Multi-head spring ear tip bloodletting needle

Abstract

The utility model provides a multi-head spring ear tip bloodletting needle, which comprises a plurality of acupuncture needles (1), the top of the housing (3) is provided with a through hole (31), the bottom of the housing (3) is fixedly provided with a needling needle guide plate (4), and the needling needle guide plate (4) is internally provided with a plurality of guide holes (41) respectively corresponding to the plurality of needling needles (1); the needle cylinder (2) is arranged in a cavity defined by the housing (3) and the needling needle guide plate (4), the outer wall of the needle cylinder (2) is attached to the inner wall of the housing (3), one end of the needling needle (1) is fixed in the needle cylinder (2), and the other end of the needling needle (1) extends out of the needle cylinder (2) and extends into the guide hole (41); one end of the driving spring (5) is connected with the top of the needle cylinder (2), the other end of the driving spring (5) is a free end and extends out of the cover shell (3) along the through hole (31), when the free end is not subjected to driving pressure, the needle cylinder (2) and the cover shell (3) are kept relatively fixed by means of friction force, the needling needle (1) does not extend out of the guide hole (41), and when the free end is subjected to driving pressure, the needle cylinder (2) moves along the cover shell (3). Therefore, the needling needle (1) moves and extends out of the guide hole (41).

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments more particularly to a multi-head spring ear tip blood letting needle. BACKGROUND

[0002] The blood-letting therapy of traditional Chinese medicine is a treatment method of letting out a small amount of blood by needling some acupoints or small veins on the body surface. The blood-letting of ear tips is beneficial to the treatment of various diseases. However, in order to improve the effect of blood-letting, multiple blood-letting holes need to be punctured on the ear tip during needling. The existing multi-head adjustable blood-letting needle has a relatively thick needle head, which is not suitable for the ear tip. The ear tip blood-letting needle with a single needle is punctured one by one, which easily increases the pain of the patient and has a low efficiency of needling. SUMMARY

[0003] The utility model provides a multi-head spring ear tip blood-letting needle, which comprises a plurality of needling needles, a cover, a needle cylinder, a driving spring and a protective cover. The top of the cover is provided with a through hole, and the bottom of the cover is fixed with a needling needle guide plate. The needling needle guide plate is provided with a plurality of guide holes corresponding to the plurality of needling needles. The needle cylinder is arranged in the cavity surrounded by the cover and the needling needle guide plate, and the outer wall of the needle cylinder is attached to the inner wall of the cover. One end of the needling needle is fixed in the needle cylinder, and the other end extends out of the needle cylinder and into the guide hole. One end of the driving spring is connected to the top of the needle cylinder, and the other end is a free end and extends out of the cover along the through hole. When the free end of the driving spring is not subjected to driving pressure, the outer wall of the needle cylinder and the inner wall of the cover are relatively fixed under the action of friction, and the needling needle does not extend out of the guide hole. When the free end of the driving spring is subjected to driving pressure, the needle cylinder slides along the cover, so that the needling needle moves and extends out of the guide hole. The protective cover is removably arranged on the top of the cover and covers the free end of the driving spring.

[0004] In some embodiments, the multi-head spring ear tip blood-letting needle comprises six needling needles arranged in two parallel rows, with three needling needles in each row arranged at equal intervals.

[0005] In some embodiments, the needling needle is a three-edged needle with a needle body diameter of 0.5 mm, and the distance between two adjacent needling needles is 1-2 mm.

[0006] In some embodiments, the multi-head spring ear tip blood-letting needle further comprises a spring cap covering and connected to the free end of the driving spring.

[0007] In some embodiments, the through hole is provided with a step, and the diameter of the spring cap is smaller than the maximum diameter of the step but larger than the minimum diameter of the step.

[0008] In some embodiments, when the spring cap is not subjected to driving pressure, the outer wall of the needle cylinder and the inner wall of the shell are kept relatively fixed under the action of friction, and the top surface of the spring cap is located outside the through hole; when the spring cap is subjected to driving pressure, the spring cap moves along the through hole and stops at the step, while the driving spring is compressed and drives the needle cylinder and the plurality of needle lancets to move synchronously, so that the plurality of needle lancets protrude out of the guide hole.

[0009] In some embodiments, the height of the shell is 25-35 mm, and when the spring cap stops at the step, the plurality of needle lancets protrude out of the guide hole by 3-5 mm.

[0010] In some embodiments, the needle lancet guide plate is detachably connected with the shell, and the bottom end surface of the shell and the outer side surface of the needle lancet guide plate are integrally curved towards the needle cylinder.

