CN207886483U - Safety injector and release mechanism for it - Google Patents
Safety injector and release mechanism for it Download PDFInfo
- Publication number
- CN207886483U CN207886483U CN201720297602.7U CN201720297602U CN207886483U CN 207886483 U CN207886483 U CN 207886483U CN 201720297602 U CN201720297602 U CN 201720297602U CN 207886483 U CN207886483 U CN 207886483U
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- Prior art keywords
- needle
- component
- protection component
- release mechanism
- guiding locking
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Abstract
The utility model discloses a kind of safety injector and the release mechanism for it.Safety injector (1) includes：Syringe (2), with proximal end (3), distal end (4) and between proximal end and distal end and limit longitudinal axis chamber (5), hold needle portion (6) from distal end it is distally extending；Plunger (7) has from the proximal end of syringe and is inserted into the distal part in syringe and the portions of proximal outside syringe；Needle (8), with the portions of proximal held from the distal side insertion for holding needle portion in the needle passageway in needle portion and positioned at the distal part held outside needle portion, needle is chamber in fluid communication hollow and with syringe；With release mechanism (9), installed at least partially about needle portion is held, in the unactuated position of release mechanism, the distal part of needle is not covered by release mechanism, it is covered by release mechanism in at least distal end of actuated position, needle, to prevent from surprisingly contacting with the distal end of needle.Release mechanism can be first installed, then needle is installed when assembling syringe according to the utility model, only need to calibrate a needle in this way, and needle is will not interfere with before release mechanism is activated.
Description
Technical field
The utility model is related to a kind of safety injector and for the release mechanism of safety injector.
Background technology
The syringe being previously used, which is surprisingly stabbed, can infect disease.Therefore, there is teaching in prior art actuatable formula to pacify
The syringe of full shield, safety guard can be positioned to protection and surprisingly be contacted with needle point after syringe use.The prior art
Safety guard is equipped with the block piece of protection needle point, which has needle passageway, need to make needle during assembling syringe
Across the needle passageway of block piece to install the safety guard for carrying block piece, at this time due to inevitably touching needle during the installation process
And need to calibrate needle again, this is to take and be easy that there are errors.
Utility model content
The utility model aims to solve the problem that the above-mentioned problems in the prior art.
On the one hand, the utility model provides a kind of safety injector, including：Syringe, with proximal end, distal end and close
The chamber for holding between distal end and limiting longitudinal axis, it is distally extending from distal end to hold needle portion；Plunger has from the close of syringe
The distal part in syringe and the portions of proximal outside syringe are inserted into end；Needle has to be inserted into from the distal side for holding needle portion and holds needle
Portions of proximal in the needle passageway in portion and positioned at the distal part held outside needle portion, needle is hollow and the chamber fluid with syringe connects
It is logical；And release mechanism, it is installed at least partially about needle portion is held, in the unactuated position of release mechanism, the distal part of needle
Do not covered by release mechanism, covered by release mechanism in at least distal end of the actuated position of release mechanism, needle, with prevent with
The distal end of needle surprisingly contacts.
Preferably, release mechanism holds the axially engaging of needle portion at least partially about described.
Preferably, release mechanism can be rotated freely around needle portion is held.
Preferably, release mechanism includes guiding locking component and protection component, and guiding locking component is at least partially about holding
Needle portion is installed, and at least partially about holding, needle portion is arranged protection component and positioned at the distal side of guiding locking component, protection component can
Actuated position is moved to from unactuated position, at unactuated position, the distal part of needle is not protected component covering, is activating
When position, at least distal end of needle is covered by protection component, and guiding locking component and protection component have for that will protect structure
Part is releasably held in the mechanism of unactuated position, for guiding protection component to move to actuated position from unactuated position
Mechanism and for component will to be protected to be locked in the mechanism of actuated position.
Preferably, guiding locking component include around the sleeve part and outside from sleeve part for holding the installation of needle portion along longitudinal direction to
The guiding locking portion that nearside extends.
Preferably, protection component is included in the distal loop of the sleeve part of guiding locking component around the sleeve for holding the setting of needle portion
Portion, the arm extended along longitudinal direction to nearside from the outside of the sleeve part of protection component and the finger in the proximal end of arm contact
Portion.
