Quickly-assembled two-section type needle inserting device structure

Abstract

The utility model relates to the field of needle inserting device structures, and discloses a quick-assembly two-section type needle inserting device structure which comprises a needle cylinder, an impact block is slidably connected in the needle cylinder, an end cover is in threaded connection with the top end of the needle cylinder, a second spring is fixedly connected with the bottom end of the end cover, and the other end of the second spring is fixedly connected with the top end of the impact block. The bottom end of the impact block is fixedly connected with a sheet microneedle, one side of the needle cylinder is fixedly connected with a pin, one side of the impact block is provided with a movable groove matched with the pin in shape in the vertical direction, the side, away from the pin, of the needle cylinder is provided with a release rod distributed in the vertical direction, and the middle of the release rod is rotationally connected with one side of the needle cylinder through a pin shaft; the top end of the release rod is elastically connected with one end of the needle cylinder through a first spring, and a limiting block is fixedly connected to the side, close to the needle cylinder, of the end, away from the first spring, of the release rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to needle inserter structure field, concretely is a two -segment type needle inserter structure of quick assembly. BACKGROUND

[0002] Micro-needle is a new type of technology that has developed rapidly in recent years, which is widely used in medicine delivery system and micro sampling analysis system and other medical fields due to its advantages of precision, painless, high efficiency and convenience. The size of micro-needle is in micrometer level, and the micro-needle array penetrates the skin cuticle in a reversible micro-injury way to form a mechanical channel for biological macromolecules to pass through, avoiding the problem of reduced drug bioactivity caused by pH, digestive enzymes and liver first-pass effect in the gastrointestinal tract, and maintaining a relatively stable blood drug concentration. At the same time, it also avoids the pain and skin damage caused by injection, so it will not cause pain and trauma.

[0003] The existing needle inserter structure suitable for sheet type micro-needle mainly has the following two types: roller type, which requires the micro-needle to be in a ring structure, and the roller type structure has high cost and cannot control the depth and force of needle insertion, affecting the needle insertion effect; mechanical type, which manually presses the needle by artificial, cannot control the depth and force of needle insertion, affecting the needle insertion effect. Therefore, the present application provides a two-segment type needle inserter structure for quick assembly to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a two-segment type needle inserter structure for quick assembly to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a two-segment type needle inserter structure for quick assembly, comprising a needle cylinder, a impact block is slidably connected in the needle cylinder, an end cover is threadedly connected to the top end of the needle cylinder, a second spring is fixedly connected to the bottom end of the end cover, the other end of the second spring is fixedly connected to the top end of the impact block, a sheet micro-needle is fixedly connected to the bottom end of the impact block, a pin is fixedly connected to one side of the needle cylinder, a movable groove matching the shape of the pin is opened in one side of the impact block along the vertical direction, release rods are arranged on the side of the needle cylinder away from the pin along the vertical direction, the middle position of the release rods is rotatably connected to one side of the needle cylinder through a pin shaft, the top end of the release rods is elastically connected to one end of the needle cylinder through a first spring, a limiting block is fixedly connected to the side of the release rods away from the first spring, and a first limiting groove and a second limiting groove matching the clamping of the limiting block are opened in the impact block along the vertical direction.

[0006] As a preferred, the sheet micro-needle is fixedly attached to the bottom end of the impact block by adhesive.

[0007] As a preferred, a strip-shaped groove matching the shape of the release rods and communicating with the impact block is opened in one side of the needle cylinder.

[0008] As preferred: the needle cylinder is fixed with a fixed height frame along the horizontal direction near the side of the sheet micro-needle.

[0009] As preferred: a sliding groove is opened at the center position of the bottom end of the needle cylinder and in sliding contact with the outside of the impact block.

[0010] As preferred: the top end of the impact block is provided with a second limiting groove, and the bottom end of the second spring is sleeved and fixed outside the second limiting groove at the top end of the impact block.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The two-section needle feeder can be adapted to sheet micro-needles of different models and costs.

[0013] The two-section needle feeder can conveniently control the depth and force of the needle by the mechanical structure.

[0014] The pin fixed on one side of the needle cylinder is combined with the movable groove of the same shape opened on one side of the impact block, so that when the impact block is displaced downward along the vertical direction during the releasing process of the second spring, the top end of the pin abuts against the inner wall top end of the movable groove of the impact block, thereby limiting the impact of the impact block, avoiding that the needle depth is greater than the expected depth due to inertia during the releasing process of the second spring in the compressed state, and affecting the needle depth precision. The release rod movably connected by the pin shaft on the other side of the needle cylinder is elastically connected at one end of the needle cylinder by the horizontally arranged first spring at the top end of the release rod, so that the limiting block at the bottom end of the release rod can be fixedly connected with the first limiting groove and the second limiting groove by the elastic force of the first spring always in the compressed state, and during the releasing process of the impact block, the limiting block is extracted from the second limiting groove by the elastic force of the first spring in the compressed state, and when the impact block is displaced to the first limiting groove and the limiting block is opposite, the limiting block can be extruded into the first limiting groove to realize the clamping limiting and fixing process under the elastic force of the first spring in the compressed state. The second spring is fixed at the bottom end of the end cover, and the end cover is threadedly connected with the top end of the needle cylinder, so that the first spring with different elastic coefficients can be replaced by unscrewing the end cover, thereby meeting the requirement of different impact forces of the impact block. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structure section view of the utility model;

[0016] Fig. 2 It is an external structure schematic view of the utility model;

[0017] Fig. 3 It is a three-dimensional structure schematic view of the utility model.

[0018] In the figure: 1, needle cylinder; 2, impact block; 3, release lever; 4, pin; 5, end cover; 6, pin shaft; 7, first spring; 8, second spring; 9, height fixing frame; 10, sheet micro-needle; 11, limiting block; 12, first limiting groove; 13, second limiting groove; 14, movable groove. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] EMBODIMENT

[0021] Please refer to Figs. 1-3 , a two-section needle inserter structure of quick assembly in the figure, including needle cylinder 1, impact block 2 is slidably connected in needle cylinder 1, and end cover 5 is threadedly connected to the top end of needle cylinder 1, second spring 8 is fixedly connected to the bottom end of end cover 5, and the other end of second spring 8 is fixedly connected to the top end of impact block 2, sheet micro-needle 10 is fixedly connected to the bottom end of impact block 2, pin 4 is fixedly connected to one side of needle cylinder 1, movable groove 14 that is adapted to the shape of pin 4 is opened in the vertical direction on one side of impact block 2, release lever 3 is arranged on the side of needle cylinder 1 away from pin 4 and is distributed in the vertical direction, release lever 3 is rotatably connected to one side of needle cylinder 1 through pin shaft 6 at the middle position, and release lever 3 is elastically connected to one end of needle cylinder 1 through first spring 7 at the top end, limiting block 11 is fixedly connected to the side of needle cylinder 1 away from first spring 7, and first limiting groove 12 and second limiting groove 13 that are adapted to the clamping of limiting block 11 are opened in the vertical direction on impact block 2.

[0022] In the embodiment, sheet micro-needle 10 is fixedly attached to the bottom end of impact block 2 through the back glue, strip-shaped groove that is adapted to the shape of release lever 3 and is communicated with impact block 2 is opened on one side of needle cylinder 1, height fixing frame 9 is fixedly penetrated on the side of needle cylinder 1 close to sheet micro-needle 10 in the horizontal direction, sliding groove that is slidably contacted with the outer side of impact block 2 is opened at the center position of the bottom end of needle cylinder 1, second limiting groove 13 is arranged at the top end of impact block 2, and the bottom end of second spring 8 is fixedly sleeved outside second limiting groove 13 at the top end of impact block 2.

[0023] Further, the pin 4 is fixed on one side of the needle cylinder 1, and the movable groove 14 matched with the pin 4 is formed on the impact block 2, so that when the impact block 2 is displaced downward along the vertical direction during the releasing process of the second spring 8, the top end of the pin 4 abuts against the inner wall top end of the movable groove 14 of the impact block 2, so as to limit the impact of the impact block 2, avoid that the needle insertion depth is greater than the expected depth due to inertia during the releasing process of the second spring 8 in the compressed state, and affect the needle insertion depth precision.

[0024] The working process of the utility model is as follows: the sheet micro-needle 10 is fixed on the bottom end of the impact block 2 through the back adhesive, then the impact block 2 is pushed upward along the vertical direction, the second limiting groove 13 on one side of the impact block 2 is fixed with the limiting block 11 at the bottom end of the release rod 3, and the second spring 8 is in the compressed state, the needle cylinder 1 is placed in the designated position, the needle insertion depth is determined through the fixed height frame 9, the limiting block 11 is pressed on the side close to the first spring 7, so that the limiting of the first limiting groove 12 is released, the impact block 2 drives the sheet micro-needle 10 to release and insert the needle under the elasticity of the second spring 8, the pin 4 abuts against the inner wall top end of the movable groove 14 of the impact block 2, so that the impact block 2 stops moving, and the limiting block 11 at the other end of the release rod 3 is fixed with the second limiting groove 13 under the elasticity of the first spring 7, the end cover 5 connected with the needle cylinder 1 is screwed, the second spring 8 with different elastic coefficients is replaced, and the impact force is adjusted.

[0025] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0026] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A two-section needle inserter structure of quick assembly, comprising a needle cylinder (1), characterized in that: a shock block (2) is slidably connected in the needle cylinder (1), and an end cap (5) is threadedly connected to the top end of the needle cylinder (1), the bottom end of the end cap (5) is fixedly connected with a second spring (8), the other end of the second spring (8) is fixedly connected with the top end of the shock block (2), the bottom end of the shock block (2) is fixedly connected with a sheet micro-needle (10), one side of the needle cylinder (1) is fixedly connected with a pin (4), a movable groove (14) is formed in one side of the shock block (2) along the vertical direction and is adapted to the shape of the pin (4), and a release lever (3) is arranged on the side of the needle cylinder (1) away from the pin (4) and is distributed along the vertical direction, the middle position of the release lever (3) is rotatably connected with one side of the needle cylinder (1) through a pin shaft (6), the top end of the release lever (3) is elastically connected with one end of the needle cylinder (1) through a first spring (7), the end of the release lever (3) away from the first spring (7) is fixedly connected with a limiting block (11) near one side of the needle cylinder (1), and the shock block (2) is provided with a first limiting groove (12) and a second limiting groove (13) which are adapted to the clamping of the limiting block (11) and are formed along the vertical direction.

2. A quick assembly two-piece needle introducer structure as defined in claim 1, wherein: The sheet micro-needle (10) is fixedly attached to the bottom end of the shock block (2) by adhesive.

3. A quick assembly two-part needle introducer structure as claimed in claim 2, wherein: A strip-shaped groove is formed in one side of the needle cylinder (1) and is adapted to the shape of the release lever (3) and is in communication with the shock block (2).

4. A quick assembly two-part needle introducer structure as claimed in claim 3, wherein: A height fixing frame (9) is fixedly arranged along the horizontal direction near the sheet micro-needle (10) on one side of the needle cylinder (1).

5. A quick assembly two-piece needle introducer structure as defined in claim 4, wherein: A sliding groove is formed in the center position of the bottom end of the needle cylinder (1) and is in sliding contact with the outside of the shock block (2).

6. A quick assembly two-part needle introducer structure as claimed in claim 5 wherein: The top end of the shock block (2) is provided with the second limiting groove (13), and the bottom end of the second spring (8) is fixedly sleeved outside the second limiting groove (13) of the top end of the shock block (2).

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