CN2885294Y - Single-use safety syringe - Google Patents
Single-use safety syringe Download PDFInfo
- Publication number
- CN2885294Y CN2885294Y CN 200620069633 CN200620069633U CN2885294Y CN 2885294 Y CN2885294 Y CN 2885294Y CN 200620069633 CN200620069633 CN 200620069633 CN 200620069633 U CN200620069633 U CN 200620069633U CN 2885294 Y CN2885294 Y CN 2885294Y
- Authority
- CN
- China
- Prior art keywords
- needle stand
- syringe
- union joint
- section
- push rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a disposable safety injector comprising an injection muffle and a push bar, a needle stand connector is provided on the front injection muffle, a lock joint device is provided between the needle stand connector and the front push bar, the diameter of contact face between the needle stand connector and the injection muffle is less than the diameter of injector liquid storage cavity, an anti-back cover is extended by the floor in the liquid storage cavity and the needle stand connector, the anti-back cover provides several axially recess and provides barb lengths in the inner wall of the bottom, the barb lengths is hanged on the back face of the needle stand connector. When using, the anti-back covers can effectively prevent that the needle stand connector premature backing to the injection muffle due to lack of needle-resistance or misoperation, the disabler injection can be avoided.
Description
Technical field
This utility model relates to a kind of disposable syringe safe in utilization.
Background technology
Disposable syringe is extensive use of in medical institutions as the medical apparatus and instruments of routine, but for various reasons, cross infection happens occasionally, in injection use and apparatus cleaning, because of the also corresponding increase of the example of accidental puncture bacteria infection, its height hazardness has constituted serious prestige association to medical personnel and sufferer personnel's life, although associated mechanisms has also been developed some new syringes, and inaccessible ideal effect between type self-destroyed and safety.
Existing safety injector mainly is the entry needle internal withdraw type, and it comprises sleeve and push rod, and telescopic front end is provided with the needle stand union joint, so that entry needle is installed, is provided with fastening device between the front end of push rod and the needle stand union joint.After injector to inject, as long as toward last pushing away, push rod front end and needle stand union joint bottom will be connected and fixed with push rod, then with the past post-tensioning of push rod, entry needle and needle stand union joint are retracted in the syringe sleeve together, thereby can prevent that syringe is repeated to use.But such syringe disposable safe in utilization still exists many shortcomings and hidden danger:
1. in order to make the needle stand union joint can return in the syringe sleeve, needle stand union joint and syringe sleeve front inner wall are the sleeve type structure, otherwise push rod is difficult to the needle stand union joint is retracted in the syringe sleeve, but when having an acupuncture treatment to patient, not enough because resist the ballistic power of acupuncture treatment generation probably, the needle stand union joint has been return in the syringe sleeve, thereby made syringe lose the effect of injection.
2. when using the molten medicine of syringe, generally all earlier entry needle is inserted in the liquid medicine bottle earlier and extract liquid medicine, then the liquid medicine that extracts is injected in the powdered medicine bottle, draw back in the syringe after shaking up, could be patient injection then.In the time of in liquid medicine is injected into powdered medicine bottle, be easy to because overexertion fixes the fastening device snapping between push rod front end and the needle stand union joint bottom, when drawing back liquid medicine, the needle stand union joint has just been return in the syringe sleeve, thereby makes syringe lose the effect of injection.
Summary of the invention
The purpose of this utility model is: a kind of disposable syringe safe in utilization is provided, this syringe is provided with the retaining cover, when the barb in the retaining cover can effectively prevent the syringe acupuncture treatment, because of resisting the not enough or misoperation of acupuncture treatment power the needle stand union joint is return in the shot sleeve too early, lost effect to avoid syringe.
The technical solution of the utility model is: a kind of disposable syringe safe in utilization, comprise syringe sleeve and push rod, the front end of syringe sleeve is provided with the needle stand union joint, be provided with fastening device between the front end of needle stand union joint and push rod, the diameter of described needle stand union joint and syringe sleeve contact surface is less than the diameter of syringe liquid storage cylinder, the step place of needle stand union joint and the liquid storage cylinder retaining cover that extended back, retaining puts and has several axial groovings, the rearward end inwall of retaining cover is provided with barb, and barb is hooked on the rear end face of needle stand union joint.
The further technical scheme of this utility model is: a kind of disposable syringe safe in utilization, comprise syringe sleeve and push rod, the front end of syringe sleeve is provided with the needle stand union joint, be provided with fastening device between the front end of needle stand union joint and push rod, the diameter of described needle stand union joint and syringe sleeve contact surface is less than the diameter of syringe liquid storage cylinder, the step place of needle stand union joint and the liquid storage cylinder retaining cover that extended back, retaining puts and has several axial groovings, the rearward end inwall of retaining cover is provided with barb, and barb is hooked on the rear end face of needle stand union joint; The rearward end of described retaining cover is provided with inner conical surface, and the front end of push rod is provided with boss, and when fastening device snapping fixedly the time, boss stretches in the inner conical surface, and the retaining cover is strutted; The rearward end of described push rod is provided with the into sheet that ends that extends forward, ends the into inside bending of front end of sheet, and bending section is conflicted at the rear end face of syringe sleeve; Described needle stand union joint comprises the outer cone section that is connected with entry needle, the rear portion of outer cone section is the anti-rotation section, the outer wall of anti-rotation section is provided with several axial notches, syringe sleeve inwall corresponding to axial notch is provided with convex tendon, convex tendon embeds in the groove, the rear portion of anti-rotation section is for preventing the section of going out, prevent the diameter of the diameter of the section of going out greater than the convex tendon top, the rear portion of preventing the section of going out is a pedestal, pedestal is with lining outward, the front end face of lining and prevent being provided with sealing ring, the periphery of sealing ring and the inner wall sealing of syringe sleeve between the rear end face of the section of going out.
The utility model has the advantages that:
1. the retaining cover because the step place of needle stand union joint and liquid storage cylinder has extended back, the rearward end inwall of retaining cover is provided with barb, barb is hooked on the rear end face of needle stand union joint, therefore the needle stand union joint is connected very reliable with syringe sleeve, when giving patient injection, can be because of the power of resisting acupuncture treatment not enough or misoperation and when syringe does not also use, the needle stand union joint is return in the syringe sleeve, thereby make syringe lose the effect of injection.
2. because the rearward end of push rod is provided with the into sheet that ends that extends forward, end the into inside bending of front end of sheet, bending section is conflicted at the rear end face of syringe sleeve, so when making up a prescription, can the fastening device snapping between push rod front end and the needle stand union joint bottom be fixed because of overexertion, only pressing under the situation of ending sheet into, push rod could advance further, and fastening device and needle stand union joint are fixed, and when drawing back the needle stand union joint is just return in the syringe sleeve again.
3. because the anti-rotation section is provided with several axial notches outward, be provided with convex tendon corresponding to the syringe sleeve inwall of axial notch, convex tendon embeds in the groove, therefore when screwing entry needle, and the situation that can occur rotating not.
Description of drawings
The utility model will be further described below in conjunction with drawings and Examples:
Fig. 1 is a structural representation of the present utility model.
Wherein: 1 syringe sleeve; 2 push rods; 3 needle stand union joints; 4 fastening devices; 5 liquid storage cylinders; 6 retaining covers; 7 groovings; 8 barbs; 9 inner conical surfaces; 10 boss; 11 end into sheet; 12 bending sections; 13 outer cone sections; 14 anti-rotation sections; 15 grooves; 16 convex tendons; 17 prevent the section of going out; 18 pedestals; 19 linings; 20 sealing rings.
The specific embodiment
Embodiment: as shown in Figure 1, a kind of disposable syringe safe in utilization comprises syringe sleeve 1 and push rod 2, and the rearward end of push rod 2 is provided with the into sheet 11 that ends that extends forward, end the into inside bending of front end of sheet 11, bending section 12 is conflicted at the rear end face of syringe sleeve 1; The front end of syringe sleeve 1 is provided with needle stand union joint 3, needle stand union joint 3 comprises the outer cone section 13 that is connected with entry needle, the rear portion of outer cone section 13 is an anti-rotation section 14, the outer wall of anti-rotation section 14 is provided with several axial notches 15, syringe sleeve 1 inwall corresponding to axial notch 15 is provided with convex tendon 16, convex tendon 16 embeds in the groove 15, the rear portion of anti-rotation section 14 is for preventing the section of going out 17, prevent the diameter of the diameter of the section of going out 17 greater than convex tendon 16 tops, the rear portion of preventing the section of going out 17 is a pedestal 18, the outer linings 19 that are with of pedestal 18, the front end face of lining 19 and prevent being provided with sealing ring 20, the inner wall sealing of the periphery of sealing ring 20 and syringe sleeve 1 between the rear end face of the section of going out 17; Be provided with fastening device 4 between the front end of needle stand union joint 3 and push rod 2, the diameter of needle stand union joint 3 and syringe sleeve 1 contact surface is less than the diameter of syringe liquid storage cylinder 5, the step place of needle stand union joint 1 and the liquid storage cylinder 5 retaining cover 6 that extended back, have several axial groovings 7 on the retaining cover 6, the rearward end inwall of retaining cover 6 is provided with barb 8, and barb 8 is hooked on the rear end face of needle stand union joint 3; The rearward end of retaining cover 6 is provided with inner conical surface 9, and the front end of push rod is provided with boss 10, and when fastening device 4 snappings fixedly the time, boss 10 stretches in the inner conical surface 9, and retaining is overlapped 6 struts.
When this utility model uses just as common syringe, but after having injected, as long as push rod 2 is pushed away forward, boss 10 on the push rod 2 will be pressed to retaining cover 6, retaining cover 6 is strutted, fastening device 4 between needle stand union joint 3 and push rod 2 front ends is fixed with regard to snapping, again with push rod 2 toward post-tensionings, needle stand union joint 3 has just been return in the syringe sleeve 1.
The retaining cover 6 because the step place of needle stand union joint 3 and liquid storage cylinder 5 has extended back, the rearward end inwall of retaining cover 6 is provided with barb 8, barb 8 is hooked on the rear end face of needle stand union joint 3, therefore needle stand union joint 3 is connected very reliable with syringe sleeve 1, when giving patient injection, can be because of the power of resisting acupuncture treatment not enough or misoperation and when syringe does not also use, needle stand union joint 3 is return in the syringe sleeve 1, thereby make syringe lose the effect of injection; Because the rearward end of push rod 2 is provided with the into sheet 11 that ends that extends forward, end the into inside bending of front end of sheet 11, bending section 12 is conflicted at the rear end face of syringe sleeve 1, so when making up a prescription, can fastening device 4 snappings between push rod 2 front ends and needle stand union joint 3 bottoms be fixed because of overexertion, only pressing under the situation of ending sheet 11 into, push rod 2 could advance further, makes fastening device 4 fixing with needle stand union joint 3, and needle stand union joint 3 is just return in the syringe sleeve 1 when drawing back again; Because outer several axial notches 14 that are provided with of anti-rotation section 14, be provided with convex tendon 15 corresponding to syringe sleeve 1 inwall of axial notch 14, convex tendon 15 embeds in the grooves 14, therefore when screwing entry needle, the situation that can occur rotating not.
Claims (4)
1. disposable syringe safe in utilization, comprise syringe sleeve (1) and push rod (2), the front end of syringe sleeve (1) is provided with needle stand union joint (3), be provided with fastening device (4) between the front end of needle stand union joint (3) and push rod (2), it is characterized in that: the diameter of described needle stand union joint (3) and syringe sleeve (1) contact surface is less than the diameter of syringe liquid storage cylinder (5), syringe sleeve (1) the retaining cover (6) that extended back at the step place of needle stand union joint (3) and liquid storage cylinder (5), have several axial groovings (7) on the retaining cover (6), the rearward end inwall of retaining cover (6) is provided with barb (8), and barb (8) is hooked on the rear end face of needle stand union joint (3).
2. according to the described disposable syringe safe in utilization of claim 1, it is characterized in that: the rearward end of described retaining cover (6) is provided with inner conical surface (9), the front end of push rod (2) is provided with boss (10), when fastening device (4) snapping fixedly the time, boss (10) stretches in the inner conical surface (9), and retaining cover (6) is strutted.
3. according to the described disposable syringe safe in utilization of claim 1, it is characterized in that: the rearward end of described push rod (2) is provided with the into sheet (11) that ends that extends forward, end the into inside bending of front end of sheet (11), bending section (12) is conflicted at the rear end face of syringe sleeve (1).
4. according to the described disposable syringe safe in utilization of claim 1, it is characterized in that: described needle stand union joint (3) comprises the outer cone section (13) that is connected with entry needle, the rear portion of outer cone section (13) is anti-rotation section (14), the outer wall of anti-rotation section (14) is provided with several axial notches (15), syringe sleeve (1) inwall corresponding to axial notch (15) is provided with convex tendon (16), convex tendon (16) embeds in the groove (15), the rear portion of anti-rotation section (14) is for preventing the section of going out (17), prevent the diameter of the diameter of the section of going out (17) greater than convex tendon (16) top, the rear portion of preventing the section of going out (17) is pedestal (18), the outer lining (19) that is with of pedestal (18), the front end face of lining (19) and prevent being provided with sealing ring (20), the inner wall sealing of the periphery of sealing ring (20) and syringe sleeve (1) between the rear end face of the section of going out (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069633 CN2885294Y (en) | 2006-02-22 | 2006-02-22 | Single-use safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069633 CN2885294Y (en) | 2006-02-22 | 2006-02-22 | Single-use safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2885294Y true CN2885294Y (en) | 2007-04-04 |
Family
ID=37960387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620069633 Expired - Fee Related CN2885294Y (en) | 2006-02-22 | 2006-02-22 | Single-use safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2885294Y (en) |
-
2006
- 2006-02-22 CN CN 200620069633 patent/CN2885294Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WU LINYUAN Free format text: FORMER OWNER: LINHUA MEDICAL EQUIPMENT CO., LTD., SHANGHAI Effective date: 20120511 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200070 ZHABEI, SHANGHAI TO: 215121 SUZHOU, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120511 Address after: 215121 Suzhou Lin Hua medical instruments Co., Ltd., No. 3, Xin Lu, Suzhou Industrial Park, Jiangsu Patentee after: Wu Linyuan Address before: 200070 Shanghai city middle Tianmu Road No. 585 Xinmei Building 9 floor B block Patentee before: Shanghai Linhua Medical Instrument Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070404 Termination date: 20140222 |