CN209595756U - A kind of sampling joint - Google Patents
A kind of sampling joint Download PDFInfo
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- CN209595756U CN209595756U CN201822198101.0U CN201822198101U CN209595756U CN 209595756 U CN209595756 U CN 209595756U CN 201822198101 U CN201822198101 U CN 201822198101U CN 209595756 U CN209595756 U CN 209595756U
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- liquid
- rubber plug
- base
- passing hole
- base portion
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Abstract
The utility model relates to a kind of sampling joint, shell and rubber plug including the inner sleeve with liquid-passing hole, with liquid pass hole, the liquid pass hole is connected to liquid-passing hole, and combination forms the sampling cavity rabbeted for rubber plug and rubber plug is prevented to escape between the inner sleeve and shell；The rubber plug is embedded in shell and inner sleeve, is provided with self-enclosed notch on the rubber plug, medical lubricating oil is coated in the notch, the notch is connected to liquid-passing hole；Have the advantages that puncture is smooth, highly-safe, uses for syringe needle or other nonmetallic needle construction multiple repairing welds.
Description
Technical field
The utility model relates to medical devices field more particularly to a kind of sampling joints.
Background technique
Tradition check or therapeutic process in, it usually needs to testing staff or patient take a certain amount of blood or
Person's body fluid is exactly that a certain amount of blood is directly extracted with sampling syringe as chemical examination detection sample, the most direct and most common mode
Liquid or body fluid are as detection sample.Such mode samples, and often brings some skin and flesh pain to the personnel of being detected.Especially
When some unconventional detections or treatment, there are many limitations for such mode, such as during hemodialysis treatment, then very
It is difficult to realize well.At this point, then often adding sampling joint in hemodialysis device, this is directly pierced through by sampling syringe and is adopted
Sample connector, to take sample.This mode, still be unable to do without metal needle, and its in puncture process due to sampling
There are preferable toughness and elasticity for connector, it is possible to can have the too quickly situation that exerts a force, there are certain being wounded by stabbing or puncture to connect
The security risk of head, perfusion tube.
Utility model content
The purpose of the utility model is to provide a kind of sampling joints, and which solve existing sampling joints to need using metal
Syringe needle punctures, and there are problems that security risk, and needle thorn can be reduced by, which having, hinders, or sampled using nonmetallic needle construction
Advantage.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of sampling joint, shell and rubber plug including the inner sleeve with liquid-passing hole, with liquid pass hole, the liquid pass hole
It is connected to liquid-passing hole, combination forms the sampling cavity rabbeted for rubber plug and rubber plug is prevented to escape between the inner sleeve and shell；Institute
It states and is provided with self-enclosed notch on rubber plug, medical lubricating oil is coated in the notch, the notch is connected to liquid-passing hole.
By using above-mentioned technical proposal, the self-enclosed notch on rubber plug is equivalent to remaining one for syringe needle or other are non-
Metal needle construction penetrates, and rubber plug typically is provided with stronger reset sealed elastic performance and viscid characteristic, can puncture knot more fortunately
Structure still protects closing after extracting, for repeatedly puncturing use；Medical lubricating oil therein, which can provide lubrication, reduces rubber plug
Viscous effect causes transition to puncture to avoid overexerting, and puncturing structure extraction after will be formed oil film prevent liquid from
Notch escape, or extraneous bacterium enter, and improve safety.
The utility model is further arranged to: the medical lubricating oil is silicone oil.
By using above-mentioned technical proposal, silicone oil has brilliant heat resistance, electrical insulating property, weatherability, hydrophobicity, physiology
Inertia and lesser surface tension additionally have low viscosity-temperature coefficient, higher resistance to compression；It can be reliably in narrow sky
Between form protective film.
The utility model is further arranged to: the rubber plug is vulcanization silica gel rubber plug, and the material of the inner sleeve is PVC.
By using above-mentioned technical proposal, the silica gel of vulcanization has extraordinary release property, suitable for manufacturing the close of precision
Sealing improves sealing effect, and PVC is used the adhesive effect between shell to can be improved, especially as inner sleeve structure
Using the molding shell of quadric injection mould form.
The utility model is further arranged to: being provided at least twice along liquid-passing hole away from sampling cavity protrusion on the shell
Axially extending support fin.
It, can be using support fin as stable back branch when being punctured by using above-mentioned technical proposal
Support also avoids medical staff from being stabbed in puncture process to reduce the offset of the position or angle that generate in puncture process.
