False touch prevention blood taking needle

Abstract

The utility model belongs to the technical field of medical equipment, and provides a mistaken touch prevention blood taking needle which comprises an outer shell, an inner shell, an elastic piece and an end cover. The shell is provided with a cavity penetrating through the two ends, and the two ends of the cavity are the working end and the containing end respectively. A needle tube is arranged at one end of the inner shell, the inner shell is installed in the cavity, and the needle tube faces the working end; the elastic piece is installed outside the inner shell, and the two ends of the elastic piece are connected with the outer shell and the inner shell in an abutting-against mode respectively. The outer shell is provided with a clamping hole, the cavity is communicated with the outside through the clamping hole, the inner shell is provided with a clamping lug, and the clamping lug is buckled with the clamping hole; and the end cover is connected with the storage end. In a working state, the inner shell compresses the elastic piece to move towards the working end until the needle tube extends out of the working end; and in the storage state, the connection between the clamping lug and the clamping hole is released, so that the elastic piece pushes the inner shell to move towards the storage end until the needle tube is completely stored in the operation end.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a blood collection needle that prevents accidental contact. Background Art

[0002] In medical practice, blood collection needles are widely used in blood collection. However, traditional blood collection needles have certain safety hazards during use. For example, the needle tube is exposed after use, which is likely to cause needle stick injuries. Therefore, designing a safe and convenient blood collection needle is crucial for ensuring the safety of medical workers and patients. Summary of the Utility Model

[0003] In order to overcome the problems existing in the prior art, the purpose of the utility model is to provide a blood collection needle that prevents accidental contact.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows: A blood collection needle that prevents accidental contact, comprising: an outer shell, an inner shell, an elastic member, and an end cap; the outer shell is provided with a cavity penetrating through both ends, and the two ends of the cavity are respectively a working end and a receiving end; one end of the inner shell is provided with a needle tube, the inner shell is installed in the cavity, and the needle tube faces the working end; the elastic member is installed outside the inner shell, and the two ends of the elastic member are respectively tightly connected to the outer shell and the inner shell; the outer shell is provided with a locking hole, the locking hole communicates the cavity with the outside, the inner shell is provided with a locking ear, and the locking ear is snap-connected to the locking hole; the end cap is connected to the receiving end; in the working state, the inner shell compresses the elastic member and moves towards the working end until the needle tube extends outside the working end; in the receiving state, the connection between the locking ear and the locking hole is released, so that the elastic member pushes the inner shell towards the receiving end until the needle tube is completely received into the working end; a holding portion is provided on the periphery of the working end, the holding portion is provided with a first flap and a second flap, and the first flap and the second flap are respectively arranged on both sides of the working end; a holding portion is provided on the periphery of the working end, the holding portion is provided with a first flap and a second flap, and the first flap and the second flap are respectively arranged on both sides of the working end.

[0005] Its main working principle lies in that the working principle of this anti-misoperation blood collection needle is mainly based on the interaction and cooperation among the inner shell, the elastic member, and the outer shell. First, in the working state, when it is necessary to use the syringe for blood collection, the inner shell needs to be moved towards the working end first. During this movement, the inner shell compresses the elastic member, causing the elastic member to accumulate potential energy. As the inner shell moves, the syringe gradually extends from the working end until it is completely exposed, facilitating the blood collection operation. After the blood collection is completed, the syringe needs to be retracted to prevent accidental stabbing. At this time, the engagement connection between the lugs on the inner shell and the card holes on the outer shell is released. Once the connection between the lugs and the card holes is released, the previously compressed elastic member releases the potential energy it has accumulated, pushing the inner shell towards the storage end. During this process, the syringe will gradually be pulled back into the working end along with the movement of the inner shell until it is completely retracted, thus ensuring that the syringe is not exposed, improving the safety of use. During the whole process, the connection between the end cap and the storage end plays a role of fixing and limiting. At the same time, the design of the outer shell also provides protection for the entire blood collection needle, ensuring stability and safety during use and carrying. In summary, through the interaction and cooperation among the inner shell, the elastic member, and the outer shell, this anti-misoperation blood collection needle realizes the automatic telescoping of the syringe, which not only facilitates the blood collection operation but also improves the safety of use.

[0006] Preferably, the first flap and the second flap gradually narrow inward in the direction of the working end, and the narrowing parts of the first flap and the second flap are finger buckling parts.

[0007] Preferably, a first clamping platform is provided in the cavity, a second clamping platform is provided on the outer side of the inner shell, the elastic member is sleeved on the outer side of the inner shell, and both ends of the elastic member are respectively abutted against the first clamping platform and the second clamping platform.

[0008] Preferably, the number of the lugs is at least two, and the number of the card holes corresponds to the number of the lugs.

[0009] Preferably, the lugs gradually extend outward in the direction of the working end, and a convex part for easy buckling is provided on the outer side of the lugs.

[0010] Preferably, the lugs gradually extend outward in the direction of the working end, and a convex part for easy buckling is provided on the outer side of the lugs, and the convex part is buckled with the card hole.

[0011] Preferably, the middle part of the outer shell is arcuately narrowed inward, and the card hole is arranged at the narrowed part in the middle of the outer shell, and the lug protrudes from the card hole.

[0012] Preferably, the cavity gradually expands outward in the direction of the storage end, and during the storage process, the lug continuously expands outward along the inner wall of the cavity.

[0013] Preferably, a retaining strip is provided at the end of the end cap, and the area enclosed by the retaining strip is smaller than the area of the second clamping platform. In the storage state, the retaining strip and the second clamping platform are tightly pressed against each other.

[0014] Preferably, the elastic member is a spring, the spring is sleeved around the outer periphery of the inner shell, and the two ends of the spring are tightly connected to the outer shell and the inner shell respectively.

[0015] Preferably, a conduit is provided at the working end, and the conduit is arranged along the moving direction of the needle tube, and the inner shell moves along the conduit.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] Through the close cooperation and interaction among the inner shell, the elastic member and the outer shell, the present utility model ensures the stability and reliability of the structure of the blood collection needle, enabling the needle tube to move smoothly during the extension and storage processes. During blood collection, the needle tube can extend out of the working end for blood collection operations; after blood collection is completed, by releasing the connection between the clamping ear and the clamping hole, the needle tube can be automatically stored into the working end, avoiding accidental injuries caused by accidental contact due to the exposure of the needle tube, and greatly improving the safety of use. At the same time, doctors can achieve the extension and storage of the needle tube only through simple operations, such as pressing or releasing the connection between the clamping ear and the clamping hole. The operation process is simple and fast, improving the use efficiency, and achieving beneficial effects such as safe use, simple operation, stable structure, convenient carrying and repeated use, meeting the requirements for blood collection needles in medical practice. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the overall anti-miscontact blood collection needle;

[0020] Figure 2 It is a cross-sectional view of the anti-miscontact blood collection needle;

[0021] 1. Outer shell; 10. Cavity; 11. Working end; 12. Storage end; 13. Clamping hole; 14. First clamping platform; 15. Conduit; 2. Inner shell; 20. Clamping ear; 21. Second clamping platform; 22. Protrusion; 3. Elastic member; 4. End cap; 40. Retaining strip; 5. Needle tube; 6. Holding part; Detailed Embodiments

[0022] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the scope of protection of the present utility model.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0024] This specific embodiment provides an anti-misoperation blood collection needle, and the blood collection needle aims to provide a blood collection tool with stable structure, simple operation, and safety. The following will describe the present invention in detail with reference to the accompanying drawings and embodiments.

[0025] First, as Figure 1 - Figure 2 shown, the anti-misoperation blood collection needle in this embodiment mainly includes a housing 1, an inner housing 2, an elastic member 3, and an end cap 4. Among them, the housing 1 is a structure having a cavity 10 penetrating both ends. The two ends of the cavity 10 are respectively an operation end 11 and a storage end 12. The operation end 11 is the part for extending the needle tube 5 to collect blood, and the storage end 12 is for providing a space for the storage of the needle tube 5. At the same time, a needle tube 5 is provided at one end of the inner housing 2, and the needle tube 5 is a sharp end for piercing the skin to collect blood. The inner housing 2 is installed in the cavity 10, and the needle tube 5 faces the operation end 11.

[0026] The elastic member 3 is installed on the outer side of the inner shell 2, and its two ends are respectively tightly connected to the outer shell 1 and the inner shell 2. This design enables the inner shell 2 to move within the cavity 10 under the push of the elastic member 3. In this embodiment, the elastic member 3 is selected as a spring because it is both easy to install and replace and can provide a stable elastic restoring force. The spring is sleeved around the outer periphery of the inner shell 2, ensuring the stability of the inner shell 2 during movement. In the working state, when it is necessary to use the syringe 5 for blood collection, the inner shell 2 needs to be moved towards the working end 11 first. During this movement process, the inner shell 2 will compress the elastic member 3, causing the elastic member 3 to store potential energy. As the inner shell 2 moves, the syringe 5 gradually extends from the working end 11 until it is completely exposed outside for convenient blood collection operation. When the blood collection is completed, the syringe 5 needs to be stored to prevent accidental stabbing. At this time, the latching ear 20 on the inner shell 2 is disengaged from the latching hole 13 on the outer shell 1. Once the connection between the latching ear 20 and the latching hole 13 is released, the previously compressed elastic member 3 will release the potential energy it has stored, pushing the inner shell 2 towards the storage end 12. During this process, the syringe 5 will gradually be pulled back into the working end 11 as the inner shell 2 moves until it is completely stored, thus ensuring that the syringe 5 is not exposed outside and improving the safety of use.

[0027] Meanwhile, a holding portion 6 is provided on the periphery of the working end. The holding portion 6 is provided with a first flap and a second flap. The first flap and the second flap are respectively arranged on both sides of the working end 11. During the working process, by clamping the first flap and the second flap with fingers, the stability of holding is increased.

[0028] In some alternative embodiments, in order to make the finger clamping more stable, the first flap and the second flap are gradually narrowed inward towards the direction of the working end 11, and the narrowing parts of the first flap and the second flap are set as finger clamping portions.

[0029] In some alternative embodiments, latching holes 13 are provided on the outer shell 1, and these latching holes 13 communicate the cavity 10 with the external environment. Latching ears 20 matching the latching holes 13 are provided on the inner shell 2. When the latching ears 20 are latched with the latching holes 13, the inner shell 2 is fixed within the cavity 10 and the elastic member 3 is squeezed. At this time, the syringe 5 is exposed outside the outer shell 1. After the blood collection is completed, only by releasing the latching connection between the latching ears 20 and the latching holes 13, the compressed elastic member 3 will release the potential energy it has stored, pushing the inner shell 2 towards the storage end 12 and driving the syringe 5 to contract inward, thus realizing the storage of the syringe 5.

[0030] In some alternative embodiments, the number of the latching ears 20 is at least two, and the number of the latching holes 13 corresponds to the number of the latching ears 20. Such a design increases the latching points between the latching ears 20 and the latching holes 13 and improves the latching stability. For example Figure 2As described above, in this embodiment, there are two clamping ears 20 and two clamping holes 13, and the two clamping ears 20 and the two clamping holes 13 can keep the two sides of the inner shell 2 balanced, thereby improving the stability of the buckle. At the same time, the clamping ears 20 gradually extend outward in the direction of the working end 11, and the outer side is provided with a protrusion 22 for easy buckle. Such a design makes it easier to buckle the clamping ears 20 and the clamping holes 13. At the same time, because the elastic member 3 presses against the inner shell 2, the protrusion 22 and the clamping hole 13 are more closely matched, further improving the firmness of the buckle.

[0031] In some optional embodiments, in order to ensure the stable movement of the inner shell 2 in the cavity 10, a first clamping platform 14 is provided in the cavity 10, and a second clamping platform 21 is provided outside the inner shell 2. The elastic member 3 is sleeved on the outside of the inner shell 2, and its two ends are respectively pressed against the first clamping platform 14 and the second clamping platform 21. Such a design makes the installation of the elastic member 3 more stable, and also ensures the stable movement of the inner shell 2 in the cavity 10.

[0032] In some optional embodiments, the middle of the outer shell 1 is narrowed inwards, and the latch hole 13 is arranged at this narrowed position. This design allows the latch 20 to extend outwards as far as possible after being matched with the latch hole 13, thereby preventing the latch 20 from falling off from the latch hole 13 due to accidental touch. At the same time, the cavity 10 gradually expands outwards in the direction of the receiving end 12, which provides sufficient moving space for the inner shell 2 at the receiving end 12.

[0033] In some optional embodiments, the end cover 4 is connected to the storage end 12, and it plays a role in protecting the storage end 12. In this embodiment, a stop bar 40 is provided at the end of the end cover 4, and the area surrounded by the stop bar 40 is smaller than the area of the second card platform 21. In this way, when the inner shell 2 is in the storage state, the stop bar 40 can effectively prevent the inner shell 2 from sliding out of the storage end 12.

