CN110575588B

CN110575588B - A safety device for the drug storage bin of a fully automatic insulin injection pen

Info

Publication number: CN110575588B
Application number: CN201910937231.8A
Authority: CN
Inventors: 陈松; 陆慧云
Original assignee: Wuxi Hongyu Medical Technology Co ltd
Current assignee: Wuxi Hongyu Medical Technology Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2024-12-31
Anticipated expiration: 2039-09-29
Also published as: CN110575588A

Abstract

The present invention discloses a drug storage bin safety device for a fully automatic insulin injection pen, which comprises a fixed seat, a drug storage bin and a driving rod, a toggle switch is arranged on the fixed seat, one end of the drug storage bin is rotatably mounted on the fixed seat through a first rotating shaft, a buckle is arranged at the bottom of the other end, the driving rod is movably mounted in a driving sleeve, the end of the driving sleeve is telescopically equipped with a limiting ring, a first elastic member is arranged between the limiting ring and the driving sleeve, the driving rod passes through the limiting ring and its head radius is larger than the inner hole of the limiting ring, a sliding plate is arranged on the fixed seat, a clamping hole is provided on the sliding plate to cooperate with the buckle, and a transmission component for disengaging the buckle from the clamping hole is arranged between the limiting ring and the sliding plate. The above-mentioned drug storage bin safety device is not only simple in structure, but also convenient and quick in changing medicines; and the drug storage bin can only be opened after the injection needle is removed and the driving rod is fully retracted into place, thereby improving the safety and reliability of the fully automatic injector.

Description

Medicine storage bin safety device of full-automatic insulin injection pen

Technical Field

The invention relates to a full-automatic insulin injection pen, in particular to a safety device of a medicine storage bin of the full-automatic insulin injection pen.

Background

Most of the existing full-automatic electronic insulin injection pens have realized full-automatic injection. In recent years, a side flip-open type drug-loading injector is designed and developed, the full-automatic electronic insulin injection pen avoids repeated disassembly of a shell, is convenient for changing drugs, and prolongs the service life of the electronic pen type injection pen. However, the injection pen with the side-face flip-open type medicine filling device on the market is not provided with a safety device for opening and closing the medicine storage bin, and misoperation often occurs in the specific use process, for example, misoperation is easy to occur when a user changes medicine, and when a needle is not taken down, the operation of changing the medicine bottle is performed, so that secondary injury is easy to occur. The user opens the medicine storage bin after the driving rod is not retracted in place, and the driving rod is easy to damage.

Disclosure of Invention

The invention aims to provide a medicine storage bin safety device of a full-automatic insulin injection pen, which aims to solve the problem that a side flip charging type full-automatic injector in the prior art is easy to operate by mistake when the medicine storage bin is opened.

To achieve the purpose, the invention adopts the following technical scheme:

The utility model provides a full-automatic insulin injection pen store up medicine storehouse safety device, it includes fixing base, store up medicine storehouse and actuating lever, be provided with toggle switch on the fixing base, store up the one end in medicine storehouse and rotationally assemble on the fixing base through first pivot, the bottom of the other end is provided with the buckle, the actuating lever can be assembled in the drive sleeve with moving, wherein, drive telescopic tip can be equipped with the spacing collar telescopically, be provided with between spacing collar and the drive sleeve and be used for promoting the spacing collar to the first elastic component that is close to medicine storehouse direction and remove, the actuating lever passes the spacing collar sets up and its head radius is greater than the hole of spacing collar, be provided with the drive rocking arm through the second pivot rotationally on the fixing base, install the second elastic component that is used for making the drive rocking arm reset in the second pivot, the bottom of toggle switch is provided with the stopper, set up the spacing groove on the stopper, one end of drive rocking arm be located one side of spacing collar, another end card in spacing groove carries out spacing, be provided with in the stopper below the drive plate on the fixing base and be provided with the stopper, it has the slider to set up in the slider to slide plate and the slider to slide plate on the slider, the slider has the slider to set up through the slider.

In particular, a fourth elastic piece for automatically bouncing off the medicine storage bin is arranged on the first rotating shaft.

In particular, a clamping head matched with the toggle switch is arranged on the medicine storage bin.

Particularly, the front end of the medicine storage bin is detachably provided with the injection needle, the bottom of one end of the medicine storage bin, which is provided with the injection needle, can be provided with the pressing block in a sliding manner along the horizontal direction, the pressing block is provided with a strip hole, a guide pin is arranged in the strip hole, when the injection needle is assembled on the medicine storage bin, one end of the pressing block is limited by the injection needle in a pressing manner, and the other end of the pressing block is limited by abutting against the end part of the fixing seat.

Particularly, the briquetting is whole to be "L" structure, including horizontal limit and vertical limit, the tip in medicine storage storehouse is provided with the breach that is used for assembling the briquetting, the bottom downwardly extending in breach has the articulated seat, the guide pin is provided with on the articulated seat.

