CN204428536U - A kind of entry needle with defecator - Google Patents
A kind of entry needle with defecator Download PDFInfo
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- CN204428536U CN204428536U CN201420805263.5U CN201420805263U CN204428536U CN 204428536 U CN204428536 U CN 204428536U CN 201420805263 U CN201420805263 U CN 201420805263U CN 204428536 U CN204428536 U CN 204428536U
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- defecator
- shell
- handle
- spool
- entry needle
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Abstract
The utility model discloses a kind of entry needle with defecator, be made up of shell, defecator, rustless steel needle tubing and protective sleeve, defecator is arranged on shell, and defecator is made up of spool, liquid medicine filtering membrane or filtering plug.The defecator installing hole of defecator and shell passes through interference fit, the spool of defecator is arranged in the cylindrical hole of shell, contiguous block is arranged in defecator installing hole, handle is arranged on outside shell, swing handle can make spool can rotate in the cylindrical hole of shell, selects medicinal liquid through entry needle the need of filtration.In use, first by syringe pump medicinal liquid, medicinal liquid does not directly enter injector cartridge from entry needle passage through defecator, before injection liquid, then the handle on rotary injection pin defecator, change medicinal liquid and flow through passage, can through the defecator of entry needle when medicinal liquid is injected, the medicinal liquid entered in human body is purified, avoids foreign body and enter the injury brought in human body, ensure the drug safety of patient.
Description
Technical field
This utility model relates to the aseptic medical utensil for clinical vein and intramuscular injection or infusion, especially relates to a kind of entry needle with defecator.
Background technology
Single use aseptic injection pin has used for many years in the medical field, supporting syringe be used for clinical in muscle, vein, subcutaneous, intradermal injection or infusion use, its contour structures is simple, easy to use, because it is as disposable devices, thus stop the cross infection of patient.
According to domestic and foreign literature data report; find in the clinical ampoule bottle process opening glass; have the sightless glass chip of a large amount of naked eyes and fall into ampoule bottle inner liquid medicine; or; in the layoutprocedure of transfusion medicinal liquid, adopt in the plug process of needle tubing puncture cillin bottle or infusion solutions container, buffings microgranule can be produced; meanwhile, in medicinal liquid, itself also can have the foreign body such as particulate matter or exogenous impurity.Syringe is when extracting medicinal liquid, these are present in the cylindrical shell of the microgranule in medicinal liquid, chip, the whole suction injection device of impurity, and the normal injection pin of domestic use is all do not have defecator, at entry needle, medicinal liquid is injected the process of human muscle or vein, also the microgranule in medicinal liquid, chip, impurity are all injected into tissue to have suffered, these external foreign bodies cause serious infringement by patient, threaten the life of patient time serious.
Along with the development of society, people have also recognized the hazardness of the foreign body in medicinal liquid to human body, medical device manufacturers have also been invented the liquid medicine filter of supporting syringe, there are small part medical personnel have employed in clinical gradually and increase the mode of defecator to carry out the filtration of medicinal liquid in injector tip, concrete operation method is: first aspirated by medicinal liquid with normal injection pin, take off entry needle again, private filter is arranged on syringe adapter, finally entry needle is arranged on liquid medicine filter, finally medicinal liquid is injected in human body, also the filtration to medicinal liquid is served, but not only this operating process loaded down with trivial details but also inconvenient, and non-sterile operation causes the pollution of medicine while changing apparatus, and add the liquid medicine filter product of use, cause the cost that patient seeks medical advice, because some above drawback, the method of this filtering liquid medicine is not widely used clinically.
Therefore, it is simple, easy and simple to handle, with low cost to invent a kind of structure, can mass production, and the entry needle that can filter medicinal liquid with defecator is just particularly important.
Summary of the invention
The purpose of this utility model is to provide a kind of entry needle with defecator, and this entry needle and syringe support the use, and defecator can microgranule, chip, impurity effectively in filtering liquid medicine, to ensure the drug safety of patient.
The purpose of this utility model is achieved in that
With an entry needle for defecator, feature is: be made up of shell, defecator, rustless steel needle tubing, protective sleeve, wherein:
The rear end of shell be provided with Intermediate Gray run through after the standard female cone locked joints of stomidium, cylindrical hole is provided with at the middle part of shell, front aperture is provided with in the front end of shell, rear stomidium communicates with cylindrical hole, front aperture, and the diameter of cylindrical hole is greater than the diameter of rear stomidium and front aperture, rustless steel needle tubing is arranged in front aperture, and the front end that protective sleeve is assemblied in shell covers rustless steel needle tubing; Be provided with quarter turn and through defecator installing hole at the sidewall of the cylindrical hole of shell, defecator installing hole communicates with cylindrical hole is vertical;
Defecator is made up of spool, liquid medicine filtering membrane or filtering plug, contiguous block and handle, the bottom of spool is the cylinder of semi-cylindrical or 3/4 volume, in the middle part of cylindrical side, be provided with through hole, the upper end of through hole is greater than lower end, and liquid medicine filtering membrane or filtering plug are arranged in through hole; The annular groove being less than one week length is also provided with in cylindrical side; Be provided with handle at the right-hand member of spool, be provided with anti-slip veins at the sidewall of handle; Arrow is provided with at the outer surface of handle; Block reinforcement is provided with below the inner surface of handle.
The defecator installing hole of defecator and shell passes through interference fit, the spool of defecator is arranged in the cylindrical hole of shell, contiguous block is arranged in defecator installing hole, and handle is arranged on outside shell, and swing handle can make spool can rotate in the cylindrical hole of shell.
The outside dimension of rustless steel needle tubing is 0.3-2.4 ㎜, and length is less than 10 ㎝, and wherein external diameter is the needle tubing of 0.3-0.9 ㎜ is muscle, vein, subcutaneous, intradermal needle pipe, and external diameter is the needle tubing of 1.2-2.4 ㎜ is infusion needle tubing.
Liquid medicine filtering membrane or filtering plug are by welding or interference fit in spool bore, and the medical filtration medium normal pore size of liquid medicine filtering membrane or filtering plug is 0.2-15 μm.The shape of liquid medicine filtering membrane or filtering plug is the one in circular, fan-shaped, square, rectangle, ellipse or triangle.
This utility model is equipped with defecator on the shell of entry needle, in use, first by syringe pump medicinal liquid, medicinal liquid does not directly enter injector cartridge from entry needle passage through defecator, before injection liquid, then the handle on rotary injection pin defecator, change medicinal liquid and flow through passage, can, through the defecator of entry needle, the medicinal liquid entered in human body be purified when medicinal liquid is injected, avoid foreign body and enter the injury brought in human body.
This utility model tool has the following advantages:
1, this utility model efficiently solves the medical filtration problem of entry needle when carrying out muscle, vein, subcutaneous, intradermal injection or infusion, ensure that the drug safety of patient, and its contour structures is simple, easy and simple to handle.
2, this utility model production cost is low, does not increase the cost of seeking medical advice of patient, can alleviate medical personnel's workload simultaneously.
3, this utility model be applicable to the syringe of routine or infusion set supporting, can extensive use clinical.
Accompanying drawing explanation
Fig. 1 is that this utility model is in the schematic diagram of medicinal liquid without filtration condition
Fig. 2 is the sectional view of shell;
Fig. 3 is the schematic diagram of shell;
Fig. 4 is the sectional view of defecator;
Fig. 5 is the schematic diagram of defecator;
The schematic diagram in liquid medicine flow direction when Fig. 6 is this utility model aspiration medicinal liquid;
Fig. 7 is that this utility model is in can the schematic diagram of filtering liquid medicine state;
The schematic diagram in liquid medicine flow direction when Fig. 8 is this utility model injection liquid.
Detailed description of the invention
Contrast accompanying drawing below in conjunction with embodiment this utility model is described in further detail.