The utility model is further arranged to: the rubber plug include base portion, opposed base wall towards liquid-passing hole protrude interior protuberance
With opposed base wall towards the male part in outside, the axial end face for rabbeting and being connected to base portion for base portion is provided on the inner sleeve
Inner pluging base, be provided through on the inner pluging base and be connected to liquid-passing hole and for the intrusion slot of interior protuberance interlocking, on the shell
It is provided with the outer obturating plug for rabbeting and being connected to another axial end face of base portion for base portion；Perforative confession is provided on the outer obturating plug
The outer caulking groove of male part interlocking.
By using above-mentioned technical proposal, interior protuberance is connected to embedded in intrusion slot and with liquid-passing hole, and male part is embedded in outer caulking groove
And be in communication with the outside, base portion is restricted in sampling cavity as section the best part to prevent rubber plug from escaping.
The utility model is further arranged to: the interior protuberance be cylinder, the cylindroid of the male part, the notch
Length direction and cylindroid long overlapping of axles.
By using above-mentioned technical proposal, columned outer wall construction can be easier to obtain higher concentric locating essence
Degree, thus guarantee the interlocking precision of rubber plug, and the male part of ellipse can cooperatively form spin-ended effect.
The utility model is further arranged to: end face of the male part far from base portion from the both ends of short axle to it is intermediate gradually
Intensification is recessed cambered surface, and the end face of the male part is smoothly connected with outer obturating plug far from the end face of liquid-passing hole.
By using above-mentioned technical proposal, in installation or injection molding process or later, shell can there are one to rubber plug
Fixed squeezing action, and this globoidal structure can effectively guide deformation to by Incision closure.
The utility model is further arranged to: the end face that the outer obturating plug is located at the separate notch except shell be provided with
The compensating tank of cuts parallel.
By using above-mentioned technical proposal, compensating tank can leave a blank in advance after shell and rubber plug are squeezed for deformation
Between, the deformation after notch, rubber plug, shell are punctured is limited in recoverable elastic deformation.
The utility model is further arranged to: being provided with limit on the end face where the bearing surface of the inner pluging base and base portion
Slot, protruding above for the outer obturating plug is provided with the inner wall for contradicting inner pluging base and the limiting section embedded in limiting slot, outside the base portion
Side wall is abutted with the inner wall of limiting section.
By using above-mentioned technical proposal, the connection of limiting section and inner pluging base be can be improved between inner pluging base and outer obturating plug
Connective stability；Between limiting section and rubber plug can by secondary injection molding, with the being completely embedded property between raising and rubber plug,
Improve sealing effect.
The utility model is further arranged to: being provided on the outer obturating plug of side of the limiting section far from base portion for internal plug
The mounting groove of the part interlocking of seat, the mounting groove is provided with gutter close to the slot bottom indent of limiting section, on the inner pluging base
Protrusion is provided with the protrusion of stablizing with gutter cooperation, and the stable protrusion is to be with inner pluging base along the axial section of liquid-passing hole
The right-angled trapezium at bottom, and trapezoidal direct face is abutted with limiting section.
By using above-mentioned technical proposal, stablizes protrusion and combined the cooperation of limiting section and limiting slot point with the cooperation of gutter
Limit is not formed in interior outside radially, effectively raises the connective stability between inner sleeve and shell；Furthermore, it is possible to
Certain compressional deformation space is provided for limiting section.
In conclusion the utility model has the following beneficial effects:
1, it can provide and used for syringe needle or other nonmetallic needle construction multiple repairing welds, avoiding overexerting causes transition to be worn
Thorn, and oil film will be formed after puncturing structure extraction, liquid is prevented to escape from notch, or extraneous bacterium enters, and improves safety
Property；
2, back-supported is provided, the offset of the position or angle that generate in puncture process is reduced, also avoids medical care people
Member is stabbed in puncture process；
3, stability and sealing effect after improving the precision installed, the connection of each component.
Detailed description of the invention
Fig. 1 is the internal structure chart of sampling joint；
Fig. 2 is sampling joint, the internal structure chart after rubber plug disassembly；
Fig. 3 is the structure chart of sampling joint；
Fig. 4 is enlarged drawing of the Fig. 2 at A.
