CN202497553U

CN202497553U - Painless injector

Info

Publication number: CN202497553U
Application number: CN2012201471802U
Authority: CN
Inventors: 宣建民
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-05
Filing date: 2012-04-05
Publication date: 2012-10-24
Anticipated expiration: 2022-04-05

Abstract

The utility model relates to a disposable painless injector capable of performing painless intramuscular injection. The painless injector comprises a holding part, a contacting part, a disposable injector, tension springs and switches. The painless injector is composed of the holding part and the contacting part; the injector is arranged at the middle part of the holding part; grooves are arranged at the two sides of the holding part; switches, switching bars, spring columns and the tension springs are arranged in the grooves; switch covers are arranged outside the grooves; and an injection hole is arranged at the bottom end of the contacting part. The disposable painless injector has beneficial effects that: the injector needle head rapidly punctures the skin and reaches proper muscle depth by using the power of the tension springs, thereby achieving the painless effect, the medical technique routine of the painless intramuscular injection is met, the pain caused by manual operation is avoided, the painless injector is suitable for the disposable injector produced based on the national standard, and cannot be reused again, so the sterile technique requirement and the injection depth requirement are reached, the crossed infection caused by skin contact is avoided, the structure is reasonable, the operation is simple, the painless intramuscular injection is carried on any person rapidly, and the painless injector is especially suitable for preventive injection of children.

Description

Painless syringe

Technical field

This utility model relates to a kind of passive elastic force that utilizes extension spring, makes the syringe that is positioned at the grip part can quick collinear motion, the syringe that carries out the intramuscular injection of painless property.

Background technology

Intramuscular injection is that people make one of usual way of medicament; Medicine makes drug slow absorb the purpose that reaches treatment, except the pain that causes because of some drugs self through the intramuscular of injector to inject to the human body suitable position; Owing to the pain that the technical operation reason causes is very common; Agonizing by the injector, medical personnel that especially just started working and part are engaged in the personnel of medical and nursing work in the rural area, and the meeting that has causes by the injector has a fainting spell during acupuncture treatment.The technical key point of painless property intramuscular injection is two fast one slow, and inserting needle speed wants fast when promptly injecting, and it is slow that injection liquid speed is wanted, and pulls out needle speed and wants fast, and many medical and nursing work personnel technical key point of inserting needle on top of arranged at present, and this is the main cause that causes pain.The technical key point of painless property intramuscular injection inserting needle is: the syringe that medicinal liquid will be housed during injection vertically places by top, injector injection site disinfectant skin, mainly utilizes wrist power, and arm strength is auxiliary; Make the rapidly vertical prick skin of syringe needle, enter into intramuscular, stop after reaching appropriate depth; Like this; Because sharp syringe needle and inserting needle fast make inject time extremely short, will not had the sensation of pain by the injector.During inserting needle syringe be not orthogonal to skin or (with) speed slow or (with) reason such as vibration is arranged, all can cause by injector's pain; When at present syringe was applied to the injection of child's preventive injection, because the reason of children physique, the speed of inserting needle must be slowly, will pain, cause that the child cries and screams.The structure of utility model patent ZL200620159392.7 and ZL200820111877.8 is not suitable for disposable use; The manufacturing process of ZL201020616719.5 and ZL201120063735.0 is slower, influences manufacturing cost.

Summary of the invention

In order to achieve the above object, overcome technological deficiency, being constructed as follows of this utility model:

An aspect according to this utility model provides a kind of painless syringe, and it comprises: grip part, contact site, syringe, switch, spring and switch rod.Wherein, the lower end of grip part links to each other with the upper end of contact site, and there is annular muscle the junction; There is pushing assisted plate the both sides of upper end, grip part; Be furnished with syringe in the grip part; There is the groove of top opening the both sides, grip part; The pushing assisted plate of the switch portion of injector syringe upper end is non-circular cylinder, and the pushing assisted plate of opposite side extension spring portion is the tetragonal body that spring stack is arranged; Syringe the pushing assisted plate of the switch-side switch rod through bouncing plate is arranged be arranged in the grip part sidewall and have the switch of locating hole, switch groove, otch and platform to link to each other; The sidewall of grip part below sidewall above the switch opening and switch opening be not on same plane; Syringe links to each other with the corresponding spring stack in groove lower end through extension spring at the spring stack of the pushing assisted plate of extension spring side; The groove of the grip part of extension spring portion is towards a side opening, and open outer side links to each other with the plate of remaining silent through the impression hinge; There is the switch eaves of vertical direction in the outside of switch opening; The switch eaves is furnished with switch cover outward; All parts are all aseptic, all are sealed in the aseptic medical outer package.

The beneficial effect of this utility model is: utilize extension spring to be power, make syringe needle pass skin rapidly, arrive the muscle proper depth; Thereby painless, the medical skill that meets painless intramuscular injection is conventional, has got rid of the pain that produces because of the manual operation reason; Be applicable to the syringe of producing by national standard, can not reuse, can reach aseptic technique requirement and injection depth requirement; Can avoid the generation of contact skin cross infection, rational in infrastructure, easy and simple to handle; Can make anyone carry out the intramuscular injection of painless property rapidly, the injection of especially suitable child's preventive injection.

Description of drawings

Fig. 1 is a front view behind the painless syringe.

Fig. 2 is the painless syringe vertical view.

Fig. 3-1 is a switch rod front view; Fig. 3-2 is a switch rod side view.

Fig. 4-1 is a syringe extension spring portion side view; Fig. 4-2 is a syringe switch portion side view.

Fig. 5-1 is the switch cover front view; Fig. 5-2 is the switch cover side view.

Fig. 6-1 is the switch vertical view; Fig. 6-2 is the switch-side view.

Fig. 7 is the switch sections front view.

The specific embodiment

Below with reference to accompanying drawings, this utility model is described in detail:

In the accompanying drawings: 1 is pushing assisted plate, and 2 is the grip part, and 3 is the switch rod, and 4 is switch, and 5 is syringe, and 6 is contact site; 7 is the hole, and 8 is post, and 9 are extension spring, and 10 is switch cover, and 11 is the switch eaves; 12 are the plate of remaining silent, and 13 is the impression hinge, and 14 is bouncing plate, and 15 is groove, and 16 is otch.

Fig. 1 illustrates the overall structure and corresponding design of part of painless syringe to Fig. 7.

As depicted in figs. 1 and 2, whole syringe is made up of the grip part (2) on top and the contact site (10) of bottom; Be furnished with the syringe of except that pushing assisted plate (1), producing by national standard in the grip part (22), the upper end of the syringe of the syringe here (9) as the pushing assisted plate (1) of ordinary syringe, does not help the operation of syringe; There is pushing assisted plate (1) meniscate, level the both sides of upper end, grip part (2), play booster action; The inwall of grip part (2) contacts with the outer wall of syringe (9), and syringe (9) can be done rectilinear motion in grip part (2) like this; Respectively there is a centrage both sides, grip part (2) at same vertical plane, cuboid, the opening groove (15) that makes progress; Help the arrangement and the motion of syringe (9) and miscellaneous part; Groove be the inclined-plane bottom; Also can be that circular arc links to each other with grip part (2), groove (15) communicates with the top of grip part (2), helps the motion of pushing assisted plate (1).Contact site (10) is cylindrical, also can after deducting the syringe range ability, be semi-conical wide at the top and narrow at the bottom, can make the syringe operation like this; It is inside that contact site (10) lower end is level, and the center is circular injection orifice (7), can let syringe needle pass; The upper end of contact site (10), is installed and is taken off conveniently with the lower ends of grip part (2) through the cassette structure; The top of contact site (10) is identical with the inside and outside footpath of grip part (2), the junction have respectively be wall thickness half the, groove annular, equal altitudes, corresponding (15), play fixed effect; Also easy mounting with take off; Be uniform-distribution with 1 to 6 annular muscle in the groove (15), the thickness of muscle is 0.1 millimeter to 1 millimeter, plays and strengthens fixed effect.

Like Fig. 1, Fig. 2, Fig. 3-1, Fig. 3-2, Fig. 4-2; Fig. 5-1, Fig. 5-2, Fig. 6-1, Fig. 6-2 and shown in Figure 7, switch rod (3) is fixed in the pushing assisted plate (1) of the non-circular cylinder of syringe (5) one sides, non-circular ellipse, the triangle of comprising; Polygon and other various erose all shapes except circle; One and the corresponding hole of pushing assisted plate (7) are arranged at the top of switch rod (3), and switch rod (3) can not rotated, and play fixed effect; The groove (15) of the going up of switch rod (3), middle part and grip part (2) big or small corresponding, in, the groove (15) of the size of bottom and switch (4) big or small corresponding, help switch rod (3) like this and move down; In the switch rod (3), a upper end level, free, bouncing plate backward (14) are arranged at the bottom, bouncing plate (14) upper end and switch rod (3) are gone up the distance of the lower end horizontal level at middle part, and be identical with the height of switch (4); Between bouncing plate (14) and the switch rod (3) groove (15) is arranged, bouncing plate (14) upper end is with after switch excellent (3) contacts, and the rear portion of bouncing plate (14) does not exceed the rear portion of switch rod (3) middle and lower part; Like this; When switch rod (3) moved down on earth, bouncing plate (14) passed groove (15) back of switch (4) and ejects, and is stuck in switch (4) below; Be that syringe (9) can not be drawn back, reach disposable purpose.The groove (15) of switch (4) vertical openings in grip part sidewall forward, that contact with switch rod (3); More convenient; Switch (4) is cuboid; Part has a length switch groove identical with width, that run through up and down (15) with switch rod (3) middle and lower part in groove, and switch excellent (3) is passed; Switch (4) is in the inner top of switch groove (15); Have one with switch groove width such as (15), with the distance of switch (4) inner terminal within 5 millimeters, the platform within 5 millimeters downwards; Be before not injecting; The place that switch rod (3) is laid is bottom played fixation, and is difficult for slippage; Switch groove (15) sidewall has an otch (16) downwards, is for after accomplishing in injection, and firmly upwards during the pressing tube, bouncing plate (14) switch (4) that can fracture prevents to utilize once more, reaches disposable and purpose self-destruction.The part of switch (4) outside groove has a locating hole (7) vertical, parallel with outer wall with switch (4), accurately locatees when helping installing switch (4).Groove (15) is at the inwall of switch opening with top, exceed with the outer wall of lower part than switch opening to be no more than 5 millimeters, or groove (15) is at the inwall of switch opening with the lower part; Exceed with the outer wall on top than switch opening and to be no more than 5 millimeters; Upper end, the forward lateral wall of groove (15) does not have outstanding, like this, and in process of production can disposal molding; Increase output, reduce production costs.The both side edges of the groove of switch opening (15) lateral wall is furnished with the switch eaves (11) perpendicular to sidewall, is used to settle switch cover (10); Switch cover (10) is arranged in switch eaves (11), is used for protection switch (4) and is not pressed into the syringe that causes before use.

Shown in Fig. 1, Fig. 2 and Fig. 4-1, the groove of extension spring portion (15) is opening towards the place ahead, also opening towards the rear; Injector syringe is a tetragonal body at the pushing assisted plate (1) of (5) extension spring portion; The center of circle towards syringe (5), corresponding spring stack (8) are perpendicular to pushing assisted plate (1), and spring stack (8) is generally cylindrical; Also can be other shapes, help the installation of extension spring (9) and fixing like this.The outside of opening is connected with the plate of remaining silent (12) through impression hinge (13), and the width of the plate of remaining silent (12) is identical with opening with height, and there is anti-withdraw from outstanding the both sides of the plate of remaining silent (12); There is corresponding groove (15) both sides of groove (15) opening, like this, when opening the plate of remaining silent (12), help the installation of extension spring (9); After installation extension spring (9); The plate (12) of remaining silent that closes can be protected extension spring (9) and pushing assisted plate (1), and can not deviate from.The lower end of the groove of extension spring portion be fixed with pushing assisted plate (1) on the equidirectional spring stack of spring stack (8) (8); Play the effect of the other end of fixedly extension spring (9); The also installation of more and more extension spring (9); The helical spring post (8) of pushing assisted plate links to each other through the spring stack (8) of extension spring (9) with groove (15) lower end, makes extension spring (9) power is provided for syringe.

Grip part (22) and contact site (30) are transparent, use the medical plastic manufacturing, can see inner state, and what all parts were all aseptic is sealed in the aseptic outer package, meets aseptic medical requirement.

The operating process of this syringe is: this syringe just is pressure state in packing, only need unpack, and takes off contact site (30), utilizes the syringe needle aspiration medicinal liquid, reach required dosage after; Load onto contact site (30), syringe is placed on already sterilised, as the to need syringe position, take switch protection cover (11) away, Push switch (24); At this moment, the switch groove that switch rod (23) passes switch (24) moves downward, and syringe moves downward under the effect of extension spring (29) fast; Syringe needle gets into intramuscular rapidly, takes out the pull bar of syringe, and whether observe has blood back, slow again injection liquid; Up to completion, extract syringe rapidly, cotton swab is pushed down pin hole, and injection is accomplished; At this moment, the switch of syringe rod (23) is blocked by bouncing plate (34), can not be utilized once more, the whole more at last syringe of destroying.Whole process, except because the drug-induced pain, omnidistance technical operation according to painless injection.

This utility model is applicable to that each medical institutions, prevention station and family carry out intramuscular injection.

Claims

1. painless syringe, it comprises: grip part, contact site, syringe, switch, spring and switch rod, it is characterized in that: the lower end of grip part links to each other with the upper end of contact site, and there is annular muscle the junction; There is pushing assisted plate the both sides of upper end, grip part; Be furnished with syringe in the grip part; There is the groove of top opening the both sides, grip part; The pushing assisted plate of the switch portion of injector syringe upper end is non-circular cylinder, and the pushing assisted plate of opposite side extension spring portion is the tetragonal body that spring stack is arranged; Syringe the pushing assisted plate of the switch-side switch rod through bouncing plate is arranged be arranged in the grip part sidewall and have the switch of locating hole, switch groove, otch and platform to link to each other; The sidewall of grip part below sidewall above the switch opening and switch opening be not on same plane; Syringe links to each other with the corresponding spring stack in groove lower end through extension spring at the spring stack of the pushing assisted plate of extension spring side; The groove of the grip part of extension spring portion is towards a side opening, and open outer side links to each other with the plate of remaining silent through the impression hinge; There is the switch eaves of vertical direction in the outside of switch opening; The switch eaves is furnished with switch cover outward; All parts are all aseptic, all are sealed in the aseptic medical outer package.