CN210056983U - Needleless zero-pressure infusion joint - Google Patents
Needleless zero-pressure infusion joint Download PDFInfo
- Publication number
- CN210056983U CN210056983U CN201920626788.5U CN201920626788U CN210056983U CN 210056983 U CN210056983 U CN 210056983U CN 201920626788 U CN201920626788 U CN 201920626788U CN 210056983 U CN210056983 U CN 210056983U
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- CN
- China
- Prior art keywords
- valve
- needle
- bidirectional
- joint
- cover
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- 238000001802 infusion Methods 0.000 title claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 32
- 239000003814 drug Substances 0.000 claims abstract description 28
- 239000008280 blood Substances 0.000 claims description 15
- 210000004369 blood Anatomy 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 4
- 229960002897 heparin Drugs 0.000 description 4
- 229920000669 heparin Polymers 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a needleless zero-pressure infusion joint, which relates to the field of medical instruments, and comprises an upper joint cover and a lower joint cover which are connected with each other, wherein a valve core, a middle cover and a bidirectional valve body are sequentially arranged between the upper joint cover and the lower joint cover from top to bottom; the bidirectional valve body is provided with a valve groove, the valve groove is positioned below the valve needle, a bidirectional valve port is arranged in the valve groove, the joint lower cover is provided with a transfusion channel, the transfusion channel is positioned below the bidirectional valve port, after the liquid medicine enters the valve groove through the valve cavity and the valve hole in sequence, the bidirectional valve port is opened under the impact force of the liquid medicine, and the liquid medicine enters the transfusion channel through the bidirectional valve port. The utility model discloses can avoid producing pressure when the infusion finishes, improve patient's infusion comfort level.
Description
Technical Field
The utility model relates to the field of medical equipment, concretely relates to needleless zero pressure infusion connects.
Background
The current infusion joint comprises a common infusion joint and a needleless infusion joint, the common infusion joint comprises an injection glue and a connector, the injection glue is mostly formed by medical natural rubber, the needleless infusion joint comprises a heparin cap, the heparin cap is matched with an arteriovenous indwelling needle, the heparin cap can be used for multiple times and repeated puncture for infusion, and the injection glue is used for injecting medicaments. Meanwhile, the rubber has a loose structure and is easy to store dirt and dirt, and pollutants of the rubber can enter a human body along with liquid medicine during transfusion to cause blood pollution and influence the health of a patient, so that the heparin cap is completely forbidden in 1994 in the United states.
The existing needle-free infusion joint is divided into a positive pressure joint and a negative pressure joint, when the syringe is pulled out after infusion, the positive pressure joint can generate positive pressure inside the joint, so that liquid in a connecting pipe is automatically pushed forward, blood is prevented from flowing back into an indwelling needle, and thrombus is avoided being formed; when the infusion apparatus is pulled out after the infusion is finished, the negative pressure connector can generate negative pressure in the connector, so that blood in the patient can flow back, the patient can be frightened, and a plug can be generated to block an infusion channel in serious cases.
Because the positive pressure joint and the negative pressure joint can generate certain pressure when the transfusion is finished, the blood vessel of the patient can generate liquid inlet or liquid outlet, and the discomfort of the patient can be easily caused.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a needleless zero pressure infusion connects can avoid producing pressure when infusing to finish, improves patient's infusion comfort level.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a needleless zero-pressure infusion joint comprises an upper joint cover and a lower joint cover which are connected with each other, wherein a valve core, a middle cover and a bidirectional valve body are sequentially arranged between the upper joint cover and the lower joint cover from top to bottom;
the bidirectional valve body is provided with a valve groove, the valve groove is positioned below the valve needle, a bidirectional valve port is arranged in the valve groove, the joint lower cover is provided with a transfusion channel, the transfusion channel is positioned below the bidirectional valve port, after the liquid medicine enters the valve groove through the valve cavity and the valve hole in sequence, the bidirectional valve port is opened under the impact force of the liquid medicine, and the liquid medicine enters the transfusion channel through the bidirectional valve port.
Further, when the valve cavity is under the action of external negative pressure, the bidirectional valve port is opened, blood enters the valve cavity through the infusion channel after passing through the bidirectional valve port, the valve groove and the valve hole, the negative pressure disappears, and the bidirectional valve port is closed.
Furthermore, a liquid medicine inlet is formed in the top of the valve core.
Furthermore, the valve core is tower-shaped, and the inner diameter of the valve core is increased after being reduced from top to bottom.
Furthermore, the inner wall of the valve core is provided with a plurality of bulges which are propped against the outer wall of the valve needle, so that the friction force between the valve core and the valve needle is reduced, and the valve core is protected and sealed
Furthermore, the joint upper cover and the joint lower cover are connected to form a closed shell.
Furthermore, the joint upper cover is clamped with the middle cover.
Furthermore, the valve core and the bidirectional valve body are all silica gel products.
Compared with the prior art, the utility model has the advantages of:
(1) the needle-free zero-pressure transfusion joint of the utility model has the advantages that after the liquid medicine enters the valve groove through the valve cavity and the valve hole in sequence, the two-way valve port is opened under the impulsive force of the liquid medicine, the liquid medicine enters the transfusion channel through the two-way valve port, after the transfusion is finished, the liquid medicine does not flow into the valve cavity any more, the two-way valve port is not impacted by the liquid medicine any more, the two-way valve port is closed, and the liquid medicine or the blood of a patient can be prevented from; when blood is required to be drawn, the injector is drawn from the top of the valve core, so that when the valve cavity is subjected to negative pressure, the valve port is opened, blood enters the injector through the infusion channel via the bidirectional valve port, the valve groove, the valve hole and the valve cavity, and after the negative pressure disappears, the bidirectional valve port is closed, and the blood in the patient is prevented from continuously flowing out.
Compare with current malleation or negative pressure joint, this the utility model discloses a zero pressure infusion connects when infusion or bloodletting, can avoid the infusion to finish the time produce pressure, improves patient's infusion comfort level, simultaneously, can avoid liquid medicine or blood to pollute the infusion and connect, protection infusion environment, the medical personnel operation of being convenient for.
Drawings
FIG. 1 is an exploded view of a needle-free zero-pressure infusion connector according to an embodiment of the present invention;
fig. 2 is a schematic structural view of the two-way valve body in the embodiment of the present invention.
In the figure: 1-joint upper cover, 2-joint lower cover, 3-valve core, 4-middle cover, 5-bidirectional valve body, 6-valve cavity, 7-valve needle, 8-valve hole, 9-valve groove, 10-bidirectional valve port and 11-transfusion channel.
Detailed Description
The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, the embodiment of the present invention provides a needle-free zero-pressure infusion connector, which includes an upper connector cover 1 and a lower connector cover 2 that are connected to each other, the upper connector cover 1 and the lower connector cover 2 are connected to form a sealed housing, a valve core 3, a middle cover 4 and a two-way valve body 5 are sequentially arranged between the upper connector cover 1 and the lower connector cover 2 from top to bottom, and the valve core 3 and the two-way valve body 5 are silica gel products.
The connector upper cover 1 is clamped with the middle cover 4, the top of the valve core 3 is provided with a liquid medicine inlet, the valve core 3 is tower-shaped, the inner diameter is firstly reduced from top to bottom and then increased, the valve core 3 is internally provided with a hollow valve cavity 6, the middle cover 4 is provided with a valve needle 7, the valve needle 7 is in interference fit with the valve cavity 6, the valve hole 8 is formed in the valve needle 7, the inner wall of the valve core 3 is provided with a plurality of bulges, and the bulges are abutted to the outer wall of the valve needle 7, so that the friction between the valve needle 7 and.
Referring to fig. 2, a valve groove 9 is arranged on a bidirectional valve body 5, the valve groove 9 is positioned below a valve needle 7, a bidirectional valve port 10 is arranged in the valve groove 9, a transfusion channel 11 is arranged on a connector lower cover 2, the transfusion channel 11 is positioned below the bidirectional valve port 10, after medicine liquid sequentially passes through a valve cavity 6 and the valve hole 8 and enters the valve groove 9, the bidirectional valve port 10 is opened under the impact force of the medicine liquid, the medicine liquid enters the transfusion channel 11 through the bidirectional valve port 10, the medicine liquid does not flow into the valve cavity 6 after transfusion, the bidirectional valve port 10 is not impacted by the medicine liquid, and the bidirectional valve port 10 is closed, so that the medicine liquid or blood of a patient can be prevented from flowing back from the transfusion channel.
When blood is required to be drawn, the injector is drawn from the top of the valve core 3, so that the valve cavity 6 is opened towards the valve port 10 when receiving negative pressure, blood enters the injector through the two-way valve port 10, the valve groove 9, the valve hole 8 and the valve cavity 6 through the transfusion channel 11, and the two-way valve port 10 is closed after the negative pressure disappears, so that the blood in the patient is prevented from continuously flowing out.
Compare with current malleation or negative pressure joint, this the utility model discloses a zero pressure infusion connects when infusion or bloodletting, can avoid the infusion to finish the time produce pressure, improves patient's infusion comfort level, simultaneously, can avoid liquid medicine or blood to pollute the infusion and connect, protection infusion environment, the medical personnel operation of being convenient for.
The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.
Claims (8)
1. The utility model provides a needleless zero pressure infusion connects, includes interconnect's joint upper cover (1) and joint lower cover (2), its characterized in that: a valve core (3), a middle cover (4) and a bidirectional valve body (5) are sequentially arranged between the joint upper cover (1) and the joint lower cover (2) from top to bottom, a hollow valve cavity (6) is arranged in the valve core (3), a valve needle (7) is arranged on the middle cover (4), the valve needle (7) is in interference fit with the valve cavity (6), and a valve hole (8) is formed in the valve needle (7);
the bidirectional valve body (5) is provided with a valve groove (9), the valve groove (9) is located below the valve needle (7), a bidirectional valve port (10) is arranged in the valve groove (9), the joint lower cover (2) is provided with a liquid conveying channel (11), the liquid conveying channel (11) is located below the bidirectional valve port (10), after liquid medicine enters the valve groove (9) through the valve cavity (6) and the valve hole (8) in sequence, the bidirectional valve port (10) is opened under the impact force of the liquid medicine, and the liquid medicine enters the liquid conveying channel (11) through the bidirectional valve port (10).
2. The needle-free zero-pressure infusion connector of claim 1, wherein: when the valve cavity (6) is under the action of external negative pressure, the two-way valve port (10) is opened, blood enters the valve cavity (6) through the infusion channel (11) via the two-way valve port (10), the valve groove (9) and the valve hole (8), the negative pressure disappears, and the two-way valve port (10) is closed.
3. The needle-free zero-pressure infusion connector of claim 1, wherein: the top of the valve core (3) is provided with a liquid medicine inlet.
4. The needle-free zero-pressure infusion connector of claim 1, wherein: the valve core (3) is tower-shaped, and the inner diameter of the valve core is reduced from top to bottom and then increased.
5. The needle-free zero-pressure infusion connector of claim 1, wherein: the inner wall of the valve core (3) is provided with a plurality of bulges which are propped against the outer wall of the valve needle (7), so that the friction force between the valve core and the valve needle (7) is reduced, and the valve core is protected and sealed.
6. The needle-free zero-pressure infusion connector of claim 1, wherein: the joint upper cover (1) and the joint lower cover (2) are connected to form a closed shell.
7. The needle-free zero-pressure infusion connector of claim 1, wherein: the joint upper cover (1) is clamped with the middle cover (4).
8. The needle-free zero-pressure infusion connector of claim 1, wherein: the valve core (3) and the bidirectional valve body (5) are all silica gel products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920626788.5U CN210056983U (en) | 2019-05-05 | 2019-05-05 | Needleless zero-pressure infusion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920626788.5U CN210056983U (en) | 2019-05-05 | 2019-05-05 | Needleless zero-pressure infusion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210056983U true CN210056983U (en) | 2020-02-14 |
Family
ID=69450190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920626788.5U Active CN210056983U (en) | 2019-05-05 | 2019-05-05 | Needleless zero-pressure infusion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210056983U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114177408A (en) * | 2021-12-08 | 2022-03-15 | 江苏采纳医疗科技有限公司 | Adjustable needleless infusion joint |
-
2019
- 2019-05-05 CN CN201920626788.5U patent/CN210056983U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114177408A (en) * | 2021-12-08 | 2022-03-15 | 江苏采纳医疗科技有限公司 | Adjustable needleless infusion joint |
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