In particular, the rectangular hole is opened and is located the horizontal edge, vertical limit is located in the breach, and when the syringe needle is assembled on storing up the medicine storehouse, the outside of vertical limit flushes with the terminal surface of the storehouse body.

Compared with the prior art, the medicine storage bin safety device of the full-automatic insulin injection pen has the advantages that the structure is simple, the medicine replacement is convenient and quick, the medicine storage bin can be opened only after the injection needle is taken down and the driving rod is completely retracted in place, misoperation of a user is avoided, and the safety reliability of the full-automatic injector is improved.

Drawings

FIG. 1 is an exploded view of a cartridge safety device for a full automatic insulin injection pen according to an embodiment of the present invention;

FIG. 2 is an assembly view of a cartridge safety device for a full-automatic insulin injection pen according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of a pressing block of a safety device of a medicine storage bin of a full-automatic insulin injection pen according to an embodiment of the present invention.

Detailed Description

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown 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. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, in the embodiment, a drug storage bin safety device of a full-automatic insulin injection pen is disclosed, the drug storage bin adopts a side flip charging type structural design, and comprises a fixed seat 1, a drug storage bin 2, a driving rod 3 and an injection needle 4, one end of the drug storage bin 2 is rotatably assembled on the fixed seat 1 through a first rotating shaft 5, a torsion spring 6a for automatically bouncing the drug storage bin 2 to provide elasticity is assembled on the first rotating shaft 5, a drug bottle 7 is placed in the drug storage bin 2, the driving rod 3 is movably assembled in a driving sleeve 8 and is positioned at the opening and closing end of the drug storage bin 2, a limit ring 9 is telescopically assembled at the end part of the driving sleeve 8, a coil spring 10 for pushing the limit ring 9 to move towards the direction close to the drug storage bin 2 is arranged between the limit ring 9 and the driving sleeve 8, the driving rod 3 passes through the limit ring 9 and has a head radius larger than an inner hole of the limit ring 9, the fixed seat 1 is rotatably provided with a driving rocker arm 12 through a second rotating shaft 11, the second rotating shaft 11 is provided with a torsion spring 6b for resetting the driving rocker arm 12, the fixed seat 1 is provided with a toggle switch 13 for opening and closing the medicine storage bin 2, the bottom of the toggle switch 13 is provided with a limiting block 14, the limiting block 14 is provided with a limiting groove 15, one end of the driving rocker arm 12 is positioned at one side of a limiting ring 9, the other end of the driving rocker arm 12 is clamped in the limiting groove 15 for limiting, the fixed seat 1 is provided with a sliding plate 16 below the driving rocker arm 12, the sliding plate 16 is provided with a clamping hole 17 in a matched manner, the bottom of one end of the medicine storage bin 2 is provided with a clamping hook 18 in a matched manner, the sliding plate 16 is provided with a torsion spring 6c for resetting the sliding plate 16, a transmission lever 20 is rotatably assembled between the sliding plate 16 and the limiting block 14 on the fixed seat 1 through a third rotating shaft 19, the two ends of the transmission lever 20 are respectively arranged corresponding to the limiting block 14 and the sliding plate 16, and the medicine storage bin 2 is provided with a clamping head 21 which is matched with the toggle switch 13.

The medicine storage bin 2 comprises a cylindrical bin body, the end part of the bin body is provided with an external thread section with the radius smaller than that of the bin body, and the injection needle 4 is detachably assembled on the external thread section through an internal thread. The bottom of the one end of storehouse body assembly injection needle 4 can be equipped with briquetting 22 along horizontal direction with sliding forward and backward, and briquetting 22 wholly is "L" structure, including horizontal limit 23 and vertical limit 24, horizontal limit 23 extends to both sides has epitaxial piece 25, has seted up rectangular hole 26 on the horizontal limit 23, and the tip of the storehouse body is provided with the breach that is used for holding vertical limit 24, and the bottom of breach downwardly extending has articulated seat 27, and the both ends of guide pin 28 are assembled on articulated seat 27 and pass rectangular hole 26 setting to assemble briquetting 22 on articulated seat 27.

When the medicine storage bin 2 of the full-automatic injector is closed, the coil spring 10 pushes out the limit ring 9 to be propped against the inside of the medicine storage bin 2, and meanwhile, the clamping hook 18 at the bottom of the medicine storage bin 2 hooks the clamping hole 17 to limit the medicine storage bin 2, and the clamping head 21 at the top is inserted into the toggle switch 13 to limit. When the medicine storage bin 2 needs to be opened for changing medicine, the injection needle 3 is completely dismounted, and the mechanism principle is that when the tail end of the injection needle 4 is screwed and assembled on the external thread section, the vertical edge 24 of the pressing block 22 is limited in the notch through the tail end of the injection needle 4, the end part of the horizontal edge 23 abuts against the end part of the fixing seat 1 for limiting, and at the moment, the medicine storage bin 2 cannot be outwards turned open. Only when the injection needle 4 is completely detached, the outer side of the vertical edge 24 is not limited by the injection needle 4, the medicine storage bin 2 can be outwards turned over to be opened, and the integral pressing block 22 outwards moves through the strip hole 26 in the opening process, so that interference is avoided. And the driving rod 3 needs to be guaranteed to retract in place, if the driving rod 3 does not retract in place, the toggle switch 13 cannot be toggled under the limit of the driving rocker arm 12, the driving rod 3 can drive the limit ring 9 to move towards the direction close to the end of the driving rocker arm 12 against the elastic force of the spiral spring 10 in the resetting process, after the driving rod is completely retracted in place, the limit ring 9 abuts against one end of the driving rocker arm 12 to drive the driving rocker arm 12 to rotate, the other end is driven to rotate so as to be separated from the limit groove 15, the toggle switch 13 is not limited, then the toggle switch 13 is operated to push one end of the transmission lever 20 to rotate, and then the other end of the transmission lever 20 is used for pushing the sliding plate 16 to slide towards the direction close to the injection needle 4, so that the clamping hook 18 is finally separated from the clamping hole 17, at the moment, the medicine storage bin 2 is completely out of limit, and the medicine bin is automatically popped outwards under the action of the torsion spring 6 a.

Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims

1. A drug storage bin safety device for a fully automatic insulin injection pen, comprising a fixed seat, a drug storage bin and a driving rod, wherein a toggle switch is arranged on the fixed seat, one end of the drug storage bin is rotatably mounted on the fixed seat through a first rotating shaft, and a buckle is arranged at the bottom of the other end, and the driving rod is movably mounted in a driving sleeve, characterized in that a limit ring is telescopically mounted on the end of the driving sleeve, a first elastic member for pushing the limit ring to move toward the drug storage bin is arranged between the limit ring and the driving sleeve, the driving rod passes through the limit ring and its head radius is larger than the inner hole of the limit ring, and the fixed seat is rotatable through a second rotating shaft. A driving rocker arm is arranged on the ground, a second elastic member for resetting the driving rocker arm is installed on the second rotating shaft, a limiting block is arranged at the bottom of the toggle switch, a limiting groove is arranged on the limiting block, one end of the driving rocker arm is located on one side of the limiting ring, and the other end is clamped in the limiting groove for limiting, a sliding plate is arranged on the fixing seat below the driving rocker arm, a clamping hole is arranged on the sliding plate to cooperate with the clamping buckle, and a third elastic member for resetting the sliding plate is arranged on the sliding plate, a transmission lever is rotatably assembled on the fixing seat between the sliding plate and the limiting block through the third rotating shaft, and the two ends of the transmission lever are arranged corresponding to the limiting block and the sliding plate respectively;

The first elastic member is a coil spring. During the return process of the driving rod, the limiting ring can drive the limiting ring to overcome the elastic force of the coil spring and move toward the direction close to the end of the driving rocker arm. When the driving rod is fully retracted, the limiting ring can abut against one end of the driving rocker arm, driving the driving rocker arm to rotate, thereby driving the other end to rotate out of the limiting groove, causing the toggle switch to lose its limit.

2. The drug storage chamber safety device of a fully automatic insulin injection pen according to claim 1 is characterized in that a fourth elastic member for automatically opening the drug storage chamber is mounted on the first rotating shaft.

3. The drug storage bin safety device of the fully automatic insulin injection pen according to claim 1, characterized in that a clamping head adapted to the toggle switch is provided on the drug storage bin.

4. The drug storage bin safety device of a fully automatic insulin injection pen according to any one of claims 1 to 3 is characterized in that an injection needle is detachably mounted on the front end of the drug storage bin, and a pressure block is mounted on the bottom of one end of the drug storage bin where the injection needle is mounted so as to be slidable back and forth in a horizontal direction, and an elongated hole is provided on the pressure block, and a guide pin is provided in the elongated hole, and when the injection needle is mounted on the drug storage bin, one end of the pressure block is pressed and limited by the injection needle, and the other end is pressed against the end of the fixed seat for limiting.

5. The drug storage bin safety device of the fully automatic insulin injection pen according to claim 4 is characterized in that the pressure block is an "L"-shaped structure as a whole, including horizontal and vertical edges, and a notch for assembling the pressure block is provided at the end of the drug storage bin, and a hinge seat is extended downward from the bottom of the notch, and the guide pin is arranged on the hinge seat.

6. The drug storage bin safety device of the fully automatic insulin injection pen according to claim 5 is characterized in that the long hole is opened on the horizontal edge, the vertical edge is located in the gap, and when the injection needle is assembled on the drug storage bin, the outer side of the vertical edge is flush with the end face of the bin body.