CN1193804C

CN1193804C - Needle point guard safety cap assembly

Info

Publication number: CN1193804C
Application number: CNB988142503A
Authority: CN
Inventors: L·R·科赫; E·E·埃尔森
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-23
Filing date: 1998-09-23
Publication date: 2005-03-23
Anticipated expiration: 2018-09-23
Also published as: CN1355716A; AU9777598A; WO2000016832A1

Abstract

In the implementation example of a protection safety helmet set (100) of a needle tip, disclosed by the present invention, a top cover (11) of a needle tip is connected with an extensible framework (130); then, the extensible framework (130) is connected with an engaged member (150) of a needle head hub. Before the present invention is used, a needle bar completely passes through a top cover (110) of the needle tip; after using, a user pushes against the extensible framework (130) to make the top cover (110) slide downwards along the needle bar until the needle tip is limited in the top cover (110). An assembly (100) of the protection safety helmet set of the needle tip can be formed in integration by elastic plastic.

Description

Needle point guard safety cap assembly

FIELD OF THE INVENTION

The present invention relates to the syringe needle of hypodermic syringe, the syringe needle that The present invention be more particularly directed to hypodermic syringe covers the needle point of syringe needle to prevent the unexpected people's of bundle device when using post processing.

The background of invention

Now, the disposable hypodermic syringe syringe needle has become inalienable part in the health care.Common hypodermic needle comprises a removable plastics needle guard, and this needle guard removes before use, and replaces before processing again.This behavior that the pin medicated cap is put back to makes has the possibility of being stabbed by the syringe needle accident with person, common corpsman,hospital or medical personnel.Stabbed by the pin accident and may make disease pass the first line of defence of human body---skin.Since some diseases such as HIV be at present can not cure and the most at last the people cause death, therefore used needle point is come out and needle guard of every replacing all can constitute potential threat to life.Although this problem had appearred in existing equipment, also there is not a kind of cost-effective equipment up to now.

Summary of the invention

The invention provides a kind of needle point guard safety cap assembly, it is used for the needle point of syringe is covered safely and protects after syringe uses.This assembly preferably includes: a top cover, and its hollow part by an elongation constitutes, and an end of these parts is used for syringe needle is received in wherein for the opening shape, and the other end almost by end wall sealing, has a hole on the end wall, and syringe needle can pass from this hole; Usually also have the opening sealing of a lid with top cover, a hole that can allow syringe needle therefrom pass is arranged on the lid, like this, syringe needle just can pass the hole of lid and the hole on the tegmental wall.This assembly also comprises: can roll over for one and stretch framework, this framework has a near-end and a far-end; A cup, it is connected needle point guard safety cap assembly with the needle hub of syringe.Wherein can roll over the near-end of stretching framework its far-end that links to each other with cup then links to each other with the needle point top cover.Syringe needle can pass hole on the above-mentioned lid and the hole on the needle point top cover, up to the inboard of needle point by the top cover end wall that sealed, enters a protection position, and needle point can not pass the hole on the top cover on this position.

When using injector to inject, needle point must stretch out from the hole of end wall.Thereby a manual extending framework can be connected on the top cover when preparing to handle syringe, move top cover along syringe needle.

Can handle syringe after the injection, at this moment top cover be slided into the position that its end wall exceeds the needle point summit.Top cover is supported by the hole on the lid and enters a protection position around the rotation of lid hole up to the inboard that needle point passes the top cover end wall of sealing then, and needle point can not pass the hole on the top cover on this position.

Used a plurality of parts to come to provide the feedback information pointer pinnacle lid of sense of touch and audition successfully to launch in the needle point cap assembly to the user.At extending framework during from non-effect position beginning centering, the door bolt arm spare that is used for limiting framework before use " snaps in " slit on the framework; When framework launches fully, the projection on the framework will be stuck on the shank periphery.This sense of touch and feedback information acoustically for the user provide syringe needle safe, no longer need pin is carried out the assurance of visual inspection.

Door bolt arm and slit except providing the tactile feedback information to the user, can also guarantee when beginning to launch needle housings that user's finger has enough strength to finish installation.When lever arm was pulled out slit, in order to overcome the resistance of lever arm, the user must provide enough strength to extending framework, like this, when lever arm leaves slit, launched to finish in one direction, and the user does not need extra attention.

If needle guard does not suitably limit in some way, so because the user adds the problem of force direction to needle guard, just might make needle guard be pushed away hypodermic syringe fully, therefore in the preferred embodiment, needle guard has adopted annular ring corresponding on a narrow annular slot and the hypodermic syringe to mesh.Under some occasion, guarantee that it also is an a matter of great account that hypodermic syringe top ferrule openings is positioned at suitable direction, so preferred embodiment also can add rib corresponding on an elongated slot and the hypodermic syringe and meshes.At this moment, needle guard just can provide the additional indication of a sleeve pipe direction.

Preferred embodiment is to adopt the integrally formed form of elastoplast, thereby makes processing more economical.

Brief Description Of Drawings

Fig. 1 is the perspective view of needle point guard safety cap assembly preferred embodiment one side of the present invention;

Fig. 2 is the turn over perspective view of a side of embodiment among Fig. 1;

Fig. 3 is along the cross-sectional view at 3-3 place among Fig. 1;

Fig. 4 is a needle point guard safety cap assembly when preparing to be connected with syringe, the cross-sectional view at 3-3 place among Fig. 1;

Fig. 5 is the cross-sectional view of preferred embodiment among Fig. 1, and it has showed that needle point guard safety cap assembly is contained in the appearance on the syringe;

Fig. 6 is the cross-sectional view of preferred embodiment among Fig. 1, and it has showed that needle point guard safety cap assembly is contained on the syringe, the appearance that the while needle guard covers pin;

Fig. 7 is the cross-sectional view of preferred embodiment among Fig. 1, and it has showed that needle point guard safety cap assembly is contained on the syringe, removes needle guard, and syringe is prepared the appearance of injection;

Fig. 8 is the cross-sectional view of preferred embodiment among Fig. 1, and it has showed that needle point guard safety cap assembly is contained in the appearance on the syringe, has shown also how the user drives cap assembly to cover the appearance of needle point;

Fig. 9 is the cross-sectional view of preferred embodiment among Fig. 1, and it has showed that needle point guard safety cap assembly is contained in the appearance on the syringe, has also described the appearance of using back needle point medicated cap rotation to cover needle point and being fixed on the protection position;

Figure 10 be among Fig. 9 along the cross-sectional view at 10-10 place, it has showed when protecting the clamping element that needle point guard safety cap is fixed on the syringe needle.

Figure 11 is the perspective view of another embodiment one side of needle point guard safety cap assembly;

Figure 12 is the turn over perspective view of a side of embodiment among Figure 11;

Figure 13 is along the cross-sectional view at 13-13 place among Figure 11;

Figure 14 is the needle point guard safety cap assembly of another embodiment when preparing to be connected with syringe, among Figure 11 along the cross-sectional view at 13-13 place;

Figure 15 is the cross-sectional view of another embodiment shown in Figure 11, and it has showed that needle point is connected the appearance on the syringe;

Figure 16 is the cross-sectional view of another embodiment of Figure 11, and it has showed that needle point guard safety cap assembly is contained on the syringe and the appearance of needle guard when pin is covered.

Describe in detail

After adopting needle point guard safety cap assembly of the present invention, just can eliminate pin at all and use rear meaning Outer bundle people's thing. In order to prevent the unexpected people of bundle, the present invention adopts lid, cap or a cup shell Cover needle point or needle point is received in one after use and protect in the position.

A hole is arranged on the top cover of needle point, like this top cover can be before injection along syringe needle slide into away from The punctured bit of needle point slides back to along syringe needle after injection again and covers needle point. As long as needle point one injection Complete and get back in the top cover, just with the top cover rotation or reverse, needle point just can not be from top cover like this Come up again in the hole. The termination of top cover forms a cavity volume, and the end with fixed needle prevents pin Come up again in the hole of passing in the end wall.

The needle point top cover is usually designed to the structure that can join with general needle guard, like this, and needle point guard Safety cap assembly is installed and syringe needle installs before selling at needle guard. So when selling syringe needle, pin The pinnacle lid has been reduced to away from the position needle guard of needle point then with common form needle guard to be lived.

In the process of preparing injection, needle guard is removed, then just can be with syringe with common Mode is injected. The needle point top cover slips over, rotates to prevent needle point again along whole syringe needle after the injection Come up.

The for convenience rotation of needle point top cover, for being arranged, a device make top cover more square along pin Just slide, also for convenience with needle hub or syringe be connected the needle point guard safety cap group Part also can have a collapsible elongated portion or claim that can roll over the framework of stretching is connected on the needle point top cover. This collapsible elongated portion or claim to roll over and stretch framework and can transfer to link to each other with a connector, and connect Part is applicable to non-disconnectable form and links to each other with needle hub. Needle hub transfers to be contained in advance syringe again On, perhaps injecting or before patient's extracting bodily fluid, syringe and needle hub are being joined.

In order to help that the needle point top cover is remained on the needle hub, added one in the preferred embodiment Annular ring on the individual annular groove, itself and needle hub is intermeshing.

Before injection, remove in the process of needle guard, framework usually with connector with the syringe needle top cover Remain on the punctured bit away from needle point. In the preferred embodiment, jut on the connector with A groove on the framework joins, and when the operation needle housings, the augmenting portion of jut sticks into groove In. After the injection, manual or hand push framework makes the needle point top cover unclamp, slide to needle point and finally covers Needle point.

After receiving needle point in the top cover, have a rotation corresponding to the promotion on the framework.When needle point is arranged in top cover,, can make the top cover rotation if continue to promote framework.Postrotational top cover is by preventing that needle point from coming up from Gai Kongzhong again in the cavity volume that needle point is remained on the top cover end wall.

In order further top cover to be remained on the rotation position, can or be fixed on the shank the framework locking usually.Framework is fixed up prevents that also framework from folding up and top cover is slided back along shank.So just can guarantee further that needle point can not emerge again.

The installation of this preferred embodiment

Needle point guard safety cap assembly 100 of the present invention can process to increase reliability and to reduce processing and installation cost by a single working of plastics mold.Although also nonessential, the preferred embodiments of the present invention adopt monomeric molded plastic part exactly.

Design of the present invention is just to install fully before using syringe needle, normally just is contained on the syringe needle or on the syringe at before sales.What the arrow among Fig. 1-5 showed is the installation steps of the preferred embodiment.

In order to install the needle point guard safety cap assembly in the preferred embodiment, the connector and the needle point top cover of syringe must be rotated to the position that receives syringe needle.Syringe connector and framework flexibly connect., syringe connector or cup 150 are spent with respect to framework 130 rotations about 90, syringe needle just can be along passing syringe connector 150 with the direction of framework 130 almost parallels of stretching out so for this reason.

Next step will clog or seal top cover 110 after a lid that flexibly connect with needle point top cover 110 (or claiming closure member) 118 rotations.In order to help that lid is remained on the top cover, with 184 engagements of the cannelure on annular ring on the lid 182 and the top cover; Thereby the cross section of circle and groove shrinks gradually engagement is more prone to, but this makes that also circle and groove are difficult to separately.

The closed roof 110 that flexibly connects with framework 130 of rotation then, thus make syringe needle pass hole on the top cover and the hole on the cup (being the syringe connector) 150.

