CN215875958U - Micro-needle - Google Patents

Abstract

The utility model relates to a microneedle, which has the technical scheme that: the needle seat fixing device comprises a needle seat for fixing a needle body, a moving rod for driving the needle seat to axially move, a clamping block for driving the moving rod to axially move, a first cover ring and a second cover ring; the first cover ring and the second cover ring are sleeved on the moving rod, and the top end of the first cover ring is clamped with the second cover ring to form a spiral channel; the clamping block is fixedly connected with the moving rod and is abutted against the inner wall of the spiral channel; one end of the movable rod is used for connecting an injection gun; an injection input channel is arranged on the movable rod along the axial direction of the movable rod; one end of the injection input channel is communicated with the output end of the injection gun; the needle seat is inserted at the other end of the injection input channel; the other end of the injection input channel is used for being communicated with the needle body; the other end of the movable rod is sleeved with a needle sleeve for protecting the needle body; the top end of the needle sleeve is rotatably connected with the bottom end of the first cover ring; this application has the effect that can adjust the needle body and pierce the degree of depth of skin.

Description

Micro-needle

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a microneedle.

Background

At present, the micro-needle is used for injecting hyaluronic acid, collagen and other injection lost by human body due to aging into the dermis layer of the skin by using the needle body, and can stimulate the regeneration, recombination and repair of collagen and fiber cells in the dermis layer, so that the skin becomes moist and glossy, the skin aging is effectively delayed, and the skin quality is improved.

In the case of injection using a microneedle, it is necessary to control the depth of penetration of a needle body into the skin, but it is difficult to adjust the depth of penetration of a needle body into the skin using a conventional microneedle, and thus it is necessary to develop a microneedle capable of adjusting the depth of penetration of a needle body into the skin.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a microneedle which has the functional advantage of being capable of adjusting the depth of a needle body penetrating into skin.

The technical purpose of the utility model is realized by the following technical scheme:

a microneedle, comprising: the needle seat is used for fixing a needle body, the moving rod is used for driving the needle seat to axially move, and the clamping block, the first cover ring and the second cover ring are used for driving the moving rod to axially move; the first cover ring and the second cover ring are sleeved on the moving rod, and the top end of the first cover ring is clamped with the second cover ring to form a spiral channel; the clamping block is fixedly connected with the moving rod and is abutted against the inner wall of the spiral channel; one end of the movable rod is used for connecting an injection gun; an injection input channel is arranged on the movable rod along the axial direction of the movable rod; one end of the injection input channel is communicated with the output end of the injection gun; the needle seat is inserted at the other end of the injection input channel; the other end of the injection input channel is used for being communicated with a needle body; the other end of the moving rod is sleeved with a needle sleeve for protecting a needle body; the top end of the needle sleeve is rotatably connected with the bottom end of the first cover ring.

Optionally, the top end of the needle sleeve is provided with a raised part; the bottom end of the first cover ring is provided with an adjusting block; the adjusting block can be abutted with the heightening part; the heightening part is provided with a plurality of adjusting grooves which are matched with the adjusting blocks to control the rotation angle of the first cover ring.

Optionally, an annular groove is formed at the top end of the needle sleeve; the bottom of the first cover ring is provided with a plurality of first clamping blocks; the first clamping block is clamped with the annular groove.

Optionally, a plurality of second fixture blocks are arranged at the top end of the first cover ring; and the second cover ring is provided with a plurality of clamping grooves which are correspondingly clamped with the second clamping blocks one to one.

Optionally, the moving rod includes: a rod portion and a receiving portion; one end of the rod part is used for being connected with the injection gun, and the other end of the rod part is fixedly connected with the accommodating part; the needle seat is sleeved on the accommodating part; the first cover ring and the second cover ring are sleeved on the rod part; the clamping block is fixedly connected with the side wall of the rod part; the rod part is provided with a first channel which is used for being communicated with the injection gun; the accommodating part is provided with a second channel communicated with the needle body; the first channel and the second channel are communicated to form the injection input channel; the needle seat is inserted in the second channel.

