Sampling needle protective cap

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a sampling needle protective cap. The protective cap comprises a cover body, a cap and an automatic ejection part, the cover body comprises a shell, an upper end face and a lower end face, the upper end face and the lower end face are connected to the two axial ends of the shell, a through hole in the axial direction of the cover body is formed in the lower end face, and the upper end face is rotationally connected to the circumferential outer end of the shell and can be connected with the cap in a clamped mode; the automatic ejection part has a reset state and a compressed state, and when the upper end face is connected with the cap in a clamped mode, the automatic ejection part is in the compressed state; when the upper end face is in non-clamping connection with the cap, the automatic ejection part is automatically switched from the compressed state to the reset state. The automatic ejection part can automatically restore the cap to the position basically parallel to the radial direction of the cover body after the cover body and the cap are not connected in a clamping mode, the cap does not need to be reset manually by a blood sampling person, the operation convenience and efficiency of the blood sampling person are greatly improved, and blood on the sampling needle is prevented from dripping.

Description

Technical Field

[0001] The present application belongs to the field of medical device technology, and specifically relates to a sampling needle protective cap. Background Art

[0002] Sampling needles and sampling bags are common medical consumables in the medical field. The sampling needle pierces the sampling needle rubber sleeve and the rubber stopper on the top of the vacuum blood collection tube, allowing a small amount of venous blood in the sampling bag to flow into the vacuum blood collection tube through the sampling needle for sampling. After the sampling is completed, when the sampling needle is pulled out of the rubber stopper, the blood at its tip will drip under the action of gravity, which can easily cause contamination and occupational exposure risks, and also increase the workload of subsequent cleaning and disinfection.

[0003] Therefore, there is an urgent need for a stable and reliable sampling needle protective cap that can prevent blood from the sampling needle from dripping into the surrounding environment. Utility Model Content

[0004] The purpose of the present application is to provide a stable and reliable sampling needle protective cap that can prevent blood from a sampling needle from dripping into the surrounding environment.

[0005] The embodiments of the present application can be implemented through the following technical solutions:

[0006] A sampling needle protective cap, comprising a cover body, a cap, and an automatic ejection portion, wherein the cover body comprises a shell, and an upper end surface and a lower end surface connected to the axial ends of the shell, the lower end surface being provided with a through hole along the axial direction of the cover body, and the upper end surface being rotatably connected to the circumferential outer end of the shell and capable of being engaged with the cap;

[0007] The automatic ejection portion has a reset state and a compressed state. When the upper end surface is engaged with the cap, the automatic ejection portion is in the compressed state; when the upper end surface is not engaged with the cap, the automatic ejection portion automatically switches from the compressed state to the reset state.

[0008] Furthermore, the automatic ejection part is an L-shaped structure, protruding from the cap and the cover body, and includes a first connecting arm and a second connecting arm, one end of the first connecting arm is movably connected to the cap, and the other end is movably connected to the second connecting arm, and the other end of the second connecting arm is movably connected to the upper end surface.

[0009] Furthermore, the cap includes a strip hole, the upper end surface includes a strip groove, the strip hole and the strip groove are aligned, the outer end of the strip groove is movably connected to the second connecting arm, and the outer end of the strip hole is movably connected to the first connecting arm.

[0010] Furthermore, the cap includes a snap-fitting portion, the upper end surface is provided with a vacant portion cooperating with the snap-fitting portion, and the snap-fitting portion can extend into the vacant portion and snap-fit ​​connected with the bottom surface of the upper end surface.

[0011] Furthermore, the engaging portion includes a connecting portion and a limiting portion, one end of the connecting portion is connected to the inner wall of the cap, and the other end is bent inward and extended to form the limiting portion, and the limiting portion can be engaged and connected with the bottom surface of the upper end surface.

[0012] Preferably, the upper end surface is provided with an inclined portion cooperating with the limiting portion, and the inclined portion is a slope structure located inside the vacant portion, and its slope surface is arranged to face away from the axis of the housing.

[0013] Preferably, the cap further comprises a fitting portion protruding toward the lower end surface, the outer diameter of the fitting portion matches the inner diameter of the shell, and the fitting portion can extend into the shell and circumferentially abut against the inner wall of the shell.

[0014] Preferably, the cap is provided with a vent hole along the axial direction of the shell.