Preferably, include guiding locking component for protection component to be releasably held in the mechanism of unactuated position
Towards the longitudinally disposed convex block in shrapnel side on the arm of shrapnel in guiding locking portion and protection component, in unactuated position
When, at least part of the shrapnel in guiding locking portion receives in the distal side of convex block, and component will be protected to be maintained at and do not activate position
It sets, convex block, which is shaped as, to be allowed when applying finger power distad to the finger contact portion of protection component, in guiding locking portion
Shrapnel gets over upper protruding block, and component will be protected to be discharged from unactuated position.
Preferably, include guiding locking structure for guiding protection component to move to the mechanism of actuated position from unactuated position
At least one longitudinal guide in the guiding locking portion of part and at least one corresponding longitudinal flange on the arm of protection component,
At unactuated position, the distal part of longitudinal flange is located in longitudinal guide, and longitudinal guide and longitudinal flange are shaped as fair
When Xu Xiang protects the finger contact portion of component to apply finger power distad, longitudinal flange is distad slided along longitudinal guide,
Until finger contact portion touches guiding locking portion and backstop.
Preferably, the mechanism for protection component to be locked in actuated position includes the guiding locking portion of guiding locking component
On shrapnel with protection component arm on towards the longitudinally disposed convex block in shrapnel side and protect component proximal end set
At least one recessed portion being arranged in correspondence in the guiding locking portion of at least one guide protrusion part and locking component set, is being protected
When shield component moves to actuated position from unactuated position, shrapnel can cross convex block and be stuck in the nearside of convex block, and be oriented to
Lug boss receives in recessed portion, to make protection component be locked in actuated position in a manner of forming gradient with longitudinal axis.
Preferably, protruding portion or recessed portion, protruding portion or recessed portion engagement are equipped on the inside of the sleeve part of guiding locking component
The recessed portion or protruding portion formed on the outside of needle portion is held, the sleeve part of guiding locking component is axially fastened on syringe.
Preferably, safety injector further includes needle housing, and needle housing is for covering needle and being shaped as the shape with release mechanism
It is adapted.
Preferably, the inner surface of needle housing is equipped at least a pair of of rib, the guiding of at least a pair of of the rib and guiding locking component
At least one flange on sticking department is slidably engaged.
Preferably, the inner surface of needle housing is additionally provided with a pair of of rib, the pair of rib on the sleeve part of guiding locking component
Wedge shaped projection squeezes engagement.
Preferably, the outer surface of needle housing is equipped with the tread plate of protrusion.
Preferably, the sleeve part of component is protected to be formed as the hat shape with top drilling, the aperture of top drilling, which is less than, to be protected
Protect the internal diameter of the sleeve part main body of component.
Preferably, finger contact portion is shaped as the proximal end plate that laterally outward side extends from the arm of protection component
Portion.
On the other hand, the utility model provides a kind of release mechanism for safety injector, release mechanism at least portion
Divide and hold the installation of needle portion around safety injector, in the unactuated position of release mechanism, the distal part of needle is not by release mechanism
Covering, is covered in at least distal end of the actuated position of release mechanism, needle by release mechanism, to prevent the distal end with needle
Unexpected contact.
Preferably, release mechanism engages at least partially about needle portion axial direction is held.
Preferably, release mechanism can be rotated freely around needle portion is held.
Preferably, release mechanism includes guiding locking component and protection component, and guiding locking component is at least partially about holding
Needle portion is installed, and at least partially about holding, needle portion is arranged protection component and positioned at the distal side of guiding locking component, protection component can
Actuated position is moved to from unactuated position, at unactuated position, the distal part of needle is not protected component covering, is activating
When position, at least distal end of needle is covered by protection component, and guiding locking component and protection component have for that will protect structure
Part is releasably held in the mechanism of unactuated position, for guiding protection component to move to actuated position from unactuated position
Mechanism and for component will to be protected to be locked in the mechanism of actuated position.
Preferably, guiding locking component include around the sleeve part and outside from sleeve part for holding the installation of needle portion along longitudinal direction to
The guiding locking portion that nearside extends.
Preferably, protection component is included in the distal loop of the sleeve part of guiding locking component around the sleeve for holding the setting of needle portion
Portion, the arm extended along longitudinal direction to nearside from the outside of the sleeve part of protection component and the finger in the proximal end of arm contact
Portion.
Preferably, include guiding locking component for protection component to be releasably held in the mechanism of unactuated position
Towards the longitudinally disposed convex block in shrapnel side on the arm of shrapnel in guiding locking portion and protection component, in unactuated position
When, at least part of the shrapnel in guiding locking portion receives in the distal side of convex block, and component will be protected to be maintained at and do not activate position
It sets, convex block, which is shaped as, to be allowed when applying finger power distad to the finger contact portion of protection component, in guiding locking portion
Shrapnel gets over upper protruding block, and component will be protected to be discharged from unactuated position.
Preferably, include guiding locking structure for guiding protection component to move to the mechanism of actuated position from unactuated position
At least one longitudinal guide in the guiding locking portion of part and at least one corresponding longitudinal flange on the arm of protection component,
At unactuated position, the distal part of longitudinal flange is located in longitudinal guide, and longitudinal guide and longitudinal flange are shaped as fair
When Xu Xiang protects the finger contact portion of component to apply finger power distad, longitudinal flange is distad slided along longitudinal guide,
Until finger contact portion touches guiding locking portion and backstop.
Preferably, the mechanism for protection component to be locked in actuated position includes the guiding locking portion of guiding locking component
On shrapnel with protection component arm on towards the longitudinally disposed convex block in shrapnel side and protect component proximal end set
At least one recessed portion being arranged in correspondence in the guiding locking portion of at least one guide protrusion part and locking component set, is being protected
When shield component moves to actuated position from unactuated position, shrapnel can cross convex block and be stuck in the nearside of convex block, and be oriented to
Lug boss receives in recessed portion, to make protection component be locked in actuated position in a manner of forming gradient with longitudinal axis.
Preferably, protruding portion or recessed portion, protruding portion or recessed portion engagement are equipped on the inside of the sleeve part of guiding locking component
The recessed portion or protruding portion formed on the outside of needle portion is held, the sleeve part of guiding locking component is axially fastened on syringe.
Preferably, the sleeve part of component is protected to be formed as the hat shape with top drilling, the aperture of top drilling, which is less than, to be protected
Protect the internal diameter of the sleeve part main body of component.
Preferably, finger contact portion is shaped as the proximal end plate that laterally outward side extends from the arm of protection component
Portion.
According to the utility model, due to release mechanism holding in needle portion mounted on syringe, when assembling syringe, Neng Gouxian
Release mechanism is installed, then needle is installed, only need to calibrate a needle in this way, and needle is will not interfere with before release mechanism is activated.
According to the utility model, the needle portion of holding that release mechanism can surround syringe rotates freely, in order to firmly believe needle point training
Face.
According to the utility model, release mechanism is with the guide protrusion part and guiding locking component at protection member proximal
The gradient that recessed portion compound tense is formed, achievees the purpose that needle point secundly, and needle point shadow is made to ensconce in protective cover.
In addition, safety injector according to the present utility model is simple in structure compared with the existing technology, surface is smooth, can be singlehanded
It operates and more preferable to the protective of syringe needle, is surprisingly stabbed caused by prevent syringe needle.
Description of the drawings
Fig. 1 is according to a kind of stereogram of the safety injector of embodiment of the utility model, wherein safety injector band
There is needle housing.
Fig. 2 is the side view of safety injector shown in FIG. 1, and position is not activated wherein removing needle housing and release mechanism and being in
It sets.
Fig. 3 is the A-A sectional views of Fig. 2.
Fig. 4 is the partial enlarged view of Fig. 3.
Fig. 5 is stereogram when safety injector shown in FIG. 1 removes needle housing.
Fig. 6 is the side view of safety injector shown in FIG. 1, wherein removing needle housing and release mechanism is in actuating position
It sets.
Fig. 7 is the B-B sectional views of Fig. 6.
Fig. 8 is the C-C sectional views of Fig. 6.
Fig. 9 is the stereogram according to a kind of guiding locking component of embodiment of the utility model.
Figure 10 is the stereogram according to a kind of protection component of embodiment of the utility model.
Figure 11 is according to a kind of stereogram of the needle housing of embodiment of the utility model.
Figure 12 is the stereogram that the needle housing of Figure 11 is engaged with guiding locking component.
Specific implementation mode
Structure and the work of the safety injector, particularly its release mechanism of the utility model are explained below with reference to accompanying drawings
Principle.It will be understood, however, to one skilled in the art, that the release mechanism of the utility model is not limited only to syringe, it can also
Applied to other medical instruments, such as blood taking needle etc.." nearside " mentioned in this article, " distal side ", " proximal end " and " distal end " are
It is " close close to the side for the medical staff for carrying out injection operation or one end for medical staff carries out injection operation
Side " and " proximal end ", and side or one end far from the medical staff for carrying out injection operation are " distal side " and " distal end ".
