groove 301, the end of the mounting end 10 is inserted into the mounting groove 301, the button 3 is connected to the injection pen body 1 and can move along the length direction of the injection pen body 1, and the limiter 2 is in contact with the button 3.
[0031] Specifically, the stopper 2 needs to be driven by an external force to separate from the button 3. Therefore, when the automatic injection pen is not in use, the button 3 is limited by the stopper 2 and cannot move along the length direction of the injection pen body 1, which can prevent the button 3 from being accidentally touched and reduce safety hazards. Before using the automatic injection pen, the user needs to forcefully drive the stopper 2 to move it away from the button 3 in the length direction of the injection pen body 1 to separate the stopper 2 from the button 3, and then press the button 3 to start the injection work of the automatic injection pen. The structure is simple and easy to operate.
[0032] In this embodiment, the mounting end 10 is cylindrical, the outer peripheral wall of the mounting end 10 is provided with a thread 10A, the stopper 2 is an annular structure, the inner wall of the stopper 2 is provided with a screw thread 21, and the screw thread 21 is engaged with the thread 10A. In other embodiments, the thread 10A can be provided on the inner wall of the stopper 2, and the screw thread 21 is provided on the outer peripheral wall of the mounting end 10, which can also realize the anti-mistouch function of the automatic injection pen. Based on the structure of the thread 10A and the screw thread 21, the user can separate the stopper 2 from the button 3 by rotating the stopper 2 with force, and the structure is reliable and easy to operate.
[0033] In other embodiments, a slide groove is provided on the outer wall of the mounting end 10, and the length direction of the slide groove is parallel to the length direction of the injection pen body 1. The limiter 2 is clamped and fixed in the slide groove and can slide along the length direction of the slide groove under the action of external force. When the limiter 2 is clamped and fixed, it contacts the button 3. Based on this, the anti-accidental touch function of the automatic injection pen can also be realized.
[0034] Furthermore, the screw thread 21 includes three teeth 211, which mesh with the thread 10A, and the three teeth 211 are arranged at intervals along the spiral direction of the thread 10A. The screw thread 21 of this structure is an intermittent screw thread 21, which has a simple structure and is easy to process. Moreover, when the stopper 2 rotates, the friction between the screw thread 21 and the thread 10A is relatively small, which is conducive to the user rotating the stopper 2. In practical applications, the screw thread 21 can also be four, five or more, and this embodiment does not limit this.
[0035] Furthermore, the injection pen body 1 has a first limit block 100 and a second limit block 200, the first limit block 100 and the second limit block 200 are located in the thread 10A, and the first limit block 100 and the second limit block 200 define a positioning groove 10B; when the limit member 2 contacts the button 3, one of the tooth bodies 211 is located in the positioning groove 10B, and the first limit block 100 and the second limit block 200 are both in contact with the tooth body 211. At this time, the first limit block 100 and the second limit block 200 limit the position of the tooth body 211, and the limit member 2 can be more stably connected to the mounting end 10. The user needs to first rotate the limit member 2 with force to make the tooth body 211 disengage from the positioning groove 10B before rotating the limit member 2, which can further improve the anti-accidental touch performance of the automatic injection pen.
[0036] Specifically, the side surfaces of the first limit block 100 and the second limit block 200 facing the center of the positioning groove 10B and facing away from the center of the positioning groove 10B are both inclined surfaces, and the inclined surface facing the center of the positioning groove 10B, its end away from the mounting end 10 is offset away from the center of the positioning groove 10B, and the inclined surface facing away from the center of the positioning groove 10B, its end away from the mounting end 10 is offset toward the center of the positioning groove 10B, thereby facilitating the first limit block 100 and the second limit block 200 to detach from or enter the positioning groove 10B. The material of the limit member 2 is plastic, which has a certain deformation performance, and is more conducive to the first limit block 100 and the second limit block 200 to detach from or enter the positioning groove 10B.
[0037] In other embodiments, when the limit member 2 contacts the button 3, there may be two teeth 211 located in the positioning groove 10B, the first limit block 100 contacts one of the teeth 211, and the second limit block 200 contacts the other tooth 211. Based on this, the limit member 2 can also be stably connected to the mounting end 10, and the present invention does not impose any restrictions on this.
[0038] In the present embodiment, the injection pen body 1 further has a third limit block 300, which is arranged in the thread 10A and at the end of the thread 10A away from the button 3. Specifically, there is a gap between the end of the thread 10A and the third limit block 300, and the gap can accommodate a tooth body 211. When the user rotates the limit member 2, the tooth body 211 can pass through the third limit block 300 and enter the gap. When the tooth body 211 passes through the third limit block 300, the user will feel a resistance. When the user feels the resistance, it indicates that the limit member 2 has been rotated to the bottom. Based on this, the setting of the third limit block 300 can serve as a reminder, which can make the use of the automatic injection pen more convenient. In addition, the setting of the third limit block 300 requires the limit member 2 to rotate under the action of external force, which plays a limiting role.
