CN215608785U - Pipe joint for medical instrument - Google Patents
Pipe joint for medical instrument Download PDFInfo
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- CN215608785U CN215608785U CN202121341097.4U CN202121341097U CN215608785U CN 215608785 U CN215608785 U CN 215608785U CN 202121341097 U CN202121341097 U CN 202121341097U CN 215608785 U CN215608785 U CN 215608785U
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- hole
- luer connector
- liquid
- rubber plug
- pipe joint
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Abstract
The utility model discloses a pipeline connector for medical instruments, which comprises a male luer connector and a female luer connector which are matched for use, wherein a first through hole is formed in the male luer connector, and a second through hole communicated with the first through hole is formed in the female luer connector. The anti-backflow component for preventing liquid in the first through hole from flowing back is arranged at the position, close to the first through hole, of the second through hole, the anti-backflow component comprises a fixing seat and a plugging piece which are matched for use, the fixing seat is connected in the second through hole in a clamping mode, a containing cavity with an opening facing the second through hole is formed in the fixing seat, and a liquid guiding channel penetrating through the bottom of the fixing seat is integrally arranged at the bottom of the containing cavity. The blocking piece is clamped between the fixed seat and the male luer connector and can block the liquid guiding channel in a one-way mode. The pipeline connector can effectively reduce the liquid backflow phenomenon and improve the use safety of the pipeline connector.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a pipeline connector for medical equipment.
Background
At present, the medical joint is widely used in clinical medical treatment and is mainly used for connecting pipes or pipelines. The luer connector is a standardized micro non-seepage connector, and is connected with a matched female luer connector through a male luer connector, so that the management of liquid and gaseous medical fluids can be greatly simplified. Luer connectors can be used for switching four infusion bags on the premise of not plugging and unplugging infusion needles, but because the existing luer connectors lack effective sealing structures, liquid backflow is easily caused when the infusion bags are switched, and normal infusion of patients is affected.
Disclosure of Invention
In order to overcome the above disadvantages, the present invention provides a pipe connector for medical devices, which can effectively reduce the liquid backflow phenomenon and improve the safety of use.
In order to achieve the above purposes, the utility model adopts the technical scheme that: the utility model provides a pipe connection head for medical instrument, includes that the supporting public luer connects, female luer connects that uses, be equipped with first through-hole in the public luer connects, female luer connects be equipped with the second through-hole of first through-hole intercommunication. The anti-backflow component for preventing liquid in the first through hole from flowing back is arranged at the position, close to the first through hole, of the second through hole, the anti-backflow component comprises a fixing seat and a plugging piece which are matched for use, the fixing seat is connected in the second through hole in a clamping mode, a containing cavity with an opening facing the second through hole is formed in the fixing seat, and a liquid guiding channel penetrating through the bottom of the fixing seat is integrally arranged at the bottom of the containing cavity. The blocking piece is clamped between the fixed seat and the male luer connector and can block the liquid guiding channel in a one-way mode.
The utility model has the beneficial effects that: the liquid guiding channel can be blocked in a one-way mode through the blocking piece, then the communication between the first through hole and the second through hole is cut off, liquid backflow is avoided, and the use safety of the pipeline connector is improved.
The blocking piece comprises a blocking clamping ring clamped between the fixed seat and the male luer connector, a rubber plug capable of blocking the liquid guiding channel is arranged at the axis of the blocking clamping ring, and a plurality of elastic connecting rods connected with the blocking clamping ring are uniformly distributed on the outer wall of the rubber plug; when the elastic connecting rod is in a natural state, the rubber plug head is embedded into the liquid guiding channel, and a gap exists between the rubber plug head and the liquid guiding channel.
When liquid enters from the second through hole, the liquid can enter the liquid guiding channel through the containing cavity, the rubber plug head is subjected to liquid pressure and exits the liquid guiding channel, and then the liquid can enter the first through hole from the liquid guiding channel, so that a normal transfusion function is realized; when liquid flows back from the first through hole, the rubber plug head is under reverse liquid pressure and moves towards the liquid guiding channel until the rubber plug head can block the liquid guiding channel, and then the liquid is blocked from flowing back towards the first through hole. The rubber plug head can be matched with the action of the rubber plug head through the arrangement of the elastic connecting rod, and the rubber plug head can be pulled back to the middle position through the elastic acting force of the elastic connecting rod, so that the rubber plug head can smoothly enter the liquid guide channel.
Further, the front end part of the rubber plug head is in a circular truncated cone-shaped structure, and the diameter of a large circular surface of the circular truncated cone-shaped structure is larger than the inner diameter of the liquid guiding channel.
Furthermore, the bottom of the fixed seat is provided with a containing groove, the plugging clamping ring is abutted against the bottom of the fixed seat, and a supporting part capable of being abutted into the containing groove is arranged on the plugging clamping ring. The supporting force of the fixed seat to the plugging clamping ring is enhanced through the arrangement of the supporting part and the accommodating groove.
Further, the second through hole comprises a liquid inlet hole and a diffusion hole which are coaxial and mutually communicated, and the inner diameter of the diffusion hole is larger than that of the liquid inlet hole. The inner wall of the diffusion hole is provided with an annular clamping groove, and the outer wall of the fixing seat is provided with a clamping block which can be clamped into the annular clamping groove. The fixing of the fixing seat and the female luer connector is realized through the matching of the clamping block and the annular clamping groove.
Further, a sealing gasket is arranged in the annular clamping groove in a sealing mode. The escape of liquid is effectively inhibited by the arrangement of the sealing gasket.
Further, one end of the female luer connector is provided with a protruding part, and one end of the male luer connector is provided with a concave cavity for accommodating the protruding part. And a buckle structure is arranged between the convex part and the concave cavity.
Drawings
FIG. 1 is a cut-away schematic view of an embodiment of the present invention;
FIG. 2 is a partial enlarged view of portion A of FIG. 1;
FIG. 3 is a cut-away schematic view of a backflow prevention assembly of an embodiment of the present invention;
fig. 4 is a schematic structural view of a block piece of the backflow prevention assembly according to an embodiment of the present invention.
In the figure:
1-male luer; 11-a first via; 12-a cavity; 2-female luer fitting; 21-liquid inlet hole; 22-diffusion holes; 221-ring slot; 23-a boss; 3-fixing the base; 31-a cavity; 32-a drainage channel; 33-containing groove; 34-a fixture block; 4-plugging piece; 41-plugging a clamping ring; 411-a support portion; 42-rubber stopper; 43-an elastic link; 5-sealing washer.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.
Examples
Referring to fig. 1-4, the pipe connector for medical instruments of the present invention includes a male luer connector 1 and a female luer connector 2, wherein the male luer connector 1 is provided with a first through hole 11, and the female luer connector 2 is provided with a second through hole communicated with the first through hole 11. The second through hole is close to first through hole 11 department is equipped with the backflow prevention subassembly that prevents the liquid backward flow in the first through hole 11, backflow prevention subassembly is including supporting fixing base 3, shutoff piece 4 that uses, 3 joints of fixing base are in the second through hole, and it is equipped with the appearance chamber 31 of opening towards the second through hole on it, the bottom that holds chamber 31 an organic whole is provided with and runs through draw liquid passageway 32 of 3 bottoms of fixing base. The plugging piece is clamped between the fixed seat 3 and the male luer connector 1 and can be used for plugging the liquid guiding channel 32 in a one-way mode. The blocking piece 4 comprises a blocking clamping ring 41 clamped between the fixed seat 3 and the male luer 1, a rubber plug 42 capable of blocking the liquid guiding channel 32 is arranged at the axis of the blocking clamping ring 41, and a plurality of elastic connecting rods 43 connected with the blocking clamping ring 41 are uniformly distributed on the outer wall of the rubber plug 42; when the elastic connecting rod 43 is in a natural state, the rubber plug 42 is partially embedded into the liquid guide channel 32, and a gap exists between the rubber plug 42 and the liquid guide channel 32.
When liquid enters from the second through hole, the liquid can enter the liquid guiding channel 32 through the containing cavity 31, the rubber plug 42 is subjected to liquid pressure and exits the liquid guiding channel 32, and then the liquid can enter the first through hole 11 from the liquid guiding channel 32, so that a normal transfusion function is realized; when the liquid flows back from the first through hole 11, the rubber plug 42 is subjected to a reverse liquid pressure and moves towards the liquid guiding channel 32 until the rubber plug can block the liquid guiding channel 32, so that the liquid is blocked from flowing back to the first through hole 11. The rubber plug 42 can be matched with the action of the rubber plug 42 through the arrangement of the elastic connecting rod 43, and the rubber plug 42 can be pulled back to the middle position through the elastic acting force of the elastic connecting rod 43, so that the rubber plug can smoothly enter the liquid guide channel 32. The liquid guiding channel 32 can be blocked in a one-way mode through the blocking piece 4, so that the communication between the first through hole 11 and the second through hole is blocked, liquid backflow is avoided, and the use safety of the pipeline connector is improved.
In this embodiment, the front end of the rubber plug 42 is a truncated cone structure, and the diameter of the large circular surface of the truncated cone structure is larger than the inner diameter of the liquid guiding channel.
One end of the plugging clamping ring 41 is abutted against the fixed seat 3, and the other end of the plugging clamping ring is abutted against the male luer connector 1. In order to improve the fixation of the plugging clamp ring 41, the bottom of the fixed seat 3 is provided with a containing groove 33, and the plugging clamp ring 41 is provided with a supporting part 411 which can be abutted to the containing groove 33. The supporting force of the fixing seat 3 on the plugging clamping ring 41 is enhanced by the arrangement of the supporting part 411 and the accommodating groove 33.
The second through hole comprises a liquid inlet hole 21 and a diffusion hole 22 which are coaxial and mutually communicated, and the inner diameter of the diffusion hole 22 is larger than that of the liquid inlet hole 21. The inner wall of the diffusion hole 22 is provided with an annular clamping groove 221, and the outer wall of the fixed seat 3 is provided with a clamping block 34 which can be clamped into the annular clamping groove 221. And a sealing gasket 5 is also arranged in the annular clamping groove 221 in a sealing manner. The fixing of the fixing seat 3 and the female luer connector 2 is realized through the matching of the clamping block 34 and the annular clamping groove 221, and the liquid is effectively inhibited from escaping from the annular clamping groove 221 to a position between the female luer connector 2 and the fixing seat 3 through the arrangement of the sealing washer 5.
One end of the female luer connector 2 is provided with a convex part 23, one end of the male luer connector 1 is provided with a concave cavity 12 for accommodating the convex part 23, and a buckling structure is arranged between the convex part 23 and the concave cavity 12. Specifically, the buckle of the buckle structure is arranged on the outer wall of the protruding portion 23, and the clamping groove of the buckle structure is arranged on the inner side wall of the cavity 12.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (7)
1. A pipeline connector for medical instruments comprises a male luer connector (1) and a female luer connector (2) which are matched for use, wherein a first through hole (11) is formed in the male luer connector (1), and a second through hole communicated with the first through hole (11) is formed in the female luer connector (2); the method is characterized in that: an anti-backflow assembly for preventing liquid in the first through hole (11) from flowing back is arranged at the position, close to the first through hole (11), of the second through hole, the anti-backflow assembly comprises a fixing seat (3) and a blocking piece (4) which are used in a matched mode, the fixing seat (3) is clamped in the second through hole, a containing cavity (31) with an opening facing the second through hole is formed in the anti-backflow assembly, and a liquid guiding channel (32) penetrating through the bottom of the fixing seat (3) is integrally arranged at the bottom of the containing cavity (31); the blocking piece (4) is clamped between the fixed seat (3) and the male luer connector (1) and can block the liquid guide channel (32) in a one-way mode.
2. A pipe joint according to claim 1, wherein: the blocking piece (4) comprises a blocking clamping ring (41) clamped between the fixed seat (3) and the male luer connector (1), a rubber plug head (42) capable of blocking the liquid guiding channel (32) is arranged at the axis of the blocking clamping ring (41), and a plurality of elastic connecting rods (43) connected with the blocking clamping ring (41) are uniformly distributed on the outer wall of the rubber plug head (42); when the elastic connecting rod (43) is in a natural state, the rubber plug head (42) is partially embedded into the liquid guide channel (32), and a gap exists between the rubber plug head (42) and the liquid guide channel (32).
3. A pipe joint according to claim 2, wherein: the front end part of the rubber plug head (42) is in a round table structure, and the diameter of the large round surface of the round table structure is larger than the inner diameter of the liquid guiding channel (32).
4. A pipe joint according to claim 3, wherein: the bottom of the fixed seat (3) is provided with a containing groove (33), the plugging clamping ring (41) abuts against the bottom of the fixed seat (3), and a supporting part (411) which can abut against the containing groove (33) is arranged on the plugging clamping ring.
5. A pipe joint according to any one of claims 1 to 4, wherein: the second through hole comprises a liquid inlet hole (21) and a diffusion hole (22) which are coaxial and mutually communicated, and the inner diameter of the diffusion hole (22) is larger than that of the liquid inlet hole (21); be equipped with ring groove (221) on the inner wall of diffusion hole (22), be equipped with on the outer wall of fixing base (3) and connect by the joint fixture block (34) in ring groove (221).
6. A pipe joint according to claim 5, wherein: and a sealing gasket (5) is also arranged in the annular clamping groove (221) in a sealing manner.
7. A pipe joint according to claim 1, wherein: a convex part (23) is arranged at one end of the female luer connector (2), and a concave cavity (12) for accommodating the convex part (23) is arranged at one end of the male luer connector (1); a buckling structure is arranged between the convex part (23) and the concave cavity (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121341097.4U CN215608785U (en) | 2021-06-16 | 2021-06-16 | Pipe joint for medical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121341097.4U CN215608785U (en) | 2021-06-16 | 2021-06-16 | Pipe joint for medical instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215608785U true CN215608785U (en) | 2022-01-25 |
Family
ID=79943680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121341097.4U Active CN215608785U (en) | 2021-06-16 | 2021-06-16 | Pipe joint for medical instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215608785U (en) |
-
2021
- 2021-06-16 CN CN202121341097.4U patent/CN215608785U/en active Active
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