CN108714107B - Configuration needle and configuration device with air pressure balance function - Google Patents
Configuration needle and configuration device with air pressure balance function Download PDFInfo
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- CN108714107B CN108714107B CN201810079440.9A CN201810079440A CN108714107B CN 108714107 B CN108714107 B CN 108714107B CN 201810079440 A CN201810079440 A CN 201810079440A CN 108714107 B CN108714107 B CN 108714107B
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- 238000009423 ventilation Methods 0.000 claims abstract description 69
- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000001914 filtration Methods 0.000 claims description 55
- 239000012528 membrane Substances 0.000 claims description 52
- 238000001179 sorption measurement Methods 0.000 claims description 15
- 238000001746 injection moulding Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 239000003814 drug Substances 0.000 abstract description 40
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 36
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 229940079593 drug Drugs 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000008093 supporting effect Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000001802 infusion Methods 0.000 description 5
- 239000000443 aerosol Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 229930182555 Penicillin Natural products 0.000 description 2
- JGSARLDLIJGVTE-MBNYWOFBSA-N Penicillin G Chemical compound N([C@H]1[C@H]2SC([C@@H](N2C1=O)C(O)=O)(C)C)C(=O)CC1=CC=CC=C1 JGSARLDLIJGVTE-MBNYWOFBSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229940049954 penicillin Drugs 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
- A61J1/2003—Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
- A61J1/2006—Piercing means
- A61J1/201—Piercing means having one piercing end
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a configuration needle with an air pressure balance function and a configuration device, wherein the configuration needle comprises: a needle head and a needle seat; the needle head is internally provided with a double-cavity channel for ventilation and liquid ventilation respectively; an upper hole close to the needle point part and a lower hole close to the needle seat part are arranged in the ventilation channel, and a liquid through hole is arranged in the liquid through channel; the needle seat is provided with a needle seat interface corresponding to the lower side hole at the position where the needle seat is matched and connected with the needle head, and the needle seat interface is used for enabling the ventilation channel to be communicated with the outside through the needle seat interface. The configuration needle with the air pressure balance function can avoid the formation of positive and negative air pressure by arranging the ventilation channel and the liquid ventilation channel which are mutually isolated in the needle head, and improves the speed and the reliability of the medicine configuration operation.
Description
The present application claims priority from the chinese patent office, application number 201720601617.8, entitled "a deployment needle and deployment device with air pressure balancing functionality", filed on 26 months 2017, the entire contents of which are incorporated herein by reference.
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a configuration needle with an air pressure balance function and a configuration device.
Background
Currently, in the use of sealed containers of medicines, for example: when the penicillin bottle is used for preparing liquid, the used configuration needle is of a general single-cavity/single-hole structure. When the solvent is injected into the sealed container (e.g. penicillin bottle), the single-cavity/single-hole needle structure can generate positive pressure in the sealed container to prevent the solvent from being injected smoothly, and meanwhile, liquid/aerosol splashes can cause harm to operators and personnel in the space when the needle is pulled out. In addition, when the dissolved chemical solution is extracted from the sealed container using the single lumen/single hole needle, negative pressure is generated in the sealed container, making it difficult to extract the chemical solution and deteriorating the working efficiency. Accordingly, the inventors have found in the course of implementing the present application that the prior art has at least the following drawbacks: the currently used configuration needle is easy to obstruct injection or extraction operation due to positive pressure or negative pressure when extracting or injecting medicines in the sealed container, and even can bring harm to related personnel and cause waste of medicine liquid.
Disclosure of Invention
Accordingly, the present utility model is directed to a needle and a device with an air pressure balancing function, which can balance the air pressure between a sealed container and the external environment, eliminate the positive pressure or negative pressure generated by the injection or extraction operation, improve the efficiency and safety of the drug dispensing operation, and avoid the waste of the drug.
Based on the above object, the present utility model provides a deployment needle with air pressure balancing function, comprising: a needle head and a needle seat; the needle head is internally provided with a double-cavity channel for ventilation and liquid ventilation respectively; an upper hole close to the needle point part and a lower hole close to the needle seat part are arranged in the ventilation channel, and a liquid through hole is arranged in the liquid through channel; the needle seat is provided with a needle seat interface corresponding to the lower side hole at the position where the needle seat is matched and connected with the needle head, and the needle seat interface is used for enabling the ventilation channel to be communicated with the outside through the needle seat interface.
Optionally, the hub interface is connected with an external gas collection device.
Optionally, a ventilation groove is arranged at the position where the lower hole is connected with the needle seat interface in a matching way, a filtering membrane is arranged in the ventilation groove, and a gap is formed between the filtering membrane and the needle body; the filtering membrane is used for filtering the gas flowing in or out of the ventilation channel; wherein, the needle body is an integral structure formed by the needle stand and the needle head.
Optionally, the deployment needle further comprises a harmful gas adsorption filter; the harmful gas adsorption filter is arranged between the filtering membrane and the needle seat interface and is used for absorbing harmful gas.
Optionally, the outlet position of the harmful gas adsorption filter or the needle seat interface is also connected with a harmful gas collecting device for collecting the discharged harmful gas.
Optionally, a filtering membrane supporting structure can be disposed in the ventilation groove, and is used for supporting and protecting the filtering membrane.
Alternatively, the ventilation groove can also be arranged on the filter membrane protection cover. Namely, the interface of the lower side hole and the needle seat is in a through hole structure, and the filtering membrane protecting cover is in a groove structure; and a filtering membrane is arranged in the groove of the filtering membrane protective cover.
Optionally, a filtering membrane supporting structure may be disposed inside the filtering membrane protecting cover groove, for supporting and protecting the filtering membrane.
Optionally, the filtration membrane is a hydrophobic, breathable membrane.
Optionally, the filtering membrane is circumferentially arranged on the outer side of the needle body, and a circumferential ventilation groove is formed between the filtering membrane and the needle body.
Optionally, a shield is further arranged on the outer side of the filtering membrane and used for protecting the filtering membrane.
Optionally, the guard shield is the drum type structure of side fretwork for provide support and ventilation effect.
Optionally, the dual-cavity channel in the needle is formed by injection molding, for injecting the core into the needle and separating the vent channel from the liquid channel by the core.
Optionally, the needle body is of an elliptical design.
The application also provides a configuration device which comprises the configuration needle with the air pressure balancing function.
From the above, it can be seen that the configuration needle with air pressure balancing function provided by the present utility model is provided with a double-cavity passage by arranging the needle head portion, one for ventilation and one for ventilation, and then upper and lower side holes are respectively arranged at both ends of the ventilation passage for ventilation. Therefore, when medicine is extracted or injected, the medicine bottle can be communicated with the outside, so that the problem of positive and negative pressure is avoided, the efficiency and the safety of medicine configuration are improved, and medicine residues or splashing are avoided. In addition, the channel for ventilation and the channel for ventilation are mutually separated, so that the extraction or injection operation of the medicine is not affected at all, the corresponding liquid medicine and the gas medicine can be separated, and the safety and reliability of medicine configuration are improved. Therefore, the configuration needle with the air pressure balancing function can avoid the formation of positive and negative air pressure, and the speed and the reliability of medicine configuration operation are improved.
Drawings
FIG. 1 is a schematic view of a first embodiment of a deployment needle with air pressure balancing function according to the present utility model;
FIG. 1a is a schematic cross-sectional view of one embodiment of a needle tip provided in the present utility model;
FIG. 1b is a schematic cross-sectional view of another embodiment of a needle tip provided by the present utility model;
FIG. 2 is a schematic diagram of a configuration of a second embodiment of a deployment needle with air pressure balancing function according to the present utility model;
fig. 3 is a schematic view of a partial structure of a ventilation groove corresponding to a needle seat provided by the utility model;
FIG. 4 is a schematic view of a partial structure of a filtering membrane corresponding to a needle seat provided by the utility model;
fig. 5 is a schematic view of a partial structure of a shield corresponding to a needle seat provided by the utility model;
FIG. 6 is a schematic view of a third embodiment of a deployment needle with air pressure balancing function according to the present utility model;
FIG. 7 is a schematic view of a fourth embodiment of a configuration needle with air pressure balancing function according to the present utility model;
FIG. 8 is a partial cross-sectional view of one embodiment of an injection molded core provided by the present utility model;
FIG. 9 is a partial cross-sectional view of another embodiment of an injection molded core provided by the present utility model;
FIG. 10 is a schematic view of a fifth embodiment of a configuration needle with air pressure balancing function according to the present utility model;
FIG. 11 is a schematic view of a sixth embodiment of a configuration needle with air pressure balancing function according to the present utility model;
FIG. 11a is a schematic cross-sectional view of a third embodiment of a needle tip in accordance with the present utility model;
FIG. 12 is a schematic view of a seventh embodiment of a configuration needle with air pressure balancing function according to the present utility model;
fig. 13 is a schematic structural view of an eighth embodiment of a deployment needle with air pressure balancing function according to the present utility model.
Detailed Description
The present utility model will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present utility model more apparent.
It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.
This application is directed at the problem that appears positive negative pressure easily when the configuration medicine at present, proposes an improved structure for can be smoothly pour into the solvent into in the sealed container or outwards draw the balanced inside and outside atmospheric pressure in the liquid medicine from the sealed container, prevent that the atmospheric pressure is too big in the container from leading to aerosol/liquid to sputter outside along with the syringe needle when extracting, personnel's safety improves work efficiency simultaneously in the protection operating space.
Referring to fig. 1, a schematic structural diagram of a first embodiment of a deployment needle with air pressure balancing function according to the present utility model is shown. The configuration needle with the air pressure balancing function comprises: a needle 1 and a needle holder 2; the needle head 1 is internally provided with a double-cavity channel for ventilation and liquid ventilation respectively; an upper hole 11 close to the needle point part and a lower hole 12 close to the needle seat part are arranged in the ventilation channel, and a liquid through hole 13 is arranged in the liquid through channel; the needle seat 2 is provided with a needle seat interface 21 corresponding to the lower hole 12 at the position matched and connected with the needle head 1, and the ventilation channel is communicated with the outside through the needle seat interface 21. Wherein, the syringe needle optional adopts steel double-lumen pipe. The upper side hole 11 and the lower side hole 12 may be disposed on the same straight line, or may be disposed not on the same straight line to form a certain dislocation according to need. The positions of the upper side hole 11 and the lower side hole 12 can be correspondingly adjusted according to the needs, so that the upper side hole 11 is positioned in the bottle and the lower side hole 12 is positioned outside the bottle when the needle is inserted into the medicine bottle. Thus, the air pressure inside and outside the medicine bottle can be balanced through the ventilation channel, and the medicine can be extracted or injected through the liquid ventilation channel.
As can be seen from the above embodiments, the configuration needle with air pressure balancing function is provided with a double-cavity channel on the needle head 1, one for ventilation and one for ventilation, and then upper side holes 11 and lower side holes 12 are respectively provided at both ends of the ventilation channel for ventilation. Therefore, when medicine is extracted or injected, the medicine bottle can be communicated with the outside, so that the problem of positive and negative pressure is avoided, the efficiency and the safety of medicine configuration are improved, and medicine residues or splashing are avoided. In addition, the channel for ventilation and the channel for ventilation are mutually separated, so that the extraction or injection operation of the medicine is not affected at all, the corresponding liquid medicine and the gas medicine can be separated, and the safety and reliability of medicine configuration are improved. Therefore, the configuration needle with the air pressure balancing function can avoid the formation of positive and negative air pressure, and the speed and the reliability of medicine configuration operation are improved.
In some alternative embodiments of the present application, the hub interface is coupled to an external gas collection device. Thus, when the medicine is a toxic substance, the corresponding toxic gas can be collected or filtered through the gas collecting device in time. Preventing toxic drug from leaking. Meanwhile, the gas can be collected to avoid pollution of the gas in the bottle to some special environments, and the safety is improved.
Alternatively, the gas collection device may be a filter capsule.
In some alternative embodiments of the present application, the hub 2 is partially injection molded.
In some alternative embodiments of the present application, the filtration membrane employs a hydrophobic, breathable membrane. Thus, ventilation and filtration can be integrated, solvent, liquid medicine, aerosol and the like are prevented from flowing out from the needle head side, but air circulation is not hindered, and the device is particularly suitable for the configuration process of toxic medicines, and improves the safety of medicine configuration and the waste treatment efficiency.
Referring to fig. 1a and 1b, there are shown schematic cross-sectional configurations of two different needle structures, respectively. According to the figure, the partition plates between the two channels in the needle head can be arranged at different positions according to actual needs, so that the channel sizes or the proportion of occupied channel sizes of the two channels in the needle head are different, and the ventilation and liquid ventilation effects can be changed.
Referring to fig. 2, a schematic structural diagram of a second embodiment of the deployment needle with air pressure balancing function according to the present utility model is shown. A ventilation groove is formed in the position where the lower hole 12 is connected with the needle seat interface in a matching way, a filtering membrane 3 is arranged in the ventilation groove, and a gap is formed between the filtering membrane 3 and the needle body; the filtering membrane 3 is used for filtering the gas flowing in or out of the ventilation channel; wherein, the needle body is an integral structure formed by the needle stand 2 and the needle head 1. That is, the space of the hub interface position is enlarged to one ventilation groove, so that the filtering membrane 3 can be added into the ventilation groove, and also so that the ventilation groove portion between the filtering membrane 3 and the needle body has a sufficient ventilation clearance. Thus, the ventilation of air is facilitated, the filtering area of the filtering membrane can be increased, and the ventilation of air is smoother.
Referring to fig. 3, a schematic partial structure of a ventilation groove corresponding to a needle seat provided by the utility model is shown. As can be seen, the ventilation groove 22 is a groove structure with larger space and communicated with the lower side hole, and the ventilation groove 22 is formed by depending on the needle seat.
The specific shape of the hole is not limited in this application, and may be a circular or oval structure.
Referring to fig. 4, a schematic diagram of a partial structure of a filtering membrane corresponding to a needle seat provided by the utility model is shown. The filtering membrane 3 is arranged on the outer side of the needle body in a surrounding mode, and a surrounding ventilation groove is formed between the filtering membrane 3 and the needle body. Thus, the filtering membrane 3 can fully utilize the ventilation grooves, and the filtering area is increased.
Referring to fig. 5, a schematic partial structure of a shield for a needle holder according to the present utility model is shown. The outside of the filtering membrane is also provided with a shield 4 for protecting the filtering membrane. Referring to fig. 3, the needle holder is provided with a shield locking groove 23 for mounting the shield 4. Like this, protect filtering membrane 3 can not appear crackle or break because of deformation is great at the in-process of ventilating through guard shield 4 to give filtering membrane 3 with pressure, guarantee filtering membrane and needle file 2 can not break away from, improve structural stability.
Further, the shield 4 is a drum-shaped structure with hollowed-out side surface, and is used for providing supporting and ventilation effects. Therefore, the filtering membrane can be pressed in an auxiliary way, and good sealing between the filtering membrane and the needle seat is ensured; and the hollowed-out parts can enable air to circulate normally, and other parts which are not hollowed-out can have a good supporting effect on the filtering membrane.
Referring to fig. 6, a schematic structural diagram of a third embodiment of a deployment needle with air pressure balancing function according to the present utility model is shown. The double-cavity channel in the needle is formed by injection molding, and is used for injecting the core body 5 into the needle and separating the ventilation channel and the liquid ventilation channel through the core body. Therefore, the cost and the processing difficulty can be reduced, and the process is more reasonable and is more suitable for wide application.
Referring to fig. 7, a schematic diagram of a configuration of a fourth embodiment of a configuration needle with air pressure balancing function according to the present utility model is shown. The needle body adopts an elliptic design. By doing so, the processing technology is simpler, and the cost is reduced. The core 5 can be adjusted to the corresponding injection molding shape according to the requirement, so as to form a ventilation channel 14, a ventilation channel 15 and corresponding ventilation and ventilation holes.
Referring to fig. 8, a partial cross-sectional view of an injection molded core provided by the present utility model is shown. The core body can isolate the desired passage in the needle. Referring to fig. 9, another injection molded core structure is shown. As can be seen from comparing fig. 8 and 9, the shape of the outer portion of the needle can be either elliptical or circular, and the different channels formed in the core can be adjusted accordingly as required.
In another aspect of the present application, there is also provided a deployment device comprising a deployment needle with an air pressure balancing function as described in any of the embodiments above. For example: the configuration device is a syringe with the configuration needle, a consumable with the configuration needle, a dispensing machine with the configuration needle, a split charging machine with the configuration needle and the like.
Referring to fig. 10, 11 and 12, there are shown schematic structural views of three other embodiments of the arrangement needle. Fig. 11a is a schematic view of a corresponding further needle cross section.
Referring to fig. 13, a schematic structural diagram of an eighth embodiment of a configuration needle with air pressure balancing function according to the present utility model is shown. On the one hand, according to a statistics about infusion reactions, exceeding of the number of particles in the liquid medicine and incomplete gas elimination in the liquid medicine during infusion are two important factors causing infusion reactions, and these two factors account for 40% of all factors. On the other hand, mixing of fine particles in the air during the dispensing process, rubber stopper scraps, glass scraps, undissolved powder medicines, flocculent precipitate generated by the medicine liquid itself, and the like. Wherein particles above 4 μm cause damage to the human body to different degrees. In addition, in the traditional configuration needle for preparing tumor drugs and toxic drugs, toxic and harmful gases, aerosols and liquids are sprayed into the configuration space for example, which can cause a certain amount of injury to configuration personnel. Therefore, the removal of harmful substances in the infusion and dispensing process is particularly important, and an improvement scheme is provided for the infusion and dispensing process. As can be seen from fig. 13, the deployment needle further comprises a harmful gas adsorption filter 6; the harmful gas adsorption filter 6 is arranged between the filtering membrane 3 and the needle seat interface, and the harmful gas adsorption filter 6 is used for absorbing harmful gas. It should be noted that, in the drawing, the harmful gas adsorption filter 6 may be disposed between the filtering membrane 3 and the hub interface, or the outlet of the harmful gas adsorption filter 6 may be directly used as the hub interface, so long as the adsorption of the harmful gas in the gas channel 14 is increased, the concept of the present application is included, and the specific connection structure and position are not limited in the present application.
Further, in view of the problem that the harmful gas adsorption filter 6 may have a large volume, the present application further uses a filter base 7 as a supporting and sealing member of the harmful gas adsorption filter 6, so that not only the contact area with the harmful gas can be enlarged, but also the filtering efficiency of the harmful gas can be greatly improved. Furthermore, as can be seen from the figures, the deployment needle described herein can be provided on the syringe 8 as a needle portion of the syringe, so that the adsorption of harmful gases can be achieved during injection.
Preferably, the outlet of the harmful gas adsorption filter or the needle holder interface is further connected to a harmful gas collecting device, not shown, for collecting the discharged harmful gas. The harmful gas collecting device can be any available collecting and accommodating device, can mainly accommodate and collect the discharged harmful gas, and can be removed to a specific place for discarding or recycling.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the disclosure, including the claims, is limited to these examples; combinations of features of the above embodiments or in different embodiments are also possible within the idea of the utility model, and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present utility model should be included in the scope of the present utility model.
The embodiments of the utility model are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present utility model should be included in the scope of the present utility model.
Claims (8)
1. A deployment needle with air pressure balancing function, comprising: a needle head and a needle seat; the needle head is internally provided with a double-cavity channel for ventilation and liquid ventilation respectively; an upper hole close to the needle point part and a lower hole close to the needle seat part are arranged in the ventilation channel, and a liquid through hole is arranged in the liquid through channel; the needle seat is provided with a needle seat interface corresponding to the lower side hole at the position where the needle seat is matched and connected with the needle head, and the needle seat interface is used for enabling the ventilation channel to be communicated with the outside through the needle seat interface;
the lower hole is provided with a ventilation groove at the position matched and connected with the needle seat interface, a filtering membrane is arranged in the ventilation groove, and a gap is formed between the filtering membrane and the needle body; the filtering membrane is used for filtering the gas flowing in or out of the ventilation channel; wherein, the needle body is an integral structure formed by the needle stand and the needle head;
the filtering membrane is arranged on the outer side of the needle body in a surrounding mode, and a surrounding ventilation groove is formed between the filtering membrane and the needle body;
the needle seat interface is connected with an external gas collecting device.
2. The deployment needle with the air pressure balancing function of claim 1, further comprising a harmful gas adsorption filter; the harmful gas adsorption filter is arranged between the filtering membrane and the needle seat interface and is used for absorbing harmful gas.
3. The deployment needle with the air pressure balancing function of claim 1, wherein the filtering membrane is a hydrophobic, breathable membrane.
4. The deployment needle with the air pressure balancing function according to claim 1, wherein a shield is further provided on the outside of the filtering membrane for protecting the filtering membrane.
5. The deployment needle with air pressure balancing function of claim 4, wherein the shield is a barrel-shaped structure hollowed out laterally for providing support and ventilation.
6. The deployment needle with air pressure balancing function of claim 1, wherein the dual-chamber channel in the needle is formed by injection molding for injecting the core into the needle interior and separating the vent channel from the liquid channel by the core.
7. The deployment needle with air pressure balancing function of claim 1, wherein the needle body is of an elliptical design.
8. A deployment device comprising a deployment needle with air pressure balancing function according to any one of claims 1-7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720601617 | 2017-05-26 | ||
| CN2017206016178 | 2017-05-26 |
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| CN108714107A CN108714107A (en) | 2018-10-30 |
| CN108714107B true CN108714107B (en) | 2024-02-09 |
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| CN201810079440.9A Active CN108714107B (en) | 2017-05-26 | 2018-01-26 | Configuration needle and configuration device with air pressure balance function |
| CN201820137107.4U Active CN208958787U (en) | 2017-05-26 | 2018-01-26 | A kind of configuration pin and configuration device with function of balancing air pressure |
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| CN201820137107.4U Active CN208958787U (en) | 2017-05-26 | 2018-01-26 | A kind of configuration pin and configuration device with function of balancing air pressure |
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| CN108714107B (en) * | 2017-05-26 | 2024-02-09 | 信远德怡医疗科技（北京）有限公司 | Configuration needle and configuration device with air pressure balance function |
| CN111012663B (en) * | 2019-12-20 | 2022-07-15 | 山西医科大学 | Liquid medicine transfer adapter |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108714107A (en) | 2018-10-30 |
| CN208958787U (en) | 2019-06-11 |
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Inventor after: He Yuan Inventor after: Liu Shuchun Inventor after: Huang Jianzhong Inventor after: Ma Zhuqing Inventor after: Liu Weiwei Inventor after: Wang Yanyu Inventor before: He Yuan Inventor before: Liu Shuchun Inventor before: Huang Jianzhong Inventor before: Ma Zhuqing Inventor before: Liu Weiwei Inventor before: Wang Yanyu |
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