[0039] Further, the mounting end 10 includes a first mounting body 101 and a second mounting body 102, the first mounting body 101 and the second mounting body 102 are both cylindrical, and the outer diameter of the first mounting body 101 is smaller than the outer diameter of the second mounting body 102, the first mounting body 101 is inserted into the mounting groove 301, and the second mounting body 102 is connected to the limiting member 2, that is, the second mounting body 102 is provided with the above-mentioned thread 10A; the limiting member 2 has a limiting protrusion 201, the limiting protrusion 201 is annular, the limiting protrusion 201 is arranged on the inner wall of the limiting member 2 and is located at one end of the limiting member 2 close to the button 3, and the limiting protrusion 201 is the same as the limiting member 2 The axis is set, and the inner diameter of the limiting protrusion 201 is larger than the outer diameter of the first mounting body 101; when the limiting member 2 contacts the button 3, there is a distance between the limiting protrusion 201 and the second mounting body 102 in the length direction of the injection pen body 1. The setting of this distance ensures that the limiting member 2 can move along the length direction of the injection pen body 1, and the setting of the limiting protrusion 201 can limit the maximum distance of the limiting member 2 when it moves. When the side of the limiting protrusion 201 facing away from the button 3 contacts the second mounting body 102, the limiting member 2 cannot continue to move. Based on this, the user can be further prevented from excessively rotating the limiting member 2 to reduce safety hazards.
[0040] In this embodiment, a connecting groove 1011 is provided on the outer wall of the first mounting body 101, and the connecting groove 1011 is annular and coaxially arranged with the first mounting body 101; the mounting groove 301 is circular, and the inner wall of the mounting groove 301 has a connecting protrusion 3011, and the connecting protrusion 3011 is annular and coaxially arranged with the mounting groove 301; wherein, the connecting protrusion 3011 is inserted into the connecting groove 1011, and in the length direction of the injection pen body 1, the length of the connecting groove 1011 is greater than the length of the connecting protrusion 3011. Specifically, the connecting protrusion 3011 and the connecting groove 1011 cooperate to connect the button 3 to the mounting end 10, and the button 3 can move along the length direction of the injection pen body 1, with a simple structure and convenient connection.
[0041] In actual application, the automatic injection pen is cylindrical in shape as a whole and is easy to roll when laid flat. Based on this, in this embodiment, an anti-roll structure 4 is provided on the outer wall of the limiting member 2 to prevent the automatic injection pen from rolling and breaking.
[0042] Furthermore, the anti-roll structure 4 is rod-shaped and extends along the length direction of the injection pen body 1. Specifically, the rod-shaped anti-roll structure 4 can be used as a fulcrum when the user rotates the limiter 2, which is convenient for the user to apply force and makes the use of the automatic injection pen more convenient.
[0043] In this embodiment, the injection pen body 1 includes a shell 11, a firing mechanism 12 and an injection mechanism 13. The shell 11 has a mounting end 10. The end of the mounting end 10 is provided with an opening 110 connected to the shell 11. The firing mechanism 12 and the injection mechanism 13 are both arranged in the shell 11. The injection mechanism 13 is arranged on the side of the firing mechanism 12 away from the mounting end 10. The firing mechanism 12 is used to drive the injection mechanism 13 to work; the button 3 includes a connecting body 31 and a pressing body 32. The connecting body 31 is provided with a mounting groove 301. The pressing body 32 is arranged on the bottom surface of the mounting groove 301. The pressing body 32 passes through the opening 110. The pressing body 32 is used to trigger the firing mechanism 12 to work, and the limit member 2 is in contact with the connecting body 31. Specifically, the firing mechanism 12 includes a claw, a plunger and a spring, the claw is arranged on the inner wall of the housing 11, and the injection mechanism 13 includes a syringe. In the initial state, the spring connects the housing 11 and the plunger, the spring is in a compressed state, and the claw clamps the plunger. When the automatic syringe is used, the button 3 is pressed, and the button 3 moves along the length direction of the syringe body. The pressing body 32 presses the claw to separate the claw from the plunger. Thereafter, the spring drives the plunger to move along the length direction of the syringe body, and the plunger drives the piston in the syringe to move in the same direction, thereby allowing the syringe to complete the injection work. The structure of the above-mentioned button 3 is simple in structure. The connecting body 31 cooperates with the limiter 2 to enable the automatic injection pen to have an anti-mistouch function, and the pressing body 32 cooperates with the firing mechanism 12 to realize the injection work of the automatic injection pen.
[0044] In addition, the shell 11 has an opening relative to the opening 110. When the automatic injection pen is in use, the needle of the syringe extends out from the opening. The injection pen body also includes a pen cover, which is detachably connected to the shell 11 and covers the opening, and the pen cover encloses the syringe needle therein.