Optionally, a first through hole adapted to the clamping block is formed in the inner ring of the second cover ring; the first through hole is communicated with the spiral channel; the clamping block penetrates through the first through hole and then abuts against the spiral channel.

Optionally, the needle guard is provided with a partition plate for dividing the interior of the needle guard into a first cavity and a second cavity; the partition plate is provided with a sleeve which is sleeved on the needle body; one end of the sleeve is communicated with the first cavity, and the other end of the sleeve is communicated with the second cavity; the other end of the movable rod is inserted into the first cavity.

Optionally, a vacuum tube port is arranged on the needle sleeve; the vacuum pipe orifice is communicated with the second cavity.

Optionally, the method further includes: the sealing cover is used for sealing the bottom end of the needle sleeve; the sealing cover is inserted with the bottom end of the needle sleeve.

In conclusion, the utility model has the following beneficial effects: can adjust the needle body and pierce the degree of depth of skin, through the setting of regulating block and adjustment tank, the turned angle of the first lid ring of accurate control of being convenient for reaches the distance that accurate control carriage release lever, needle file and needle body reciprocated according to the turned angle of the first lid ring of accurate control, and then can the accurate control needle body pierce the degree of depth of skin.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a cross-sectional view of the present invention after assembly;

FIG. 3 is a bottom view of the first cover ring of the present invention;

FIG. 4 is a top view of a second cover ring of the present invention;

FIG. 5 is a bottom view of the present invention with the first and second cover rings snapped together;

fig. 6 is a sectional view taken along line a-a of fig. 5.

In the figure: 1. a needle seat; 2. a travel bar; 21. a rod portion; 22. a containing part; 3. a clamping block; 4. a needle sleeve; 41. a raised portion; 42. an adjustment groove; 43. an annular groove; 44. a partition plate; 45. a sleeve; 46. a vacuum tube orifice; 5. a first cover ring; 51. an adjusting block; 52. a first clamping block; 53. a second fixture block; 54. a first rib; 55. a second convex strip; 6. a second cover ring; 61. a card slot; 62. a first through hole; 63. a third rib; 64. a fourth rib; 7. a spiral channel; 8. an injection input channel; 9. and (7) sealing the cover.

Detailed Description

In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the utility model are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, configuration, and operation, and therefore should not be construed as limiting the present invention.

The utility model is described in detail below with reference to the figures and examples.

The present invention provides a microneedle, as shown in fig. 1 and 2, comprising: the needle holder comprises a needle seat 1 for fixing a needle body, a moving rod 2 for driving the needle seat 1 to axially move, a clamping block 3 for driving the moving rod 2 to axially move, a first cover ring 5 and a second cover ring 6; the first cover ring 5 and the second cover ring 6 are sleeved on the moving rod 2, and the top end of the first cover ring 5 is clamped with the second cover ring 6 to form a spiral channel 7; the clamping block 3 is fixedly connected with the moving rod 2, and the clamping block 3 is abutted against the inner wall of the spiral channel 7; one end of the movable rod 2 is used for connecting an injection gun; an injection input channel 8 is formed in the moving rod 2 along the axial direction of the moving rod; one end of the injection input channel 8 is communicated with the output end of the injection gun; the needle seat 1 is inserted at the other end of the injection input channel 8; the other end of the injection input channel 8 is used for being communicated with a needle body; the other end of the moving rod 2 is sleeved with a needle sleeve 4 for protecting a needle body; the top end of the needle sleeve 4 is rotatably connected with the bottom end of the first cover ring 5.

In the application, the needle base 1 is provided with nine through holes, the number of the through holes can be increased or reduced according to actual conditions in other embodiments, the through holes are used for inserting needle bodies, the needle bodies are injection needles, injection liquid is injected from the injection input channel 8 through an injection gun, then enters the through holes, and then is injected into skin through the needle bodies; in actual operation, rotate first lid ring 5, it rotates to drive second lid ring 6, thereby drive helical channel 7 and rotate, because joint piece 3 and helical channel 7's butt, under the 7 pivoted circumstances of helical channel, it does not take place to rotate to keep carriage release lever 2, just also keep joint piece 3 not to take place to rotate, helical channel 7 that first lid ring 5 and second lid ring 6 formed can drive joint piece 3 and reciprocate, joint piece 3 drives carriage release lever 2 and reciprocates, thereby drive needle file 1 and needle body and reciprocate, reach the regulation of piercing the skin degree of depth to the needle body.

