CN211798008U - Needle-free dosing connector - Google Patents
Needle-free dosing connector Download PDFInfo
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- CN211798008U CN211798008U CN202020039984.5U CN202020039984U CN211798008U CN 211798008 U CN211798008 U CN 211798008U CN 202020039984 U CN202020039984 U CN 202020039984U CN 211798008 U CN211798008 U CN 211798008U
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- shell
- positioning groove
- needle
- sealing ring
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Abstract
The utility model discloses a needle-free dosing connector, which comprises a locking connecting piece, a compression sealing ring and a shell which are coaxially arranged from inside to outside in sequence, wherein the locking connecting piece comprises a luer connector, a positioning groove and a conical tube which are sequentially connected from top to bottom; a plurality of upper anti-sliding ribs and a plurality of lower anti-sliding ribs are arranged on the outer circumferential surface of the luer connector; an annular bulge and a plurality of installation guide grooves are arranged on the outer groove wall of the positioning groove; the compression sealing ring is sleeved on the conical pipe; an annular groove and a plurality of installation guide platforms are arranged on the inner wall surface of the upper part of the shell; the outer circumferential surface of the upper part of the shell is a smooth surface; a fluid direction mark is arranged on the outer wall of the middle part of the shell; and locking threads are arranged on the outer circumferential surface of the lower part of the shell. The utility model discloses a exempt from needle and add medicine joint, the firm in connection of locking connecting piece and shell is provided with only smooth muscle on the locking connecting piece, prevents that the hand from sliding and dropping.
Description
Technical Field
The utility model relates to a needle-free dosing joint, which belongs to the field of medical instruments.
Background
With the rapid development of intravenous infusion, a needle-free closed infusion technology is also widely applied to clinic, needle-free infusion refers to a device which can repeatedly convey or extract liquid to an infusion pipeline without puncture, and a needle-free infusion joint is adopted to provide a flow channel and an injection port for infusion. Most of the conventional needleless infusion connectors are complex in structure, complex in operation and poor in tightness, liquid return blockage and residual liquid medicine in the connectors cannot be eliminated, and exponential infection probability is brought to patients in the infusion process.
Most specifications of needle-free dosing connectors in the market are bypass type liquid channels, the phenomenon of torrent can occur when the bypass type liquid channels meet the front blocking wall of a side port in infusion, bubbles are likely to be generated, and meanwhile, the bypass type liquid channels are always blocked by a compression sealing ring from time to time in the infusion, so that the infusion process is stopped; in addition, the residual liquid medicine in the joint is also in the joint. The stability and the safety of the infusion process are influenced, thereby influencing the infusion of patients.
In order to solve the above problems, CN201911066378.0 discloses a needle-free dosing connector, which adopts a seamless filling structure, and includes a locking connector, a compression sealing ring and a housing coaxially arranged from inside to outside in sequence, and has the advantages of simple structure, smooth use, simple and convenient operation, high safety, no liquid return and liquid blocking phenomenon, but the connection structure of the locking connector and the housing needs to be improved, and the needle-free dosing connector lacks a necessary anti-slip mechanism, and may slip during operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art's defect, providing a exempt from needle and add medicine joint, the firm in connection of locking connecting piece and shell is provided with only smooth muscle on the locking connecting piece, prevents that the hand from sliding and dropping.
The technical scheme for realizing the purpose is as follows: the utility model provides a exempt from needle and add medicine joint, includes locking connecting piece, compression sealing ring and the shell of coaxial setting in proper order from inside to outside, wherein:
the locking connecting piece comprises a luer connector, a positioning groove and a conical tube which are sequentially connected from top to bottom, and a notch of the positioning groove is arranged downwards; through holes which are communicated up and down are respectively formed in the middle of the luer connector and the middle of the groove bottom of the positioning groove, the through holes of the luer connector, the through holes of the positioning groove and the conical tube are sequentially communicated from top to bottom to form a straight-through infusion flow channel, the lower end opening of the conical tube comprises two dispersion ports, and the two dispersion ports are symmetrically arranged along the axis of the conical tube;
a plurality of upper sliding ribs and a plurality of lower sliding ribs are arranged on the outer circumferential surface of the luer connector, and the upper sliding ribs are arranged along the same circumference; the lower anti-slip ribs are arranged along the same circumference; the lower anti-slip ribs are correspondingly positioned below the upper anti-slip ribs one by one;
an annular bulge and a plurality of installation guide grooves are arranged on the outer groove wall of the positioning groove, and the annular bulge and the positioning groove are coaxially arranged; the installation guide grooves are arranged along the same circumference and are respectively positioned below the annular bulge;
the compression sealing ring is sleeved on the conical pipe, the upper part of the compression sealing ring is inserted into the positioning groove, and the upper end surface of the compression sealing ring is abutted against the bottom of the positioning groove;
the inner cavity of the shell is of a conical structure with a large upper part and a small lower part, the shell is sleeved outside the compression sealing ring, and the upper part of the shell is sleeved outside the positioning groove;
an annular groove and a plurality of installation guide platforms are arranged on the inner wall surface of the upper part of the shell, the annular bulge is clamped in the annular groove, and the installation guide platforms are clamped in the installation guide grooves in a one-to-one correspondence manner;
the outer circumferential surface of the upper part of the shell is a smooth surface;
a fluid direction mark is arranged on the outer wall of the middle part of the shell;
and locking threads are arranged on the outer circumferential surface of the lower part of the shell.
In the above needle-free medicine adding connector, the shape of the dispersion port of the locking connector is elliptical.
The needle-free dosing connector is characterized in that the luer connector of the locking connecting piece is of a hollow internal thread structure.
In the above needle-free dosing connector, the lower portion of each mounting guide groove is in a V shape.
The utility model discloses a exempt from needle and add medicine joint, the firm in connection of locking connecting piece and shell is provided with only smooth muscle on the locking connecting piece, prevents that the hand from sliding and dropping, simple structure, and it is smooth and easy to use, easy operation is convenient, and the security is high, does not have back liquid stifled liquid phenomenon.
Drawings
FIG. 1 is a structural diagram of a needle-free dosing connector of the present invention;
FIG. 2 is a schematic view of the needle-free dosing connector of the present invention;
FIG. 3 is a cross-sectional view of the needle-free dosing connector of the present invention;
FIG. 4 is a schematic view of the construction of the tapered tube of the locking connection;
FIG. 5 is a schematic view of the construction of two dispersion ports of the tapered tube of the locking connection;
FIG. 6 is a schematic view of the needle-free dosing joint and the external joint of the present invention;
FIG. 7 is a view showing a usage state of the needle-free dosing connector of the present invention;
FIG. 8 is a schematic view of the configuration of the indentation of the head of the compression seal ring.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following detailed description is provided with reference to the accompanying drawings:
referring to fig. 1, 2, 3, 4 and 5, a preferred embodiment of the present invention is a needle-free dosing connector, which includes a locking connector 1, a compression sealing ring 2 and a housing 3 coaxially disposed from inside to outside.
The locking connecting piece 1 comprises a luer connector 1a, a positioning groove 1c and a conical tube 1d which are sequentially connected from top to bottom, the luer connector 1a adopts a hollow internal thread structure, an upper sliding rib 14 and a plurality of lower sliding ribs 15 are arranged on the outer circumferential surface of the luer connector 1a, and the upper sliding ribs 14 are arranged along the same circumference; the lower anti-slip ribs 15 are arranged along the same circumference; the lower anti-slip ribs 15 are correspondingly arranged below the upper anti-slip ribs 14, so that an operator can prevent slipping when using the anti-slip shoe. The notch of the positioning groove 1c is arranged downwards, an annular bulge 1e and a plurality of installation guide grooves 16 are arranged on the outer groove wall of the positioning groove 1c, and the annular bulge 1e and the positioning groove 1c are coaxially arranged; the installation guide grooves 16 are arranged along the same circumference, the installation guide grooves 16 are respectively positioned below the annular protrusion 1e, and the lower part of each installation guide groove 16 is in a V shape and used for displaying the connection direction of the locking connecting piece 1; through holes which are communicated up and down are respectively formed in the middle of the luer connector 1a and the middle of the groove bottom 11 of the positioning groove 1c, and the through hole of the luer connector 1a, the through hole of the positioning groove 1c and the conical tube 1d are sequentially communicated from top to bottom to form a straight-through transfusion flow channel 13. The lower end opening of the conical tube 1d comprises two dispersion openings 14, the two dispersion openings 14 are symmetrically arranged along the axis of the conical tube 1d (see fig. 5), and the dispersion openings 14 are oval. The straight-through feed channel 13 can be formed by split-die injection molding. The two dispersion ports 14 form the straight-through transfusion flow passage 13 into a straight-through dispersion type flow passage.
The compression sealing ring 2 is sleeved on the conical tube 1d, the upper part of the compression sealing ring 2 is inserted into the positioning groove 1c, and the upper end surface of the compression sealing ring 2 abuts against the groove bottom 11 of the positioning groove.
The inner cavity 31 of the shell 3 is of a conical structure with a large upper part and a small lower part, the shell 3 is sleeved outside the compression sealing ring 2, and the upper part of the shell 3 is sleeved outside the positioning groove 1 c; an annular groove and a plurality of installation guide platforms are arranged on the inner wall surface of the upper portion of the shell 3, the annular groove is matched with the annular protrusion 1e, the annular protrusion 1e is clamped in the annular groove, and the installation guide platforms are clamped in the installation guide grooves 16 in a one-to-one correspondence mode, so that the shell 3 is firmly connected with the locking connecting piece 1. The outer circumference surface of the upper part of the shell 3 is a smooth surface, and the outer wall of the middle part of the shell 3 is provided with a fluid direction mark 3b, so that the operation convenience is improved. A locking screw 3c is provided on an outer circumferential surface of a lower portion of the housing 3.
The compression sealing ring is made of compressible soft materials. The compression sealing ring 2 is made of medical grade soft material, has higher flexibility, and is safe and harmless to patients. The inner circumferential surface of the shell 3 radially extrudes and compresses the lower end of the sealing ring 2, and two symmetrically arranged dispersion ports 14 at the lower end of the conical tube 1d are closed by the extrusion of the lower end of the sealing ring 2 to form holding sealing.
Referring to fig. 6, 7 and 8, the needle-free dosing connector of the present invention, when in use, the luer 1a of the locking connector 1 is connected to the medical line connector, the top end of the external connector 6 is inserted into the lower opening of the outer sleeve 1 and contacts with the bottom end of the compression sealing ring 2, after the external connector 6 upwardly extrudes the compression sealing ring 2 to a certain position, the straight-through infusion channel 13 of the locking connector is exposed and communicated with the infusion inner cavity of the external connector 6, so as to directly dredge the liquid medicine.
Referring to fig. 6 again, before the external joint 6 and the needle-free dosing joint of the present invention are butted, the compression sealing ring 2 is in a sealing state at this time, which prevents the air from entering the port of the housing 3, and the aseptic effect of the dosing joint is ensured in a sealing manner, and a powerful protection barrier is formed with the external barrier, the thickness and height of the upper part of the compression sealing ring effectively provide the reset kinetic energy, and the upper part of the compression sealing ring is reset in a very short time after the infusion is completed, thereby ensuring the safety and reliability of the infusion.
Referring to fig. 7, in the butt joint of the external joint 6 and the needle-free dosing joint of the present invention, before the lower end of the compression sealing ring is slowly pushed open by the bottom end of the tapered tube 1d of the locking connector 1, the gap between the housing 3 and the inner cavity of the locking connector 1 is not yet filled. Referring to fig. 8, the lower end of the compression sealing ring 2 is slowly pushed open by the tapered tube 1d of the locking connector 1 to form a notch 23, and since the perimeter size of the notch 23 is smaller than or equal to the diameter size of the wrapped surface of the tapered tube 1d of the locking connector, it can be determined that the liquid medicine cannot pass through the notch and enter the inner cavity of the medicine adding connector, and the reliability of the infusion process is ensured. And after the lower end of the compression sealing ring 2 is completely pushed open by the conical tube 1d of the locking connecting piece, the straight-through transfusion flow passage 13 is communicated with the transfusion inner cavity of the outer joint 6, thereby avoiding the possibility that the liquid medicine flows into the unfilled gap in the transfusion process, avoiding the pollution of the secondary liquid medicine and protecting the patient.
The utility model discloses a seamless packing exempts from needle and adds medicine and connects, is provided with annular protrusion 1e and a plurality of installation guide way 16 on positioning groove 1 c's the outer cell wall, is provided with annular groove and a plurality of installation guide platform on the internal face on shell 3's upper portion, and annular protrusion 1e joint is in annular groove, and a plurality of installation guide platform one-to-one ground card is in a plurality of installation guide ways 16, like this, shell 3 and locking connecting piece 1 firm in connection. The upper anti-slip ribs 14 and the plurality of lower anti-slip ribs 15 on the outer circumferential surface of the luer 1a can prevent slipping when used by an operator.
To sum up, the utility model discloses an exempt from needle and add medicine joint, the firm in connection of locking connecting piece and shell is provided with only smooth muscle on the locking connecting piece, prevents that the hand from sliding and dropping, simple structure, and it is smooth and easy to use, easy operation convenience, the security is high, does not have the stifled liquid phenomenon of liquid that returns.
It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.
Claims (4)
1. A needle-free dosing joint comprises a locking connecting piece, a compression sealing ring and a shell which are coaxially arranged from inside to outside in sequence, and is characterized in that,
the locking connecting piece comprises a luer connector, a positioning groove and a conical tube which are sequentially connected from top to bottom, and a notch of the positioning groove is arranged downwards; through holes which are communicated up and down are respectively formed in the middle of the luer connector and the middle of the groove bottom of the positioning groove, the through holes of the luer connector, the through holes of the positioning groove and the conical tube are sequentially communicated from top to bottom to form a straight-through infusion flow channel, the lower end opening of the conical tube comprises two dispersion ports, and the two dispersion ports are symmetrically arranged along the axis of the conical tube;
a plurality of upper sliding ribs and a plurality of lower sliding ribs are arranged on the outer circumferential surface of the luer connector, and the upper sliding ribs are arranged along the same circumference; the lower anti-slip ribs are arranged along the same circumference; the lower anti-slip ribs are correspondingly positioned below the upper anti-slip ribs one by one;
an annular bulge and a plurality of installation guide grooves are arranged on the outer groove wall of the positioning groove, and the annular bulge and the positioning groove are coaxially arranged; the installation guide grooves are arranged along the same circumference and are respectively positioned below the annular bulge;
the compression sealing ring is sleeved on the conical pipe, the upper part of the compression sealing ring is inserted into the positioning groove, and the upper end surface of the compression sealing ring is abutted against the bottom of the positioning groove;
the inner cavity of the shell is of a conical structure with a large upper part and a small lower part, the shell is sleeved outside the compression sealing ring, and the upper part of the shell is sleeved outside the positioning groove;
an annular groove and a plurality of installation guide platforms are arranged on the inner wall surface of the upper part of the shell, the annular bulge is clamped in the annular groove, and the installation guide platforms are clamped in the installation guide grooves in a one-to-one correspondence manner;
the outer circumferential surface of the upper part of the shell is a smooth surface;
a fluid direction mark is arranged on the outer wall of the middle part of the shell;
and locking threads are arranged on the outer circumferential surface of the lower part of the shell.
2. The needle-free dosing adaptor of claim 1, wherein the dispensing opening of the locking connector is oval in shape.
3. The needle-free dosing adaptor according to claim 1, wherein the luer of the locking connector is of a hollow internal thread structure.
4. The needle-free dosing adaptor of claim 1, wherein a lower portion of each mounting guide slot is V-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020039984.5U CN211798008U (en) | 2020-01-09 | 2020-01-09 | Needle-free dosing connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020039984.5U CN211798008U (en) | 2020-01-09 | 2020-01-09 | Needle-free dosing connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211798008U true CN211798008U (en) | 2020-10-30 |
Family
ID=73048928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020039984.5U Active CN211798008U (en) | 2020-01-09 | 2020-01-09 | Needle-free dosing connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211798008U (en) |
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2020
- 2020-01-09 CN CN202020039984.5U patent/CN211798008U/en active Active
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