CN1546185A - Safety injection needle assembly and safety syringe - Google Patents
Safety injection needle assembly and safety syringe Download PDFInfo
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- CN1546185A CN1546185A CNA2003101065378A CN200310106537A CN1546185A CN 1546185 A CN1546185 A CN 1546185A CN A2003101065378 A CNA2003101065378 A CN A2003101065378A CN 200310106537 A CN200310106537 A CN 200310106537A CN 1546185 A CN1546185 A CN 1546185A
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- safety
- shield
- pedestal
- needle
- linkwork
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Abstract
The invention relates to a safety type injection needle assembly and safety syringe, wherein the safety type injection needle assembly includes a safety sleeve and an injection needle, the safety sleeve is integrated by a base, a shield and a hinge device. A locating hole is arranged on the base of the safety sleeve, the hinge device of the safety sleeve is arranged between the base and the shield.
Description
Technical field
The invention belongs to medical instruments field.
Background technology
Constitute by needle tubing, connecting portion and needle stand with the supporting normal injection pin of ordinary syringe in the market, needle tubing is bonding and fixing by the inwall of connecting portion and needle stand, entry needle also has the sheath that can be nested with on the outer wall that is fixed on needle stand in addition, the effect of sheath is can protect the needle tubing of entry needle before syringe uses, and can prevent that the needle tubing accident from hurting sb.'s feelings; When preparing to use syringe, entry needle is nested with on the conehead that is fixed on syringe by the inwall in the needle stand hole of its needle stand; Also have a kind of and structure ordinary syringe syringe inequality in addition, in this syringe, needle tubing is the part of syringe, the conehead of needle tubing and syringe and the overcoat part that is fixed as one, and sheath then is nested with on the outer wall of the conehead that is fixed on syringe; When the end user when using syringe, at first to take off sheath, all can abandon sheath conveniently basically then, after syringe is finished using, also seldom someone will sheath overlapped again again and get back on the outer wall of needle stand; Or again sheath is overlapped on the outer wall of the conehead of getting back to above-mentioned and structure ordinary syringe syringe inequality again, accidentally will cause the needle tubing accident of entry needle to hurt sb.'s feelings, may cause some serious consequences sometimes, have communicable virus such as also carrying some on the needle tubing of entry needle.
Summary of the invention
The object of the present invention is to provide a kind of property easy to use, safe safety needle assembly and a kind of property easy to use, safe safety injector preferably is provided preferably.
Realize the technical scheme that a kind of safety needle assembly is provided in the object of the invention: intrinsic safety holotype needle assembly has safety shield and entry needle; Safety shield is the integral piece that is made of pedestal, guard shield and linkwork; The pedestal of safety shield is provided with locating hole; The linkwork of safety shield is arranged between pedestal and the guard shield, and pedestal is connected with guard shield by linkwork; The position with respect to linkwork one side of the guard shield of safety shield is the open position; Linkwork has the upset support zone, and the upset support zone that the guard shield of safety shield can be by linkwork overturns with respect to the longitudinal center line of entry needle.
Above-mentioned linkwork is the linkwork of bow tie, knot is supported in elasticity fin and upset with two bendings, the phase junction that knot is arranged on two elasticity fins is supported in upset, the top of each elasticity fin is connected with guard shield, the root of each elasticity fin is connected with pedestal, and the root of each elasticity fin and upset are supported knot and constituted the upset support zone jointly.
Above-mentioned linkwork is to be made of sheet spring and two hinges, hinge is arranged on the both sides of sheet spring, each hinge is provided with upset portion and fixed part, the epimere of the upset portion of each hinge and the top of sheet spring are connected with guard shield, the root of the fixed part of each hinge and sheet spring is connected with pedestal, and the root of the upset portion of the root of sheet spring and each hinge constitutes the upset support zone jointly.
Above-mentioned linkwork is to be made of hinge and two sheet springs, the sheet spring is arranged on the both sides of hinge, hinge is provided with upset portion and fixed part, the epimere of the upset portion of hinge and the top of each sheet spring are connected with guard shield, the root of the fixed part of hinge and each sheet spring is connected with pedestal, and the root of the upset portion of hinge and the root of each sheet spring constitute the upset support zone jointly.
