CN2364900Y

CN2364900Y - Protective treatment safety injector

Info

Publication number: CN2364900Y
Application number: CN 99210592
Authority: CN
Inventors: 赖弘基
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-07
Filing date: 1999-05-07
Publication date: 2000-02-23
Anticipated expiration: 2009-05-07

Abstract

The utility model relates to a safety syringe. The lower part of the syringe is a conical cylinder in which a convex ring and a groove are arranged, wherein the convex ring is abutted against the maximum diameter segment of a connector, and the groove is engaged with a rubber ring of the connector which is orderly provided with a fixed point, two anti-skid points, a groove, the maximum diameter segment and an umbrella-shaped hat from the outer edge of the lower end, wherein the anti-skip points are fixed in the syringe; the periphery of the groove is sheathed with the rubber ring; the maximum diameter segment is abutted against the convex ring in the conical cylinder; the umbrella-shaped cap is arranged in a piston. Thus, an injection needle after injection can not prick medical care persons or cleaning persons.

Description

But the safety injector of protective treatment

This utility model relates to a kind of safety injector.

Present syringe, after having injected, medical personnel, cleaner or the like is occurred repeatedly by the acupuncture treatment incident, and some entry needles are arranged is that (hepatitis C bacillicarrier or the like is by blood for AIDS, hepatitis B for the epidemic victim, body fluid is infectious) used pin, therefore, nearly all people is afraid of to be pricked by pin.In the U.S., government, insurance institution and medical institutes 1 year be because prevent acupuncture treatment, and payment is by the acupuncture treatment medical personnel, and cleaner's reimbursement for expenses 1 year is up to 3,500,000,000 U.S. dollars, though do not have so statistics in China, the use of safety injector is the common wishes of medical personnel already.

But the purpose of this utility model provides a kind of safety injector of protective treatment, and it is after having injected, and toward post-tensioning, deflection automatically in entry needle is pulled to injection tube adds and is pressed on the push rod with push rod, and entry needle is crooked and destroyed on the circular cone tube of injection tube.

The purpose of this utility model is achieved in that it comprises injection tube, adapter, plug, push rod and entry needle, the fixing entry needle of adapter one end wherein, wherein adapter is inserted the circular cone tube of injection tube, insert on the umbrella hat of push rod in the hole, plug lower end, entry needle is connected with the adapter tail end with its pedestal, it is characterized in that: the injection tube Lower Half is the circular cone tube, be provided with a bulge loop and an annular recess in this circular cone tube, and this bulge loop stops the maximum gauge section of adapter, and the rubber ring of groove and adapter is bitten, circular cone tube inside below also has the afterbody bulge loop of circular cone tube, two nodes; Connection device has hollow mesopore, from its lower end outer rim and on have two fixing points, two on-slip point, a groove, maximum gauge section in regular turn, two side holes and umbrella hat, wherein the on-slip point is stuck in the middle of afterbody bulge loop and the groove, the groove periphery of adapter is nested with rubber ring, and the maximum gauge section of adapter is withstood the bulge loop in the circular cone tube; Plug has hole, lower end and hole, upper end, and wherein the hole, lower end combines with the umbrella hat of push rod, and the hole, upper end is provided with an inclined groove and a sharp protruding thing, outside the hole, upper end of outstanding plug; The push rod bottom has a umbrella hat and combines with hole, plug lower end.

Because adopt such scheme: it infiltrates O type cushion rubber from the circular cone tube bottom in order to stop air; And be provided with an inclined groove and a sharp protruding thing in the hole, plug lower end, outside the outstanding plug of the protruding thing of this point,, make medicinal liquid can fill with inside grooves and survival gas not in order to destroy the surface tension of medicinal liquid; Entry needle after the use is destroyed in syringe, can not stab medical personnel or cleanup crew.

Below in conjunction with drawings and Examples this utility model is further specified.

Fig. 1 this utility model exemplary embodiments entry needle and adapter are thrown off sketch map.

Fig. 2 this utility model exemplary embodiments injection tube generalized section.

Fig. 3 this utility model exemplary embodiments adapter outside drawing.

Fig. 4 this utility model exemplary embodiments adapter cross-sectional schematic.

Fig. 5 this utility model exemplary embodiments piston cross-sectional schematic.

Fig. 6 this utility model exemplary embodiments push rod outside drawing.

Fig. 7 this utility model exemplary embodiments entry needle outside drawing.

Fig. 8 this utility model exemplary embodiments needle cover outside drawing.

Injection tube user mode figure during the injection of Fig. 9 this utility model exemplary embodiments.

The state diagram of Figure 10 this utility model exemplary embodiments entry needle post-tensioning deflection in injection tube.

The state diagram of Figure 11 this utility model exemplary embodiments entry needle bending in injection tube.

Among the figure:

1, injection tube, 11 straight cylinder portions, 12 circular cone tubes, 122 afterbody bulge loops, 123 bulge loops, 124 grooves, 125 nodes, 2 adapters, 21 mesopores, 22 fixing points, 23 on-slip point, 24 grooves, 24a rubber ring, 25 maximum gauge sections, 26 umbrella hats, 27 side holes, 3 plugs, hole, 31 lower end, hole, 32 upper end, 321 inclined grooves, 322 sharp protruding things, 4 push rods, 41 umbrella hats, 42 tops, 5 entry needles, 51 pedestals, 52 syringe needles, 53 needle guards.

Present embodiment comprises injection tube 1, adapter 2, and piston 3, push rod 4 and entry needle 5, shown in Fig. 1-11, wherein:

Injection tube 1 mainly contains two parts, and the first half is an interior straight cylinder portion 11, can be used for loading medicinal liquid, and the latter half is a circular cone tube 12.First half top is the protruding things in two symmetrical semicircle angles, with handled easily.Be positive circular in this injection tube, the axle center is in the middle of tube.Circular cone tube 12 walls of Lower Half are thick than the first half, in order to increasing hardness, so that entry needle 5 is pulled to injection tube 1 in and when wanting plus-pressure destruction, can puncture injection tube 1 and cause accident.Circular cone tube 12 with the internal diameter of straight cylinder portion 11 junctions less than the first half, make it after injection, during toward post-tensioning, entry needle 5 can not skid off circular cone tube 12 because of less internal diameter blocks with push rod 4.These circular cone tube 12 inside are afterbody bulge loop 122 bottom, its diameter slightly equates with pedestal 51 external diameters of entry needle 5, make pedestal not loosening when injection, two nodes 125 are in order to snap connector 2, and there are a bulge loop 123, the interior afterbody bulge loop 122 of circular cone tube 12 in the middle part in circular cone tube 12, its diameter slightly equates with pedestal 51 external diameters of entry needle 5, two nodes 125 are in order to snap connector 2, and the bulge loop 123 of circular cone tube 12 fixes it in order to block adapter 2 maximum gauge places.There is a groove 124 at circular cone tube 12 middle parts, with the O shape rubber ring 24a of snap connector 2, make its tightr injection tube 1, two node 125 that touch in order to stop O type rubber ring 24a, it are not glided, as shown in Figure 1, 2.

Adapter 2 is another bigger breakthrough in the present embodiment, and its purpose is this adapter 2 is fixed in the circular cone tube on 12, and medical personnel are as long as be fixed on entry needle 5 on adapter 2 tail ends.Its mesopore 21 runs through head to afterbody, as shown in Figure 4, and communicates with entry needle 5, and medicinal liquid injects entry needle thus, its axle center and injection tube 1 overlaid, and adapter 2 lower end designs fix points 22 make needle stand screw-threaded coupling.Other has two on-slip points 23 to be fixed in the circular cone tube 12 of injection tube 1.One groove 24 is arranged on the on-slip point 23, in order to O shape rubber ring 24a, as shown in Figure 3, insert the groove 124 in the circular cone tube 12, adapter 2 maximum gauge sections 25 are withstood the bulge loop 123 in the circular cone tube 12 of injection tube 1, and adapter 2 tops are the umbrella hat 26 that the hole is arranged, in order to be embedded in the hole, upper end 32 of plug 3 after the injection, push rod 4, adapter 2, entry needle 5 link together.Two side holes 27 resistance when reducing to inject is shown in Fig. 1,3 and 4.