Fig. 1 is according to a kind of stereogram of the safety injector of embodiment of the utility model, wherein safety injector band
There is needle housing.Safety injector 1 includes syringe 2, plunger 7, needle 8, release mechanism 9 and optional needle housing 26.Syringe 2 have proximal end 3,
Distally 4 and between proximal end 3 and distal end 4 and the chamber 5 of longitudinal axis is limited, chamber 5 is for accommodating injectable drug etc..Hold needle
Portion 6 is distally extending from the distal end of syringe 24, and it can be integrally formed to hold needle portion 6 with syringe 2, can also be to link together
Two components.Holding needle portion 6 has central needle passageway, and the part for receiving needle simultaneously keeps needle.Plunger 7 has from syringe
The distal part in syringe 2 and the portions of proximal outside syringe are inserted into proximal end 3.Needle 8, which has to be inserted into from the distal side for holding needle portion 6, to be held
Portions of proximal in the needle passageway in needle portion 6 and positioned at the distal part held outside needle portion 6, needle is hollow, and needle portion 6 is held in insertion
It is in fluid communication in needle passageway and with the chamber of syringe 25.Release mechanism 9 is installed at least partially about needle portion 6 is held, in release mechanism 9
Unactuated position, the distal part of needle 8 do not cover by release mechanism 9, in the actuated position of release mechanism 9, needle 8 it is at least remote
Side end is covered by release mechanism 9, to prevent the distal end with needle 8 from surprisingly contacting.Release mechanism 9 can be by thermoplastic
Or other any suitable materials are made.Optional needle housing 26 is for covering needle 8 and being shaped as the shape phase with release mechanism 9
Adaptation.
Release mechanism 10 described in detail below according to a kind of embodiment of the utility model.Fig. 2 is peace shown in FIG. 1
The side view of full syringe, wherein removing needle housing and release mechanism is in unactuated position.Fig. 3 is the A-A sectional views of Fig. 2.
Fig. 4 is the partial enlarged view of Fig. 3.Referring to Figure 2 to Figure 4, release mechanism 9 engages at least partially about needle portion axial direction is held.Another
In kind embodiment, release mechanism 9 can be rotated freely around needle portion is held, and face is trained in order to firmly believe needle point.Release mechanism 9 includes
Guiding locking component 10 and protection component 11.Guiding locking component 10 includes around the sleeve part 12 for holding the installation of needle portion 6 and from set
The guiding locking portion 13 that the outside of canister portion 12 extends to nearside along longitudinal direction.
12 inside of sleeve part of guiding locking component 10 can be equipped with protruding portion 24, and protruding portion 24, which can engage, holds needle portion 6
The sleeve part 12 of guiding locking component 10 is axially fastened on syringe by the recessed portion 25 formed on outside.Conversely, guiding lock
Recessed portion can be equipped with by determining 12 inside of sleeve part of component 10, and recessed portion can engage the protruding portion held and formed on 6 outside of needle portion,
The sleeve part 12 of guiding locking component 10 to be axially fastened on syringe.In Fig. 2 to embodiment shown in Fig. 4, needle is held
The outer diameter in portion 6 is less than the outer diameter of syringe 2, thus intersection formation holding shoulder of the needle portion 6 with syringe 2 is being held, on holding needle portion 6
It is equipped with flange at a fore-and-aft distance with the boundary position, is formed between the holding shoulder and the flange and is drawn for receiving
The recessed portion 25 for leading the protruding portion 24 of 12 inside of sleeve part of locking component 10, by 12 axis of sleeve part of guiding locking component 10
To being fastened on syringe.
Protection component 11 may include the distal loop in the sleeve part 12 of guiding locking component 10 around the set for holding the setting of needle portion 6
Canister portion 14, from protection component 11 sleeve part 14 outside along longitudinal direction to nearside extend arm 15 and in the proximal end of arm 15
The finger contact portion 16 (referring to Fig.1 0) at place.The finger contact portion 16 of protection component 11 is preferably shaped as from protection component 11
The proximal end of arm 15 plate-like portion that laterally outward side extends.It is highly preferred that plate-like portion surface is equipped with kick, to increase medical care
Personnel protect sense of touch when component 11 with finger push.By applying finger pressure to finger contact portion 16, protection component 11 can be from
Unactuated position (as shown in Figure 3) moves to actuated position (as shown in Figure 7).At unactuated position, the distal part of needle 8 is not
It is covered by protection component 11, in actuated position, at least distal end of needle 8 is covered by protection component 11.
