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Testing device and testing method for sliding performance of injectors

A sliding performance and testing device technology, which is applied in the direction of measuring devices, testing of machine/structural parts, testing of mechanical parts, etc., can solve the problems of large gap, low accuracy of syringe testing, and low accuracy of test results, etc., and achieve the detection of structure Precise, precise test, accurate test results

Pending Publication Date: 2018-09-28
上海市医疗器械检测所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there is already a special test device for the sliding performance of syringes, but the existing test device cannot be tested accurately, and the test results are not accurate enough
When performing specific tests on the sliding performance testing device of the existing syringes, the syringes are all inverted, that is, the core rod is set downward. When testing, the core rod needs to be pushed from the bottom up to discharge the liquid in the syringe barrel. Here During the process, the static pressure generated by the liquid in the syringe barrel will have a certain impact on the sliding force of the core rod, resulting in low test accuracy of the syringe, and the test conditions used in the test method are quite different from the clinical conditions. lead to low accuracy of test results

Method used

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  • Testing device and testing method for sliding performance of injectors

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specific Embodiment 1

[0047] This specific embodiment discloses a preferred embodiment of a syringe sliding performance testing device, such as figure 1 As shown, it includes a bracket 1 and an adjustment bracket 2, the bracket 1 is provided with a first clamping mechanism 11 for installing the syringe 31 of the syringe, the adjustment bracket 2 is located above the bracket 1, and the adjustment bracket 2 is provided with a core for installing the syringe The second clamp mechanism 21 of the rod 32, and the distance between the adjustment frame 2 and the bracket 1 is adjustable. The syringe sliding performance testing device also includes a water tank 4, the water tank 4 is located on one side of the support 1, the syringe communicates with the water tank 4 through a connecting pipe 51, the first end of the connecting pipe 51 communicates with the cone of the syringe, and the second end communicates with the water tank. 4 connected. When carrying out a specific test, pressing down on the adjusting...

specific Embodiment 2

[0063] This specific embodiment discloses a method for testing the sliding performance of a syringe, comprising steps:

[0064] S10: Set the syringe vertically with the stem of the syringe facing up, install the barrel of the syringe through the first clamping machine, install the stem of the syringe through the second fixture mechanism, and the cone of the syringe passes through a connecting pipe and a water tank connected;

[0065] S20: adjust the relative positions of the water tank and the syringe so that the liquid level in the water tank is on the same plane as the axial midpoint of the syringe barrel;

[0066] S30: press down the core rod of the syringe, move the reference line of the core rod to the zero mark line of the syringe barrel, empty the air in the syringe barrel, and set the force value recorder to zero;

[0067] S40: Pull up the core rod of the syringe until the reference line of the core rod moves to the nominal scale capacity line on the syringe, and set ...

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Abstract

The invention discloses a testing device and a testing method for sliding performance of injectors. The testing device comprises a support, an adjusting frame, a water tank and a communicating tube. Afirst clamp mechanism for mounting needle cylinders of the injectors is arranged on the support. The adjusting frame is located above the support, and is provided with a second clamp mechanism for mounting core rods of the injectors. The space between the adjusting frame and the support is adjustable. The water tank is located on one side of the support. The first end of the communicating tube iscommunicated with conical heads of the injectors on the support. The second end of the communicating tube is communicated with the water tank. The testing device has high testing accuracy and high efficiency, and the testing method is simple, and easy to operate.

Description

technical field [0001] The invention relates to the technical field of syringe performance testing, in particular to a syringe sliding performance testing device and a testing method. Background technique [0002] The sliding performance of the syringe is a more important performance of the syringe, therefore, the sliding performance of the syringe must be tested before it goes on the market. In the prior art, there is already a special testing device for the sliding performance of the syringe, but the existing testing device cannot be tested accurately, and the test results are not accurate enough. When performing specific tests on the sliding performance testing device of the existing syringes, the syringes are all inverted, that is, the core rod is set downward. When testing, the core rod needs to be pushed from the bottom up to discharge the liquid in the syringe barrel. Here During the process, the static pressure generated by the liquid in the syringe barrel will have...

Claims

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Application Information

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IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 花松鹤
Owner 上海市医疗器械检测所