Disposable sterile injection needle capable of adjusting needle withdrawing length

Abstract

The utility model provides a disposable sterile injection needle capable of adjusting the needle withdrawing length, and belongs to the field of medical instruments. The device comprises a shell, a distance adjusting cavity is formed in the shell, a glue injection sleeve is arranged in the distance adjusting cavity in a sliding mode, the outer surface of the glue injection sleeve is completely matched with the inner wall of the distance adjusting cavity, a needle base is arranged in the glue injection sleeve, a plurality of needle tubes are arranged on the needle base, and the ends, away from the needle base, of the needle tubes penetrate through and extend out of the glue injection sleeve. A liquid guide connecting pipe is arranged on the side, away from the needle tubes, of the needle base, a liquid guide flowing cavity is formed in the liquid guide connecting pipe, the liquid guide flowing cavity is communicated with the needle tubes, the liquid guide connecting pipe extends out of the shell, and a distance adjusting structure is arranged between the liquid guide connecting pipe and the shell.

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 adjustable needle length. BACKGROUND

[0002] In today's cosmetic medical market, water light needle treatment has gradually become a popular skin improvement method. However, the existing water light needle needle head has exposed a series of problems to be solved in practical application. The traditional nine-needle design has obvious limitations in injection efficiency. Due to the small number of needle heads, it often takes a long time to complete a comprehensive skin injection treatment, which not only increases the treatment time of patients, but also affects the timeliness and effect of treatment to some extent.

[0003] In addition, the control accuracy of needle length has always been a difficult problem. The existing adjustment mechanism is mostly rough and cannot achieve fine adjustment of the needle length, which makes it difficult to customize quantitatively and accurately according to the skin thickness, elasticity and specific treatment site needs of patients during treatment, which may cause the injection of liquid medicine to be too deep or too shallow, affecting the treatment effect, and even may cause adverse reactions such as skin ecchymosis and swelling.

[0004] For example, the Chinese patent document discloses a disposable sterile injection needle [patent application number: CN202110847834.6], which is connected with an adjusting knob at the upper end face of the shell, the adjusting knob drives and controls 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. UTILITARIAN CONTENT

[0005] The utility model aims at the above-mentioned problem and provides a disposable sterile injection needle with adjustable needle length.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a disposable sterile injection needle of adjustable needle length, including the casing, the distance adjusting cavity is equipped in casing, the injection glue sleeve is slid in distance adjusting cavity, the outer surface of injection glue sleeve is complete with distance adjusting cavity inner wall, the needle seat is equipped in injection glue sleeve, a plurality of needle tubes are equipped on needle seat, the one end of needle tube away from needle seat extends out injection glue sleeve, the liquid guide connector is equipped on the side of needle seat away from needle tube, the liquid guide flow cavity is equipped in liquid guide connector, the liquid guide flow cavity is connected with every needle tube, the liquid guide connector extends out casing and is equipped with distance adjusting structure between liquid guide connector and casing.

[0008] In the disposable sterile injection needle of adjustable needle length, the distance adjusting structure includes an adjusting sleeve rotatably arranged on the casing, the adjusting sleeve is internally threaded, and the liquid guide connector extends through the adjusting sleeve and is externally threaded connected with the internal thread.

[0009] In the disposable sterile injection needle of adjustable needle length, the adjusting sleeve is provided with a sleeve cover, the sleeve cover extends to the outer surface of the casing and wraps the outer surface of the casing at the cavity opening of the distance adjusting cavity, and the sleeve cover and the adjusting sleeve cover the cavity opening of the distance adjusting cavity.

[0010] In the disposable sterile injection needle of adjustable needle length, the sleeve cover is internally provided with an embedded ring, the outer surface of the casing is externally provided with an embedded ring, and the embedded ring and the embedded ring are in abutment.

[0011] In the disposable sterile injection needle of adjustable needle length, the outer surface of the adjusting sleeve is provided with a plurality of convex strips or / and recesses.

[0012] In the disposable sterile injection needle of adjustable needle length, the outer surface of the adjusting sleeve away from the casing is provided with a scale disc.