The guard shield of above-mentioned safety shield is when make position turns to open position, and guard shield is 60 ° to 178 ° with respect to the flip angle of the longitudinal center line of entry needle.
Above-mentioned entry needle is to be made of needle tubing and connecting portion, and needle tubing is by connecting portion and bonding being fixed on the pedestal of inwall that is arranged on the connecting hole on the pedestal.
When being to use, the inwall of the locating hole of the pedestal of above-mentioned safety shield can be fixed on the position on the conehead of syringe.
Realize the technical scheme that a kind of safety injector is provided in the object of the invention: syringe has conehead, overcoat, core bar, piston and as the needle tubing of entry needle; Piston is nested with the upper end at core bar; Needle tubing, conehead and overcoat are integral piece; Syringe also has safety shield, and safety shield is the integral piece that is made of pedestal, guard shield and linkwork; The pedestal of safety shield is provided with positioning through hole, and the inwall of the positioning through hole of the pedestal of safety shield matches with the outer wall of the conehead of syringe; The linkwork of safety shield is arranged between pedestal and the guard shield, and pedestal is connected with guard shield by linkwork; The position with respect to linkwork one side of the guard shield of safety shield is the open position; Linkwork has the upset support zone, and the upset support zone that the guard shield of safety shield can be by linkwork overturns with respect to the longitudinal center line of needle tubing; The guard shield of safety shield is when make position turns to open position, and guard shield is 60 ° to 178 ° with respect to the flip angle of the longitudinal center line of needle tubing.
Safety needle assembly of the present invention and safety injector have positive result of use: the safety needle assembly in use, the inwall of the locating hole of the pedestal by safety shield is nested with on the conehead that is fixed on syringe; The position with respect to linkwork one side of the guard shield of safety shield is the open position, and before drawing medicinal liquid, the elastic force of linkwork can make guard shield remain on make position, with the needle tubing of protection entry needle, and can prevent that the needle tubing accident from hurting sb.'s feelings; When preparing to draw medicinal liquid, act on external force on the guard shield of safety shield, then make guard shield pass through of the axial centre alignment side-lower rotation of the upset support zone of its linkwork with respect to entry needle, when external force make guard shield turn to its elasticity fin (or sheet spring) cross the upset critical localisation after, then guard shield need not external force and just turns to open position voluntarily under the effect of the elastic force of elasticity fin (or sheet spring), and finished the upset of guard shield, and the angle that keeps the residence upset exposes needle tubing and draws and liquid medicine injection to make things convenient for syringe; After injection is finished, act on external force on the guard shield of safety shield, the upset support zone that then makes guard shield pass through its linkwork rotates with respect to the axial centre alignment side top of entry needle, when external force make guard shield turn to its elasticity fin (or sheet spring) cross the upset critical localisation after, then guard shield need not external force and is returned to make position with regard to rotating voluntarily under the effect of the elastic force of elasticity fin (or sheet spring), and remain closed, can prevent that the needle tubing accident from hurting sb.'s feelings, reach the safety needle assembly and have property easy to use, safe effect preferably.Therefore safety needle assembly of the present invention is a kind of rational in infrastructure, and property easy to use, safe is the safety needle assembly preferably; And safety injector of the present invention has been because used safety shield, therefore also had rational in infrastructurely, easy to use, and safety is characteristics preferably.
Description of drawings
Fig. 1 is configuration diagram and the rollover effect figure of embodiment 1;
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is that the C of Fig. 1 is to diagrammatic sketch;
Fig. 4 is that the D of Fig. 1 is to diagrammatic sketch;
Fig. 5 is that the B of Fig. 1 is to diagrammatic sketch and rollover effect figure;
Fig. 6 is the configuration diagram of the safety shield among Fig. 1;
Fig. 7 is diagrammatic sketch and the result of use figure that the safety needle assembly of embodiment 1 matches with syringe;
Fig. 8 is the E-E profile of Fig. 7.
Fig. 9 is configuration diagram and the rollover effect figure of embodiment 2;
Figure 10 is that the G of Fig. 9 is to diagrammatic sketch;
Figure 11 is that the H of Fig. 9 is to diagrammatic sketch;
Figure 12 is that the F of Fig. 9 is to diagrammatic sketch and rollover effect figure;
Figure 13 is the configuration diagram of the safety shield among Fig. 9.
Figure 14 is configuration diagram and the rollover effect figure of embodiment 3;
Figure 15 is that the J of Figure 14 is to diagrammatic sketch;
Figure 16 is that the K of Figure 14 is to diagrammatic sketch;
Figure 17 is that the L of Figure 14 is to diagrammatic sketch and rollover effect figure;
Figure 18 is the configuration diagram of the safety shield among Figure 14.
Figure 19 is configuration diagram and the rollover effect figure of embodiment 4;
Figure 20 is the M-M profile of Figure 19.
Figure 21 is configuration diagram and the rollover effect figure of embodiment 5;
Figure 22 is the N-N profile of Figure 21;
Figure 23 is the P-P profile of Figure 21;
Figure 24 is the diagrammatic sketch that the safety needle assembly of embodiment 5 matches with syringe.
Figure 25 is configuration diagram and the rollover effect figure of embodiment 6.
Figure 26 is the configuration diagram and the result of use figure of safety injector of the present invention;
Figure 27 is that the S of Figure 26 is to diagrammatic sketch;
Figure 28 is the R-R profile of Figure 26.
The specific embodiment
Embodiment 1
See Fig. 1 to Fig. 8, the employed material of safety needle assembly of present embodiment meets national standard.The safety needle assembly of present embodiment has safety shield 10 and entry needle 40; Safety shield 10 is the integral pieces that are made of pedestal 11, guard shield 12 and linkwork 20; The pedestal 11 of safety shield 10 is provided with locating hole 111; The linkwork 20 of safety shield 10 is arranged between pedestal 11 and the guard shield 12, and pedestal 11 is connected with guard shield 12 by linkwork 20; The position with respect to linkwork 20 1 sides of the guard shield 12 of safety shield 10 is the open position; Linkwork 20 has upset support zone 30, and the upset support zone 30 that the guard shield 12 of safety shield 10 can be by linkwork 20 overturns with respect to the longitudinal center line of entry needle 40; See Fig. 1, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, linkwork 20 is the linkwork of bow tie, knot 22 is supported in elasticity fin 21 and upset with two bendings, the phase junction that knot 22 is arranged on two elasticity fins 21 is supported in upset, the top of each elasticity fin 21 is connected with guard shield 12, the root of each elasticity fin 21 is connected with pedestal 11, and the root of each elasticity fin 21 and upset are supported knot 22 and constituted upset support zone 30 jointly; See Fig. 1 and Fig. 5, the guard shield 12 of safety shield 10 is when make position turns to open position, and guard shield 12 is 130 ° with respect to the flip angle of the longitudinal center line of entry needle 40; See Fig. 1 and Fig. 6, entry needle 40 is to be made of needle tubing 41 and connecting portion 42, and needle tubing 41 is by connecting portion 42 and bonding being fixed on the pedestal 11 of inwall that is arranged on the connecting hole 112 on the pedestal 11; See Fig. 1 and Fig. 6, the inwall of the locating hole 111 of the pedestal 11 of safety shield 10 can be fixed on the position on the conehead 51 of syringe 50 when being to use.
See Fig. 7 and Fig. 8, the safety needle assembly of present embodiment in use, the inwall of the locating hole 111 of the pedestal 11 by safety shield 10 is nested with on the conehead 51 that is fixed on syringe 50; The position with respect to linkwork 20 1 sides of the guard shield 12 of safety shield 10 is the open position, before drawing medicinal liquid, the elastic force of the elasticity fin 21 of linkwork 20 can make guard shield 12 remain on make position, with the needle tubing 41 of protection entry needle 40, and can prevent that needle tubing 41 accidents from hurting sb.'s feelings; When preparing to draw medicinal liquid, act on external force on the guard shield 12 of safety shield 10, then make guard shield 12 pass through of the axial centre alignment side-lower rotation of the upset support zone 30 of its linkwork 20 with respect to entry needle 40, when external force make guard shield 12 turn to its elasticity fin 21 cross the upset critical localisation after, then guard shield 12 need not external force and just turns to open position voluntarily under the effect of the elastic force of elasticity fin 21, and finished the upset of guard shield 12, and keeping the angle of residence upset is 130 °, exposes needle tubing 41 and draws and liquid medicine injection by cone head hole 52 to make things convenient for syringe 50; After injection is finished, act on external force on the guard shield 12 of safety shield 10, guard shield 12 is rotated with respect to the axial centre alignment side top of entry needle 40 by the upset support zone 30 of its linkwork 20, when external force make guard shield 12 turn to its elasticity fin 21 cross the upset critical localisation after, then guard shield 12 need not external force and is returned to make position with regard to rotating voluntarily under the effect of the elastic force of elasticity fin 21, and remain closed, can prevent that needle tubing 41 accidents from hurting sb.'s feelings, reach the safety needle assembly and have property easy to use, safe effect preferably.
See Fig. 1 and Fig. 7, when why in the present embodiment the elastic force of elasticity fin 21 makes guard shield 12 turn to open position, the angle of the upset that is maintained is 130 °, is because the root of elasticity fin 21 is subjected to the restriction of outer wall of a side that is connected with elasticity fin 21 (being the left side of Fig. 1) of pedestal 11; In other embodiments, if the thickness of the outer wall of the side that is connected with elasticity fin 21 (being the left side of Fig. 1) by reducing pedestal 11 can make guard shield 12 be 178 ° to the maximum with respect to the flip angle of the longitudinal center line of entry needle 40.
Embodiment 2
See Fig. 9 to Figure 13, the linkwork 20 of the safety needle assembly of present embodiment is to be made of sheet spring 23 and two hinges 24, hinge 24 is arranged on the both sides of sheet spring 23, each hinge 24 is provided with upset portion 241 and fixed part 242, the epimere of the upset portion 241 of each hinge 24 and the top of sheet spring 23 are connected with guard shield 12, the fixed part 242 of each hinge 24 and the root of sheet spring 23 are connected with pedestal 11, and the root of the upset portion 241 of the root of sheet spring 23 and each hinge 24 constitutes upset support zone 30 jointly.
See Fig. 9 and Figure 13, the use of the safety needle assembly of present embodiment is substantially the same manner as Example 1, and the safety needle assembly is nested with on the conehead 51 that is fixed on syringe substantially the same manner as Example 1 50 by the inwall of the locating hole 111 of the pedestal 11 of safety shield 10; The guard shield 12 of safety shield 10 is the open position with respect to the position of linkwork 20 1 sides, before drawing medicinal liquid, the elastic force of the sheet spring 23 of linkwork 20 can make guard shield 12 remain on make position, with the needle tubing 41 of protection entry needle 40, and can prevent that needle tubing 41 accidents from hurting sb.'s feelings; When preparing to draw medicinal liquid, act on external force on the guard shield 12 of safety shield 10, then make guard shield 12 pass through of the axial centre alignment side-lower rotation of the upset support zone 30 of its linkwork 20 with respect to entry needle 40, when external force make guard shield 12 turn to its sheet spring 23 cross the upset critical localisation after, then guard shield 12 need not external force and just turns to open position voluntarily under the effect of the elastic force of sheet spring 23, and finished the upset of guard shield 12, and keeping the angle of residence upset is 130 °, exposes needle tubing 41 and draws and liquid medicine injection by cone head hole 52 to make things convenient for syringe 50; After injection is finished, act on external force on the guard shield 12 of safety shield 10, guard shield 12 is rotated with respect to the axial centre alignment side top of entry needle 40 by the upset support zone 30 of its linkwork 20, when external force make guard shield 12 turn to its sheet spring 23 cross the upset critical localisation after, then guard shield 12 need not external force and is returned to make position with regard to rotating voluntarily under the effect of the elastic force of sheet spring 23, and remain closed, can prevent that needle tubing 41 accidents from hurting sb.'s feelings, reach the safety needle assembly and have property easy to use, safe effect preferably.
See Fig. 9 and Figure 13, the contact plane when the upset portion 241 of hinge 24 contacts with fixed part 242 parallels with the longitudinal center line of entry needle 40; When why the elastic force of sheet spring 23 made guard shield 12 turn to open position, the angle of the upset that is maintained was 130 °, was because the root of sheet spring 23 is subjected to the restriction of outer wall of a side that is connected with sheet spring 23 (being the left side of Fig. 9) of pedestal 11; In other embodiments, if the thickness of the outer wall of the side that is connected with sheet spring 23 (being the left side of Fig. 9) by reducing pedestal 11 can make guard shield 12 be 178 ° to the maximum with respect to the flip angle of the longitudinal center line of entry needle 40; In other embodiments, if by a side (being the left side of Fig. 9) translation that sheet spring 23 and hinge 24 are connected with sheet spring 23 to pedestal 11, strengthen the lateral separation of linkwork 20, also can make guard shield 12 be 178 ° to the maximum with respect to the flip angle of the longitudinal center line of entry needle 40 with respect to the longitudinal center line of entry needle 40.All the other are identical with embodiment 1.
Embodiment 3
See Figure 14 to Figure 18, the linkwork 20 of the safety needle assembly of present embodiment is to be made of hinge 24 and two sheet springs 23, sheet spring 23 is arranged on the both sides of hinge 24, hinge 24 is provided with upset portion 241 and fixed part 242, the epimere of the upset portion 241 of hinge 24 and the top of each sheet spring 23 are connected with guard shield 12, the fixed part 242 of hinge 24 and the root of each sheet spring 23 are connected with pedestal 11, and the root of the upset portion 241 of hinge 24 and the root of each sheet spring 23 constitute upset support zone 30 jointly.
See Figure 14 figure, 15 and Figure 18, the contact plane when the upset portion 241 of hinge 24 contacts with fixed part 242 parallels with the longitudinal center line of entry needle 40; When why the elastic force of sheet spring 23 made guard shield 12 turn to open position, the angle of the upset that is maintained was 130 °, was because the root of sheet spring 23 is subjected to the restriction of outer wall of a side that is connected with sheet spring 23 (being the left side of Figure 14) of pedestal 11; In other embodiments, if the thickness of the outer wall of the side that is connected with sheet spring 23 (being the left side of Figure 14) by reducing pedestal 11 can make guard shield 12 be 178 ° to the maximum with respect to the flip angle of the longitudinal center line of entry needle 40; In other embodiments, if by a side (being the left side of Figure 14) translation that sheet spring 23 and hinge 24 are connected with sheet spring 23 to pedestal 11, strengthen the lateral separation of linkwork 20, also can make guard shield 12 be 178 ° to the maximum with respect to the flip angle of the longitudinal center line of entry needle 40 with respect to the longitudinal center line of entry needle 40.All the other are identical with embodiment 2.
Embodiment 4
See Figure 19 to Figure 20, the entry needle 40 of the safety needle assembly of present embodiment is a needle tubing 41, and needle tubing 41 is fixing with the pedestal 11 of safety shield 10; Guard shield 12 also has the spanner 121 (also spanner 121 can be arranged on the sidepiece of guard shield 12 in other embodiments) that is positioned at its upper end, in use, pulling spanner 121 can make the guard shield 12 of safety shield 10 overturn eaily, with the injury end user's of the accidental needle that further prevents needle tubing 41 finger, further reach and make the safety needle assembly have the effect of safety; See Figure 20, the cross section of the pedestal 11 of safety shield 10 be shaped as garden shape in the foreign side.All the other are identical with embodiment 2.
Embodiment 5
See Figure 21 to Figure 24, the locating hole 111 of the pedestal 11 of the safety shield 10 of the safety needle assembly of present embodiment is a through hole, entry needle 40 is to be made of needle tubing 41, connecting portion 42 and needle stand 43, needle tubing 41 is bonding and fixing with the inwall of needle stand 43 by connecting portion 42, the inwall of the locating hole 111 of pedestal 11 and the outer wall of needle stand 43 are fixed, and the inwall in the needle stand hole 431 of needle stand 43 can be fixed on the position on the conehead 51 of syringe 50 when being to use; See Figure 22, the band breach garden that the is shaped as annular of the cross section of the guard shield 12 of safety shield 10, its gap portions is as the open position; Guard shield 12 also has the spanner 121 that is positioned at its upper end.All the other are identical with embodiment 2.
