CN2616223Y - Self-ruined safety syringe - Google Patents
Self-ruined safety syringe Download PDFInfo
- Publication number
- CN2616223Y CN2616223Y CN 03231576 CN03231576U CN2616223Y CN 2616223 Y CN2616223 Y CN 2616223Y CN 03231576 CN03231576 CN 03231576 CN 03231576 U CN03231576 U CN 03231576U CN 2616223 Y CN2616223 Y CN 2616223Y
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- CN
- China
- Prior art keywords
- core bar
- needle holder
- spline
- groove
- self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a self-destruction safety injector, comprising a pinhead, a pinhead stock, a core pole, a casing and the like. The utility model is characterized in that the little bottom cover of the pinhead stock chamber is provided with spline key spot holes, a snag and a groove, wherein the snag is arranged with a positive boss, and the middle portion of the pinhead stock is provided with spline teeth embedded in a sealing manner into the cervix between the spline teeth and a cirque. The top portion of the boss of the core pole is provided with a clicker joint of a clicker mechanism which is formed together by the clicker maternal groove of the inner chamber of the circle, and the lateral wall of the boss of the core pole is provided with a salient which matches with a screw groove of the inner chamber. The spline and positive boss can make the pinhead stock fixed hard on the casing. The utility model has the advantages that the pinhead stock can fix hard on the casing and disentangle automatically to make the pinhead contract inside, and thereby really realize two-way protection between the patient and the medical staff, simple construction, convenient usage and damageable properties.
Description
Technical field
This utility model relates to syringe, can make to contract in the syringe needle with unclamping automatically again of fixedly securing of overcoat and realizes the self-destroy safety injector of damaging of bidirectional protective thereby especially relate to a kind of needle holder.
Background technology
In medical industry, in order to prevent cross infection, disposable syringe is used widely.Mode such as core bar reaches disposable purpose though fracture after disposable syringe has been injected by the medical worker; but the syringe after the self-destruction is in processing procedure subsequently; still exist and very easily sting the shortcoming that scratches the medical worker, causes new infection chance, can't reach the purpose of patient and medical worker's bidirectional protective.
At present; in order to reach the purpose of bidirectional protective; that come out and applied for adopting in the safety injector of patent manual syringe needle internal withdraw type structure; basically all adopt core bar with needle holder when core bar is shifted the end onto mutual kayser together, when core bar is pulled back needle holder is retracted structure in the overcoat together with syringe needle, this structure can be avoided exhausted needle sting medical personnel.But manually all there is the connectivity problem between a needle holder and the overcoat in syringe needle internal withdraw type safety injector, class formation by rubber ring or the protruding circle by syringe needle, needle holder itself, boss, protruding hoop and certain position of overcoat form interference fit when solving, this connection should firmly again can not be sacrifices consisting of an ox, a sheep and a pig solid, if connect sacrifices consisting of an ox, a sheep and a pig when having consolidated breaking-up needle holder may draw to return again, if connect insecure will cause leakage and when injection syringe needle retreat automatically, syringe needle just retreats automatically and can't inject.In the existing solution, also have screw thread is set on needle stand or needle holder, although needle stand or needle holder can fixedly secure on the coat, be threaded but all need unclamp directly or indirectly, will unclamp the subjective consciousness that the operation that is threaded has great expectations of the operator, the hidden danger that just exists disposable use to damage with hands, simultaneously, use screw thread on the syringe needle, this syringe needle has just become off-gauge syringe needle, needs exchange needle to make troubles when this also uses for medical personnel.In a word, how really to realize the purpose of patient and medical worker's bidirectional protective, become a puzzlement medical industry very problem of headache of making us for many years.
Summary of the invention
Thereby the purpose of this utility model is to provide a kind of needle holder to fixedly secure with overcoat and can unclamps automatically that making contracts in the syringe needle really to realize patient and medical worker's bidirectional protective, simple in structure, easy to use, the self-destroy safety injector that can damage.
The purpose of this utility model is achieved in that this utility model is made up of syringe needle, needle holder, sealing member, piston, core bar, overcoat and core bar location-plate, be provided with oval-shaped crimping in jacket bottom, big bottom front end at the overcoat top is provided with the needle holder chamber, feature is that the handle in the needle holder chamber covers and is provided with spline slot type hole, handle lid edge is provided with the protruding tooth that constitutes spline slot type hole, is the groove in spline slot type hole between the adjacent protruding tooth; The needle holder front end is for passing the cone joint in spline slot type hole, and the rear end is an annulus, is provided with the spline tooth that can pass groove at the needle holder outer wall, is provided with the cervical region that is used for embedding sealing member between spline tooth and annulus.
