CN217014946U

CN217014946U - Insulin injection pen capable of automatically pulling out needle

Info

Publication number: CN217014946U
Application number: CN202220153563.4U
Authority: CN
Inventors: 金月
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-07-22
Anticipated expiration: 2032-01-20

Abstract

The utility model discloses an insulin injection pen capable of automatically pulling out a needle head, which comprises a body and the needle head, wherein a needle seat is arranged at the front end of the body, the needle head is installed on the needle seat, an elastic ring is arranged in the needle seat, the elastic ring is exposed out of the end surface of the needle seat, and the elastic direction axially extends along the needle seat; the inner ring of the lower end of the needle head is connected with the outer ring of the lower end of the needle seat in a clamping manner. When the needle head is installed, the needle head is aligned with the movable lug by the fixed lug and sleeved on the needle seat, the elastic ring is gradually compressed, the needle head is slightly rotated after reaching the bottom, the movable lug is clamped with the fixed lug, and the needle head and the needle seat are combined tightly under the elastic action of the elastic ring. After the use, do not need manual the syringe needle of unscrewing, only need stir the button, the button drives movable lug and removes, removes the contact with fixed lug, and the syringe needle pops out under the effect of elastic ring compression spring, realizes that the syringe needle is automatic to be pulled out. The installation and the pulling-out of the needle head are simple.

Description

Insulin injection pen capable of automatically pulling out needle

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to an insulin injection pen with an automatically pulled needle.

Background

The insulin pen is convenient to use, and can be operated by a patient at home, so that the treatment enthusiasm of the diabetic patient is greatly improved. When using insulin pen injection, need get new syringe needle and install on the needle file of injection pen body, be threaded connection between current syringe needle and the needle file, after the injection pen finishes using, need manual syringe needle of screwing down to abandon, and when rotatory, because the syringe needle is less, need rotatory many circles moreover, the syringe needle end has sharp-pointed head simultaneously, stabs the hand easily during the rotation.

SUMMERY OF THE UTILITY MODEL

Aiming at the current defects, the utility model provides an insulin injection pen capable of automatically pulling out a needle head.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

an insulin injection pen capable of automatically pulling out a needle head comprises a body and the needle head, wherein a needle seat is arranged at the front end of the body, the needle head is installed on the needle seat, an elastic ring is arranged in the needle seat, the elastic ring is exposed out of the end face of the needle seat, and the elastic direction axially extends along the needle seat; the inner ring of the lower end of the needle head is connected with the outer ring of the lower end of the needle seat in a clamping manner.

The needle head is sleeved on the needle seat and is connected with the needle seat in a clamping manner, so that convenience is brought; after the clamping connection is released, the needle is popped out under the action of the elastic ring, the operation is simple, the multi-turn rotation is not needed, and the hand pricking probability is reduced to a certain extent.

Preferably, the inner ring of the lower end of the needle head is provided with fixed lugs at intervals, the outer ring of the lower end of the needle seat is provided with movable lugs at intervals, and the fixed lugs are positioned below the movable lugs during clamping. When the needle is sleeved outside the needle seat, the fixed lug and the movable lug are staggered, when the needle is waited to abut against the lower end of the needle seat, the needle is rotated, the fixed lug is positioned below the movable lug, the elastic action of the elastic ring is matched, and the needle is firmly clamped on the needle seat, so that the installation is simple.

Preferably, the lower end of the needle base is provided with a long groove for the movable lug to slide, and the long groove extends and is formed along the axial direction of the needle base. The movable lug can slide in the long groove to release the clamping connection with the fixed lug.

Preferably, a rotating cylinder is coaxially arranged in the body, one end of the rotating cylinder is fixedly connected with the movable lug, the other end of the rotating cylinder is connected with a driving button, and the driving button is exposed out of the outer surface of the body. The button sets up in body week side outside, and is rotatory through rotatory section of thick bamboo control activity lug to break away from the joint contact with fixed lug, simple structure, convenient operation.

Preferably, the needle base comprises an outer cylinder and an inner cylinder which are coaxially arranged, and the elastic ring is embedded between the inner cylinder and the outer cylinder through a spring. Simple structure and no interference to the inner hole of the needle seat.

Preferably, a stop block is arranged on one side of the long groove, so that the needle can play a role in stopping the fixing lug when rotating, transitional rotation is avoided, and the clamping effect is poor.

Preferably, the body is internally provided with an annular track with an F-shaped section for inserting the end part of the rotary cylinder. The installation of rotary drum is firm, and the action is stable.

The technical scheme can obtain the following beneficial effects:

when the needle head is installed, the needle head is aligned with the movable lug by the fixed lug and sleeved on the needle seat, the elastic ring is gradually compressed, the needle head is slightly rotated after reaching the bottom, the movable lug is clamped with the fixed lug, and the needle head and the needle seat are combined tightly under the elastic action of the elastic ring. After the needle is used, the needle does not need to be screwed down manually, only the button needs to be shifted, the movable convex block is driven by the button to move and is released from contact with the fixed convex block, the needle is ejected out under the action of the elastic ring compression spring, and the needle is automatically pulled out. The installation and the pulling-out of the needle head are simple.

Drawings

FIG. 1 is a schematic of the present invention.

Fig. 2 is a schematic view of a-a of fig. 1.

Fig. 3 is a schematic view of the inner ring of the lower end of the needle of the present invention.

Fig. 4 is a schematic view of the lower end outer ring of the needle base of the utility model.

Fig. 5 is a partial schematic view at the button of the present invention.

Figure 6 is a partial cross-sectional view of the body of the present invention.

In the figure:

1. the needle comprises a needle head 11, a fixed lug 2, a body 21, a needle seat 22, a movable lug 23, a button 24, an elongated slot 25, a stop 26, a rotary cylinder 27, an elastic ring 28, a spring 29 and a track.

Detailed Description

The utility model is further described with reference to the accompanying drawings:

as shown in fig. 1, the utility model discloses an insulin injection pen capable of automatically pulling out a needle, which comprises a body 2 and a needle 1, wherein the front end of the body 2 is provided with a needle seat, the needle 1 is arranged on the needle seat, an elastic ring is arranged in the needle seat, the elastic ring 27 is exposed out of the end surface of the needle seat 21, and the elastic direction extends along the axial direction of the needle seat 21; the inner ring of the lower end of the needle head 1 is connected with the outer ring of the lower end of the needle seat 21 in a clamping manner.

The needle head 1 is sleeved on the needle seat 21 and is connected with the needle seat through clamping, so that convenience is brought; after the clamping connection is released, the needle head 1 is popped out under the action of the elastic ring 27, the operation is simple, multiple circles of rotation are not needed, and the probability of pricking hands is reduced to a certain extent.

As shown in fig. 2-4, the inner ring of the lower end of the needle 1 is provided with fixed protrusions 11 at intervals, the outer ring of the lower end of the needle base 21 is provided with movable protrusions 22 at intervals, and when the needle base is clamped, the fixed protrusions 11 are located below the movable protrusions 22. When syringe needle 1 suit was outside needle file 21, fixed lug 11 staggers with activity lug 22, and when treating that syringe needle 1 end supports and leans on the needle file 21 lower extreme, rotatory syringe needle 1 made fixed lug 11 be located under the activity lug 22, and the elastic force effect of cooperation elastic ring 27 again blocks syringe needle 1 firmly on needle file 21, and the installation is simple.

The lower end of the needle seat 21 is provided with a long groove 24 for the movable lug to slide, and the long groove 24 extends along the axial direction of the needle seat 21. The movable projection 22 can slide in the elongated slot 26 to release the snap-fit connection with the fixed projection 11.

As shown in fig. 5, a rotary cylinder 26 is coaxially arranged in the body, one end of the rotary cylinder 26 is fixedly connected with the movable lug 22, the other end is connected with the driving button 23, and the driving button 23 is exposed out of the outer surface of the body 2. The button 23 is arranged outside the periphery of the body, the movable lug 22 is controlled to rotate through the rotating cylinder 26 so as to be separated from clamping contact with the fixed lug 11, and the structure is simple and the operation is convenient.

The needle base 21 comprises an outer cylinder and an inner cylinder which are coaxially arranged, and an elastic ring 27 is embedded between the inner cylinder and the outer cylinder through a spring 28. Simple structure and does not interfere with the inner hole of the needle seat 21.

One side of the long groove 24 is provided with a stop 25 which can play a role of stopping the fixed lug 11 when the needle head rotates, so that transitional rotation is avoided, and the clamping effect is not good.

An annular rail 29 with an F-shaped section is arranged in the body 1, and the end part of the rotary cylinder 26 is inserted into the annular rail. The rotary drum 26 is firmly installed and stably operates.

When the needle is installed, the needle 1 is sleeved on the needle seat 21 by aligning the fixed lug 11 with the movable lug 22, the elastic ring 27 is gradually compressed, the needle 1 is slightly rotated after reaching the bottom, so that the movable lug 22 is clamped with the fixed lug 11, and under the elastic action of the elastic ring 27, the needle 1 and the needle seat 21 are combined more tightly. After the use, the needle head 1 does not need to be manually screwed down, only the button 23 needs to be shifted, the button 23 drives the movable lug 22 to move and release contact with the fixed lug 11, the needle head 1 pops out under the action of the elastic ring 27 compression spring, and the automatic pulling-out of the needle head 1 is realized. The installation and the pulling-out of the needle head 1 are both simple.

The above description is only a preferred embodiment of the present invention, and it is within the scope of the appended claims to cover all modifications of the present invention which may be affected by the above description and the accompanying drawings.

Claims

1. The utility model provides a can pull out insulin injection pen of syringe needle automatically which characterized in that: the needle holder is arranged at the front end of the body, the needle is mounted on the needle holder, an elastic ring is arranged in the needle holder, the elastic ring is exposed out of the end face of the needle holder, and the elastic direction extends along the axial direction of the needle holder; the inner ring of the lower end of the needle head is connected with the outer ring of the lower end of the needle seat in a clamping manner.

2. An insulin injection pen capable of automatically pulling out a needle according to claim 1, which is characterized in that: fixed lugs are arranged at intervals in the inner ring of the lower end of the needle head, movable lugs are arranged at intervals in the outer ring of the lower end of the needle seat, and the fixed lugs are located below the movable lugs during clamping.

3. An insulin injection pen with an automatically removable needle according to claim 2, wherein: the lower end of the needle base is provided with an elongated slot for the movable lug to slide, and the elongated slot extends along the axial direction of the needle base.

4. An insulin injection pen with an automatically removable needle according to claim 3, wherein: the body is internally and coaxially provided with a rotating cylinder, one end of the rotating cylinder is fixedly connected with the movable lug, the other end of the rotating cylinder is connected with a driving button, and the driving button is exposed out of the outer surface of the body.

5. The insulin injection pen with the automatic needle pulling-out function according to claim 1, wherein: the needle stand comprises an outer barrel and an inner barrel which are coaxially arranged, and the elastic ring is embedded between the inner barrel and the outer barrel through a spring.

6. An insulin injection pen with an automatically removable needle according to claim 3, wherein: and a stop block is arranged on one side of the long groove.

7. An insulin injection pen capable of automatically pulling out a needle according to claim 4, which is characterized in that: an annular track with an F-shaped section is arranged in the body, and the end part of the rotary cylinder can be inserted into the annular track.