Embodiment 6
See Figure 25, with respect to embodiment 2, behind the mutual alignment of the contact plane when the safety needle assembly of present embodiment contacts with fixed part 242 in the upset portion 241 that changes hinge 24 and the longitudinal center line of entry needle 40, can change the flip angle of the guard shield 12 of safety shield 10 with respect to the longitudinal center line of entry needle 40; Because the angle [alpha] of the mutual alignment of the contact plane when the upset portion 241 of the hinge 24 of present embodiment contacts with fixed part 242 and the longitudinal center line of entry needle 40 is 90 °, so the upset support zone 30 that the guard shield 12 of safety shield 10 can be by linkwork 20 overturns with respect to the longitudinal center line of entry needle 40, by pulling guard shield 12, then can be to the side-lower guard shield 12 that overturns, guard shield 12 is 90 ° with respect to the flip angle of the longitudinal center line of entry needle 40.All the other are identical with embodiment 2.
Embodiment 7
See Figure 26 to Figure 28, the syringe of present embodiment is a kind of safety injector, and the employed material of syringe meets national standard.Present embodiment syringe 50 has conehead 51, overcoat 53, core bar 54, piston 55 and as the needle tubing 41 of entry needle 40; Piston 55 is nested with the upper end at core bar 54; Needle tubing 41, conehead 51 and overcoat 53 are integral piece; It is characterized in that: syringe 50 also has safety shield 10, and safety shield 10 is the integral pieces that are made of pedestal 11, guard shield 12 and linkwork 20; The pedestal 11 of safety shield 10 is provided with positioning through hole 111, and the inwall of the positioning through hole 111 of the pedestal 11 of safety shield 10 matches with the outer wall of the conehead 51 of syringe 50; The linkwork 20 of safety shield 10 is arranged between pedestal 11 and the guard shield 12, and pedestal 11 is connected with guard shield 12 by linkwork 20; The position with respect to linkwork 20 1 sides of the guard shield 12 of safety shield 10 is the open position; Linkwork 20 has upset support zone 30, and the upset support zone 30 that the guard shield 12 of safety shield 10 can be by linkwork 20 overturns with respect to the longitudinal center line of needle tubing 41; The guard shield 12 of safety shield 10 is when make position turns to open position, and guard shield 12 is 130 ° with respect to the flip angle of the longitudinal center line of needle tubing 41; Conehead 51 has cone head hole 52.
See Figure 26 to Figure 28, all the other structures of the safety shield 10 of present embodiment and the safety shield 10 of embodiment 2 are basic identical; The basic configuration of the cross section at the position that the positioning through hole 111 of the pedestal 11 of safety shield 10 matches with the conehead 51 of syringe 50 is a cross; When safety shield 10 was assemblied on the conehead 51 of syringe 50, the inwall at the position of matching of the locating hole logical 111 of the pedestal 11 by safety shield 10 was nested with on the conehead 51 that is fixed on syringe shown in Figure 26 50.See Figure 26 and Figure 27, the safety shield 10 of present embodiment and use after the conehead 51 of this syringe 50 matches and the safety needle assembly among the embodiment 2 are basic identical with the use after the conehead 51 of syringe 50 matches; The guard shield 12 of safety shield 10 is the open position with respect to the position of linkwork 20 1 sides, before drawing medicinal liquid, the elastic force of the sheet spring 23 of linkwork 20 can make guard shield 12 remain on make position, with the needle tubing 41 of protection entry needle 40, and can prevent that needle tubing 41 accidents from hurting sb.'s feelings; When preparing to draw medicinal liquid, act on external force on the guard shield 12 of safety shield 10, then make guard shield 12 pass through of the axial centre alignment side-lower rotation of the upset support zone 30 of its linkwork 20 with respect to entry needle 40, when external force make guard shield 12 turn to its sheet spring 23 cross the upset critical localisation after, then guard shield 12 need not external force and just turns to open position voluntarily under the effect of the elastic force of sheet spring 23, and finished the upset of guard shield 12, and keeping the angle of residence upset is 130 °, exposes needle tubing 41 and draws and liquid medicine injection by cone head hole 52 to make things convenient for syringe 50; After injection is finished, act on external force on the guard shield 12 of safety shield 10, guard shield 12 is rotated with respect to the axial centre alignment side top of entry needle 40 by the upset support zone 30 of its linkwork 20, when external force make guard shield 12 turn to its sheet spring 23 cross the upset critical localisation after, then guard shield 12 need not external force and is returned to make position with regard to rotating voluntarily under the effect of the elastic force of sheet spring 23, and remain closed, can prevent that needle tubing 41 accidents from hurting sb.'s feelings.After using full sheath 10, the syringe of present embodiment is become have property easy to use, safe a kind of safety injector of characteristics preferably.All the other are identical with embodiment 2.
In other the embodiment of safety injector, the safety shield 10 of all the other structures of employed safety shield 10 and embodiment 1, embodiment 3 or embodiment 6 is basic identical, difference is that the pedestal 11 of employed safety shield 10 is equipped with positioning through hole 111, and the basic configuration of the cross section at the positioning through hole 111 of the pedestal 11 of safety shield 10 position of matching with the conehead 51 of syringe 50 is cross; In other the embodiment of safety injector, the basic configuration of the cross section at the position that the positioning through hole 111 of the pedestal 11 of employed safety shield 10 matches with the conehead 51 of syringe 50 also can be other shape.
Claims (10)
1, a kind of safety needle assembly is characterized in that: have safety shield (10) and entry needle (40); Safety shield (10) is the integral piece that is made of pedestal (11), guard shield (12) and linkwork (20): the pedestal (11) of safety shield (10) is provided with locating hole (1 11); The linkwork (20) of safety shield (10) is arranged between pedestal (11) and the guard shield (12), and pedestal (11) is connected with guard shield (12) by linkwork (20); The position with respect to linkwork (20) one sides of the guard shield (12) of safety shield (10) is the open position; Linkwork (20) has upset support zone (30), and the upset support zone (30) that the guard shield (12) of safety shield (10) can be by linkwork (20) overturns with respect to the longitudinal center line of entry needle (40).
2, a kind of safety needle assembly according to claim 1, it is characterized in that: linkwork (20) is the linkwork of bow tie, knot (22) is supported in elasticity fin (21) and upset with two bendings, the phase junction that knot (22) is arranged on two elasticity fins (21) is supported in upset, the top of each elasticity fin (21) is connected with guard shield (12), the root of each elasticity fin (21) is connected with pedestal (11), and the root of each elasticity fin (21) and upset are supported knot (22) and constituted upset support zone (30) jointly.
3, a kind of safety needle assembly according to claim 1, it is characterized in that: linkwork (20) is to be made of sheet spring (23) and two hinges (24), hinge (24) is arranged on the both sides of sheet spring (23), each hinge (24) is provided with upset portion (241) and fixed part (242), the epimere of the upset portion (241) of each hinge (24) and the top of sheet spring (23) are connected with guard shield (12), the fixed part (242) of each hinge (24) and the root of sheet spring (23) are connected with pedestal (11), and the root of the upset portion (241) of the root of sheet spring (23) and each hinge (24) constitutes upset support zone (30) jointly.
4, a kind of safety needle assembly according to claim 1, it is characterized in that: linkwork (20) is to be made of hinge (24) and two sheet springs (23), sheet spring (23) is arranged on the both sides of hinge (24), hinge (24) is provided with upset portion (241) and fixed part (242), the epimere of the upset portion (241) of hinge (24) and the top of each sheet spring (23) are connected with guard shield (12), the fixed part (242) of hinge (24) and the root of each sheet spring (23) are connected with pedestal (11), and the root of the upset portion (241) of hinge (24) and the root of each sheet spring (23) constitute upset support zone (30) jointly.
5, according to the described a kind of safety needle assembly of claim 1 to 4, it is characterized in that: the guard shield (12) of safety shield (10) is when make position turns to open position, and guard shield (12) is 60 ° to 178 ° with respect to the flip angle of the longitudinal center line of entry needle (40).
6, according to the described a kind of safety needle assembly of claim 1 to 4, it is characterized in that: entry needle (40) is to be made of needle tubing (41) and connecting portion (42), and needle tubing (41) is by connecting portion (42) and bonding being fixed on the pedestal (11) of inwall that is arranged on the connecting hole (112) on the pedestal (11).
7, according to the described a kind of safety needle assembly of claim 1 to 4, it is characterized in that: the inwall of the locating hole (111) of the pedestal (11) of safety shield (10) can be fixed on the position on the conehead (51) of syringe (50) when being to use.
8, according to the described a kind of safety needle assembly of claim 1 to 4, it is characterized in that: the locating hole (111) of the pedestal (11) of safety shield (10) is a through hole, entry needle (40) is to be made of needle tubing (41), connecting portion (42) and needle stand (43), needle tubing (41) is bonding and fixing with the inwall of needle stand (43) by connecting portion (42), the inwall of the locating hole (111) of pedestal (11) and the outer wall of needle stand (43) are fixed, and the inwall in the needle stand hole (431) of needle stand (43) can be fixed on the position on the conehead (51) of syringe (50) when being to use.
9, according to the described a kind of safety needle assembly of claim 1 to 4, it is characterized in that: entry needle (40) is a needle tubing (41), and needle tubing (41) is fixing with the pedestal (11) of safety shield (10).
10, a kind of safety injector has conehead (51), overcoat (53), core bar (54), piston (55) and as the needle tubing (41) of entry needle (40); Piston (55) is nested with the upper end in core bar (54); Needle tubing (41), conehead (51) and overcoat (53) are integral piece; It is characterized in that: syringe (50) also has safety shield (10), and safety shield (10) is the integral piece that is made of pedestal (11), guard shield (12) and linkwork (20); The pedestal (11) of safety shield (10) is provided with positioning through hole (111), and the inwall of the positioning through hole (111) of the pedestal (11) of safety shield (10) matches with the outer wall of the conehead (51) of syringe (50); The linkwork (20) of safety shield (10) is arranged between pedestal (11) and the guard shield (12), and pedestal (11) is connected with guard shield (12) by linkwork (20); The position with respect to linkwork (20) one sides of the guard shield (12) of safety shield (10) is the open position; Linkwork (20) has upset support zone (30), and the upset support zone (30) that the guard shield (12) of safety shield (10) can be by linkwork (20) overturns with respect to the longitudinal center line of needle tubing (41); The guard shield (12) of safety shield (10) is when make position turns to open position, and guard shield (12) is 60 ° to 178 ° with respect to the flip angle of the longitudinal center line of needle tubing (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101065378A CN1546185A (en) | 2003-12-05 | 2003-12-05 | Safety injection needle assembly and safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101065378A CN1546185A (en) | 2003-12-05 | 2003-12-05 | Safety injection needle assembly and safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1546185A true CN1546185A (en) | 2004-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101065378A Pending CN1546185A (en) | 2003-12-05 | 2003-12-05 | Safety injection needle assembly and safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1546185A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071207A (en) * | 2011-10-26 | 2013-05-01 | 无锡市宇寿医疗器械股份有限公司 | Syringe with stab preventer |
| CN104399157A (en) * | 2014-10-14 | 2015-03-11 | 汪贤宗 | General safety protective jacket |
| WO2016159719A1 (en) * | 2015-04-02 | 2016-10-06 | 고려대학교 산학협력단 | Syringe needle |
| WO2023088347A1 (en) * | 2021-11-19 | 2023-05-25 | 上海倍莱弗科技有限公司 | Split-type protective syringe device |
-
2003
- 2003-12-05 CN CNA2003101065378A patent/CN1546185A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071207A (en) * | 2011-10-26 | 2013-05-01 | 无锡市宇寿医疗器械股份有限公司 | Syringe with stab preventer |
| CN104399157A (en) * | 2014-10-14 | 2015-03-11 | 汪贤宗 | General safety protective jacket |
| WO2016159719A1 (en) * | 2015-04-02 | 2016-10-06 | 고려대학교 산학협력단 | Syringe needle |
| KR101749651B1 (en) * | 2015-04-02 | 2017-06-21 | 고려대학교 산학협력단 | Syringe needle for safe using |
| WO2023088347A1 (en) * | 2021-11-19 | 2023-05-25 | 上海倍莱弗科技有限公司 | Split-type protective syringe device |
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