[0015] Preferably, the cover further comprises at least one reinforcing rib, wherein the reinforcing rib is arranged between the lower end surface and the outer shell;

[0016] One side of the reinforcing rib is connected to the top surface of the lower end surface, and the other end is connected to the inner wall of the shell.

[0017] The sampling needle protective cap provided in the embodiments of the present application has at least the following beneficial effects:

[0018] The protective cap of the present application includes a cover body, a cap, and an automatic ejection part. The cover body can be connected with the cap to provide a space for the needle tip of the sampling needle. The automatic ejection part can automatically restore the cap to a position substantially parallel to the radial direction of the cover body after the cover body and the cap are released from the engagement. The blood collection personnel does not need to manually reset the cap, which greatly improves the convenience and efficiency of the blood collection personnel's operation and prevents blood from dripping on the sampling needle.

[0019] When the blood collector in the present application moves the cap close to the upper end face, the first connecting arm and the second connecting arm rotate and the first connecting arm and the second connecting arm gradually approach each other, that is, the angle between the first connecting arm and the second connecting arm decreases until the cap is engaged and connected with the cover body. At this time, the first connecting arm and the second connecting arm are in a basically parallel state, and the automatic ejection part is in a compressed state; when the blood collector contacts and engages the cap with the upper end face, since the first connecting arm, the second connecting arm and the connecting part of the first connecting arm and the second connecting arm protrude from the cap and the cover body, the first connecting arm automatically rotates around the second connecting arm under the action of the angle thereof, so that the first connecting arm automatically returns to a position basically parallel to the radial direction of the outer shell, and the automatic ejection part is in a reset state, which has the advantages of simple structure and reduced production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an overall structural diagram of a sampling needle protective cap in this application;

[0021] Figure 2 A side view of a sampling needle protective cap in this application;

[0022] Figure 3 for Figure 2 Section along AA;

[0023] Figure 4 This is a top view of a sampling needle protective cap in this application.

[0024] Figure numerals: 1. cover body, 11. outer shell, 12. upper end surface, 121. strip groove, 122. vacant portion, 123. inclined portion, 13. lower end surface, 14. reinforcing rib, 2. cover cap, 21. strip hole, 22. engaging portion, 221. connecting portion, 222. limiting portion, 23. matching portion, 24. vent, 3. automatic ejection portion, 31. first connecting arm, 32. second connecting arm. DETAILED DESCRIPTION

[0025] Hereinafter, the present application will be further described based on preferred embodiments with reference to the accompanying drawings.

[0026] The terms used in this specification are intended to illustrate the embodiments of this application and are not intended to limit this application. Unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will have a clear understanding of the specific meanings of the above terms in this application.

[0027] In addition, in the description of the embodiments of the present application, various components on the drawings are enlarged or reduced in size for ease of understanding, but this practice is not intended to limit the scope of protection of the present application.

[0028] The present application provides a sampling needle protective cap that can be used with the sampling needle to protect the needle tip of the sampling needle and prevent blood from dripping from the sampling needle. Figure 1-Figure 4 As shown, the protective cap includes a cover body 1, a cap 2 and an automatic ejection part 3. The cover body 1 can be connected with the cap 2 to provide an accommodating space for the needle tip of the sampling needle. The automatic ejection part 3 can automatically restore the cap 2 to a position basically parallel to the radial direction of the cover body 1 after the cover body 1 and the cap 2 are released from the engagement connection. There is no need for the blood collection personnel to manually reset the cap 2, which greatly improves the convenience and efficiency of the blood collection personnel's operation.

[0029] Furthermore, the cover body 1 includes an outer shell 11 and an upper end face 12 and a lower end face 13 connected to the axial ends of the outer shell 11. The outer shell 11 is a hollow cylindrical structure. The upper and lower end faces can be matched with the outer shell 11 from the axial ends of the outer shell 11, and the upper end face 12 can be snap-connected with the cap 2.

[0030] Specifically, a through hole is formed on the lower end surface 13 along the axial direction of the cover body 1 , so that the end of the sampling needle can enter the protective cap along the through hole.

[0031] Specifically, the upper end surface 12 is rotatably connected to the circumferential outer end of the shell 11 and can be engaged with the cap 2 to achieve a stable connection between the cover body 1 and the cap 2 .

[0032] It is conceivable that the upper end surface 12 can be rotatably connected to the cap 2 by means of a pin or the like. In some preferred embodiments of the present application, since the protective cap is a disposable medical consumable, there is no need to consider the durability of the rotatable connection structure. The upper end surface 12 is rotatably connected to the cap 2 via two connecting bridges, which can be integrally formed and manufactured while saving production costs.

[0033] Furthermore, the automatic ejection portion 3 has a reset state and a compressed state. When the upper end surface 12 is engaged with the cap 2, the automatic ejection portion 3 is in the compressed state under the action of the engagement between the upper end surface 12 and the cap 2. Figure 1-Figure 4 Both show structural schematic diagrams when the automatic ejection part is in the reset state. At this time, the upper end face 12 is not engaged with the cap 2. When the blood collection personnel release the engagement connection between the cap 2 and the upper end face 12, the cap 2 automatically rotates in the direction away from the upper end face 12 under the action of the automatic ejection part 3, and the automatic ejection part 3 automatically switches from the compressed state to the reset state.

[0034] Specifically, if Figure 3As shown, the automatic ejection part 3 is an L-shaped structure and protrudes from the cap 2 and the cover body 1. It includes a first connecting arm 31 and a second connecting arm 32. One end of the first connecting arm 31 is movably connected to the cap 2, and the other end is movably connected to the second connecting arm 32. The other end of the second connecting arm 32 is movably connected to the upper end surface 12. That is, when the blood collection personnel moves the cap 2 close to the upper end surface 12, the first connecting arm 31 and the second connecting arm 32 rotate and the first connecting arm 31 and the second connecting arm 32 gradually approach each other, that is, the angle between the first connecting arm 31 and the second connecting arm 32 decreases until the cap 2 is engaged with the cover body 1. At this time, the first connecting arm 31 and the second connecting arm 32 are in a basically parallel state, and the automatic ejection part 3 is in a compressed state; when the blood collection personnel contacts and engages the cap 2 with the upper end surface 12, since the first connecting arm 31, the second connecting arm 32 and the connecting part of the first connecting arm 31 and the second connecting arm 32 protrude from the cap 2 and the cover body 1, the first connecting arm 31 automatically rotates around the second connecting arm 32 under the action of its angle, so that the first connecting arm 31 automatically returns to a position basically parallel to the radial direction of the outer shell 11, and the automatic ejection part 3 is in a reset state.

[0035] Further, if Figure 1 As shown, the cap 2 includes a strip-shaped hole 21, and the upper end surface 12 includes a strip-shaped groove 121. The strip-shaped hole 21 and the strip-shaped groove 121 are aligned. The outer end of the strip-shaped groove 121 is movably connected to the second connecting arm 32, and the outer end of the strip-shaped hole 21 is movably connected to the first connecting arm 31, thereby providing sufficient displacement space for the first connecting arm 31 and the second connecting arm 32. It should be further explained that the outer end is the end away from the axis of the housing 11.

[0036] Further, if Figure 1 and Figure 4 As shown, the cap 2 includes a snap-fit ​​portion 22 , and the upper end surface 12 is provided with a vacant portion 122 that cooperates with the snap-fit ​​portion 22 . The snap-fit ​​portion 22 can extend into the vacant portion 122 and snap-fit ​​with the bottom surface of the upper end surface 12 .

[0037] Specifically, the locking portion 22 includes a connecting portion 221 and a limiting portion 222 . One end of the connecting portion 221 is connected to the inner wall of the cap 2 , and the other end is bent inward and extended to form the limiting portion 222 . The limiting portion 222 can be locked and connected with the bottom surface of the upper end surface 12 .

[0038] In some preferred embodiments of the present application, Figure 1 and Figure 3As shown, the upper end surface 12 is provided with an inclined portion 123 that cooperates with the limiting portion 222. The inclined portion 123 is a sloped structure located inside the vacant portion 122, with its slope facing away from the axis of the housing 11. As the cap 2 rotates toward the upper end surface 12, the limiting portion 222 gradually moves downward along the inclined portion 123 until it engages with the bottom surface of the upper end surface 12. During this downward movement, the limiting portion 222 increases the angle with the axis of the housing 11 due to the contact of the inclined portion 123, making the engagement between the cap 2 and the upper end surface 12 more stable and reliable.

[0039] In some preferred embodiments of the present application, Figure 1 、 Figure 3 and Figure 4 As shown, the cap 2 also includes a fitting portion 23 protruding toward the lower end surface 13. The outer diameter of the fitting portion 23 matches the inner diameter of the outer shell 11. The fitting portion 23 can extend into the outer shell 11 and circumferentially abut against the inner wall of the outer shell 11 to further ensure the stability of the snap-fit ​​connection between the cap 2 and the cover body 1.

[0040] In some preferred embodiments of the present application, Figure 1 、 Figure 3 and Figure 4 As shown, the cap 2 is provided with a vent hole 24 along the axial direction of the shell 11, which can balance the pressure inside and outside the cap while allowing air to pass through.

[0041] In some preferred embodiments of the present application, the cover body 1 also includes at least one reinforcing rib 14, which is arranged between the lower end surface 13 and the outer shell 11. One side of the reinforcing rib 14 is connected to the top surface of the lower end surface 13, and the other side is connected to the inner wall of the outer shell 11 to ensure the stability of the connection between the outer shell 11 and the lower end surface 13.

[0042] In some specific embodiments of the present application, the reinforcing rib 14 is a right-angled triangle structure, one right-angled side is connected to the top surface of the lower end surface 13 , and the other side is connected to the inner wall of the shell 11 .

[0043] The above is a detailed introduction to the specific implementation methods of the present application. For those skilled in the art, several improvements and modifications can be made to the present application without departing from the principles of the present application. These improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A sampling needle protective cap, characterized by: The cover comprises a cover body, a cover cap and an automatic ejection portion, wherein the cover body comprises a shell and an upper end surface and a lower end surface connected to the axial ends of the shell, the lower end surface is provided with a through hole along the axial direction of the cover body, and the upper end surface is rotatably connected to the circumferential outer end of the shell and can be engaged with the cover cap; The automatic ejection portion has a reset state and a compressed state. When the upper end surface is engaged with the cap, the automatic ejection portion is in the compressed state; when the upper end surface is not engaged with the cap, the automatic ejection portion automatically switches from the compressed state to the reset state.

2. The sampling needle protective cap according to claim 1, characterized in that: The automatic ejection part is an L-shaped structure, protruding from the cap and the cover body, and includes a first connecting arm and a second connecting arm. One end of the first connecting arm is movably connected to the cap, and the other end is movably connected to the second connecting arm. The other end of the second connecting arm is movably connected to the upper end surface.

3. The sampling needle protective cap according to claim 2, characterized in that: The cap includes a strip-shaped hole, and the upper end surface includes a strip-shaped groove. The strip-shaped hole and the strip-shaped groove are aligned, and the outer end of the strip-shaped groove is movably connected to the second connecting arm, and the outer end of the strip-shaped hole is movably connected to the first connecting arm.

4. The sampling needle protective cap according to claim 1, characterized in that: The cap includes a snap-fitting portion, the upper end surface is provided with a vacant portion cooperating with the snap-fitting portion, and the snap-fitting portion can extend into the vacant portion and snap-fit ​​with the bottom surface of the upper end surface.

5. The sampling needle protective cap according to claim 4, characterized in that: The engaging portion includes a connecting portion and a limiting portion. One end of the connecting portion is connected to the inner wall of the cap, and the other end is bent inward and extended to form the limiting portion. The limiting portion can be engaged with the bottom surface of the upper end surface.

6. The sampling needle protective cap according to claim 5, characterized in that: The upper end surface is provided with an inclined portion that cooperates with the limiting portion. The inclined portion is a slope structure located inside the vacant portion, and its slope surface is arranged to face away from the axis of the shell.

7. The sampling needle protective cap according to claim 1, characterized in that: The cap further includes a fitting portion protruding toward the lower end surface, the outer diameter of the fitting portion matches the inner diameter of the shell, and the fitting portion can extend into the shell and circumferentially abut against the inner wall of the shell.

8. The sampling needle protective cap according to claim 1, characterized in that: The cover cap is provided with a vent hole along the axial direction of the shell.

9. The sampling needle protective cap according to claim 1, characterized in that: The cover body further includes at least one reinforcing rib, wherein the reinforcing rib is arranged between the lower end surface and the shell; One side of the reinforcing rib is connected to the top surface of the lower end surface, and the other end is connected to the inner wall of the shell.

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