[0011] In some embodiments, in the same cross-sectional plane, the cross section of the inner wall of the shell and the cross section of the outer wall of the needle cylinder have the same polygonal profile.

[0012] In some embodiments, an outer side step is arranged on the top of the shell, and the protective cover is sleeved on the top of the shell and stops at the outer side step. BRIEF DESCRIPTION OF DRAWINGS

[0013] The embodiments exemplified herein are further described below with reference to the accompanying drawings, which are merely intended to enable those skilled in the art to better understand the present application, and are not intended to limit the scope of the present application.

[0014] Figure 1 A schematic exploded view of one half structure of the multi-head spring ear tip phlebotomy needle according to the embodiments of the present application after being vertically cut open is shown.

[0015] Figure 2 A structural schematic view of one half structure of the multi-head spring ear tip phlebotomy needle according to the embodiments of the present application after being vertically cut open in an unused state is shown.

[0016] Figure 3 A structural schematic view of one half structure of the multi-head spring ear tip phlebotomy needle according to the embodiments of the present application after being vertically cut open after use is shown.

[0017] Figure 4 An external structural schematic view of the needle cylinder according to the embodiments of the present application is shown.

[0018] Figure 5The appearance schematic diagram of the multi-head spring ear tip phlebotomy needle according to the embodiment of the utility model is shown.

[0019] Reference Signs:

[0020] 1 - pricking needle; 2 - needle cylinder; 3 - cover; 31 - through hole; 32 - step; 4 - pricking needle guide plate; 41 - guide hole; 5 - driving spring; 6 - protective cover; 7 - spring cap; 8 - outer step. DETAILED DESCRIPTION

[0021] In the following, the concept of the utility model will be further explained according to specific embodiments. However, the specific embodiments listed are only for illustrative purposes and are not intended to limit the scope of the utility model. A person skilled in the art will realize that specific features in any of the following embodiments can be used in any other embodiment as long as it does not deviate from the utility model concept described herein.

[0022] Reference Figures 1 to 5 As shown, the utility model provides a kind of multi-head spring ear tip phlebotomy needle, including multiple pricking needles 1, cover 3, needle cylinder 2, driving spring 5 and protective cover 6.

[0023] The top of cover 3 is equipped with through hole 31, and the bottom of cover 3 is fixed with pricking needle guide plate 4, and pricking needle guide plate 4 is equipped with multiple guide holes 41 corresponding to multiple pricking needles 1 respectively.For example, at least the number of guide holes 41 is equal to the number of pricking needles 1, and the position of guide hole 41 corresponds to the position of pricking needle 1.

[0024] Needle cylinder 2 is arranged in the cavity surrounded by cover 3 and pricking needle guide plate 4, and the outer wall of needle cylinder 2 is attached to the inner wall of cover 3, one end of pricking needle 1 is fixed in needle cylinder 2, and the other end extends out of needle cylinder 2 and extends into guide hole 41.

[0025] One end of driving spring 5 is connected (for example, welded) with the top of needle cylinder 2, and the other end is free end and extends out of cover 3 along through hole 31, when the free end of driving spring 5 is not driven by pressure, the outer wall of needle cylinder 2 and the inner wall of cover 3 are relatively fixed under the action of friction force and multiple pricking needles 1 do not extend out of guide hole 41, when the free end of driving spring 5 is driven by pressure, needle cylinder 2 slides along cover 3, so that multiple pricking needles 1 move and extend out of guide hole 41.

[0026] Protective cover 6 is removably arranged on the top of cover 3 and covers the free end of driving spring 5. Protective cover 6 can avoid misoperation of the free end of driving spring 5.

[0027] The multi-head spring ear tip phlebotomy needle provided by the utility model has simple overall structure, simple connection between components, is a special needle for ear tip phlebotomy, facilitates operation of a treating physician, and makes the operation safer and can effectively reduce the occurrence of adverse events.

[0028] In some embodiments, the multi-head spring ear tip phlebotomy needle provided by the utility model is disposable.

[0029] In some embodiments, when the free end of the driving spring 5 is not subjected to driving pressure, the frictional force between the outer wall of the needle cylinder 2 and the inner wall of the cover 3 is greater than the total weight of the needle cylinder 2, the plurality of needle puncture needles 1 and the driving spring 5. Therefore, before pressing the driving spring 5, the needle cylinder 2 can be kept fixed in the cover by means of the frictional force between the outer wall of the needle cylinder 2 and the inner wall of the cover 3, and is prevented from moving freely.

[0030] In some embodiments, the multi-head spring ear tip phlebotomy needle provided by the utility model comprises 6 needle puncture needles 1, and the 6 needle puncture needles 1 are arranged in two parallel rows.

[0031] In some embodiments, the needle puncture needle 1 is a three-edged needle, the needle body diameter is 0.5 mm, and the spacing between the two adjacent needle puncture needles 1 is 1-2 mm. For example, the 6 needle puncture needles 1 are arranged in two parallel rows (for example, the whole is in the shape of a rectangle), each row has three needle puncture needles 1 arranged at equal intervals, the needle body diameter of each three-edged needle 1 is 0.5 mm, the spacing between the two rows is 2 mm, and the spacing between the two adjacent needle puncture needles 1 in the same row is 2 mm.

[0032] In some embodiments, the multi-head spring ear tip phlebotomy needle provided by the utility model further comprises a spring cap 7, and the spring cap 7 covers and is connected to the free end of the driving spring 5. The spring cap 7 can facilitate the treating physician to press the free end of the driving spring 5.

[0033] In some embodiments, the friction between the outer wall of the needle cylinder 2 and the inner wall of the shell 3 is greater than the total weight of the needle cylinder 2, the plurality of needle pricking needles 1, the driving spring 5 and the spring cap 7 when the free end of the driving spring 5 is not subjected to driving pressure. Therefore, before pressing the driving spring 5, the needle cylinder 2 can be kept fixed in the shell by the friction between the outer wall of the needle cylinder 2 and the inner wall of the shell 3, preventing free movement.

[0034] In some embodiments, the through hole 31 is provided with a step 32, and the diameter of the spring cap 7 is smaller than the maximum diameter of the step 32 but greater than the minimum diameter of the step 32. The step 32 can stop the spring cap 7, thereby controlling the length of movement of the needle pricking needles 1.

[0035] In some embodiments, when the spring cap 7 is not subjected to driving pressure, the outer wall of the needle cylinder 2 and the inner wall of the shell 3 are relatively fixed by the friction, and the top surface of the spring cap 7 is located outside the through hole 31; when the spring cap 7 is subjected to driving pressure, the spring cap 7 moves along the through hole 31 and stops at the step 32, while the driving spring 5 is compressed and drives the needle cylinder 2 and the plurality of needle pricking needles 1 to move synchronously, so that the plurality of needle pricking needles 1 extend out of the guide holes 41. Through the linkage of the spring cap 7, the driving spring 5, the needle cylinder 2 and the needle pricking needles 1, when the spring cap 7 is pressed and stopped at the step, the plurality of needle pricking needles 1 just extend out of the guide holes 41 by the required length.

[0036] In some embodiments, as shown in Figure 3 , when the spring cap 7 stops at the step 32, the plurality of needle pricking needles 1 extend out of the guide holes 41 by 3-5 mm. For example, when the spring cap 7 stops at the step 32, the plurality of needle pricking needles 1 extend out of the guide holes 41 by 3 mm, i.e. from the perspective in Figure 3 , the lower end extending out of the guide holes 41 or the lower surface (i.e. the outer surface) of the needle pricking needle guide plate 4 extends out by 3 mm.

[0037] In some embodiments, the needle pricking needle guide plate 4 is detachably connected with the shell 3. For example, the needle pricking needle guide plate 4 can be directly clamped in the shell 3.

[0038] In some embodiments, the bottom end surface of the shell 3 and the outer surface of the needle pricking needle guide plate 4 are arc-shaped as a whole, bending towards the needle cylinder 2. Preferably, the curvature of the arc shape should be adapted to the shape of the ear tip, so that the bottom end surface of the shell 3 and the outer surface of the needle pricking needle guide plate 4 fit the position to be pricked on the ear tip as a whole, facilitating force bearing during pricking.

[0039] In some embodiments, in the same cross-sectional plane, the cross section of the inner wall of the shell 3 and the cross section of the outer wall of the needle cylinder 2 have the same polygonal profile. The polygonal profile of the cross section of the inner wall of the shell 3 and the inner wall of the needle cylinder 2 can prevent the needle cylinder 2 from rotating in the shell 3. For example, the polygonal profile can be a rectangular profile.

[0040] In some embodiments, the height of the housing 3 is 25-35 mm, for example 35 mm.

[0041] In some embodiments, the cross section of the housing 3 is rectangular, with the top dimension being 8 mm x 10 mm, the bottom dimension being 8 mm x 15 mm, and the height being 35 mm; the needle guide plate 4 has a square profile with a dimension of 6 mm x 6 mm.

[0042] In some embodiments, the needle 1 is welded inside the needle cylinder 2.

