CN1528474A - Closed self-ruined safety syringe - Google Patents
Closed self-ruined safety syringe Download PDFInfo
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- CN1528474A CN1528474A CNA2003101061061A CN200310106106A CN1528474A CN 1528474 A CN1528474 A CN 1528474A CN A2003101061061 A CNA2003101061061 A CN A2003101061061A CN 200310106106 A CN200310106106 A CN 200310106106A CN 1528474 A CN1528474 A CN 1528474A
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Abstract
The invention relates to a self-destroying injector, including awl head, core pole, shell and piston; the awl head has a hole, and the awl and the shell are integrative; the core pole is an integral whole with head, neck and body; the piston covers on the head of the core pole; it also has occlusion bolt set with occlusion part on the upper end and position part on the lower end, the piston has axial positioning through hole, the position part of the occlusion bolt is inserted in the above through hole, the occlusion bolt can cooperate with the awl head hole by the occlusion part to achieve the above purpose, wherein the external diameter in the their cooperating position is greater than the internal diameter of corresponding hole segment of the awl head hole.
Description
Technical field
The present invention relates to a kind of self-destructive syringe, belong to medical instruments field.
Background technology
China Patent No. is 00219356.6, and the utility model patent description that name is called " obstruction type disposable syringe " discloses a kind of syringe.This syringe comprises overcoat, core bar, piston; Overcoat has conehead, and conehead is provided with cone head hole, is provided with annular boss in the cone head hole; Piston nose is provided with plug, and the plug rear end has otch, and the plug center is provided with arbor; Piston is connected with plug, can be made into integration, and also can bondingly form; Plug has tapering, and front end is the microcephaly; The annular boss inwall is provided with at least one axial diversion groove; The core bar rear portion is provided with locating part.The technology difficulty that the plug of said syringe and piston are made into integration is bigger, and the rate that manufactures a finished product is lower, and is with high costs, in use because rubber has better elastic, thus the otch of plug rear end easy fracture not, the difficult effect that reaches obstruction; If bonding forming, plug are difficult to accurately to be positioned at the center of piston,,, can't normally use so just come off easily when not using because bond area is little.
Summary of the invention
The object of the present invention is to provide a kind of inaccessible injection passage after injection is finished and self-destruction, can't reusable a kind of inaccessible destructing safety type syringe.
Technical scheme of the present invention: this syringe comprises conehead, core bar, overcoat and piston; Conehead has cone head hole, and conehead and overcoat are integral piece; Core bar is the integral piece with head, cervical region and shaft; Piston is nested with on the head of core bar; This syringe also has inaccessible pin, inaccessible pin is provided with occlusive part that is positioned at the upper end and the location division that is positioned at the lower end, piston has the axial location through hole, the location division intercalation of inaccessible pin is airtight to be positioned in the axial location through hole of piston, in order to achieve the above object, inaccessible pin can match with cone head hole by occlusive part, and the external diameter that occlusive part and matching of cone head hole are located is greater than the internal diameter of the corresponding hole section of cone head hole.
The surperficial both sides of the occlusive part of above-mentioned inaccessible pin are provided with axial intake chute.
This syringe also has entry needle, and entry needle has needle tubing, connecting portion and needle stand, the needle stand of entry needle and conehead hot melt or be adhesively fixed.
The inwall of above-mentioned cone head hole is provided with the anti-portion of disclosing, and the anti-portion of disclosing is provided with delivery hole, and delivery hole is the part of cone head hole, and the sectional area of delivery hole is greater than the sectional area of needle tubing.
Above-mentioned core bar is a cross fin core bar, and the rear portion of a fin has locating part therein, to prevent faulty operation.
The present invention has positive result of use: be positioned at owing to the location division intercalation of inaccessible pin is airtight in the axial location through hole of piston, can draw normally and liquid medicine injection, in order to achieve the above object, inaccessible pin can match with cone head hole by occlusive part, and the external diameter that occlusive part and matching of cone head hole are located is greater than the internal diameter of the corresponding hole section of cone head hole; Surperficial both sides at the occlusive part of obturation pin are provided with axial intake chute, to reduce the residual flow amount of medicinal liquid; Inwall at cone head hole is provided with the anti-portion of disclosing, and the anti-portion of disclosing is provided with delivery hole, and delivery hole is the part of cone head hole, and the sectional area of delivery hole is injected to guarantee medicinal liquid continuously greater than the sectional area of needle tubing; Anti-setting of disclosing portion can prevent that after injection is finished inaccessible pin from being disclosed; After injection is finished, constitute current path by the space between the top flat upper surface of the bottom surface of the head of the inwall of the axial location through hole of piston, piston and core bar and the space between the cervical region, piston and shaft, destroy the negative pressure chamber in the overcoat inner chamber, therefore can't draw medicinal liquid, syringe reaches inaccessible injection passage and destroys negative pressure chamber in the overcoat inner chamber and the purpose of self-destruction, owing to can't be reused and has certain safety; Bonding or the hot melt of the needle stand of entry needle and conehead is fixed, and prevents that entry needle from reusing.The present invention is rational in infrastructure, and technology is simple, and dependable performance has practicality, is can't reusable a kind of inaccessible destructing safety type syringe.
Description of drawings
Fig. 1 is the configuration diagram of embodiment 1 (injection finish after);
Fig. 2 is the A-A profile of Fig. 1;
Fig. 3 is the obturation pin diagrammatic sketch of embodiment 1;
Fig. 4 is the piston diagrammatic sketch of embodiment 1;
Fig. 5 is the F-F profile of Fig. 1;
After finishing for embodiment 1 injects, Fig. 6 pulls back out the design sketch of core bar and piston.
Fig. 7 is the configuration diagram of embodiment 2 (injection finish after);
Fig. 8 is the B-B profile of Fig. 7;
Fig. 9 is the obturation pin diagrammatic sketch of embodiment 2;
Figure 10 is the piston diagrammatic sketch of embodiment 2.
Figure 11 is the configuration diagram of embodiment 3 (injection finish after);
Figure 12 is the E-E profile of Figure 11.
Figure 13 is the obturation pin diagrammatic sketch (ratio is 2: 1) of embodiment 3;
Figure 14 is the configuration diagram of top flat of head, cervical region and the shaft of the core bar of embodiment 3;
Figure 15 is that the G of Figure 14 is to view;
Figure 16 is the piston diagrammatic sketch of embodiment 3.
Figure 17 is the configuration diagram of embodiment 4 (injection finish after);
Figure 18 is the N-N profile of Figure 17;
Figure 19 is the C-C profile of Figure 17;
Figure 20 is the configuration diagram of top flat of head, cervical region and the shaft of the core bar of embodiment 4;
Figure 21 is that the D of Figure 20 is to view;
Figure 22 is the obturation pin diagrammatic sketch of embodiment 4;
Figure 23 is the conehead configuration diagram of embodiment 4.
Figure 24 pulls back out the design sketch of core bar and piston after finishing for the configuration diagram of embodiment 5 and injection.
Figure 25 pulls back out the design sketch of core bar and piston after finishing for the configuration diagram of embodiment 6 and injection;
Figure 26 is the obturation pin diagrammatic sketch of embodiment 6.
Figure 27 pulls back out the design sketch of core bar and piston after finishing for the configuration diagram of embodiment 7 and injection.
Figure 28 is the configuration diagram of embodiment 8 and the design sketch of safety shield;
Figure 29 is the Y-Y profile of Figure 28;
Figure 30 is that the X of Figure 28 is to view.
Figure 31 is the configuration diagram of embodiment 9;
Figure 32 is the Z-Z profile of Figure 31.
The specific embodiment
See Fig. 1 to Fig. 6, the employed material of the syringe of present embodiment meets national standard.The syringe of present embodiment has conehead 1, core bar 2, overcoat 3, piston 5, conehead 1 has cone head hole 1-1, conehead 1 is an integral piece with overcoat 3, and core bar 2 is for having the integral piece of head 2-1, cervical region 2-2 and shaft 2-3, and piston 5 is nested with on the head 2-1 of core bar 2; See Fig. 1 to Fig. 5, this syringe also has inaccessible pin 4, inaccessible pin 4 is provided with occlusive part 4-1 that is positioned at the upper end and the location division 4-2 that is positioned at the lower end, piston 5 has axial location through hole 5-1, the location division 4-2 intercalation of inaccessible pin 4 is airtight to be positioned among the axial location through hole 5-1 of piston 5, inaccessible pin 4 can match with cone head hole 1-1 by occlusive part 4-1, and the external diameter that occlusive part 4-1 and matching of cone head hole 1-1 are located is greater than the internal diameter 0.35mm of the corresponding hole section of cone head hole 1-1; Core bar 2 is pushed ahead piston 5 and inaccessible pin 4 liquid medicine injections, is provided with axial intake chute 4-1-1 in the both sides on the surface of the occlusive part 4-1 of obturation pin 4, and last medicinal liquid enters in the cone head hole 1-1 by axial intake chute 4-1-1, to reduce the residual flow amount of medicinal liquid; Inwall at cone head hole 1-1 is provided with the anti-1-2 of portion that discloses, and prevents that disclosing the 1-2 of portion is provided with delivery hole, and delivery hole is the part of cone head hole 1-1, and the sectional area of delivery hole is greater than the sectional area 0.5mm of needle tubing 7-1
2, inject continuously to guarantee medicinal liquid; Anti-setting of disclosing the 1-2 of portion can prevent that after injection is finished inaccessible pin 4 from being disclosed; See Fig. 6, when core bar 2 is advanced to the end, after injecting liquid drug is finished, the occlusive part 4-1 of inaccessible pin 4 enters in the cone head hole 1-1, because the external diameter that the matching of occlusive part 4-1 and cone head hole 1-1 located is greater than the internal diameter 0.35mm of the corresponding hole section of cone head hole 1-1, pressure is detained inaccessible pin 4 and inaccessible in cone head hole 1-1, twitching core bar 2 backward when wanting to draw medicinal liquid, axial location through hole 5-1 by piston 5, the head 2-1 of the inwall of piston 5 and core bar 2 and the space between the cervical region 2-2, space between the top flat 2-3-1 upper surface of the bottom surface of piston 5 and shaft 2-3 constitutes current path, destroy the negative pressure chamber in the overcoat inner chamber, therefore can't draw medicinal liquid, syringe reaches inaccessible injection passage and destroys negative pressure chamber in the overcoat inner chamber and the purpose of self-destruction, owing to can't be reused and has certain safety.
See Fig. 1, this syringe also has entry needle 7, and entry needle 7 has needle tubing 7-1, connecting portion 7-2 and needle stand 7-3, the needle stand 7-3 hot melt of entry needle 7 or be adhesively fixed on the conehead 1.
See Fig. 1, Fig. 5 and Fig. 6, the shaft 2-3 of core bar 2 is a cross fin shaft, the rear portion of a fin is provided with locating part 6 therein, the mistake that prevents to need to twitch core bar 2 in the process of assembling or injection preparation and cause core bar 2 to be shifted onto the end by mistake takes place, junction at fin and locating part 6 is provided with breach 2-3-2, be convenient to locating part 6 finish the injection preparation after or in injection process, locating part 6 is fractureed or opisthotonos.
See Fig. 7 to Figure 10, the obturation pin 4 of present embodiment syringe does not have axial intake chute 4-1-1, is provided with axial intake chute 1-3 in the inwall both sides of cone head hole 1-1; The syringe of present embodiment has the good effect of strengthening inaccessible injection passage: see Fig. 7 and Fig. 9, on the occlusive part 4-1 of obturation pin 4, be provided with airtight boss 4-3, cone head hole 1-1 is the notch cuttype hole, and the external diameter at the place that matches of the notch cuttype hole section of airtight boss 4-3 and cone head hole 1-1 is greater than the internal diameter 0.35mm of the corresponding notch cuttype hole section of cone head hole 1-1; See Fig. 7, after injection was finished, occlusive part 4-1 and airtight boss 4-3 cooperated with the corresponding notch cuttype hole section of cone head hole 1-1 and are airtight, reached to strengthen inaccessible injection passage and the purpose of self-destruction, owing to syringe can't be reused and has certain safety.All the other are identical with embodiment 1.
See Figure 11 to Figure 16, the needle tubing 7-1 of present embodiment syringe and conehead 1 and overcoat 3 part that is fixed as one; The inwall of cone head hole 1-1 does not have the anti-1-2 of portion that discloses; On the occlusive part 4-1 of obturation pin 4, be provided with axial intake chute 4-1-1 and airtight boss 4-3; Cone head hole 1-1 is the notch cuttype hole; The effect that the syringe of present embodiment destroys the negative pressure chamber in the overcoat inner chamber is remarkable: see Figure 11, Figure 12 and Figure 16, on the roof of piston 5 inwalls, Yao Bi, diapire, respectively be provided with air drain 5-2,5-3,5-4, each air drain formation air channel that is connected, this air channel formation current path that is connected with the axial location through hole 5-1 of piston 5; See Figure 11, Figure 12, Figure 14 and Figure 15, on the head 2-1 of core bar 2 and cervical region 2-2, be provided with an axial air channel 2-1-1 until cervical region 2-2 root, on the top flat 2-3-1 of shaft 2-3, be provided with horizontal communication ditch 2-3-3, axially the air channel 2-1-1 formation current path that is connected with horizontal communication ditch 2-3-3; (referring to Figure 24) is advanced to the end when core bar 2, after injection is finished, inaccessible pin 4 quilts are inaccessible in cone head hole 1-1, if the occlusive part 4-1 of inaccessible pin 4 and airtight boss 4-3 and cone head hole 1-1 are combined with the space, twitching core bar 2 backward when wanting to draw medicinal liquid, by the axial location through hole 5-1 that is arranged on the piston 5, air drain 5-2,5-3, the current path that 5-4 is connected and forms, be arranged on the current path that axial air channel 2-1-1 on the core bar 2 and horizontal communication ditch 2-3-3 are connected and form, space between the top flat 2-3-1 upper surface of the bottom surface of piston 5 and shaft 2-3 constitutes similar total current path 8, destroy the negative pressure chamber in the overcoat inner chamber significantly, therefore can't draw medicinal liquid, syringe reaches inaccessible injection passage and destroys negative pressure chamber in the overcoat inner chamber significantly and the purpose of self-destruction, owing to can't be reused and has certain safety.All the other are identical with embodiment 1.
See Figure 17 to Figure 23, the needle tubing 7-1 of present embodiment syringe is by connecting portion 7-2 and bonding being fixed on the conehead 1 of inwall that is arranged on the connecting hole 1-4 on the conehead 1; The inwall of cone head hole 1-1 does not have the anti-1-2 of portion that discloses; Be provided with airtight boss 4-3 on the occlusive part 4-1 of obturation pin 4, inaccessible pin 4 does not have axial intake chute 4-1-1; Cone head hole 1-1 is the notch cuttype hole; The structure of piston 5 is identical with embodiment 3; See Figure 17, Figure 19 and Figure 22, be provided with elastic groove 4-4 on obturation pin 4, last medicinal liquid enters in the cone head hole 1-1 by elastic groove 4-4, to reduce the residual flow amount of medicinal liquid; After injection was finished, elastic groove 4-4 was subjected to the extruding of cone head hole 1-1 inwall and is out of shape, and forced to make inaccessible pin 4 quilts inaccessible in cone head hole 1-1; The effect that the syringe of present embodiment destroys the negative pressure chamber in the overcoat inner chamber is remarkable: see Figure 17, Figure 20 and Figure 21, on core bar 2, be provided with one and run through head 2-1, the vertical core 2-4 of the top flat 2-3-1 of cervical region 2-2 and shaft 2-3, after injection is finished, inaccessible pin 4 quilts are inaccessible in cone head hole 1-1, twitching core bar 2 backward when wanting to draw medicinal liquid, by vertical core 2-4 and the axial location through hole 5-1 that is arranged on the piston 5, air drain 5-2,5-3, the 5-4 current path that the air channel that forms constitutes that is connected, destroy the negative pressure chamber in the overcoat inner chamber significantly, therefore can't draw medicinal liquid, syringe reaches inaccessible injection passage and destroys negative pressure chamber in the overcoat inner chamber significantly and the purpose of self-destruction, owing to can't be reused and has certain safety.All the other are identical with embodiment 1.
See Figure 24, the occlusive part 4-1 of the obturation pin 4 of present embodiment syringe is provided with axial intake chute 4-1-1 and airtight boss 4-3; Cone head hole 1-1 is the notch cuttype hole; The anti-delivery hole of disclosing on the 1-2 of portion is set for the eccentric; The structure of core bar 2 and piston 5 is identical with embodiment 3; The effect that the syringe of present embodiment destroys the negative pressure chamber in the overcoat inner chamber is remarkable: after injection is finished, inaccessible pin 4 quilts are inaccessible in cone head hole 1-1, twitching core bar 2 backward when wanting to draw medicinal liquid, by the axial location through hole 5-1 that is arranged on the piston 5, air drain 5-2,5-3, the current path that 5-4 is connected and forms, be arranged on the current path that axial air channel 2-1-1 on the core bar 2 and horizontal communication ditch 2-3-3 are connected and form, space between the top flat 2-3-1 upper surface of the bottom surface of piston 5 and shaft 2-3 constitutes total current path 8, destroy the negative pressure chamber in the overcoat inner chamber significantly, therefore can't draw medicinal liquid, syringe reaches inaccessible injection passage and destroys negative pressure chamber in the overcoat inner chamber significantly and the purpose of self-destruction, owing to can't be reused and has certain safety.All the other are identical with embodiment 1.
See Figure 25 to Figure 26, the obturation pin 4 of the syringe of present embodiment be by inaccessible shank be connected locating rod and fix and constitute, inaccessible shank is as the occlusive part 4-1 of obturation pin 4, the upper end that connects locating rod is fixed among the inaccessible shank, connects locating rod and stretches out lower end outside the inaccessible shank as the location division 4-2 of obturation pin 4; On the occlusive part 4-1 of obturation pin 4, be provided with axial intake chute 4-1-1 and airtight boss 4-3; Cone head hole 1-1 is the notch cuttype hole.All the other are identical with embodiment 1.
See Figure 27, the structure of the obturation pin 4 of the syringe of present embodiment is identical with embodiment 6.All the other are identical with embodiment 5.
See Figure 28 to Figure 30, the syringe of present embodiment is the inaccessible destructing safety type syringe with enhanced safety, and employed material meets national standard.The syringe of present embodiment also has safety shield 9, and safety shield 9 is the integral pieces that are made of pedestal 9-1, guard shield 9-2, sheet spring 9-3, hinge 9-4 and spanner 9-5; See Figure 29, the side of guard shield 9-2 is open, and before syringe used, the elastic force of sheet spring 9-3 can make guard shield 9-2 remain on make position, with the needle tubing 7-1 of protection entry needle 7; See Figure 30, sheet spring 9-3 is arranged on open lateral another side with respect to guard shield 9-2 of safety shield 9, and hinge 9-4 is arranged on all the other both sides of safety shield 9, and pedestal 9-1 is connected with guard shield 9-2 by sheet spring 9-3 and hinge 9-4; See Figure 28, pulling spanner 9-5 with the junction of hinge 9-4 and pedestal 9-1 as overturning pivot can be to the side-lower guard shield 9-2 that overturns; After changing sheet spring 9-3 and hinge 9-4 and being positioned at mutual alignment on the safety shield 9, can change the flip angle of guard shield 9-2 with respect to the longitudinal center line of needle tubing 7-1, the change scope of flip angle is between 60 ° to 180 °; See Figure 28, the inwall of the pedestal 9-1 of safety shield 9 matches with the outer wall of the needle stand 7-3 of entry needle 7, safety shield 9 is nested with by pedestal 9-1 and is fixed on needle stand 7-3 and goes up (pedestal 9-1 also can be with needle stand 7-3 bonding or hot melt fix), comes off to prevent safety shield 9; The syringe of present embodiment has the good effect of enhanced safety: see Figure 28, before drawing medicinal liquid, the elastic force of sheet spring 9-3 can make guard shield 9-2 remain on make position; When drawing medicinal liquid, can pull spanner 9-5 with the junction of hinge 9-4 and pedestal 9-1 as overturning pivot to side-lower upset guard shield 9-2, after the axial centre of guard shield 9-2 is rotated the center of the overturning pivot of crossing hinge 9-4, the elastic force of sheet spring 9-3 makes guard shield 9-2 turn to respect to 125 ° of the longitudinal center lines of needle tubing 7-1 automatically and remains on 125 °, exposes needle tubing 7-1 and draws and liquid medicine injection with convenient; After injection is finished, can pull spanner 9-5 with the junction of hinge 9-4 and pedestal 9-1 as overturning pivot to side top upset guard shield 9-2, after the axial centre of guard shield 9-2 is rotated the center of the overturning pivot of crossing hinge 9-4, the elastic force of sheet spring 9-3 makes guard shield 9-2 upset be returned to make position automatically and remains closed, can prevent that needle tubing 7-1 accident from hurting sb.'s feelings, reach the effect of the safety of strengthening syringe.Because all the other structures of present embodiment syringe are identical with embodiment 5, can reach inaccessible injection passage and destroy negative pressure chamber in the overcoat inner chamber significantly and the purpose of self-destruction, can't reuse and have certain safety owing to syringe, the safety of the syringe of present embodiment has then been strengthened in the use of safety shield 9.The syringe of present embodiment is the inaccessible destructing safety type syringe with enhanced safety.
Embodiment 9
See Figure 31 to Figure 32, the syringe of present embodiment is the inaccessible destructing safety type syringe with enhanced safety.The inwall of the pedestal 9-1 of the safety shield 9 of present embodiment syringe matches with the outer wall of conehead 1, safety shield 9 is nested with on the outer wall that is fixed on conehead 1 (pedestal 9-1 also can be with conehead 1 bonding or hot melt fix) by pedestal 9-1, come off to prevent safety shield 9; All the other of safety shield 9 are identical with embodiment 8.The safety of the syringe of present embodiment has then been strengthened in the use of safety shield 9.All the other of present embodiment syringe are identical with embodiment 3.
Claims (10)
1, a kind of inaccessible destructing safety type syringe comprises conehead (1), core bar (2), overcoat (3) and piston (5); Conehead (1) has cone head hole (1-1), and conehead (1) is an integral piece with overcoat (3); Core bar (2) is for having the integral piece of head (2-1), cervical region (2-2) and shaft (2-3); Piston (5) is nested with on the head (2-1) of core bar (2); It is characterized in that: this syringe also has inaccessible pin (4), inaccessible pin (4) is provided with occlusive part (4-1) that is positioned at the upper end and the location division (4-2) that is positioned at the lower end, piston (5) has axial location through hole (5-1), location division (4-2) intercalation of inaccessible pin (4) is airtight to be positioned in the axial location through hole (5-1) of piston (5), inaccessible pin (4) can match with cone head hole (1-1) by occlusive part (4-1), and the external diameter that occlusive part (4-1) and matching of cone head hole (1-1) are located is greater than the internal diameter 0.05mm to 0.95mm of the corresponding hole section of cone head hole (1-1).
2, a kind of inaccessible destructing safety type syringe according to claim 1 is characterized in that: the surperficial both sides at the occlusive part (4-1) of obturation pin (4) are provided with axial intake chute (4-1-1) or are provided with axial intake chute (1-3) in the both sides of cone head hole (1-1) inwall.
3, a kind of inaccessible destructing safety type syringe according to claim 1, it is characterized in that: on the occlusive part (4-1) of obturation pin (4), be provided with airtight boss (4-3), cone head hole (1-1) is the notch cuttype hole, and the external diameter at the place that matches of the notch cuttype hole section of airtight boss (4-3) and cone head hole (1-1) is greater than the internal diameter 0.05mm to 0.95mm of the corresponding notch cuttype hole section of cone head hole (1-1).
4, a kind of inaccessible destructing safety type syringe according to claim 1 is characterized in that: be provided with elastic groove (4-4) on the occlusive part (4-1) of obturation pin (4).
5, a kind of inaccessible destructing safety type syringe according to claim 1, it is characterized in that: inaccessible pin (4) be by inaccessible shank be connected locating rod and fix and constitute, inaccessible shank is as the occlusive part (4-1) of obturation pin (4), the upper end that connects locating rod is fixed among the inaccessible shank, connects locating rod and stretches out lower end outside the inaccessible shank as the location division (4-2) of obturation pin (4).
6, a kind of inaccessible destructing safety type syringe according to claim 1, it is characterized in that: on the roof of piston (5) inwall, Yao Bi, diapire, respectively be provided with air drain (5-2), (5-3), (5-4), each air drain formation air channel that is connected, this air channel formation current path that is connected with the axial location through hole (5-1) of piston (5).
7, a kind of inaccessible destructing safety type syringe according to claim 1, it is characterized in that: on the head (2-1) of core bar (2) and cervical region (2-2), be provided with an axial air channel (2-1-1) until cervical region (2-2) root, on the top flat (2-3-1) of shaft (2-3), be provided with horizontal communication ditch (2-3-3), axially air channel (2-1-1) the formation current path that is connected with horizontal communication ditch (2-3-3).
8, a kind of inaccessible destructing safety type syringe according to claim 1 is characterized in that: be provided with a vertical core (2-4) that runs through the top flat (2-3-1) of head (2-1), cervical region (2-2) and shaft (2-3) on core bar (2).
9, a kind of inaccessible destructing safety type syringe according to claim 1, it is characterized in that: this syringe also has entry needle (7), entry needle (7) has needle tubing (7-1), connecting portion (7-2) and needle stand (7-3), the needle stand (7-3) of entry needle (7) and conehead (1) hot melt or be adhesively fixed.
10, a kind of inaccessible destructing safety type syringe according to claim 1, it is characterized in that: the inwall at cone head hole (1-1) is provided with the anti-portion (1-2) of disclosing, prevent that disclosing portion (1-2) is provided with delivery hole, delivery hole is the part of cone head hole (1-1), and the sectional area of delivery hole is greater than the sectional area 0.01mm of needle tubing (7-1)
2To 1.5mm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101061061A CN1528474A (en) | 2003-10-16 | 2003-10-16 | Closed self-ruined safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101061061A CN1528474A (en) | 2003-10-16 | 2003-10-16 | Closed self-ruined safety syringe |
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| Publication Number | Publication Date |
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| CN1528474A true CN1528474A (en) | 2004-09-15 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2003101061061A Pending CN1528474A (en) | 2003-10-16 | 2003-10-16 | Closed self-ruined safety syringe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301554A (en) * | 2013-06-13 | 2013-09-18 | 盐城金沃医疗科技有限公司 | Thermal expansion process for connecting disposable biomedical stainless steel needle tubing and plastic needle seat |
-
2003
- 2003-10-16 CN CNA2003101061061A patent/CN1528474A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301554A (en) * | 2013-06-13 | 2013-09-18 | 盐城金沃医疗科技有限公司 | Thermal expansion process for connecting disposable biomedical stainless steel needle tubing and plastic needle seat |
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