Disposable sterile injection needle with sealing device

Abstract

The utility model provides a disposable sterile injection needle with a sealing device, and belongs to the field of medical instruments. The device comprises a shell, a cavity is formed in the shell, a needle plate is arranged in the cavity, a plurality of needle tubes are arranged on the needle plate, the needle tubes extend out of the shell, a liquid pushing block arranged in the cavity in a sliding mode is arranged on the side, away from the needle tubes, of the needle plate, and a liquid injection cavity is formed between the liquid pushing block and the needle plate. The liquid pushing block is provided with a liquid injection cavity, the liquid injection cavity is communicated with a plurality of needle tubes, the liquid pushing block is provided with a liquid guide connector, a liquid guide cavity is formed in the liquid guide connector and communicated with the liquid injection cavity, at least two sealing rings are arranged on the outer surface of the liquid pushing block, and the sealing rings abut against the inner wall of the cavity.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical apparatus and instruments, especially relates to a disposable sterile injection needle with sealing device. BACKGROUND

[0002] In today's beauty medical market, water light needle treatment has gradually become a popular skin improvement method. However, the liquid leakage problem is a security hidden danger that cannot be ignored. In the prior art, due to the design defects of the internal sealing performance of the needle, the liquid leaks during the injection process, which not only causes the waste of the liquid medicine, increases the treatment cost, but also affects the treatment effect of the patient due to the liquid leakage.

[0003] For example, a disposable sterile injection needle is disclosed in Chinese patent documents [patent application number: CN202110847834.6], the upper end face of the shell is rotationally connected with an adjusting knob, the adjusting knob is driven and controlled with a liquid guide connector, the liquid guide connector is movably arranged in the interior of the shell, the output end of the liquid guide connector is communicated with a needle holder, the end of the needle holder away from the liquid guide connector is communicated with an injection needle, and the needle holder is movably arranged in the interior of the shell, the adjusting knob is used for controlling the reciprocating motion of the liquid guide connector in the interior of the shell, and the lower end face of the shell is fixedly connected with a suction tube. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above -mentioned problem, provides a disposable sterile injection needle with sealing device.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A disposable sterile injection needle with sealing device, including the shell, the shell is equipped with cavity, the cavity is equipped with needle plate, the needle plate is equipped with a plurality of needle tubes, the needle tube extends out of the shell, the side of the needle plate away from the needle tube has the liquid pushing block that slides in the cavity, the liquid pushing block is equipped with the liquid guide connector, the liquid guide connector is equipped with the liquid guide cavity, the liquid guide cavity is communicated with the liquid injection cavity, the liquid pushing block is equipped with the liquid guide connector, the liquid guide cavity is communicated with the liquid injection cavity, the outer surface of the liquid pushing block is equipped with at least two circles of sealing rings, and the sealing ring is opposite to the inner wall of the cavity.

[0007] In the above-mentioned disposable sterile injection needle with sealing device, the liquid injection cavity has a plurality of protection blocks arranged on the surface of the needle plate.

[0008] In the above-mentioned disposable sterile injection needle with sealing device, the protection block is made of rubber material.

[0009] In the disposable sterile injection needle with sealing device, the shell is rotatably provided with a liquid injection advancing sleeve, the liquid injection advancing sleeve is internally provided with internal threads, and the liquid guide connector penetrates through the liquid injection advancing sleeve and is externally provided with external threads connected with the internal threads.

[0010] In the disposable sterile injection needle with sealing device, the liquid injection advancing sleeve is provided with a sheath sleeve, the sheath sleeve extends to the outer surface of the shell and wraps the outer surface of the shell at the cavity opening, and the sheath sleeve covers the cavity opening with the liquid injection advancing sleeve.

[0011] In the disposable sterile injection needle with sealing device, the sheath sleeve is internally provided with an inner embedding ring, the outer surface of the shell is provided with an outer embedding ring, and the inner embedding ring abuts against the outer embedding ring.

[0012] In the disposable sterile injection needle with sealing device, the outer surface of the liquid injection advancing sleeve is provided with a plurality of convex strips or / and concave grooves.

[0013] In the disposable sterile injection needle with sealing device, the outer surface of the liquid injection advancing sleeve away from the shell is provided with a scale disc.

[0014] In the disposable sterile injection needle with sealing device, the plurality of needle tubes are arranged in a rectangular array.

[0015] In the disposable sterile injection needle with sealing device, the shell is further provided with a protection cavity, the needle tube is arranged in the protection cavity and the needle head part extends out of the protection cavity, and the needle tube is further provided with a protection sleeve.

[0016] Compared with the prior art, the disposable sterile injection needle with sealing device has the following advantages:

[0017] 1. Since the liquid pushing block is provided with at least two sealing rings, the sealing between the liquid pushing block and the inner wall of the cavity is ensured, and air is prevented from entering the liquid injection cavity.

[0018] 2. The air bubbles are retained in the liquid injection cavity by the protection block, and in the process of injection, the liquid pushing block abuts against the protection block and retains a certain volume of the liquid injection cavity.

[0019] 3. When the liquid pushing block is about to abut against the needle plate, the protection block is squeezed, the rebound force generated by the deformation of the protection block squeezes the liquid pushing block, so as to be fed back to the hand of the doctor, thereby reminding the doctor that the injection is about to be completed, and the vibration caused by direct collision is also prevented.

[0020] 4. In the injection molding process, the surface of the protection cavity mouth is in contact with the skin, which plays a blocking role, prevents the needle tube from inserting too deep into the skin, and because the skin is embedded in the protection cavity, the needle tube is further prevented from inserting too deep into the skin. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure;

[0022] Figure 2 is Figure 1 one of the side views;

[0023] Figure 3 is Figure 1 another side view in another direction of

[0024] Figure 4 is Figure 1 an outer surface schematic diagram.

[0025] In the figure: shell 10, cavity 11, needle plate 12, needle tube 13, liquid pushing block 14, liquid injection cavity 15, liquid guide connector 16, liquid guide cavity 17, sealing ring 18, protection block 19, liquid injection pushing sleeve 20, ring cover 21, inner embedded ring 22, outer embedded ring 23, convex strip 24, scale disc 25, protection cavity 26, protection sleeve 27. DETAILED DESCRIPTION

[0026] The utility model will be made further detailed description in combination with the drawings and specific implementation.

[0027] The utility model provides a disposable sterile injection needle with sealing device, which combines Figures 1-4 As shown in the figure, including the shell 10, the shell 10 is equipped with the cavity 11, the cavity 11 is equipped with the needle plate 12, the needle plate 12 is equipped with a plurality of needle tubes 13, the needle tube 13 extends out of the shell 10, the needle plate 12 is away from the needle tube 13 one side has the liquid pushing block 14 of sliding arrangement in the cavity 11, the liquid pushing block 14 and the needle plate 12 are equipped with the liquid injection cavity 15, the liquid injection cavity 15 is communicated with a plurality of needle tubes 13, the liquid pushing block 14 is equipped with the liquid guide connector 16, the liquid guide connector 16 is equipped with the liquid guide cavity 17, the liquid guide cavity 17 is communicated with the liquid injection cavity 15, the liquid pushing block 14 outer surface is equipped with at least two sealing rings 18, the sealing ring 18 and the cavity 11 inner wall are in contact.

[0028] In the embodiment, during the process of putting the medicine into the injection cavity 15, the pushing block 14 is in contact with the needle plate 12, the liquid guide connector 16 moves together with the pushing block 14 away from the needle plate 12, and the medicine is injected into the injection cavity 15 through the injection cavity 15. After enough medicine is in the injection cavity 15, the pushing block 14 is pushed back to discharge part of the medicine through the needle tube 13 and squeeze out the air remaining in the injection cavity 15. Since the pushing block 14 is provided with at least two sealing rings 18, the sealing between the pushing block 14 and the inner wall of the cavity 11 is ensured, and the air is prevented from entering the injection cavity 15.