Specifically, as shown in fig. 3 and 4, a first protruding strip 54 and a second protruding strip 55 are provided on a surface of the first cover ring 5 opposite to the second cover ring 6, and a third protruding strip 63 and a fourth protruding strip 64 are provided on a surface of the second cover ring 6 opposite to the first cover ring 5; the first convex strip 54, the second convex strip 55, the third convex strip 63 and the fourth convex strip 64 are all arc-shaped convex strips; in a case where the first cover ring 5 is viewed from below, the thickness of the first ribs 54 gradually decreases in the clockwise direction, and the thickness of the second ribs 55 gradually increases in the clockwise direction; in a case where the second cover ring 6 is viewed in plan, the thickness of the third ribs 63 gradually increases in the clockwise direction, and the thickness of the fourth ribs 64 gradually decreases in the clockwise direction; under the condition that the first cover ring 5 and the second cover ring 6 are clamped, the first convex strip 54 is opposite to the third convex strip 63, and the second convex strip 55 is opposite to the fourth convex strip 64 to form the spiral channel 7; the quantity of joint piece 3 is two in this application, and two joint pieces 3 set up relatively, and the top and the first sand grip 54 butt of one of them joint piece 3, the bottom and the third sand grip 63 butt of this joint piece 3, the top and the second sand grip 55 butt of another joint piece 3, the bottom and the fourth sand grip 64 butt of this joint piece 3.

Further, as shown in fig. 1 and 2, the top end of the needle sheath 4 is provided with a raised portion 41; the bottom end of the first cover ring 5 is provided with an adjusting block 51; the adjusting block 51 can be abutted with the heightening part 41; the raised portion 41 is provided with a plurality of adjusting grooves 42 which are matched with the adjusting blocks 51 to control the rotation angle of the first cover ring 5.

Specifically, a gap is left between the inner wall of the bottom end of the first cover ring 5 and the outer wall of the heightened part 41, and the adjusting block 51 is positioned in the gap; in the application, a plurality of adjusting grooves 42 are equidistantly arranged on the heightening part 41, in an initial state, an adjusting block 51 is opposite to any adjusting groove 42 in the plurality of adjusting grooves 42, then the first cover ring 5 is rotated to keep the moving rod 2 and the needle sleeve 4 from rotating, the adjusting block 51 rotates along with the first cover ring 5, then the adjusting block 51 rotates to be opposite to the next adjusting groove 42, in the process, the adjusting block 51 is in a butt joint state with the heightening part 41, after the adjusting block 51 rotates to be opposite to the next adjusting groove 42, the adjusting block 51 is not in a butt joint state with the heightening part 41, so that the first cover ring 5 and the needle sleeve 4 are connected more loosely than the adjusting block 51 and the heightening part 41 are in the butt joint state, the adjusting block 51 can rotate from being opposite to another adjusting groove 42 from being opposite to the adjusting groove 42 by sensing the tightness change between the first cover ring 5 and the needle sleeve 4, and the rotation angle of the first cover ring 5 can be accurately controlled, the distance of reciprocating of accurate control carriage release lever 2, that is the distance that accurate control needle file 1 and needle body reciprocated is reached according to the turned angle of the first cover ring 5 of accurate control, and then can the accurate control needle body pierce the degree of depth of skin.

Further, as shown in fig. 1 and 2, an annular groove 43 is formed at the top end of the needle sheath 4; a plurality of first fixture blocks 52 are arranged at the bottom of the first cover ring 5; the first latch 52 is latched with the annular groove 43.

Through the setting of ring channel 43, behind first fixture block 52 ring channel 43 joint, can prevent to produce axial displacement between first cover ring 5 and the needle cover 4, and make and to produce between first cover ring 5 and the first needle cover 4 and rotate, do not influence the rotation of first cover ring 5 and needle cover 4 when having guaranteed the stability of being connected of first cover ring 5 and needle cover 4.

Further, as shown in fig. 5, a plurality of second locking blocks 53 are arranged at the top end of the first cover ring 5; and a plurality of clamping grooves 61 which are correspondingly clamped with the second clamping blocks 53 one by one are formed in the second cover ring 6. Through the joint of second fixture block 53 and draw-in groove 61, realized the joint of first cover ring 5 and second cover ring 6, can prevent to produce between first cover ring 5 and the second cover ring 6 and remove or rotate.

Further, as shown in fig. 2, the moving bar 2 includes: a rod portion 21 and a receiving portion 22; one end of the rod part 21 is used for being connected with the injection gun, and the other end of the rod part is fixedly connected with the accommodating part 22; the needle seat 1 is sleeved on the accommodating part 22; the first cover ring 5 and the second cover ring 6 are sleeved on the rod part 21; the clamping block 3 is fixedly connected with the side wall of the rod part 21; the rod part 21 is provided with a first channel for communicating with the injection gun; the accommodating part 22 is provided with a second channel for communicating with the needle body; the first channel and the second channel are communicated to form the injection input channel 8; the needle seat 1 is inserted in the second channel. Specifically, the injection liquid flows through the first channel, the second channel and the through hole of the needle seat 1 in sequence, and then is injected into the skin through the needle body.

Further, as shown in fig. 6, a first through hole 62 adapted to the clamping block 3 is formed on the inner ring of the second cover ring 6; the first through hole 62 communicates with the spiral passage 7; the clamping block 3 is abutted with the spiral channel 7 after passing through the first through hole 62.

The number of the first through holes 62 is also two in the present application, and the two first through holes 62 are oppositely arranged; in practical application, one end of the rod part 21, which is far away from the accommodating part 22, sequentially penetrates through an inner ring of the second cover ring 6 and an inner ring of the first cover ring 5, then the rod part 21 is rotated to enable the clamping block 3 to be aligned with the first through hole, then the clamping block 3 penetrates into the spiral channel 7 from the first through hole 62, and then the first cover ring 5 is rotated, wherein in the rotating process, the clamping block 3 is driven to generate vertical displacement due to the effect of the spiral channel 7 formed by the first convex strip 54, the second convex strip 54, the third convex strip 63 and the fourth convex strip 64 on the clamping block 3, so that the movable rod 2 and the needle base 1 are driven to vertically displace; through the setting of third through-hole 63, be convenient for take out or pack into spiral passage 7 with joint piece 3.

Further, as shown in fig. 2, the needle sheath 4 is provided with a partition 44 for dividing the interior of the needle sheath 4 into a first cavity and a second cavity; the clapboard 44 is provided with a sleeve 45 which is sleeved on the needle body; one end of the sleeve 45 is communicated with the first cavity, and the other end of the sleeve is communicated with the second cavity; the receiving portion 22 is inserted into the first cavity.

Specifically, under the condition that the moving rod 2 moves up and down, the accommodating part 22 of the moving rod 2 moves up and down in the first cavity, and the arrangement of the partition plate 44 can prevent the accommodating part 22 from continuously moving down, thereby preventing the needle base 1 and the needle body from continuously moving down and preventing the needle body from penetrating into the skin to too deep depth; the quantity of sleeve pipe 45 is the same with the quantity of through-hole in this application, and the position one-to-one of all sleeve pipes 45 and all through-holes, and the needle body of fixed on the through-hole can insert in the sleeve pipe 45, through sleeve pipe 45's setting, has strengthened the protection of needle body, prevents that the needle body from producing and buckle.

Further, as shown in fig. 1 and 2, the needle sheath 4 is provided with a vacuum nozzle 46; the vacuum nozzle 46 communicates with the second cavity. Through the arrangement of the vacuum nozzle 46, the vacuum nozzle 46 can be connected with a vacuum pump for adjusting the internal and external air pressure of the second cavity during injection.

Further, as shown in fig. 1, the method further includes: a sealing cover 9 for sealing the bottom end of the needle sleeve 4; the cover 9 is inserted into the bottom end of the needle sleeve 4. Through the setting of closing cap 9, can play the guard action to needle cover 4 inside before the injection, prevent that dust etc. from entering into needle cover 4 in, take out after closing cap 9, just can be through the needle body with injection in the skin, more safety.

The micro-needle can adjust the depth of the needle body penetrating into the skin, the rotation angle of the first cover ring 5 can be conveniently and accurately controlled through the arrangement of the adjusting block 51 and the adjusting groove 42, the up-and-down movement distance of the moving rod 2, the needle base 1 and the needle body can be accurately controlled according to the rotation angle of the first cover ring 5, and further the depth of the needle body penetrating into the skin can be accurately controlled.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims (9)

1. A microneedle, comprising: the needle seat is used for fixing a needle body, the moving rod is used for driving the needle seat to axially move, and the clamping block, the first cover ring and the second cover ring are used for driving the moving rod to axially move; the first cover ring and the second cover ring are sleeved on the moving rod, and the top end of the first cover ring is clamped with the second cover ring to form a spiral channel; the clamping block is fixedly connected with the moving rod and is abutted against the inner wall of the spiral channel; one end of the movable rod is used for connecting an injection gun; an injection input channel is arranged on the movable rod along the axial direction of the movable rod; one end of the injection input channel is communicated with the output end of the injection gun; the needle seat is inserted at the other end of the injection input channel; the other end of the injection input channel is used for being communicated with a needle body; the other end of the moving rod is sleeved with a needle sleeve for protecting a needle body; the top end of the needle sleeve is rotatably connected with the bottom end of the first cover ring.

2. A microneedle according to claim 1, wherein the tip of the needle sheath is provided with a raised portion; the bottom end of the first cover ring is provided with an adjusting block; the adjusting block can be abutted with the heightening part; the heightening part is provided with a plurality of adjusting grooves which are matched with the adjusting blocks to control the rotation angle of the first cover ring.

3. The microneedle according to claim 1, wherein an annular groove is formed at the top end of the needle sheath; the bottom of the first cover ring is provided with a plurality of first clamping blocks; the first clamping block is clamped with the annular groove.

4. The microneedle according to claim 1, wherein a plurality of second fixture blocks are disposed at a top end of the first cover ring; and the second cover ring is provided with a plurality of clamping grooves which are correspondingly clamped with the second clamping blocks one to one.

5. A microneedle according to claim 1, wherein said moving rod comprises: a rod portion and a receiving portion; one end of the rod part is used for being connected with the injection gun, and the other end of the rod part is fixedly connected with the accommodating part; the needle seat is sleeved on the accommodating part; the first cover ring and the second cover ring are sleeved on the rod part; the clamping block is fixedly connected with the side wall of the rod part; the rod part is provided with a first channel which is used for being communicated with the injection gun; the accommodating part is provided with a second channel communicated with the needle body; the first channel and the second channel are communicated to form the injection input channel; the needle seat is inserted in the second channel.

6. The microneedle according to claim 5, wherein the inner ring of the second cover ring is provided with a first through hole adapted to the engaging block; the first through hole is communicated with the spiral channel; the clamping block penetrates through the first through hole and then abuts against the spiral channel.

7. A microneedle according to claim 1, wherein a partition plate for dividing the interior of the needle cover into a first cavity and a second cavity is provided on the needle cover; the partition plate is provided with a sleeve which is sleeved on the needle body; one end of the sleeve is communicated with the first cavity, and the other end of the sleeve is communicated with the second cavity; the other end of the movable rod is inserted into the first cavity.

8. A microneedle according to claim 7, wherein a vacuum nozzle is provided on the hub; the vacuum pipe orifice is communicated with the second cavity.

9. A microneedle according to any one of claims 1 to 8, further comprising: the sealing cover is used for sealing the bottom end of the needle sleeve; the sealing cover is inserted with the bottom end of the needle sleeve.

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