CN212340967U

CN212340967U - Detection apparatus for pen type syringe cushion adhesive force

Info

Publication number: CN212340967U
Application number: CN202020976218.1U
Authority: CN
Inventors: 王冬伟; 钱承玉; 熊巍; 孙光宇
Original assignee: Shandong Quality Inspection Center for Medical Devices
Current assignee: Shandong Quality Inspection Center for Medical Devices
Priority date: 2020-05-31
Filing date: 2020-05-31
Publication date: 2021-01-12
Anticipated expiration: 2030-05-31

Abstract

The utility model relates to the technical field of medical product performance detection, in particular to a device for detecting adhesive force of a rubber pad of a pen-type injector, which comprises an upper fixing seat and a perforation rod, wherein the upper fixing seat is connected with a tensile testing machine, the perforation rod is arranged on the upper fixing seat, the device also comprises a transparent cushion block and a transparent lead cover seat, the transparent lead cover seat is arranged above the transparent cushion block, the transparent cushion block is hollow, the transparent lead cover seat is provided with a mounting hole, an aluminum cover sample can be placed in the mounting hole, the aluminum cover sample comprises an aluminum cap and a rubber gasket, a puncture hole is arranged above the aluminum cap, the aluminum cap is supported by the mounting hole, the rubber gasket can pass through the aluminum cap, the rubber gasket is arranged inside the aluminum cap, through fixing the aluminium lid sample on transparent lead lid seat, can not make the aluminium lid sample drop, make the aluminium lid sample and perforation stick be in on the same axis again to it is more accurate to make test data.

Description

Detection apparatus for pen type syringe cushion adhesive force

Technical Field

The utility model relates to a medical treatment product performance check out test set technical field specifically is a detection device of pen-type syringe cushion adhesive force.

Background

The pen-type injector is a medicine packaging product integrating injection and packaging, and is mainly used for injection and treatment of diabetic insulin clinically. The liquid medicine is directly filled into the needle tube, and is sealed and stored by the piston, and is pushed out by the push rod when in use, so that the liquid medicine belongs to aseptic medicines, and the aluminum cover for the pen type injector has certain influence on the packaging integrity of the medicines. The quality of the aluminum cover for the pen type injector plays an important role in medicine safety, the national medicine package material standard has clear index requirements on various accessories of the pen type injector, wherein clear regulations on the detection items of the aluminum cover for the pen type injector are provided in the YBB00142004-2015 aluminum cover for the pen type injector, and the standards comprise indexes such as matching, adhesive force of a rubber pad, puncture force, puncture scrap falling, leakage experiments, piston sliding experiments and the like.

The aluminum cover for the pen type injector consists of a rubber gasket and an aluminum cap, and points out in the adhesive force detection project of the rubber gasket, the detection process in the prior art is generally as follows: taking a proper amount of the aluminum cover, placing the top end of the aluminum cover on a testing machine, applying force to the rubber pad at a testing speed of 10mm/min +/-2 mm/min through a metal rod with a diameter slightly smaller than a puncture small hole of the aluminum cover, and immediately reading a load numerical value on the testing machine when the rubber pad moves in the aluminum cap, wherein the force for separating the rubber pad from the aluminum cover is not less than 1.0N.

In an actual test, the outer edge of the aluminum cover is usually required to be clamped, when the force applied by the clamp to the outer edge surface of the aluminum cover is too small, the downward pressure applied by the metal bar can separate the aluminum cap and the aluminum cover from the clamp, and a sample moves; when the force applied to the outer edge surface of the aluminum cover by the clamp is too large, the aluminum cap can form external pressure on the gasket instead of pure adhesive force of the rubber mat, so that the test result is inaccurate. If do not adopt clamping device, place the aluminium lid on the flat board, the aluminium lid removes easily during the test, leads to bar and aluminium lid not on a straight line, causes the experimental data error.

Disclosure of Invention

The utility model aims at the problem that exists, a detection apparatus for pen-type syringe cushion adhesive force is provided, through fixing the aluminium lid sample on transparent lead cover seat, make the lower edge card of aluminium cap in the mounting hole of transparent lead cover seat, and the rubber gasket can pass the mounting hole, the mounting hole only provides the holding power to the aluminium cap, and can not exert pressure to the outer fringe face of aluminium cap, neither can make the aluminium lid sample drop, make the aluminium lid sample and perforate the stick to be in on the same axis again, thereby make test data more accurate.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a detection apparatus for pen-type syringe cushion adhesive force, includes fixing base and perforation stick, last fixing base be connected with tensile testing machine, the perforation stick set up on last fixing base, still include transparent cushion and transparent lead cover seat, transparent lead cover seat sets up in transparent cushion top, the inside cavity of transparent cushion, is provided with the mounting hole on the transparent lead cover seat, the mounting hole in can place aluminium lid sample, aluminium lid sample includes aluminium cap and rubber gasket, aluminium cap top be provided with the puncture hole, mounting hole support column aluminium cap and rubber gasket can pass through, the rubber gasket sets up inside aluminium cap, perforation stick and aluminium lid sample coaxial line.

Further, the mounting hole be the step hole, the big pore cooperation of aluminium cap and mounting hole, the diameter of perforation stick be less than the diameter of puncture hole, perforation stick exert pressure to the rubber gasket after the puncture hole, the rubber gasket can pass the aperture of mounting hole under the pressure effect.

Further, tensile testing machine drives the fixing base and reciprocates, the bottom of going up the fixing base can be dismantled with the perforation stick and be connected, the side of the junction of perforation stick and last fixing base be provided with first screw, first screw is used for fixed perforation stick.

Furthermore, the transparent cushion block is a transparent disc, a cavity is arranged in the middle of the disc, and the cavity is used for collecting the falling rubber gaskets.

Preferably, the transparent cushion block and the transparent lead cover seat are detachably connected through a second screw.

Further, the diameter of the cavity is larger than that of the mounting hole.

Furthermore, the perforating rod is provided with sizes of different specifications, and the mounting hole of the transparent lead cover seat is provided with sizes of different specifications.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through fixing the aluminium lid sample on transparent lead lid seat for the lower edge card of aluminium cap is in the mounting hole of transparent lead lid seat, and the rubber gasket can pass the mounting hole, only provides holding power to the aluminium cap, and can not exert pressure to the outer fringe face of aluminium cap, can not make the aluminium lid sample drop.

2. Through the position of adjustment transparent cushion, make the axis of perforation stick and aluminium lid sample on an axis, transparent cushion can be fixed as the base, and the perforation stick can not cause the removal when exerting force to make the better accuracy of test data.

3. According to different specifications of the aluminum cover sample, the perforating rod and the transparent lead cover seat with different specifications can be selected, and the applicability is strong.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the detecting device of the present invention,

FIG. 2 is a schematic view of the installation state of the aluminum cap and the transparent lead cap base of the present invention,

fig. 3 is a perspective view of the detecting device of the present invention.

In the figure: 1. go up fixing base, 2, first screw, 3, the perforation stick, 4, transparent cushion, 5, transparent lead cover seat, 6, aluminium lid sample, 7, second screw, 8, puncture hole, 9, rubber gasket, 10, aluminium cap, 11, mounting hole, 12, cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

As shown in figures 1-3

Example one

A detection device for adhesive force of a rubber pad of a pen-type injector comprises an upper fixing seat 1 and a perforation rod 3, wherein the upper fixing seat 1 is connected with a tensile testing machine, the perforation rod 3 is arranged on the upper fixing seat 1, the detection device further comprises a transparent cushion block 4 and a transparent lead cover seat 5, the transparent lead cover seat 5 is arranged above the transparent cushion block 4, the transparent cushion block 4 is hollow, a mounting hole 11 is formed in the transparent lead cover seat 5, an aluminum cover sample 6 can be placed in the mounting hole 11, as shown in figure 2, the aluminum cover sample 6 comprises an aluminum cap 10 and a rubber gasket 9, the mounting hole 11 supports the aluminum cap 10, the rubber gasket 9 can pass through the aluminum cap 10, the rubber gasket 9 is arranged at the top of the aluminum cap 10, a puncture hole 8 is formed above the aluminum cap 10, the perforation rod 3 and the aluminum cover sample 6 are coaxial, the mounting hole 11 is a stepped hole, the aluminum cap 10 is matched with a large hole of the mounting hole 11, the upper surface of the mounting hole 11 is provided with a large hole, the lower surface of the mounting hole is provided with a small hole, the diameter of the large hole is matched with the outer diameter of the aluminum cap 10, the diameter of the small hole is matched with the diameter of the rubber gasket 9, the perforating rod 3 applies pressure to the rubber gasket 9 after penetrating the hole 8, and the rubber gasket 9 can penetrate through the small hole of the mounting hole 11 under the action of the pressure.

Tensile testing machine drives fixing base 1 and reciprocates, the bottom of going up fixing base 1 can dismantle with perforation stick 3 and be connected, the side of the junction of perforation stick 3 and last fixing base 1 be provided with first screw 2, first screw 2 is used for fixed perforation stick 3.

The transparent cushion block 4 is a transparent disc, a cavity 12 is arranged in the middle of the disc, the cavity 12 is used for collecting the falling rubber gasket 9, and as shown in fig. 1, the cavity is a circular hole type.

Can dismantle the connection through second screw 7 between transparent cushion 4 and the transparent lead cover seat 5, second screw 7 runs through behind the transparent lead cover seat 5 with the screw hole cooperation of transparent cushion 4, just so can change the transparent lead cover seat 5 of different specifications, through the position of adjusting transparent cushion 4, make the axis and the aluminium of perforation stick 3 cover sample 6 on an axis, transparent cushion 4 can be fixed as the base, when perforation stick 3 exerts the force, can not cause the removal.

The diameter of the cavity 12 is larger than that of the mounting hole 11, so that the rubber gasket 9 falls into the cavity 12 after being separated from the aluminum cap 10.

The perforating rod 3 is provided with sizes of different specifications, and the mounting hole 11 of the transparent lead cover seat 5 is provided with sizes of different specifications.

The working principle is as follows: taking a tensile testing machine in the prior art as an example, the tensile testing machine comprises a servo motor, a servo frequency converter, a ball screw, a polished rod, a linear bearing, a synchronous belt and a synchronous wheel, wherein the servo motor drives the ball screw to rotate, so that a nut of the ball screw moves up and down, thereby completing compression and stretching actions, an upper fixed seat 1 is connected with a clamp of the tensile testing machine, a perforating rod 3 is arranged on the upper fixed seat 1, perforating rods 3 and transparent lead cover seats 5 with different sizes are selected according to the specification of an aluminum cover sample 6, the perforating rod 3 is fixed through a first screw 2, the transparent lead cover seats 5 and the transparent cushion blocks 4 are fixed through a second screw 7, after the aluminum cover sample 6 is fixed, the position of the transparent cushion blocks 4 is adjusted, the perforating rod 3 is concentric with a puncture hole 8 through visual inspection, the tensile testing machine is started through a speed regulating system, and the perforating rod 3 is driven to, when pressure is applied to the rubber gasket 9 by the perforating rod 3, the rubber gasket 9 moves in the aluminum cap 10, the load value on the tensile testing machine is read immediately, when the rubber gasket 9 falls off the aluminum cap 10 is observed through the transparent lead cover seat 5, then the load value in the process of applying the pressure is recorded, and the rubber gasket 9 is qualified products when the force value in the process of separating from the upper surface of the aluminum cap 10 is larger than 1.0N.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a detection apparatus for pen type syringe cushion adhesive force, includes fixing base (1) and perforation stick (3), last fixing base (1) be connected with tensile testing machine, perforation stick (3) set up on last fixing base (1), its characterized in that: still include transparent cushion (4) and transparent lead cover seat (5), transparent lead cover seat (5) set up in transparent cushion (4) top, the inside cavity of transparent cushion (4), be provided with mounting hole (11) on transparent lead cover seat (5), mounting hole (11) in can place aluminium lid sample (6), aluminium lid sample (6) include aluminium cap (10) and rubber gasket (9), aluminium cap (10) top be provided with puncture hole (8), mounting hole (11) support column aluminium cap (10) and rubber gasket (9) can pass through, rubber gasket (9) set up inside aluminium cap (10), perforation stick (3) and aluminium lid sample (6) coaxial line.

2. The device for detecting the adhesive force of the rubber pad of the pen-type injector according to claim 1, wherein: mounting hole (11) be the step hole, aluminium cap (10) and the macropore cooperation of mounting hole (11), the diameter of perforation stick (3) be less than the diameter of puncture hole (8), perforation stick (3) exert pressure to rubber gasket (9) after puncture hole (8), rubber gasket (9) can pass the aperture of mounting hole (11) under the pressure effect.

3. The device for detecting the adhesive force of the rubber pad of the pen-type injector according to claim 2, wherein: tensile testing machine drives fixing base (1) and reciprocates, the bottom and the perforation stick (3) of going up fixing base (1) can be dismantled and be connected, the side of the junction of perforation stick (3) and last fixing base (1) be provided with first screw (2), first screw (2) are used for fixed perforation stick (3).

4. The device for detecting the adhesive force of the rubber pad of the pen-type injector according to any one of claims 1 to 3, wherein: the transparent cushion block (4) is a transparent disc, and a cavity (12) is arranged in the middle of the disc.

5. The device for detecting the adhesive force of the rubber pad of the pen-type injector according to claim 4, wherein: the transparent cushion block (4) and the transparent lead cover seat (5) are detachably connected through a second screw (7).

6. The device for detecting the adhesive force of the rubber pad of the pen-type injector according to claim 5, wherein: the diameter of the cavity (12) is larger than that of the mounting hole (11).

7. The device for detecting the adhesive force of the rubber pad of the pen-type injector according to claim 6, wherein: the punching rod (3) is provided with sizes of different specifications, and the mounting hole (11) of the transparent lead cover seat (5) is provided with sizes of different specifications.