[0029] The injection cavity 15 is provided with a plurality of protection blocks 19 arranged on the surface of the needle plate 12.

[0030] In the embodiment, air bubbles can be injected into the injection cavity 15 during the process of injecting the medicine into the injection cavity 15. If the air is not discharged by pushing back the pushing block 14 before injection, the air bubbles can be retained in the injection cavity 15 by the protection blocks 19. During the injection process, the pushing block 14 will abut against the protection blocks 19 and retain a certain volume of the injection cavity 15.

[0031] The protection blocks 19 are made of rubber material.

[0032] In the embodiment, when the pushing block 14 is about to abut against the needle plate 12, the protection blocks 19 are squeezed, and the rebound force generated by the deformation of the protection blocks 19 pushes the pushing block 14, so as to be fed back to the doctor's hand, thereby reminding the doctor that the injection is about to be completed, and the vibration caused by direct collision is prevented.

[0033] The shell 10 is rotationally provided with an injection pushing sleeve 20, the injection pushing sleeve 20 is internally threaded, and the liquid guide connector 16 penetrates the injection pushing sleeve 20 and is externally threaded and connected with the internal thread.

[0034] In the embodiment, during the injection process, the injection pushing sleeve 20 is rotated, the liquid guide connector 16 moves together with the pushing block 14 through the engagement of the internal thread and the external thread, and the liquid guide connector 16 can not be cylindrical or fixed with the external injection device to prevent the liquid guide connector 16 from rotating during the movement.

[0035] The injection pushing sleeve 20 is provided with a wrapping sleeve 21, the wrapping sleeve 21 extends to the outer surface of the shell 10 and wraps the outer surface of the shell 10 at the cavity opening of the cavity 11, and the wrapping sleeve 21 covers the cavity opening of the cavity 11 with the injection pushing sleeve 20.

[0036] In the embodiment, the contact area of the sleeve 21 with the shell 10 is increased, the cavity mouth of the cavity 11 is located inside the sleeve 21, and the internal sealing degree is further improved. In addition, the sleeve 21 increases the outer surface area of the liquid injection advancing sleeve 20, and the adjustment can be more stable during the rotation of the liquid injection advancing sleeve 20 by the doctor.

[0037] The sleeve 21 is internally provided with an inner embedding ring 22, the shell 10 is externally provided with an outer embedding ring 23, and the inner embedding ring 22 is in abutment with the outer embedding ring 23.

[0038] In the embodiment, the sleeve 21 cannot shake left and right and cannot fall out of the shell 10 due to the abutment of the inner embedding ring 22 and the outer embedding ring 23.

[0039] The outer surface of the liquid injection advancing sleeve 20 is provided with a plurality of convex strips 24 or / and concave grooves.

[0040] In the embodiment, the convex strips 20 or / and concave grooves improve the contact feeling of the doctor, and the adjustment can be more stable during the rotation of the liquid injection advancing sleeve 20 by the doctor.

[0041] The outer surface of the liquid injection advancing sleeve 20 away from the shell 10 is provided with a scale disc 25.

[0042] In the embodiment, the scale disc 25 can reflect how much distance the liquid pushing block 14 advances, that is, how much volume of the liquid medicine is injected.

[0043] The plurality of needle tubes 13 are arranged in a rectangular array and arranged in 5X5.

[0044] The shell 10 is further provided with a protection cavity 26, the needle tube 13 is placed in the protection cavity 26 and the needle part extends out of the protection cavity 26, and the needle tube 13 is further sleeved with a protection sleeve 27.

[0045] In the embodiment, during the injection molding process, the surface at the cavity mouth of the protection cavity 26 is in abutment with the skin, and the blocking effect is achieved, the needle tube 13 is prevented from being inserted into the skin too deeply, and the skin is embedded into the protection cavity 26, and the needle tube 13 is further prevented from being inserted into the skin too deeply through the protection sleeve 27.

[0046] The specific embodiments described in the present text are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or adopt similar ways to replace, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0047] Although the shell 10, the cavity 11, the needle plate 12, the needle tube 13, the liquid pushing block 14, the liquid injection cavity 15, the liquid guide connector 16, the liquid guide cavity 17, the sealing ring 18, the protection block 19, the liquid injection pushing sleeve 20, the ring cover 21, the inner embedded ring 22, the outer embedded ring 23, the convex strip 24, the scale disc 25, the protection cavity 26, the protection cover 27 and the like are used more in the present application, using these terms is only for more conveniently describing and explaining the essence of the present application; explaining them as any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A single-use sterile injection needle with sealing means comprising a housing (10), characterized in that, The shell (10) is internally provided with a cavity (11), the cavity (11) is internally provided with a needle plate (12), the needle plate (12) is provided with a plurality of needle tubes (13), the needle tube (13) extends out of the shell (10), the needle plate (12) is provided with a liquid pushing block (14) slidingly arranged in the cavity (11) on the side away from the needle tube (13), the liquid pushing block (14) and the needle plate (12) are provided with a liquid injection cavity (15), the liquid injection cavity (15) is communicated with the plurality of needle tubes (13), the liquid pushing block (14) is provided with a liquid guide connector (16), the liquid guide connector (16) is internally provided with a liquid guide cavity (17), the liquid guide cavity (17) is communicated with the liquid injection cavity (15), the outer surface of the liquid pushing block (14) is provided with at least two sealing rings (18), and the sealing ring (18) is abutted with the inner wall of the cavity (11).

2. A single-use sterile injection needle with a sealing device according to claim 1, characterized in that The liquid injection cavity (15) is provided with a plurality of protection blocks (19) arranged on the surface of the needle plate (12).

3. A single-use sterile injection needle with a sealing device according to claim 2, characterized in that The protection block (19) is made of rubber material.

4. The single-use, sterile injection needle with sealing device of claim 1, wherein, The shell (10) is rotationally provided with a liquid injection pushing sleeve (20), the liquid injection pushing sleeve (20) is internally provided with an internal thread, and the liquid guide connector (16) penetrates the liquid injection pushing sleeve (20) and is provided with an external thread connected with the internal thread.

5. A single-use sterile injection needle with a sealing device according to claim 4, characterized in that The liquid injection pushing sleeve (20) is provided with a ring sleeve (21), the ring sleeve (21) extends to the outer surface of the shell (10) and wraps the outer surface of the shell (10) at the cavity (11) opening in the cavity (11), and the ring sleeve (21) and the liquid injection pushing sleeve (20) cover the cavity (11) opening.

6. A single-use sterile injection needle with a sealing device according to claim 5, characterized in that The ring sleeve (21) is internally provided with an inner embedding ring (22), and the outer surface of the shell (10) is provided with an outer embedding ring (23), and the inner embedding ring (22) is abutted with the outer embedding ring (23).

7. The single-use, sterile injection needle with sealing means of claim 4, wherein, The outer surface of the liquid injection pushing sleeve (20) is provided with a plurality of convex strips (24) or / and recesses.

8. The single-use, sterile injection needle with sealing device of claim 4, wherein, The outer surface of the liquid injection pushing sleeve (20) on the side away from the shell (10) is provided with a scale disc (25).

9. The single-use, sterile injection needle with sealing device of claim 1, wherein, The plurality of needle tubes (13) are arranged in a rectangular array.

10. The single-use, sterile injection needle with sealing device of claim 1, wherein, The shell (10) is further provided with a protection cavity (26), the needle tube (13) is placed in the protection cavity (26) and the needle part extends out of the protection cavity (26), and the needle tube (13) is further provided with a protection sleeve (27).

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