CN215309200U - Needle assembly and injection handpiece - Google Patents

Abstract

The utility model discloses a needle assembly, comprising: the outer side surface of the upper cover is hinged with a rebounding claw; the lower cover is connected with the upper cover, the upper cover and the lower cover jointly form a shell with an accommodating cavity, a partition plate is arranged in the lower cover, a plurality of needle outlets are formed in the partition plate, and through holes for the clamping jaws to penetrate through are formed in the side face of the lower cover; the needle outlet module comprises a connecting part, a main body part and a needle outlet part which are sequentially arranged from top to bottom, the main body part is positioned in the accommodating cavity, the connecting part extends upwards to the outside of the upper cover, the needle outlet part comprises a plurality of needle heads, and the needle heads and the needle outlet holes are arranged in a one-to-one correspondence manner; the outer side surface of the main body part is provided with a clamping tooth section which is arranged up and down, the clamping jaw is clamped in the clamping tooth section from top to bottom, and the clamping jaw is elastically avoided in the clamping tooth section from bottom to top. Compared with the prior art, the utility model can control the needle outlet length of the needle head in a segmented manner, thereby establishing a uniform needle inserting depth standard. Meanwhile, the utility model also provides an injection hand tool applying the needle head assembly.

Description

Needle assembly and injection handpiece

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a needle assembly and an injection hand tool.

Background

In the medical industry, especially for the beauty medical industry, injection is one of the conventional treatment means, and the liquid medicine is injected under the skin through an injection needle to obtain the corresponding beauty effect. For different individuals, the depth of the epidermis layer is different, some people are thin, some people are thick, and the therapist usually performs acupuncture according to personal experience, so that the unified acupuncture depth standard is lacked.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a needle assembly that solves one or more of the problems set forth in the prior art, and provides at least one useful alternative or creation.

A needle assembly according to an embodiment of the first aspect of the utility model, comprising:

the outer side surface of the upper cover is hinged with a rebounding claw;

the lower cover is connected with the upper cover, the upper cover and the lower cover jointly form a shell with an accommodating cavity, a horizontally arranged partition plate is arranged in the lower cover, a plurality of needle outlets are formed in the partition plate, and through holes for the clamping jaws to pass through are formed in the side surface of the lower cover, so that the clamping jaws can extend into the accommodating cavity;

the needle outlet module comprises a connecting part, a main body part and a needle outlet part which are sequentially arranged from top to bottom, the connecting part, the main body part and the needle outlet part are respectively provided with a liquid outlet channel which is communicated with each other, the main body part is positioned in the accommodating cavity, the connecting part upwards extends out of the upper cover, the needle outlet part comprises a plurality of needle heads, and the needle heads and the needle outlet holes are arranged in a one-to-one correspondence manner; the clamping tooth section that sets up from top to bottom is equipped with on the lateral surface of main part, the clamping tooth section is equipped with a plurality of latches, the jack catch from last down the joint in the clamping tooth section, the jack catch from down up elasticity dodge in the clamping tooth section. It should be noted that the structure of the claw and the latch section is similar to a ratchet structure of a ratchet wheel, so as to realize the unidirectional clamping of the claw and the latch section.

The needle assembly provided by the embodiment of the utility model has at least the following beneficial effects: the clamping jaw elastically avoids the clamping tooth section from bottom to top, so that the needle head can be gradually exposed out of the shell along with the gradual upward movement of the shell, the clamping jaw can be kept in abutting joint with the clamping tooth section under the action of resilience force to maintain the one-way clamping relation between the clamping jaw and the clamping tooth section, and the exposed state of the needle head is locked; accomodate the in-process of syringe needle, need to apply the external force that is enough to overcome the resilience force to the jack catch to impel the jack catch to rotate and make it with the latch section separates, thereby can move down the shell, make the syringe needle can be wrapped up by the shell, when removing the external force to the jack catch after, the jack catch under the effect of resilience force again with the latch section carries out the butt. Compared with the prior art, the utility model can control the needle outlet length of the needle head in a segmented manner, thereby establishing a uniform needle inserting depth standard, effectively improving the beauty effect and reducing the risk of medical accidents.

According to some embodiments of the present invention, in order to avoid the misalignment between the claw and the tooth section, the main body is disposed in the inner cavity of the lower cover in a rotation-stopping manner, so that the main body and the lower cover cannot rotate relatively.

According to some embodiments of the utility model, in order to enable the one-way clamping relationship between the clamping jaws and the clamping tooth section to be firmer, the number of the clamping jaws is two, and the two clamping jaws are linearly arranged; the number of the clamping tooth sections is two, and the two clamping tooth sections are respectively arranged in one-to-one correspondence with the two clamping jaws.

According to some embodiments of the utility model, a rotating frame is arranged on the outer side surface of the upper cover, the rotating frame is provided with a pin hole, a pin column which is connected with the pin hole in a matching manner is arranged in the middle of the clamping jaw, the central axis of the pin column is horizontally arranged, so that the clamping jaw can be hinged to the upper cover up and down, and a user can press the upper part of the clamping jaw inwards to separate the clamping jaw from the clamping tooth section.

According to some embodiments of the utility model, a torsion spring is sleeved outside the pin column, the torsion spring is respectively abutted against the upper cover and the clamping jaw, and the torsion spring is used for providing resilience for the clamping jaw.

According to some embodiments of the utility model, the lower part of each latch is provided with an avoiding inclined surface which is inclined upwards from inside to outside, and the jaw is provided with an upper inclined surface matched with the avoiding inclined surface; every the upper portion of latch all is equipped with the joint plane, the jack catch be equipped with the joint plane matches the lower plane of use, go up the inclined plane and be located the top on lower plane. Due to the arrangement, the clamping jaw can be elastically avoided from bottom to top in the clamping tooth section, and can be clamped in the clamping tooth section from top to bottom.

According to some embodiments of the utility model, each of the needle outlets is provided with a protective sleeve extending downwards; the needle outlet part further comprises a plurality of needle sleeves, all the needle sleeves are arranged on the lower bottom surface of the main body part, each needle sleeve is connected with one needle, and the needle sleeves and the protective sleeves are arranged in a one-to-one correspondence mode. When the syringe needle is not out of the needle, this moment the syringe needle quilt protective sheath parcel to the factor of safety of promotion syringe needle subassembly, the location to the syringe needle can be promoted in the setting of needle cover and protective sheath.

According to some embodiments of the present invention, the number of the needle outlets and the number of the needles are nine, and all the needle outlets and all the needles are distributed in a matrix. The setting of nine needles can show the injection efficiency that promotes.

According to some embodiments of the utility model, the partition divides an inner cavity of the lower cover into an upper cavity and a lower cavity, the lower cover is connected with a negative pressure pipe, and the negative pressure pipe is communicated with the lower cavity. When in injection, the skin of an individual can be adsorbed to the lower cover under the action of the negative pressure tube so as to solve the technical problem of inconvenient injection due to the elasticity of the skin.

An injection handpiece in accordance with an embodiment of the second aspect of the utility model comprises a syringe connected to the needle assembly, a pushing means for pushing a plunger of the syringe, and the needle assembly described above.

The injection hand tool provided by the embodiment of the utility model has at least the following beneficial effects: the injection hand tool adopting the needle head assembly can control the needle outlet length of the needle head in a segmented manner, so that a uniform needle inserting depth standard is established, the beauty effect is effectively improved, and the risk of medical accidents is reduced.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a perspective view of a needle assembly according to an embodiment of the present invention;

FIG. 2 is a top plan view of the needle assembly shown in FIG. 1;

FIG. 3 is a perspective view of the needle assembly of FIG. 1;

FIG. 4 is a front elevational view of the needle assembly of FIG. 3;

FIG. 5 is an exploded view of the needle assembly shown in FIG. 3;

FIG. 6 is a cross-sectional view of the needle assembly of FIG. 2 taken along line A-A;

fig. 7 is a schematic perspective view of an injection handpiece according to an embodiment of the present invention.

In the drawings: 101-shell, 300-needle outlet module, 102-containing cavity, 100-upper cover, 200-lower cover, 110-first through hole, 400-claw, 120-rotating frame, 410-pin column, 420-torsion spring, 210-clapboard, 211-needle outlet hole, 212-protective sleeve, 220-through hole, 310-connecting part, 320-main body part and 330-needle outlet part, 301-liquid outlet channel, 331-needle sleeve, 332-needle, 321-latch section, 322-latch, 3221-avoidance inclined plane, 430-upper inclined plane, 3222-latch plane, 440-lower plane, 230-chute, 323-slide edge, 500-negative pressure tube, 10-needle assembly, 20-syringe, 30-pushing device and 21-piston.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

As shown in fig. 1 and 2, the needle assembly 10 according to the first aspect of the present invention includes a housing 101 and a needle discharging module 300, wherein a receiving cavity 102 is formed in the housing 101, the needle discharging module 300 is installed in the receiving cavity 102, and in order to facilitate installation of the needle discharging module 300, the housing 101 is formed by connecting an upper cover 100 and a lower cover 200, which are detachably connected. Wherein, the last top surface of upper cover 100 is equipped with first through-hole 110, the lower bottom surface of upper cover 100 is uncovered, it has two jack catchs 400 that can kick-back to articulate on the lateral surface of upper cover 100, two jack catchs 400 are the straight line and arrange, two jack catchs 400 can rotate from top to bottom, and two the lower part of jack catchs 400 all extends to lower cover 200. Specifically, two rotating frames 120 are arranged on the outer side surface of the upper cover 100, the two rotating frames 120 are arranged in a straight line, each rotating frame 120 is provided with a pin hole, a pin 410 which is connected with the pin hole in a matching manner is arranged in the middle of the clamping jaw 400, the central axis of the pin 410 is horizontally arranged, so that the clamping jaw 400 can be hinged to the upper cover 100 up and down, and a user can rotate the lower part of the clamping jaw 400 outwards by pressing the upper part of the clamping jaw 400 inwards; the outside cover of round pin post 410 is equipped with torsional spring 420, torsional spring 420 respectively with upper cover 100 with the jack catch 400 carries out the butt, torsional spring 420 is used for jack catch 400 provides the resilience force, makes the lower part of jack catch 400 can maintain inward rotation's state.

As shown in fig. 3 to 6, the upper top surface and the lower bottom surface of lower cover 200 are both uncovered, and the inner chamber of lower cover 200 is equipped with the baffle 210 that the level set up, baffle 210 divides the inner chamber of lower cover 200 into upper chamber and cavity of resorption, baffle 210 is equipped with nine and goes out pinhole 211, nine go out pinhole 211 matrix distribution, every go out pinhole 211 all is equipped with downwardly extending's protective sheath 212, every protective sheath 212 does not all exceed in lower cover 200. Meanwhile, the side surface of the lower cover 200 is provided with a through hole 220 for the lower part of the jaw 400 to pass through, so that the lower part of the jaw 400 can extend into the accommodating cavity 102, and the lower part of the jaw 400 can keep an extending state under the elastic force of the torsion spring 420.

The needle outlet module 300 comprises a connecting part 310, a main body part 320 and a needle outlet part 330 which are sequentially arranged from top to bottom, the connecting part 310, the main body part 320 and the needle outlet part 330 can be integrally formed or connected in a split mode, the connecting part 310, the main body part 320 and the needle outlet part 330 are respectively provided with a liquid outlet channel 301 which can be communicated with each other, the main body part 320 is located in the accommodating cavity 102, and the connecting part 310 penetrates through the first through hole 110 of the upper cover 100 and upwards extends to the outside of the upper cover 100. Go out needle portion 330 including nine needle cover 331, nine the lower bottom surface of main part 320 is all located to needle cover 331, every needle cover 331 all is connected with a syringe needle 332, all syringe needles 332 all downwardly extending, syringe needle 332 with go out pinhole 211 one-to-one setting, just needle cover 331 also with protective sheath 212 one-to-one sets up, makes every syringe needle 332 all can pass the play pinhole 211 that corresponds and extend to the protective sheath 212 that corresponds in, when the needle 332 does not go out the needle, this moment syringe needle 332 quilt protective sheath 212 wraps up to promote the factor of safety of syringe needle subassembly 10. In order to enhance the positioning of the needle 332, both the needle sheath 331 and the protective sheath 212 may be selected to be reverse tapered, so that even if the needle 332 slightly deviates from the corresponding needle outlet hole 211, the needle sheath 331 can smoothly extend into the protective sheath 212, so that the needle 332 can extend out of the protective sheath 212. Although the nine needles are provided to significantly improve the injection efficiency, in other embodiments, the number of the needle heads 332 and the needle outlet holes 211 may be one, two, four, six, etc., without being limited thereto.

In addition, two latch sections 321 arranged up and down are arranged on the outer side surface of the main body part 320, the latch sections 321 are arranged in one-to-one correspondence with the latches 400, each latch section 321 is provided with a plurality of latches 322, the lower part of each latch 322 is provided with an avoiding inclined surface 3221, the avoiding inclined surface 3221 is inclined upwards from inside to outside, and the lower part of each latch 400 is provided with an upper inclined surface 430 matched with the avoiding inclined surface 3221; each upper portion of latch 322 all is equipped with joint plane 3222, jack catch 400 be equipped with joint plane 3222 matches the lower plane 440 that uses, go up inclined plane 430 and be located the top of lower plane 440. Such setting makes jack catch 400 can be followed up elasticity dodge from down in bayonet tooth section 321 to can follow down the joint in bayonet tooth section 321, promptly jack catch 400 can be followed bayonet tooth section 321 carries out the rebound, nevertheless jack catch 400 can not be followed bayonet tooth section 321 carries out the rebound to realize the one-way joint of jack catch 400 and bayonet tooth section 321. It is understood that the present invention is not limited to the number of the jaws 400, and the number of the jaws 400 may be one, three, etc., without being limited thereto.

With the above structure, the latch 400 elastically retreats from bottom to top from the latch section 321, so as to gradually expose the needle 332 to the housing 101 as the housing 101 gradually moves upwards, the latch 400 can keep abutting against the latch section 321 under the action of a resilient force to maintain a one-way snap-fit relationship between the latch 400 and the latch section 321, thereby locking the exposed state of the needle 332, and since the latch section 321 is provided with a plurality of latches 322, each latch 322 corresponds to a different needle-out length, the present invention can control the needle-out length of the needle 332 in a segmented manner. During the process of receiving the needle 332, an external force sufficient to overcome the resilience force needs to be applied to the upper portion of the latch 400 to cause the lower portion of the latch 400 to rotate outwards and separate from the latch section 321, so as to move the housing 101 downwards, so that the needle 332 can be wrapped by the housing 101, and when the external force applied to the latch 400 is removed, the latch 400 is again abutted to the latch section 321 under the resilience force.

As shown in fig. 5, in some embodiments of the present invention, in order to avoid the misalignment between the latch 400 and the latch segment 321, the main body 320 is disposed in the inner cavity of the lower cap 200 in a rotation-stop manner, so that the main body 320 and the lower cap 200 cannot rotate relatively. Specifically, the inner side surface of the lower cover 200 is provided with a slide groove 230 vertically disposed, and the outer side surface of the main body 320 is provided with a slide rib 323 which slides in the slide groove 230. It is understood that the sliding groove 230 may be disposed on an inner side surface of the upper cover 100, but is not limited thereto. In addition, the main body 320 and the lower cover 200 may also adopt a square body and square cavity structure to achieve the rotation stopping effect.

As shown in fig. 5 and 6, in some embodiments of the present invention, a negative pressure pipe 500 is connected to the lower cover 200, the negative pressure pipe 500 is used to connect a vacuum pump (not shown in the drawings), and the negative pressure pipe 500 is communicated with a lower cavity of the lower cover 200. When injecting, the individual's skin can be absorbed on the lower cover 200 under the action of the negative pressure tube 500, so as to solve the technical problem of inconvenient injection due to the elasticity of the skin.

As shown in fig. 7, the injection hand tool according to the second aspect embodiment of the present invention includes the needle assembly 10 according to the first aspect embodiment of the present invention, and further includes a syringe 20 and a pushing device 30, the syringe 20 is connected to the connecting portion 310 of the needle assembly 10, so that the inner cavity of the syringe 20 can communicate with the liquid outlet channel 301 of the needle outlet module 300, and the pushing device 30 is specifically a screw slider mechanism, and is configured to push the piston 21 of the syringe 20, so that the liquid medicine in the syringe 20 can be pushed to the needle outlet module 300 and finally flows out from the needle 332. Since the injection handpiece adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and detailed description is omitted.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A needle assembly, comprising:

an upper cover (100) with a rebounding claw (400) hinged on the outer side surface;

the lower cover (200) is connected with the upper cover (100), the upper cover (100) and the lower cover (200) jointly form a shell (101) with a containing cavity (102), a horizontally arranged partition plate (210) is arranged in the lower cover (200), a plurality of needle outlet holes (211) are formed in the partition plate (210), and through holes (220) for the clamping jaws (400) to pass through are formed in the side surface of the lower cover (200), so that the clamping jaws (400) can extend into the containing cavity (102);

the needle outlet module (300) comprises a connecting part (310), a main body part (320) and a needle outlet part (330) which are sequentially arranged from top to bottom, the connecting part (310), the main body part (320) and the needle outlet part (330) are respectively provided with a liquid outlet channel (301) which are communicated with each other, the main body part (320) is positioned in the accommodating cavity (102), the connecting part (310) upwards extends out of the upper cover (100), the needle outlet part (330) comprises a plurality of needle heads (332), and the needle heads (332) and the needle outlet holes (211) are arranged in a one-to-one correspondence manner; be equipped with latch section (321) that set up from top to bottom on the lateral surface of main part (320), latch section (321) are equipped with a plurality of latches (322), jack catch (400) from last down the joint in latch section (321), jack catch (400) from down up elasticity dodge in latch section (321).

2. The needle assembly of claim 1, wherein: the main body part (320) is arranged in an inner cavity of the lower cover (200) in a rotation stopping manner, so that the main body part (320) and the lower cover (200) cannot rotate relatively.

3. The needle assembly of claim 1, wherein: the number of the clamping jaws (400) is two, and the two clamping jaws (400) are linearly arranged; the number of the clamping tooth sections (321) is two, and the two clamping tooth sections (321) are respectively arranged corresponding to the two clamping claws (400) one by one.

4. The needle assembly of claim 1, wherein: be equipped with rotating turret (120) on the lateral surface of upper cover (100), rotating turret (120) are equipped with the pinhole, the middle part of jack catch (400) be equipped with pinhole accordant connection's round pin post (410), the central axis level setting of round pin post (410).

5. The needle assembly of claim 4, wherein: the outside cover of round pin post (410) is equipped with torsional spring (420), torsional spring (420) respectively with upper cover (100) with jack catch (400) carry out the butt.

6. The needle assembly of claim 1, wherein: an avoiding inclined surface (3221) is arranged at the lower part of each clamping tooth (322), the avoiding inclined surface (3221) is arranged in an upward inclined manner from inside to outside, and the clamping jaw (400) is provided with an upper inclined surface (430) matched with the avoiding inclined surface (3221) for use; every the upper portion of latch (322) all is equipped with joint plane (3222), jack catch (400) be equipped with joint plane (3222) match lower plane (440) of using, go up inclined plane (430) and be located the top of lower plane (440).

7. The needle assembly of claim 1, wherein: each pin outlet hole (211) is provided with a protective sleeve (212) extending downwards; the needle outlet portion (330) further comprises a plurality of needle sleeves (331), all the needle sleeves (331) are arranged on the lower bottom surface of the main body portion (320), each needle sleeve (331) is connected with one needle (332), and the needle sleeves (331) and the protective sleeves (212) are arranged in a one-to-one correspondence mode.

8. The needle assembly of claim 1 or 7, wherein: the number of the needle outlets (211) and the number of the needles (332) are nine, and all the needle outlets (211) and all the needles (332) are distributed in a matrix.

9. The needle assembly of claim 1, wherein: the inner cavity of lower cover (200) is divided into epicoele and cavity down by baffle (210), lower cover (200) is connected with negative pressure pipe (500), negative pressure pipe (500) with the cavity down intercommunication.

10. An injection handpiece, comprising a needle assembly according to any one of claims 1 to 9, and further comprising: a syringe (20) and a pushing device (30), the syringe (20) being connected to the needle assembly (10), the pushing device (30) being adapted to push a piston (21) of the syringe (20).

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