CN114870166B - Exhaust joint - Google Patents
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- CN114870166B CN114870166B CN202210216627.5A CN202210216627A CN114870166B CN 114870166 B CN114870166 B CN 114870166B CN 202210216627 A CN202210216627 A CN 202210216627A CN 114870166 B CN114870166 B CN 114870166B
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- exhaust
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- upper cover
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/36—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body
- A61M5/38—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body using hydrophilic or hydrophobic filters
- A61M5/385—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests with means for eliminating or preventing injection or infusion of air into body using hydrophilic or hydrophobic filters using hydrophobic filters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Emergency Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to an exhaust connector, which comprises a connector body, wherein the connector body is provided with a channel and an exhaust interface which is communicated with the channel and is suitable for connection; the device is also provided with at least one exhaust port communicated with the channel, and an exhaust film is arranged on the exhaust port; a sealing device for sealing off the exhaust port is disposed on the exhaust port. When the flushing and retaining needle is used for exhausting, the end cap is opened, liquid is injected from the main interface of the infusion connector of the retaining needle, gas in the retaining needle can be discharged from the exhaust film at the exhaust port through the channel, and the liquid in the retaining needle is blocked by the exhaust film and cannot be discharged; when the air in the retaining needle is exhausted, the end cap is covered on the air outlet to seal the air outlet, so that the external air is prevented from entering the channel and the retaining needle through the air outlet membrane at the air outlet. The exhaust connector can exhaust the gas in the detaining needle and prevent the external air from entering the detaining needle after the gas in the detaining needle is exhausted.
Description
The invention is a divisional application with the application date of 2016, 8 and 31, the application number of 201610799245.4 and the invention name of an exhaust joint
Technical Field
The invention relates to the technical field of medical instruments, in particular to an exhaust joint.
Background
The indwelling needle is medical equipment for carrying out infusion treatment for many times within a certain time, and generally comprises a catheter, a catheter seat, an elastic extension tube, a liquid stopping clamp, a three-way infusion connector and the like, wherein the catheter is arranged on the catheter seat, the liquid stopping clamp is arranged on the elastic extension tube, one end of the elastic extension tube is connected with the catheter seat, and the other end of the elastic extension tube is connected with the three-way infusion connector. The three-way infusion connector generally comprises a main interface, a side interface and an output port, wherein the output port is connected with the elastic extension tube, the main interface is communicated with the infusion tube and supplies liquid medicine into the elastic extension tube through the output port, and the side interface is used for assisting in adding medicine into the elastic extension tube.
Before the indwelling needle is used, the air in the indwelling needle needs to be exhausted through liquid flow, and the air at the side interface is always in a closed state in the exhausting process, so that the air at the side interface is difficult to exhaust, and therefore the air is likely to be taken into a blood vessel of a patient along with liquid medicine in the infusion process, air embolism is caused, the patient is endangered, even the life safety of the patient is threatened, and even if the air does not finally enter a human body, the patient can be panic when seen by the patient, and the treatment effect is affected.
Chinese patent document CN203694250U discloses a novel self-venting type indwelling needle, including needle subassembly and Y type needle file through catheter connection, be equipped with the heparin cap in the one end of Y type needle file, be equipped with the antibacterial cap at the other end of Y type needle file, be equipped with the gas vent at the top of antibacterial cap, install hydrophobic ventilated membrane in gas vent department, hydrophobic ventilated membrane allows gas to pass through and does not allow liquid to pass through. The prior art utilizes the hydrophobic and breathable film arranged at the exhaust port at the top of the antibacterial cap, and can exhaust the gas in the Y-shaped needle seat in clinical use, but the hydrophobic and breathable film for exhausting is arranged at the top of the antibacterial cap, so that the outside air cannot be prevented from entering the indwelling needle, and the gas still cannot be effectively prevented from being mixed into the blood vessel of a patient.
Disclosure of Invention
Therefore, the invention aims to overcome the defect that the indwelling needle in the prior art cannot prevent external air from entering the needle after the indwelling needle is exhausted, and further provides an exhaust connector capable of preventing external air from entering the indwelling needle after the indwelling needle is exhausted.
The invention relates to an exhaust connector, which comprises a connector body, wherein the connector body is provided with a channel and an exhaust interface which is communicated with the channel and is suitable for connection; the device is also provided with at least one exhaust port communicated with the channel, and an exhaust film is arranged on the exhaust port; a sealing device for sealing off the exhaust port is disposed on the exhaust port.
The connector body is provided with a medicine adding port; the dosing opening is provided with a dosing opening cover.
The side wall of the channel is outwards extended to form an exhaust pipeline communicated with the channel, and the exhaust film is arranged in the exhaust pipeline in a sealing manner.
The sealing device is an end cap arranged at one end of the exhaust pipeline far away from the channel, or a three-way cock arranged at the junction of the channel and the exhaust pipeline.
The periphery of the end wall of the channel far away from the exhaust interface is provided with the exhaust port, and the exhaust film is arranged on the exhaust port in a sealing way; the sealing means is switchable between a first state blocking communication between the outside world and the passageway and a second state communicating between the outside world and the passageway.
The exhaust port is formed around the dosing port and comprises at least two exhaust holes.
The exhaust port further comprises an annular exhaust groove which is formed at one end of the exhaust hole close to the channel and is respectively communicated with the channel and the exhaust hole;
the exhaust film is arranged on one side of the annular exhaust groove away from the exhaust hole in a sealing mode.
The connector body comprises a base and an upper cover which can be mutually detached and installed, the sealing device comprises a sealing gasket arranged on the end face, close to the exhaust port, of the side wall of the channel, and the exhaust port can be sealed when the base and the upper cover move relatively close to each other.
The sealing device is detachably arranged on the outer pipe wall of the dosing port and can move towards the direction close to the exhaust port relative to the joint body to seal the exhaust port.
The medicine adding port cover is a puncture plug which can be directly punctured and infused with medicine liquid.
The technical scheme of the invention has the following advantages:
1. the invention provides an exhaust connector, which comprises a connector body, wherein the connector body is provided with a channel and an exhaust interface which is communicated with the channel and is suitable for connection; the device is also provided with at least one exhaust port communicated with the channel, and an exhaust film is arranged on the exhaust port; a sealing device for sealing off the exhaust port is disposed on the exhaust port. When the flushing and retaining needle is used for exhausting, the end cap is opened, liquid is injected from the main interface of the infusion connector of the retaining needle, gas in the retaining needle can be discharged from the exhaust film at the exhaust port through the channel, and the liquid in the retaining needle is blocked by the exhaust film and cannot be discharged; when the air in the retaining needle is exhausted, the end cap is covered on the air outlet to seal the air outlet, so that the external air is prevented from entering the channel and the retaining needle through the air outlet membrane at the air outlet. The exhaust connector can exhaust the gas in the detaining needle and prevent the external air from entering the detaining needle after the gas in the detaining needle is exhausted.
2. According to the exhaust connector provided by the invention, the side wall of the channel is outwards extended to form the exhaust pipeline communicated with the channel, and the exhaust film is arranged in the exhaust pipeline in a sealing manner. The exhaust port and the dosing port are respectively arranged at two different pipelines of the exhaust pipeline and the channel, and can directly inject liquid medicine into the dosing port through the heparin cap covered by the puncture, so that the dosing device has two functions of exhaust and dosing, and the implementation process is not mutually interfered.
3. The periphery of the end wall of the channel far away from the exhaust interface is provided with the exhaust port, and the exhaust film is arranged on the exhaust port in a sealing way; the sealing means is switchable between a first state in which it blocks communication between the exhaust port and the passageway and a second state in which it communicates between the exhaust port and the passageway. Not only can realize the exhaustion of the gas in the detaining needle, but also can prevent the external air from entering the detaining needle after the gas in the detaining needle is exhausted.
4. The exhaust connector provided by the invention has the advantages that the exhaust port is formed around the dosing port, and the exhaust connector comprises at least two exhaust holes. The exhaust port and the dosing port are located at two different positions of the periphery and the center of the channel respectively, and can be directly filled with liquid medicine through the heparin cap covered on the dosing port by puncturing, so that the dosing device has two functions of exhaust and dosing, and the implementation process is not interfered with each other.
5. The exhaust joint provided by the invention further comprises an annular exhaust groove, wherein the annular exhaust groove is formed at one end of the exhaust hole, which is close to the channel, and is respectively communicated with the channel and the exhaust hole; the exhaust film is arranged on one side of the annular exhaust groove away from the exhaust hole in a sealing mode. The annular exhaust groove is arranged at one end of the exhaust hole close to the channel, so that air can be more fully captured in the exhaust process, and the exhaust efficiency is improved.
6. The air exhaust connector provided by the invention has the advantages that the medicine adding cover is a puncture plug which can be directly punctured and infused with medicine liquid. The medicine adding cover in the form of a puncture plug can be directly injected and added by puncture, is simple and clean to operate and is not easy to enter gas in the medicine adding process.
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 needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the exhaust connector according to embodiment 1 of the present invention mounted on an infusion connector, wherein the end cap is in an open state;
FIG. 2 is a schematic view of the vent connector of FIG. 1 in another position mounted on an infusion connector with the end cap in a closed position;
FIG. 3 is a schematic view of the vent connector provided in embodiment 2 of the present invention mounted on an infusion connector, wherein the cock is in a state of communicating the channel with the vent port;
FIG. 4 is a schematic view of the vent fitting of FIG. 3 in another position mounted on the infusion fitting with the tap in a position blocking communication between the passageway and the vent;
FIG. 5 is an exploded view of the vent connector according to embodiment 3 of the present invention mounted on an infusion connector, wherein the end cap is in a non-occluded vent state;
FIG. 6 is a schematic view of the vent connector of FIG. 5 in another position mounted on the infusion connector with the end cap in a position closing the vent;
FIG. 7 is a schematic view showing the mounting of the exhaust connector provided in embodiment 4 of the present invention on an indwelling needle;
FIG. 8 is a schematic view of the exhaust joint provided in embodiment 4 of the present invention, wherein the gasket is in a state of not closing the exhaust port;
FIG. 9 is a schematic view of the exhaust fitting of FIG. 8 in another condition, wherein the gasket is in a condition to close the exhaust port;
FIG. 10 is a schematic bottom view of the upper cover of the exhaust fitting of FIG. 8;
FIG. 11 is a schematic view of the exhaust joint provided in embodiment 5 of the present invention, wherein the seal ring is in a state of unsealing the exhaust port;
FIG. 12 is a schematic view of the exhaust fitting of FIG. 11 in another state, wherein the seal ring is in a state of sealing the exhaust port;
reference numerals illustrate:
the device comprises a 1-joint body, a 11-channel, a 12-exhaust interface, a 13-base, a 14-upper cover, a 2-exhaust film, a 3-exhaust port, a 31-exhaust hole, a 32-annular exhaust groove, a 4-exhaust pipeline, a 5-dosing port, a 51-dosing port cover, a 61-end cap, a 62-three-way cock, a 63-sealing gasket, a 64-sealing ring, a 100-exhaust joint, a 200-infusion joint, a 201-side interface and a 202-main interface.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
As shown in fig. 1 and 2, the present embodiment provides an exhaust connector 100, which is adapted to be mounted on an interface 201 of an infusion connector 200 of an indwelling needle, and includes a connector body 1, an exhaust film 2, and a sealing device.
The connector body 1 has a passage 11, an exhaust port 12 connected to and communicating with the passage 11, and an exhaust port 3 communicating with the passage 11. The side wall of the channel 11 is outwards extended to form an exhaust pipeline 4 communicated with the channel 11, and the exhaust port 3 is arranged on the exhaust pipeline 4. One end of the channel 11 is connected and communicated with the side interface 201 of the infusion connector 200, the other end is provided with a dosing port 5, the exhaust connector 100 can dose the infusion connector 200 of the indwelling needle through the dosing port 5, and the dosing port 5 is provided with a dosing port cover 51 for sealing the dosing port 5 so as to ensure the cleaning of the dosing port 5 and the inside of the channel 11. The dosing cap 51 is a heparin cap fixedly connected with the dosing port 5, can be directly punctured to inject liquid medicine, is simple and clean to operate, and is not easy to enter gas in the dosing process.
The exhaust film 2 is provided on the exhaust port 3 and closes the exhaust duct 4. The gas-discharge membrane 2 is a membrane that allows gas to pass therethrough but does not allow liquid to pass therethrough, and is used to discharge the gas in the passage 11.
The sealing device is an end cap 61 installed at one end of the exhaust pipe 4 far away from the channel 11, and is arranged on the exhaust port 3, and is used for sealing the exhaust port 3 after the exhaust port 3 is exhausted, so as to prevent external gas from entering the channel 11 through the exhaust port 3.
When the flushing indwelling needle is exhausted, as shown in fig. 1, the end cap 61 is opened, liquid is injected from the main interface 202 of the infusion connector 200 of the indwelling needle, the gas in the indwelling needle can be exhausted from the exhaust film 2 at the exhaust port 3 through the channel 11, and the liquid in the indwelling needle is blocked by the exhaust film 2 and cannot be exhausted; after the air in the indwelling needle is exhausted, as shown in fig. 2, the end cap 61 is covered on the air outlet 3 to block the air outlet 3, and prevent the external air from entering the channel 11 and the indwelling needle through the air outlet film 2 at the air outlet 3. The exhaust connector 100 of the present embodiment can exhaust the gas in the indwelling needle and prevent the external air from entering the indwelling needle after the gas in the indwelling needle is exhausted.
In this embodiment, the side wall of the channel 11 is formed by extending outwards to form an exhaust duct 4 communicated with the channel 11, and the exhaust port 3 is disposed on the exhaust duct 4. The exhaust port 3 and the dosing port 5 are respectively arranged on two different pipelines of the exhaust pipeline 4 and the channel 11, and can directly inject liquid medicine into the dosing port 5 through the heparin cap covered by the puncture, so that the dosing device has two functions of exhaust and dosing, and the implementation process is not interfered with each other.
In other embodiments, the drug delivery cap 51 may be a piercing plug made of other elastic materials.
In other embodiments, the dosing cap 51 may be a conventional end cap 61 removably attached to the dosing port 5, and the end cap 61 removed when dosing from the dosing port 5 is desired; when it is not necessary to add medicine from the medicine-adding port 5, the end cap 61 is covered.
Example 2
As shown in fig. 3 and 4, the present embodiment is different from embodiment 1 in that:
the sealing means is a three-way tap 62 mounted at the junction of the channel 11 and the exhaust duct 4.
When the flushing indwelling needle is exhausted, as shown in fig. 3, the tee cock 62 is rotated to enable the channel 11 to be communicated with the exhaust port 3, liquid is injected from the main interface 202 of the infusion connector 200 of the indwelling needle, gas in the indwelling needle can be exhausted from the exhaust film 2 at the exhaust port 3 through the channel 11, and the liquid in the indwelling needle is blocked by the exhaust film 2 and cannot be exhausted; after the air in the remaining needle is exhausted, as shown in fig. 4, the tee cock 62 is rotated to enable the channel 11 to be communicated with the medicine adding port 5, meanwhile, the channel 11 and the medicine adding port 5 are not communicated with the air outlet 3, the air outlet 3 is blocked, and external air is prevented from entering the channel 11 and the remaining needle through the air exhaust film 2 at the air outlet 3.
Example 3
As shown in fig. 5 and 6, the present embodiment provides an exhaust connector 100, which is adapted to be mounted on an interface 201 of an infusion connector 200 of an indwelling needle, and includes a connector body 1, an exhaust film 2, and a sealing device.
The connector body 1 has a passage 11 and an exhaust port 12 connected to and communicating with the passage 11, one end of the passage 11 is connected to and communicates with the side port 201 of the infusion connector 200, and the other end is provided with an exhaust port 3. The exhaust film 2 is provided on the exhaust port 3 and closes the passage 11. The gas-discharge membrane 2 is a membrane that allows gas to pass therethrough but does not allow liquid to pass therethrough, and is used to discharge the gas in the passage 11.
The sealing means is an end cap 61 provided on the exhaust port 3 for blocking the exhaust port 3 after the exhaust port 3 is exhausted, preventing external gas from entering into the passage 11 through the exhaust port 3.
When the flushing indwelling needle is exhausted, as shown in fig. 5, the end cap 61 is opened, liquid is injected from the main interface 202 of the infusion connector 200 of the indwelling needle, the gas in the indwelling needle can be exhausted from the exhaust film 2 at the exhaust port 3 through the channel 11, and the liquid in the indwelling needle is blocked by the exhaust film 2 and cannot be exhausted; after the air in the indwelling needle is exhausted, as shown in fig. 6, the end cap 61 is covered on the air outlet 3 to block the air outlet 3, and prevent the external air from entering the channel 11 and the indwelling needle through the air outlet film 2 at the air outlet 3. The exhaust connector 100 of the present embodiment can also exhaust the gas in the indwelling needle, and prevent the external air from entering the indwelling needle after the gas in the indwelling needle is exhausted.
Example 4
As shown in fig. 7-9, the present embodiment provides an exhaust connector 100, which is suitable for being mounted on an interface 201 of an infusion connector 200 of an indwelling needle, and comprises a connector body 1, an exhaust film 2, and a sealing device.
The joint body 1 includes a base 13 and an upper cover 14. External threads are formed on the outer wall of the base 13, internal threads are formed on the inner wall of the upper cover 14, and the base 13 and the upper cover 14 are connected together in a threaded fit mode. The base 13 is formed with a passage 11 and an exhaust port 12 connected to and communicating with an end of the passage 11 remote from the upper cover 14. One end of the channel 11 is connected and communicated with the side interface 201 of the infusion connector 200, the other end is provided with a dosing port 5, the exhaust connector 100 can dose the infusion connector 200 of the indwelling needle through the dosing port 5, and the dosing port 5 is provided with a dosing port cover 51 for sealing the dosing port 5 so as to ensure the cleaning of the dosing port 5 and the inside of the channel 11. The dosing cap 51 is a heparin cap fixedly connected with the dosing port 5, can be directly punctured to inject liquid medicine, is simple and clean to operate, and is not easy to enter gas in the dosing process.
Referring to fig. 10, the upper cover 14 is formed with an exhaust port 3 surrounding the dosing port 5, the exhaust port 3 includes a plurality of exhaust holes 31 uniformly distributed along the circumferential direction of the dosing port 5, and further includes an annular exhaust groove 32, where the annular exhaust groove 32 is formed at one end of the exhaust hole 31 near the channel 11 and is respectively communicated with the channel 11 and the exhaust hole 31. The annular exhaust groove 32 is arranged at one end of the exhaust hole 31 close to the channel 11, so that air can be more fully captured in the exhaust process, and the exhaust efficiency is improved.
The exhaust film 2 is closely mounted to the side of the annular exhaust groove 32 remote from the exhaust hole 31. The gas-discharge membrane 2 is a membrane that allows gas to pass therethrough but does not allow liquid to pass therethrough, and is used to discharge the gas in the passage 11.
The sealing means comprises a gasket 63 provided on the end face of the side wall of the channel 11 on the base 13 adjacent to the exhaust port 3. When the base 13 and the upper cover 14 are rotated so that the base 13 and the upper cover 14 move relatively close to each other, as shown in fig. 9, the gasket 63 moves close to the exhaust port 3 and finally seals the exhaust port 3 to be in a first state of blocking communication between the exhaust port 3 and the passage 11; when the base 13 and the upper cover 14 are rotated so that the base 13 and the upper cover 14 move relatively away from each other, as shown in fig. 8, the gasket 63 moves away from the exhaust port 3 and finally releases the seal of the exhaust port 3 to be placed between a second state of communicating the exhaust port 3 with the passage 11. The gasket 63 is switchable between a first state and a second state in response to adjustment of relative movement between the base 13 and the upper cover 14.
When the flushing and retaining needle is used for exhausting, the base 13 and the upper cover 14 are rotated, so that the base 13 and the upper cover 14 are relatively far away from each other, as shown in fig. 8, the sealing gasket 63 is far away from the exhaust port 3 and is in a second state of communicating the exhaust port 3 with the channel 11, liquid is injected from the main interface 202 of the infusion connector 200 of the retaining needle, gas in the retaining needle can be exhausted from the exhaust film 2 at the exhaust port 3 through the channel 11, and the liquid in the retaining needle is blocked by the exhaust film 2 and cannot be exhausted; when the air in the indwelling needle is exhausted, the base 13 and the upper cover 14 are rotated to enable the base 13 and the upper cover 14 to move relatively close to each other, as shown in fig. 9, the sealing gasket 63 moves close to the air outlet 3 and finally seals the air outlet 3 to be in a first state of blocking the communication between the air outlet 3 and the channel 11, and external air is prevented from entering the channel 11 and the indwelling needle through the air outlet film 2 at the air outlet 3. The exhaust connector 100 of the present embodiment can also exhaust the gas in the indwelling needle, and prevent the external air from entering the indwelling needle after the gas in the indwelling needle is exhausted. In addition, during high-pressure transfusion, the sealing gasket 63 seals the exhaust port 3 from the side of the exhaust film 2 close to the channel 11, so that the exhaust film 2 can be effectively protected, and the exhaust film 2 is not easy to break under the high-pressure action of transfusion.
In this embodiment, the air outlet 3 is formed around the dosing port 5. The exhaust port 3 and the dosing port 5 are respectively arranged at two different positions of the periphery and the center of the channel 11, and can directly inject liquid medicine into the heparin cap covered on the dosing port 5 through puncturing, so that the dosing is realized, the functions of exhaust and dosing are realized, and the realization process is not mutually interfered.
In other embodiments, the drug delivery cap 51 may be a piercing plug made of other elastic materials.
In other embodiments, the dosing cap 51 may be a conventional end cap 61 removably attached to the dosing port 5, and the end cap 61 removed when dosing from the dosing port 5 is desired; when it is not necessary to add medicine from the medicine-adding port 5, the end cap 61 is covered.
In other embodiments, the base 13 and the upper cover 14 may be movably mounted, so long as the upper cover 14 and the base 13 can be relatively moved, for example, a clamping block is formed on the outer wall of the base 13, a clamping groove into which the clamping block is clamped is formed at a corresponding position on the inner wall of the upper cover 14, the clamping block and the clamping groove Cheng Kage are mounted and fixed on the base 13 and the upper cover 14 in the process of inserting the base 13 into the upper cover 14, at this time, the sealing gasket 63 seals the exhaust port 3, and the clamping connection can also realize the switching of the sealing gasket 63 between the first state and the second state.
In other embodiments, the exhaust film 2 may be mounted on the side of the exhaust hole 31 close to the base 13 without providing the annular exhaust groove 32, so that the air in the remaining needle can be exhausted, the external air can be prevented from entering the remaining needle after the air in the remaining needle is exhausted, the two functions of exhaust and medicine adding can be achieved, and the processes of exhaust and medicine adding are not interfered with each other.
Example 5
As shown in fig. 11 and 12, the present embodiment is different from embodiment 4 in that:
an external thread is formed on the outer wall of one end of the upper cover 14 far away from the base 13;
the sealing device is no longer a sealing gasket 63 arranged on the end face of the side wall of the channel 11 on the base 13, which is close to the exhaust port 3, but a sealing ring 64 with internal threads matched with external threads on the outer wall of the upper cover 14 is formed on the inner wall, and the sealing ring 64 is connected to the outer wall of the upper cover 14 in a threaded manner and can move towards the direction close to the exhaust port 3 relative to the upper cover 14 to seal the exhaust port 3.
When the flushing and retaining needle is used for exhausting, the sealing ring 64 on the upper cover 14 is rotated, so that the sealing ring 64 and the upper cover 14 are relatively far away from each other, as shown in fig. 11, the sealing ring 64 is far away from the exhaust port 3 and is in a second state of communicating the outside with the channel 11, liquid is injected from the main interface 202 of the infusion connector 200 of the retaining needle, gas in the retaining needle can be exhausted from the exhaust film 2 at the exhaust port 3 through the channel 11, and the liquid in the retaining needle is blocked by the exhaust film 2 and cannot be exhausted; when the air in the indwelling needle is exhausted, the sealing ring 64 on the upper cover 14 is rotated, so that the sealing ring 64 and the upper cover 14 move relatively close to each other, as shown in fig. 12, the sealing ring 64 moves close to the exhaust port 3 and finally seals the exhaust port 3 to be in a first state of blocking communication between the outside and the channel 11, and the outside air is prevented from entering the channel 11 and the indwelling needle through the exhaust film 2 at the exhaust port 3. The exhaust connector 100 of the present embodiment can also exhaust the gas in the indwelling needle, and prevent the external air from entering the indwelling needle after the gas in the indwelling needle is exhausted.
In other embodiments, the body may not be split into two parts, namely the base 13 and the upper cover 14, and may be an integral part.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (1)
1. An exhaust connector (100) is characterized in that the connector is suitable for being arranged on an side interface (201) of an infusion connector (200) of an indwelling needle, a connector body (1) comprises a base (13) and an upper cover (14), external threads are formed on the outer wall of the base (13), internal threads are formed on the inner wall of the upper cover (14), and the base (13) and the upper cover (14) are connected together in a threaded fit mode; the base (13) is provided with a channel (11) and an exhaust interface (12) which is connected and communicated with one end of the channel (11) far away from the upper cover (14); one end of the channel (11) is connected and communicated with the side interface (201) of the infusion connector (200), the other end is provided with a dosing port (5), the exhaust connector (100) can dose the infusion connector (200) of the indwelling needle through the dosing port (5), and the dosing port (5) is provided with a dosing port cover (51) for sealing the dosing port (5); the dosing mouth cover (51) is a heparin cap fixedly connected with the dosing mouth (5);
the upper cover (14) is provided with an exhaust port (3) surrounding the dosing port (5), the exhaust port (3) comprises a plurality of exhaust holes (31) uniformly distributed along the circumferential direction of the dosing port (5), the upper cover also comprises an annular exhaust groove (32), and the annular exhaust groove (32) is formed at one end, close to the channel (11), of the exhaust hole (31) and is respectively communicated with the channel (11) and the exhaust hole (31); an annular exhaust groove (32) is arranged at one end of the exhaust hole (31) close to the channel (11);
the exhaust film (2) is arranged on one side of the annular exhaust groove (32) far away from the exhaust hole (31) in a sealing way and is used for exhausting the gas in the channel (11); an external thread is formed on the outer wall of one end of the upper cover (14) far away from the base (13);
the air exhaust device further comprises a sealing ring (64) with an inner wall formed with an inner thread matched with the outer thread on the outer wall of the upper cover (14), wherein the sealing ring (64) is in threaded connection with the outer wall of the upper cover (14) and can move towards the direction close to the air exhaust port (3) relative to the upper cover (14) to seal the air exhaust port (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210216627.5A CN114870166B (en) | 2016-08-31 | 2016-08-31 | Exhaust joint |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210216627.5A CN114870166B (en) | 2016-08-31 | 2016-08-31 | Exhaust joint |
| CN201610799245.4A CN106237455B (en) | 2016-08-31 | 2016-08-31 | Exhaust joint |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610799245.4A Division CN106237455B (en) | 2016-08-31 | 2016-08-31 | Exhaust joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114870166A CN114870166A (en) | 2022-08-09 |
| CN114870166B true CN114870166B (en) | 2023-06-20 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210216627.5A Active CN114870166B (en) | 2016-08-31 | 2016-08-31 | Exhaust joint |
| CN201610799245.4A Active CN106237455B (en) | 2016-08-31 | 2016-08-31 | Exhaust joint |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610799245.4A Active CN106237455B (en) | 2016-08-31 | 2016-08-31 | Exhaust joint |
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| CN (2) | CN114870166B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107754049A (en) * | 2016-12-27 | 2018-03-06 | 上海交通大学 | Prevent the device that remaining needle positive pressure connector pollutes and the method based on the device |
| CN107596488B (en) * | 2017-07-17 | 2020-06-30 | 徐州一佳医疗器械有限公司 | Buckled water-blocking Y-shaped injection piece and automatic production method thereof |
| CN112138243A (en) * | 2020-09-24 | 2020-12-29 | 北京伏尔特技术有限公司 | Disposable retention needle exhaust structure for dialysis |
| CN113577452B (en) * | 2021-07-08 | 2024-01-09 | 江西洪达医疗器械集团有限公司 | Liquid medicine filter |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN114870166A (en) | 2022-08-09 |
| CN106237455B (en) | 2022-09-20 |
| CN106237455A (en) | 2016-12-21 |
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