CN215082279U - Dispensing needle head with rubber particle prevention function - Google Patents
Dispensing needle head with rubber particle prevention function Download PDFInfo
- Publication number
- CN215082279U CN215082279U CN202120449067.9U CN202120449067U CN215082279U CN 215082279 U CN215082279 U CN 215082279U CN 202120449067 U CN202120449067 U CN 202120449067U CN 215082279 U CN215082279 U CN 215082279U
- Authority
- CN
- China
- Prior art keywords
- needle
- sleeve
- sliding square
- sliding
- needle head
- 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
Links
- 239000002245 particle Substances 0.000 title claims abstract description 27
- 230000002265 prevention Effects 0.000 title claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000003780 insertion Methods 0.000 claims abstract description 7
- 230000037431 insertion Effects 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 239000003814 drug Substances 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 2
- 230000003449 preventive effect Effects 0.000 claims 3
- 238000004891 communication Methods 0.000 abstract description 2
- 239000003708 ampul Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000007704 transition Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000001802 infusion Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 241001411320 Eriogonum inflatum Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 239000003978 infusion fluid Substances 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Abstract
The utility model discloses a dispensing needle head with rubber particle prevention function, which comprises an insertion cylinder, a sliding square cylinder and a needle sleeve; the needle head mechanism comprises a puncture needle and a sliding square block, the puncture needle comprises a needle head and a hollow hole, the puncture needle is provided with a side hole, the top of the needle sleeve is provided with a bevel part, the needle sleeve is provided with an overflowing cavity, and when the needle head retracts into the needle sleeve, liquid flows into the hollow hole from the opening of the needle sleeve through the overflowing cavity and the side hole in sequence; the sliding square block is provided with a communication hole, a compression spring is arranged between the sliding square block and the sliding square tube, and the side surfaces of the sliding square block and the sliding square tube are provided with positioning mechanisms. Through the arrangement, the pricking needle can form a conical shape with the groove part after stretching out of the needle sleeve and being positioned by the positioning mechanism, so that the pricking needle can be better inserted into the rubber plug, and after the inserting and the releasing of the positioning mechanism are carried out, the needle retracts into the needle sleeve by pressing the whole device, and the liquid in the container can be conveniently sucked completely.
Description
Technical Field
The utility model relates to the field of medical supplies, specifically be a syringe needle that dispenses with rubber particle prevention function.
Background
Qin beauty, Shang Yue' e, et al, in their article, "study on the use of side-bore needles to reduce contamination of rubber stopper particles in infusion solutions" mention the following:
intravenous infusion is the most widely used mode of administration in the clinic. When a medicine is added into an infusion bottle, the rubber stopper falls off to generate insoluble particles due to the fact that the needle head of the medicine dissolving syringe punctures the bottle stopper for multiple times, which is an important factor for causing the pollution of infusion particles.
The result of statistical treatment shows that P is less than 0.01, the side hole needle is obviously lower than the bevel needle, and the detection results of the two particles of the side hole needle both accord with the regulations of Chinese pharmacopoeia. The side hole needle has the advantages that the influence of the powder injection medicine and the number of particles in the air is eliminated, the number of insoluble particles generated by puncturing a rubber plug to dissolve the medicine and adding the medicine by the side hole needle injector is obviously less than that of the side hole needle injector, and the side hole needle has higher clinical popularization value.
From the above, we can see that the side-hole needle is selected to effectively reduce the rubber particles in the liquid when dispensing. However, the conventional side-hole needle has the following problems: in the process of dispensing, need absorb the liquid medicine, but because the imbibition hole setting of side hole needle is in the syringe needle side, consequently be difficult to absorb the liquid medicine totally to certain waste has been caused.
In order to solve the problem, the application provides a dispensing needle with a rubber particle prevention function.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a syringe needle of dispensing with rubber particle prevention function pricks the needle and can form the toper form with the groove portion after stretching out the needle sleeve and fixing a position through positioning mechanism to in the middle of the better rubber buffer that inserts, after inserting and relieving positioning mechanism's connection, through pressing whole device, make the syringe needle retract into the needle sleeve, can be with the convenient absorption of the liquid in the container clean.
In order to achieve the above object, the utility model provides a following technical scheme: a dispensing needle with a rubber particle prevention function comprises an insertion cylinder connected with a syringe, wherein the insertion cylinder is connected with a sliding square cylinder, the sliding square cylinder is connected with a needle sleeve, and a needle mechanism is slidably connected in the sliding square cylinder and the needle sleeve;
the needle head mechanism comprises a puncturing needle in sealed sliding connection with the needle sleeve and a sliding square block in sealed sliding connection with the sliding square barrel, the puncturing needle comprises a needle head and a hollow hole, a side hole is formed in the side face, close to the needle head, of the puncturing needle, a bevel part which forms a conical shape with the needle head is arranged at the top of the needle sleeve, an overflowing cavity is formed in one side, close to the opening, of the inner wall of the needle sleeve, and when the needle head retracts into the needle sleeve, liquid medicine flows into the hollow hole through the overflowing cavity and the side hole in sequence from the opening of the needle sleeve;
be provided with the intercommunication on the slip square the cavity hole with the intercommunicating pore of slip square tube inner space, the slip square with be provided with between the slip square tube and make the syringe needle stretches out the telescopic compression spring of needle, the slip square with the side of slip square tube is provided with positioning mechanism.
Through the technical scheme, when the liquid medicine of the container with the rubber plug needs to be extracted, the sliding square block and the sliding square barrel are fixed through the positioning mechanism, so that the needle head and the bevel part form a smooth transition conical shape, the needle head and the bevel part can be easily pricked into the rubber plug, the generation of rubber particles is avoided, and after the needle head is inserted and the liquid needs to be extracted, the positioning mechanism is only required to be released and the whole device is pressed, so that the needle head is retracted into the needle sleeve, and the liquid medicine can be normally extracted; when the liquid medicine in the ampoule bottle needs to be extracted, the positioning mechanism is only required to be released, the needle head is abutted against the bottom of the ampoule bottle, pressure is applied to the needle head so that the needle head retracts into the needle sleeve, and then the liquid medicine is normally absorbed; from the above, we can see that the needle and the bevel part in the device are smoothly transited in the process of inserting the rubber plug, so that no rubber particles are formed, and the device has good prevention effect on the rubber particles; simultaneously, this syringe needle can be applicable to ampoule and the container that has the rubber buffer simultaneously, has good application range, and when absorbing the liquid medicine, in the syringe needle can retract to the needle sleeve to can ensure that the liquid medicine can be adsorbed totally.
Preferably, a sealing ring is arranged between the sliding square block and the sliding square cylinder.
Through above-mentioned technical scheme, the sealing performance between the two can be improved to the sealing washer.
Preferably, the positioning mechanism comprises two corresponding positioning holes arranged on the side surfaces of the sliding square block and the sliding square tube, the positioning holes are inserted with positioning pins, and when the positioning pins are inserted with the two positioning holes, the needle head just extends out of the needle sleeve and forms a conical shape with the bevel part.
Through above-mentioned technical scheme, through the setting of locating pin and two locating holes, can ensure to realize the relative fixation of the two to guarantee syringe needle and bevel portion form smooth transition's cone shape, and then better prick into in the middle of the rubber buffer.
Preferably, the insertion end of the positioning pin is provided with a guide groove.
Through the technical scheme, the positioning pin can be more conveniently inserted into the positioning hole through the guide groove.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the needle head can be simultaneously suitable for an ampoule bottle and a container with a rubber plug, has a good application range, and can retract into the needle sleeve when absorbing liquid medicine, so that the liquid medicine can be completely absorbed;
(2) the needle head and the bevel part in the device are smoothly transited in the process of inserting the rubber plug, so that rubber particles are not formed, and a good prevention effect of the rubber particles is achieved;
(3) the setting of locating pin and two locating holes can ensure to realize the relative fixation of the two to guarantee syringe needle and bevel portion form smooth transition's cone shape, and then better prick into in the middle of the rubber buffer.
Drawings
Fig. 1 is a schematic front structural view of the present invention;
FIG. 2 is a schematic view of the internal cross-sectional structure of the present invention with the needle extended;
FIG. 3 is a schematic view of a part of the enlarged structure of A in FIG. 2;
fig. 4 is a schematic view of the internal cross-sectional structure of the present invention when the needle is retracted.
