CN103585688A - End face exhausting type low-damping dosing needle - Google Patents
End face exhausting type low-damping dosing needle Download PDFInfo
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- CN103585688A CN103585688A CN201310612571.6A CN201310612571A CN103585688A CN 103585688 A CN103585688 A CN 103585688A CN 201310612571 A CN201310612571 A CN 201310612571A CN 103585688 A CN103585688 A CN 103585688A
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- needle
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- connection block
- press mold
- sleeve pipe
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Abstract
An end face exhausting type low-damping dosing needle comprises a hollow needle body, a needle cannula, a needle fixing base and an air filtering film, wherein exhaust holes are formed in the lateral side of a needle protection pipe of the needle cannula, end face vent holes communicated with the outside are formed in the bottom of a butt joint hole of the needle fixing base, the air filtering film is arranged on the bottom of the butt joint hole, the upper end of the needle cannula is arranged in a sleeved butt joint hole in the lower end of the hollow needle body in a sleeved mode, the lower end face of a connecting base pipe presses the air filtering film, and the exhaust holes are communicated with the end face vent holes. The function of the end face exhausting type low-damping dosing needle is the same as the function of an injection dosing device provided in Chinese patent 01254144.3. Meanwhile, both the needle cannula and the needle fixing base are of structures with axial core pulling easy to achieve, a compacting tool set is simple in structure, forming and compacting efficiency is high, the rate of obtained finished products is high, comprehensive cost of products is reduced, and industrialization is facilitated.
Description
Technical field:
The invention belongs to technical field of medical instruments, the drug feeding device of particularly using during a kind of injectable drug.
Background technology:
Transfusion is a kind of Therapeutic Method of extensive use, before infusing, conventionally powder or liquor medicine first need to be become to medicinal liquid with liquid preparation or solution preparation to be infused, and then liquid drug is filled in solution to be infused.At present, the preparation of medicated powder and medicament generally adopts syringe to complete.Concrete is operating as: syringe is inserted and in medicinal liquid bottle, extracts a small amount of medicinal liquid, then extract syringe and insert in powdered medicine bottle, liquid medicine injection is entered in powdered medicine bottle, handling and rock or agitator stirring, after medicated powder and medicinal liquid dissolve stir completely, then extract mixed liquor out and inject in infusion bottle.Above-mentioned, make up a prescription in process, because medicinal liquid bottle is hermetically-sealed construction, when in bottle, notes add liquid, pressure of the inside of a bottle will constantly raise, and therefore, when medical worker operates, require great effort very much.
For this reason, people have proposed multiple solution, a kind of Medicine adder for injection providing in Chinese patent 01254144.3, it is a kind of side exhaust structure, comprise hollow needle, hollow needle stand, sleeve pipe, casing seat and air-filtering membrane, hollow needle is fixed on hollow needle stand, in hollow needle, be provided with liquid-through hole, sleeve pipe is fixed on casing seat, between hollow needle and sleeve pipe, there is certain gap, casing seat and hollow needle stand are fixed together, and the sidepiece of casing seat is provided with blow vent, and in blow vent, are provided with one deck air-filtering membrane.When using this drug feeding device, the inside and outside air pressure of medicine bottle ventilates to maintain balance by the gap between hollow needle and sleeve pipe, so rapid operation, can increase work efficiency.But blow vent is arranged on the side of casing seat, compacting tool set structure is very complicated, needs bidirectional knockout core, and the making required precision of mould is high, and the qualification rate of stampings is low.
Summary of the invention:
The object of this invention is to provide a kind of end face exhausting low resistance medicine feeding needle, it is simple in structure, is convenient to compacting and assembling, and serviceability is identical with the Medicine adder for injection that Chinese patent 01254144.3 provides.
The technical scheme that the present invention takes is as follows:
A kind of end face exhausting low resistance medicine feeding needle, it is characterized in that: comprise hollow needle, needle cannula, pin holder, air-filtering membrane and press mold sleeve pipe, described needle cannula comprises protects needle tubing and Connection Block pipe, protects the top that needle tubing is arranged on Connection Block pipe, in the side of protecting needle tubing, is provided with steam vent, described pin holder is by the upper connecting base being coaxially set, Gu nook closing member axle and syringe Connection Block form, Gu nook closing member axle is arranged on the center of the butt hole of upper connecting base, syringe Connection Block is arranged on the lower end of upper connecting base, in the bottom of butt hole, be provided with the end face venthole interlinking with the external world, the lower end of hollow needle is fixed in solid nook closing member axle, the pin hole of hollow needle communicates with the endoporus of Connection Block pipe, bottom at butt hole is provided with air-filtering membrane, air-filtering membrane cover end face venthole above, press mold casing pipe sleeve is contained on solid nook closing member axle, in the upper end of press mold sleeve pipe, be provided with end face air inlet duct, air-filtering membrane is pushed down in the lower surface of press mold sleeve pipe, needle cannula is sleeved on the needle handle of hollow needle by protecting needle tubing, Connection Block pipe box is contained in the butt hole of pin holder, air-filtering membrane is pushed down in the lower surface of Connection Block pipe, the end face venthole of the steam vent in needle cannula and pin holder interlinks.
Further, the structure that steam vent and end face venthole interlink is: have air inlet gap protecting between pin hole and needle handle external diameter, between the cylindrical of press mold sleeve pipe and the cylindrical of Connection Block pipe, there is air inlet gap, in the upper end of press mold sleeve pipe, be provided with end face air inlet duct, the steam vent in needle cannula interlinks by protecting the air inlet gap that has between end face air inlet duct, press mold sleeve pipe cylindrical and the Connection Block pipe cylindrical of the air inlet gap that has between pin hole and needle handle external diameter, press mold sleeve pipe upper end and the end face venthole of air-filtering membrane and pin holder.
Further, Gu the upper surface of nook closing member axle is lower 3～6 millimeters than the upper surface of upper connecting base.
Further, the quantity of described end face venthole is more than 2.
Further, in press mold sleeve pipe upper end, be provided with equably 2～8 end face air inlet ducts.
The Medicine adder for injection technical scheme providing with Chinese patent 01254144.3 is compared, owing to having improved the structure of needle cannula and pin holder, steam vent in needle cannula is by protecting the air inlet gap having between pin hole and hollow needle external diameter, the end face air inlet duct of press mold sleeve pipe upper end, the air inlet gap having between press mold sleeve pipe cylindrical and Connection Block pipe cylindrical, the end face venthole of air-filtering membrane and pin holder interlinks, formed axial exhaust ducts, when the present invention is arranged on when extracting liquid pharmaceutical on syringe and dissolving to the fluid injection of powder body medicine bottle, first by hollow needle, the needle tubing that protects together with needle cannula epimere enters in bottle, the push rod of pushing syringe, liquid in syringe just sprays from the liquid outlet of hollow needle epimere, powder body medicine is impacted to dissolving, now the pressure in bottle can rise, Compressed Gas in bottle is discharged by the above-mentioned axial exhaust road arranging in the present invention, guarantee pressure of the inside of a bottle and extraneous balance, so just can make syringe and the resistance that the present invention is used in conjunction with minimum, realize the low resistance function of injection dosing, make in medical worker's infusion process drawing liquid fluid injection feeding operations free and relaxed.Its function is identical with the Medicine adder for injection that Chinese patent 01254144.3 provides.
Meanwhile, due to the equal structure for ease of axially loosing core of needle cannula and pin holder, compacting tool set is simple in structure, and molding compacting efficiency is high, and gained yield rate is high, and the integrated cost of product reduces, and is more conducive to industrialization.
Accompanying drawing explanation:
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is the structural representation of needle cannula in Fig. 1;
Fig. 3 is the structural representation of hollow needle holder in Fig. 1;
Fig. 4 is the top view of Fig. 3;
Fig. 5 is the structural representation of press mold sleeve pipe in Fig. 1;
Fig. 6 is the top view of Fig. 5;
In figure, 1-hollow needle; 2-needle cannula; 3-pin holder; 4-air-filtering membrane; 5-press mold sleeve pipe; 11-liquid outlet; 12-needle handle; 13-pin hole; 21-protects needle tubing; 22-changeover portion; 23-Connection Block pipe; 24-pin fixing hole; 25-protects pin hole; 26-steam vent; 31-upper connecting base; The solid nook closing member axle of 32-; 33-syringe Connection Block; 34-butt hole; 35-end face venthole; 51-end face air inlet duct.
The specific embodiment:
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described:
Embodiment 1: a kind of end face exhausting low resistance medicine feeding needle, as shown in Fig. 1～Fig. 6, it is by hollow needle 1, needle cannula 2, pin holder 3, air-filtering membrane 4 and press mold sleeve pipe 5 form, described needle cannula 2 is from top to bottom by protecting needle tubing 21, changeover portion 22 and Connection Block pipe 23 form, protecting needle tubing 21 is comprised of cone and body, cone is positioned at the upper end of body, the size of cone upper port is identical with needle handle 12 external diameters of hollow needle 1, the endoporus that protects needle tubing 21 is for by pin fixing hole 24 with protect the stepped hole that pin hole 25 forms and be, pin fixing hole 24 is arranged on the below of protecting pin hole 25, in the side of protecting needle tubing 21, be provided with steam vent 26, described pin holder 3 is by the upper connecting base 31 being coaxially set, Gu nook closing member axle 32 and syringe Connection Block 33 form, Gu nook closing member axle 32 is arranged on the center of the butt hole 34 of upper connecting base 31, Gu the upper surface of nook closing member axle 32 is lower 3 millimeters than the upper surface of upper connecting base 31, syringe Connection Block 33 is arranged on the lower end of upper connecting base 31, in the bottom surface of butt hole 34, be provided with equably four end face ventholes 35 that interlink with the external world, needle handle 12 lower ends of hollow needle 1 are fixed in solid nook closing member axle 32, the pin hole 13 of hollow needle 1 communicates with the endoporus of Connection Block pipe 23, the aperture of butt hole 34 is corresponding with the external diameter of Connection Block pipe 23, air-filtering membrane 4 is arranged on the bottom of butt hole 34, press mold sleeve pipe 5 is sleeved on solid nook closing member axle 32, air-filtering membrane 4 is pushed down in the lower end of press mold sleeve pipe 5, needle cannula 2 is sleeved on hollow needle 1 by protecting needle tubing 21, in the butt hole 34 that is sleeved on pin holder 3 by Connection Block pipe 23, and air-filtering membrane 4 is pushed down in the lower surface of Connection Block pipe 23, there is air inlet gap protecting between pin hole 25 and needle handle 12 external diameters, between the cylindrical of press mold sleeve pipe 5 and the cylindrical of Connection Block pipe 23, there is air inlet gap, in the upper end of press mold sleeve pipe 5, be provided with equably four end face air inlet ducts 51, steam vent 26 in needle cannula 2 is by protecting the air inlet gap having between pin hole 25 and needle handle 1 external diameter, the end face air inlet duct 51 of press mold sleeve pipe 5 upper ends, the air inlet gap having between press mold sleeve pipe 5 cylindricals and Connection Block pipe 23 cylindricals and air-filtering membrane 4 interlink with the end face venthole 35 of pin holder 3, they have formed axial exhaust ducts, when the present invention is arranged on when extracting liquid pharmaceutical on syringe and dissolving to the fluid injection of powder body medicine bottle, first by hollow needle 1, the needle tubing 21 that protects together with needle cannula 2 epimeres enters in bottle, the push rod of pushing syringe, liquid in syringe just sprays from the liquid outlet 11 of hollow needle 1 epimere.
Embodiment 2: on the basis of embodiment 1, press mold sleeve pipe 5 removed, realized equally axial exhaust,
Embodiments of the present invention are a lot, as long as all schemes of offering vertically exhaust passage are all within protection scope of the present invention.
Claims (5)
1. an end face exhausting low resistance medicine feeding needle, it is characterized in that: comprise hollow needle (1), needle cannula (2), pin holder (3), air-filtering membrane (4) and press mold sleeve pipe (5), described needle cannula (2) comprises protects needle tubing (21) and Connection Block pipe (23), protect the top that needle tubing (21) is arranged on Connection Block pipe (23), in the side of protecting needle tubing (21), be provided with steam vent (26), described pin holder (3) is by the upper connecting base being coaxially set (31), Gu nook closing member axle (32) and syringe Connection Block (33) form, Gu nook closing member axle (32) is arranged on the center of the butt hole (34) of upper connecting base (31), syringe Connection Block (33) is arranged on the lower end of upper connecting base (31), in the bottom of butt hole (34), be provided with the end face venthole (35) interlinking with the external world, the lower end of hollow needle (1) is fixed in solid nook closing member axle (32), the pin hole (13) of hollow needle (1) communicates with the endoporus of Connection Block pipe (23), in the bottom of butt hole (34), be provided with air-filtering membrane (4), air-filtering membrane (4) cover end face venthole (35) above, press mold sleeve pipe (5) is sleeved on solid nook closing member axle (32), in the upper end of press mold sleeve pipe (5), be provided with end face air inlet duct (51), air-filtering membrane (4) is pushed down in the lower surface of press mold sleeve pipe (5), needle cannula (2) is sleeved on the needle handle (12) of hollow needle (1) by protecting needle tubing (21), Connection Block pipe (23) is sleeved in the butt hole (34) of pin holder (3), air-filtering membrane (4) is pushed down in the lower surface of Connection Block pipe (23), steam vent (26) in needle cannula (2) interlinks with the end face venthole (35) of pin holder (3).
2. end face exhausting low resistance medicine feeding needle according to claim 1, it is characterized in that: the structure that steam vent (26) and end face venthole (35) interlink is: have air inlet gap protecting between pin hole (25) and needle handle (12) external diameter, between the cylindrical of press mold sleeve pipe (5) and the cylindrical of Connection Block pipe (23), there is air inlet gap, in the upper end of press mold sleeve pipe (5), be provided with end face air inlet duct (51), steam vent (26) in needle cannula (2) is by protecting the air inlet gap having between pin hole (25) and needle handle (1) external diameter, the end face air inlet duct (51) of press mold sleeve pipe (5) upper end, the air inlet gap having between press mold sleeve pipe (5) cylindrical and Connection Block pipe (23) cylindrical and air-filtering membrane (4) interlink with the end face venthole (35) of pin holder (3).
3. end face exhausting low resistance medicine feeding needle according to claim 1, is characterized in that: Gu the upper surface of nook closing member axle (32) is lower 3～6 millimeters than the upper surface of upper connecting base (31).
4. end face exhausting low resistance medicine feeding needle according to claim 1, is characterized in that: the quantity of described end face venthole (35) is more than 2.
5. end face exhausting low resistance medicine feeding needle according to claim 2, is characterized in that: in press mold sleeve pipe (5) upper end, be provided with equably 2～8 end face air inlet ducts (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310612571.6A CN103585688A (en) | 2013-11-26 | 2013-11-26 | End face exhausting type low-damping dosing needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310612571.6A CN103585688A (en) | 2013-11-26 | 2013-11-26 | End face exhausting type low-damping dosing needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103585688A true CN103585688A (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310612571.6A Pending CN103585688A (en) | 2013-11-26 | 2013-11-26 | End face exhausting type low-damping dosing needle |
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| CN (1) | CN103585688A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997510A (en) * | 2016-08-03 | 2016-10-12 | 深圳市库贝尔生物科技股份有限公司 | Puncture needle |
| CN106726564A (en) * | 2016-12-30 | 2017-05-31 | 浙江华福医用器材有限公司 | Molten medicine pin |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030236497A1 (en) * | 2002-06-25 | 2003-12-25 | Radiometer Medical A/S | Sampler cap |
| CN2832176Y (en) * | 2005-10-19 | 2006-11-01 | 王维文 | Injection drug feeder with improved structure |
| US20080142388A1 (en) * | 2006-12-19 | 2008-06-19 | Cardinal Health 303, Inc. | Pressure equalizing device for vial access |
| CN201127755Y (en) * | 2007-12-27 | 2008-10-08 | 山东新华安得医疗用品有限公司 | Disposable tube type medicine dispensing device |
| CN201304107Y (en) * | 2008-12-16 | 2009-09-09 | 孙世军 | Bushing dispensing device |
| CN203577040U (en) * | 2013-11-26 | 2014-05-07 | 江苏康友医用器械有限公司 | End-face exhaust low-damping dosing needle |
-
2013
- 2013-11-26 CN CN201310612571.6A patent/CN103585688A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030236497A1 (en) * | 2002-06-25 | 2003-12-25 | Radiometer Medical A/S | Sampler cap |
| CN2832176Y (en) * | 2005-10-19 | 2006-11-01 | 王维文 | Injection drug feeder with improved structure |
| US20080142388A1 (en) * | 2006-12-19 | 2008-06-19 | Cardinal Health 303, Inc. | Pressure equalizing device for vial access |
| CN201127755Y (en) * | 2007-12-27 | 2008-10-08 | 山东新华安得医疗用品有限公司 | Disposable tube type medicine dispensing device |
| CN201304107Y (en) * | 2008-12-16 | 2009-09-09 | 孙世军 | Bushing dispensing device |
| CN203577040U (en) * | 2013-11-26 | 2014-05-07 | 江苏康友医用器械有限公司 | End-face exhaust low-damping dosing needle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105997510A (en) * | 2016-08-03 | 2016-10-12 | 深圳市库贝尔生物科技股份有限公司 | Puncture needle |
| CN106726564A (en) * | 2016-12-30 | 2017-05-31 | 浙江华福医用器材有限公司 | Molten medicine pin |
| CN106726564B (en) * | 2016-12-30 | 2023-09-22 | 浙江华福医用器材有限公司 | Medicine dissolving needle |
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Application publication date: 20140219 |
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