[0043] In some embodiments, the top outer side of the housing 3 is provided with an outer step 8, and the protective cover 6 is sleeved on the top of the housing 3 and stopped at the outer step 8. From the outside, only the protective cover 6 and a part of the housing 3 connected therewith can be seen, as shown in Figure 5 .

[0044] In some embodiments, the multi-head spring ear tip phlebotomy needle of the present application is made of plastic.

[0045] In some embodiments, the multi-head spring ear tip phlebotomy needle of the present application further comprises a sealed packaging bag, each multi-head spring ear tip phlebotomy needle can be independently packaged, and all the components mentioned above can be packaged in the sealed packaging bag after being connected and assembled, so as to ensure the sterile state of the needle 1 before use.

[0046] Although the embodiments described herein are described with reference to specific examples, it should be understood that those skilled in the art can make various adjustments and changes to them without departing from the scope and spirit of the present application.

Claims

1. Multi-coil spring ear tip phlebotomy needle, characterized in that, The utility model relates to a needle stick device, comprising: a plurality of needle sticks (1); a cover (3) having a through hole (31) at the top and a needle stick guide plate (4) fixed at the bottom, the needle stick guide plate (4) having a plurality of guide holes (41) corresponding to the plurality of needle sticks (1) respectively; a needle cylinder (2) arranged in the cavity formed by the cover (3) and the needle stick guide plate (4), the outer wall of the needle cylinder (2) being in contact with the inner wall of the cover (3), one end of the needle stick (1) being fixed in the needle cylinder (2) and the other end extending out of the needle cylinder (2) and into the guide hole (41); a drive spring (5) having one end connected to the top of the needle cylinder (2) and the other end being a free end extending out of the cover (3) along the through hole (31), when the free end of the drive spring (5) is not subjected to driving pressure, the outer wall of the needle cylinder (2) and the inner wall of the cover (3) are relatively fixed due to friction, and the needle stick (1) does not extend out of the guide hole (41), when the free end of the drive spring (5) is subjected to driving pressure, the needle cylinder (2) slides along the cover (3), so that the needle stick (1) moves to extend out of the guide hole (41); and a protective cover (6) removably arranged on the top of the cover (3) and covering the free end of the drive spring (5).

2. The multi-coil spring ear-prick lancet of claim 1, wherein, The utility model comprises 6 needle sticks (1) arranged in two parallel rows, each row having three needle sticks (1) arranged at equal intervals.

3. The multi-coil spring ear-prick lancet according to claim 1 or 2, characterized in that, The needle stick (1) is a triangular needle with a needle body diameter of 0.5 mm, and the distance between two adjacent needle sticks (1) is 1-2 mm.

4. The multi-coil spring ear-prick phlebotomy needle of claim 1, wherein, The utility model further comprises a spring cap (7) covering and connected to the free end of the drive spring (5).

5. The multi-coil spring ear-prick phlebotomy needle of claim 4, wherein, The through hole (31) is provided with a step (32), the diameter of the spring cap (7) is smaller than the maximum diameter of the step (32) but larger than the minimum diameter of the step (32).

6. The multi-coil spring ear-prick phlebotomy needle of claim 5, wherein, When the spring cap (7) is not subjected to driving pressure, the outer wall of the needle cylinder (2) and the inner wall of the cover (3) are relatively fixed due to friction, and the top surface of the spring cap (7) is located outside the through hole (31); when the spring cap (7) is subjected to driving pressure, the spring cap (7) moves along the through hole (31) and stops at the step (32), at the same time, the drive spring (5) is compressed and drives the needle cylinder (2) and the needle stick (1) to move synchronously, so that the plurality of needle sticks (1) extend out of the guide hole (41).

7. The multi-coil spring ear-prick phlebotomy needle of claim 6, wherein, The height of the cover (3) is 25-35 mm, and when the spring cap (7) stops at the step (32), the plurality of needle sticks (1) extend out of the guide hole (41) by 3-5 mm.

8. The multi-coil spring ear-prick phlebotomy needle of claim 6, wherein, The needle guide plate (4) is detachably connected with the cover (3), and the bottom end surface of the cover (3) and the outer surface of the needle guide plate (4) are integrally curved in an arc shape towards the needle cylinder (2).

9. The multi-coil spring ear-prick blood-letting needle according to claim 1, characterized in that, In the same cross section, the cross section of the inner wall of the cover (3) and the cross section of the outer wall of the needle cylinder (2) have the same polygonal profile.

10. The multi-coil spring ear-prick phlebotomy needle of claim 9, wherein, The top outer side of the cover (3) is provided with an outer side step (8), and the protective cover (6) is sleeved on the top of the cover (3) and stopped at the outer side step (8).

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