[0034] In some optional embodiments, the working end 11 is provided with a catheter 15, and the inner shell 2 moves along the catheter 15. The design of the catheter 15 makes the movement of the inner shell 2 more stable, preventing the position of the needle tube 5 from being offset. In addition, in order to facilitate the doctor's operation, a gripping portion 6 is also provided on the periphery of the working end 11, and anti-slip textures are added on the periphery of the gripping portion 6. In this way, the user can hold the outer shell 1 more stably during use, preventing operational errors caused by hand slippage.

[0035] In summary, the anti-misoperation blood collection needle in this embodiment is reasonably designed, has a stable structure, and is easy to operate. Through the engagement and disengagement of the ear 20 and the hole 13, the extension and storage of the syringe 5 are realized, which not only ensures the smooth progress of the blood collection process, but also effectively avoids accidental stabbing of the syringe 5, greatly improving the safety of use. At the same time, the design of each part also fully considers the user experience, making the whole blood collection process more comfortable and smooth.

[0036] It should be noted that this embodiment is only a specific implementation manner, and its structure, shape, size, etc. can be adjusted and improved according to actual needs, but these improvements and changes should be regarded as within the protection scope of the present invention.

[0037] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Therefore, any modifications, equivalent changes and decorations made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An anti-mis-touch blood collection needle, characterized in that, Comprising: A housing, an inner shell, an elastic member, and an end cap; The housing is provided with a cavity penetrating through both ends, and the two ends of the cavity are respectively an operating end and a receiving end; One end of the inner shell is provided with a needle tube, the inner shell is installed in the cavity, and the needle tube faces the operating end; The elastic member is installed outside the inner shell, and the two ends of the elastic member are respectively tightly connected to the housing and the inner shell; The housing is provided with a clamping hole, the clamping hole communicates the cavity with the outside, the inner shell is provided with a clamping ear, and the clamping ear is snap-connected with the clamping hole; The end cap is connected to the receiving end; In the working state, the inner shell compresses the elastic member and moves towards the operating end until the needle tube extends outside the operating end; in the receiving state, the connection between the clamping ear and the clamping hole is released, so that the elastic member pushes the inner shell towards the receiving end until the needle tube is completely received into the operating end; A holding portion is provided on the periphery of the operating end, the holding portion is provided with a first flap and a second flap, and the first flap and the second flap are respectively arranged on both sides of the operating end.

2. The anti-misoperation blood collection needle according to claim 1, wherein The first flap and the second flap are gradually narrowed inward in the direction towards the operating end, and the narrowed portions of the first flap and the second flap are finger buckling portions.

3. The anti-misoperation blood collection needle according to claim 1, wherein A first clamping platform is provided in the cavity, a second clamping platform is provided on the outside of the inner shell, the elastic member is sleeved on the outside of the inner shell, and the two ends of the elastic member are respectively tightly abutted against the first clamping platform and the second clamping platform.

4. The anti-misoperation blood collection needle according to claim 1, wherein The number of the clamping ears is at least two, and the number of the clamping holes corresponds to the number of the clamping ears.

5. The anti-misoperation blood collection needle according to claim 1, wherein The clamping ear gradually extends outward in the direction towards the operating end, and a convex portion for easy buckling is provided on the outside of the clamping ear, and the convex portion is snap-connected with the clamping hole.

6. The anti-misoperation blood collection needle according to claim 5, wherein The middle part of the housing is arc-shaped and narrowed inward, and the clamping hole is arranged at the narrowed part of the middle part of the housing, and the clamping ear protrudes from the clamping hole.

7. The anti-misoperation blood collection needle according to claim 5, wherein The cavity gradually expands outward in the direction towards the receiving end, and during the receiving process, the clamping ear continuously expands outward along the inner wall of the cavity.

8. The anti-misoperation blood collection needle according to claim 3, wherein A stop bar is provided at the end of the end cap, and the area surrounded by the stop bar is smaller than the area of the second clamping platform. In the receiving state, the stop bar is tightly abutted against the second clamping platform.

9. The anti-misoperation blood collection needle according to claim 1, wherein The elastic member is a spring, the spring is sleeved on the periphery of the inner shell, and the two ends of the spring are respectively tightly connected to the housing and the inner shell.

10. The anti-misoperation blood collection needle according to claim 1, wherein The working end is provided with a catheter, and the catheter is arranged along the moving direction of the needle tube, and the inner shell moves along the catheter.

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