CN103007398A

CN103007398A - Disposable syringe with safety cap for locking needle

Info

Publication number: CN103007398A
Application number: CN2012101169253A
Authority: CN
Inventors: 吴铭远
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-23
Filing date: 2012-04-19
Publication date: 2013-04-03

Abstract

A disposable syringe with a safety cap for locking needle is composed of a piston arm, a piston end, a syringe body, a fixing sleeve and a safety cap for locking needle. The piston end is clamped with the piston arm by at least one protruding tip. When the user pulls back the piston arm, the sleeve rib on the fixed sleeve is clamped on the syringe body to limit the fixed sleeve to be pushed forward again. If the user pushes the plunger arm, the protruding tip will be separated from the fixing sleeve, so that the plunger arm and the plunger end are separated, and then the two can not be clamped again. In addition, when the user rotates the safety cover for locking the needle, the injection needle of the syringe is clamped into the safety cover, so that the disposable syringe with the safety cover for locking the needle can not be reused.

Description

Disposable syringe with locking needle safety lid

Technical field

The present invention is relevant for a kind of therapeutic medical syringe, and a kind of safety and high efficiency of having concurrently particularly is with the disposable syringe with locking needle safety lid of guaranteeing to be reused.

Background technology

Syringe is a kind of quite common medical supplies, and it is that drug injection is advanced in the patient body, to reach treatment effect.Generally speaking, the healthcare givers introduces medicine in the syringe first, and then by the syringe needle on the syringe, this drug injection is advanced in the patient body.

With regard to the aspect that reality is used, traditional syringe has many potential risk factor.In by improper use, it will cause on patient's health very serious injury and bad impact.

Wherein, a main problem is, traditional syringe extremely easily has reusable problem, and its reason is, therefore traditional syringe structurally and can't avoid reusing has the inclination still reuse syringe easily of personage.

For instance, when in injector to inject medicine to a patient body, this patient's blood (blood), remaining medicine (medicine), virus (virus), antibacterial (bacteria) or other morbid substance (contaminant) all might remain on syringe or its syringe needle.When same syringe was used again at the second patient, therefore the second patient will may infect to last position patient's pathogenic bacteria.

If first patient infected by virus, the second patient may because share syringe with first patient, arrive identical virus and infect so.Perhaps, therefore the second patient also might, react and first employed medicine of patient produced irritated (allergy).

Further, if simple with regard to the outward appearance of syringe, the healthcare givers is difficult to judge whether it has been a syringe that was used.

Therefore, in view of more than, how a kind of not only safety but also effective is provided, and can guarantees the syringe that can't be used by secondary, need one of problem of solution badly for those skilled in the art.

Summary of the invention

The problem that exists for solving prior art, main purpose of the present invention is to provide a kind of disposable syringe with locking needle safety lid of safety, it can automatic blocking, and automatically cut off its intraware after injection, effectively avoids thus syringe to be reused.

The invention provides a kind of disposable syringe with locking needle safety lid, it comprises: a piston arm; One piston end; One fixed muffle is outside this piston arm that is arranged at part and this piston end; One syringe body is in order to hold this piston arm, this piston end and this fixed muffle, wherein, when a user this piston arm of pulling back first, when advancing again this piston arm, with so that this piston end leaves the sheathed scope of this fixed muffle, simultaneously so that this piston end on this piston arm, separate; An and locking needle safety lid, be arranged at outside this syringe body, when this user rotated this locking needle safety lid, an injection needle of this disposable syringe was sticked in this locking needle safety lid, to prevent the use that again bounces back of this locking needle safety cover.

Described disposable syringe with locking needle safety lid wherein, has at least one protruding tip on this piston end, this protruding tip is sticked in the most advanced and sophisticated flange on this piston arm.

Described disposable syringe with locking needle safety lid wherein, has at least one sleeve rib on the outer surface of this fixed muffle, this sleeve rib limits this fixed muffle by forward impelling.

Described disposable syringe with locking needle safety lid, wherein, this fixed muffle includes:

One inner sleeve, its material are plastic cement; And

One outer sleeve, its material are synthetic rubber.

Described disposable syringe with locking needle safety lid wherein, more includes a stop block on this syringe body, this stop block is in order to avoid this fixed muffle to withdraw from this syringe body.

Described disposable syringe with locking needle safety lid wherein, has one and uses indicator on this piston arm, this use indicator is in order to show whether this syringe was used.

Described disposable syringe with locking needle safety lid wherein, more comprises a rod member on this piston arm, this piston arm is sticked in this piston end by this rod member that is inserted in this piston end.

Described disposable syringe with locking needle safety lid, wherein, this rod member and the mutually corresponding setting of this piston end are to prevent this piston end whiz on this piston arm.

The present invention also provides a kind of disposable syringe with locking needle safety lid, and it comprises: a piston end has at least one protruding tip on this piston end; One piston arm, this piston arm relies on this at least one protruding tip and is sticked in this piston end; One fixed muffle is outside this protruding tip that is arranged at this piston end; One syringe body is in order to hold this piston arm, this piston end and this fixed muffle; An and locking needle safety lid, be arranged at outside this syringe body, when a user rotated this locking needle safety lid, an injection needle of this disposable syringe was sticked in this locking needle safety lid, to prevent the use that again bounces back of this locking needle safety cover.

Described disposable syringe with locking needle safety lid wherein, has at least one sleeve rib on this fixed muffle, this sleeve rib limits this fixed muffle by forward impelling.

Described disposable syringe with locking needle safety lid, wherein, this disposable syringe with locking needle safety lid before use with use after, this piston end all is positioned at this syringe body.