In figure, 1, inner sleeve；2, rubber plug；3, shell；101, sampling cavity；11, liquid-passing hole；12, inner pluging base；13, intrusion slot；
14, limiting slot；15, stablize protrusion；21, base portion；22, interior protuberance；23, male part；24, notch；31, liquid pass hole；32, outer plug
Seat；33, outer caulking groove；34, limiting section；35, mounting groove；36, gutter；37, compensating tank；38, fin is supported.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
A kind of sampling joint, it is as depicted in figs. 1 and 2, outer including the inner sleeve 1 with liquid-passing hole 11, with liquid pass hole 31
Shell 3 and rubber plug 2, liquid pass hole 31 are connected to liquid-passing hole 11 and use as normal infusion.It is combined between inner sleeve 1 and shell 3
Form the sampling cavity 101 rabbeted for rubber plug 2 and rubber plug 2 is prevented to escape.
Rubber plug 2 is vulcanization silica gel as material, and rubber plug 2 protrudes including base portion 21, opposed base wall 21 towards liquid-passing hole 11 interior
Protrusion 22 and opposed base wall 21 are towards the male part 23 in outside, and interior protuberance 22 is cylinder, the cylindroid of male part 23 and base portion 21,
The perspective plane of male part 23 and interior protuberance 22 is fallen in the perspective plane of base portion 21, and end face of the male part 23 far from base portion 21 is from short
Gradually deepen to be recessed cambered surface to intermediate in the both ends of axis (referring to Fig. 3).Self-enclosed notch 24, notch are provided on rubber plug 2
24 run through male part 23, base portion 21 and interior protuberance 22, the length direction of notch 24 and cylindroid long overlapping of axles.It is applied in notch 24
It is furnished with silicone oil, notch 24 is connected to liquid-passing hole 11.
Referring to Figures 1 and 2, the material of inner sleeve 1 is PVC.It is provided on inner sleeve 1 and rabbets for base portion 21 and be connected to base
The inner pluging base 12 of the axial end face in portion 21 is provided through on inner pluging base 12 and is connected to liquid-passing hole and in the interlocking of interior protuberance 22
Caulking groove 13.Referring to Fig. 2 and Fig. 4, limiting slot 14 is provided on the end face where the bearing surface of inner pluging base 12 and base portion 21, but limit
Slot 14 is not covered by base portion 21.
Referring to Figures 1 and 2, the outer of another axial end face for rabbeting and being connected to base portion 21 for base portion 21 is provided on shell
Obturating plug 32；The perforative outer caulking groove 33 rabbeted for male part 23 is provided on outer obturating plug 32.Outer obturating plug 32 and inner pluging base 12 it is interior
Chamber combines to form sampling cavity 101.Referring to Fig. 2 and Fig. 4, the protruding above of outer obturating plug 32 is provided with the inner wall for contradicting inner pluging base 12 and embedding
It is abutted in the lateral wall of the limiting section 34 of limiting slot 14, base portion 21 with the inner wall of limiting section 34.Limiting section 34 is far from base portion 21
The mounting groove 35 of the part interlocking for inner pluging base 12, slot of the mounting groove 35 close to limiting section 34 are provided on the outer obturating plug 32 of side
Bottom indent is provided with gutter 36, and inner pluging base 12, which protrudes above to be provided with, stablizes protrusion 15 with what gutter 36 cooperated, stablizes protrusion
15 along to be with inner pluging base 12 be in the axial section of liquid-passing hole 11 bottom right-angled trapezium, and trapezoidal direct face is supported with limiting section 34
It connects.The end face of end face and male part 23 of the outer obturating plug 32 far from liquid-passing hole 11 is smoothly connected.Outer obturating plug 32 is located at except shell 3
End face far from notch 24 is provided with the compensating tank 37 parallel with notch 24.
The protrusion of sampling cavity 101 is provided with axially extending support fin 38 of the twice along liquid-passing hole 11 on shell 3.
Processing method includes the following steps:
Step S1, primary to be molded, injection molding forms the inner sleeve 1 for having liquid-passing hole 11, and is formed on the side wall of inner sleeve 1
Inner pluging base 12 with sampling cavity, wherein sampling cavity is connected to liquid-passing hole 11；
Prepared by step S2, rubber plug 2, molding rubber plug 2 is placed in tooling device notch 24 and is coated with silicone oil into notch 24；
Step S3, rubber plug 2 are installed, and rubber plug 2 are embedded in sampling cavity, and notch 24 is connected to liquid-passing hole 11；
Step S4, quadric injection mould, injection molding form shell 3, and the shell 3 wraps up inner sleeve 1 and formed to be connected with liquid-passing hole 11
Logical liquid pass hole 31, package rubber plug 2, which forms outer obturating plug 32 and is connected to inner pluging base 12, is closely limited to sampling cavity 101 for rubber plug 2；Outside
The sampling opening for being connected to sampling cavity 101 is provided through on obturating plug 32.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as within the protection scope of the present utility model all by the protection of Patent Law.
Claims (10)
1. a kind of sampling joint, it is characterized in that: including the inner sleeve (1) with liquid-passing hole (11), the shell for having liquid pass hole (31)
(3) and rubber plug (2), the liquid pass hole (31) are connected to liquid-passing hole (11), combine between the inner sleeve (1) and shell (3)
Form the sampling cavity (101) rabbeted for rubber plug (2) and rubber plug (2) is prevented to escape；Self-enclosed cut is provided on the rubber plug (2)
Mouth (24), the notch (24) is interior to be coated with medical lubricating oil, and the notch (24) is connected to liquid-passing hole (11).
2. a kind of sampling joint according to claim 1, it is characterized in that: the medical lubricating oil is silicone oil.
3. a kind of sampling joint according to claim 1, it is characterized in that: the rubber plug (2) is vulcanization silica gel rubber plug (2),
The material of the inner sleeve (1) is PVC.
4. a kind of sampling joint according to claim 1, it is characterized in that: convex away from sampling cavity (101) on the shell (3)
It is provided at least twice out along the axially extending support fin (38) of liquid-passing hole (11).
5. a kind of sampling joint according to claim 1, it is characterized in that: the rubber plug (2) includes base portion (21), opposite base
Male part (23) of the portion (21) towards liquid-passing hole (11) protrusion interior protuberance (22) and opposed base wall (21) towards outside, the inner sleeve
The inner pluging base (12) for rabbeting and being connected to the axial end face of base portion (21) for base portion (21), the inner pluging base are provided on pipe (1)
(12) it is provided through and is connected to liquid-passing hole (11) and for the intrusion slot (13) of interior protuberance (22) interlocking on, on the shell (3)
It is provided with the outer obturating plug (32) for rabbeting and being connected to another axial end face of base portion (21) for base portion (21)；The outer obturating plug (32)
On be provided with it is perforative for male part (23) interlocking outer caulking groove (33).
6. a kind of sampling joint according to claim 5, it is characterized in that: the interior protuberance (22) is cylinder, the evagination
The cylindroid in portion (23), the length direction of the notch (24) and cylindroid long overlapping of axles.
7. a kind of sampling joint according to claim 6, it is characterized in that: end of the male part (23) far from base portion (21)
Face gradually deepens to be recessed cambered surface from the both ends of short axle to intermediate, and the end face of the male part (23) and outer obturating plug (32) are separate
The end face of liquid-passing hole (11) is smoothly connected.
8. a kind of sampling joint according to claim 6, it is characterized in that: the outer obturating plug (32) is located at except shell (3)
The end face of separate notch (24) be provided with the compensating tank parallel with notch (24) (37).
9. a kind of sampling joint according to claim 5, it is characterized in that: the abutting of the inner pluging base (12) and base portion (21)
It is provided on end face where face limiting slot (14), protruding above for the outer obturating plug (32) is provided with the interior of conflict inner pluging base (12)
Wall and the limiting section (34) for being embedded in limiting slot (14), the lateral wall of the base portion (21) are abutted with the inner wall of limiting section (34).
10. a kind of sampling joint according to claim 9, it is characterized in that: the limiting section (34) is far from base portion (21)
The mounting groove (35) of the part interlocking for inner pluging base (12) is provided on the outer obturating plug (32) of side, the mounting groove (35) is close
The slot bottom indent of limiting section (34) is provided with gutter (36), and the inner pluging base (12) protrudes above to be provided with matches with gutter (36)
Conjunction is stablized raised (15), and it is bottom that stable raised (15), which are with inner pluging base (12) along the axial section of liquid-passing hole (11),
Right-angled trapezium, and trapezoidal direct face is abutted with limiting section (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822198101.0U CN209595756U (en) | 2018-12-26 | 2018-12-26 | A kind of sampling joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822198101.0U CN209595756U (en) | 2018-12-26 | 2018-12-26 | A kind of sampling joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209595756U true CN209595756U (en) | 2019-11-08 |
Family
ID=68397229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822198101.0U Active CN209595756U (en) | 2018-12-26 | 2018-12-26 | A kind of sampling joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209595756U (en) |
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2018
- 2018-12-26 CN CN201822198101.0U patent/CN209595756U/en active Active
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