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Medical injector

A technology of a syringe and a sealing plug, applied in the field of medical injection tools, can solve the problems of difficult operation, large push-pull force of a push rod, soreness in the hands of medical staff, etc., so as to reduce the difficulty of operation, reduce the contact area, and reduce the difficulty of pushing and pulling Effect

Active Publication Date: 2020-11-06
YUHUAN HUANLIANG MEDICAL PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned syringe realizes injection or suction by pushing and pulling the needle plug, and the actual action point of injection or suction mainly depends on the sealing effect between the sealing ring and the inner wall of the sleeve. The outer circumference of the traditional sealing ring The side wall will be in full contact with the inner cylinder wall of the sleeve. Although this setting can effectively improve the sealing performance between the sealing ring and the sleeve, in actual practice, due to the effective contact between the sealing ring and the sleeve The large area leads to a large push and pull force actually required for the push rod. After long-term operation, the hands of the medical staff will be sore and the operation is difficult.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A medical syringe, see figure 1 , including a sleeve 1, a push rod 2, the two ends of the push rod 2 are respectively provided with a sealing plug 4 and a handle 3, the sealing plug 4 is located in the sleeve 1, and the material of the sealing plug 4 can be rubber. An annular sealing bead 5 is provided on the circumferential side wall of the sealing plug 4 , the material of the sealing bead 5 is consistent with that of the sealing plug 4 , and the sealing bead 5 is used to seal against the inner cylinder wall of the sleeve 1 .

[0048] Wherein, the push rod 2 includes two thin rod pieces 21, and the two thin rod pieces 21 cross each other to form a cross.

[0049] see figure 1 as well as figure 2 , the width of the thin rod sheet 21 near the handle 3 gradually becomes smaller, the center of the intersection of the two thin rod sheets 21 is concentric to the center of the handle 3, and the width of the thin rod sheet 21 is smaller than the width of the handle 3, so th...

Embodiment 2

[0051] Embodiment two: on the basis of embodiment one.

[0052] see image 3 as well as Figure 4 On the side wall of the sealing plug 4, there is an annular first air-tight covering sheet 6, and an annular first air-filling cavity 7 is formed between the first air-tight covering sheet 6 and the outer wall of the sealing plug 4. The end of the push rod 2 provided with the handle 3 is provided with an inflation hole 8 , the inflation hole 8 runs through the handle 3 , and the inflation hole 8 is internally threaded with an inflation plug 9 . The material of the inflation plug 9 itself can be selected from rubber to improve the sealing between the inner hole wall of the inflation hole 8 and the side wall of the inflation plug 9 .

[0053] see image 3 as well as Figure 4 , A first inflation channel 10 is provided in the sealing plug 4, and the first inflation channel 10 communicates with the first inflation cavity 7.

[0054] The push rod 2 is provided with a first inflata...

Embodiment 3

[0061] Embodiment three: a kind of use steps of the medical syringe shown in embodiment two:

[0062] Step 1: Medical personnel judge the injection pressure of the syringe required in the actual medical environment;

[0063] Step 2: According to the injection pressure required by the medical care environment judged in Step 1, the medical personnel do not push the sealing rubber sheet 19 and do not rotate the inflation plug 9;

[0064] Step 3: According to the injection pressure required by the medical care environment judged in step 1, the medical personnel push the sealing rubber sheet 19, and the sealing rubber sheet 19 completely covers the second inflatable aisle 17 without blocking the first inflatable aisle 11 , the medical personnel rotate the inflation plug 9, the inflation plug 9 squeezes the gas in the inflation hole 8 into the first inflation passage 11, the gas passes through the first ventilation hole 24 of the first insertion rod 12, and then enters through the f...

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Abstract

The invention provides a medical injector. The medical injector comprises a sleeve and a push rod, wherein a sealing plug and a handle are arranged at two ends of the push rod respectively, and annular sealing bulging ribs are arranged on the circumferential side wall of the sealing plug and used for abutting against the inner sleeve wall of the sleeve. Through the technical scheme, firstly, the sealing bulging ribs can be always tightly attached to the inner sleeve wall of the sleeve in a sealing manner so as to ensure that the sealing plug can realize effective push injection or suction whenthe push rod slides back and forth; secondly, the effective contact area between the sealing bulging ribs and the inner sleeve wall of the sleeve is smaller, the push-pull force required by the pushrod is relatively small, the pain of medical staff can be substantially relieved after long-term operation, and the operation difficulty is also effectively reduced.

Description

technical field [0001] The present invention relates to a medical injection tool, in particular, to a medical injector. Background technique [0002] A traditional syringe structure such as a Chinese utility model patent with a notification number of CN204033938U is a syringe. Its structure mainly includes a sleeve, and a needle plug is installed in the sleeve. The needle plug includes a push rod, a sealing ring, a handle, and the sealing ring and the handle are respectively Located at both ends of the push rod, the sealing ring is installed in the sleeve. By applying force to the handle, the push rod can push the sealing ring to perform sealing sliding along the inside of the sleeve. [0003] The above-mentioned syringe realizes injection or suction by pushing and pulling the needle plug, and the actual action point of injection or suction mainly depends on the sealing effect between the sealing ring and the inner wall of the sleeve. The outer circumference of the traditio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/178A61M5/31A61M5/315
CPCA61M5/178A61M5/31A61M5/31511
Inventor 杨育良吴小平
Owner YUHUAN HUANLIANG MEDICAL PLASTIC
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