Guiding locking component 10 and protection component 11 can have not to be caused for component 11 will to be protected to be releasably held in
The mechanism of dynamic position protects component 11 to move to the mechanism of actuated position from unactuated position and be used to protect for guiding
Component 11 is locked in the mechanism of actuated position.
May include guiding locking component 10 for protection component 11 to be releasably held in the mechanism of unactuated position
Guiding locking portion 13 on shrapnel 17 (with reference to Fig. 9) and protect component 11 arm 15 on set along longitudinal direction towards 17 side of shrapnel
The convex block 19 (referring to Fig.1 0) set.Preferably, shrapnel 17 is the tab angularly distad stretched out from guiding locking portion 13,
The tab is equipped with claw, which can be stuck in the distal end 20 of the convex block 19 on arm 15, component will be protected to be maintained at and do not caused
Dynamic position.It, can be along longitudinally disposed multiple convex blocks 19 of the arm 15 of protection component 11 according to another embodiment.Convex block 19
Being shaped as allows when applying finger power distad to the finger contact portion of protection component, the shrapnel 17 in guiding locking portion 13
More upper protruding block 19 will protect component to be discharged from unactuated position.
Include guiding locking component 10 for guiding protection component 11 to move to the mechanism of actuated position from unactuated position
Guiding locking portion 13 at least one longitudinal guide 21 and protection component 11 arm 15 on it is at least one corresponding vertical
To flange 22.Preferably, in one longitudinal guide 21 of each side setting of guiding protection portion 13, and correspondingly in protection component
A longitudinal flange 22 is respectively arranged in position corresponding with longitudinal guide 21 on 11 arm 15.At unactuated position, longitudinal flange
22 distal part is located in longitudinal guide 21, and longitudinal guide 21 and longitudinal flange 22 are shaped as permission to protection component 11
Finger contact portion 16 when applying finger power distad, longitudinal flange 22 is distad slided along longitudinal guide 21, until finger
Contact site 16 touches guiding locking portion 13 and backstop.
Mechanism for protection component 11 to be locked in actuated position includes the guiding locking portion 13 of guiding locking component 10
On shrapnel 17 on the arm 15 of protection component towards 17 side of shrapnel longitudinally disposed convex block 19 and protection component
At least one guide protrusion part 18 of proximal end setting and at least one recessed portion being arranged in the guiding locking portion of locking component
29.Preferably, it is respectively provided with a guide protrusion part 18 at left and right sides of the proximal end of protection component, and correspondingly in locking component
Guiding locking portion proximal end at left and right sides of be respectively provided with a recessed portion 29.And, it is preferable that the sleeve part 14 of protection component 11
Be formed as the hat shape with top drilling 27, the aperture of top drilling 27 is less than the internal diameter of the sleeve part main body 28 of protection component.
When protecting component to move to actuated position from unactuated position, shrapnel 17 can cross convex block 19 and be stuck in the nearside of convex block 19
23 (as shown in Figure 7), and guide protrusion part 18 receives in recessed portion 29 (as shown in Figure 8), and this to be in actuated position
Protection component 11 longitudinal axis and syringe longitudinal axis it is angled, and then syringe needle is caused not to be directed at protection component 11
Hat shape sleeve part 14 top drilling 27, but stick in sleeve part main body inner wall, further increase and syringe needle is avoided to pierce
The safety of wound.
Another embodiment according to the present utility model, guiding locking component 10 and protection component 11 are used to protect
Component is releasably held in the mechanism of unactuated position, for guiding protection component to move to actuated position from unactuated position
Mechanism and for component will to be protected to be locked in the mechanism of actuated position may include：The guiding locking portion of guiding locking component
Shrapnel towards convex block side on the arm of upper longitudinally disposed convex block and protection component；The guiding locking of guiding locking component
At least one longitudinal flange in portion and at least one corresponding longitudinal fluting on the arm of protection component；With guiding locking structure
Shrapnel on the arm of longitudinally disposed convex block and protection component towards convex block side and protection in the guiding locking portion of part
It is arranged in correspondence at least one recessed portion of proximal end setting of component and the guiding locking portion of locking component at least one
Lug boss, as long as can realize makes protection component move to actuated position from unactuated position.
Figure 11 is the stereogram according to a kind of needle housing 26 of embodiment of the utility model.As shown, needle housing 26 is interior
Surface is respectively provided with a pair of of rib 31 in the both sides of notch section, each pair of rib 31 respectively in the guiding locking portion 13 of guiding locking component
Flange 30 engages.In addition, the inner surface of needle housing 26 is additionally provided with a pair of of rib 32, it is preferable that this is circumferentially located at two pairs of ribs to rib 32
31 approximately mid way between, and engaged with the wedge shaped projection 33 on the sleeve part of guiding locking component 12.In protection component 11
When in unactuated position, needle housing 26 covers needle 8 from the distal side of needle 8 to nearside movement, in moving process, the interior table of needle housing 26
Rib 31 on face is slidably engaged with the flange 30 in the guiding locking portion 13 of guiding locking component, and on the inner surface of needle housing 26
Rib 32 on the sleeve part 12 of guiding locking component wedge shaped projection 33 extruding engage, be fixedly secured needle housing 26 (with reference to figure
12).In addition, the outer surface of needle housing 26 is equipped with the tread plate 34 of protrusion, in order to remove needle housing 26 when in use.
The concrete structure of the utility model, still, this field are described above with reference to specific implementation mode shown in the drawings
It is to be understood by the skilled artisans that specific descriptions above are Examples Propertiess, those skilled in the art as described above, can
All variations and modifications are made, without departing from the scope of the utility model.
Claims (28)
1. a kind of safety injector (1), including：
Syringe (2), with proximal end (3), distal end (4) and between proximal end and distal end and limit longitudinal axis chamber (5), hold
Needle portion (6) is distally extending from the distal end；
Plunger (7) has from the proximal end of syringe and is inserted into the distal part in syringe and the portions of proximal outside syringe；
Needle (8) has to be inserted into from the distal side for holding needle portion and holds portions of proximal in the needle passageway in needle portion and positioned at holding outside needle portion
Distal part, the needle be it is hollow and with the chamber in fluid communication of the syringe；And
Release mechanism (9) is installed at least partially about the needle portion of holding, described in the unactuated position of the release mechanism
The distal part of needle is not covered by the release mechanism, at the actuated position of the release mechanism, at least distal side end of the needle
End is covered by the release mechanism, to prevent the distal end with the needle from surprisingly contacting.
2. safety injector (1) according to claim 1, which is characterized in that the release mechanism (9) at least partially about
The needle portion of holding axially engages.
3. safety injector (1) according to claim 1, which is characterized in that the release mechanism (9) can surround described
Needle portion is held to rotate freely.
4. safety injector (1) according to any one of claim 1 to 3, which is characterized in that the release mechanism (9)
Including guiding locking component (10) and protection component (11), the guiding locking component holds needle portion peace at least partially about described
Dress, the protection component hold the setting of needle portion and positioned at the distal side of the guiding locking component, the guarantor at least partially about described
Shield component can move to actuated position from unactuated position, and at unactuated position, the distal part of the needle is not described
Component covering is protected, in actuated position, at least distal end of the needle is covered by the protection component, the guiding locking
Component and the protection component have for the protection component to be releasably held in the mechanism of unactuated position, for drawing
It leads the protection component and from unactuated position moves to the mechanism of actuated position and for the protection component to be locked in actuating
The mechanism of position.
5. safety injector (1) according to claim 4, which is characterized in that the guiding locking component includes around institute
State the guiding locking portion (13) held the sleeve part (12) of needle portion installation and extended along longitudinal direction to nearside from the outside of the sleeve part.
6. safety injector (1) according to claim 5, which is characterized in that the protection component is included in the guiding
Sleeve part of the distal loop of the sleeve part of locking component around the sleeve part (14) for holding the setting of needle portion, from the protection component
Outside is along longitudinal direction to the arm (15) of nearside extension and in the finger contact portion (16) of the proximal end of the arm.
7. safety injector (1) according to claim 6, which is characterized in that be used for the protection component releasedly
The mechanism for being maintained at unactuated position includes shrapnel (17) and the protection in the guiding locking portion of the guiding locking component
Towards the convex block (19) that the shrapnel (17) side is longitudinally disposed, at unactuated position, the guiding on the arm of component
At least part of shrapnel on sticking department receives in the distal side of the convex block, and the protection component is maintained at and does not activate position
It sets, the convex block (19), which is shaped as, to be allowed when applying finger power distad to the finger contact portion of the protection component, institute
The more upper convex block of shrapnel in guiding locking portion is stated, the protection component is discharged from unactuated position.
8. safety injector (1) according to claim 7, which is characterized in that for guiding the protection component never to cause
The mechanism that dynamic position moves to actuated position includes that at least one longitudinal direction in the guiding locking portion of the guiding locking component is led
At least one corresponding longitudinal flange (22) on the arm of slot (21) and the protection component is described at unactuated position
The distal part of longitudinal flange is located in the longitudinal guide, and the longitudinal guide and longitudinal flange are shaped as permission to institute
When stating the finger power of the finger contact portion application of protection component distad, the longitudinal flange is distad slided along the longitudinal guide
It is dynamic, until the finger contact portion touches the guiding locking portion and backstop.
9. safety injector (1) according to claim 8, which is characterized in that for the protection component to be locked in cause
The mechanism of dynamic position includes the arm of the shrapnel and the protection component in the guiding locking portion of the guiding locking component
On towards the longitudinally disposed convex block (19) in the shrapnel (17) side and it is described protection component proximal end setting
At least one guide protrusion part (18) and at least one recessed portion being arranged in correspondence in the guiding locking portion of the locking component
(29), when the protection component moves to actuated position from unactuated position, the shrapnel can cross the convex block and block
In the nearside of the convex block, and the guide protrusion part receives in the recessed portion so that the protection component with indulge
The mode that gradient is formed to axis is locked in actuated position.
10. safety injector (1) according to claim 4, which is characterized in that in the sleeve part of the guiding locking component
Side is equipped with protruding portion (24) or recessed portion, and the recessed portion formed on the outside of needle portion is held described in the protruding portion or recessed portion engagement
(25) or protruding portion, the sleeve part of the guiding locking component is axially fastened on the syringe.
11. safety injector (1) according to claim 4, which is characterized in that further include needle housing (26), the needle housing is used
It is adapted with the shape of the release mechanism in covering the needle and being shaped as.
12. safety injector (1) according to claim 11, which is characterized in that the inner surface of the needle housing (26) is equipped with
At least a pair of of rib (31), at least a pair of of rib (31) and at least one in the guiding locking portion (13) of the guiding locking component
A flange (30) is slidably engaged.
13. safety injector (1) according to claim 12, which is characterized in that the inner surface of the needle housing (26) is also set
There are a pair of of rib (32), the pair of rib (32) to be squeezed with the wedge shaped projection (33) on the sleeve part (12) of the guiding locking component
Engagement.
14. safety injector (1) according to claim 13, which is characterized in that the outer surface of the needle housing (26) is equipped with
The tread plate (34) of protrusion.
15. safety injector (1) according to claim 6, which is characterized in that the sleeve part of the protection component is formed as
Hat shape with top drilling (27), the aperture of the top drilling are less than the interior of the sleeve part main body (28) of the protection component
Diameter.
16. safety injector (1) according to claim 6, which is characterized in that the finger contact portion is shaped as from institute
State the proximal end plate-like portion that laterally outward side extends of the arm of protection component.
17. one kind being used for the release mechanism (9) of safety injector (1), the release mechanism is at least partially about safety injector
Syringe hold needle portion installation, in the unactuated position of the release mechanism, the distal part of needle is not covered by the release mechanism
Lid, is covered in at least distal end of the actuated position of the release mechanism, needle by the release mechanism, to prevent and the needle
Distal end surprisingly contact.
18. release mechanism (9) according to claim 17, which is characterized in that the release mechanism (9) at least partially about
The needle portion of holding axially engages.
19. release mechanism (9) according to claim 17, which is characterized in that the release mechanism (9) can surround described
Needle portion is held to rotate freely.
20. the release mechanism (9) according to any one of claim 17 to 19, which is characterized in that the release mechanism (9)
Including guiding locking component (10) and protection component (11), the guiding locking component holds needle portion peace at least partially about described
Dress, the protection component hold the setting of needle portion and positioned at the distal side of the guiding locking component, the guarantor at least partially about described
Shield component can move to actuated position from unactuated position, and at unactuated position, the distal part of the needle is not described
Component covering is protected, in actuated position, at least distal end of the needle is covered by the protection component, the guiding locking
Component and the protection component have for the protection component to be releasably held in the mechanism of unactuated position, for drawing
It leads the protection component and from unactuated position moves to the mechanism of actuated position and for the protection component to be locked in actuating
The mechanism of position.
21. release mechanism (9) according to claim 20, which is characterized in that the guiding locking component includes around institute
State the guiding locking portion (13) held the sleeve part (12) of needle portion installation and extended along longitudinal direction to nearside from the outside of the sleeve part.
22. release mechanism (9) according to claim 21, which is characterized in that the protection component is included in the guiding
Sleeve part of the distal loop of the sleeve part of locking component around the sleeve part (14) for holding the setting of needle portion, from the protection component
Outside is along longitudinal direction to the arm (15) of nearside extension and in the finger contact portion (16) of the proximal end of the arm.
23. release mechanism (9) according to claim 22, which is characterized in that be used for the protection component releasedly
The mechanism for being maintained at unactuated position includes shrapnel (17) and the protection in the guiding locking portion of the guiding locking component
Towards the convex block (19) that the shrapnel (17) side is longitudinally disposed, at unactuated position, the guiding on the arm of component
At least part of shrapnel on sticking department receives in the distal side of the convex block, and the protection component is maintained at and does not activate position
It sets, the convex block (19), which is shaped as, to be allowed when applying finger power distad to the finger contact portion of the protection component, institute
The more upper convex block of shrapnel in guiding locking portion is stated, the protection component is discharged from unactuated position.
24. release mechanism (9) according to claim 23, which is characterized in that for guiding the protection component never to cause
The mechanism that dynamic position moves to actuated position includes that at least one longitudinal direction in the guiding locking portion of the guiding locking component is led
At least one corresponding longitudinal flange (22) on the arm of slot (21) and the protection component is described at unactuated position
The distal part of longitudinal flange is located in the longitudinal guide, and the longitudinal guide and longitudinal flange are shaped as permission to institute
When stating the finger power of the finger contact portion application of protection component distad, the longitudinal flange is distad slided along the longitudinal guide
It is dynamic, until the finger contact portion touches the guiding locking portion and backstop.
25. release mechanism (9) according to claim 24, which is characterized in that for the protection component to be locked in cause
The mechanism of dynamic position includes the arm of the shrapnel and the protection component in the guiding locking portion of the guiding locking component
On towards the longitudinally disposed convex block (19) in the shrapnel (17) side and it is described protection component proximal end setting
At least one guide protrusion part (18) and at least one recessed portion being arranged in correspondence in the guiding locking portion of the locking component
(29), when the protection component moves to actuated position from unactuated position, the shrapnel can cross the convex block and block
In the nearside of the convex block, and the guide protrusion part receives in the recessed portion so that the protection component with indulge
The mode that gradient is formed to axis is locked in actuated position.
26. release mechanism (9) according to claim 20, which is characterized in that in the sleeve part of the guiding locking component
Side is equipped with protruding portion (24) or recessed portion, and the recessed portion formed on the outside of needle portion is held described in the protruding portion or recessed portion engagement
(25) or protruding portion, the sleeve part of the guiding locking component is axially fastened on the syringe.
27. release mechanism (9) according to claim 22, which is characterized in that the sleeve part of the protection component is formed as
Hat shape with top drilling (27), the aperture of the top drilling are less than the interior of the sleeve part main body (28) of the protection component
Diameter.
28. release mechanism (9) according to claim 22, which is characterized in that the finger contact portion is shaped as from institute
State the proximal end plate-like portion that laterally outward side extends of the arm of protection component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720297602.7U CN207886483U (en) | 2017-03-24 | 2017-03-24 | Safety injector and release mechanism for it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720297602.7U CN207886483U (en) | 2017-03-24 | 2017-03-24 | Safety injector and release mechanism for it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207886483U true CN207886483U (en) | 2018-09-21 |
Family
ID=63546440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720297602.7U Expired - Fee Related CN207886483U (en) | 2017-03-24 | 2017-03-24 | Safety injector and release mechanism for it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207886483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108619594A (en) * | 2017-03-24 | 2018-10-09 | 千禧光医疗有限公司 | Safety injector and release mechanism for it |
-
2017
- 2017-03-24 CN CN201720297602.7U patent/CN207886483U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108619594A (en) * | 2017-03-24 | 2018-10-09 | 千禧光医疗有限公司 | Safety injector and release mechanism for it |
| CN108619594B (en) * | 2017-03-24 | 2021-08-13 | 千禧光医疗有限公司 | Safety syringe and safety mechanism therefor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180921 Termination date: 20210324 |
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| CF01 | Termination of patent right due to non-payment of annual fee |