CN1108140A - Safety syringe reservoir of closing gate type - Google Patents

Abstract

The syringe is comprised of cylinder, central column, rubber piece, needle body, needle tube, gate cap and ruber seat, the upper part of the needle body has a cone angle to facilitate the coupling with the rubber piece, at the top part of the needle body there is a protrusion which is matched with the concave part of the gate cap, thus making the needle body elastic and smooth during insertion and withdrawal. It can be used for medical syringe.

Description

Safety syringe reservoir of closing gate type

The present invention relates to injector for medical purpose, refer to a kind of safety syringe reservoir of closing gate type especially, be meant especially a kind of simple in structure, use simple and easy, and needle body to enter or withdraw from the action of gate lid very certain, smooth and easy, have the safety syringe-drum of tight security.

Existing safety syringe reservoir of closing gate type, for a kind of gate that is provided with is closed automatically, syringe cylinder that needle point does not expose and deserted syringe for avoiding people's thorn and catching, its primary structure is to be provided with a rubber holder in a syringe inner bottom part, the top of this rubber holder is provided with a vertical chamber, be provided with an inclination chamber in this rubber holder under vertical chamber, be provided with the gate lid of a hard in this vertical chamber, cover in this gate and to be provided with a needle body, this needle body bottom is provided with needle tubing and runs through this gate lid, the inclination chamber is to this syringe, this syringe top is provided with a newel again, be provided with an advance and retreat rubber bodies in the newel bottom, this advance and retreat rubber bodies bottom is provided with a grapple chamber, when injecting liquid drug finishes, needle body can be oppressed and formerly be placed the gate lid in the vertical chamber to enter the inclination chamber, make the inclination chamber temporarily present a plumbness, when the advance and retreat rubber bodies with after needle body and needle tubing suction backward are in syringe, natural elasticity moment that this gate lid complies with promptly that the rubber holder had is recovered the heeling condition of primary dip chamber, so be parallel shape under the through hole at this gate lid center, if push hard into this newel again, needle point then is out of shape in order to avoid the needle tubing secondary uses because of hard gate lid stops, the disappearance of right this kind safety syringe-drum is: 1, its needle body does not have elasticity, so when being sticked in gate when covering, very easily produce the existing angle of sliding, and engaging is very difficult! 2, when needle body was squeezed into the gate lid, both were a tight fit, so set grapple chamber, advance and retreat rubber bodies bottom can't be grabbed out needle body swimmingly, needle tubing can't be entered in the syringe smoothly, and safety is relatively poor! 3, the top of its needle body does not have suitable gradient, so enter the action difficulty very of the grapple chamber of advance and retreat rubber bodies, if the employed strength deficiency of user, then can't smoothly both be engaged closely, influences the action of grapple needle body and needle tubing! From the above mentioned as can be known, in today of high risk infectious disease from spreading such as Biohazard Waste severe contamination and hepatopathy, AIDS, though existing above-mentioned syringe has the function of environmental protection of helping and medical safety, because of it has above-mentioned serious disappearance, its safety and practicality are had a greatly reduced quality, especially poor stability.

The objective of the invention is to exist above-mentioned deficiency to improve and overcome, thereby a kind of simple in structure, easy to operate, safe and reliable safety syringe reservoir of closing gate type is provided existing syringe.

Purpose of the present invention realizes like this: safety syringe reservoir of closing gate type, constitute by syringe, newel, advance and retreat rubber bodies, needle body, needle tubing, gate lid and rubber holder etc., rubber holder periphery is provided with a plurality of recesses and is sticked in the set protuberance of syringe inwall opposite position, its top is provided with a vertical chamber, it has an inclination chamber, have the fixing hole of straight-through this rubber holder bottom in the inclination chamber, be provided with one in the syringe bottom with respect to this fixing hole place and pass the hole; This newel bottom is provided with a barb and is sticked in the advance and retreat rubber bodies, is provided with a plurality of recesses in advance and retreat rubber bodies periphery and is sticked in the set protuberance of syringe upper inside wall opposite position; This gate lid system is positioned at this set vertical chamber in rubber holder top, and this needle tubing system is fixedly arranged on the bottom of needle body, it is characterized in that: this needle body system is one cylindrical; Its top is provided with a protuberance; This protuberance is an elliptic stereo, and a suitable angle of taper is established at its top; Down extend the breach at a suitable length and this needle body center of width crosscut by the top of this protuberance; This breach bottom is provided with a needle tubing hole, runs through the bottom of this needle body; This needle body outer surface in these breach both sides is provided with a plurality of salient points; And this gate lid system is a flat elliptic stereo, and the profile that its central top then cooperates this needle body to be provided with the salient point place is provided with a corresponding depressed part; Be provided with a needle tubing through hole in this depressed part center; This needle body is sticked in the depressed part of gate lid; Needle tubing then runs through vertical chamber, inclination chamber, fixing hole, pass the hole and stretch out outside this syringe; Be provided with grapple chamber with respect to this set protuberance profile in needle body top in this advance and retreat rubber bodies bottom; This bottom, grapple chamber is provided with flange.

Above-mentioned design gate caping end cooperates needle body to have the profile of salient point to be provided with corresponding depressed part, makes it have suitable telescopic resilience, makes the action that sticks into or withdraw from the gate lid more smooth and easy; The suitable angle of taper that protuberance top, needle body top is provided with helps being sticked in the advance and retreat rubber bodies; The depressed part of gate lid can make needle body implement in interior, can not produce and slide tiltedly, has overcome the deficiency that existing syringe exists thus, makes the present invention then reach simple in structure, easy to operate, safe and reliable purpose.

Below by drawings and Examples the present invention is described further again.

Fig. 1 is a needle body sketch map of the present invention;

Fig. 2 is gate lid sketch map of the present invention;

Fig. 3 is needle body of the present invention, needle tubing combination sketch map;

Fig. 4 makes up cross-sectional schematic for the present invention;

Cross-sectional schematic when Fig. 5 down advances for newel of the present invention;

Fig. 6 is that newel of the present invention up draws the cross-sectional schematic when sending;

Cross-sectional schematic when Fig. 7 down advances for newel of the present invention again;

1 syringe, 11,12 protuberances, 13 pass the hole, 2 rubber holders, 21 vertical chamber, inclination chambers 22,23,71 recesses, 24 fixing holes, 3 needle bodies, 31 protuberances, 32 breach, 33 needle tubing holes, 34 salient points, 4 gates lid, 41 depressed parts, 411 recessed edge, 42 through holes, 5 needle tubings, 6 newels, 61 barbs, 7 advance and retreat rubber bodies, grapple chambers 72,73 flanges, A medicinal liquid, D angle of taper.

Below do the drawing explanation: as shown in Figure 1, it is one cylindrical that this needle body 3 is, its top is provided with a protuberance 31, this protuberance 31 is a three-dimensional ellipse, a suitable angle of taper D is established at its top, down extend the breach 32 at a suitable length and these needle body 3 centers of width crosscut by the top of this protuberance 31, these breach 32 bottoms are provided with the bottom that this needle body 3 is run through in a needle tubing hole 33, and the outer surface in this needle body 3 of these breach 32 both sides is provided with a plurality of salient points 34 again.As shown in Figure 2, this gate lid 4 is a flat three-dimensional ellipse, and its central top then cooperates this needle body 3 shown in Figure 1 to be provided with the profile at salient point 34 places, and is provided with a corresponding depressed part 41, is provided with a needle tubing through hole 42 in these depressed part 41 centers.As shown in Figure 3, needle tubing 5 is fixedly arranged in the needle tubing hole 33 of this needle body 3, and its profile so is characterized in that the setting of this breach 32 as existing injection needle, make needle body 3 have appropriate telescopic resilience (as among Fig. 3 with shown in the finger compression).Shown in Fig. 1,2,4, gate lid 4 is arranged at the set vertical chamber 21 in top that a bottom one that is positioned at syringe 1 inside has the rubber holder 2 of natural elasticity, needle body 3 is to be sticked in the depressed part 41 of this gate lid 4, and salient point 34 is positioned at this set recessed edge 411 in depressed part 41 inside; Because the needle body 3 that is arranged so that of this breach 32 has telescopic resilience; So needle body 3 is sticked in the depressed part 41, and this depressed part 41 then can make needle body 3, gate lid 4 engage really with needle body 3 corresponding moulding, unlikely generation slip; 5 of needle tubings run through this vertical chamber 21, be positioned at the inclination chamber 22 of these vertical chamber 21 belows, the needle tubing fixing hole 24 that rubber holder 2 bottoms are set, the set needle tubing in syringe 1 bottom passes hole 13 and stretches out outside this syringe 1, these rubber holder 2 peripheries are provided with a plurality of recesses 23 and are sticked in the set protuberance 11 of syringe 1 inwall opposite position and unlikely slip, plug a newel 6 in syringe 1 top, these newel 6 bottoms are provided with a barb 61 and are sticked in the advance and retreat rubber bodies 71, these advance and retreat rubber bodies 7 peripheries are provided with a plurality of recesses 71 and are sticked in the set protuberance 12 of syringe 1 upper inside wall opposite position, make outside these advance and retreat rubber bodies 7 unlikely these syringes 1 that come off, be provided with the profile grapple chamber 72 of the protuberance 31 set with respect to this needle body 3 tops in these advance and retreat rubber bodies 7 bottoms, these 72 bottoms, grapple chamber are provided with flange 73, are filled with medicinal liquid A in the syringe 1.As shown in Figure 5, newel 6 is pushed when making advance and retreat rubber bodies 7 be packed in rubber holder 2 when finishing (that is injecting liquid drug), its grapple chamber 72 just can surround this protuberance 31, because a suitable angle of taper D* is established as shown in Figure 1 in protuberance 31 tops), the former action that can make protuberance 31 stretch into grapple chamber 72 is more smooth and easy, and this flange 73 is to resist in this protuberance 31 bottoms to constitute a barb seized condition, and extruding by this advance and retreat rubber bodies 7, gate lid 4 is clamp-oned in the inclination chamber 22 by vertical chamber 21, because this rubber holder 2 has natural elasticity, so when this gate lid 4 enters inclination chamber 22, this inclination chamber 22 can temporarily present one with syringe 1 perpendicular straight state.As shown in Figure 6, newel 6 is up drawn when sending, this grapple chamber 72 of mat, flange 73 is with this needle body 3, needle tubing 5 is drawn in the syringe 1, because the needle body 3 that is arranged so that of this breach 32 has telescopic resilience, so can pull it easily outside the gate lid 4, unlikely blocking, spur situations such as bad, when needle tubing 5 disengaging gates cover 4, this gate lid 4 is promptly complied with the natural elasticity that rubber holder 2 is had, moment is recovered the heeling condition of primary dip chamber 22, its through hole 42 therefore tilt and not with this fixing hole 24, pass hole 13 and connect, constitute the automatic closed condition of a gate, make needle tubing 5 unlikely exposing to outside the syringe 1.As shown in Figure 7, if when newel 6 down advanced once more, this needle tubing 5 promptly can touch this gate lid 4, because the material of this gate lid 4 has the hardness greater than needle tubing 5 hardness, needle tubing 5 thereby bending are so can avoid the secondary use of needle tubing 5.

Claims (1)

1, safety syringe reservoir of closing gate type, constitute by syringe, newel, advance and retreat rubber bodies, needle body, needle tubing, gate lid and rubber holder etc., rubber holder periphery is provided with a plurality of recesses and is sticked in the set protuberance of syringe inwall opposite position, its top is provided with a vertical chamber, it has an inclination chamber, have the fixing hole of straight-through this rubber holder bottom in the inclination chamber, be provided with one in the syringe bottom with respect to this fixing hole place and pass the hole; This newel bottom is provided with a barb and is sticked in the advance and retreat rubber bodies, is provided with a plurality of recesses in advance and retreat rubber bodies periphery and is sticked in the set protuberance of syringe upper inside wall opposite position; This gate lid system is positioned at this set vertical chamber in rubber holder top, and this needle tubing system is fixedly arranged on the bottom of needle body, it is characterized in that: this needle body system is one cylindrical; Its top is provided with a protuberance; This protuberance is an elliptic stereo, and a suitable angle of taper is established at its top; Down extend the breach at a suitable length and this needle body center of width crosscut by the top of this protuberance; This breach bottom is provided with a needle tubing hole, runs through the bottom of this needle body; This needle body outer surface in these breach both sides is provided with a plurality of salient points; And this gate lid system is a flat elliptic stereo, and the profile that its central top then cooperates this needle body to be provided with the salient point place is provided with a corresponding depressed part; Be provided with a needle tubing through hole in this depressed part center; This needle body is sticked in the depressed part of gate lid; Needle tubing then runs through vertical chamber, inclination chamber, fixing hole, pass the hole and stretch out outside this syringe; Be provided with grapple chamber with respect to this set protuberance profile in needle body top in this advance and retreat rubber bodies bottom; This bottom, grapple chamber is provided with flange.

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