Be provided with the positive stop lug boss that can limit the needle holder anglec of rotation on the protruding tooth in spline slot type hole, the bottom of spline tooth is the inclined plane with a sealed angle.
Be provided with the female groove of kayser on the inner chamber top of annulus, be provided with helicla flute, be provided with the kayser head that constitutes locking mechanism with the female groove of kayser jointly on the boss top of core bar, on the boss sidewall of core bar, be provided with the projection that matches with helicla flute at interior cavity wall.
Be with two half elliptic core bar location-plates on crimping, the centre of core bar location-plate is provided with "T"-shaped groove, the cross recess that intermediate formation one restriction core bar can only moving linearly when the amalgamation of two half elliptic core bar location-plates was entangled crimping together.
Piston can be a kind of in the combination of the seal disc of core bar or piston head and piston ring, is provided with one or more than one piston grooves that embed piston ring at the sidewall of piston head.
The positive stop lug boss restriction needle holder anglec of rotation is no more than 90 °, and the bottom of spline tooth is the inclined plane at 0-25 ° of sealed angle.
Spline slot type hole is provided with one or more groove, be provided with at the needle holder outer wall and one or morely can pass groove and the spline tooth consistent with groove shapes, the axial shape of groove and spline tooth can for triangle, rectangle, rectangle, trapezoidal, fan-shaped or semicircle in a kind of.
Interior cavity wall at annulus is provided with one or more than one helicla flutes, on the boss sidewall of piston, be provided with one or more than one projectioies that match with helicla flute, the shape of cross section of helicla flute and projection can for triangle, rectangle, rectangle, trapezoidal, fan-shaped or semicircle in a kind of.
Be provided with tearable screens sheet in the bottom of core bar.
This utility model is provided with spline slot type hole because the handle in the needle holder chamber covers, protruding tooth, groove, be provided with the spline tooth that can pass groove at the needle holder outer wall, between spline tooth and annulus, be provided with the cervical region that is used for embedding sealing member, and on protruding tooth, be provided with the positive stop lug boss that can limit the needle holder anglec of rotation, so behind the needle holder chamber of needle holder being slipped into overcoat, allow the spline tooth pass the groove in spline slot type hole, then to the right rotation needle holder to run into positive stop lug boss change motionless till, at this moment, the protruding transposition of teeth in spline tooth and spline slot type hole, be built up circumferential engagement, again because the bottom of spline tooth is the inclined plane with a sealed angle, the inclined plane of spline tooth bottom is with the little bottom in needle holder chamber, revolve tighter and tighter along with the increase of the anglec of rotation between sealing ring and the needle holder, both realize the sealing of overcoat, also needle holder had been securely fixed in outer having put.And be matched in clearance between the external diameter of the annulus of needle holder rear end and the outer casing internal diameter, thus needle holder when entering or withdrawing from spline slot type hole resistance less, all very light when assembling and when pulling back needle holder like this.
This utility model is provided with helicla flute at the interior cavity wall of annulus, on the boss sidewall of piston, be provided with the projection that matches with helicla flute, helicla flute and projection constitute screw mechanism, it has adopted single head or multiple thread structure, when core bar linearly moves, projection embeds in the helicla flute, force needle holder from moving reverse rotation, the protruding tooth in the spline slot type hole that spline tooth on the needle holder and needle holder chamber handle cover reverts to non-misalignment position, and this moment, the spline tooth can waltz through the groove in spline slot type hole again.When putting in place with the needle holder reverse rotation; the vertical kayser head of core bar boss also moves and puts in place; insert in the female groove of the vertical kayser of annulus inner chamber and locked being integral mutually; the female groove of kayser head and kayser constitutes locking mechanism jointly; just needle holder is withdrawn in the overcoat together with syringe needle when pulling back core bar; push back core bar the needle tubing of syringe needle is pressed into helical form; core bar fractures; syringe is just destroyed and can not reuse; the medical worker is contact needle again, thereby really realizes patient and medical worker's bidirectional protective.