[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.
Claims
1. An automatic injection pen that prevents accidental touch, characterized in that: The invention comprises an injection pen body (1), a stopper (2) and a button (3), wherein the injection pen body (1) has a mounting end (10), the stopper (2) is arranged on the outer wall of the mounting end (10), and the stopper (2) can move along the length direction of the injection pen body (1) under the action of an external force, the button (3) has a mounting groove (301), the end of the mounting end (10) is inserted into the mounting groove (301), the button (3) is connected to the injection pen body (1) and can move along the length direction of the injection pen body (1), and the stopper (2) is in contact with the button (3).
2. The anti-accidental-touch automatic injection pen according to claim 1, characterized in that: The mounting end (10) is cylindrical, the outer peripheral wall of the mounting end (10) is provided with a thread (10A), the limiting member (2) is an annular structure, the inner wall of the limiting member (2) has a thread (21), and the thread (21) is meshed with the thread (10A).
3. The anti-accidental-touch automatic injection pen according to claim 2, characterized in that: The screw thread (21) comprises a plurality of thread bodies (211), the thread bodies (211) are meshed with the thread (10A), and the plurality of thread bodies (211) are arranged at intervals along the spiral direction of the thread (10A).
4. The anti-accidental-touch automatic injection pen according to claim 3, characterized in that: The injection pen body (1) comprises a first limit block (100) and a second limit block (200), wherein the first limit block (100) and the second limit block (200) are located in the thread (10A), and the first limit block (100) and the second limit block (200) define a positioning groove (10B); When the limiting member (2) is in contact with the button (3), part of the tooth body (211) is located in the positioning groove (10B), and the first limiting block (100) and the second limiting block (200) are both in contact with the tooth body (211).
5. The anti-mistouch automatic injection pen according to claim 3, characterized in that: The injection pen body (1) further comprises a third limit block (300), which is arranged in the thread (10A) and located at an end of the thread (10A) away from the button (3), and a gap is formed between the third limit block (300) and the end of the thread (10A).
6. The anti-accidental-touch automatic injection pen according to claim 2, characterized in that: The mounting end (10) comprises a first mounting body (101) and a second mounting body (102), the first mounting body (101) and the second mounting body (102) are both cylindrical, and the outer diameter of the first mounting body (101) is smaller than the outer diameter of the second mounting body (102), the first mounting body (101) is inserted into the mounting groove (301), and the second mounting body (102) is connected to the limiting member (2); The limiting member (2) has a limiting protrusion (201), the limiting protrusion (201) is annular, the limiting protrusion (201) is arranged on the inner wall of the limiting member (2) and is located at one end of the limiting member (2) close to the button (3), the limiting protrusion (201) is coaxially arranged with the limiting member (2), and the inner diameter of the limiting protrusion (201) is greater than the outer diameter of the first mounting body (101); When the limiting member (2) is in contact with the button (3), there is a distance between the limiting protrusion (201) and the second mounting body (102) in the length direction of the injection pen body (1).
7. The anti-accidental-touch automatic injection pen according to claim 6, characterized in that: The outer wall of the first installation body (101) is provided with a connection groove (1011), and the connection groove (1011) is annular and is coaxially arranged with the first installation body (101); The mounting groove (301) is circular, and the inner wall of the mounting groove (301) has a connecting protrusion (3011), and the connecting protrusion (3011) is annular and is coaxially arranged with the mounting groove (301); The connecting protrusion (3011) is inserted into the connecting groove (1011), and in the length direction of the injection pen body (1), the length of the connecting groove (1011) is greater than the length of the connecting protrusion (3011).
8. The anti-accidental-touch automatic injection pen according to claim 1, characterized in that: The outer wall of the limiting member (2) is provided with an anti-roll structure (4).
9. The anti-accidental-touch automatic injection pen according to claim 8, characterized in that: The anti-roll structure (4) is rod-shaped and extends along the length direction of the injection pen body (1).
10. The anti-accidental-touch automatic injection pen according to claim 1, characterized in that: The injection pen body (1) comprises a shell (11), a firing mechanism (12) and an injection mechanism (13); the shell (11) has the mounting end (10); an end of the mounting end (10) is provided with an opening (110) connected to the shell (11); the firing mechanism (12) and the injection mechanism (13) are both arranged in the shell (11); the injection mechanism (13) is arranged on a side of the firing mechanism (12) away from the mounting end (10); and the firing mechanism (12) is used to drive the injection mechanism (13) to work; The button (3) comprises a connecting body (31) and a pressing body (32); the connecting body (31) is provided with the mounting groove (301); the pressing body (32) is arranged on the bottom surface of the mounting groove (301); the pressing body (32) passes through the opening (110); the pressing body (32) is used to trigger the firing mechanism (12) to operate; and the limiting member (2) is in contact with the connecting body (31).