Described disposable syringe with locking needle safety lid, wherein, at this after fixedly the sheathed scope of this fixed muffle is left at the tip, this fixing most advanced and sophisticatedly on this piston arm, separates.

Described disposable syringe with locking needle safety lid wherein, more includes a stop block on this syringe body, withdraw from this syringe body in order to avoid this fixed muffle.

Described disposable syringe with locking needle safety lid, wherein, when this user this piston arm of pulling back first, when pushing this piston arm, the sheathed scope of this fixed muffle is left at the fixedly tip on this piston end again.

The present invention provides a kind of disposable syringe with locking needle safety lid in addition, and it comprises: a piston arm; One piston end, have at least one protruding tip on this piston end, be sticked in this piston arm to rely on this protruding tip: a fixed muffle has at least one sleeve rib, when this protruding tip was sticked in this piston arm, this fixed muffle was around being arranged at outside this protruding tip; One syringe body holds this piston arm, this piston end and this fixed muffle, has a stop block on this syringe body, and this stop block is in order to avoid this fixed muffle to withdraw from this syringe body; An and locking needle safety lid, be arranged at this syringe body outside, when a user rotated this locking needle safety lid, an injection needle of this disposable syringe was sticked in this locking needle safety lid, to prevent the use that again bounces back of this locking needle safety cover.

Described disposable syringe with locking needle safety lid, wherein, when this user pushed this piston arm, the sheathed scope of this fixed muffle was left at the fixedly tip on this piston end.

According to embodiments of the invention, above-mentioned locking needle safety lid is arranged at outside the syringe body, and has a retractable Safety cap body.Before syringe uses, the winding of locking needle safety bezel ring, place syringe an injection needle around, to prevent user or healthcare givers's false touch injection needle.When using syringe, user can by the locking needle safety lid of pulling back, make it along the outer surface slippage of syringe body, and expose above-mentioned injection needle.Under this situation, locking needle safety cover retraction, and simultaneously so that the safety head open front of injection needle Self-closing lock needle safety lid and be convexly equipped with out, for being injected in the patient body.After syringe was finished using, user can be again be retracted its home position with locking needle safety lid, again to cover its syringe needle, avoided finishing the syringe needle false touch healthcare givers after the injection.

Afterwards, the rotatable locking needle safety lid of user.When locking needle safety cover was rotated, above-mentioned injection needle was contacted with in the syringe needle holding section of syringe needle lock, was then amounted to towards the inside of safety head body gradually.When injection needle touched the bottom of syringe needle holding section, injection needle was namely entered in the syringe needle holding section by bending, in the case, namely is sticked in the syringe needle holding section so that finished the injection needle of injection.Snap-fit into after the syringe needle holding section in case it should be noted that injection needle, the locking needle safety lid that the embodiment of the invention discloses namely can't be by again retraction use.

According to one embodiment of the invention, piston arm more can comprise a rod member, and this rod member can be inserted in the accommodation space in the pedestal of piston end.Fixed muffle is around around the protruding tip that is arranged at piston end, and thus, fixed muffle can be so that protruding tip be sticked in piston arm.

According to one embodiment of the invention, when user is pulled back the piston arm of syringe, in syringe body, thus, the motion of fixed muffle will be locked the sleeve rib on the fixed muffle with clip, and forward impelling again.

If this moment, user began the piston arm of push injection device forward, then protruding tip will begin to break away from the sheathed scope of fixed muffle, so that protruding tip thereby beginning separate with piston arm.After protruding tip and piston arm no longer were fastened togather, user still can by the rod member of pushing piston arm, advance to drive piston end, until piston end is conflicted to the front end of syringe body.But, according to embodiments of the invention, in case piston end after breaking away from the piston arm, the two can't engage again.And piston end also can't be spurred again backward.Be the disposable syringe with locking needle safety lid that proposes with, the present invention, reach thus the purpose of avoiding syringe to be reused.

Disclosed piston arm can form a location system in the lump with syringe body, mainly in order to fixing the position of piston arm in syringe, and prevents that piston arm from producing displacement transporting of syringe in the process.When syringe is transported to destination, and the healthcare givers is when preparing to bring into use, and healthcare givers's piston arm of can outwarding winding first is to untie the piston component of location.Afterwards, healthcare givers's piston arm of can successfully pulling back is to introduce medicine to be injected in the syringe.

Secondly, according to disclosed embodiment, more can have one on the piston arm and use indicator.In one embodiment, use indicator for example can comprise: the letter of " USED "; Perhaps, the use indicator can the higher color of display brightness.After syringe is used, uses indicator namely can demonstrate for example printed words of above-mentioned " USED ", or demonstrate obvious chroma.Thus, user can rely on interpretation to use indicator, determines whether this syringe was used.

In sum, the disposable syringe with locking needle safety lid proposed by the invention not only can avoid the healthcare givers to reuse same syringe, more can effectively suppress the probability of junkie or the common syringe needle of drug abuser.

In addition, according to the disclosed disposable syringe with locking needle safety lid, it can be in order to reduce the danger of user concomitant medication and syringe needle.Even if user behind the injection medicine, is not done syringe legal recovery or abandoned, the disposable syringe with locking needle safety lid that the present invention discloses also can prevent effectively that the next bit user from reusing.

Under cooperate appended accompanying drawing to illustrate in detail by specific embodiment, when the effect that is easier to understand purpose of the present invention, technology contents, characteristics and reaches.

Description of drawings

Figure 1A is the cutaway view according to the piston arm of the disposable syringe with locking needle safety lid of embodiment of the invention proposition;

Figure 1B is the side view according to the piston arm of the disposable syringe with locking needle safety lid of embodiment of the invention proposition;

Fig. 1 C is the rearview according to the piston arm of the disposable syringe with locking needle safety lid of embodiment of the invention proposition;

Fig. 1 D is the side view according to the piston arm Handheld Division of the disposable syringe with locking needle safety lid of embodiment of the invention proposition;

Fig. 1 E is the cutaway view according to the piston arm Handheld Division of the disposable syringe with locking needle safety lid of embodiment of the invention proposition;

Fig. 1 F is the rearview according to the piston arm Handheld Division of the disposable syringe with locking needle safety lid of embodiment of the invention proposition;

Fig. 2 A is the cutaway view according to the fixed muffle of the disposable syringe with locking needle safety lid of embodiment of the invention proposition;

Fig. 2 B is the side view according to the fixed muffle of the disposable syringe with locking needle safety lid of embodiment of the invention proposition;

Fig. 2 C is the rearview according to the fixed muffle of the disposable syringe with locking needle safety lid of embodiment of the invention proposition;

Fig. 3 A is the cutaway view according to the piston end of the disposable syringe with locking needle safety lid of embodiment of the invention proposition;

Fig. 3 B is the side view according to the piston end of the disposable syringe with locking needle safety lid of embodiment of the invention proposition;

Fig. 3 C is the rearview according to the piston end of the disposable syringe with locking needle safety lid of embodiment of the invention proposition;

Fig. 4 A is the cutaway view of the syringe body of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention;

Fig. 4 B is the side view of the syringe body of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention;

Fig. 4 C is the rearview of the syringe body of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention;

Fig. 4 D is the cutaway view of the stop block on the syringe body of the disposable syringe that has locking needle safety lid according to the embodiment of the invention;

Fig. 4 E is the side view of the stop block on the syringe body of the disposable syringe that has locking needle safety lid according to the embodiment of the invention;

Fig. 4 F is the rearview of the stop block on the syringe body of the disposable syringe that has locking needle safety lid according to the embodiment of the invention;

Fig. 4 G is the cutaway view of the locking needle safety lid of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention;

Fig. 4 H is the side view of the locking needle safety lid of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention;

Fig. 4 I is the rearview of the locking needle safety lid of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention;

Fig. 4 J is the cutaway view of the support ring of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention;

Fig. 4 K is the side view of the support ring of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention;

Fig. 4 L is the rearview of the support ring of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention;

Fig. 5 A is the cutaway view according to the disposable syringe with locking needle safety lid of the embodiment of the invention;

Fig. 5 B is the side view according to the disposable syringe with locking needle safety lid of the embodiment of the invention;

Fig. 5 C is the rearview according to the disposable syringe with locking needle safety lid of the embodiment of the invention;

Fig. 5 D is the cutaway view according to the disposable syringe with locking needle safety lid of the embodiment of the invention;

Fig. 5 E is the cutaway view according to the disposable syringe with locking needle safety lid of the embodiment of the invention;

Fig. 6 A is the disposable syringe with locking needle safety lid according to the embodiment of the invention, its stage schematic diagram in use;

Fig. 6 B is the disposable syringe with locking needle safety lid according to the embodiment of the invention, its stage schematic diagram in use;

Fig. 6 C is the disposable syringe with locking needle safety lid according to the embodiment of the invention, its stage schematic diagram in use;

Fig. 6 D is the disposable syringe with locking needle safety lid according to the embodiment of the invention, its stage schematic diagram in use;

Fig. 6 E is the disposable syringe with locking needle safety lid according to the embodiment of the invention, its stage schematic diagram in use;

Fig. 6 F is the disposable syringe with locking needle safety lid according to the embodiment of the invention, its stage schematic diagram in use;

Fig. 6 G is the disposable syringe with locking needle safety lid according to the embodiment of the invention, its stage schematic diagram in use;

Fig. 6 H is the disposable syringe with locking needle safety lid according to the embodiment of the invention, its stage schematic diagram in use.

Description of reference numerals: 10-has the disposable syringe of locking needle safety lid; The 100-piston arm; The 110-Handheld Division; The 111-screw thread; The 112-screw thread; The 120-connection handle; The most advanced and sophisticated flange of 122-; 123-uses indicator; The 140-rod member; The 200-fixed muffle; The 220-outer sleeve; The 225-sleeve rib; The 230-inner sleeve; 235-sleeve sheet; The 300-piston end; The 310-top; The 320-pedestal; The 321-accommodation space; The 330-protruding tip; The 400-syringe body; The 410-body wall; The 415-body is most advanced and sophisticated; The 430-injection needle; 450-the first noumenon flange; 451-the second body flange; The 460-stop block; The 461-stop wall; 486-protecgulum stopper section; Rest section before the 487-; 496-bonnet stopper section; Rest section behind the 497-; The 498-body channel; 500-locking needle safety lid; 510-safety head body; The open front of 520-safety head; 530-safety head guide member; The 540-release opening; 550-syringe needle lock; The sealed wall of 554-; 555-syringe needle holding section; The 560-support ring; The 565-releasing piece.

The specific embodiment

Above relevant for description of contents of the present invention, with following embodiment in order to demonstration with explain spirit of the present invention and principle, and provide patent claim of the present invention further to explain.About feature of the present invention, implementation and effect, hereby cooperate accompanying drawing to be described in detail as follows do preferred embodiment.

The following description sees also shown in Figure 1A to Fig. 1 F.Wherein, Figure 1A, Figure 1B and Fig. 1 C are respectively cutaway view, side view and the rearview of the piston arm of the disposable syringe with locking needle safety lid that proposes according to the embodiment of the invention.Fig. 1 D is the side view according to the piston arm Handheld Division of the disposable syringe with locking needle safety lid of embodiment of the invention proposition.Fig. 1 E is the cutaway view according to the piston arm Handheld Division of the disposable syringe with locking needle safety lid of embodiment of the invention proposition.Fig. 1 F is the rearview according to the piston arm Handheld Division of the disposable syringe with locking needle safety lid of embodiment of the invention proposition.

The disclosed disposable syringe (single use syringe) with locking needle safety lid, mainly include: a piston component (plunger assembly), a fixed muffle (tip retaining sleeve), and a syringe body (syringe body).

Above-mentioned piston component includes a piston arm (plunger arm) and a piston end (plunger tip), and above-mentioned piston end and piston arm be removal or combine optionally.Generally speaking, the healthcare givers mainly utilizes piston component, and with the introduction of medications syringe body, afterwards, the healthcare givers can be with drug injection to the patient body with first.

Shown in Figure 1A to Fig. 1 F, piston arm 100 includes a Handheld Division (plunger knob) 110, one connection handle (plunger stem) 120, one most advanced and sophisticated flange (tip flange) 122 and one rod member (arm post) 140.

According to one embodiment of the invention, shown in Fig. 1 D to Fig. 1 F, more can have at least one screw thread (thread tip) 111 on the Handheld Division 110, rely on the effect of screw thread 111, so that Handheld Division 110 is locked in the screw thread 112 on the connection handle 120.In other words, the present invention is locked in together Handheld Division 110 and connection handle 120 by the mutual corresponding two groups of screw threads 111,112 that arrange.

According to another embodiment of the present invention, Handheld Division 110 is not limited with above-mentioned screwing togather of being sayed with the juncture of connection handle 120, the two also can rely on for example welding of ultrasound wave (ultrasonic) certainly, with Handheld Division 110 and connection handle 120 seam (weld) together.

According to embodiments of the invention, Handheld Division 110 is disposed at an end of connection handle 120.Healthcare givers or user can rely on Handheld Division 110 piston arm 100 of pulling back, so that liquid or medicine to be injected are introduced syringe.Similarly, healthcare givers or user also can rely on Handheld Division 110 pushing piston arms 100, so that piston component is pushed forward, so that liquid or medicine to be injected are discharged in syringe, and are injected in patient's the body simultaneously.

On the other hand, piston arm 100 includes at least one most advanced and sophisticated flange 122 and rod member 140, and above-mentioned most advanced and sophisticated flange 122 and rod member 140 are arranged on the other end of connection handle 120.According to embodiments of the invention, above-mentioned most advanced and sophisticated flange 122 and rod member 140 its main purposes are lived piston end in the piston component in order to support (hold) and fixing (position).

As shown in Figure 1B, can comprise more on the connection handle 120 that one uses indicator 123.For example, use indicator 123 for example can comprise: the letter of " USED "; Perhaps, use indicator 123 can be in order to the higher color of display brightness.According to one embodiment of the invention, after syringe is used, uses indicator 123 just can demonstrate for example printed words of above-mentioned " USED ", or demonstrate obvious chroma.Otherwise, syringe be used before, the higher color of above-mentioned " USED " printed words or brightness can not displayed.Thus, whether user can be used by come this syringe of interpretation with indicator 123.

Continuous Fig. 3 A to Fig. 3 C that sees also, wherein Fig. 3 A is the side view of the piston end of the disposable syringe with locking needle safety lid that proposes according to the embodiment of the invention and Fig. 3 C rearview for the piston end of the disposable syringe with locking needle safety lid that proposes according to the embodiment of the invention for the cutaway view of the piston end of the disposable syringe with locking needle safety lid that proposes according to the embodiment of the invention, Fig. 3 B.

According to the disclosed disposable syringe with locking needle safety lid, its piston component comprises that more one is connected in the piston end 300 of piston arm 100.

Shown in Fig. 3 A to Fig. 3 C, piston end 300 includes a top (tip head) 310 and one pedestal (tip base) 320.Wherein, have the accommodation space 321 of a hollow (hollow) in the pedestal 320, accommodation space 321 can be in order to the rod member 140 that is installed with Figure 1A.Have more one or more protruding tip (tip retaining arm) 330 on the pedestal 320.Most advanced and sophisticated flange 122 among Fig. 1 C can be sticked in protruding tip 330, thus, so that the piston arm 100 of piston end 300 and Figure 1A is fixed together.

According to one embodiment of the invention, as shown in Figure 3A, top 310 more can have at least one apical ring (head ring) 311 on the top 310 of piston end 300, increase thus the suction between top 310 and the syringe body, so that can more closely fit together with syringe body.

According to one embodiment of the invention, accommodation space 321 can be spheroidal with rod member 140.

According to another embodiment of the present invention, accommodation space 321 can also be the non-ball shape with corner angle with rod member 140, with when the two engages, effectively prevents piston end 300 whiz on piston arm 100.For example, accommodation space 321 for example can be with rod member 140: rectangle (rectangle), triangle (triangle) or hexagonal configuration (diamond).Thus, when rod member 140 was inserted in the accommodation space 321 of piston end 300, the piston arm 100 (shown in Figure 1A) that piston end 300 only can engage with it rotated in the lump, and unlikelyly separated with piston arm 100.

Continuous Fig. 2 A to Fig. 2 C that sees also, wherein, Fig. 2 A is the side view of the fixed muffle of the disposable syringe with locking needle safety lid that proposes according to the embodiment of the invention and Fig. 2 C rearview for the fixed muffle of the disposable syringe with locking needle safety lid that proposes according to the embodiment of the invention for the cutaway view of the fixed muffle of the disposable syringe with locking needle safety lid that proposes according to the embodiment of the invention, Fig. 2 B.

The disposable syringe with locking needle safety lid according to the embodiment of the invention discloses more includes a fixed muffle 200.According to embodiments of the invention, fixed muffle 200 is around the body (tube) outside the piston end 300 of the piston arm 100 of the Figure 1A that is sheathed on part and Fig. 3 A.Wherein, according to embodiments of the invention, can have a plurality of sleeve rib (sleeve rib) 225 on the above-mentioned fixed muffle 200, and stretch out on the outer surface of the body of each sleeve rib 225 self-retaining sleeve 200 and form.

According to one embodiment of the invention, the pipe inboard of fixed muffle 200 can offer groove, angle (angled) or form recess (chamfered).Thus, user can rely on this design relatively easily, to remove or to take off in the piston end 300 self-retaining sleeves 200 with protruding tip 330 or piston component.

Shown in Fig. 2 A, in one embodiment, fixed muffle 200 includes an inner sleeve 230 and an outer sleeve 220, wherein, the material of inner sleeve 230 for example can be plastic cement (plastic), and the material of outer sleeve 220 for example can be a synthetic rubber (rubber), and inner sleeve 230 is sheathed in the outer sleeve.Can have one or more sleeve sheet (sleeve tab) 235 on the inner sleeve 230, sleeve sheet 235 is used for being sticked between the inner and outer sleeves 230,220, to prevent from producing between inner sleeve 230 and the outer sleeve 220 relative sliding of the two.

According to the present invention, the inner sleeve 230 among this embodiment is main in order to reduce the frictional force (friction) between fixed muffle 200 and the piston arm 100.Sleeve rib 225 on the outer sleeve 220 is more available so that fixed muffle 200 is sticked in syringe body, skids off in syringe body to prevent fixed muffle 200.

Below, please then consult shown in Fig. 4 A to Fig. 4 F.Wherein, Fig. 4 A is the cutaway view of the syringe body of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention.Fig. 4 B is the side view of the syringe body of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention.Fig. 4 C is the rearview of the syringe body of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention.Fig. 4 D is the cutaway view of the stop block on the syringe body of the disposable syringe that has locking needle safety lid according to the embodiment of the invention.Fig. 4 E is the side view of the stop block on the syringe body of the disposable syringe that has locking needle safety lid according to the embodiment of the invention.Fig. 4 F is the rearview of the stop block on the syringe body of the disposable syringe that has locking needle safety lid according to the embodiment of the invention.

The disposable syringe with locking needle safety lid according to the embodiment of the invention discloses more comprises a syringe body 400.Wherein, syringe body 400 includes most advanced and sophisticated (syringe body tip) 415, one body wall (syringe body wall) 410, one the first noumenon flange (body grasp flange) 450 and one stop block of a body (sleeve stopper) 460.According to one embodiment of the invention, may be configured with a syringe needle (not shown) on the body tip 415, it can the mold mode form on the body tip 415, in order to healthcare givers or user drug injection is advanced in the patient body.

In this embodiment, the first noumenon flange 450 stretches out and forms from the syringe body 400 of syringe, and it mainly can be helped with auxiliary when healthcare givers or user are implemented syringe.For instance, when user relied on Handheld Division 110 to pull back piston component, user can select simultaneously its finger to be placed the top of the first noumenon flange 450, to increase firmly whereby.As for when user or healthcare givers rely on Handheld Division 110 pushing piston assembly, user or healthcare givers also can select simultaneously finger to be placed the below of the first noumenon flange 450, to be beneficial to whereby firmly.

According to embodiments of the invention, shown in Fig. 4 D to Fig. 4 F, more can comprise one second body flange 451 on the stop block 460, it can in order to the first noumenon flange 450 and stop wall (sleeve stopper wall) 461 that is sticked in syringe body 400, prevent that thus the fixed muffle 200 of Fig. 2 A and Fig. 2 B from withdrawing from from syringe body 400.

According to embodiments of the invention, shown in Fig. 4 A, more can have one or more volume scale (marker) on the syringe body 400, thus, user can by the volume scale of interpretation syringe contents, be learnt medicine or the solution of having introduced how many volumes at present.

According to embodiments of the invention, shown in Fig. 4 A, more include a protecgulum stopper section (front cover stop) 496 and one rear rest section (rear holder) 497 of 486, one front rest section (front holder) 487, one bonnet stopper section (rearcover stop) on the syringe body 400.

Wherein, protecgulum stopper section 486 forms barrier one around syringe body 400, to be used for stopping that safety head is by forward impelling.On the other hand, bonnet stopper section 496 also similarly forms barrier one around syringe body 400, to be used for stopping that safety head is pulled back backward.

Front rest section 487 with round around be arranged at syringe body 400 around, during by forward impelling, to support safety head in correct position at syringe body 400.On the other hand, rear rest section 497 also with round around be arranged at syringe body 400 around, with when syringe body 400 is pulled back backward, can support safety head in correct position.

In one embodiment, have a body channel (body channel) 498 in the syringe body 400, this body channel 498 can be traveling on the correct direction in order to keep and to guide the locking needle safety to cover when the forward impelling.

Below, please then consult shown in Fig. 4 G to Fig. 4 I.Wherein, Fig. 4 G is the cutaway view of the locking needle safety lid of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention.Fig. 4 H is the side view of the locking needle safety lid of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention.Fig. 4 I is the rearview of the locking needle safety lid of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention.

According to embodiments of the invention, locking needle safety lid 500 includes: a safety head body (coverbody) 510, a safety head open front (cover front opening) 520, one safety head guide member (coverguide) 530, a release opening (release opening) 540 and one syringe needle lock (needle lock) 550.

Wherein, syringe needle lock 550 comprises a sealed wall (lock wall) 554 and one syringe needle holding section (needle trap) 555.

According to embodiments of the invention, shown in Fig. 4 G to Fig. 4 I, the inner surface of safety head guide member 530 Self-closing lock needle safeties lid 500 extends to form.And, safety head guide member 530 can be along body channel 498 slippages in the syringe body 400 among Fig. 4 B, move on correct direct of travel to control whereby locking needle safety lid 500, simultaneously, reach and avoid the locking needle safety to cover the purpose of 500 unscrupulous rotations.

According to embodiments of the invention, locking needle safety lid 500 is arranged at outside the syringe body, and has an outer safety head that is disposed at syringe body, and this safety head is designed to retractable (retractable) lid.Generally speaking, before syringe uses, locking needle safety lid 500 around be arranged at injection needle 430 (with reference to figure 5A, Fig. 5 B) around, to prevent user or healthcare givers's false touch injection needle.As for, when using syringe, user can by the locking needle safety lid 500 of pulling back, make it along the outer surface slippage of syringe body, and expose above-mentioned injection needle 430.Under this situation, locking needle safety lid 500 is bounced back, and simultaneously so that the safety head open front 520 of injection needle 430 Self-closing lock needle safeties lid 500 be convexly equipped with out, for being injected in the patient body.After syringe was finished using, user can be again be retracted its home position with locking needle safety lid 500, again to cover its syringe needle 430, avoided finishing the syringe needle 430 false touch healthcare givers after the injection.

Afterwards, user can begin to rotate locking needle safety lid 500.When locking needle safety lid 500 was rotated, above-mentioned injection needle 430 was contacted with the syringe needle holding section 555 of syringe needle lock 550, was then amounted to towards the inside of safety head body 510 gradually (bend).When injection needle 430 touched the bottom of syringe needle holding section 555, injection needle 430 was namely entered in the syringe needle holding section 555 by bending, in the case, namely is sticked in the syringe needle holding section 555 so that finished the injection needle 430 of injection.Snap-fit into after the syringe needle holding section 555 in case it should be noted that injection needle 430, the locking needle safety lid 500 that the embodiment of the invention discloses namely can't be by again retraction use.

Moreover, please then consult shown in Fig. 4 J to Fig. 4 L.Wherein, Fig. 4 J is the cutaway view of the support ring of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention.Fig. 4 K is the side view of the support ring of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention.Fig. 4 L is the rearview of the support ring of the disposable syringe with locking needle safety lid that discloses according to the embodiment of the invention.

According to one embodiment of the invention, support ring 560 is disposed in the open rearward end of syringe body 400.In addition, support ring 560 more can comprise a releasing piece (release tab) 565.Therefore, when support ring 560 is placed in the syringe body 400, the release opening 540 of the locking sleeve safety head 500 that releasing piece 565 can be in Fig. 4 G and be convexly equipped with out.

Continuous seeing also shown in Fig. 5 A to Fig. 5 E and Fig. 6 A to Fig. 6 H.Wherein, Fig. 5 A is the cutaway view according to the disposable syringe with locking needle safety lid of the embodiment of the invention, Fig. 5 B is the side view according to the disposable syringe with locking needle safety lid of the embodiment of the invention, and Fig. 5 C is the rearview according to the disposable syringe with locking needle safety lid of the embodiment of the invention.Fig. 5 D, Fig. 5 E are the cutaway view according to the disposable syringe with locking needle safety lid of the embodiment of the invention.Fig. 6 A to Fig. 6 H then is the disposable syringe with locking needle safety lid according to the embodiment of the invention, its each stage schematic diagram in use.Relevant the following description sees also shown in aforesaid Figure 1A to Fig. 4 L, hereby is described in detail as follows.

At first, shown in Fig. 5 A to Fig. 5 E, the front overall schematic that it is using for the disposable syringe 10 with locking needle safety lid of the present invention.In embodiments of the invention, the disposable syringe 10 that this kind has locking needle safety lid includes piston component, fixed muffle 200 and syringe body 400.Wherein, above-mentioned piston component comprises: piston arm 100 and piston end 300, and above-mentioned fixed muffle 200 is arranged in the middle of the syringe body 400.

According to embodiments of the invention, piston end 300 is positioned on the front end of syringe body 400 inside.The rod member 140 of piston arm 100 is sticked in the accommodation space 321 of pedestal 320 of piston end 300.Fixed muffle 200 is around around the protruding tip 330 that is arranged at piston end 300, and so that protruding tip 330 is held in most advanced and sophisticated flange 122, thus so that piston end 300 be solid-located with piston arm 100.

Specifically, shown in Fig. 6 A to Fig. 6 B, when user is pulled back piston arm 100 by Handheld Division 110, in the case, because the most advanced and sophisticated flange 122 among Fig. 1 C can be sticked in protruding tip 330, thus, so that the piston arm 100 of piston end 300 and Figure 1A is fixed together, and pulled back simultaneously (i.e. direction below the diagram).At this moment, the top 310 of piston end 300 promotes fixed muffle 200 in the lump, so that fixed muffle 200, piston end 300 and piston arm 100 threes are pulled together.

After fixed muffle 200 moved in syringe body 400 backward, the sleeve rib 225 of fixed muffle 200 was contacted with the body wall 410 of syringe body 400.It should be noted that, according to embodiments of the invention, in case fixed muffle 200 is backward mobile, frictional force between the sleeve rib 225 that then is located thereon and the body wall 410 of syringe body 400 will be relatively large, and so that fixed muffle 200 can't move (namely toward the direction that illustrates the top) again forward.In other words, the design of sleeve rib 225 can't be by forward impelling in order to limit fixed muffle 200, but it still can continue to spur backward.

Afterwards, the piston arm 100 if user continues to pull back, then fixed muffle 200 will continue to be spurred along with piston component (comprising piston arm 100 and piston end 300) in the lump backward.

When fixed muffle 200 falls back on the bottom opening of syringe body 400, the stop block 460 on the syringe body 400 will support fixed muffle 200, so that fixed muffle 200 can't continue to move backward.In other words, stop block 460 so that fixed muffle 200 can't in syringe body 400, withdraw from.

In the case, shown in 6C figure, fixed muffle 200 is locked and can't again moves forward or backward, and its reason is that fixed muffle 200 is blocked by stop block 460, therefore can't continue to move backward.And fixed muffle 200 is also because the design of sleeve rib 225, and so that fixed muffle 200 can't be again mobile forward.

The continuous 6D figure that sees also owing to fixed muffle 200 at this moment has been locked, and can't move forward or backward again.Therefore, if user continue to promote Handheld Division 110, in the case, will only there be piston arm 100 can continue to move forward, further, also will drives in the protruding tip 330 self-retaining sleeves 200 on the piston end and be pushed out.Further, leave the sheathed scope of fixed muffle 200 when protruding tip 330 after, shown in 6D figure, protruding tip 330 will no longer be sticked in the most advanced and sophisticated flange 122 on the piston arm 100.But, even so, piston end 300 still can continue to rely on the promotion of the rod member that contacts 140 and protruding tip 330, and continue to move forward.

Shown in 6E figure, when piston component one tunnel forward impelling, last piston end 300 will be kept out in the front end place of syringe body 400 near the syringe needle place.

At this moment, the piston arm 100 if user is pulled back again, because protruding tip 330 no longer is sticked in most advanced and sophisticated flange 122, therefore, shown in 6F figure, the two will begin piston end 300 and piston arm 100 to separate.

Therefore, when piston end 300 and piston arm 100 the two after separating, piston arm 100 can't be incorporated into piston end 300 again.In other words, shown in 6G figure and 6H figure, the disposable syringe 10 with locking needle safety lid that the present invention proposes namely can't again be reused.

Specifically, in a single day fall back on sheathed scope outer of fixed muffle 200 when protruding tip 330 after, piston end 300 namely begins to separate with piston arm 100.And piston end 300 also can't be combined again with piston arm 100.Thus, user again can't rely on pulling piston arm 100, comes in the lump power piston end 300.

And at piston end 300 and piston arm 100 after separatings, the use indicator 123 on the piston arm 100 is namely revealed.User just can rely on interpretation to use indicator 123, learns whether this syringe was used.

Secondly, for enlarging practical application aspect of the present invention, product designer more optionally by means of a plurality of sleeve rib 225 are set, is controlled the drug dose that syringe should be injected.For example, if the drug dose of the required introducing of syringe, corresponding to 25% of the pipe volume of syringe body, so, sleeve rib 225 can select to be arranged at the place of the pipe volume 25% of corresponding fixed muffle 200.Again, if the drug dose of the required introducing of syringe, corresponding to 50% of the pipe volume of syringe body, then another sleeve rib 225 should be arranged at the place of the pipe volume 50% of corresponding fixed muffle 200, namely can't again push back forward after fixed muffle 200 walks to place, sleeve rib 225 places to control, and piston end 300 also begins to separate with piston arm 100 at this moment.

According to embodiments of the invention, after the disposable syringe 10 with locking needle safety lid of the present invention is finished injection, piston arm 100 can be interior by removal from syringe body 400, and piston arm 100 can't be sticked in piston end again, thus, the present invention has effectively reached the purpose of guaranteeing that syringe only can single uses, and the issuable variety of problems of needle sharing of effectively having avoided commonly seeing.

In sum, reach technology, means and the effect that predetermined purpose is taked in order to make your juror can further understand the present invention, more than be about detailed description of the present invention and accompanying drawing, believe purpose of the present invention, feature and characteristics, when getting thus one deeply and concrete understanding, yet appended accompanying drawing and above demonstration example only provide the reference of the explaining the technology of the present invention thought usefulness with explanation, are not to the present invention's limitr in addition.

The disclosed disposable syringe with locking needle safety lid, its protruding tip is disposed on the piston end, and most advanced and sophisticated flange configurations is on piston arm.When fixed muffle around be arranged at protruding tip around the time, piston arm and piston end can rely on protruding tip and the most advanced and sophisticated flange of mutually engaging, and are solid-located.If user continues the propelling piston arm, so that protruding tip is when being pushed out in the fixed muffle, piston end will begin to separate with piston arm.Thus, the present invention reaches the effect of guaranteeing that syringe only can be used by single.

Above-described embodiment only is explanation technological thought of the present invention and characteristics, its purpose makes the personage who has the knack of this skill can understand content of the present invention and is implementing according to this, when can not with restriction claim of the present invention, the equalization of namely generally doing according to disclosed spirit changes or modifies, and must be encompassed in the claim of the present invention.

Claims

1. the disposable syringe with locking needle safety lid is characterized in that, comprising:

One piston arm;

One piston end;

One fixed muffle is outside this piston arm that is arranged at part and this piston end;

One syringe body is in order to hold this piston arm, this piston end and this fixed muffle, wherein, when a user this piston arm of pulling back first, when advancing again this piston arm, with so that this piston end leaves the sheathed scope of this fixed muffle, simultaneously so that this piston end on this piston arm, separate; And

One locking needle safety lid, be arranged at outside this syringe body, when this user rotated this locking needle safety lid, an injection needle of this disposable syringe was sticked in this locking needle safety lid, to prevent the use that again bounces back of this locking needle safety cover.

2. the disposable syringe with locking needle safety lid as claimed in claim 1 is characterized in that having at least one protruding tip on this piston end, and this protruding tip is sticked in the most advanced and sophisticated flange on this piston arm.

3. the disposable syringe with locking needle safety lid as claimed in claim 1 is characterized in that having at least one sleeve rib on the outer surface of this fixed muffle, and this sleeve rib limits this fixed muffle by forward impelling.

4. the disposable syringe with locking needle safety lid as claimed in claim 1 is characterized in that, this fixed muffle includes:

One inner sleeve, its material are plastic cement; And

One outer sleeve, its material are synthetic rubber.

5. the disposable syringe with locking needle safety lid as claimed in claim 1 is characterized in that, more include a stop block on this syringe body, this stop block is in order to avoid this fixed muffle to withdraw from this syringe body.

6. the disposable syringe with locking needle safety lid as claimed in claim 1 is characterized in that, has one on this piston arm and uses indicator, and this use indicator is in order to show whether this syringe was used.

7. the disposable syringe with locking needle safety lid as claimed in claim 1 is characterized in that, more comprise a rod member on this piston arm, this piston arm is sticked in this piston end by this rod member that is inserted in this piston end.

8. the disposable syringe with locking needle safety lid as claimed in claim 7 is characterized in that, this rod member and the mutually corresponding setting of this piston end are to prevent this piston end whiz on this piston arm.

9. the disposable syringe with locking needle safety lid is characterized in that, comprising:

One piston end has at least one protruding tip on this piston end;

One piston arm, this piston arm relies on this at least one protruding tip and is sticked in this piston end;

One fixed muffle is outside this protruding tip that is arranged at this piston end;

One syringe body is in order to hold this piston arm, this piston end and this fixed muffle; And

One locking needle safety lid, be arranged at outside this syringe body, when a user rotated this locking needle safety lid, an injection needle of this disposable syringe was sticked in this locking needle safety lid, to prevent the use that again bounces back of this locking needle safety cover.

10. the disposable syringe with locking needle safety lid as claimed in claim 9 is characterized in that having at least one sleeve rib on this fixed muffle, and this sleeve rib limits this fixed muffle by forward impelling.

11. the disposable syringe with locking needle safety lid as claimed in claim 9 is characterized in that, this disposable syringe with locking needle safety lid before use with use after, this piston end all is positioned at this syringe body.

12. the disposable syringe with locking needle safety lid as claimed in claim 9 is characterized in that, at this after fixedly the sheathed scope of this fixed muffle is left at the tip, and this fixing most advanced and sophisticatedly on this piston arm, separates.

13. the disposable syringe with locking needle safety lid as claimed in claim 9 is characterized in that, more includes a stop block on this syringe body, withdraws from this syringe body in order to avoid this fixed muffle.

14. the disposable syringe with locking needle safety lid as claimed in claim 9 is characterized in that, when this user this piston arm of pulling back first, when pushing this piston arm, the sheathed scope of this fixed muffle is left at the fixedly tip on this piston end again.

15. the disposable syringe with locking needle safety lid as claimed in claim 9 is characterized in that, has one on this piston arm and uses indicator, this use indicator is in order to show whether this syringe was used.

16. the disposable syringe with locking needle safety lid is characterized in that, comprising:

One piston arm;

One piston end has at least one protruding tip on this piston end, be sticked in this piston arm to rely on this protruding tip:

One fixed muffle has at least one sleeve rib, and when this protruding tip was sticked in this piston arm, this fixed muffle was around being arranged at outside this protruding tip;

One syringe body holds this piston arm, this piston end and this fixed muffle, has a stop block on this syringe body, and this stop block is in order to avoid this fixed muffle to withdraw from this syringe body; And

One locking needle safety lid, be arranged at this syringe body outside, when a user rotated this locking needle safety lid, an injection needle of this disposable syringe was sticked in this locking needle safety lid, to prevent the use that again bounces back of this locking needle safety cover.

17. the disposable syringe with locking needle safety lid as claimed in claim 16 is characterized in that, this disposable syringe with locking needle safety lid before use with use after, this piston end all is positioned at this syringe body.

18. the disposable syringe with locking needle safety lid as claimed in claim 16 is characterized in that, at this after fixedly the sheathed scope of this fixed muffle is left at the tip, and this fixing most advanced and sophisticatedly on this piston arm, separates.

19. the disposable syringe with locking needle safety lid as claimed in claim 16 is characterized in that, more includes a stop block on this syringe body, withdraws from this syringe body in order to avoid this fixed muffle.

20. the disposable syringe with locking needle safety lid as claimed in claim 16 is characterized in that, when this user pushed this piston arm, the sheathed scope of this fixed muffle was left at the fixedly tip on this piston end.