WO2020143491A1

WO2020143491A1 - Microneedle adjustment structure

Info

Publication number: WO2020143491A1
Application number: PCT/CN2019/129694
Authority: WO
Inventors: 何坛明
Original assignee: 何坛明
Priority date: 2019-01-10
Filing date: 2019-12-29
Publication date: 2020-07-16
Also published as: CN210186236U

Abstract

Disclosed is a microneedle adjustment structure, relating to the technical field of microneedles. The adjustment structure comprises a shell (1) and an adjustment rod (2), wherein the shell (1) is in threaded assembly with the adjustment rod (2); a rubber ring (3) is arranged between the shell (1) and the adjustment rod (2) in a sleeving manner; one end, close to the shell (1), of the adjustment rod (2) is provided with a limiting shaft (5) and a limiting ring (6) cooperating with the limiting shaft (5); and one end, close to the adjustment rod (2), inside the shell (1) is provided with a blocking part (8). The rubber ring (3) is used for improving and adjusting hand feel, and is used for preventing the adjustment rod (2) from shaking, by means of the cooperative use of the limiting shaft (5) and the limiting ring (6), the limiting ring (6) is clamped to the blocking part (8), so that the adjustment rod (2) is effectively prevented from sliding off due to excessive adjustment, and by means of designing the width of the limiting ring (6), the length of a stroke can be limited, ensuring that the adjustment conformity error is minimum, the structure is simple, and the installation is easy.

Description

Microneedle adjustment structure

Technical field

The utility model relates to the technical field of microneedles, in particular to a microneedle adjustment structure.

Background technique

Transdermal administration refers to administration of drugs through the skin surface. The drug passes through the barriers of various layers of the skin and is absorbed into the systemic circulation through capillaries to produce a systemic or local therapeutic effect. This transdermal drug delivery method is in principle the same type of drug delivery method as subcutaneous injection or intravenous infusion, but it has the advantages of being more painless, safer, stable and patient adaptable than traditional injection drug delivery methods. In transdermal drug delivery technology, the drug relies on the concentration gradient of the drug as the driving force, penetration and diffusion through the skin into the bloodstream to produce drug effects, the diffusion rate depends on the concentration gradient across the stratum corneum and the size and hydrophilicity of the drug molecules Sex. However, due to the low permeability of the skin to most drugs, there are few drugs that can effectively pass through the skin to exert drug effects through passive diffusion. In order to improve the transdermal permeability of drugs, people began to use mechanical methods to produce pores and rupture of the stratum corneum.

Among them, microneedle transdermal drug delivery technology has proved to be the most effective transdermal drug delivery based on mechanical methods. Microneedle transdermal drug delivery technology combines the advantages of subcutaneous injection and transdermal patch dual drug release. With the aid of a device with many tiny protrusions acting on the skin, it causes minimal pore damage to the skin. The drug passes through the created pores It can increase the permeability of drugs, especially for the penetration of macromolecular drugs. When using soluble biodegradable materials to make microneedles, drugs and biomolecules can be mixed into the microneedles themselves. During application, the soluble microneedle structure quickly dissolves in the skin, thereby releasing drugs and biomolecules, so there is no pointed waste.

technical problem

However, the existing microneedle adjustment structure is basically used in conjunction with the adjustment rod and the housing. Due to the adjustment of the adjustment rod and the housing thread, the adjustment rod is prone to loosening after a long time of use, which causes the adjustment rod to sway during use. And, when adjusting the adjusting rod, it often happens that the adjusting rod falls off and slides to the ground, resulting in damage to the adjusting rod and contamination with bacteria. In order to solve the above problems, the concept of the present invention was proposed.

Technical solution

The purpose of this utility is to provide a microneedle adjustment structure to solve at least one of the above-mentioned defects in the prior art.

To achieve the above objective, the present invention provides the following technical solution: A microneedle adjustment structure includes a housing and an adjustment rod, the housing and the adjustment rod are threadedly assembled, and the housing and the adjustment rod The sleeve is provided with a rubber ring, an end of the adjusting rod close to the casing is provided with a limit shaft and a limit ring matched with the limit shaft, and the end of the shell near the adjusting rod has a blocking part .

In a further improvement of the present invention, the adjustment rod is integrally formed with the limit shaft.

In a further improvement of the present invention, the limit shaft is fixedly connected to the limit ring.

In a further improvement of the present invention, the end of the housing away from the adjustment rod is covered with a cover.

Beneficial effect

In summary, the utility model has the following beneficial effects:

The microneedle adjusting structure includes a housing and an adjusting rod, the housing and the adjusting rod are threadedly assembled, a rubber ring is sleeved between the housing and the adjusting rod, and the adjusting rod is close to the One end of the housing is provided with a limit shaft and a limit ring matched with the limit shaft, and the end near the adjusting rod in the housing has a blocking part; through the above design, the adjustment feel can be improved by using a rubber ring, Moreover, the shaking of the adjusting rod is avoided, and the limiting ring is clamped on the blocking part through the cooperative use of the limiting shaft and the limiting ring, thereby effectively preventing the adjusting rod from over-adjusting and slipping. The width of the limiting ring can be designed by Limit the length of the adjustment stroke to ensure that the adjustment consistency error is extremely small, and the structure is simple and easy to install.

BRIEF DESCRIPTION

The utility model will be further described below with reference to the accompanying drawings and specific embodiments.

Figure 1 is a schematic diagram of the overall structure of the utility model.

2 is a schematic diagram of the cross-sectional structure of the utility model.

FIG. 3 is a schematic diagram of the enlarged structure of area A of the present invention.

In the drawings: 1. housing; 2. adjusting rod; 3. cover; 4. connecting shaft; 5. limit shaft; 6. limit ring; 7. rubber ring; 8. blocking part.

Best Mode of the Invention

In the description of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical" , "Horizontal", "top", "bottom", "inner", "outer", etc. indicate the azimuth or positional relationship based on the azimuth or positional relationship shown in the drawings, just to facilitate the description of the utility model and simplify the description, It does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

Referring to FIGS. 1-4, a microneedle adjustment structure disclosed by the utility model includes a housing 1 and an adjustment rod 2, the housing 1 and the adjustment rod 2 are threadedly assembled, and the housing 1 and the adjustment A rubber ring 7 is sleeved between the rods 2. By the design of the rubber ring 7, the shaking of the adjusting rod 2 is avoided; the end of the adjusting rod 2 close to the housing 1 is provided with a limiting shaft 5 and the limiting position The limiting ring 6 matched with the shaft 5 has a blocking portion 8 at the end of the housing 1 close to the adjusting rod 2; the end of the housing 1 away from the adjusting rod 2 is covered with a cover 3.

The housing 1 is a hollow housing 1, and the inner wall of the upper end of the housing 1 protrudes to form a blocking portion 8 for blocking the adjusting rod 2 to prevent the adjusting rod 2 from falling off; and the adjusting rod 2 is integrally formed with the connecting shaft 4 by connecting The shaft 4 is fixedly assembled with the limit ring 6 so that the limit ring 6 is stuck on the blocking portion 8, thereby effectively preventing the adjustment rod 2 from slipping.

Among them, a protective sleeve is sleeved on the outer surface of the casing 1, and the material of the protective sleeve is made of silicone material, so as to play a role of shock absorption and fall resistance.

In the embodiment, first, the rubber ring 7 is sleeved on the groove of the rubber ring 7 on the adjusting rod 2, and then the adjusting rod 2 is sleeved into the housing 1 and its screw assembly, and then the limit ring 6 is fixedly assembled on the adjusting rod 2 Connect the shaft 4 to block it on the blocking portion 8, and finally close the cover 3 to the housing 1, so that it is very convenient to use.

In the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be fixed or detachable Connection or integration; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediary. It can be the connection between two components or the interaction between two components.

The concept, specific structure, and technical effects of the present invention will be described clearly and completely in conjunction with the embodiments and drawings to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, those skilled in the art can obtain other embodiments without creative efforts. All belong to the protection scope of the utility model. In addition, all the connection/connection relationships mentioned in the article are not directly connected by single-finger members, but refer to that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation.

The specific description of the utility model in the above embodiments is only used to further illustrate the utility model, and cannot be understood as limiting the protection scope of the utility model. Technical engineers in the field make some non-essential things to the utility model based on the content of the utility model Improvements and adjustments fall within the scope of protection of the utility model.

Claims

A microneedle adjustment structure includes a casing (1) and an adjustment rod (2), the casing (1) and the adjustment rod (2) are threadedly assembled, characterized in that: the casing (1) and A rubber ring (7) is sleeved between the adjusting rods (2), and an end of the adjusting rod (2) near the casing (1) is provided with a limit shaft (5) and a joint with the limit shaft ( 5) A matching limit ring (6), and an end near the adjusting rod (2) in the housing (1) has a blocking portion (8).
The microneedle adjustment structure according to claim 1, wherein the adjustment rod (2) is integrally formed with the limit shaft (5).
The microneedle adjustment structure according to claim 2, wherein the limit shaft (5) is fixedly connected to the limit ring (6).
The microneedle adjustment structure according to claim 1, characterized in that: a cover (3) is closed on the end of the casing (1) away from the adjustment rod (2).