CN2443738Y

CN2443738Y - Self-destruction syringe

Info

Publication number: CN2443738Y
Application number: CN 00221871
Authority: CN
Inventors: 练耕
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-22
Filing date: 2000-09-22
Publication date: 2001-08-22
Anticipated expiration: 2010-09-22

Abstract

The utility model relates to a disposable syringe comprises syringe needle and self-destruction needle tubing, and self-destruction needle tubing includes cylinder, push rod and self-destruction piston, and after the injection, unable syringe needle, needle tubing of wasing realize the requirement of self-destruction after the disposable injection completely.

Description

Self-destroyed syringe

This utility model relates to medical apparatus and instruments, particularly disposable syringe.

For preventing cross infection, disposable syringe is forced to use, but also has accidental will the use to patient again after the disposable syringe washing, causes the example of utmost point bad influence to patient and family members.This is because present disposable syringe does not damage through once using, and takes advantage of the occasion to utilize to the lawless person.

This utility model purpose is the syringe that reaches self-destruction after a kind of injection of design, the not possibility of utilizing once more.

This utility model is made up of syringe needle and self-destruction needle tubing, it is characterized in that self-destroyed syringe is made up of syringe needle and self-destruction needle tubing, and syringe needle comprises the needle body and the fixing needle handle of needle body, the needle handle inwall scrobicular ring that is provided with perpendicular to axial direction, and the needle handle outer wall is parallel to be axially arranged with groove; The self-destruction needle tubing comprises syringe, push rod, self-destruction piston, syringe is made up of the syringe needle erector, the liquid storage device that is provided with graduation mark and the spacing tearing ring that connect needle handle, the internal diameter of reservoir and syringe needle erector junction is less than the internal diameter of syringe needle erector, syringe needle erector outer wall is provided with the bulge loop that cooperates with needle handle inwall scrobicular ring, syringe needle erector inwall parallel axes is to establishing groove, and the cervical region of syringe needle erector is all established the strong groove that disappears outward; Spacing tearing ring is connected the reservoir oral area outside by point; The self-destruction piston is nested with at the push rod front end, and piston tightly overlaps part at push rod and is set to thin-walled, and the piston nose external form is a zigzag, its head to after establish by dark gradually shallow intake chamber, the sawtooth external diameter is slightly larger than the internal diameter of syringe needle erector.

During use, earlier with pinhead sleeve on the syringe needle erector, inwardly push away, the groove fit that makes needle handle is taken out liquid medicine again, clears air, is torn the spacing tearing ring that is connected outside the reservoir oral area, start injection off on the bulge loop of syringe needle erector, the promotion push rod is inside, sawtooth until piston nose enters the syringe needle erector fully, and injection finishes, and syringe needle is connected needle tubing extract.After this, as pulling out push rod again,, just make piston in its thin-walled place fracture because the serrated portion of piston is locked in the syringe needle erector; As desire to get syringe needle, and because of the sawtooth portion of piston makes the syringe needle erector outwards expand, and can't pull up syringe needle smoothly in the syringe needle erector, at this moment, as rotating syringe needle, then syringe needle erector cervical region will rupture.

This product is reasonable with new structure, and technology is simple, is easy to make, and reaches the requirement of self-destruction after the disposable injection simultaneously.

In conjunction with the accompanying drawings, further specify embodiment.

Fig. 1 is this utility model structural representation.

Fig. 2 is the syringe needle enlarged drawing;

Fig. 3 is the A-A cutaway view;

Fig. 4 is the syringe needle cutaway view;

Fig. 5 is the syringe partial enlarged drawing;

Fig. 6 is the B-B cutaway view;

Fig. 7 is the syringe cutaway view;

Fig. 8 is piston and push rod partial enlarged drawing;

Fig. 9 is the C-C cutaway view.

As shown in Figure 1, this utility model is made up of syringe needle 1, syringe 2, piston 3, push rod 5, spacing tearing ring 4, and tearing ring 4 is connected the oral area outside of syringe 2 by point.

Shown in Fig. 2,3,4, syringe needle 1 is made of needle body 6, needle handle 7 with unified specification setting.Needle body 6 closely cooperates with the front portion of needle handle 7, at the oral area near needle handle 7, in its inwall scrobicular ring 9 of establishing perpendicular to axial direction.Be symmetrical arranged four grooves 8 in the outer of needle handle 7, groove 8 is parallel and axial.

Shown in Fig. 5,6,7, syringe 2 comprises the syringe needle erector 10 of supporting needle, indicates the liquid storage device 11 of graduation mark.The outer wall of syringe needle erector 10 is provided with the bulge loop 12 that cooperates with needle handle 7, and is parallel and axial at outer wall, uniform four spilling water grooves 13 in left side to the end of bulge loop 12, and at the inwall of syringe needle erector 10, parallel and axial uniform four grooves 14.Four of the cervical region arranged outside that syringe needle erector 10 is connected with the liquid storage device 11 strong groove 15 that disappears, syringe needle erector 10 is established pistons end zigzag keeper 19 with the junction of liquid storage device 11.

Shown in Fig. 8,9, piston 3 is nested with in the front portion of push rod 5, and special in the ring groove of push rod 5, piston 3 16 places on base are thin-walled design.

The front portion of piston 3 is a zigzag 18, its external diameter is slightly larger than the internal diameter of syringe needle erector 10, in the zigzag district of piston 3, offer two intake chambers 17 in the outer wall symmetry, play the elastic shrinkage effect simultaneously, be convenient to enter in the keeper 19 of syringe needle erector 10 and liquid storage device 11 junctions, intake chamber 17 from the beginning to after gradually shallow.

Claims

1, self-destroyed syringe is characterized in that self-destroyed syringe is made up of syringe needle and self-destruction needle tubing, and syringe needle comprises the needle body and the fixing needle handle of needle body, and the needle handle inwall scrobicular ring that is provided with perpendicular to axial direction, needle handle outer wall are parallel to and are axially arranged with groove; The self-destruction needle tubing comprises syringe, push rod, self-destruction piston, syringe is made up of the syringe needle erector, the liquid storage device that is provided with graduation mark and the spacing tearing ring that connect needle handle, the internal diameter of reservoir and syringe needle erector junction is less than the internal diameter of syringe needle erector, syringe needle erector outer wall is provided with the bulge loop that cooperates with needle handle inwall scrobicular ring, syringe needle erector inwall is parallel to axially establishes groove, and the cervical region of syringe needle erector is all established the strong groove that disappears outward; Spacing tearing ring is connected the reservoir oral area outside by point; The self-destruction piston is nested with at the push rod front end, and piston tightly overlaps part at push rod and is set to thin-walled, and the piston nose external form is a zigzag, its head to after establish by dark gradually shallow intake chamber, the sawtooth external diameter is slightly larger than the internal diameter of syringe needle erector.

2,, it is characterized in that outer wall at described syringe needle erector is parallel to axially to establish the spilling water groove that the spilling water groove starts from syringe needle erector end, ends in bulge loop according to the described self-destroyed syringe of claim 1.