With an entry needle for defecator, be made up of shell 1, defecator 2, rustless steel needle tubing 3, protective sleeve 4, wherein:
The rear end of shell 1 be provided with Intermediate Gray run through after the standard female cone locked joints 11 of stomidium 14, cylindrical hole 13 is provided with at the middle part of shell 1, front aperture 12 is provided with in the front end of shell 1, rear stomidium 14 communicates with cylindrical hole 13, front aperture 12, and the diameter of cylindrical hole 13 is greater than the diameter of rear stomidium 14 and front aperture 12, rustless steel needle tubing 3 is arranged in front aperture 12, and the front end that protective sleeve 4 is assemblied in shell 1 covers rustless steel needle tubing 3; Be provided with quarter turn and through defecator installing hole 15 at the sidewall of the cylindrical hole 3 of shell 1, defecator installing hole 15 communicates with cylindrical hole 13 is vertical;
Defecator 2 is made up of spool 21, liquid medicine filtering membrane or filtering plug 22, contiguous block 27 and handle 26, the bottom of spool 21 is the cylinder 23 of semi-cylindrical or 3/4 volume, through hole 24 is provided with in the middle part of the side of cylinder 23, the upper end of through hole 24 is greater than lower end, and liquid medicine filtering membrane or filtering plug 22 are arranged in through hole 24; Half cycle annular groove 25 is also provided with in the side of cylinder 23; Be provided with handle 26 at the right-hand member of spool 21, be provided with anti-slip veins 261 at the sidewall of handle 26, prevent from skidding during rotational valve core; The arrow 28 being used to indicate and whether filtering is provided with at the outer surface of handle 26; The block reinforcement 29 crossing position when preventing spool from rotating in the enclosure is provided with below the inner surface of handle 26.
Defecator 2 passes through interference fit with the defecator installing hole 15 of shell 1, the spool 21 of defecator 2 is arranged in the cylindrical hole 13 of shell 1, contiguous block 27 is arranged in defecator installing hole 15, handle 26 is arranged on outside shell 1, and swing handle 26 can make spool 21 can rotate in the cylindrical hole 13 of shell 1.
The outside dimension of rustless steel needle tubing is 0.3-2.4 ㎜, and length is less than 10 ㎝, and wherein external diameter is the needle tubing of 0.3-0.9 ㎜ is muscle, vein, subcutaneous, intradermal needle pipe, and external diameter is the needle tubing of 1.2-2.4 ㎜ is infusion needle tubing.
Liquid medicine filtering membrane or filtering plug are by welding or interference fit in spool bore, and the medical filtration medium normal pore size of liquid medicine filtering membrane or filtering plug is 0.2-15 μm.The shape of liquid medicine filtering membrane or filtering plug is the one in circular, fan-shaped, square, rectangle, ellipse or triangle.
When arrow 28 is consistent with rustless steel needle tubing 3 direction, the through hole 24 of medicinal liquid in the middle part of spool 21 flows to, and flows out through liquid medicine filtering membrane or filtering plug 22, is defecator 2 and has filtered medicinal liquid; When arrow 28 and rustless steel needle tubing 3 direction degree in a vertical angle 90 degree, medicinal liquid flows out from spool 21 half cycle annular groove 25 and the gap of shell 1, and defecator 2 does not have filtering liquid medicine.Block reinforcement 29 below handle 26 inner surface is corresponding with the defecator installing hole 15 of the quarter turn on shell 1 sidewall, crosses position when can prevent spool 21 from rotating in shell 1.
Claims (7)
1. with an entry needle for defecator, feature is: be made up of shell, defecator, rustless steel needle tubing, protective sleeve, wherein:
The rear end of shell be provided with Intermediate Gray run through after the standard female cone locked joints of stomidium, cylindrical hole is provided with at the middle part of shell, front aperture is provided with in the front end of shell, rear stomidium communicates with cylindrical hole, front aperture, and the diameter of cylindrical hole is greater than the diameter of rear stomidium and front aperture, rustless steel needle tubing is arranged in front aperture, and the front end that protective sleeve is assemblied in shell covers rustless steel needle tubing; Be provided with quarter turn and through defecator installing hole at the sidewall of the cylindrical hole of shell, defecator installing hole communicates with cylindrical hole is vertical;
Defecator is made up of spool, liquid medicine filtering membrane or filtering plug, contiguous block and handle, the bottom of spool is the cylinder of semi-cylindrical or 3/4 volume, through hole is provided with in the middle part of cylindrical side, the upper end of through hole is greater than lower end, liquid medicine filtering membrane or filtering plug are arranged in through hole, are provided with handle at the right-hand member of spool; Liquid medicine filtering membrane or filtering plug are fixed in spool bore, and the medical filtration medium normal pore size of liquid medicine filtering membrane or filtering plug is 0.2-15 μm;
The defecator installing hole of defecator and shell passes through interference fit, the spool of defecator is arranged in the cylindrical hole of shell, contiguous block is arranged in defecator installing hole, and handle is arranged on outside shell, and swing handle makes spool can rotate in the cylindrical hole of shell.
2. entry needle according to claim 1, is characterized in that: be provided with half cycle annular groove in cylindrical side.
3. entry needle according to claim 1, is characterized in that: be provided with anti-slip veins at the sidewall of handle.
4. entry needle according to claim 1, is characterized in that: be provided with arrow at the outer surface of handle.
5. entry needle according to claim 1, is characterized in that: below the inner surface of handle, be provided with block reinforcement.
6. entry needle according to claim 1, is characterized in that: the shape of liquid medicine filtering membrane or filtering plug is the one in circular, fan-shaped, square, rectangle, ellipse or triangle.
7. entry needle according to claim 1, is characterized in that: the outside dimension of rustless steel needle tubing is 0.3-2.4 ㎜, and length is less than 10 ㎝.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420805263.5U CN204428536U (en) | 2014-12-19 | 2014-12-19 | A kind of entry needle with defecator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420805263.5U CN204428536U (en) | 2014-12-19 | 2014-12-19 | A kind of entry needle with defecator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204428536U true CN204428536U (en) | 2015-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420805263.5U Active CN204428536U (en) | 2014-12-19 | 2014-12-19 | A kind of entry needle with defecator |
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| Country | Link |
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| CN (1) | CN204428536U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107456632A (en) * | 2017-09-23 | 2017-12-12 | 吉林大学 | A kind of anti-micro particle filtering formula syringe |
| CN107929879A (en) * | 2017-12-11 | 2018-04-20 | 北京麦康医疗器械有限公司 | A kind of precise filtering injector |
| CN108325029A (en) * | 2018-04-23 | 2018-07-27 | 吉林大学 | A kind of rotary anti-particle syringe |
| CN108434554A (en) * | 2018-04-23 | 2018-08-24 | 吉林大学 | A kind of push type Simple dustproof syringe |
| CN110302466A (en) * | 2019-07-23 | 2019-10-08 | 北京医院 | A kind of triple valve with filtering function |
| CN110353991A (en) * | 2019-07-25 | 2019-10-22 | 江苏苏云医疗器材有限公司 | A kind of injection precise filtering device and its filter method |
-
2014
- 2014-12-19 CN CN201420805263.5U patent/CN204428536U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107456632A (en) * | 2017-09-23 | 2017-12-12 | 吉林大学 | A kind of anti-micro particle filtering formula syringe |
| CN107929879A (en) * | 2017-12-11 | 2018-04-20 | 北京麦康医疗器械有限公司 | A kind of precise filtering injector |
| CN108325029A (en) * | 2018-04-23 | 2018-07-27 | 吉林大学 | A kind of rotary anti-particle syringe |
| CN108434554A (en) * | 2018-04-23 | 2018-08-24 | 吉林大学 | A kind of push type Simple dustproof syringe |
| CN110302466A (en) * | 2019-07-23 | 2019-10-08 | 北京医院 | A kind of triple valve with filtering function |
| CN110353991A (en) * | 2019-07-25 | 2019-10-22 | 江苏苏云医疗器材有限公司 | A kind of injection precise filtering device and its filter method |
| CN110353991B (en) * | 2019-07-25 | 2024-05-14 | 江苏苏云医疗器材有限公司 | Precise filtering device for injection and filtering method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |