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Block self locking and destructing safety type syringe

A safe, syringe technology, applied in the field of medical devices, can solve the problems of difficult to achieve blockage, cannot be used normally, and difficult to process, and achieve the effects of reducing residual flow, good effect, and simple process

Inactive Publication Date: 2005-06-29
陈嘉农
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of making the plug and piston of the above-mentioned syringe integrated is relatively difficult, the production yield is low, and the cost is high. When in use, due to the good elasticity of the rubber, the cut at the rear end of the plug is not easy to break, and it is difficult to achieve the plugging effect. ; If it is bonded, it is difficult to accurately locate the plug at the center of the piston, because the bonding area is small, so it is easy to fall off when not in use, and cannot be used normally

Method used

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  • Block self locking and destructing safety type syringe
  • Block self locking and destructing safety type syringe
  • Block self locking and destructing safety type syringe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] See Figure 1 to Figure 8 , The material used in the syringe of this embodiment complies with the national standard. The syringe of this embodiment has a conical head 10, a mandrel 20 and a jacket 30; the conical head 10 has a conical head hole 11, and the conical head 10 and the jacket 30 are integrated; the mandrel 20 is an integral piece with a top 21 and a shaft 23 The syringe also has a blocking body 40, the blocking body 40 is provided with a blocking portion and a positioning portion 42, the blocking portion of the blocking body 40 can be matched with the taper hole 11 or the blocking portion of the blocking body 40 can be connected with the blocking cavity 31 of the overcoat 30 matched; the top 21 of the core rod 20 is provided with an elastic sealing structure 50; see figure 1 , Figure 4 , Figure 5 and Figure 6 , the elastic sealing structure 50 of the top 21 of the core rod 20 is composed of an elastic groove 51 and a sealing ring 52, the elastic sealin...

Embodiment 2

[0071] See Figure 9 to Figure 10 The opening direction of the elastic groove 51 of the elastic sealing structure 50 of the syringe of the present embodiment is upward; the liquid guide hole on the anti-stab part 12 is set eccentrically; the syringe of the present embodiment has the positive effect of strengthening the blocking and self-locking injection passage. Effect: see Figure 9 and Figure 10 , the cone head hole 11 is a stepped hole, and the plugging portion 41 of the plugging pin 40 is provided with a closed boss 44, and the outer diameter of the joint between the sealed boss 44 and the stepped hole section of the cone head hole 11 is larger than that of the cone head The inner diameter of the stepped hole section of hole 11 is 0.5 mm; see Figure 10 , after the injection is completed, the blocking part 41 and the sealing boss 44 cooperate with and seal the stepped hole section of the taper hole 11, so as to achieve the purpose of strengthening the blocking and self...

Embodiment 3

[0073] See Figure 11 to Figure 13 , the needle tube 71 of the syringe of the present embodiment is fixed with the cone 11 and the overcoat 30 as one piece; the inner wall of the cone hole 11 does not have the anti-poking part 12; the sealing effect of the elastic sealing structure 50 of the syringe of the present embodiment is remarkable, and has Reduce the effect of resistance when pushing and pulling the core rod 20: see Figure 11 and Figure 13 , the elastic sealing structure 50 of the top 21 of the core rod 20 is composed of an O-ring 53 and a sealing ring positioning part 54; the sealing ring positioning part 54 of the elastic sealing structure 50 is integrated with the top 21 of the core rod 20; the elastic sealing structure The O-shaped sealing ring 53 of 50 is set and fixed on the sealing ring positioning part 54; the outer wall of the O-shaped sealing ring 53 can be matched with the inner wall of the outer casing 30, and the outer wall of the O-shaped sealing ring ...

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Abstract

The invention provides a self-destruction type syringe, which comprises a tapered head, a core rod and a casing, wherein the tapered head is provided with a tapered head hole, the tapered head is integrated with the jacket, the core bar is an integrated member with a top member and a rod body, the syringe also includes a clogging member, the clogging member is provided with a clogging portion and a positioning portion, the top of the core rod is provided with a resilient sealing structure, the resilient sealing structure on the top of the core rod comprises a resilient slot and a sealing ring, the resilient sealing structure and the top of the core rod is an integrated member, the top of the core rod is provided with a locating vertical hole, the positioning portion of the clogging member is located in the locating vertical hole, the locating vertical hole on the top of the core rod is a through-hole, the clogging member is a clogging pin of pin shape structure, the upper end of the clogging pin is a clogging portion.

Description

technical field [0001] The invention relates to a self-destruct syringe, which belongs to the field of medical instruments. Background technique [0002] Chinese patent No. is 00219356.6, and the utility model patent description entitled "Blocking Type Disposable Syringe" discloses a syringe. The syringe includes a jacket, a core rod, and a piston; the jacket has a cone head, the cone head is provided with a cone head hole, and an annular boss is arranged in the cone head hole; the front end of the piston is provided with a plug, and the rear end of the plug has a cutout. There is a core bone in the center; the piston is connected with the plug, which can be made in one piece or bonded; the plug has a taper, and the front end is a small head; the inner wall of the annular boss is provided with at least one axial guide groove; A limit piece is provided at the rear of the rod. The process of making the plug and piston of the above-mentioned syringe integrated is relatively d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/50
Inventor 陈嘉农邹志尚
Owner 陈嘉农
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