Plug 3 is in order to sealing injection tube 1, and push rod 4 is fixed in its hole, lower end 31, is provided with inclined groove 321 in hole, upper end 32, outside the hole, upper end 32 of bottom angled about 5 °～15 ° and sharp protruding thing 322 outstanding plugs 3.The protruding thing 322 of this point is to destroy the surface tension of medicinal liquid, make hole, the plug 3 upper end 32 internal energy medicinal liquids of filling with, do not allow gas residual in the hole, upper end 32 of plug 3, after injection, the umbrella hat 26 of adapter 2 is bitten in hole, plug 3 upper end 32, behind entry needle 5 extraction human bodies, with push rod 4 past post-tensionings, adapter 2 and entry needle 5 are pulled in the injection tube 1, and the inclined groove 321 in the hole, upper end 32 makes adapter 2 entry needles 5 deflections.Less because of circular cone tube 12 bottom diameters of injection tube 1, entry needle 5 can not glide.Shown in Fig. 1,5.

Push rod 4 is inhaled medicinal liquid to injection tube 1 in order to draw, and injecting liquid drug is gone in the human body.Push rod 4 bottoms are a umbrella hat 41 in order to connect plug 3 and to snap in the hole, lower end 31, and push rod 4 axle center and injection tube 1 axle center unite two into one.The top 42 of push rod 4 can make things convenient for dilazep push rod 4.Shown in Fig. 1,6.

Screw thread is arranged in entry needle 5 pedestals 51, in order to link together with adapter 2, pedestal 51 bottoms and syringe needle 52 inside are hollow, and medicinal liquid is passed through; Entry needle 5 also has a needle guard 53, entangles entry needle 5, in order to avoid entry needle 5, wears out packaging bag and hurts sb.'s feelings.Shown in Fig. 1,7 and 8.

When using the present embodiment syringe, earlier entry needle 5 is fixed on the adapter 2, extract medicinal liquid, medicinal liquid is injected human body.After injection was finished, the vertical umbrella hats 26 of adapter 2 embedded in the holes, plug 3 upper end 32, this moment entry needle 5, adapter 2, plug 3 and push rod 4 link together.Toward post-tensionings, adapter 2 is being with entry needle 5 only to be drawn in the injection tube 1 and is being deflected condition, shown in Fig. 9-11 with push rod 4.

Stress on the entry needle 5 of deflected condition down can be pressurizeed on the push rod 4 crooked, because of circular cone tube 12 oncuses of injection tube 1 bottom and tube wall footpath less than injection tube 1, entry needle 5 can not skid off, after the pressurization, entry needle 5 bendings.Form disposible safety syringe worthy of the name.

Claims

1, but a kind of safety injector of protective treatment comprises injection tube (1), adapter (2), plug (3), push rod (4) and entry needle (5), the fixing entry needle (5) of adapter (2) one ends wherein, wherein adapter (2) is inserted the circular cone tube (12) of injection tube (1), insert in plug (3) hole, lower end (31) on the umbrella hat (41) of push rod (4), entry needle (5) is connected with adapter (2) tail end with its pedestal (51), it is characterized in that: injection tube (1) Lower Half is circular cone tube (12), be provided with a bulge loop (123) and an annular recess (124) in this circular cone tube (12), and this bulge loop (123) stops the maximum gauge section (25) of adapter (2), and groove (124) is bitten with the rubber ring (24a) of adapter (2), circular cone tube (12) inside below also has the afterbody bulge loop (122) of circular cone tube (12), two nodes (125); Adapter (2) has hollow mesopore (21), from its lower end outer rim and on have two fixing points (22), two on-slip point (23), a groove (24), maximum gauge section (25) in regular turn, two side holes (27) and umbrella hat (26), it is middle with groove (124) that wherein on-slip point (23) is stuck in afterbody bulge loop (122), groove (24) periphery of adapter (2) is nested with rubber ring (24a), and the maximum gauge section (25) of adapter (2) is withstood the bulge loop (123) in the circular cone tube (12); Plug (3) has hole, lower end (31) and hole, upper end (32), and wherein hole, lower end (31) combine with the umbrella hat (41) of push rod (4), and hole, upper end (32) are provided with an inclined groove (321) and a sharp protruding thing (322), outside the hole, upper end (32) of outstanding plug (3); Push rod (4) bottom has a umbrella hat (41) and combines with plug (3) hole, lower end (31).