CN2659472Y - Clogging-locking self-destorying safety syringe - Google Patents
Clogging-locking self-destorying safety syringe Download PDFInfo
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- CN2659472Y CN2659472Y CN 200320110786 CN200320110786U CN2659472Y CN 2659472 Y CN2659472 Y CN 2659472Y CN 200320110786 CN200320110786 CN 200320110786 CN 200320110786 U CN200320110786 U CN 200320110786U CN 2659472 Y CN2659472 Y CN 2659472Y
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Abstract
The utility model relates to a self-destruction type injector, comprising a conical head, a core rod, an outer sleeve, and a piston; the conical head is provided with a conical head hole, the conical head and the outer sleeve are an integrated piece; the core rod is an integrated piece provided with a head, a neck, and a rod body; the piston is sleeved on the core rod head; the injector is provided with a tap-lock head, the tap-lock head is provided with an enclosed positioning part, the piston is provided with a conjunction positioning part, the enclosed positioning part of the tap-lock head and the conjunction positioning part of the piston are mutually inserted to be enclosed and conjugated and positioned, in order to achieve the purpose, the inner upper end of the outer sleeve is provided with a tap-lock cavity, the internal diameter of the tap-lock cavity is less than the internal diameter of the inner cavity of the outer sleeve, the tap-lock head can be cooperated with the tap-lock cavity, the external diameter of the place where the tap-lock head is cooperated with the tap-lock cavity is bigger than the internal diameter of the tap-lock cavity; the tap-lock head is provided with one or two elastic grooves. The utility model is characterized in that the structure is reasonable, the making is convenient, the process is simple, and the function is reliable, thereby being a tap-lock self-destruction safety type injector which can not be used repeatedly.
Description
Technical field
This utility model relates to a kind of self-destructive syringe, belongs 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.
The utility model content
The purpose of this utility model is to provide a kind of and stops up after injection is finished and locking injection passage and self-destruction, can't reusable a kind of plug lock destructing safety type syringe.
The technical solution of the utility model: 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 the plug tapered end, the plug tapered end is provided with airtight location division, piston is provided with in conjunction with the location division, the combining to peg graft mutually in the location division of airtight location division and the piston of plug tapered end and airtight in conjunction with locating, in order to achieve the above object, be provided with plug lock chamber in the upper end of the inside of overcoat, the internal diameter in plug lock chamber is less than the internal diameter of the inner chamber of overcoat, the plug tapered end can match with plug lock chamber, fills in tapered end and locks the internal diameter in chamber greater than plug with the external diameter at the place that matches in plug lock chamber.
Above-mentioned plug tapered end is provided with one or two elastic groove.
The airtight location division of above-mentioned plug tapered end is a convex column, piston be the matrix through hole in conjunction with the location division.
The airtight location division of above-mentioned plug tapered end is a concave hole, piston be convex column in conjunction with the location division.
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 utlity model has positive result of use: because the combining to peg graft mutually in the location division of airtight location division and the piston of plug tapered end and airtight in conjunction with locating, the airtight location division of plug tapered end is a convex column, piston be the matrix through hole in conjunction with the location division, can draw normally and liquid medicine injection, in order to achieve the above object, be provided with plug lock chamber in the upper end of the inside of overcoat, the internal diameter in plug lock chamber is less than the internal diameter of the inner chamber of overcoat, the plug tapered end can match with plug lock chamber, fills in tapered end and locks the internal diameter in chamber greater than plug with the external diameter at the place that matches in plug lock chamber; The plug tapered end is provided with one or two elastic groove, and elastic groove is subjected to filling in the inwall extruding in lock chamber and is out of shape, and forces to make the plug tapered end to be filled in by delay and is locked in plug lock intracavity; Last medicinal liquid can enter cone head hole by elastic groove, to reduce the residual quantity 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 the detent plug tapered end is disclosed; After injection is finished, constitute current path by the space between the upper surface of the top flat of the bottom surface of the head of the inwall of the matrix 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 plug lock 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.This utility model is rational in infrastructure, and technology is simple, and dependable performance has practicality, is can't reusable a kind of plug lock 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 plug tapered end diagrammatic sketch of embodiment 1;
Fig. 4 is the piston diagrammatic sketch of embodiment 1;
Fig. 5 is the B-B 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 plug tapered end diagrammatic sketch of embodiment 2;
Fig. 9 is the piston diagrammatic sketch of embodiment 2.
Figure 10 pulls back out the design sketch of core bar and piston after finishing for the configuration diagram of embodiment 3 and injection;
Figure 11 is the conehead configuration diagram of embodiment 3;
Figure 12 is the plug tapered end diagrammatic sketch of embodiment 3.
Figure 13 pulls back out the design sketch of core bar and piston after finishing for the configuration diagram of embodiment 4 and injection;
Figure 14 is the plug tapered end diagrammatic sketch of embodiment 4.
Figure 15 is the configuration diagram of embodiment 5 (injection finish after);
Figure 16 is the D-D profile of Figure 15;
Figure 17 is the piston diagrammatic sketch of embodiment 5;
Figure 18 is the configuration diagram of top flat of head, cervical region and the shaft of the core bar of embodiment 5;
Figure 19 is that the E of Figure 18 is to view;
After finishing for embodiment 5 injects, Figure 20 pulls back out the design sketch of core bar and piston.
Figure 21 pulls back out the design sketch of core bar and piston after finishing for the configuration diagram of embodiment 6 and injection;
Figure 22 is the plug tapered end diagrammatic sketch of embodiment 6;
Figure 23 is the piston diagrammatic sketch of embodiment 6.
Figure 24 is the configuration diagram of embodiment 7 (injection finish after);
Figure 25 is the F-F profile of Figure 24;
Figure 26 is the configuration diagram of top flat of head, cervical region and the shaft of the core bar of embodiment 7;
Figure 27 is that the G of Figure 26 is to view.
Figure 28 is the configuration diagram of embodiment 8 (injection finish after);
Figure 29 is the plug tapered end diagrammatic sketch of embodiment 8;
Figure 30 is the piston diagrammatic sketch of embodiment 8.
Figure 31 is the design sketch that pulls back out core bar and piston after embodiment 9 configuration diagram and injection are finished;
Figure 32 is the plug tapered end diagrammatic sketch of embodiment 9;
Figure 33 is the H-H profile of Figure 31;
Figure 34 is the piston diagrammatic sketch of embodiment 9;
Figure 35 is the configuration diagram of top flat of head, cervical region and the shaft of the core bar of embodiment 9;
Figure 36 is that the K of Figure 35 is to view;
Figure 37 pulls back out the design sketch of core bar and piston after finishing for the configuration diagram of embodiment 10 and injection;
Figure 38 is the plug tapered end diagrammatic sketch of embodiment 10;
Figure 39 is the connection locating rod diagrammatic sketch of embodiment 10.
Figure 40 is the configuration diagram of embodiment 11 and the design sketch of safety shield;
Figure 41 is the M-M profile of Figure 40;
Figure 42 is that the P of Figure 40 is to view.
Figure 43 is the configuration diagram of embodiment 12;
Figure 44 is the S-S profile of Figure 43.
The specific embodiment
See Fig. 1 to Fig. 6, the employed material of the syringe of present embodiment meets national standard.The specification that the present embodiment syringe is suitable for is below 10 milliliters and 10 milliliters.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. 6, this syringe also has plug tapered end 4, plug tapered end 4 is provided with airtight location division 4-1, piston 5 is provided with in conjunction with location division 5-1, the combining that location division 5-1 pegs graft mutually of airtight location division 4-1 and the piston 5 of plug tapered end 4 and airtight in conjunction with locating, the plug tapered end 4 airtight location division 4-1 be convex column, piston 5 be the matrix through hole in conjunction with location division 5-1, can draw normally and liquid medicine injection; Be provided with plug lock chamber 6 in the upper end of the inside of overcoat 3, the internal diameter in plug lock chamber 6 is less than the internal diameter 0.95mm of the inner chamber of overcoat 3; Plug tapered end 4 can match with plug lock chamber 6, fills in tapered end 4 and locks the internal diameter 0.65mm in chamber 6 greater than plug with the external diameter at the place that matches in plug lock chamber 6; Plug tapered end 4 is provided with an elastic groove 4-2, and core bar 2 is pushed ahead piston 5 and plug tapered end 4 liquid medicine injections, and last medicinal liquid can enter cone head hole 1-1 by elastic groove 4-2, to reduce the residual quantity 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 detent plug tapered end 4 is disclosed; See Fig. 6, when core bar 2 is advanced to the end, after injecting liquid drug was finished, plug tapered end 4 entered in the plug lock chamber 6, because plug tapered end 4 is locked the internal diameter 0.65mm in chamber 6 with the external diameter at the place that matches in plug lock chamber 6 greater than plug; The elastic groove 4-2 of plug tapered end 4 is subjected to filling in the inwall extruding in lock chamber 6 and is out of shape, pressure is detained plug tapered end 4 and is filled in to be locked in and fill in the lock chamber 6, twitching core bar 2 backward when wanting to draw medicinal liquid, matrix 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 upper surface of the top flat 2-3-1 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 plug lock 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 2-4 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 2-4 is provided with breach 2-3-2, be convenient to locating part 2-4 finish the injection preparation after or in injection process, locating part 2-4 is fractureed or opisthotonos.
See Fig. 7 to Fig. 9, the specification that the present embodiment syringe is suitable for is more than 5 milliliters and 5 milliliters.The overcoat 3 of present embodiment syringe is up-small and down-big notch cuttype overcoat, and the ladder section of the upper end of the inside of notch cuttype overcoat 3 is as plug lock chamber 6; The internal diameter in the plug lock chamber 6 of present embodiment syringe is less than the internal diameter 8.5mm of the inner chamber of overcoat 3; Plug tapered end 4 can match with plug lock chamber 6, fills in tapered end 4 and locks the internal diameter 0.55mm in chamber 6 greater than plug with the external diameter at the place that matches in plug lock chamber 6.All the other are identical with embodiment 1.
See Figure 10 to Figure 12, the specification that the present embodiment syringe is suitable for is below 10 milliliters and 10 milliliters.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 1-3 on the conehead 1; The inwall of cone head hole 1-1 does not have the anti-1-2 of portion that discloses; See Figure 10, the inwall of the epimere in plug lock chamber 6 has up-small and down-big tapering, the epimere of plug tapered end 4 has corresponding up-small and down-big tapering, the inwall of locking the hypomere in chamber 6 at plug is provided with plug lock boss 6-1, fill in the internal diameter of lock boss 6-1 and lock the boss 6-1 internal diameter 0.45mm of junction mutually less than the epimere in plug lock chamber 6 with plug, the external diameter of the hypomere of plug tapered end 4 is greater than the internal diameter 0.45mm of plug lock boss 6-1; See Figure 12, the elastic groove 4-2 of plug tapered end 4 is two; All the other of plug tapered end 4 and plug lock chamber 6 are identical with embodiment 1; See Figure 10, lock the boss 6-1 mutually internal diameter 0.45mm of junction less than the epimere in plug lock chamber 6 with plug owing to fill in the internal diameter of lock boss 6-1, the external diameter of the hypomere of plug tapered end 4 is greater than the internal diameter 0.45mm of plug lock boss 6-1, after injection is finished, plug tapered end 4 compulsory plugs are locked in the plug lock chamber 6, syringe reaches plug lock 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.All the other are identical with embodiment 1.
See Figure 13 to Figure 14, the specification that the present embodiment syringe is suitable for is more than 5 milliliters and 5 milliliters.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; See Figure 13 and Figure 14, the inwall of the epimere in plug lock chamber 6 has up-small and down-big tapering, the epimere of plug tapered end 4 has corresponding up-small and down-big tapering, the inwall of locking the hypomere in chamber 6 at plug is provided with plug lock boss 6-1, fill in the internal diameter of lock boss 6-1 and lock the boss 6-1 internal diameter 0.4mm of junction mutually less than the epimere in plug lock chamber 6 with plug, the external diameter of the hypomere of plug tapered end 4 is greater than the internal diameter 0.4mm of plug lock boss 6-1; See Figure 14, the elastic groove 4-2 of plug tapered end 4 is one, and all the other of plug tapered end 4 are identical with embodiment 3; See Figure 13, after injection was finished, plug tapered end 4 compulsory plugs were locked in the plug lock chamber 6, reached plug lock injection passage and destroyed negative pressure chamber in the overcoat inner chamber and the purpose of self-destruction, owing to syringe can't be reused and has certain safety.All the other are identical with embodiment 2.
See Figure 15 to Figure 20, the specification that the present embodiment syringe is suitable for is below 10 milliliters and 10 milliliters.The anti-delivery hole of disclosing on the 1-2 of portion of present embodiment syringe is set for the eccentric; The elastic groove 4-2 of plug tapered end 4 is one, and all the other of plug tapered end 4 are identical with embodiment 3; The structure of plug lock chamber 6 and plug lock boss 6-1 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: see Figure 15, Figure 16 and Figure 17, 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, the conduct of this air channel and piston 5 is in conjunction with the matrix through hole of the location division 5-1 formation current path that is connected; See Figure 15, Figure 16, Figure 18 and Figure 19, 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; See Figure 20, after injection is finished, plug tapered end 4 is locked in the plug lock chamber 6 by plug, if fill in the space that is combined with of tapered end 4 and cone head hole 1-1, twitching core bar 2 backward when wanting to draw medicinal liquid, matrix through hole 5-1 by 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 upper surface of the top flat 2-3-1 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 plug lock 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 21 to Figure 23, the specification that the present embodiment syringe is suitable for is more than 5 milliliters and 5 milliliters.The anti-delivery hole of disclosing on the 1-2 of portion of present embodiment syringe is set for the eccentric; The elastic groove 4-2 of plug tapered end 4 is two, and all the other of plug tapered end 4 are identical with embodiment 4; The structure of plug lock chamber 6 and plug lock boss 6-1 is identical with embodiment 4; See Figure 21, the structure of core bar 2 and piston 5 is identical with embodiment 5; The effect that the syringe of present embodiment destroys the negative pressure chamber in the overcoat inner chamber is identical with embodiment 5.All the other are identical with embodiment 2.
See Figure 24 to Figure 27, the specification that the present embodiment syringe is suitable for is more than 5 milliliters and 5 milliliters.The structure of the needle tubing 7-1 of present embodiment syringe, connecting portion 7-2 and conehead 1 is identical with embodiment 3; The inwall of cone head hole 1-1 does not have the anti-1-2 of portion that discloses; The structure in plug tapered end 4, plug lock chamber 6 is identical with embodiment 2; The structure of piston 5 is identical with embodiment 6; The effect that the syringe of present embodiment destroys the negative pressure chamber in the overcoat inner chamber is remarkable: see Figure 24, Figure 26 and Figure 27, on core bar 2, be provided with one and run through head 2-1, the vertical core 2-5 of the top flat 2-3-1 of cervical region 2-2 and shaft 2-3, after injection is finished, plug tapered end 4 is locked in the plug lock chamber 6 by plug, twitching core bar 2 backward when wanting to draw medicinal liquid, by vertical core 2-5 and the matrix 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 plug lock 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 2.
See Figure 28 to Figure 30, the specification that the present embodiment syringe is suitable for is below 10 milliliters and 10 milliliters.The anti-delivery hole of disclosing on the 1-2 of portion of present embodiment syringe is set for the eccentric; The plug tapered end 4 airtight location division 4-1 be concave hole, piston 5 be convex column in conjunction with location division 5-1; The concave hole of the airtight location division 4-1 of conduct of plug tapered end 4 combines the convex column of location division 5-1 and pegs graft mutually and airtight combination location with the conduct of piston 5; See Figure 30, be provided with axially extending bore 5-1-1 at the top of piston 5 and on as convex column in conjunction with location division 5-1; See Figure 28, when core bar 2 is advanced to the end, after injecting liquid drug is finished, plug tapered end 4 enters in the plug lock chamber 6, because plug tapered end 4 and the internal diameter 0.65mm of the external diameter of filling in the place that matches of locking chamber 6 greater than plug lock chamber 6, pressure makes plug tapered end 4 be locked in the plug lock chamber 6 by plug, twitching core bar 2 backward when wanting to draw medicinal liquid, axially extending bore 5-1-1 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 upper surface of the top flat 2-3-1 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 plug lock 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.All the other are identical with embodiment 1.
See Figure 31 to Figure 36, the specification that the present embodiment syringe is suitable for is more than 5 milliliters and 5 milliliters.The structure of the needle tubing 7-1 of present embodiment syringe, conehead 1, plug lock chamber 6, plug lock boss 6-1 and overcoat 3 is identical with embodiment 4; The inwall of cone head hole 1-1 does not have the anti-1-2 of portion that discloses; The airtight location division 4-1 of plug tapered end 4 is a convex column, is provided with shrinkage pool 4-1-1 on plug tapered end 4 and the convex column 4-1 as airtight location division 4-1; All the other of plug tapered end 4 are identical with embodiment 4; See Figure 34, piston 5 be ladder matrix through hole in conjunction with location division 5-1, all the other of piston 5 are identical with embodiment 6; See Figure 31, Figure 35 and Figure 36, on the head 2-1 of core bar 2, be provided with nose bar 2-6, nose bar 2-6 passes the ladder matrix through hole 5-1 of piston 5, the shrinkage pool 4-1-1 of the convex column of the airtight location division 4-1 of conduct of plug tapered end 4 and plug tapered end 4 combines the ladder matrix through hole of location division 5-1 with the conduct of piston 5 and the nose bar 2-6 of core bar 2 pegs graft and airtight combination location mutually, to strengthen locating effect, anti-detent plug tapered end 4 accidental; The effect that the syringe of present embodiment destroys the negative pressure chamber in the overcoat inner chamber is remarkable: see Figure 31, Figure 33 and Figure 34, air drain 5-2,5-3,5-4 on the roof of piston 5 inwalls, Yao Bi, the diapire formation air channel that is connected, this air channel formation current path that is connected with the ladder matrix through hole 5-1 of piston 5; See Figure 31, Figure 33, Figure 35 and Figure 36, on the end face of the head 2-1 of core bar 2, central plane, bottom surface, respectively be provided with air drain 2-1-2,2-1-3,2-1-4, each air drain formation air channel that is connected, the horizontal communication ditch 2-3-3 on the top flat 2-3-1 of this air channel and the shaft 2-3 formation current path that is connected; See Figure 31, when core bar 2 is advanced to the end, after injection is finished, plug tapered end 4 is locked in the plug lock chamber 6 by plug, twitching core bar 2 backward when wanting to draw medicinal liquid, by the ladder matrix through hole 5-1 that is arranged on the piston 5, air drain 5-2,5-3,5-4, the current path that 5-5 is connected and forms, be arranged on the air drain 2-1-2 on the core bar 2,2-1-3, the current path that 2-1-4 and horizontal communication ditch 2-3-3 are connected and form, total current path 8 that space between the upper surface of the top flat 2-3-1 of the bottom surface of piston 5 and shaft 2-3 constitutes, destroy the negative pressure chamber in the overcoat inner chamber significantly, therefore can't draw medicinal liquid, syringe reaches plug lock 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 2.
Embodiment 10
See Figure 37 to Figure 39, the specification that the present embodiment syringe is suitable for is more than 5 milliliters and 5 milliliters.The airtight location division 4-1 of the plug tapered end 4 of present embodiment syringe is a concave hole, piston 5 be concave hole in conjunction with location division 5-1; This syringe also has and connects locating rod 4-3, and the epimere that connects locating rod 4-3 can be bonding and closely be fixed among the concave hole of the airtight location division 4-1 of conduct of plug tapered end 4, to prevent to connect locating rod 4-3 accidental; Plug tapered end 4 combines location division 5-1 by the hypomere outside the concave hole of the airtight location division 4-1 of conduct that connects locating rod 4-3 and stretch out in plug tapered end 4 with the conduct of piston 5 concave hole is pegged graft and airtight in conjunction with locating mutually; All the other of plug tapered end 4 are identical with embodiment 4; The structure of plug lock chamber 6 and plug lock boss 6-1 is identical with embodiment 4.All the other are identical with embodiment 2.
Embodiment 11
See Figure 40 to Figure 42, the specification that the present embodiment syringe is suitable for is more than 5 milliliters and 5 milliliters.The syringe of present embodiment is the plug lock 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 40 and Figure 41, 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 42, 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 40, 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 40, 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 40, 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 6, can reach plug lock 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 plug lock destructing safety type syringe with enhanced safety.
Embodiment 12
See Figure 43 to Figure 44, the specification that the present embodiment syringe is suitable for is more than 5 milliliters and 5 milliliters.The syringe of present embodiment is the plug lock 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 11.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 9.
Claims (10)
1, a kind of plug lock 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 plug tapered end (4), plug tapered end (4) is provided with airtight location division (4-1), piston (5) is provided with in conjunction with location division (5-1), the combining to peg graft mutually in location division (5-1) of airtight location division (4-1) and the piston (5) of plug tapered end (4) and airtight combination is located, be provided with plug lock chamber (6) in the upper end of the inside of overcoat (3), the internal diameter in plug lock chamber (6) is less than the internal diameter 0.05mm to 58mm of the inner chamber of overcoat (3), plug tapered end (4) can match with plug lock chamber (6), fills in tapered end (4) and locks the internal diameter 0.05mm to 3.95mm in chamber (6) greater than plug with the external diameter at the place that matches in plug lock chamber (6).
2, a kind of plug lock destructing safety type syringe according to claim 1, it is characterized in that: plug tapered end (4) is provided with one or two elastic groove (4-2).
3, a kind of plug lock destructing safety type syringe according to claim 1, it is characterized in that: overcoat (3) is up-small and down-big notch cuttype overcoat, the ladder section of the upper end of the inside of notch cuttype overcoat (3) is as plug lock chamber (6).
4, a kind of plug lock destructing safety type syringe according to claim 1, it is characterized in that: the airtight location division (4-1) of plug tapered end (4) is convex column, piston (5) be the matrix through hole in conjunction with location division (5-1).
5, a kind of plug lock destructing safety type syringe according to claim 4, 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, the conduct of this air channel and piston (5) is in conjunction with the matrix through hole of location division (5-1) the formation current path that is connected.
6, a kind of plug lock destructing safety type syringe according to claim 1, it is characterized in that: the inwall of the epimere in plug lock chamber (6) has up-small and down-big tapering, the epimere of plug tapered end (4) has corresponding up-small and down-big tapering, the inwall of locking the hypomere in chamber (6) at plug is provided with plug lock boss (6-1), fill in the internal diameter of lock boss (6-1) and lock boss (6-1) the internal diameter 0.05mm to 2mm of junction mutually less than the epimere in plug lock chamber (6) with plug, the external diameter of the hypomere of plug tapered end (4) is greater than the internal diameter 0.05mm to 3.95mm of plug lock boss (6-1).
7, a kind of plug lock destructing safety type syringe according to claim 1, it is characterized in that: the airtight location division (4-1) of plug tapered end (4) is concave hole, piston (5) be convex column in conjunction with location division (5-1).
8, a kind of plug lock 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).
9, a kind of plug lock 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 plug lock 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 |
|---|---|---|---|
| CN 200320110786 CN2659472Y (en) | 2003-11-14 | 2003-11-14 | Clogging-locking self-destorying safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110786 CN2659472Y (en) | 2003-11-14 | 2003-11-14 | Clogging-locking self-destorying safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2659472Y true CN2659472Y (en) | 2004-12-01 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320110786 Expired - Fee Related CN2659472Y (en) | 2003-11-14 | 2003-11-14 | Clogging-locking self-destorying safety syringe |
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| Country | Link |
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| CN (1) | CN2659472Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007115481A1 (en) | 2006-03-28 | 2007-10-18 | Jianquan Li | Self-destroying disposable syringe and self-destroying method thereof |
-
2003
- 2003-11-14 CN CN 200320110786 patent/CN2659472Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007115481A1 (en) | 2006-03-28 | 2007-10-18 | Jianquan Li | Self-destroying disposable syringe and self-destroying method thereof |
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