Needle holder, needle holder chamber and sealing member are general parts in this utility model, the needle holder assembly that these three parts are formed is divided into straight cutting joint type and two kinds of forms of nipple formula, the needle holder assembly is installed in and overcoat central lines or the position that do not overlap, just can forms the mesocrania of all size or head dummy safety injector partially.Use different pistons can form the three-member type or the two-piece type safety injector of all size again.
The utlity model has following characteristics:
1. simple in structure, sealing is reliable, and needle holder can connect on the coat securely;
2. employing standard needle, easy to use;
3. employing routine operation, the medical worker does not increase operational motion, just can successfully open the connection between needle holder and the overcoat automatically, like a cork needle holder is retracted in the overcoat together with syringe needle, and can damage, and really accomplishes disposable use;
4. can make the self-destroy safety injector of two formulas, three-member type, mesocrania, inclined to one side head dummy, straight cutting joint and the nipple of all size.
This utility model can really be realized the bidirectional protective to patient and medical personnel, has both prevented patient's cross infection, has avoided medical personnel to suffer the needle stick injury of exhausted syringe needle again and the infection that causes, is a kind of new type of safe syringe.
Description of drawings
Fig. 1 is that two formula mesocrania nipple safety injectors are the structural representation of embodiment 1;
Fig. 2 is the structural representation of overcoat among the embodiment 1;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the cutaway view of nipple needle holder among the embodiment 1;
Fig. 5 is the right view of Fig. 4;
Fig. 6 is the left view of Fig. 4;
Fig. 7 is that spline tooth A is to view;
Fig. 8 is the structural representation of core bar among the embodiment 1;
Fig. 9 is the vertical view of Fig. 8;
Figure 10 is two core bar location-plates amalgamation structural representation together among the embodiment 1;
Figure 11 be a core bar location-plate partly cut open sketch map;
Figure 12 is the state diagrams of two formula mesocrania nipple safety injectors when finishing using;
Figure 13 is the structural representation of embodiment 2 for the inclined to one side head dummy straight cutting of three-member type joint safety injector;
Figure 14 is the structural representation of overcoat among the embodiment 2;
Figure 15 is the vertical view of Figure 14;
Figure 16 is the cutaway view of straight cutting joint needle holder among the embodiment 2;
Figure 17 is the right view of Figure 16;
Figure 18 is the left view of Figure 16;
Figure 19 is the structural representation of core bar among the embodiment 2;
Figure 20 is the vertical view of Figure 19;
State diagram when Figure 21 finishes using for the inclined to one side head dummy straight cutting of three-member type joint safety injector.
The specific embodiment
Below in conjunction with embodiment and contrast accompanying drawing this utility model is described in further detail.
1: two formula mesocrania of embodiment nipple safety injector
This utility model is made up of syringe needle 1, needle holder 2, sealing member 3, piston 4, core bar 5, overcoat 6 and core bar location-plate 7, is provided with oval-shaped crimping 69 in overcoat 6 bottoms.
Be provided with the needle holder chamber 62 of an annular at big bottom 61 front ends at overcoat 6 tops, the central lines of the centrage in needle holder chamber 62 and overcoat 6, on the handle lid 63 in needle holder chamber 62, be provided with spline slot type hole 64, handle covers 63 edges and is provided with the protruding tooth 65 that constitutes spline slot type hole 64, on protruding tooth 65, be provided with the positive stop lug boss 66 that can limit needle holder 2 anglecs of rotation, be the groove 67 in spline slot type hole 64 between the adjacent protruding tooth 65, groove 67 is 4 grooves 671,672,673,674; Needle holder 2 front ends are for passing the cone joint 26 in spline slot type hole 64, cone joint 26 is a screw-type, the rear end is an annulus 22, be provided with the spline tooth 21 that can pass groove 67 at needle holder 2 outer walls, between spline tooth 21 and annulus 22, be provided with the cervical region 25 that is used for embedding sealing member 3, spline tooth 21 is consistent with the quantity of the groove 67 in spline slot type hole 64, is 4 teeth 211,212,213,214, and the bottom of spline tooth 21 is the inclined plane with a sealed angle 28.
Be provided with the female groove 23 of kayser on inner chamber 27 tops of annulus 22, be provided with helicla flute 24 at inner chamber 27 inwalls, piston 4 is the seal disc 55 of core bar 5, be provided with and the female groove 23 common kayser heads 51 that constitute locking mechanism of kayser on boss 56 tops of core bar 5, on boss 56 sidewalls, be provided with the projection 52 that matches with helicla flute 24.Helicla flute 24 is the dextrorotation formula four-head female thread that four thread grooves 241,242,243,244 form, the four-head pin thread that projection 52 is made up of four cylinders 521,522,523,524.
On a rib 53 of core bar 5 bottoms, be provided with the tearable screens sheet 54 of square.
On crimping 69, be with two half elliptic core bar location-plates 7, the centre of core bar location-plate 7 is provided with "T"-shaped groove, the cross recess that intermediate formation one restriction core bar 5 can only moving linearly when two half elliptic core bar location-plate 7 amalgamations were entangled crimping 69 together.
Positive stop lug boss 66 restriction needle holder 2 anglecs of rotation are no more than 90 °, and the bottom of spline tooth 21 is the inclined plane at 0--25 ° of sealed angle 28.
The axial shape of groove 67 and spline tooth 21 can for triangle, rectangle, rectangle, trapezoidal, fan-shaped or semicircle in a kind of.The shape of cross section of helicla flute 24 and projection 52 can for triangle, rectangle, rectangle, trapezoidal, fan-shaped or semicircle in a kind of.
During assembling, earlier sealing member 3 is enclosed within cervical region 25 places of needle holder 2, needle holder 2 is slipped in the needle holder chamber 62 of overcoat 6, allow spline tooth 21 pass the groove 67 in spline slot type hole 64, then to right rotation needle holder 2 to run into positive stop lug boss 66 change motionless till, at this moment, spline tooth 21 misplaces, is built up circumferential engagement with the protruding tooth 65 in spline slot type hole 64; Because the bottom of spline tooth 21 is the inclined planes with a sealed angle 28, therefore,, will draw tighter and tighter between the handle in needle holder chamber 62 lid 63, sealing member 3 and the needle holder 2 along with the increase of the anglec of rotation, this moment, needle holder 2 just was securely fixed on the overcoat 6.Load onto the core bar 5 of two formulas, arbitrary the rib 53 that makes core bar 5 is consistent with minor axis 68 directions of the crimping 69 of overcoat 6, and the screens sheet 54 of core bar 5 rear ends is stayed the outside of overcoat crimping 69, load onto two core bar location-plates 7, promote core bar 5 screens sheet 54 has just been touched till the core bar location-plate 7.
During use, earlier, just can use syringe routinely with the hands screens sheet 54 of tearing.In whole injection process, because the position-limiting action of core bar location-plate 7, restriction core bar 5 can only make to be parallel to the rectilinear motion of overcoat 6 centrages.When injecting approaching finishing, four projectioies 521 of core bar 5,522,523,524 will be respectively and four helicla flutes 241 of needle holder 2,242,243,244 are meshed, propelling along with core bar 5, the projection 52 of core bar 5 will force needle holder 2 reverse rotations by helicla flute 24, spline tooth 21 reverts to non-dislocation state again with the protruding tooth 65 in spline slot type hole 64, when putting in place with needle holder 2 reverse rotations, the female groove 23 of kayser on needle holder 2 and the core bar 5, kayser head 51 also moves and puts in place and mutual locked being integral, and just needle holder 2 is withdrawn in the overcoat 6 together with syringe needle 1 when pulling back core bar 5.Push back core bar 5 needle tubing of syringe needle 1 is pressed into helical form, the core bar 5 that fractures, syringe is just destroyed and can not reuse.
Embodiment 2: the inclined to one side head dummy straight cutting of three-member type joint safety injector
The structure of the syringe needle 1 among the embodiment 2, needle holder 2, sealing member 3, core bar 5, overcoat 6 and core bar location-plate 7 is substantially the same manner as Example 1, and difference is:
The front end cone joint 26 of needle holder 2 is direct insertion.
The assembling of embodiment 2, use are identical with embodiment 1.