In the figure: 1. a plug-in barrel; 2. sliding the square tube; 3. a needle hub; 4. inserting a needle; 401. a needle head; 402. a hollow bore; 403. a side hole; 5. sliding the square block; 6. a bevel portion; 7. a flow-through chamber; 8. a communicating hole; 9. a compression spring; 10. a seal ring; 11. positioning holes; 12. positioning pins; 13. and (4) guiding the groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides an embodiment:
the utility model provides a syringe needle that dispenses with rubber particle prevention function, includes the grafting section of thick bamboo 1 of being connected with the syringe, and grafting section of thick bamboo 1 is connected with slip square tube 2, and slip square tube 2 is connected with needle sleeve 3, and slip square tube 2 and 3 sliding connection in the needle sleeve have a syringe needle mechanism.
The needle head mechanism comprises a puncture needle 4 which is connected with the needle sleeve 3 in a sealing and sliding way and a sliding square 5 which is connected with the sliding square tube 2 in a sealing and sliding way. A sealing ring 10 is arranged between the sliding square 5 and the sliding square tube 2. The seal ring 10 can improve the sealing performance therebetween. The puncturing needle 4 comprises a needle head 401 and a hollow hole 402, a side hole 403 is arranged on the side face, close to the needle head 401, of the puncturing needle 4, a bevel part 6 which forms a conical shape with the needle head 401 is arranged at the top of the needle sleeve 3, an overflowing cavity 7 is arranged on one side, close to the opening, of the inner wall of the needle sleeve 3, and when the needle head 401 retracts into the needle sleeve 3, liquid flows into the hollow hole 402 from the opening of the needle sleeve 3 through the overflowing cavity 7 and the side hole 403 in sequence.
The sliding square 5 is provided with a communication hole 8 for communicating the hollow hole 402 with the inner space of the sliding square tube 2, a compression spring 9 for extending the needle head 401 out of the needle sleeve 3 is arranged between the sliding square 5 and the sliding square tube 2, and the side surfaces of the sliding square 5 and the sliding square tube 2 are provided with positioning mechanisms.
The positioning mechanism comprises two corresponding positioning holes 11 arranged on the side surfaces of the sliding square block 5 and the sliding square tube 2, positioning pins 12 are inserted into the positioning holes 11, and when the positioning pins 12 are inserted into the two positioning holes 11, the needle head 401 just extends out of the needle sleeve 3 and forms a conical shape with the bevel part 6. Through the setting of locating pin 12 and two locating holes 11, can ensure to realize the relative fixation of the two to guarantee syringe needle 401 and bevel portion 6 form smooth transition's cone shape, and then better prick into in the middle of the rubber buffer. The insertion end of the positioning pin 12 is provided with a guide bevel 13. The positioning pin 12 can be more conveniently inserted into the positioning hole 11 through the guide groove 13.
The use process of the needle head is as follows:
1. when the liquid medicine of a container with a rubber plug needs to be extracted, the sliding square 5 and the sliding square barrel 2 are fixed through the positioning mechanism, so that the needle 401 and the bevel part 6 form a smooth-transition conical shape, the needle can be easily pricked into the rubber plug, the generation of rubber particles cannot be caused, after the needle is inserted, when the liquid needs to be extracted, the positioning mechanism is only required to be released and the whole device is pressed, so that the needle 401 retracts into the needle sleeve 3, and the liquid medicine can be normally extracted.
2. When the liquid medicine in the ampoule bottle needs to be extracted, the positioning mechanism is only required to be released, the needle head 401 is propped against the bottom of the ampoule bottle, pressure is applied, the needle head 401 retracts into the needle sleeve 3, and then the liquid medicine is normally sucked.
To sum up, the beneficial effects of the utility model are that: (1) the needle 401 can be simultaneously suitable for an ampoule bottle and a container with a rubber plug, has a good application range, and can be retracted into the needle sleeve 3 when absorbing liquid medicine, so that the liquid medicine can be completely absorbed; (2) since the needle 401 and the bevel part 6 in the device are smoothly transited in the process of inserting the rubber plug, no rubber particles are formed, thereby having good prevention effect of the rubber particles; (3) the setting of locating pin 12 and two locating holes 11 can ensure to realize the relative fixation of the two to ensure syringe needle 401 and bevel portion 6 and form smooth transition's cone shape, and then better prick in the middle of the rubber buffer.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. A dispensing needle head with a rubber particle prevention function is characterized in that: the syringe comprises an insertion tube (1) connected with a syringe, wherein the insertion tube (1) is connected with a sliding square tube (2), the sliding square tube (2) is connected with a needle sleeve (3), and a needle head mechanism is slidably connected in the sliding square tube (2) and the needle sleeve (3);
the needle head mechanism comprises a puncturing needle (4) in sealed sliding connection with the needle sleeve (3) and a sliding square block (5) in sealed sliding connection with the sliding square barrel (2), the puncturing needle (4) comprises a needle head (401) and a hollow hole (402), a side face, close to the needle head (401), of the puncturing needle (4) is provided with a side hole (403), the top of the needle sleeve (3) is provided with a bevel part (6) forming a conical shape with the needle head (401), one side, close to the opening, of the inner wall of the needle sleeve (3) is provided with a flow passing cavity (7), and when the needle head (401) retracts into the needle sleeve (3), liquid medicine flows into the hollow hole (402) through the flow passing cavity (7) and the side hole (403) in sequence from the opening of the needle sleeve (3);
be provided with the intercommunication on slip square (5) well casement (402) with intercommunicating pore (8) of slip square tube (2) inner space, be provided with between slip square (5) and slip square tube (2) and make syringe needle (401) stretch out compression spring (9) of needle sleeve (3), the side of slip square (5) with slip square tube (2) is provided with positioning mechanism.
2. A dispensing needle having a rubber particle preventive function according to claim 1, wherein: a sealing ring (10) is arranged between the sliding square block (5) and the sliding square tube (2).
3. A dispensing needle having a rubber particle preventive function according to claim 1, wherein: the positioning mechanism comprises two corresponding positioning holes (11) arranged on the side faces of the sliding square block (5) and the sliding square barrel (2), the positioning holes (11) are spliced with positioning pins (12), and when the positioning pins (12) are spliced with the two positioning holes (11), the needle head (401) just extends out of the needle sleeve (3) and forms a conical shape with the bevel part (6).
4. A dispensing needle having a rubber particle preventive function according to claim 3, wherein: the inserting end of the positioning pin (12) is provided with a guide groove (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120449067.9U CN215082279U (en) | 2021-03-02 | 2021-03-02 | Dispensing needle head with rubber particle prevention function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120449067.9U CN215082279U (en) | 2021-03-02 | 2021-03-02 | Dispensing needle head with rubber particle prevention function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215082279U true CN215082279U (en) | 2021-12-10 |
Family
ID=79339725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120449067.9U Expired - Fee Related CN215082279U (en) | 2021-03-02 | 2021-03-02 | Dispensing needle head with rubber particle prevention function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215082279U (en) |
-
2021
- 2021-03-02 CN CN202120449067.9U patent/CN215082279U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109620721A (en) | A kind of sterile automatic medicine dispensing device and its application method | |
| CN215082279U (en) | Dispensing needle head with rubber particle prevention function | |
| CN109200396A (en) | Needleless injection attachment device | |
| CN102205155A (en) | Doser for transfusion | |
| CN205494574U (en) | Novel needle head for muscle injection | |
| CN108744146A (en) | Anti- needle pierces remaining needle | |
| CN2930735Y (en) | Self-destroyed safety syringe | |
| CN209916692U (en) | Aseptic automatic dispensing device | |
| CN212854310U (en) | Anesthetic needle for general surgery department with reduced puncture times | |
| CN209771024U (en) | Low-residue safe self-destruction syringe | |
| CN209253818U (en) | A kind of anti-needle thorn remaining needle | |
| CN202069937U (en) | Drug adding device for infusion | |
| CN201283133Y (en) | Needle for dispensing | |
| CN2810627Y (en) | Safety syringe | |
| CN215938782U (en) | Multifunctional medical shunt | |
| CN215274550U (en) | Auxiliary medicine sucking rack for needle syringe | |
| CN215228242U (en) | Internal fistula puncture needle | |
| CN216934294U (en) | Self-destruction safety syringe | |
| CN215460235U (en) | Nested formula redissolution device | |
| CN210963393U (en) | Rubber isolation plug for disposable sterile syringe | |
| CN114904088B (en) | Needle protection device is got to remaining needle | |
| CN209996926U (en) | Bottle inserting needle for kinds of blood transfusion apparatus | |
| CN211658757U (en) | Double-layer steel needle medicine dissolving device | |
| CN216148750U (en) | High-capacity high-speed drainage medical infusion bridge tube | |
| CN214104564U (en) | Clinical novel puncture equipment of cardiovascular internal medicine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |