CN109908431B - Indwelling needle and infusion device - Google Patents
Indwelling needle and infusion device Download PDFInfo
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- CN109908431B CN109908431B CN201910278252.3A CN201910278252A CN109908431B CN 109908431 B CN109908431 B CN 109908431B CN 201910278252 A CN201910278252 A CN 201910278252A CN 109908431 B CN109908431 B CN 109908431B
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- needle
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- 238000001802 infusion Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 13
- 239000011148 porous material Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000013022 venting Methods 0.000 abstract description 2
- 239000008280 blood Substances 0.000 description 18
- 210000004369 blood Anatomy 0.000 description 18
- 238000002347 injection Methods 0.000 description 12
- 239000007924 injection Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 210000003462 vein Anatomy 0.000 description 8
- 230000036772 blood pressure Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000023555 blood coagulation Effects 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an indwelling needle and an infusion device, the indwelling needle comprises: puncture needle tube; the catheter assembly comprises a catheter body and a puncture catheter connected to one end of the catheter body, an opening is formed in one end, deviating from the puncture catheter, of the catheter body, a sealing piece for blocking the opening is arranged in an inner cavity of the catheter body, a fixing piece is further arranged at one end, deviating from the puncture catheter, of the sealing piece, the puncture needle tube is connected to the fixing piece, the sealing piece and the puncture catheter in a penetrating mode, an access tube is connected to the outer side wall of the catheter body, and the access tube is located between the sealing piece and the puncture catheter and communicated with the inner cavity of the catheter body; one end of the connecting pipe is connected with the access pipe, and the other end of the connecting pipe is connected with an exhaust cap which comprises a connecting sleeve connected with the connecting pipe and a breathable film connected with the connecting sleeve; and the liquid stopping clamp is connected to the connecting pipe and used for opening or closing the connecting pipe. Aims at providing a pressure-resistant self-venting indwelling needle.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an indwelling needle and an infusion device.
Background
The infusion refers to infusion of the injection into a human body through intravenous drip, an indwelling needle is needed to be used as a medium in the infusion process, a catheter and a puncture needle tube are penetrated into vein blood vessels together during use, after the catheter enters the blood vessels, the puncture needle tube is manually withdrawn, a flexible catheter coated on the outer wall of the puncture needle tube is reserved in the blood vessels for infusion, and the use of the indwelling needle can reduce pain caused by repeated puncture of the vein and is convenient for reducing the workload of medical staff. Because keep somewhere the needle before using need be with keeping somewhere the air in the needle and arrange, in order to solve above-mentioned problem, avoid medical personnel to appear in the operation in-process again and confused the condition, often can set up the ventilated membrane at the end of keeping somewhere the needle, this ventilated membrane air can pass through blood and can not pass through. The purpose of exhausting is achieved through the pressure of the blood of the human body, but in the prior art, only the indwelling needle suitable for 150PSI is needed, when the enhanced examination is needed, the injection speed is required to be high, the injection pressure is high, and the situation of incompressible pressure can occur in the common indwelling needle.
The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present application and is not intended to represent an admission that the foregoing is prior art.
Disclosure of Invention
The invention mainly aims to provide an indwelling needle, and aims to provide a pressure-resistant self-venting indwelling needle.
To achieve the above object, the present invention provides an indwelling needle comprising:
puncture needle tube;
The catheter assembly comprises a catheter body and a puncture catheter connected to one end of the catheter body, an opening is formed in one end, deviating from the puncture catheter, of the catheter body, a sealing piece for sealing the opening is arranged in an inner cavity of the catheter body, a fixing piece is further arranged at one end, deviating from the puncture catheter, of the sealing piece, the puncture needle tube is connected to the fixing piece, the sealing piece and the puncture catheter in a penetrating mode, an access tube is connected to the outer side wall of the catheter body, and the access tube is located between the sealing piece and the puncture catheter and is communicated with the inner cavity of the catheter body;
The connecting pipe is connected with one end of the access pipe, the other end of the connecting pipe is connected with an exhaust cap, and the exhaust cap comprises a connecting sleeve connected with the connecting pipe and a breathable film connected with the connecting sleeve; and
And the liquid stopping clamp is connected with the connecting pipe and used for opening or closing the connecting pipe.
In one embodiment of the application, the filtration pore size of the gas permeable membrane is 0.1 μm to 0.13 μm.
In an embodiment of the application, the exhaust cap further includes at least two supporting members, wherein both the supporting members are connected to the connecting sleeve, and the two supporting members are respectively abutted against two side surfaces of the breathable film.
In an embodiment of the application, the exhaust cap further comprises a stiffener connected to the outer sidewall of the connection sleeve.
In an embodiment of the application, the inner cavity of the pipe body is further provided with an annular protrusion, the outer side wall of the sealing element is provided with an annular clamping groove, and the annular protrusion is matched with the annular clamping groove.
In an embodiment of the application, the retaining needle further comprises a filter joint, one end of the filter joint is connected to the connecting pipe, and the other end of the filter joint is connected to the connecting sleeve in a threaded manner.
In an embodiment of the application, the outer wall of the filter joint is coated with an anti-slip rubber sleeve.
In one embodiment of the application, the access tube is at a 45 degree angle to the seal.
In an embodiment of the present application, the indwelling needle further includes an operating handle connected to an end of the puncture needle tube near the fixing member, and the operating handle is used for pulling out the puncture needle tube.
The application also provides an infusion device which comprises an infusion tube and an indwelling needle.
According to the technical scheme, the fixing piece is arranged in the inner cavity of the catheter assembly and used for fixing the sealing piece, so that the following effects are achieved: 1. after the puncture is completed, the puncture needle tube is required to be withdrawn, and the puncture needle tube is prevented from bringing out the sealing element together during withdrawal, so that the tightness of the sealing element is ensured; 2. after the puncture needle tube is withdrawn, blood flows into the indwelling needle to exhaust air in the indwelling needle, and as the blood has certain pressure, the fixing piece is arranged on one side of the sealing piece to prevent the sealing piece from being ejected out due to overlarge blood pressure; 3. when high-pressure drip injection is carried out, the injection pressure of the drip reaches 350PSI, and the ejection of the sealing element due to overlarge injection pressure is avoided, so that a good sealing effect is provided.
The other end of the connecting pipe is connected with the exhaust cap, and through directly setting up the exhaust cap, need not to set up other transmission parts for the exhaust speed has been accelerated, avoids appearing blood and stops the condition that the coagulation and stop up the needle of keeping somewhere to stop up in keeping somewhere for a long time in the needle. Specifically, when using puncture needle tubing, puncture into the vein through puncture needle tubing earlier, puncture catheter and puncture needle tubing enter into the vein together, withdraw from the other end of pipe body with puncture needle tubing this moment, leave puncture catheter in the vein, withdraw from behind the puncture needle tubing, because human blood pressure is greater than the pressure of air, so blood can enter into the needle of keeping somewhere, because the end of keeping somewhere the needle is provided with the ventilated membrane, the ventilated membrane can only let air pass through, along with the increase of blood, the air in the needle of keeping somewhere is slowly exhausted, after the air is exhausted, close the connecting pipe through the liquid stopping clamp, blood can't continue to enter into the needle of keeping somewhere this moment, only need to connect the liquid medicine this moment, then open the liquid stopping clamp, external pressure is greater than human blood pressure this moment, external pressure is pressed back into the human body with blood, thereby accomplish transfusion work. By adopting the technical scheme, the stability of the whole detained needle can be ensured when high-pressure injection is carried out, the situation that the detained needle is not pressure-resistant due to overlarge pressure is avoided, and the stability of the whole transfusion process is ensured. Meanwhile, the time for exhausting is reduced, the blood coagulation is avoided, the indwelling needle is prevented from being blocked, and a good environment is provided for subsequent transfusion.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an embodiment of an indwelling needle according to the present invention;
FIG. 2 is an enlarged view of a portion of the catheter assembly of FIG. 1;
Fig. 3 is an enlarged view of a portion of the exhaust cap of fig. 1.
Reference numerals illustrate:
| Reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | Remaining needle | 50 | Exhaust cap |
| 10 | Puncture needle tube | 51 | Connecting sleeve |
| 20 | Catheter assembly | 52 | Breathable film |
| 21 | Pipe body | 53a | Support member |
| 22 | Puncture catheter | 53b | Support member |
| 23 | Sealing element | 54 | Reinforcing rib |
| 24 | Fixing piece | 60 | Filter joint |
| 25 | Access pipe | 70 | Anti-skid rubber sleeve |
| 30 | Connecting pipe | 80 | Operating handle |
| 40 | Liquid stopping clamp | 26 | Annular protrusion |
| 231 | Annular clamping groove |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all the directional indicators in the embodiments of the present invention are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The present invention proposes an indwelling needle 100, the indwelling needle 100 comprising:
A puncture needle tube 10;
The catheter assembly 20, the catheter assembly 20 includes a tube body 21 and a puncture catheter 22 connected to one end of the tube body 21, one end of the tube body 21 facing away from the puncture catheter 22 is provided with an opening, a sealing member 23 for sealing the opening is arranged in an inner cavity of the tube body 21, one end of the sealing member 23 facing away from the puncture catheter 22 is also provided with a fixing member 24, the puncture needle tube 10 is connected to the fixing member 24, the sealing member 23 and the puncture catheter 22 in a penetrating way, an access tube 25 is connected to the outer side wall of the tube body 21, and the access tube 25 is positioned between the sealing member 23 and the puncture catheter 22 and is communicated with the inner cavity of the tube body 21;
A connection pipe 30, one end of the connection pipe 30 is connected to the access pipe 25, the other end of the connection pipe 30 is connected to an exhaust cap 50, and the exhaust cap 50 includes a connection sleeve 51 connected to the connection pipe 30 and a ventilation film 52 connected to the connection sleeve 51; and
A liquid stopper 40, the liquid stopper 40 being connected to the connection pipe 30 for opening or closing the connection pipe 30.
In the application, the puncture needle tube 10 is made of alloy materials, the contact end of the puncture needle tube 10 and the skin is a V-shaped sliding slope surface which forms an angle of 40-50 degrees with the horizontal plane, and the angle of the preferable V-shaped sliding slope surface is 45 degrees under the condition of ensuring the blood flow after puncture. The catheter body 21 is made of plastic, and the catheter body 21 made of plastic has larger elasticity and saves cost.
The puncture catheter 22 is connected at one end of the tube body 21, is connected in a clamping connection mode to ensure connection stability, prevents the puncture catheter 22 from falling off in the high-pressure infusion process and is dangerous, other connection modes, such as damping connection and the like, can be adopted according to design requirements, and the puncture catheter 22 is conveniently fixed in the early production stage. The end of the tube body 21 facing away from the puncture catheter 22 is provided with an opening which is arranged to facilitate the removal of the puncture needle tube 10 after the puncture is completed. A sealing member 23 is provided in the inner cavity of the tube body 21, and the sealing member 23 is used for sealing the opening, and after the puncture needle tube 10 is taken out, the sealing performance of the indwelling needle 100 is ensured.
The sealing element 23 is connected with the pipe body 21 in a damping connection mode, and the sealing element 23 is convenient to install or detach in a damping connection mode. The seal 23 is made of an elastic material and has a certain deformability. The sealing member 23 is kept away from puncture pipe 22's one end still is provided with mounting 24, adopts damping connection's mode to connect between mounting 24 and the pipe body 21, and is further, in order to guarantee the stability of connection, scribbles glue in the junction of mounting 24 and pipe body 21, further guarantees the stability of connection.
The center position of the fixing piece 24 is provided with a circular through hole for passing through the puncture needle tube 10, the circular through hole is arranged to facilitate the puncture needle tube 10 to pass through, friction between the fixing piece 24 and the puncture needle tube 10 is avoided, and the later puncture needle tube 10 is convenient to withdraw. The exhaust cap 50 is connected at the one end of connecting pipe 30, adopts threaded connection's mode to connect between exhaust cap 50 and the connecting pipe 30, adopts threaded connection's mode to connect, avoids exhaust cap 50 to drop at the exhaust in-process, provides more stable connection effect, of course also can adopt other connected modes according to the needs of design, for example buckle connection, adopts the mode of buckle connection, conveniently dismantles and connects, has reduced the time of operation.
The following effects are achieved by providing a fixing member 24 in the inner cavity of the catheter assembly 20 for fixing the sealing member 23: 1. after the puncturing work is finished, the puncturing needle tube 10 needs to be withdrawn, and the puncturing needle tube 10 is prevented from carrying out the sealing element 23 together during the withdrawal, so that the tightness of the sealing element 23 is ensured; 2. after the puncture needle tube 10 is withdrawn, blood flows into the indwelling needle 100 to exhaust air in the indwelling needle 100, and as the blood has a certain pressure, the sealing element 23 is ejected out by arranging the fixing element 24 on one side of the sealing element 23 to avoid overlarge blood pressure; 3. when high pressure drip injection is performed, the injection pressure of the drip reaches 350PSI, and the ejection of the sealing element 23 due to the overlarge injection pressure is avoided, so that a good sealing effect is provided.
The other end of the connecting tube 30 is connected with the exhaust cap 50, and by directly arranging the exhaust cap 50, other transmission components are not required to be arranged, so that the exhaust speed is accelerated, and the situation that the indwelling needle 100 is blocked due to the fact that blood stays and condenses in the indwelling needle 100 for a long time is avoided. Specifically, when the puncture needle tube 10 is used, the puncture needle tube 10 is firstly used for puncturing a vein, the puncture catheter 22 and the puncture needle tube 10 are together used for entering the vein, at the moment, the puncture needle tube 10 is withdrawn from the other end of the tube body 21, the puncture catheter 22 is left in the vein, after the puncture needle tube 10 is withdrawn, blood enters the indwelling needle 100 because the blood pressure of a human body is higher than the pressure of air, the tail end of the indwelling needle 100 is provided with the ventilated membrane 52, the ventilated membrane 52 only can allow the air to pass through, the air in the indwelling needle 100 is slowly exhausted along with the increase of the blood, after the air is exhausted, the connecting tube 30 is closed by the liquid stop clamp 40, the blood cannot enter the indwelling needle 100 continuously, at the moment, only the liquid stop clamp 40 is needed to be connected, at the moment, the external pressure is higher than the blood pressure of the human body, and the external pressure presses the blood back into the human body, so that the transfusion work is completed. By adopting the technical scheme, the stability of the whole detained needle 100 can be ensured when high-pressure injection is carried out, the situation that the detained needle 100 is not pressure-resistant due to overlarge pressure is avoided, and the stability of the whole transfusion process is ensured. At the same time, the time of exhausting is reduced, the blood coagulation is prevented from blocking the indwelling needle 100, and a good environment is provided for subsequent transfusion.
In one embodiment of the present application, the filter pore size of the gas permeable membrane 52 is 0.1 μm to 0.13 μm.
In this embodiment, the air permeable membrane 52 adopts a hydrophobic membrane, and the blocking of blood is completed by the hydrophobic membrane, and only air is allowed to pass through but not blood, so that the effect of exhausting air is achieved, the pore diameter of the filtration is set to be between 0.1 μm and 0.13 μm, and a large outlet of air is ensured while the blood cannot pass through. A further preferred pore size is 0.12 μm, and a pore size of 0.12 μm prevents harmful substances in the air from entering the interior of the indwelling needle 100 through the filtering pore size while ensuring a large passage of the air through the pore size.
In an embodiment of the application, the exhaust cap 50 further includes at least two supporting members 53a, wherein the two supporting members 53a are connected to the connecting sleeve 51, and the two supporting members 53a are respectively abutted against two side surfaces of the air permeable membrane 52.
By adopting the technical scheme, the supporting piece 53a and the supporting piece 53b are respectively abutted to the two side surfaces of the ventilation film 52 and used for fixing the ventilation film 52, so that the ventilation film 52 is ensured to fall off due to overhigh blood pressure in the ventilation process. The supporting piece 53 is connected in the connecting sleeve 51 in a clamping connection mode, so that the early installation is convenient. Of course, other connection methods, such as glue bonding, may be used according to design requirements. So that the installation of the supporting member 53 is more convenient.
In an embodiment of the present application, the exhaust cap 50 further includes a reinforcing rib 54, and the reinforcing rib 54 is connected to an outer sidewall of the connection sleeve 51.
By adopting the above technical scheme, the reinforcing ribs 54 are arranged on the outer side of the connecting sleeve 51 to improve the strength of the whole connecting sleeve 51, so that the connecting sleeve 51 is convenient to take down after the exhaust work is completed while the connecting sleeve 51 is reinforced.
In an embodiment of the present application, the inner cavity of the tube body 21 is further provided with an annular protrusion 26, and the outer side wall of the sealing member 23 is provided with an annular engagement groove 231, and the annular protrusion 26 is matched with the annular engagement groove 231.
By adopting the above technical scheme, set up annular bulge 26 in pipe body 21, fix sealing member 23 through the cooperation of annular bulge 26 and the annular block groove 231 that sets up on sealing member 23 lateral wall, avoid when carrying out high-pressure injection, sealing member 23 appears the condition that drops, further improve the stability of keeping somewhere needle 100 work.
In an embodiment of the present application, the indwelling needle 100 further includes a filter connector 60, one end of the filter connector 60 is connected to the connecting tube 30, and the other end of the filter connector 60 is screwed to the connecting sleeve 51.
By adopting the technical scheme, the indwelling needle 100 further comprises the filter joint 60, and impurities in the liquid medicine can be filtered by arranging the filter joint 60, so that the damage to human bodies is reduced.
In an embodiment of the present application, the outer wall of the filter joint 60 is covered with an anti-slip rubber sleeve 70.
By adopting the technical scheme, the anti-slip rubber sleeve 70 is coated on the outer wall of the filter joint 60, so that the filter joint is convenient for medical staff to hold and slipping is avoided.
In one embodiment of the application, the access tube 25 is at a 45 degree angle to the seal 23.
By adopting the technical scheme, the access tube 25 is arranged to form an angle of 45 degrees with the voice sealing piece 23, so that liquid medicine or liquid medicine can pass through conveniently, a large turning point is avoided between the access tube 25 and the tube body 21, blood is prevented from condensing at the turning point in the reflux process, the smooth use of the whole retain job needle is ensured, and congestion is avoided.
In an embodiment of the present application, the indwelling needle 100 further includes an operating handle 80, the operating handle 80 is connected to an end of the puncture needle tube 10 near the fixing member 24, and the operating handle 80 is used for pulling out the puncture needle tube 10.
By adopting the technical scheme, the operation handle 80 is connected to one end of the puncture needle tube 10 close to the fixing piece 24, so that the puncture needle tube 10 can be conveniently taken out after the puncture work is completed.
The invention also provides an infusion device, the subject includes an infusion tube and an indwelling needle 100, the specific structure refers to the above embodiment, and as the infusion device adopts all the technical solutions of all the above embodiments, the infusion device has all the beneficial effects brought by the technical solutions of the above embodiments, and the description is not repeated one by one.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (7)
1. An indwelling needle, characterized in that the indwelling needle comprises:
puncture needle tube;
The catheter assembly comprises a catheter body and a puncture catheter connected to one end of the catheter body, an opening is formed in one end, deviating from the puncture catheter, of the catheter body, a sealing piece for sealing the opening is arranged in an inner cavity of the catheter body, a fixing piece is further arranged at one end, deviating from the puncture catheter, of the sealing piece, the puncture needle tube is connected to the fixing piece, the sealing piece and the puncture catheter in a penetrating mode, an access tube is connected to the outer side wall of the catheter body, and the access tube is located between the sealing piece and the puncture catheter and is communicated with the inner cavity of the catheter body;
The connecting pipe is connected with one end of the access pipe, the other end of the connecting pipe is connected with an exhaust cap, and the exhaust cap comprises a connecting sleeve connected with the connecting pipe and a breathable film connected with the connecting sleeve; and
The liquid stopping clamp is connected to the connecting pipe and used for opening or closing the connecting pipe;
The retaining needle also comprises an operating handle, wherein the operating handle is connected to one end of the puncture needle tube, which is close to the fixing piece, and is arranged at intervals with the fixing piece, and the operating handle is used for pulling out the puncture needle tube;
The fixing piece comprises a fixing section and a mounting section, the mounting section is arranged at one end of the fixing section far away from the sealing piece, and the outer wall of the mounting section and the inner wall of the pipe body are arranged at intervals;
The exhaust cap further comprises at least two supporting pieces, wherein the two supporting pieces are connected to the connecting sleeve, and the two supporting pieces are respectively abutted to the two side surfaces of the breathable film.
2. The indwelling needle according to claim 1, wherein the air-permeable membrane has a filtration pore size of 0.1 μm to 0.13 μm.
3. The indwelling needle according to claim 1, wherein the inner cavity of the tube body is further provided with an annular protrusion, an annular engaging groove is formed in the outer side wall of the sealing member, and the annular protrusion is matched with the annular engaging groove.
4. The indwelling needle according to any one of claims 1 to 3, further comprising a filter adapter having one end connected to said connecting tube and the other end screwed to said connecting sleeve.
5. The indwelling needle according to claim 4, wherein the outer wall of the filter adapter is covered with an anti-slip gel sleeve.
6. The indwelling needle of claim 5, wherein the access tube is at a 45 degree angle to the sealing member.
7. An infusion device comprising an infusion tube and the indwelling needle according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910278252.3A CN109908431B (en) | 2019-04-08 | 2019-04-08 | Indwelling needle and infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910278252.3A CN109908431B (en) | 2019-04-08 | 2019-04-08 | Indwelling needle and infusion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109908431A CN109908431A (en) | 2019-06-21 |
| CN109908431B true CN109908431B (en) | 2024-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910278252.3A Active CN109908431B (en) | 2019-04-08 | 2019-04-08 | Indwelling needle and infusion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109908431B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205849916U (en) * | 2016-06-24 | 2017-01-04 | 河南驼人贝斯特医疗器械有限公司 | A kind of high pressure-resistant remaining needle |
| CN209827812U (en) * | 2019-04-08 | 2019-12-24 | 深圳安特医疗股份有限公司 | Indwelling needle and infusion device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201361314Y (en) * | 2009-02-24 | 2009-12-16 | 佛山市爱迪医疗器械有限公司 | Retaining needle capable of discharging gas automatically |
| CN202961357U (en) * | 2012-11-13 | 2013-06-05 | 邵聪文 | Novel remaining needle |
| CN204158808U (en) * | 2014-09-15 | 2015-02-18 | 广东百合医疗科技股份有限公司 | A kind of high pressure remaining needle |
| CN205084113U (en) * | 2015-10-20 | 2016-03-16 | 南阳医学高等专科学校第一附属医院 | Neurosurgery is with keeping somewhere needle |
| WO2017143176A1 (en) * | 2016-02-18 | 2017-08-24 | Smiths Medical Asd, Inc. | Closed system catheter |
| CN107789703A (en) * | 2017-11-16 | 2018-03-13 | 广东龙心医疗器械有限公司 | The indwelling structure and remaining needle of a kind of remaining needle |
-
2019
- 2019-04-08 CN CN201910278252.3A patent/CN109908431B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205849916U (en) * | 2016-06-24 | 2017-01-04 | 河南驼人贝斯特医疗器械有限公司 | A kind of high pressure-resistant remaining needle |
| CN209827812U (en) * | 2019-04-08 | 2019-12-24 | 深圳安特医疗股份有限公司 | Indwelling needle and infusion device |
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| Publication number | Publication date |
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| CN109908431A (en) | 2019-06-21 |
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