When top cover is in the position that hospitalizes pin, the folding or bending of the flexible portion of framework or stretch section 130 beginnings between two sections, top cover 110 is along the shank needle point that slips away then.In order to help aforesaid operations, also for fixing cup better before inserting syringe needle, can more convenient manipulation top cover 110 on the top cover 110 thereby a needle guard 300 is placed.

When top cover 110 slided on shank, framework maybe can be rolled over and stretch part 130 continuation bendings.When top cover abutted against or contacts with needle hub or syringe, framework 130 was releasably fixed top cover with cup (being the syringe connector) 150.In the preferred embodiment, the projection 192 of a head increase is passed the slit 194 on the framework on the syringe connector.The size that the projection head portion increases requires to apply suitable power in design on framework just can make head snap in slit.

Needle guard 300 also is mounted up and is used for selling when top cover 110 is slided shank.For the guard shield with pin is fixed on the needle hub, the inner face at connector in the preferred embodiment has adopted cannelure 186, and it engages with corresponding annular circle 206 on the needle tubing.The cross section of ring and groove is tapered, thereby makes engagement more easy, but this makes that also ring and groove are difficult to separately.Though the user can manually unclamp framework, when before the injection needle guard 300 being removed, the moving top cover 110 that fixes.

The preferred embodiment of Fig. 1-10

Fig. 1-10 has showed an embodiment of needle point guard safety cap assembly 100 of the present invention.It preferably adopts monomer plastics materials and parts to form the needle point guard safety cap group.Fig. 1 and 2 is described to be that this preferred needle point guard safety cap group is taken off latter two different lateral appearance from mould.Fig. 3-10 showed when this preferred embodiment is prepared to use and with the appearance of syringe when reality is used.

Get back to Fig. 1 and 2, needle point guard assembly 100 comprises needle point top cover (or claim needle point medicated cap or cup shell or be used for covering the needle point covering device of needle point) 110.Top cover 110 be shaped as elongate member 112 with circumferential wall.The one end opening other end of elongate member 112 is then almost sealed up by diapire (or claiming end wall) 116.

In present this preferred embodiment of Fig. 1 and 2, the hole on the diapire 116 of top cover 110 (or claiming eye) 114 can make syringe needle therefrom pass.Hole 114 is positioned at the eccentric position of diapire, and cavity volume 126 has then occupied remaining most of wall.Lever arm (or claiming rotary apparatus) 120 links to each other with top cover, when promoting, prevents that needle point from passing hole 114 thereby top cover 110 relative needle points are rotated.

Fig. 1 and 2 has also showed lid (or claim closure member or roof or) 118, thereby they can be around the rotation of the coupling part between top cover and the lid with top cover 110 sealings.A hole (or claiming eye) 122 is arranged on the lid (or claiming locking device) 118, pin is therefrom passed.In the present embodiment, lid (or title shank geared assembly) 118 is as the fulcrum and the syringe needle engagement of lever.When syringe needle passed the hole 122 on the lid but do not pass hole 114 on the diapire, lid 118 was nibbled the rotation of merging into top cover with syringe needle a fulcrum is provided.

In the embodiment shown in Fig. 1 and 2, needle point guard safety cap assembly 100 should be suitable for linking to each other with needle hub or syringe.Top cover 110 is stretched framework (or claim foldable part spare maybe can roll over the section of stretching) 130 and is linked to each other with can rolling over, and can roll over to stretch framework and link to each other with cup 150.Cup 150 is used for the needle point guard security component is linked to each other with needle hub or syringe.In this preferred embodiment, top cover 110 and can rolling over is stretched and is adopted direct-connected form between the framework 130.

Cup 150 has circumferential wall 152 and diapire 154.Diapire 154 has the hole 156 that pin therefrom passes.In this special case, be provided with lath 158, it is used for limiting the passage of the inboard of circumferential wall 152 near diapire 154 places, thereby cup 150 more easily is connected on the needle hub.Also comprise a pair of linking arm 160 in the present embodiment, extend out near diapire 154 from cup 150.Linking arm 160 is used for cup 150 is connected to roll over stretching on the framework 130.Linking arm 160 with can roll over that to stretch framework 130 be to flexibly connect.

Cup 150 in the preferred embodiment has annular ring relative on a cannelure 186 and the needle hub 206 and engages.The cross section of circle and groove is tapered, thereby makes its joint more easy, but separately is difficult to.The preferred embodiment further comprises an elongated slot 188, thus its with needle tubing on corresponding long projection 208 engage the sheath that makes pin and can rotate to definitely and pin hole 220 positions aligning.

In present this preferred embodiment, can roll over and stretch framework 130 many use are arranged.It can be used to cup (being the syringe connector) 150 is linked to each other with needle point top cover 110, and can be used to releasably top cover 110 is fixed on the far-end of needle point.It also can be used to needle point top cover 110 is slided shank, and helps top cover 110 to rotate round needle point.In addition, it also helps to keep the rotation position of needle point top cover 110.

As illustrated in fig. 1 and 2, the section of stretching 130 can be rolled over, a furcula (wishbone) shape section 132 and a lower section 140 can be comprised.Wishbone section 132 has two arms 134 and a seat 136.The arm 134 of wishbone section flexibly connects with the linking arm 160 of cup.Lower section 140 has a upper end 142 and a lower end 144.The seat 136 of wishbone section and 142 flexible linking to each other of the upper end of lower section 140.The lower end 144 of lower section and 110 flexible linking to each other of top cover.There are two clamping elements 148 to be installed on the lower section 140.Wishbone section 132 forms openings or claims a device, and when rolling over when stretching framework 130 bendings, clamping element 148 can therefrom pass.Here also have a device, when rolling over when stretching framework 130 and turning up, the projection 192 on the connector is engaged with slit 194, this point will more fully be described below.Shown in Figure 6 more clear to this.