[0013] In the disposable sterile injection needle of adjustable needle length, the distance adjusting cavity away from the adjusting sleeve has a protective abutting surface arranged in the casing, the protective abutting surface can abut against the injection glue sleeve, and the needle tube slidably extends through the protective abutting surface.

[0014] In the disposable sterile injection needle of adjustable needle length, the protective abutting surface and the injection glue sleeve are further provided with a plurality of rubber soft pads arranged on the protective abutting surface, and the needle tube slidably extends through the rubber soft pads.

[0015] In the disposable sterile injection needle of adjustable needle length, the plurality of needle tubes are arranged in a rectangular array.

[0016] In the disposable sterile injection needle with adjustable needle length, the several needle tubes are arranged in four rows and four columns.

[0017] Compared with the prior art, the adjustable needle length disposable sterile injection needle has the advantages that:

[0018] 1. The distance adjusting structure enables the liquid guide connector to move in the shell, and the movement of the liquid guide connector enables the glue injection sleeve and the needle seat to move, so that the needle tube is extended or retracted, thereby the length of the needle tube extending out can be adjusted according to the thickness and elasticity of the patient's skin and the requirements of the specific treatment site, the treatment effect is prevented from being affected by the over-deep or over-shallow injection of the liquid medicine, and adverse reactions such as skin ecchymosis and redness are prevented.

[0019] 2. On one hand, the sleeve increases the contact area with the shell, so that the cavity opening of the distance adjusting cavity is located inside the sleeve, and the internal sealing degree is further improved; on the other hand, the sleeve increases the outer surface area of the adjusting sleeve, so that the adjusting can be more stably performed during the rotation of the adjusting sleeve by the doctor.

[0020] 3. When the glue injection sleeve is about to abut against the protection abutting surface, the rubber cushion is squeezed, and the rebound force generated by the deformation of the rubber cushion pushes the glue injection sleeve, so as to be fed back to the adjusting sleeve, the rotation of the adjusting sleeve is resisted, the doctor is reminded that the limit distance position is reached, and the glue injection sleeve is prevented from colliding with the protection abutting surface to cause abrasion and affect the precision. BRIEF DESCRIPTION OF DRAWINGS

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

[0022] Figure 2 is Figure 1 one side view;

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

[0024] Figure 4 is Figure 1 a schematic view of the outer surface.

[0025] In the figure: shell 10, distance adjusting cavity 11, glue injection sleeve 12, needle seat 13, needle tube 14, liquid guide connector 15, adjusting sleeve 16, sleeve 17, embedded ring 18, outer embedded ring 19, convex strip 20, scale disc 21, protection abutting surface 22, rubber cushion 23, liquid guide flow cavity 24. DETAILED DESCRIPTION

[0026] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0027] The utility model provides a disposable sterile injection needle with adjustable needle length, which is combined withFigures 1-4 As shown, it comprises a shell 10, the shell 10, the shell 10 is provided with a distance adjusting cavity 11, the distance adjusting cavity 11 is slidably provided with a glue injection sleeve 12, the outer surface of the glue injection sleeve 12 is completely with the inner wall of the distance adjusting cavity 11, the glue injection sleeve 12 is provided with a needle seat 13, the needle seat 13 is provided with a plurality of needle tubes 14, the needle tubes 14 away from the needle seat 13 one end extends out of the glue injection sleeve 12, the needle seat 13 away from the needle tube 14 one side is provided with a liquid guide connecting pipe 15, the liquid guide connecting pipe 15 is provided with a liquid guide flow cavity 24, the liquid guide flow cavity 24 is communicated with each needle tube 14, the liquid guide connecting pipe 15 extends out of the shell 10 and is provided with a distance adjusting structure between the shell 10.

[0028] In this embodiment, the movement of the liquid guide connecting pipe 15 in the shell 10 is caused by the work of the distance adjusting structure, the movement of the liquid guide connecting pipe 15 can make the glue injection sleeve 12 and the needle seat 13 move to extend or retract the needle tube 14, so that the length of the needle tube 14 can be extended according to the thickness, elasticity of the patient's skin and the needs of the specific treatment site, which can prevent the drug injection too deep or too shallow to affect the treatment effect and the adverse reactions such as skin ecchymosis, swelling and so on. The injection liquid flows in the liquid guide flow cavity 24, the injection needle is connected with the injection device, and the drug liquid flows into each needle tube 14 through the liquid guide flow cavity 24 during the injection of the drug liquid. In addition, the glue injection sleeve 12 is clamped by the needle seat 13 and the inner wall of the distance adjusting cavity 11, which improves the internal sealing degree.

[0029] The distance adjusting structure comprises a adjusting sleeve 16 rotatably arranged on the shell 10, the adjusting sleeve 16 is provided with an internal thread, and the liquid guide connecting pipe 15 penetrates the adjusting sleeve 16 and is provided with an external thread connected with the internal thread.

[0030] In this embodiment, during the adjustment of the extension distance of the needle tube 14, the adjusting sleeve 16 is rotated, and the engagement of the internal thread and the external thread makes the liquid guide connecting pipe 15 move, and the liquid guide connecting pipe 15 can not be cylindrical or the liquid guide connecting pipe 15 is fixed with the external injection device to prevent the liquid guide connecting pipe 15 from rotating during the movement.

[0031] The adjusting sleeve 16 is provided with a wrapping sleeve 17, the wrapping sleeve 17 extends to the outer surface of the shell 10 and wraps the outer surface of the shell 10 at the cavity opening of the distance adjusting cavity 11, and the wrapping sleeve 17 covers the cavity opening of the distance adjusting cavity 11 with the adjusting sleeve 16.

[0032] In the embodiment, the contact area between the sleeve 17 and the shell 10 is increased, the cavity opening of the distance adjusting cavity 11 is located inside the sleeve 17, and the internal sealing degree is further improved. In addition, the sleeve 17 increases the outer surface area of the adjusting sleeve 16, and the adjustment can be more stable during the rotation of the adjusting sleeve 16 by the doctor.

[0033] The sleeve 17 is internally provided with an inner sleeve 18, the shell 10 is externally provided with an outer sleeve 19, and the inner sleeve 18 is in abutment with the outer sleeve 19.

[0034] In the embodiment, the abutment between the inner sleeve 18 and the outer sleeve 19 prevents the sleeve 17 from shaking left and right and falling out of the shell 10.

[0035] The adjusting sleeve 16 is externally provided with a plurality of convex strips 20 or / and concave grooves.

[0036] 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 adjusting sleeve 16 by the doctor.

[0037] The adjusting sleeve 16 is externally provided with a scale disc 21 on the side away from the shell 10.

[0038] In the embodiment, during the rotation of the adjusting sleeve 16, the numerical value of the scale disc 21 can reflect the length of the needle tube 14 at this time, and the rotation is performed to the corresponding numerical value according to the actual requirement.

[0039] The distance adjusting cavity 11 is provided with a protective abutting surface 22 arranged in the shell 10 at the end away from the adjusting sleeve 16, the protective abutting surface 22 can abut against the glue injection sleeve 12, and the needle tube 14 is slidably penetrated through the protective abutting surface 22.

[0040] In the embodiment, in order to prevent the needle tube 14 from extending too long and prevent the external thread from being disconnected with the internal thread, the protective abutting surface 22 is arranged to stop the glue injection sleeve 12 from continuously moving when the glue injection sleeve 12 moves to the limit distance.

[0041] The protective abutting surface 22 and the glue injection sleeve 12 are further provided with a plurality of rubber soft pads 23 arranged on the protective abutting surface 22, and the needle tube 14 is slidably penetrated through the rubber soft pads 23.

[0042] In the embodiment, when the glue injection sleeve 12 is about to abut against the protection abutting surface 22, the rubber cushion 23 is pressed and deformed, and the rebound force generated by the deformation of the rubber cushion 23 pushes the glue injection sleeve 12, so as to feed back to the adjusting sleeve 16, the rotation of the adjusting sleeve 16 is resisted, and the doctor is reminded that the limit distance position is reached, so as to prevent the glue injection sleeve 12 from colliding with the protection abutting surface 22 to cause abrasion and affect the fine degree.

[0043] The plurality of needle tubes 14 are arranged in a rectangular array.

[0044] The plurality of needle tubes 14 are arranged in 4 rows and 4 columns.

[0045] The specific embodiments described herein 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 use similar ways to replace, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

[0046] Although the shell 10, the distance adjusting cavity 11, the glue injection sleeve 12, the needle seat 13, the needle tube 14, the liquid guide connecting pipe 15, the adjusting sleeve 16, the ring sleeve 17, the embedded ring 18, the outer embedded ring 19, the convex strip 20, the scale disc 21, the protection abutting surface 22, the rubber cushion 23, the liquid guide flow cavity 24 and the like are used more frequently herein, the use of these terms is only for more convenient description and explanation of the essence of the present application; any kind of additional limitation is contrary to the spirit of the present application.

Claims

1. A disposable, sterile injection needle with adjustable needle length comprising a housing (10), characterized in that The shell (10), the distance adjusting cavity (11) is equipped in the shell (10), the glue injection sleeve (12) is slid in the distance adjusting cavity (11), the glue injection sleeve (12) outer surface is completely with distance adjusting cavity (11) inner wall, the needle seat (13) is equipped in the glue injection sleeve (12), a plurality of needle tubes (14) are equipped on the needle seat (13), the needle tube (14) one end away from the needle seat (13) extends out the glue injection sleeve (12), the liquid guide connecting pipe (15) is equipped on the side away from the needle tube (14) of the needle seat (13), the liquid guide flow cavity is equipped in the liquid guide connecting pipe (15), the liquid guide flow cavity is communicated with every needle tube (14), the liquid guide connecting pipe (15) extends out the shell (10) and is equipped with distance adjusting structure between the shell (10).

2. A disposable sterile injection needle with adjustable needle length as claimed in claim 1, wherein, The distance adjusting structure includes the adjusting sleeve (16) rotationally arranged on the shell (10), the adjusting sleeve (16) is equipped with internal threads, the liquid guide connecting pipe (15) penetrates the adjusting sleeve (16) and is equipped with external threads connected with the internal threads.

3. The disposable sterile injection needle with adjustable needle projection length according to claim 2, characterized in that The adjusting sleeve (16) is equipped with the coil cover sleeve (17), the coil cover sleeve (17) extends to the outer surface of the shell (10) and wraps the outer surface of the shell (10) at the cavity opening of the distance adjusting cavity (11) inside, the coil cover sleeve (17) and the adjusting sleeve (16) cover the cavity opening of the distance adjusting cavity (11).

4. The disposable sterile injection needle with adjustable needle projection length according to claim 3, characterized in that, The coil cover sleeve (17) is equipped with the inner embedded ring (18), the outer surface of the shell (10) is equipped with the outer embedded ring (19), the inner embedded ring (18) and the outer embedded ring (19) are in abutment.

5. The disposable, sterile injection needle of claim 2, wherein the needle length is adjustable. The outer surface of the adjusting sleeve (16) is equipped with a plurality of convex strips (20) or / and recesses.

6. The disposable, sterile injection needle with adjustable needle length of claim 2, wherein, The outer surface of the adjusting sleeve (16) away from the shell (10) is equipped with the scale disc (21).

7. The disposable, sterile injection needle of claim 1, wherein, The distance adjusting cavity (11) is equipped with the protective abutting surface (22) arranged in the shell (10) at one end away from the adjusting sleeve (16), the protective abutting surface (22) can abut against the glue injection sleeve (12), the needle tube (14) slides and penetrates the protective abutting surface (22).

8. The disposable, sterile injection needle of claim 7, wherein the needle length is adjustable. The protective abutting surface (22) and the glue injection sleeve (12) are further equipped with a plurality of rubber soft pads (23) arranged on the protective abutting surface (22), the needle tube (14) slides and penetrates the rubber soft pad (23).

9. The disposable, sterile injection needle of claim 1, wherein, A plurality of needle tubes (14) are arranged in a rectangular array.

10. The disposable, sterile injection needle of claim 1, wherein, A plurality of needle tubes (14) are arranged in 4 rows and 4 columns.

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