Claims (9)
1, a kind of self-destroy safety injector, by syringe needle (1), needle holder (2), sealing member (3), piston (4), core bar (5), overcoat (6) and core bar location-plate (7) are formed, be provided with oval-shaped crimping (69) in overcoat (6) bottom, big bottom (61) front end at overcoat (6) top is provided with needle holder chamber (62), it is characterized in that: on the little bottom (63) of needle holder chamber (62), be provided with spline slot type hole (64), little bottom (63) edge is provided with the protruding tooth (65) that constitutes spline slot type hole (64), is the groove (67) in spline slot type hole (64) between the adjacent protruding tooth (65); Needle holder (2) front end is for passing the cone joint (26) in spline slot type hole (64), the rear end is annulus (22), be provided with the spline tooth (21) that can pass groove (67) at needle holder (2) outer wall, between spline tooth (21) and annulus (22), be provided with the cervical region (25) that is used for embedding sealing member (3).
2, self-destroy safety injector as claimed in claim 1 is characterized in that: be provided with the positive stop lug boss (66) that can limit needle holder (2) anglec of rotation on protruding tooth (65), the bottom of spline tooth (21) is for having the inclined plane at a sealed angle (28).
3, self-destroy safety injector as claimed in claim 1 or 2, it is characterized in that: be provided with the female groove (23) of kayser on inner chamber (27) top of annulus (22), be provided with helicla flute (24) at inner chamber (27) inwall, be provided with the kayser head (51) that constitutes locking mechanism with the female groove of kayser (23) jointly on boss (56) top of core bar, on boss (56) sidewall, be provided with the projection (52) that matches with helicla flute (24).
4, self-destroy safety injector as claimed in claim 3, it is characterized in that: on the crimping (69) of overcoat (6), be with two half elliptic core bar location-plates (7), the centre of core bar location-plate (7) is provided with "T"-shaped groove, the cross recess that intermediate formation one restriction core bar (5) can only moving linearly when crimping (69) was entangled in two half elliptic core bar location-plates (7) amalgamation together.
5, self-destroy safety injector as claimed in claim 4, it is characterized in that: spline slot type hole (64) is provided with one or more groove (67), be provided with at needle holder (2) outer wall and one or morely can pass groove (67) and the spline tooth (21) consistent with groove (67) shape, the axial shape of groove (67) and spline tooth (21) can for triangle, rectangle, rectangle, trapezoidal, fan-shaped or semicircle in a kind of.
6, self-destroy safety injector as claimed in claim 5, it is characterized in that: inner chamber (27) inwall in annulus (22) is provided with one or more than one helicla flutes (24), on boss (56) sidewall of core bar (5), be provided with one or more than one projectioies (52) that match with helicla flute (24), the shape of cross section of helicla flute (24) and projection (52) can for triangle, rectangle, rectangle, trapezoidal, fan-shaped or semicircle in a kind of.
7, self-destroy safety injector as claimed in claim 6, it is characterized in that: piston (4) can be a kind of in the combination of piston head (58) and piston ring (59) of the seal disc (55) of core bar (5) or core bar (5), is provided with one or more than one piston grooves (57) that embed piston ring (59) at the sidewall of piston head (58).
8, self-destroy safety injector as claimed in claim 7 is characterized in that: positive stop lug boss (66) restriction needle holder (2) anglec of rotation is no more than 90 °, and the bottom of spline tooth (21) is the inclined plane at 0-25 ° of sealed angle (28).
9, self-destroy safety injector as claimed in claim 8 is characterized in that: be provided with tearable screens sheet (54) in the bottom of core bar (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03231576 CN2616223Y (en) | 2003-05-21 | 2003-05-21 | Self-ruined safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03231576 CN2616223Y (en) | 2003-05-21 | 2003-05-21 | Self-ruined safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2616223Y true CN2616223Y (en) | 2004-05-19 |
Family
ID=34248239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03231576 Expired - Lifetime CN2616223Y (en) | 2003-05-21 | 2003-05-21 | Self-ruined safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2616223Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108852376A (en) * | 2018-07-27 | 2018-11-23 | 陈小桥 | Disposable blood sampling blood pack unit with sealed cap |
| CN111887483A (en) * | 2019-12-17 | 2020-11-06 | 江门摩尔科技有限公司 | Atomizer and electronic atomization device |
-
2003
- 2003-05-21 CN CN 03231576 patent/CN2616223Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108852376A (en) * | 2018-07-27 | 2018-11-23 | 陈小桥 | Disposable blood sampling blood pack unit with sealed cap |
| CN111887483A (en) * | 2019-12-17 | 2020-11-06 | 江门摩尔科技有限公司 | Atomizer and electronic atomization device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20051109 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |