Syringe and locking structure for syringe
By designing a locking structure in the syringe, using the combination of arc blocks, connecting convex strips and stop convex strips, the problem of secondary utilization of the syringe is solved, and the safety of the syringe and user safety are guaranteed.
Patent Information
- Application Number
- CN202510285350.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2025-04-18
AI Technical Summary
Existing syringes may be reused after use, resulting in uncertain harm such as human infection.
A syringe is designed, including a locking structure. By setting up arc blocks, connecting convex strips and stop convex strips, it ensures that the hidden needle sleeve cannot move upward again after injection, avoiding the secondary use of the syringe.
It effectively avoids the secondary utilization of the syringe, solves the safety hazards caused by the secondary utilization of the syringe, and ensures the safety of users.
Smart Images
Figure CN119838093A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of medical machinery, and specifically relates to a syringe, and in particular to a syringe and a locking structure for the syringe. Background Art
[0002] In order to facilitate users to achieve independent and convenient self-administration treatment, self-administration systems or devices have become relatively popular. Pen injection drug treatment can be divided into diabetes treatment, growth hormone treatment, osteoporosis treatment, fertility and other treatments.
[0003] In the related art, the injection pen includes: a pen body, a scale cylinder, a pen cap, a medicine chamber and an injection head. The injection head is placed in a relatively closed space through the pen cap and the body. In order to avoid accidental injury, the pen cap needs to be covered on the pen body after use. This leads to the possibility of secondary use of the complete injection pen, which in turn causes uncertain harm to the human body such as infection.
[0004] Therefore, how to prevent syringes from being reused is a technical problem that urgently needs to be solved in this field.
[0005] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention
[0006] The disclosed embodiments at least provide a syringe and a locking structure for the syringe to solve the technical problem of the syringe being reused.
[0007] In the first aspect, an embodiment of the present disclosure provides a syringe, comprising: a pen cap; a lower pen body tube, which is used to be sleeved on the pen cap; a hidden needle cover, which is arranged in the pen cap and the lower pen body tube; wherein an inner cylinder is arranged under the lower pen body tube, at least one slot is arranged between the inner cylinder and the lower pen body tube, and a locking structure is arranged in the slot; an insertion strip is arranged on the hidden needle cover, and a protrusion is arranged on the inner wall of the insertion strip; wherein the insertion strip of the hidden needle cover is configured to move into the slot during injection, and after injection, the protrusion drags the locking structure to move downward, and the locking structure is abutted against the inner cylinder.
[0008] In an optional embodiment, the locking structure includes an arc block, which has an outer surface and an inner surface; the inner surface is arranged in contact with the inner tube, and the outer surface is provided with a linkage convex strip; the inner surface is provided with a stop convex strip; wherein, after injection, the convex block pulls the arc block downward through the linkage convex strip, and the stop convex strip abuts against the bottom surface of the inner tube to prevent the hidden needle sleeve from continuing to move upward.
[0009] In an optional embodiment, limit strips are provided on both sides of the arc block; when the inserting strip moves along the arc block, both sides of the inserting strip fit with the limit strips.
[0010] In an optional embodiment, the linkage ridges are located at the lower end of the inner surface, and there are at least two linkage ridges that are spaced apart along the lower end of the inner surface.
[0011] In an optional embodiment, the syringe includes an upper pen body tube, in which a sleeve is arranged; the lower half of the sleeve extends into the lower pen body tube and abuts against the top surface of the hidden needle sleeve.
[0012] In an optional embodiment, the bottom surface of the sleeve and the top surface of the hidden needle sleeve are both flat.
[0013] In an optional embodiment, the width of the bottom surface of the sleeve is h 1 ; The width of the top surface of the hidden needle sleeve is h 2 ; where h 1> h 2 .
[0014] In the second aspect, the present embodiment also provides a locking structure for a syringe, comprising: an arc-shaped block, the arc-shaped block having an outer surface and an inner surface; a linkage convex strip is provided near the upper position of the outer surface; a stop convex strip is provided at the bottom position of the inner surface; during injection, the insert strip on the hidden needle sleeve moves upward along the outer surface, and after injection, the convex block pulls the arc-shaped block downward through the linkage convex strip until the stop convex strip slides out of the inner tube, and when the hidden needle sleeve moves upward again, the stop convex strip abuts against the bottom surface of the inner tube.
[0015] In an optional embodiment, limit bars are provided on both sides of the arc block; when the inserting bar moves along the arc block, both sides of the inserting bar abut against the limit bars.
[0016] In an optional implementation, the top surface of the linkage convex strip and the bottom surface of the stop convex strip are both planes that match the convex block.
[0017] In an optional implementation, the top surface of the linkage convex strip and the bottom surface of the stop convex strip are both planes that match the convex block.
[0018] The beneficial effect of the present invention is that the present invention provides a syringe and a locking structure for the syringe, which, by setting the locking structure, allows the hidden needle cover to abut against the arc block when it moves upward for the first injection, and when the hidden needle cover moves downward after the injection is completed, the linked convex strip is also driven downward. When the hidden needle cover moves upward again, the hidden needle cover is prevented from moving upward again, thereby avoiding the injection of the syringe again, and solving the safety hazard of the syringe being reused for the second time.
[0019] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.
[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A three-dimensional diagram of a syringe provided in an embodiment of the present disclosure; Figure 2 A cross-sectional view of a lower pen barrel and an upper pen barrel provided in an embodiment of the present disclosure; Figure 3 A three-dimensional diagram of a state in which the lower pen barrel and the locking structure are separated provided by an embodiment of the present disclosure; Figure 4 A cross-sectional view of a locking structure and a hidden needle sleeve provided in an embodiment of the present disclosure; Figure 5 A three-dimensional diagram of a locking structure provided in an embodiment of the present disclosure; Figure 6 A three-dimensional diagram of an injection pen provided by an embodiment of the present disclosure; Figure 7 A schematic diagram of a locking structure and a bump structure before injection of a syringe provided in an embodiment of the present disclosure; Figure 8 A schematic diagram of the locking structure and the bump structure of the syringe during injection provided by the embodiment of the present disclosure; Fig. 9 A schematic diagram of a locking structure and a bump structure of a syringe after injection provided by an embodiment of the present disclosure; Fig.10 This is a schematic diagram of the locking structure and the protrusion structure when the hidden needle cover of the syringe provided in an embodiment of the present disclosure moves upward again.
[0023] In the figure: 1. Lower pen barrel; 11. Inner barrel; 2. Upper pen barrel; 3. Pen cap; 4. Hidden needle sleeve; 41. Insert; 42. Bump; 5. Sleeve; 6. Locking structure; 61. Arc block; 62. Outer surface; 63. Inner surface; 64. Linking convex strip; 65. Stop convex strip; 66. Limit strip. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0025] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.
[0026] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.
[0027] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limited. As used herein, the singular articles "one", "an" and "the" may also be intended to include plural forms, unless it is clearly indicated above that this is not the case. The terms "comprise", "include" and "have" are inclusive, and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the specific order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.
[0028] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.
[0029] After research, it was found that the shortcomings of the existing technology are: in the relevant technology, the injection pen includes: a pen body, a scale cylinder, a pen cap, a medicine chamber and an injection head. The injection head is placed in a relatively closed space through the pen cap and the body. In order to avoid accidental injury, the pen cap needs to be covered on the pen body after use. This leads to the possibility of secondary use of the complete injection pen, which in turn causes uncertain harm to the human body such as infection.
[0030] Therefore, how to prevent syringes from being reused is a technical problem that urgently needs to be solved in this field.
[0031] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.
[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0033] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0034] like Figures 1 to 10 As shown, some embodiments provide a syringe, comprising: an upper pen barrel 2, a lower pen barrel 1 and a pen cap 3, specifically, the lower pen barrel 1 is sleeved on the pen cap 3; a hidden needle sleeve 4 is arranged inside the pen cap 3 and the lower pen barrel 1; wherein, an inner cylinder 11 is arranged below the lower pen barrel 1, the inner cylinder 11 is arranged at the lower part of the bottom surface of the lower pen barrel 1, the outer wall of the inner cylinder 11 and the inner wall of the lower pen barrel 1 are fixed by connecting ribs, and slots 12 are formed between the connecting ribs and the outer wall of the inner cylinder 11 and the inner wall of the lower pen barrel 1, that is, at least one slot 12 is arranged between the inner cylinder 11 and the lower pen barrel 1, and a locking structure 6 is arranged in the slot 12.
[0035] See also Figure 2 Combined with Figures 5 to 10 The locking structure 6 includes an arc block 61, which has an outer surface 62 and an inner surface 63; the inner surface 63 is arranged in close contact with the inner tube 11; the outer surface 62 is used to abut against the inner wall of the insert 41, and the inner surface 63 is used to abut against the outer wall of the inner tube 11. A linkage convex strip 64 is provided on the outer surface 62, and the main function of the linkage convex strip 64 is to move downward with the convex block 42; a stop convex strip 65 is provided on the inner surface 63; the main function of the stop convex strip 65 is to limit the convex block 42 from moving upward again; the linkage convex strip 65 is located at the lower end of the inner surface 63, and there are at least two linkage convex strips 65, which are spaced apart along the lower end of the inner surface 63.
[0036] See also Figure 2 and Figure 4 , an inserting strip 41 is provided on the hidden needle sleeve 4, and when the hidden needle sleeve 4 moves upward, the inserting strip 41 is used to move into the slot 12, and a protrusion 42 is provided on the inner wall of the inserting strip 41; the protrusion 42 is a triangular arc strip with a flat bottom surface; wherein during injection, the inserting strip 41 of the hidden needle sleeve 4 is configured to move into the slot 12, and after injection, the protrusion 42 drags the locking structure 6 to move downward, and when the hidden needle sleeve 4 moves upward again, the locking structure 6 is stuck on the bottom surface of the lower pen body 1 to prevent the hidden needle sleeve 4 from moving to the top surface of the slot 12.
[0037] See also Figures 5 to 10 Specifically, before injection, the protrusion 42 is located below the slot 12. During injection, the protrusion 42 moves upward. After injection, the protrusion 42 pulls the arc block 61 downward through the linkage protrusion 64. When the hidden needle sleeve 4 moves upward again, the stop protrusion 65 abuts against the bottom surface of the lower pen body 1 to prevent the hidden needle sleeve 4 from continuing to move upward. That is, when the hidden needle sleeve 4 moves upward again, the inner surface 63 moves upward along the inner tube 11 of the lower pen body 1 until the stop protrusion 65 abuts against the bottom surface of the lower pen body 1 to prevent the hidden needle sleeve 4 from continuing to move upward.
[0038] See also Figure 5 When the inserting strip 41 moves into the slot 12 and begins to abut against the outer surface 62 of the arc block 61 , both sides of the slot 41 need to be limited, so limiting strips 66 are provided on both sides of the arc block 61 ; when the inserting strip 41 moves along the arc block 61 , both sides of the inserting strip 41 abut against the limiting strips 66 .
[0039] Please participate Figure 1 Combined with Figure 2 and Figure 6 , including an upper pen body 2, wherein a sleeve 5 is arranged inside the upper pen body 2; the lower half of the sleeve 5 extends; the sleeve 5 is arranged inside the upper pen body 2; during injection, the hidden needle sleeve 4 will move upward, and the top surface of the hidden needle sleeve 4 moving upward will abut against the bottom surface of the sleeve 5, and the lower half of the sleeve 5 extends into the lower pen body 1 and abuts against the top surface of the hidden needle sleeve 4. In order to improve the stability of the hidden needle sleeve 4 and the sleeve 5 abutting against each other during injection, the bottom surface of the sleeve 5 and the top surface of the hidden needle sleeve 4 are both planes. The width of the bottom surface of the sleeve 5 is h 1 ; The width of the top surface of the hidden needle sleeve 4 is h 2 ; where h 1 >h 2 .
[0040] See also Figure 2 Combined with Figures 5 to 10Some embodiments further provide a locking structure for a syringe, including: an arc block 61, the arc block 61 having an outer surface 62 and an inner surface 63; the outer surface 62 is used to abut against the inner wall of the insert 41, and the inner surface 63 is used to abut against the outer wall of the inner tube 11, and a linkage convex strip 64 is provided near the upper position of the outer surface 62; a stop convex strip 65 is provided at the bottom position of the inner surface 63; the main function of the linkage convex strip 64 is to move downward with the convex block 42; the main function of the stop convex strip 65 is to limit the convex block 42 from moving upward again.
[0041] See also Figures 5 to 10 Specifically, before injection, the protrusion 42 exists below the slot 12. During injection, the insert strip 41 on the hidden needle sleeve 4 moves upward along the outer surface 62. After injection, the protrusion 42 pulls the arc block 61 downward through the linkage protrusion 64. When the hidden needle sleeve 4 moves upward again, the inner surface 63 moves upward along the inner tube 11 of the lower pen body tube 1 until the stop protrusion 65 abuts against the bottom surface of the lower pen body tube 1 to prevent the hidden needle sleeve 4 from continuing to move upward. That is, during injection, the insert strip 41 on the hidden needle sleeve 4 moves upward along the outer surface 62. After injection, the protrusion 42 pulls the arc block 61 downward through the linkage protrusion 64 until the stop protrusion 65 slides out of the inner tube 11. When the hidden needle sleeve 4 moves upward again, the stop protrusion 65 abuts against the bottom surface of the inner tube 11.
[0042] See also Figure 5 When the inserting strip 41 moves into the slot 12, the inserting strip 41 begins to abut against the outer surface 62 of the arc block 61, and the two sides of the slot 41 need to be limited, so the two sides of the arc block 61 are provided with limit strips 66; when the inserting strip 41 moves along the arc block 61, the two sides of the inserting strip 41 abut against the limit strips 66. The top surface of the linkage convex strip 64 and the bottom surface of the stop convex strip 65 are both planes that match the convex block 42.
[0043] In summary, by providing the locking structure 6, the hidden needle cover 4 is allowed to abut against the arc block 61 when it moves upward for the first injection. After the injection is completed, the hidden needle cover 4 moves downward and the linkage convex strip 64 is also driven downward. The bottom surface of the stop convex strip 65 abuts against the bottom surface of the lower pen body 1, preventing the hidden needle cover 4 from moving upward again, thereby avoiding the injection of the syringe again, and solving the safety hazard of the syringe being reused for the second time.
[0044] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0045] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.
[0046] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A syringe, characterized in that: include: Pen cap (3); A lower pen body (1) for being mounted on a pen cap (3); A hidden needle sleeve (4) is arranged inside the pen cap (3) and the lower pen body (1); Wherein, an inner tube (11) is arranged below the lower pen body tube (1), at least one slot (12) is arranged between the inner tube (11) and the lower pen body tube (1), and a locking structure (6) is arranged in the slot (12); The hidden needle sleeve (4) is provided with an insert (41), and the inner wall of the insert (41) is provided with a protrusion (42); wherein During injection, the insert strip (41) of the hidden needle sleeve (4) is configured to move into the slot (12), and after injection, the projection (42) drags the locking structure (6) to move downward, and the locking structure (6) abuts against the inner tube (11).
2. The syringe according to claim 1, characterized in that The locking structure (6) comprises an arc-shaped block (61), wherein the arc-shaped block (61) has an outer surface (62) and an inner surface (63); the inner surface (63) is arranged to fit the inner cylinder (11); The outer surface (62) is provided with a linkage convex strip (64); The inner surface (63) is provided with a stop convex strip (65); After the injection, the protrusion (42) pulls the arc block (61) downwards through the linkage protrusion (64), and the stop protrusion (65) abuts against the bottom surface of the inner tube (11) to prevent the hidden needle sleeve (4) from continuing to move upwards.
3. The syringe according to claim 2, characterized in that Limiting strips (66) are provided on both sides of the arc-shaped block (61); wherein When the inserting strip (41) moves along the arc block (61), two sides of the inserting strip (41) fit with the limiting strips (66).
4. The syringe according to claim 2, characterized in that The linkage convex strips (65) are located at the lower end of the inner surface (63), and there are at least two linkage convex strips (65) which are spaced apart along the lower end of the inner surface (63).
5. The syringe according to claim 4, characterized in that It comprises an upper pen body tube (2), wherein a sleeve (5) is arranged inside the upper pen body tube (2); The lower half of the sleeve (5) extends into the lower pen body (1) and abuts against the top surface of the hidden needle sleeve (4).
6. The syringe according to claim 5, characterized in that The bottom surface of the sleeve (5) and the top surface of the hidden needle sleeve (4) are both flat surfaces.
7. The syringe according to claim 6, characterized in that The width of the bottom surface of the sleeve (5) is h1; The width of the top surface of the hidden needle sleeve (4) is h2; wherein h 1> h2。 8. A locking structure for a syringe, characterized in that: include: An arc-shaped block (61), wherein the arc-shaped block (61) has an outer surface (62) and an inner surface (63); The outer surface (62) is provided with a linkage convex strip (64) near the upper portion; A stop convex strip (65) is provided at the bottom of the inner surface (63); During injection, the insert strip (41) on the hidden needle sleeve (4) moves upward along the outer surface (62). After injection, the convex block (42) pulls the arc block (61) downward through the linked convex strip (64) until the stop convex strip (65) slides out of the inner tube (11). When the hidden needle sleeve (4) moves upward again, the stop convex strip (65) abuts against the bottom surface of the inner tube (11).
9. The locking structure according to claim 8, characterized in that: Limiting strips (66) are provided on both sides of the arc-shaped block (61); wherein When the inserting strip (41) moves along the arc-shaped block (61), two sides of the inserting strip (41) abut against the limiting strips (66).
10. The locking structure according to claim 8, characterized in that: The top surface of the linkage convex strip (64) and the bottom surface of the stop convex strip (65) are both planes that match the convex block (42).