Locking structure and its tamper-proof packaging of injection needle

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, especially relates to a locking structure and injection needle of its anti -damage packing, the product includes: the handle, one end is set up to push the groove along the axial direction inwards, push rod, its sliding setting is in push groove, wherein, the side wall of handle has two stroke stop positions along the axial direction, the head of push rod has locking block, and locking block corresponds with stroke stop position, and, when locking block slides to corresponding stroke stop position along the axial direction, locking block is connected with handle inner wall, to locate push rod. Through setting stroke stop position in the side wall of handle, and cooperate with the locking block of push rod head to realize the positioning of push rod position, set up the push rod in the stroke stop position far from the side close to the needle head before packing, locking block fibre push rod at the time, to avoid the needle head puncture the packing.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and in particular relates to an injection needle with a locking structure and its tamper-proof packaging. Background Technology

[0002] When it is necessary to inject medication into a patient, a syringe is required. In endoscopic surgery, unlike general surgery, a needle needs to be inserted into the patient's body to inject at the corresponding location. However, conventional syringes cannot meet the needs. Therefore, an injection needle product has been designed. A thin tube is installed at the head of the handle, and a needle is installed at the head of the thin tube. The extension and retraction of the needle is controlled by a push rod on the handle.

[0003] As this product is a medical device, its packaging requires high precision, especially to prevent damage. However, in some existing technologies, the injection needle packaging lacks specific limiting devices, causing the plunger and needle to become uncontrollable. This could result in the needle protruding from the tubing and puncturing the packaging. If this occurs, the product must be sterilized and repackaged. Failure to do so could pose a hygiene risk.

[0004] Therefore, there is an urgent need to design an injection needle with a locking structure and tamper-proof packaging to solve the technical problem that the needle position cannot be controlled after the injection needle is packaged, which may lead to puncture of the packaging.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] This disclosure provides at least one locking structure and an injection needle for tamper-proof packaging.

[0007] In a first aspect, the present disclosure provides a locking structure, including: a handle, one end of which has a push groove extending inward along the axial direction; The push rod is slidably disposed within the push groove; The sidewall of the handle has two stroke stop positions along the axial direction; The head of the push rod has a locking block, which corresponds to the stroke stop position; Furthermore, when the locking block slides axially to the corresponding travel locking position, the locking block engages with the inner wall of the handle to position the push rod.

[0008] In one optional embodiment, the sidewall of the handle is provided with an upper limit hole and a lower limit hole to form two stroke stop positions respectively.

[0009] In one alternative embodiment, the upper limit hole and the lower limit hole penetrate the sidewall of the handle.

[0010] In one alternative embodiment, the locking block includes a flexible sleeve and a limiting protrusion, the flexible sleeve being adapted to extend and retract radially; The limiting protrusion corresponds to the upper limiting hole and the lower limiting hole.

[0011] In one optional embodiment, the locking block has a support column inside, and the support column has a through hole along the axial direction.

[0012] Secondly, embodiments of this disclosure also provide an injection needle with tamper-proof packaging, including the locking structure described above, the injection needle further including: A guide tube, which is installed at the head of the handle; The guide tube contains a flexible tube, and a needle is slidably mounted on the head of the flexible tube.

[0013] In one alternative embodiment, an infusion tube is installed on the inside of the push rod, and the infusion tube is connected to the needle.

[0014] In one optional embodiment, the push rod has a liquid passage hole along the axial direction, and the liquid passage hole is connected to the infusion pipe.

[0015] In one alternative embodiment, the outer wall of the handle has a plurality of anti-slip rings.

[0016] In one alternative embodiment, the tail of the push rod has an operating block; The outer wall of the control block has anti-slip texture.

[0017] The beneficial effect of this utility model is that it achieves the positioning of the push rod by setting a stroke stop position on the side wall of the handle and cooperating with the locking block of the push rod head. Before packaging, the push rod is set at the stroke stop position away from the side close to the needle. At this time, the locking block fiber push rod is used to prevent the needle from puncturing the packaging.

[0018] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained in the structures particularly pointed out in the description, claims, and drawings.

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A perspective view of an injection needle with tamper-proof packaging provided for an embodiment of this disclosure; Figure 2 This is a schematic diagram of a locking structure provided in an embodiment of the present disclosure.

[0022] In the picture: 1. Handle; 11. Push groove; 12. Upper limit hole; 13. Lower limit hole; 14. Anti-slip ring; 2. Push rod; 21. Infusion tube; 22. Fluid inlet; 23. Control block; 24. Anti-slip texture; 3. Locking block; 31. Flexible sleeve; 32. Limiting protrusion; 33. Support column; 34. Through hole; 4. Guide tube; 41. Flexible tubing; 42. Needle. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Research has found that because injection needles are medical devices, their packaging requires high precision, especially to prevent damage. However, in some existing technologies, the packaging of injection needles lacks specific limiting devices, causing the plunger and needle to become uncontrollable. This could result in the needle extending from the tubing and puncturing the packaging. If this occurs, the product must be sterilized and repackaged. Failure to do so could pose a hygiene risk.

[0025] Therefore, there is an urgent need to design an injection needle with a locking structure and tamper-proof packaging to solve the technical problem that the needle position cannot be controlled after the injection needle is packaged, which may lead to puncture of the packaging.

[0026] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure below should be considered as the inventor's contribution to this disclosure.

[0027] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the embodiments and features described below can be combined with each other. Furthermore, in the accompanying drawings, the thickness of components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] Based on the above research, and referring to Figure 1 This disclosure provides a locking structure, including a handle 1 and a push rod 2. The handle 1 is cylindrical, with a push groove 11 formed at one end along the axial direction, creating an opening. The push rod 2 is inserted into the handle 1 through the opening and can slide axially along the push groove 11. Simultaneously, the side wall of the handle 1 has two stroke stop positions along the axial direction, and the head of the push rod 2 has a locking block 3 corresponding to the stroke stop positions. Specifically, when the push rod 2 slides along the push groove 11 to one of the stroke stop positions, the locking block 3 automatically engages with the inner wall of the handle 1 at the stroke stop position to position the push rod 2. Under normal conditions, the push rod 2 cannot move at this point unless a large external force, such as manual pushing, is applied to move it past the stroke stop position. Thus, in practice, when the injection needle is placed in the packaging, setting the push rod 2 at the stroke stop position away from the needle tip 42 prevents the injection needle from being subjected to external force, thus preventing the needle tip 42 from sliding and puncturing the packaging.

[0030] Reference Figure 1 In at least one embodiment, the sidewall of the handle 1 is provided with an upper limit hole 12 and a lower limit hole 13 to form two stroke stop positions respectively. Optionally, this can be used to... Figure 1 Taking the direction as an example, the left side is designated as the upper limit hole 12, i.e., the side away from the needle 42, and the right side is designated as the lower limit hole 13, i.e., the side closer to the needle 42. Therefore, when the push rod 2 is pushed until the locking block 3 engages with the upper limit hole 12, the needle 42 will retract into the interior, thus preventing it from puncturing the packaging. On the other hand, when the push rod 2 is pushed until the locking block 3 engages with the lower limit hole 13, the needle 42 will extend. This state is used in surgical procedures where the needle 42 extends to inject medication.

[0031] Reference Figure 2In at least one embodiment, the upper limit hole 12 and the lower limit hole 13 penetrate the side wall of the handle 1. This allows medical personnel to press the locking block 3 from the outside to disengage the locking block 3 from the upper limit hole 12 or the lower limit hole 13.

[0032] Reference Figure 2 In at least one embodiment, the locking block 3 includes a flexible sleeve 31 and a limiting protrusion 32, the flexible sleeve 31 being adapted to extend and retract radially. The limiting protrusion 32 corresponds to an upper limiting hole 12 and a lower limiting hole 13. The flexible sleeve 31 has a hollow structure, thereby providing sufficient space for the limiting protrusion 32 to retract inward.

[0033] In addition, refer to Figure 2 This disclosure also provides a tamper-proof packaging injection needle, including the locking structure described above. The injection needle further includes a guide tube 4, which is installed at the head of the handle 1. A flexible tube 41 is installed inside the guide tube 4, and a needle 42 is slidably mounted at the head of the flexible tube 41. An infusion tube 21 is installed inside the push rod 2, passing through the locking block 3 and connected to the needle 42. To ensure the stability of the infusion tube 21, the locking block 3 has a support column 33 inside, and the support column 33 has a through hole 34 along the axial direction. The infusion tube 21 is installed in the through hole 34, and the support column 33 maintains the axial position of the infusion tube 21, preventing it from easily swinging.

[0034] Reference Figure 2 In at least one embodiment, the push rod 2 has an axially oriented liquid passage hole 22, which communicates with the infusion tube 21. The liquid passage hole 22 is used to connect an external medicine container and to introduce the medicine into the infusion tube 21.

[0035] Reference Figure 1 In at least one embodiment, to facilitate the gripping of the handle 1 by medical personnel and to prevent slippage, the outer wall of the handle 1 has several anti-slip rings 14. Simultaneously, to facilitate the pushing of the push rod 2 by medical personnel, the tail of the push rod 2 has an operating block 23. The outer wall of the operating block 23 has anti-slip textures 24.

[0036] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. The apparatus embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Based on the above-described ideal embodiments of this utility model, and through the above description, those skilled in the art can make various changes and modifications without departing from the technical spirit of the disclosed embodiments. The technical scope of the embodiments of this disclosure is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A locking structure, characterized in that, include: The handle (1) has a push groove (11) at one end that extends inward along the axial direction. The push rod (2) is slidably disposed in the push groove (11); The sidewall of the handle (1) has two stroke stop positions along the axial direction; The head of the push rod (2) has a locking block (3), which corresponds to the stroke stop position; Furthermore, when the locking block (3) slides axially to the corresponding stroke locking position, the locking block (3) engages with the inner wall of the handle (1) to position the push rod (2).

2. The locking structure as described in claim 1, characterized in that, The sidewall of the handle (1) is provided with an upper limit hole (12) and a lower limit hole (13) to form two stroke cut-off positions respectively.

3. The locking structure as described in claim 2, characterized in that, The upper limit hole (12) and the lower limit hole (13) penetrate the side wall of the handle (1).

4. The locking structure as described in claim 2, characterized in that, The locking block (3) includes a flexible sleeve (31) and a limiting protrusion (32), the flexible sleeve (31) being adapted to extend and retract radially; The limiting protrusion (32) corresponds to the upper limiting hole (12) and the lower limiting hole (13).

5. The locking structure as described in claim 1, characterized in that, The locking block (3) has a support column (33) inside, and the support column (33) has a through hole (34) along the axial direction.

6. A tamper-proof packaging injection needle, characterized in that, Including the locking structure as described in any one of claims 1-5, the injection needle further includes: A guide tube (4) is installed at the head of the handle (1); The guide tube (4) has a movable hose (41) installed inside, and a needle (42) is slidably installed at the head of the movable hose (41).

7. The tamper-proof packaging injection needle as described in claim 6, characterized in that, An infusion tube (21) is installed on the inner side of the push rod (2), and the infusion tube (21) is connected to the needle (42).

8. The tamper-proof packaging injection needle as described in claim 7, characterized in that, The push rod (2) has a liquid passage hole (22) along the axial direction, and the liquid passage hole (22) is connected to the infusion pipe (21).

9. The tamper-proof packaging injection needle as described in claim 6, characterized in that, The outer wall of the handle (1) has several anti-slip rings (14).

10. The tamper-proof packaging injection needle as described in claim 6, characterized in that, The tail of the push rod (2) has an operating block (23). The outer wall of the control block (23) has anti-slip texture (24).

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