CN110694137B - Seamless filling needle-free dosing connector - Google Patents
Seamless filling needle-free dosing connectorDownload PDFInfo
- Publication number
- CN110694137B CN110694137BCN201911065849.6ACN201911065849ACN110694137BCN 110694137 BCN110694137 BCN 110694137BCN 201911065849 ACN201911065849 ACN 201911065849ACN 110694137 BCN110694137 BCN 110694137B
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- sealing ring
- seamless
- compression sealing
- cavity
- shell
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- 238000007906compressionMethods0.000claimsabstractdescription66
- 230000006835compressionEffects0.000claimsabstractdescription65
- 238000007789sealingMethods0.000claimsabstractdescription62
- 239000003814drugSubstances0.000claimsabstractdescription24
- 239000007788liquidSubstances0.000claimsabstractdescription21
- 238000001802infusionMethods0.000claimsdescription20
- 239000007779soft materialSubstances0.000claimsdescription4
- 230000003247decreasing effectEffects0.000claimsdescription3
- 239000012530fluidSubstances0.000claimsdescription3
- 238000000034methodMethods0.000description4
- 238000010586diagramMethods0.000description3
- 230000004888barrier functionEffects0.000description2
- 230000007547defectEffects0.000description1
- 230000000694effectsEffects0.000description1
- 238000005516engineering processMethods0.000description1
- 208000015181infectious diseaseDiseases0.000description1
- 238000002347injectionMethods0.000description1
- 239000007924injectionSubstances0.000description1
- 238000001990intravenous administrationMethods0.000description1
- 210000001503jointAnatomy0.000description1
- 238000012986modificationMethods0.000description1
- 230000004048modificationEffects0.000description1
- 239000000243solutionSubstances0.000description1
Images
Classifications
- 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
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M2039/0205—Access sites for injecting media
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
Technical Field
The invention relates to a seamless filling needle-free dosing connector, and 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 airtightness, and residual liquid medicine in the connectors cannot be eliminated, so that the exponential infection probability of a patient in the infusion process is brought.
Meanwhile, the needle-free joint seals the residual gap, so that the residual gap always remains in the needle-free medicine adding joint more or less in the process of infusion; the liquid medicine is doped with the residual liquid medicine in the previous round during reuse, so that the safety of the liquid medicine conveying at this time is influenced, and the subsequent reuse is influenced.
In order to solve the problems, the needleless dosing connector with the seamless filling structure is designed, and the influence caused by the residual gap of the inner cavity of the connector is eliminated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a seamless filling needle-free dosing connector, which adopts a seamless filling structure, extrudes and compresses a sealing ring, and a seamed cavity is immediately converted into a seamless cavity, so that residual liquid medicine cannot be left in the seamless cavity during dredging of the liquid medicine, and the transfusion of a patient cannot be influenced.
The technical scheme for realizing the purpose is as follows: the utility model provides a seamless filling exempts from needle and adds medicine and connects, 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, and the through holes of the luer connector, the through holes of the positioning groove and the conical pipe are sequentially communicated from top to bottom to form a straight-through infusion flow channel;
the compression sealing ring is sleeved on the conical tube and comprises a tail part, a tooth-shaped part and a head part which are sequentially connected from top to bottom, the tail part is inserted into the positioning groove, and the upper end surface of the tail part 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; locking threads are arranged on the outer circumferential surface of the lower part of the shell;
and a compression sealing ring accommodating cavity is formed between the inner wall surface of the shell and the outer wall surface of the conical tube, and when the compression sealing ring is in a full compression state, the compression sealing ring is filled in the compression sealing ring accommodating cavity to form a seamless filling state.
The seamless filling needle-free dosing connector comprises a locking connecting piece, a tapered tube and a shell, wherein the tapered tube of the locking connecting piece has a draft taper of 3 degrees +/-1 degree, and the tapered structure of the inner cavity of the shell has a draft taper of 8 degrees +/-1 degree.
According to the seamless filling needle-free dosing connector, the tooth-shaped part of the compression sealing ring consists of 6 outer teeth and 5 inner teeth, and the outer teeth and the inner teeth are sequentially arranged at intervals from top to bottom;
the maximum outer diameter of the outer teeth is 5.2 +/-0.1 mm, and the outer diameter sizes of the 6 outer teeth are sequentially decreased by 0.1mm from top to bottom;
the biggest external diameter of internal tooth is 2.1 +/-0.1 mm, 5 external diameter sizes of internal tooth from top to bottom progressively decrease 0.1mm in proper order.
The seamless filling needle-free dosing connector comprises a shell, a positioning groove is formed in the shell, an annular protrusion is arranged on the outer groove wall of the positioning groove of the locking connecting piece, the annular protrusion and the positioning groove are coaxially arranged, the inner wall face of the upper portion of the shell is provided with an annular groove matched with the annular protrusion, and the annular protrusion is clamped in the annular groove.
The seamless filling needle-free dosing connector is characterized in that the luer connector of the locking connecting piece is of a hollow internal thread structure, and a plurality of strength ribs are arranged on the outer circumferential surface of the luer connector.
The seamless filling needle-free dosing connector is characterized in that the outer circumferential surface of the upper portion of the shell is a smooth surface, and the outer wall of the middle of the shell is provided with a fluid direction mark.
The seamless filling needle-free dosing connector comprises a shell, wherein the shell is provided with a sealing ring, and the sealing ring is arranged on the shell.
The seamless filling needle-free dosing connector comprises a compression sealing ring, wherein the compression sealing ring is arranged at the upper end of the compression sealing ring, and the compression sealing ring is arranged at the lower end of the compression sealing ring.
The seamless filling needle-free dosing connector is characterized in that the compression sealing ring is made of a compressible soft material.
The seamless filling needle-free dosing connector adopts a seamless filling type structure, the sealing ring is extruded and compressed, and the seamed cavity is immediately converted into a seamless cavity, so that residual liquid medicine cannot be left in the seamless cavity during dredging of the liquid medicine, infusion of a patient cannot be influenced, the seamless filling needle-free dosing connector is simple in structure, smooth to use, simple and convenient to operate, high in safety, and capable of completely filling gaps in the cavity and achieving seamless and residue-free infusion.
Drawings
FIG. 1 is a block diagram of a seamless fill needle-free dosing adaptor of the present invention;
FIG. 2 is a schematic view of an exploded structure of the seamless filling needle-free dosing adaptor of the present invention;
FIG. 3 is a cross-sectional view of a seamless fill needle-free medicated fitting of the present invention;
FIG. 4 is a schematic view of the seamless filling needle-free dosing adaptor and the external adaptor of the present invention;
FIG. 5 is a diagram of the use state (initial compression state) of the seamless filling needle-free dosing adaptor of the present invention;
fig. 6 is a diagram of the use state (fully compressed state) of the seamless fill needle-free medicated fitting of the present invention.
Detailed Description
In order that those skilled in the art will better understand the technical solution of the present invention, the following detailed description is given with reference to the accompanying drawings:
referring to fig. 1, 2 and 3, a preferred embodiment of the present invention, a seamless filling needle-free dosing adaptor, includes alocking connector 1, acompression sealing ring 2 and ahousing 3 coaxially arranged from inside to outside.
Thelocking connecting piece 1 comprises aluer connector 1a, apositioning groove 1c and aconical tube 1d which are sequentially connected from top to bottom, theluer connector 1a adopts a hollow internal thread structure, and a plurality ofstrength ribs 1b are arranged on the outer circumferential surface of theluer connector 1 a. The notch of thepositioning groove 1c is arranged downwards, anannular bulge 1e is arranged on the outer groove wall of thepositioning groove 1c, and theannular bulge 1e and thepositioning groove 1c are coaxially arranged; through holes which are communicated up and down are respectively formed in the middle of theluer connector 1a and the middle of thegroove bottom 11 of thepositioning groove 1c, and the through hole of theluer connector 1a, the through hole of thepositioning groove 1c and theconical tube 1d are sequentially communicated from top to bottom to form a straight-throughtransfusion flow channel 13.
Thecompression sealing ring 2 is sleeved on theconical tube 1d, thecompression sealing ring 2 comprises atail part 2a, a tooth-shaped part 2b and ahead part 2c which are sequentially connected from top to bottom, thetail part 2a is inserted into thepositioning groove 1c, and the upper end face of thetail part 2a abuts against thegroove bottom 11 of the positioning groove. The tooth-shaped part 2b of thecompression sealing ring 2 consists of 6external teeth 21 and 5internal teeth 22, and theexternal teeth 21 and theinternal teeth 22 are sequentially arranged at intervals from top to bottom; the maximum outer diameter of theexternal teeth 21 is 5.2 +/-0.1 mm, and the outer diameter sizes of the 6external teeth 21 are sequentially decreased by 0.1mm from top to bottom; the maximum outer diameter of theinternal teeth 22 is 2.1 +/-0.1 mm, and the outer diameter of 5internal teeth 22 is gradually reduced by 0.1mm from top to bottom. The bottom end of thehead 2c is sealed.
Theinner cavity 31 of theshell 3 is of a conical structure with a large upper part and a small lower part, theshell 3 is sleeved outside thecompression sealing ring 2, and the upper part of theshell 3 is sleeved outside thepositioning groove 1 c; the inner wall surface of the upper part of theshell 3 is provided with an annular groove matched with theannular bulge 1e, and theannular bulge 1e is clamped in the annular groove. The outer circumferential surface of the upper part of theshell 3 is asmooth surface 3a, and the outer wall of the middle part of theshell 3 is provided with afluid direction mark 3b, so that the convenience of operation is improved. Alocking screw 3c is provided on an outer circumferential surface of a lower portion of thehousing 3.
The draft taper of thetapered tube 1d of thelocking connector 1 is 3 ° ± 1 °, the draft taper of the tapered structure of the inner cavity of thehousing 3 is 8 ° ± 1 °, and a compression sealring accommodating cavity 4 is formed between the inner wall surface of thehousing 3 and the outer wall surface of thetapered tube 1 d. The shape of the tooth-shaped part 2b of thecompression sealing ring 2 is matched with the shape of the compression sealingring accommodating cavity 4, so that the support is closer and more fit.
Referring to fig. 6, when thecompression seal ring 2 is in the fully compressed state, thecompression seal ring 2 is filled in the compression sealring accommodating cavity 4 to form a seamless filling state, and the slotted cavity is immediately converted into a seamless cavity.
Thecompression sealing ring 2 is made of compressible soft materials, and thecompression sealing ring 2 is made of medical grade soft materials, so that the compression sealing ring has high flexibility, and is safe and harmless to patients. Thehead 2c of thecompression seal ring 2 is provided with anotch 23, and the inner circumferential surface of thehousing 3 radially presses thehead 2c of thecompression seal ring 2 to seal thenotch 23. The shape of thenotch 23 is a symmetrical arc shape, such as an ellipse, and the size of the perimeter of thenotch 23 is smaller than or equal to the outer perimeter of the position where theconical tube 1d of the locking connector is wrapped by thehead 2c of thecompression sealing ring 2 in the full compression state, so that theconical tube 1d is tightly inserted into thenotch 23 of thehead 2c of thecompression sealing ring 2 in the full compression state of thecompression sealing ring 2.
Referring to fig. 4, 5 and 6, in the seamless filling needle-free dosing connector of the present invention, when in use, theluer connector 1a of thelocking connector 1 is connected to a medical pipeline connector, the top end of theexternal connector 6 is inserted into the lower end opening of theouter sleeve 1 and contacts with the bottom end face of thehead 2c of thecompression sealing ring 2, and after theexternal connector 6 presses thecompression sealing ring 2 upward to a certain position, the straight-throughinfusion flow channel 13 of the locking connector is exposed and communicated with the infusion inner cavity of theexternal connector 6, so as to directly dredge the liquid medicine.
Referring to fig. 4, before theexternal joint 6 is butted with the seamless filling needle-free dosing joint of the invention, thecompression sealing ring 2 is in a sealing state at the moment, air at the port of theshell 3 is blocked, the aseptic effect of the dosing joint is ensured in a sealing manner, a powerful protection barrier is formed with the external barrier, the thickness and the height of thetail part 2a of the compression sealing ring effectively provide the reset kinetic energy, the reset is carried out in a very short time after the infusion is finished, and the safety and the reliability of the infusion are ensured.
Referring to fig. 5, in the butt joint of theexternal joint 6 and the seamless filling needle-free dosing joint of the present invention, before thehead 2c of the compression sealing ring is slowly pushed open by the bottom end of thetapered tube 1d of thelocking connector 1, the gap between thehousing 3 and the inner cavity of thelocking connector 1 is not yet filled.
Referring to fig. 6, thehead 2c of thecompression sealing ring 2 is slowly pushed by thetapered tube 1d of thelocking connector 1 to open and leak out of thenotch 23, and since the perimeter size of thenotch 23 is smaller than or equal to the diameter size of the wrapped surface of thetapered 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 thehead part 2c of thecompression sealing ring 2 is completely pushed open by theconical tube 1d of the locking connecting piece, the straight-throughtransfusion flow passage 13 is communicated with the transfusion inner cavity of theouter 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 seamless filling needle-free dosing connector adopts a seamless filling type structure, and selects a proper cavity structure and the compression sealing ring to form a seamless filling structure through accurate calculation, once thelocking thread 3c at the lower end of the shell is locked with theouter connector 6, thecompression sealing ring 2 is extruded to completely fill the cavity gap of theaccommodating cavity 4 of the compression sealing ring, and the gapped cavity is immediately converted into a seamless cavity, so that residual liquid medicine can not be left in the seamless cavity during dredging of the liquid medicine, and the transfusion of a patient can not be influenced.
In conclusion, the seamless filling needle-free dosing connector disclosed by the invention adopts a seamless filling type structure, the sealing ring is extruded and compressed, and the seamed cavity is immediately converted into a seamless cavity, so that residual liquid medicine cannot be left in the seamless cavity during dredging of the liquid medicine, the infusion of a patient cannot be influenced, the seamless filling needle-free dosing connector is simple in structure, smooth to use, simple and convenient to operate, high in safety, and capable of completely filling gaps in the cavity to achieve seamless and residue-free infusion.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above described embodiments are 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 (9)
1. The utility model provides a seamless filling exempts from needle and adds medicine and connects, its characterized in that includes locking connecting piece, compression sealing ring and the shell from interior to outer coaxial setting in proper order, 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, and the through holes of the luer connector, the through holes of the positioning groove and the conical pipe are sequentially communicated from top to bottom to form a straight-through infusion flow channel;
the compression sealing ring is sleeved on the conical tube and comprises a tail part, a tooth-shaped part and a head part which are sequentially connected from top to bottom, the tail part is inserted into the positioning groove, and the upper end surface of the tail part 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; locking threads are arranged on the outer circumferential surface of the lower part of the shell;
a compression sealing ring accommodating cavity is formed between the inner wall surface of the shell and the outer wall surface of the conical tube;
once the locking thread at the lower end of the shell is locked with the outer joint, the compression sealing ring is extruded to completely fill the cavity gap of the accommodating cavity of the compression sealing ring, and the slotted cavity is immediately converted into a seamless cavity, so that residual liquid medicine cannot be left in the seamless cavity during dredging of the liquid medicine;
after the outer joint upwards extrudes the compression sealing ring to a certain position, the straight-through transfusion flow channel of the locking connecting piece is exposed and communicated with the transfusion inner cavity of the outer joint.
2. The seamless fill needle-free medicated adaptor of claim 1, wherein the draft taper of the tapered tube of the locking connector is 3 ° ± 1 °, and the draft taper of the tapered structure of the inner cavity of the housing is 8 ° ± 1 °.
3. The seamless filling needle-free dosing joint according to claim 1, wherein the toothed portion of the compression sealing ring is composed of 6 outer teeth and 5 inner teeth, and the outer teeth and the inner teeth are sequentially arranged at intervals from top to bottom;
the maximum outer diameter of the outer teeth is 5.2 +/-0.1 mm, and the outer diameter sizes of the 6 outer teeth are sequentially decreased by 0.1mm from top to bottom;
the biggest external diameter of internal tooth is 2.1 +/-0.1 mm, 5 external diameter sizes of internal tooth from top to bottom progressively decrease 0.1mm in proper order.
4. The seamless filling needle-free dosing connector according to claim 1, wherein an annular protrusion is arranged on an outer groove wall of the positioning groove of the locking connecting piece, the annular protrusion and the positioning groove are coaxially arranged, an annular groove matched with the annular protrusion is arranged on an inner wall surface of the upper portion of the housing, and the annular protrusion is clamped in the annular groove.
5. The seamless filling needle-free dosing connector according to claim 1, wherein the luer connector of the locking connector is of a hollow internal thread structure, and a plurality of strength ribs are arranged on the outer circumferential surface of the luer connector.
6. The seamless filling needle-free dosing connector according to claim 1, wherein the outer circumferential surface of the upper part of the housing is a smooth surface, and the outer wall of the middle part of the housing is provided with a fluid direction mark.
7. The seamless filling needle-free dosing adaptor according to claim 1, wherein the head of the compression sealing ring is provided with a notch, and the inner circumferential surface of the housing radially presses the head of the compression sealing ring to seal the notch.
8. The seamless fill needle-free dosing adaptor of claim 7, wherein the tapered tube is tightly inserted into a notch in a head of the compression sealing ring when the compression sealing ring is in a fully compressed state.
9. The seamless fill needle-free dosing adaptor of claim 1, wherein the compression seal ring is made of a compressible soft material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911065849.6ACN110694137B (en) | 2019-11-04 | 2019-11-04 | Seamless filling needle-free dosing connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911065849.6ACN110694137B (en) | 2019-11-04 | 2019-11-04 | Seamless filling needle-free dosing connector |
Publications (2)
| Publication Number | Publication Date |
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| CN110694137A CN110694137A (en) | 2020-01-17 |
| CN110694137Btrue CN110694137B (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911065849.6AActiveCN110694137B (en) | 2019-11-04 | 2019-11-04 | Seamless filling needle-free dosing connector |
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| CN (1) | CN110694137B (en) |
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- 2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1077654A (en)* | 1991-12-18 | 1993-10-27 | Icu医学有限公司 | Medical valve and method of use thereof |
| CN1208355A (en)* | 1995-12-15 | 1999-02-17 | Icu医学有限公司 | Medical valve with fluid escape space |
| TW200414912A (en)* | 2002-12-19 | 2004-08-16 | Top Kk | Fitting device |
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| CN102448537A (en)* | 2009-03-25 | 2012-05-09 | Icu医学有限公司 | Medical connector and method of use thereof |
| WO2015044835A1 (en)* | 2013-09-25 | 2015-04-02 | Giuseppe Maffei | Needle-free connector |
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| Publication number | Publication date |
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| CN110694137A (en) | 2020-01-17 |
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