Fig. 2 has also showed pressure platform 146, and it finally contacts with lever arm 120 and makes top cover 110 produce rotation.Fig. 8 and Fig. 9 have showed the sight that top cover 110 cast-overs point rotates from the angle of the best, and this point will be done comprehensive discussion in the back.

Fig. 2 has also showed a pair of outstanding clamping element 148, and it stretches out from lower section 140, as protection position locking device.Syringe needle is after using, and clamping element 148 can be rolled over as one and stretch framework 130 and be fixed on device on the shank.Can roll over and stretch framework 130 and be fixed on and can guarantee on the shank that top cover 110 remains on rotation position or torsiversion, and also can make top cover 110 remain on the protection position, top cover 110 can not slip back on the shank like this, and needle point is come out.

Figure 9 shows that clamping element 148 is with the shank engagement and can roll over and stretch framework 130 and be fixed on sight on the shank.Figure 10 is the cross-sectional view that shank passes clamping element, and it illustrates the situation of clamping element and shank engagement.

Fig. 3 has showed thereby how cup 150 rotates for syringe needle to be passed cup 150 and prepares for cup 150 links to each other with syringe.Lath 158 is as a device, when syringe links to each other with pin in the cup or separates, can be used to syringe needle is carried out orientation and prevent that pin from rotating in cup.Cup (or claim syringe connector) 150 also has the projection 192 that a head has increased.Projection detachably with lower section 140 in slit 194 engagement, thereby when rolling over when stretching framework 130 and bending, provide a locking device as Fig. 6 and Fig. 7.

Fig. 3 has showed also how lid 118 rotates and make the sight in top cover 110 sealings formation chamber 128 shown in Figure 4.In this preferred embodiment, 122 limits 124 that have a part to tilt, the hole on the lid 118 (or claiming eye).The limit 124 that part tilts can make top cover 110 cast-over point rotation more easily as shown in Figure 9.

In preferred embodiment shown in Figure 3, top cover 110 has a cavity volume 126 that nestles up hole (or claiming eye) 114.It helps to prevent that by needle point is held onto needle point from 114 unexpectedly emerging once more from the hole after the point rotation of top cover 110 cast-overs.

Fig. 4 described cup 150 postrotational situations, thereby and showed that direction that syringe needle inserts prepares for needle point guard safety cap assembly 100 links to each other with syringe.Fig. 4 has also described the chamber 128 in the top cover 110 that has sealed.Not only needle point is covered at this preferred embodiment lumen 128, also can collect from the effusive fluid of needle point.

Thereby the arrow on top cover 110 next doors of having sealed among Fig. 4 indicates the direction of rotation of the top cover 110 that has sealed and prepares with being connected of syringe for needle point guard safety cap 100.The rotation of cup 150 and the top cover 110 that sealed makes the syringe needle can to pass both, thereby gets ready with being connected of syringe for needle point guard safety cap assembly 100.

Thereby Fig. 5 has described needle point guard safety cap assembly 100 to join for receiving the situation that needle guard 300 is prepared with syringe.Although in this preferred embodiment, it is to be connected on the needle hub 204, and it also can be connected on the syringe 202.

As shown in Figure 5, when load onto needle point guard safety cap assembly and for the use of needle guard 300 ready after, can roll over and stretch framework 130 and begin bending.Fig. 5 also showed and can roll over when stretching framework 130 bending, and one of them clamping element 148 is the sight from stretching out between the arm 134 of wishbone section 132 how.

Fig. 6 showed can roll over stretch the folding or bending of framework 130 after, the situation of one of them clamping element 148 from stretching out between the arm 134 of wishbone section 132.Can be clear that from Fig. 6, when can roll over stretch framework 130 bending after, two clamping elements 148 all can stretch out between the arm 134 of wishbone section 132.

Fig. 5 has also described the projection 192 of cup 150 and can roll over the situation of slit 194 before needle guard 300 uses of stretching framework.The arm of wishbone section 132 can make projection 192 and slit 194 engagements.

Can be clear that from Fig. 6, prevent that pin from being polluted before use thereby top cover 110 is suitable for receiving needle guard 300.In this preferred embodiment, diapire 154 adjacency of lid 118 and cup 150 are to prevent that pin from being polluted.Having needle point guard safety cap assembly 100 and having installed the syringe of needle guard 300 described in Fig. 6 is the appearance that the user takes before use.The user only need remove needle guard then and use syringe to get final product according to the described general occupation mode of Fig. 7 when using syringe.Projection 192 on the connector and can roll over the slit 194 of stretching framework and can prevent in the process that needle guard 300 is removed that needle point medicated cap 110 from sliding from shank.

After the use, stretch framework 130 head that projection 192 has increased is released from slit 194 thereby user's only with hand refers to push away rolling over of having bent.When the head that has increased on the projection passes slit, can provide a tactile feedback information to the user, the guard shield that is syringe needle is enabled, and also tells the user will apply a sufficient force simultaneously and makes head pass slit, can guarantee that like this user's finger has enough impulse forces to start needle housings fully.

Then, the user continues to push away to roll over and stretches framework 130, makes top cover 110 slip over the length of syringe needle as shown in Figure 8.In this preferred embodiment, when top cover 110 during near needle point, pressure platform 146 near and finally contact with lever arm 120.After the contact, stretch framework 130 power is added on the lever arm 120 thereby continue to push away to roll over.Greatly in the time of contact, needle point 114 comes out to enter the chamber 128 from the hole.After needle point comes out from hole 114, corresponding to the thrust of lever arm 120, top cover 110 122 rotations and therefore rotating around the hole around needle point.Fig. 9 has showed postrotational top cover 110.

Corresponding to user's thrust, when rolling over when stretching framework 130 near shank, clamping element 148 is put on the spot with the syringe needle engagement and with syringe needle, can roll over like this to stretch framework and just be clipped in position shown in Figure 9.This just provides a kind of device, thereby it keeps by engaging of keep-up pressure platform 146 and lever arm 120 or top cover 110 is fixed in it with respect to the postrotational position of needle point, and and then prevents that needle point from 114 coming up from the hole again.It also can be used to provide a kind of device, and this device can prevent to roll over to be stretched framework 130 bending and prevent that top cover 110 is sliding and needle point is exposed to last time along shank.Therefore, clamping element 148 can be used as the device that needle point top cover 110 is fixed on the protective position of syringe needle.Clamping element also can provide extra tactile feedback information to the user when meshing with shank.

In addition, in the described preferred embodiment of Fig. 9, cavity volume 126 is used for limiting needle point and prevents that needle point from 114 coming up from the hole again.Thereby this cavity volume also helps to collect the fluid that flows out from needle point can not run out of fluid from top cover.Also have, also spill the excess fluid of coming simultaneously for convenience and be collected into, when preparing to handle, needle guard 300 is placed on the top cover 110 in order to ensure the hole 114 from the diapire 116 of top cover 110.

The explanation of another embodiment shown in Figure 11-16

Needle point guard safety cap assembly 400 among this embodiment is also processed to increase reliability and to reduce and produce and installation cost by a unitary plastic spare mold.

For the needle point guard safety cap assembly of this embodiment is installed, syringe connector and needle point top cover must rotate to the position of preparing to accommodate syringe needle.Between syringe connector and the framework for flexibly connecting.For this reason, be that cup 450 is spent with respect to framework 430 rotations about 90 with the syringe connector, syringe needle just can be along passing syringe connector 450 with the direction of framework 430 almost parallels of stretching out like this.

Next step will clog or seal top cover 410 after a lid that flexibly connect with needle point top cover 410 (or claiming closure member) 418 rotations.The rotation top cover that flexibly connects and sealed up with framework 430 then, thus make syringe needle can pass hole on the top cover and the hole on the cup 450.When top cover was in the position of accommodating syringe needle, the flexible portion of framework (or claim can roll over the section of stretching) 430 beginnings between two sections was folding or bend, then with top cover 410 along the shank needle point that slips away.In order to help aforesaid operations,, be more convenient for handling top cover 410 on the top cover 410 thereby a needle guard 480 placed also for fixing cup shell better before inserting syringe needle.

When top cover 410 slided on shank, framework (or claiming to roll over to stretch part) 430 continued bending.When top cover abuts against or contacts with needle hub or syringe, slide along shank by make top cover 410 with needle guard 480, framework 430 will releasably be fixed top cover with syringe connector 450.Also needle guard need be installed when preparing to sell.Though the user can start top cover framework is unclamped, when before the injection needle guard 480 being removed, the moving top cover 410 that fixes.

After Figure 11 and 12 is depicted as this embodiment and takes off from mould two ipsilaterals not.Figure 13-16 appearance of having described when the preparation of this preferred embodiment is used with syringe.

Get back to Figure 11 and 12, needle point guard assembly 400 comprises needle point top cover (or claim needle point medicated cap or cup shell or be used for covering the needle point covering device of needle point) 410.Top cover 410 be shaped as elongate member 412 with circumferential wall.The one end opening other end of elongate member 412 is then almost sealed up by diapire (or claiming end wall) 416.

In the embodiment of Figure 11 and 12, pin can pass by (or title eye) 414 from the hole on the diapire 416 of top cover 410.Lever arm (or claiming rotary apparatus) 420 links to each other with top cover, when promoting lever arm, thereby top cover 410 relative needle points is rotated prevent needle point from 414 passing from the hole.

Figure 11 and 12 has also showed lid (or claiming closure member or roof) 118, thereby they can be around the rotation of the coupling part between top cover and the lid with 410 sealings of top cover medicated cap.A hole (or claiming eye) 422 is arranged on the lid 418, syringe needle is therefrom passed.In this embodiment, lid (or title shank geared assembly) 418 is as the fulcrum and the syringe needle engagement of lever.When syringe needle passed the hole 422 on the lid but do not pass hole 414 on the diapire, lid 418 was nibbled the rotation of merging into top cover with syringe needle a fulcrum is provided.

Top cover 410 is stretched framework (or claim foldable part spare maybe can roll over the section of stretching) 430 and is linked to each other with can rolling over, and can roll over and stretch framework is that cup 450 links to each other with the syringe connector again.Cup 450 can be used to the needle point guard security component is linked to each other with needle hub or syringe.In this embodiment, top cover 410 and can rolling over is stretched and is adopted direct-connected form between the framework component 430.

Cup 450 has circumferential wall 452 and diapire 454.Diapire 454 has the hole 456 that the tolerable syringe needle therefrom passes.In this special case, be provided with lath 458, be used for limiting circumferential wall 452 inboard passages, thereby cup 450 more easily is connected on the needle hub near diapire 454 places.Also comprise a linking arm 460 in the present embodiment, it extends near the place of diapire 454 from cup 450.Linking arm 460 is used for cup 450 is connected to roll over stretching on the framework 430.Linking arm 460 is stretched framework 430 for flexibly connecting with can rolling over.

In this embodiment, can roll over and stretch framework 430 many use are arranged.It can be used to cup 450 is linked to each other with needle point top cover 410, and can be used to releasably top cover 410 is fixed on the far-end of needle point.It also can be used to make needle point top cover 410 to slide shank, and helps top cover 410 to rotate around needle point.In addition, it also helps to keep the position of rotation of needle point top cover 410.

Shown in Figure 11 and 12, can roll over and stretch framework 430 and can comprise a wishbone section 432 and a lower section 440.Wishbone section 432 has two arms 434 and a seat 436.The arm 434 of wishbone section flexibly connects with the linking arm 460 of cup.Lower section 440 has a upper end 442 and a lower end 444.The seat 436 of wishbone section and 442 flexible linking to each other of the upper end of lower section 440.The lower end 444 of lower section and 410 flexible linking to each other of top cover.There are two outstanding clamping elements 448 to be installed on the lower section 440.Wishbone section 432 has formed an opening or has claimed a device, and when rolling over when stretching framework 430 bending, clamping element 448 can therefrom pass.

Figure 12 has also showed a pressure platform 446, and it finally contacts with lever arm 420 and makes top cover 410 produce rotation.Pressure platform 446 is adjacent with lock face (or title locking edge) 449.Lock face 449 is used for stretching framework 430 and being fixed on the cup 450 can rolling over can roll over when stretching framework and turning up.Lock face 449 will discuss in more detail below.

Figure 12 has also showed a pair of outstanding clamping element 448, and it stretches out from lower section 440, as protection position locking device.After syringe needle uses, clamping element 448 can be rolled over as one and stretch framework 430 and be fixed on device on the shank.Can roll over and stretch framework 430 and be fixed on and can guarantee on the shank that top cover 410 remains on rotation position or torsiversion, and make top cover 410 remain on the protection position, top cover 410 can upwards not slided back along shank like this, and needle point is come out.

Figure 13 has showed thereby how cup 450 rotates for syringe needle passes cup 450 and links to each other with syringe to prepare.Lath 458 is as a device, when syringe links to each other with syringe needle in the cup or separates, can be used to syringe needle is carried out orientation and prevent that syringe needle from rotating in cup.Cup (or claiming the syringe connector) 450 also has a projection (or claiming the locking protuberance) 462.Projection 462 detachably with lock face 449 engagement, thereby when rolling over when stretching framework 430 and bending as shown in Figure 16, provide a locking device.

Figure 13 has also showed lid 418 rotation closed roofs 410 and has formed the situation in chamber 428 shown in Figure 14.In this embodiment, 422 limits 424 that have a part to tilt, the hole on the lid 418 (or claiming eye).The limit 424 that part tilts can make top cover 410 cast-over point rotation more easily as shown in Figure 9.

Top cover 410 has an annular ditch 426 in the hole around (or claiming eye) 414.Its after the point rotation of top cover 410 cast-overs, thereby by the needle point constraint being helped to prevent needle point from 414 unexpectedly emerging once more from the hole.

Figure 14 described cup 450 postrotational situations, thereby and showed that direction that syringe needle inserts prepares for needle point guard safety cap assembly 400 links to each other with syringe.Figure 14 has also described the chamber 428 in the top cover 410 that has sealed.This chamber not only can cover needle point in this embodiment, also can collect from the effusive fluid of needle point.

Among Figure 14, the arrow on top cover 410 next doors of having sealed indicates the direction of top cover 410 rotations of having sealed, and just gets ready for needle point guard safety cap assembly 400 links to each other with syringe after the rotation.To can make the syringe needle pass both after the cup 450 and top cover 410 rotations of having sealed, thereby get ready with being connected of syringe for needle point guard safety cap assembly 400.

Thereby Figure 15 has described needle point guard safety cap assembly 400 to join for receiving the situation that needle guard 480 is prepared with syringe 490.Although in this embodiment, described assembly is to be connected on the needle hub 494, and it also can be connected on the syringe 492, thereby a device that links to each other with syringe 490 is provided.

As shown in figure 15, when load onto needle point guard safety cap assembly 400 and for the use of needle guard 480 ready after, can roll over and stretch framework 430 and begin bending.Figure 15 also showed and can roll over when stretching framework 430 bending, and one of them clamping element 448 is the sight from stretching out between the arm 434 of wishbone section 432 how.Figure 16 showed can roll over stretch the folding or bending of framework 430 after, the situation of one of them clamping element 448 from stretching out between the arm 434 of wishbone section 432.Can be clear that from Figure 16, when can roll over stretch framework 430 bending after, two clamping elements 448 all can stretch out between the arm 434 of wishbone section 432.

Figure 15 has also described the projection (or claiming the locking protuberance) 462 and the situation of lock face (or claiming locking edge) 449 before using needle guard 480 of cup 450.Projection 462 on the cup 450 provides a face, and the locking edge 449 that can roll on the precious framework 430 contacts with it, thereby a releasable locking device is provided.The arm 434 of wishbone section can make projection 462 contact with lock face 449.When Figure 16 has also described needle guard pin has been covered, the situation of lock face 449 and projection 462 engagements.

Can be clear that from Figure 16, prevent that syringe needle is contaminated before use thereby top cover 410 is suitable for receiving needle guard 480.In this embodiment, the diapire 454 of lid (or claiming roof) 418 and cup 450 is in abutting connection with contaminated to prevent syringe needle.Having needle point guard safety cap assembly 400 and installing the syringe of needle guard 480 described in Figure 16 is that the user takes appearance before use.The user only needs needle guard is just removed and can use syringe according to general method when using syringe.Intermeshing projection 462 and lock face 449 can be used for preventing that top cover 410 from sliding from shank in the process that needle guard 480 is removed.

After the use, stretch framework 430 and lock face 449 shifted out from projection 462 get final product thereby user's only with hand refers to push away rolling over of having bent.In this embodiment, when needle point medicated cap 410 during near needle point, pressure platform 446 near and finally contact with lever arm 420.After the contact, stretch framework 430 power is added on the lever arm 420 thereby continue to push away to roll over.Greatly in the time of contact, needle point 414 comes out to enter the chamber 428 from the hole.After needle point comes out from hole 414, corresponding to the thrust of lever arm 420, top cover 410 422 rotations and therefore rotating around the hole around needle point.

Stretch framework 430 corresponding to user's promotion during near shank when rolling over, clamping element 448 surrounds with the pin engagement and with pin, can roll over like this to stretch framework 430 and just be held the location.And a kind of device is provided thus, thus this device keeps top cover 410 by engaging of keep-up pressure platform 446 and lever arm 420 or is fixed on respect to the postrotational position of needle point, and and then prevent that needle point from 414 coming up from the hole again.It also can be used to provide a kind of device, and this device can prevent to roll over to be stretched framework 430 bending and prevent that top cover 410 is sliding and needle point is exposed to last time along shank.Therefore, clamping element 448 provides a kind of device that needle point top cover 410 is fixed on the protective position of pin.

Annular ditch 426 is used for limiting needle point and prevents that needle point from 414 coming up from the hole again.Thereby this ditch also helps to collect the fluid that flows out from needle point can not run out of fluid easily from the needle point medicated cap.Hole 422 tightly is centered around around the shank, and the fluid in the cavity volume can be from the hole 422 spill like this.In addition, also spill the excess fluid of coming in order to ensure the hole 414 from the diapire 416 of top cover 410 simultaneously for convenience and be collected into, when preparing to handle, needle guard 480 can place on the top cover 410.

Though only disclose several embodiments of the present invention, on the basis that does not break away from claim of the present invention, also had many improvement or other embodiment.

Claims

1. needle point guard safety cap assembly, it is used for safely the needle point of syringe is covered and protects after using syringe, and described assembly comprises:

One syringe connector, it is used for needle point guard safety cap assembly is connected on the needle hub of syringe firmly;

One needle point top cover, its hollow part by an elongation constitutes, and this parts one end opening is used for syringe needle is received wherein, and the other end is sealed by an end wall, and a hole is arranged on the end wall, and syringe needle can pass from this hole;

Can roll over for one and stretch framework, this can roll over to stretch a near-end and a far-end on the framework, and the near-end far-end that links to each other with the syringe connector then links to each other with the needle point top cover; Can roll over and stretch framework and can be manually promote top cover, and make the end wall of top cover finally surpass the summit of needle point along pin;

It is characterized in that: described assembly also comprises a lid, and it is used for the opening of anesthesia needle pinnacle lid, also has the hole that can allow syringe needle therefrom pass on this lid, thereby pin can pass hole on this lid and the hole on this needle point top cover; And

The needle point top cover is supported by the hole on the lid, and when top cover moves on around the rotation of the hole on the lid, up to the inboard of needle point, enter a protection position by the top cover end wall that sealed, needle point can not pass the hole on the top cover on this position.

2. a kind of needle point guard safety cap assembly as claimed in claim 1 is characterized in that: wherein lid pivotally is fixed on the top cover; And syringe connector, top cover, lid and can roll over that to stretch framework integrally formed by plastic material.

3. a kind of needle point guard safety cap assembly as claimed in claim 1, it is characterized in that: top cover wherein further comprises a cavity volume, cavity volume is formed on the end wall adjacent with the hole, the hole is as the passage of pin, when the needle point top cover works, cavity volume is used for needle point is closed, thereby prevents that needle point from coming up from Kong Zhongzai.

4. a kind of needle point guard safety cap assembly as claimed in claim 3, it is characterized in that: on the needle point top cover, further comprise a fulcrum, can roll over simultaneously and stretch framework when the top cover end wall exceeds the summit of needle point, needle point be entered in the cavity volume thereby can further act on the fulcrum and top cover is rotated.

5. a kind of needle point guard safety cap assembly as claimed in claim 1, it is characterized in that: wherein can roll over and stretch framework and further comprise a near-end frame section and a far-end frame section, link to each other with hinge can rolling over the centre of stretching framework between the frame section, hinge can roll over stretch that framework is preceding by stretching, the needle point top cover is positioned at closed position when not covering needle point, at this moment near-end and far-end frame section are substantially parallel each other, hinge-opening, framework can extend.

6. a kind of needle point guard safety cap assembly as claimed in claim 5, it is characterized in that: also further comprise at least one clamping element on the framework can rolling over to stretch, this clamping element can roll over stretch the framework full extension, needle point can irreversibly be engaged on the syringe needle when being in described protection position.

7. a kind of needle point guard safety cap assembly as claimed in claim 1, it is characterized in that: also further comprise the interlocking part on the framework with rolling over to stretch at the syringe connector, this interlocking part releasably is fixed on needle point guard safety cap assembly to roll over to be stretched framework and is in folding state, and provides a sense of touch indication when framework stretches can rolling over to stretch.

8. a kind of needle point guard safety cap assembly as claimed in claim 7, it is characterized in that: wherein the interlocking part on the syringe connector comprises a projection, a spherical termination that has increased is arranged on the projection, can roll over the interlocking part of stretching on the framework and then comprise a slit, its width is less than the diameter of spherical termination; Projection and slit lay respectively at the syringe connector and can roll over to be stretched on the framework, like this when can roll over stretch framework be in folded state, when the needle point top cover is in away from the punctured bit of needle point, projection is passed slit by its spherical termination and is meshed with slit, and the syringe needle top cover releasably remains on the state of not working thus.

9. a kind of needle point guard safety cap assembly as claimed in claim 1 is characterized in that: wherein the syringe connector further comprises at least one cannelure, its with the syringe needle hub on the engagement of corresponding annular ring.

10. a kind of needle point guard safety cap assembly as claimed in claim 1, it is characterized in that: wherein the syringe connector comprises that further at least one elongated slot is meshed with corresponding long projection on the syringe needle hub, thereby makes needle point guard safety cap remain on fixed radial direction with respect to the syringe needle hub.

11. a kind of needle point guard safety cap assembly as claimed in claim 1 is characterized in that: wherein the needle point top cover is used to receive a needle guard, thereby needle guard is covered syringe needle at the needle point top cover during away from needle point.

12. the needle point protection assembly that can be connected in syringe tray initially allows syringe needle to stretch out and enters spendable operating position, can put in a latched position then, in this position, needle point is in a kind of complete guard mode, comprising:

An exercisable syringe connector is used for securely needle point being protected assembly to be connected on the needle hub of a syringe;

Can roll over the framework of stretching for one, this framework a hinge is arranged is connected in near-end and far-end of syringe connector;

A needle point lid, it has the hollow structure of a lengthening, and opening is at one end arranged, and at its other end an end wall with holes is arranged, syringe needle stretches out by this hole during operation, and a laterally mobile segment distance also has a needle point to receive groove from this hole on described end wall;

This lid at a side place of its opening by hinge be connected in this and can roll over the far-end of stretching framework;

It is characterized in that this needle point protection assembly also comprises:

Be connected in the lid of lid opening, this lid also has a hole hinge, can stretch out through this vent needle head, and the opening of closed roof spare at ordinary times, this syringe needle can pass this two holes when use is stretched out like this;

After syringe needle was finished using, this can be rolled over and stretch framework and can the person of being operated fully extend with a hand operated, passed the hole of lid so that syringe needle continues elongation and remained in the lid, but no longer pass the hole of lid; With

This lid and being connected in can be rolled over the hinge of stretching framework and be connected and integrally constitute with plastic material, and like this, when the syringe needle far-end no longer passed the hole of lid, rotatablely moving of hinge moved laterally in the groove of lid needle point.

13. needle point protection assembly as claimed in claim 12, it is characterized in that: wherein this groove on the syringe needle lid end wall is being connected a relative side with lid with the framework hinge.

14. needle point protection assembly as claimed in claim 12, it is characterized in that: wherein whole assembly integrally constitutes with plastic material.

15. needle point protection assembly as claimed in claim 12; it is characterized in that: also comprise a fulcrum shaft on the needle point lid; when the end wall of lid exceeds the summit of needle point; can roll over and stretch that framework can further be operated so that fulcrum shaft action and cause that therefore lid rotates, so the summit of syringe needle enters this groove.

16. needle point protection assembly as claimed in claim 12; it is characterized in that: wherein can roll over the near-end of stretching framework and comprise a wishbone section; this wishbone section is used to connect a cup that is connected with syringe; this wishbone section has two arms and a seat; these two arms are connected in this cup flexibly; so, cup can rotate with respect to this wishbone section by two flexibly connecting of arm.

17. a needle point guard safety cap assembly, it is used for safely the needle point of syringe is covered and protects after syringe uses, and described assembly comprises:

A syringe connecting device, it is used for needle point guard safety cap assembly is connected on the needle hub of syringe firmly;

One needle point top cover, it adopts the shape of the hollow part of elongation, and this parts one end opening is used for the syringe needle income wherein, and the other end almost by end wall sealing, has a hole on the end wall, and syringe needle can pass from this hole;

It is characterized in that described assembly also comprises:

A locking device, it is used for the opening of closed roof, but this device can allow syringe needle therefrom pass, and this device is integrally formed;

A framework that is connected on syringe connecting device and the needle point cover device far-end, this framework can be manually promote top cover along pin, and make the end wall of top cover finally surpass the summit of needle point;

Then, top cover is supported by the hole on the locking device, and moving on when top cover, top cover rotates around the hole on the locking device, up to the inboard of needle point through the top cover end wall that sealed, enter a protection position, needle point can not pass the hole on the top cover on this position;

Needle point guard safety cap assembly is one of the forming.

18. further comprise manual-lock as claim 17 as the needle point guard safety cap assembly of stating, it is fixed top cover and makes needle point be in described protection position.

19. needle point guard safety cap assembly as claimed in claim 17, it is characterized in that: described syringe connecting device further comprises a projection, a spherical termination is arranged on this projection, then comprise a slit on the described framework, the width of described slit is less than the width of described spherical termination, make described spherical termination can pass described slit and make the engagement of described projection and this slit, top cover releasably is locked in punctured bit away from needle point.

20. a needle point guard safety cap assembly comprises:

A) cup, it comprises:

(i) circumferential wall, and have a diapire to be connected on the circumferential wall forming a cup,

(ii) this cup is used for being connected on the syringe,

(iii) the diapire of cup has a hole, and this hole can make syringe needle therefrom pass,

It is characterized in that described cup also comprises:

(iv) a pair of linking arm, it is protruding near the position of cup diapire from circumferential wall, and

(v) locking projection, it stretches out near position of cup diapire from circumferential wall;

Described needle point guard safety cap assembly also comprises: b) can roll over the section of stretching for one, it has two sections, comprising:

(i) wishbone section, it has two arms and a seat, and the linking arm of arm and cup flexibly connects, like this, the axle rotation that cup forms between can the arm around the linking arm of cup and wishbone section; And

(ii) lower section, it has top and bottom, the upper end flexibly connects with the seat of wishbone section, lower section has a lock slots in the position near the lower end, when rolling over that the section of stretching is turned up and lower section when being in the position of contiguous cup, this lock slots is locked in lower section on the locking projection of cup with releasable form; And

C) a needle point medicated cap, it flexibly connects the lower end in lower section, and this needle point medicated cap comprises:

(i) circumferential wall, a roof and a diapire, the three forms a chamber; An eye is (ii) respectively arranged on the roof of needle point medicated cap and the diapire, and syringe needle can pass from eye; And

Described needle point medicated cap is integrally formed.