Injection needle protective sleeve convenient for butt joint

Abstract

The utility model discloses an injection needle protective sleeve convenient for butt joint, which comprises a sleeve body, and an anti-loose component is mounted on the outer upper part of the sleeve body. The anti-loosening assembly comprises installation frames symmetrically installed on the upper portions of the two side walls outside the sleeve body, rotating shafts installed in the installation frames, shifting rods installed in the middles of the rotating shafts and volute spiral springs installed between the shifting rods and the outer walls of the rotating shafts. The clamping plate is mounted at the top end of the shifting rod; and the clamping ring is mounted on the upper side in the sleeve body. The injection needle has the beneficial effects that the guide assembly is arranged in the sleeve body, so that a needle head of the injection needle can be guided and limited when the sleeve body is arranged on the injection needle, the needle head of the injection needle is prevented from inclining when the needle head of the injection needle is arranged on the sleeve body, and the sleeve body is more efficiently butted and arranged on the injection needle; and meanwhile, a clamping plate and a clamping ring in the anti-loosening assembly are matched to perform double fastening on the injection needle seat, so that the sleeve body is firmer after being mounted on the injection needle seat.

Description

Technical Field

[0001] The utility model relates to the technical field of injection needle protective sheaths, and particularly relates to an injection needle protective sheath convenient for docking. Background Art

[0002] Injection needles are mostly used in conjunction with syringes, mainly for delivering the therapeutic liquid medicine in the syringe into the patient's body. In order to avoid accidental puncture of the patient by the injection needle during use, a protective sheath needs to be installed outside the injection needle.

[0003] The current injection needle protective sheath is mainly composed of an integrated plastic card sleeve. Although this kind of protective sheath can protect the injection needle by being clamped outside the injection needle during use, since the inner diameter of the protective sheath is larger than the outer diameter of the injection needle tip, it is easy for the injection needle to be inserted obliquely into the inner wall of the protective sheath when being inserted into the protective sheath, resulting in inconvenient docking and installation of the protective sheath on the injection needle. At the same time, due to the small clamping force between the protective sheath and the injection needle seat after installation, the protective sheath is easy to fall off from the injection needle seat after installation, making the installation of the protective sheath unstable. Summary of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] The technical problem to be solved by the utility model is to provide an injection needle protective sheath convenient for docking, which can guide the injection needle during docking and installation and realize the firm installation of the sleeve body through double fastening functions according to the current situation of the prior art.

[0006] (2) Technical Solutions

[0007] The utility model is realized through the following technical solutions: The utility model provides an injection needle protective sheath convenient for docking, which includes a sleeve body. An anti-loosening component is installed on the upper part of the outer side of the sleeve body. The anti-loosening component includes mounting frames symmetrically installed on the upper parts of the two outer side walls of the sleeve body, rotating shafts installed in each mounting frame, a lever installed in the middle of the rotating shaft, a scroll spring installed between the lever and the outer wall of the rotating shaft, a clamping plate installed at the top of the lever, and a snap ring installed on the upper side inside the sleeve body. A guiding component is also installed inside the sleeve body. The guiding component includes a guiding sleeve installed inside the sleeve body below the snap ring and a connecting column installed between the outer wall of the guiding sleeve and the inner wall of the sleeve body.

[0008] Furthermore, a slot for inserting the end of the injection needle is also opened at the center position of the inner bottom of the sleeve body opposite to the center of the guiding sleeve.

[0009] By adopting the above technical solutions, the slot can accommodate the needle tip of the injection needle after the sleeve body is docked and installed.

[0010] Furthermore, the mounting frame is bonded to the sleeve body, and the rotating shaft is bolted to the mounting frame.

[0011] By adopting the above technical solution, it can be ensured that the rotating shaft is reliably installed and fixed on the mounting frame.

[0012] Furthermore, the rotating shaft passes through the bent portion of the shifting rod, and two free ends of the spiral spring are respectively plugged into the rotating shaft and the shifting rod.

[0013] By adopting the above technical solution, the spiral spring is mainly used to realize the automatic resetting of the lever after being moved, so that the clamping plate can be reliably clamped on the needle seat of the injection needle during the resetting process of the lever.

[0014] Furthermore, the clamping plate is bonded to the shifting rod, and the clamping plate is an arc-shaped structure.

[0015] By adopting the above technical solution, the clamping plate and the shifting rod can be reliably connected.

[0016] Furthermore, the clamping ring is bonded to the sleeve body, and the clamping ring is a rubber ring.

[0017] By adopting the above technical solution, the clamping ring can achieve the initial clamping of the sleeve body on the injection needle seat.

[0018] Furthermore, the connecting column is bonded to the guide sleeve and the inner wall of the sleeve, and the upper end of the guide sleeve is a necked structure.

[0019] By adopting the above technical solution, the guide sleeve can guide the injection needle when the sleeve body is butt-jointed and installed.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] To solve the problem that the current injection needle protective cover is mainly composed of an integral plastic sleeve. Although the protective cover of this structure can protect the injection needle by being clamped outside the injection needle during use, since the inner diameter of the protective cover is larger than the outer diameter of the injection needle tip, when the injection needle is inserted into the protective cover, it is easy to be inserted obliquely onto the inner wall of the protective cover, making it inconvenient to dock and install the protective cover on the injection needle. At the same time, due to the small clamping force between the protective cover and the injection needle hub after installation, the protective cover is prone to falling off from the injection needle hub after installation, resulting in unstable installation of the protective cover. The utility model installs a guiding component inside the sleeve body, so that when the sleeve body is installed on the injection needle, it can guide and limit the tip of the injection needle, avoiding the tip of the injection needle from being skewed during installation with the sleeve body, making the docking and installation of the sleeve body on the injection needle more efficient. At the same time, the clamping plate and the snap ring in the anti-loosening component are used to double-fasten the injection needle hub, making the sleeve body more firmly installed on the injection needle hub and not easily falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is a schematic structural diagram of an injection needle protective cover that is easy to dock according to the present utility model;

[0024] Figure 2 FIG. is a main cross-sectional view of an injection needle protective cover that is easy to dock according to the present utility model;

[0025] Figure 3 FIG. is in an injection needle protective cover that is easy to dock according to the present utility model Figure 2 The enlarged view of part A.

[0026] The reference numerals are explained as follows:

[0027] 1. Anti-loosening component; 101. Clamping plate; 102. Mounting frame; 103. Lever; 104. Rotating shaft; 105. Snap ring; 106. Volute spring; 2. Sleeve body; 3. Guiding component; 301. Connecting column; 302. Guiding sleeve; 4. Slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0029] Such as Figures 1 - 3As shown in the figure, a protective sleeve for an injection needle that is convenient for docking in this embodiment includes a sleeve body 2. An anti-loosening component 1 is installed on the upper part of the outer side of the sleeve body 2. The anti-loosening component 1 includes mounting brackets 102 symmetrically installed on the upper parts of the outer side walls of the sleeve body 2, a rotating shaft 104 installed in each mounting bracket 102, a lever 103 installed in the middle of the rotating shaft 104, a scroll spring 106 installed between the lever 103 and the outer wall of the rotating shaft 104, a clamping plate 101 installed at the top of the lever 103, and a snap ring 105 installed on the upper side inside the sleeve body 2. The scroll spring 106 is mainly used to realize the automatic reset of the lever 103, so that the clamping plate 101 can reliably clamp on the needle seat of the injection needle during the reset process of the lever 103. A guiding component 3 is also installed inside the sleeve body 2. The guiding component 3 includes a guiding sleeve 302 installed inside the sleeve body 2 below the snap ring 105 and a connecting column 301 installed between the outer wall of the guiding sleeve 302 and the inner wall of the sleeve body 2. The guiding sleeve 302 can guide the injection needle when the sleeve body 2 is docked and installed.

[0030] As Figures 1 - 3 shown in the figure, in this embodiment, a slot 4 for inserting the end of the injection needle is also opened at the center position of the bottom end inside the sleeve body 2 opposite to the guiding sleeve 302. The slot 4 can accommodate the needle tip of the injection needle after the sleeve body 2 is docked and installed. The mounting bracket 102 is bonded to the sleeve body 2, and the rotating shaft 104 is bolted to the mounting bracket 102, which can ensure the reliable installation and fixation of the rotating shaft 104 on the mounting bracket 102. The rotating shaft 104 passes through the bent part of the lever 103, and the two free ends of the scroll spring 106 are respectively inserted into the rotating shaft 104 and the lever 103. The clamping plate 101 is bonded to the lever 103, and the clamping plate 101 is an arc-shaped structure, which can realize the reliable connection between the clamping plate 101 and the lever 103.

[0031] As Figures 1 - 3 shown in the figure, in this embodiment, the snap ring 105 is bonded to the sleeve body 2. The snap ring 105 is a rubber ring. The snap ring 105 can realize the preliminary clamping of the sleeve body 2 on the needle seat of the injection needle. The connecting column 301 is bonded to both the guiding sleeve 302 and the inner wall of the sleeve body 2. The upper end of the guiding sleeve 302 is a reduced-opening structure.

[0032] The specific implementation process of this embodiment is as follows: During use, only need to install the sleeve body 2 on the needle seat of the injection needle, and then the whole protective sleeve can be put into use. When the sleeve body 2 is docked and installed, by means of the guiding component 3 installed inside the sleeve body 2, the sleeve body 2 can guide and limit the needle tip of the injection needle when installing on the injection needle, avoiding the needle tip of the injection needle from being skewed when installing with the sleeve body 2, making the docking and installation of the sleeve body 2 on the injection needle more efficient. At the same time, cooperate with the clamping plate 101 and the snap ring 105 in the anti-loosening component 1 to double-fasten the needle seat of the injection needle, making the sleeve body 2 more firmly installed on the needle seat of the injection needle and not easily falling off.

[0033] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather should be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A syringe needle protective cover that is easy to dock, characterized in that: The invention comprises a sleeve (2), wherein an anti-loosening assembly (1) is installed on the outer upper part of the sleeve (2), wherein the anti-loosening assembly (1) comprises a mounting frame (102) symmetrically mounted on the upper part of the outer two side walls of the sleeve (2), a rotating shaft (104) mounted in each of the mounting frames (102), a lever (103) mounted in the middle of the rotating shaft (104), a spiral spring (106) mounted between the lever (103) and the outer wall of the rotating shaft (104), a clamping plate (101) mounted on the top of the lever (103) and a retaining ring (105) mounted on the inner upper side of the sleeve (2), and a guide assembly (3) is also installed in the sleeve (2), wherein the guide assembly (3) comprises a guide sleeve (302) mounted in the sleeve (2) and located below the retaining ring (105), and a connecting column (301) mounted between the outer wall of the guide sleeve (302) and the inner wall of the sleeve (2).

2. The injection needle protective cover that is easy to dock according to claim 1, characterized in that: A slot (4) for inserting the end of an injection needle is provided at the inner bottom end of the sleeve body (2) at a position directly opposite to the center of the guide sleeve (302).

3. The injection needle protective cover that is easy to dock according to claim 1, characterized in that: The mounting frame (102) is bonded to the sleeve body (2), and the rotating shaft (104) is bolted to the mounting frame (102).

4. The injection needle protective cover that is easy to dock according to claim 1, characterized in that: The rotating shaft (104) passes through the bent portion of the shifting rod (103), and the two free ends of the spiral spring (106) are respectively plugged into the rotating shaft (104) and the shifting rod (103).

5. The injection needle protective cover that is easy to dock according to claim 1, characterized in that: The clamping plate (101) is bonded to the shifting rod (103), and the clamping plate (101) is an arc-shaped structure.

6. The injection needle protective cover that is easy to dock according to claim 1, characterized in that: The clamping ring (105) is bonded to the sleeve body (2), and the clamping ring (105) is a rubber ring.

7. The injection needle protective cover that is easy to dock according to claim 1, characterized in that: The connecting column (301) is bonded to the guide sleeve (302) and the inner wall of the sleeve body (2), and the upper end of the guide sleeve (302) is a contracted structure.

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