CN200954297Y - Disposable safety injector - Google Patents
Disposable safety injector Download PDFInfo
- Publication number
- CN200954297Y CN200954297Y CN 200620134539 CN200620134539U CN200954297Y CN 200954297 Y CN200954297 Y CN 200954297Y CN 200620134539 CN200620134539 CN 200620134539 CN 200620134539 U CN200620134539 U CN 200620134539U CN 200954297 Y CN200954297 Y CN 200954297Y
- Authority
- CN
- China
- Prior art keywords
- ditch
- ring
- fluid cylinder
- injecting device
- push rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model is a disposal security injection device, comprising a syringe, an injection head, a pushing rod and a sleeve ring, the injection head is combined with a tenon at the front end of the liquor cylinder. A buckling part is arranged at the interior of the tenon. And a homocentric C-shaped tearing ditch and a ring-shaped tearing ditch are arranged at an interface of the tenon, the top wall of the liquor cylinder as well as the interface of the top wall with the ring of the external cylinder. At the front end of the pushing rod, an axially-extended post at a clip is fixed and the post passes through and fixes the sleeve ring for staying in the liquor cylinder movably. The pushing rod is moved forward and the sleeve ring props against the top wall and the buckle is fixed at a buckling section and the pushing rod moved forward, the C-shaped tearing ditch is torn by force application to form a torque upon the portion without ditch; the thinner section of the tearing ring ditch is broken with breakage status along the perimeter. So pull back the pushing rod to separate the tearing ditch from the liquor cylinder after acceptance of the force application.
Description
Technical field
This utility model is a kind of injection device, refers to a kind of disposable safety injecting device especially.
Background technology
Injection device, for example syringe cylinder occupies very big proportion in medical device, is difficult to the disease for the treatment of especially more in recent years, spreading of acquired immune deficiency syndrome (AIDS) or all types of hepatitis for example, so that constantly taken place by the case of infectable infection.Therefore, also cause the attention of each bound pair medical device, especially with syringe cylinder for very, so the disposable syringe cylinder of tool self-destroying function is to become inevitable and unavoidable trend.
On the whole existing high-safety injection tube, is by syringe needle, fluid cylinder and push rod be combined into.For example TaiWan, China is that " two formulas retraction safety syringe-drums " patent case of No. 540385 is an example in the notification number of on July 1st, 2003 bulletin, it has and can be provided with needle stand for cylindrical shell (fluid cylinder) end that push rod is inserted, this needle stand is formed with between periphery and cylindrical shell tears groove, needle stand be provided with one pertusate in seat, push rod can place the button piece that is buckled in perforation and constitutes a kind of safety syringe-drum being provided with respect to middle seat one end.So that after can fixing by push rod termination and needle stand, destroy simultaneously and tear groove when push rod retracts needle stand, make the needle stand that is fixed with entry needle move to inner barrel, with the unexpected injury generation that prevents that entry needle from exposing.
And the significant disappearance of this case is, and is thicker as if tearing the ditch slot thickness, for example 0.12mm, in the ejection formation process, this molten plastic liquid can pass through this gap smoothly, by with form pertusate in the seat, only it is difficult to because of the ditch slot thickness is thicker by by outside destroy, and loses disposable purpose.If tear the groove thinner thickness, 0.06mm for example, though it is easily by tearing groove by outside destroy, molten plastic liquid will be difficult to by crack between so thin, so that seat is difficult to the one ejection formation in pertusate.Moreover the plane of weakness design because of this fluid cylinder end face is torn groove may cause this needle stand in injection or transportation, via the moment that external force produced, and causes the situation of rocking to take place, even because of tearing the situation generation that breaking of groove will cause leakage.
In view of this, this utility model applicant is in line with the experience of being engaged in safety injector design and production and marketing for many years, phase can overcome many disappearances of aforementioned high-safety injection tube, through experiment and test repeatedly, and then develops and " disposable safety injecting device " of the present utility model.
