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Safety injection needle assembly and safety syringe

A technology of injection needle and safety type, which is applied in the field of medical equipment, and can solve the problem of accidental injury and accidental injury by the needle tube of the injection needle when it is set back on the outer wall of the needle seat; when the syringe is ready to use, the injection needle passes through its needle The inner wall of the needle seat hole of the seat is sleeved and fixed on the cone head of the syringe to achieve the effect of preventing accidental injury, reasonable structure and good safety

Inactive Publication Date: 2004-11-17
陈嘉农
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the ordinary injection needles that are matched with ordinary syringes on the market are composed of a needle tube, a connecting part and a needle seat. The needle tube is fixed by bonding the connecting part to the inner wall of the needle seat. The sheath on the outer wall, the function of the sheath is to protect the needle tube of the injection needle before the syringe is used, and to prevent the needle tube from accidentally hurting people; when the syringe is ready to be used, the injection needle is sleeved through the inner wall of the needle seat hole of the needle seat It is fixed on the cone head of the syringe; in addition, there is a syringe with a different structure from the ordinary syringe. In this syringe, the needle tube is a part of the syringe, and the needle tube is fixed with the cone head and the outer jacket of the syringe. The sheath is The sleeve is fixed on the outer wall of the cone head of the syringe; when the user uses the syringe, he must first remove the sheath, and then basically discard the sheath casually. The sleeve is put back on the outer wall of the needle seat again; or the sheath is put back on the outer wall of the cone head of the above-mentioned syringe which is different from the structure of the ordinary syringe, and the needle tube of the injection needle will be caused if you are not careful. Accidental injury may sometimes lead to some serious consequences, such as the needle tube of the injection needle still carrying certain infectious viruses

Method used

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  • Safety injection needle assembly and safety syringe
  • Safety injection needle assembly and safety syringe
  • Safety injection needle assembly and safety syringe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Referring to Fig. 1 to Fig. 8, the materials used in the safety injection needle assembly of this embodiment comply with national standards. The safety type injection needle assembly of the present embodiment has a safety sheath 10 and an injection needle 40; the safety sheath 10 is an integral part composed of a base 11, a shield 12 and a hinge mechanism 20; the base 11 of the safety sheath 10 is designed There are positioning holes 111; the hinge mechanism 20 of the safety sheath 10 is arranged between the base 11 and the shield 12, and the base 11 is connected with the shield 12 through the hinge mechanism 20; the opposite of the shield 12 of the safety sheath 10 The position on one side of the hinge mechanism 20 is an open position; the hinge mechanism 20 has an overturn support part 30, and the shield 12 of the safety sheath 10 can be rotated relative to the axial centerline of the injection needle 40 through the overturn support part 30 of the hinge mechanism 20. ...

Embodiment 2

[0046] See Figures 9 to 13, the hinge mechanism 20 of the safety injection needle assembly of this embodiment is composed of a leaf spring 23 and two hinges 24, the hinges 24 are arranged on both sides of the leaf spring 23, and each hinge 24 is provided with a turning part 241 and fixed portion 242, the upper section of the turning portion 241 of each hinge 24 and the top of the leaf spring 23 are connected with the shield 12, the root of the fixed portion 242 of each hinge 24 and the leaf spring 23 is connected with the base 11, and the leaf spring 23 and the roots of the turning parts 241 of the hinges 24 jointly constitute the turning support part 30 .

[0047] See Figure 9 and Figure 13, the use process of the safety injection needle assembly of this embodiment is basically the same as that of Embodiment 1, the safety injection needle assembly is sleeved and fixed on the inner wall of the positioning hole 111 of the base 11 of the safety sheath 10 On the conical head 51 o...

Embodiment 3

[0050] See Fig. 14 to Fig. 18, the hinge mechanism 20 of the safety injection needle assembly of this embodiment is composed of a hinge 24 and two leaf springs 23, the leaf springs 23 are arranged on both sides of the hinge 24, and the hinge 24 is provided with a turning part 241 And fixed portion 242, the upper section of the turning portion 241 of hinge 24 and the top of each leaf spring 23 are connected with shield 12, the root of fixed portion 242 of hinge 24 and each leaf spring 23 is connected with base 11, the hinge 24 The root of the turning portion 241 and the roots of each leaf spring 23 together constitute the turning support part 30 .

[0051] See Fig. 14, Fig. 15 and Fig. 18, when the turning part 241 of the hinge 24 is in contact with the fixed part 242, the contact plane is parallel to the axial center line of the injection needle 40; the reason why the elastic force of the leaf spring 23 makes the shield 12 turn When the open position is reached, the angle of o...

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Abstract

The invention relates to a safety type injection needle assembly and safety syringe, wherein the safety type injection needle assembly includes a safety sleeve and an injection needle, the safety sleeve is integrated by a base, a shield and a hinge device. A locating hole is arranged on the base of the safety sleeve, the hinge device of the safety sleeve is arranged between the base and the shield.

Description

technical field [0001] The invention belongs to the field of medical equipment. Background technique [0002] At present, the ordinary injection needles that are matched with ordinary syringes on the market are composed of a needle tube, a connecting part and a needle seat. The needle tube is fixed by bonding the connecting part to the inner wall of the needle seat. The sheath on the outer wall, the function of the sheath is to protect the needle tube of the injection needle before the syringe is used, and to prevent the needle tube from accidentally hurting people; when the syringe is ready to be used, the injection needle is sleeved through the inner wall of the needle seat hole of the needle seat It is fixed on the cone head of the syringe; in addition, there is a syringe with a different structure from the ordinary syringe. In this syringe, the needle tube is a part of the syringe, and the needle tube is fixed with the cone head and the outer jacket of the syringe. The s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/178A61M5/32
Inventor 陈嘉农邹志尚
Owner 陈嘉农
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