The utility model content
This utility model main purpose is to provide a kind of disposable safety injecting device, it is by a fluid cylinder, one syringe needle, one push rod, reach a collar and form, wherein, this syringe needle is the plug tenon that is incorporated into the fluid cylinder front end, this plug tenon inside is provided with a snapping portion, and itself and fluid cylinder front end roof junction and roof and outer side neck ring junction are respectively equipped with that a concentric C shape is torn ditch and an annular is torn ditch; The shaft front end of this push rod extends axially a roofbolt with a clamping part, and it is to pass through and fix this collar, so that be placed in the fluid cylinder slippingly; By pushing away before the push rod, make the collar prop up roof, clamping part then is snapped in the snapping portion in the plug tenon, pushes away before then push rod being continued, and makes this C shape tear ditch and tears because of stressed, do not form a moment to establishing the groove position simultaneously, thereby thin position thereby fracture that order is torn ditch to annular that should the position, and spread along periphery and to be big portion breaking state, at this moment, push rod is pulled back, make this annular tear the complete and fluid cylinder segregator in the stressed back of ditch.
This utility model secondary objective is to provide a kind of disposable safety injecting device, and it comprises a locating ring in addition, and it is to be socketed between plug tenon and the tube ring, and touches the fluid cylinder roof.Perhaps, the prominent seat ring of establishing of the needle stand back segment of this syringe needle, it is to be socketed between plug tenon encircles with tube, and the rear has the end of splaying, it is to touch the fluid cylinder roof.
The another purpose of this utility model is to provide a kind of disposable safety injecting device safety injector, and wherein this snapping portion is a snap ring, and clamping part then is an oblique outer arrow shape coak of opening, and this coak can be snapped in this snap ring.
This utility model purpose again is to provide a kind of disposable safety injecting device safety injector, wherein this fluid cylinder open rearward end is provided with a stopper section, it is to be the T-Ring to inner process, the club head of push rod is made of two forward and backward fins, and this two fin can be snapped in T-Ring and locate.
Another purpose of this utility model is to provide a kind of disposable safety injecting device safety injector, wherein this roofbolt is radially dashed forward and is established a sliding part, it is that forward and backward ring plate by two periphery tool bevels is constituted, so that common double team collar rear annular distance, when the collar props up the roof of fluid cylinder, this two ring plate enters in the ring casing, and can slide within it, makes roofbolt be continued reach.
The another purpose of this utility model is to provide a kind of disposable safety injecting device safety injector, wherein this push rod is that shaft leading portion at the roofbolt rear is provided with a club head and one first broken part in regular turn, this club head clip is in the stopper section of fluid cylinder open rearward end, and make syringe needle, push rod leading portion and the collar be accommodated in the fluid cylinder, in first broken part push rod is fractureed immediately.Moreover this rear, first broken part is provided with a piston part and one second broken part in regular turn, and this piston part is to be embedded at the fluid cylinder front opening, and in second broken part push rod is fractureed.
This utility model purpose again is to provide a kind of disposable safety injecting device safety injector, wherein pull a little in this snapping portion and the C shape prominent top of establishing of roof inner face of tearing ditch, to push away before the convenient push rod, make clamping part be snapped in the interior snapping portion of plug tenon, and pull and pull a little in this top in the roofbolt top, make this C shape tear ditch and tear gradually, do not form a moment to establishing the groove position simultaneously, thereby order is torn thin position of ditch thereby fracture to annular that should the position because of stressed.Wherein to pull a little be to be positioned at this snapping portion and C shape is torn the ditch middle position on this top.And pulling in this top a little is to be salient point or fin.
So via enforcement of the present utility model, it can make syringe needle be unlikely really and before push away after injection is reclaimed again, and prevent injection device effectively utilize the puzzlement that is produced again.And locating ring is or the end design of splaying of syringe needle back segment seat ring, is to be socketed between plug tenon encircles with tube, and it can be avoided because of having the situation that the plane of weakness designing institute of tearing ditch may cause plug tenon to rock, and further has the effect of leak-stopping.Moreover, after injection and injection, this fluid cylinder both ends open can be respectively club head and a tube piston part is sealed, and the syringe needle of order after using there be not possibility of exposing fluid cylinder extremely, thus the safety after the increase use.Into person is arranged especially, of the present utility model with intracardiac C shape tear ditch and the annular tear ditch design, can be by then retracting institute's externally applied forces by push rod has before been pushed away, and make roof fully separate with fluid cylinder together with plug tenon, syringe needle, and the formation self-destroying function really is a ware big good structure not seen before.
Description of drawings
Be further to disclose technology contents of the present utility model, at first see also graphic, wherein:
Fig. 1 is the three-dimensional exploded view of this utility model injection device;
Fig. 2 is the axonometric chart of this utility model group after upright;
Fig. 3 a and Fig. 3 b are the top view and the front sectional elevation of this utility model cartridge case;
Fig. 4 draws the profile of medicinal liquid for this utility model fluid cylinder;
The profile that Fig. 5 is injecting for this utility model;
Fig. 6 is injected to the profile of the end for this utility model;
Fig. 7 is the prominent local amplification profile that is snapped in snap ring of bar of the present utility model;
Fig. 8 a and Fig. 8 b be this utility model fluid cylinder tear the local amplification profile of ditch in fracture process;
Sketch map when Fig. 9 pulls back for this utility model push rod;
The sketch map that Figure 10 fractures in the fluid cylinder open rearward end for this utility model push rod;
Figure 11 is nested in the sketch map of fluid cylinder front opening for the bar plug of this utility model push rod;
Figure 12 is another embodiment three-dimensional exploded view of this utility model safety injector;
Figure 13 is the profile after Figure 12 this utility model group is stood.
The specific embodiment
As shown in Figures 1 to 4, basically, disposable syringe device of the present utility model is by a fluid cylinder 1, one syringe needle 2, one push rods 3, and a collar 4 is formed.
Wherein, fluid cylinder 1 is a hollow form, and its chamber of inner tool 11 is for ccontaining medicinal liquid, and its rear then is provided with a pair of fin 12, so that supply the usefulness of user gripping.And the plug tenon 14 of less and central tool one through hole 141 of fluid cylinder 1 front end roof 13 tools, one external diameter.Shown in Fig. 3 a and Fig. 3 b, then be provided with the tool thickness between this plug tenon 14 and roof 13 and roof 13 and the outer side neck ring 15 respectively and change, for example the C shape of 0.12mm and 0.6mm is torn ditch 16 and an annular is torn ditch 17.In addition, these plug tenon 14 inwalls are inwardly prominent establishes a snapping portion 142, and its and C shape are torn roof 13 inner faces of ditch 16, and for example C shape tears that ditch 16 middle positions are prominent to be established one and push up and pull a little 131.Wherein, this top 131 purposes that are provided with of pulling a little are to be the concentrated usefulness of the application of force, therefore, can be salient point or fin during enforcement, tear tearing of ditch 16 in order to this C shape.
In addition, the inwardly prominent stopper section 18 of establishing of these chamber 11 nearly open rearward end, T-Ring for example, it is the buckle with the forward and backward bar wing 331,332 of two periphery tool bevels of the club head 33 of push rod 3, in order to the location of push rod 3 and fractureing of bar neck 37.
Particularly, in addition a locating ring 5 is socketed on plug tenon 14 and encircles between 15 with tube, it must be made for hard or soft material, but with soft elastic material, for example elastomeric material is good.In addition, this locating ring 5 is to touch roof 13, can avoid taking place because of the situation that the two plane of weakness designing institutes of tearing ditch 16,17 may cause this plug tenon 14 to rock, and tears ditch 16,17 as if two simultaneously and breaks accidentally, and this locating ring 5 is also further born the effect of leak-stopping.
So this locating ring 5 is provided with purpose and is: (1) prevents that plug tenon 14 is subjected to the moment that external force produces and causes two crackings of tearing ditch 16,17; And (2) prevent that two tear the leakage of medicament behind ditch 16,17 crackings, even if because of accident causes slight leakage, makes this utility model still not lose the function of injection.
Wherein, this club head 33 is that 331,332 of forward and backward fins by two periphery tool bevels constitute, and in the stopper section 18, is first broken part 37 of retraction shape in order to these club head 33 rear external diameters in order to push rod 3 clips, and for example the bar neck fractures.And sliding part 35 to be 351,352 of forward and backward ring plates by two periphery tool bevels constitute so that the annular distance 42 of the common double team collar 4 rear walls.
And this utility model is provided with in these 37 rears, first broken part and is provided with second broken part 39 that a piston part 38 and also is the retraction shape in regular turn, for example fills in neck.
The collar 4 is made for soft material, only be not limited to elastomeric material, its outside dimension is corresponding to tube chamber 11, close so that can closely fill in, and an annular distance 42 is opened at its inner ring casing 41 rears, for and the aforesaid two ring wings 351,352 sockets, and the front end less axis hole 43 of tool one size then is so that passing for clamping part 36.Wherein, this ring casing 41 has suitable depth, so that two ring plates 351,352 of sliding part 35 can be slided within it.
Please consult graphic again, this utility model is sleeved on roofbolt 34 with the collar 4 earlier in group immediately, clamping part 36 is passed by axis hole 43, and the two ring wings 351,352 are socketed on annular distance 42, then be nested into push rod 3 in the tube chamber 11 of fluid cylinder 1 together with the collar 4, and syringe needle 2 is nested in plug tenon 14 by needle stand 22, promptly presents as Fig. 2 and axonometric chart and profile shown in Figure 4, and can be the medicinal liquid state that draws.
As shown in Figure 5, draw medicinal liquid after, and injection or when injection are with push rod before pointing 3, make 11 reaches along the tube chamber of its front end collar 4, and the extruding medicinal liquid, make it pass through plug tenon 14 and syringe needle 2, and are injected in the body.
As shown in Figure 6, when the collar 4 together with push rod 3 pushing and withstanding to fluid cylinder 1 front end roof 13, make extruding that medicinal liquid is, and clamping part 36 stretched in the through hole 13, it is minimum that medicinal liquid remnants are reduced to.
When injected appropriate after, as shown in Figure 7, will push away before this push rod 3, make clamping part 36 be snapped in snapping portion 142 in the plug tenon 14, and the two forward and backward ring wings 351,352 of sliding part 35 prop up roof 13 because of the collar 4, and move on, and enter respectively in the ring casing 41.
Shown in Fig. 8 a, before continuing, push rod 3 pushes away, its roofbolt 34 top is in advance pulled and is pulled a little 131 in the top, making this C shape tear ditch 16 tears gradually because of stressed, do not form a moment to establishing the groove position simultaneously, thereby order is torn ditch 17 thin position thereby fractures to annular that should the position, and spreads along periphery, does not only form complete breaking state.
Shown in Fig. 8 b, at this moment, push rod 3 is inwardly withdrawn, make this annular tear ditch 17 and separate with fluid cylinder 1 fully after stressed.As shown in Figure 9, to tube chamber 11, stopper section 18 and club head 35 formation clips up to tube chamber 11 open rearward end make push rod 3 unlikely possibilities of pulling back again to this push rod 3, can effectively prevent to re-use together with the collar 4, plug tenon 14, locating ring 5 and syringe needle 2 post-tensionings.
As shown in figure 10, at this moment, can push rod 3 be fractureed via 37 places, first broken part, making the some of syringe needle 2, push rod 3 and the collar 4 is to reside in the chamber 11.
As shown in figure 11, tube piston part 38 with the rear push-rod 3 that is about to fracture is embedded by fluid cylinder 1 front opening, via 39 places, second broken part push rod 3 is fractureed, and this fluid cylinder 1 both ends open is respectively club head 33 and a tube piston part 38 is sealed, even if therefore fluid cylinder 1 is abandoned, the exhausted puzzlement of not having on the safety.
As Figure 12 and shown in Figure 13, be another embodiment of this utility model disposable safety injecting device, its assembly that is same as previous embodiment is same names and label representative all, be and can be rated as unique difference, present embodiment does not have the setting of locating ring, but at the then prominent seat ring 24 of establishing of needle stand 22 back segments of syringe needle 2, it is to be socketed between plug tenon 14 and the tube ring 15, and the rear has the end 241 of splaying.
This end 241 of splaying is to touch roof 16, and this measure can be avoided taking place because of the situation that the two plane of weakness designing institutes of tearing ditch 16,17 may cause this plug tenon 14 to rock, and tears ditch 16,17 as if two simultaneously and breaks accidentally, and this end 241 of splaying is also further born the effect of leak-stopping.
That this utility model disclosed is a kind of of preferred embodiment, and patent right category of the present utility model is not all taken off in partial such as change or modification and come from technological thought of the present utility model and be easy to the person of knowing by inference by the people who has the knack of this skill.
Claims (12)
1. disposable safety injecting device, it is by a fluid cylinder, one syringe needle, one push rod, reach a collar and form, it is characterized in that this syringe needle is the plug tenon that is incorporated into the fluid cylinder front end, this plug tenon inside is provided with a snapping portion, and itself and fluid cylinder front end roof junction and roof and outer side neck ring junction are respectively equipped with that a concentric C shape is torn ditch and an annular is torn ditch; The shaft front end of this push rod extends axially a roofbolt with a clamping part, and it is to pass through and fix this collar, so that be placed in the fluid cylinder slippingly.
2. disposable safety injecting device as claimed in claim 1 is characterized in that described this torn ditch thickness.
3. disposable safety injecting device as claimed in claim 1 is characterized in that other comprises a locating ring, and it is to be socketed between plug tenon and the tube ring, and touches the fluid cylinder roof.
4. disposable safety injecting device as claimed in claim 1 is characterized in that, described this snapping portion is a snap ring, and clamping part then is an oblique outer arrow shape coak of opening, and this coak is snapped in this snap ring.
5. disposable safety injecting device as claimed in claim 1, it is characterized in that described this fluid cylinder open rearward end is provided with a stopper section, it is to be the T-Ring to inner process, the club head of push rod is made of two forward and backward fins, and this two fin is snapped in T-Ring and locatees.
6. disposable safety injecting device as claimed in claim 1 is characterized in that, the radially prominent sliding part of establishing of described this roofbolt, and it is that forward and backward ring plate by two periphery tool bevels is constituted.
7. disposable safety injecting device as claimed in claim 1 is characterized in that, the prominent seat ring of establishing of the needle stand back segment of described this syringe needle, and it is to be socketed between plug tenon encircles with tube, and the rear has the end of splaying, it is to touch the fluid cylinder roof.
8. disposable safety injecting device as claimed in claim 1, it is characterized in that, described this push rod is that the shaft leading portion at the roofbolt rear is provided with a club head and one first broken part in regular turn, this club head clip is in the stopper section of fluid cylinder open rearward end, and make syringe needle, push rod leading portion and the collar be accommodated in the fluid cylinder, in first broken part push rod is fractureed immediately.
9. disposable safety injecting device as claimed in claim 8 is characterized in that, described this rear, first broken part is provided with a piston part and one second broken part in regular turn, and this piston part is to be embedded at the fluid cylinder front opening, and in second broken part push rod is fractureed.
10. disposable safety injecting device as claimed in claim 1 is characterized in that, described this snapping portion and C shape are torn the prominent top of establishing of roof inner face of ditch and pulled a little.
11. disposable safety injecting device as claimed in claim 10 is characterized in that, pulling in described this top a little is to be positioned at this snapping portion and C shape is torn the ditch middle position.
12. disposable safety injecting device as claimed in claim 10 is characterized in that, pull and a little be salient point or fin in described this top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620134539 CN200954297Y (en) | 2006-08-18 | 2006-08-18 | Disposable safety injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620134539 CN200954297Y (en) | 2006-08-18 | 2006-08-18 | Disposable safety injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200954297Y true CN200954297Y (en) | 2007-10-03 |
Family
ID=38772882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620134539 Expired - Lifetime CN200954297Y (en) | 2006-08-18 | 2006-08-18 | Disposable safety injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200954297Y (en) |
-
2006
- 2006-08-18 CN CN 200620134539 patent/CN200954297Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |