CN217697505U - Positive pressure needle-free connector valve core - Google Patents
Positive pressure needle-free connector valve core Download PDFInfo
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- CN217697505U CN217697505U CN202220225571.5U CN202220225571U CN217697505U CN 217697505 U CN217697505 U CN 217697505U CN 202220225571 U CN202220225571 U CN 202220225571U CN 217697505 U CN217697505 U CN 217697505U
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- shoulder
- columnar part
- truncated cone
- circular truncated
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Abstract
The utility model discloses a positive pressure needleless connector valve core, which comprises an upper part, a first shoulder part, a first columnar part, a second shoulder part and a second columnar part in sequence, wherein the upper part is of a round platform structure, and the diameter of the upper bottom is larger than that of the lower bottom; the lower bottom surface of the upper circular truncated cone is in smooth transition connection with the first columnar part, the diameter of the lower bottom surface of the upper circular truncated cone is gradually increased, and a first shoulder part is formed at the connection part of the lower bottom surface of the upper circular truncated cone; the first columnar part is in smooth transition connection with the second columnar part, the diameter of the second columnar part is larger than that of the first columnar part, and the connection part of the first columnar part and the second columnar part forms a second shoulder; upper portion, first shoulder, first column portion, second shoulder, second column portion integrated into one piece connect, upper portion, first shoulder, first column portion, second shoulder are solid construction, and second column portion lower extreme opening is inside to be the cavity structure. The utility model discloses, peg graft reliably, closed accurate, hinder fungus effectual, solve resilience card shell slope phenomenon, save material, convenient processing, the cost advantage is obvious.
Description
Technical Field
The utility model relates to a malleation connecting piece, concretely relates to malleation needleless connector case.
Background
In the process of intravenous infusion therapy, repeated infusion is required for many times, so that a venous indwelling needle or an indwelling catheter entering a vein of a human body is generally connected with a medicine injection device through a connector, and thus medicine adding and other operations are realized.
A traditional venous indwelling needle is generally externally provided with a rubber gasket and needs to be added with medicine through acupuncture. The method has certain risk, the gasket has the risk of falling scraps during acupuncture, and the generated falling scraps can enter the human body along with the medicine, so that great potential safety hazard is caused to patients.
The prior art is mostly the malleation connecting piece that adopts silica gel as the case. Its case mainly is solid portion and hollow portion, and solid portion is mostly the structure of adopting at the lateral wall setting a recess, and this structure can strengthen the resilience performance of case, thereby prevents to kick-back slowly and the weeping phenomenon appears. Also connect the case that adopts the wave type structure a bit, resilience performance is stable, has fixed resilience orbit, can accomplish fine sealing liquid and hinder the fungus effect. The prior art is because head structure problem has solved although kick-backed slowly but because the orbit of kick-backing can't be fixed, can lead to appearing the card shell when kick-backing, leads to this malleation connecting piece can't use. The end face of the head part cannot be completely rebounded to be in place after rebounding due to the material performance, so that the end face of the head part is inclined, and a gap is formed between the end face of the head part and the shell, so that the liquid sealing and bacterium blocking effects are unstable. The wave-shaped structure has excellent performance, but has extremely high requirements on material performance and expensive raw material cost. The requirements on the size and the flash are extremely high, the die is complex to manufacture, the process requirement is extremely high, and the large-scale production is inconvenient.
Therefore, the design of a positive pressure needleless connector valve core with reliable insertion, precise closing, rapid deformation recovery, smooth trajectory and stable trajectory is a technical problem that needs to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provide a malleation does not have connector case, peg graft reliably, closed accurate, hinder fungus effectual, solve the card shell slope phenomenon of resilience, save material, convenient processing, the cost advantage is obvious.
In order to achieve the purpose, the technical scheme of the utility model is to design a positive pressure needleless connector valve core, which comprises an upper part, a first shoulder part, a first column part, a second shoulder part and a second column part in sequence, and is characterized in that the upper part is of a round platform structure, and the diameter of the upper bottom is larger than that of the lower bottom; the lower bottom surface of the upper circular truncated cone is in smooth transition connection with the first columnar part, the diameter of the lower bottom surface of the upper circular truncated cone is gradually increased, and the connection part of the lower bottom surface of the upper circular truncated cone forms a first shoulder; the first columnar part is in smooth transition connection with the second columnar part, the diameter of the second columnar part is larger than that of the first columnar part, and the connection part of the first columnar part and the second columnar part forms a second shoulder; upper portion, first shoulder, first column portion, second shoulder, second column portion integrated into one piece connect, upper portion, first shoulder, first column portion, second shoulder are solid construction, and second column portion lower extreme opening, inside are cavity structure. The valve core of the positive-pressure needleless connector is made of silica gel, and the solid part is different from the traditional method that a groove is arranged on the side wall, but is arranged in a clearance state around.
The technical scheme is that a groove portion in the circumferential direction is formed in the inner side wall of the lower portion of the second cylindrical portion. The design of concave part can strengthen the connection fastness and the sealed effect of case, has increased the suitability of case simultaneously.
The technical scheme is that a longitudinal protruding rib is arranged on the inner side wall of the middle part of the second cylindrical part and above the groove part. The arrangement of the longitudinal protruding ribs can increase the strength of the positive-pressure needle-free connector valve core, promote the rebound of the valve core and prevent the phenomena of end face inclination and shell clamping.
The further technical scheme is that a circumferential convex waist line is arranged on the upper portion of the outer side wall of the second cylindrical portion. The setting of stringcourse is convenient for produce and take, easily observes the installation location of the case of being convenient for simultaneously.
The further technical scheme is that an included angle between the upper bottom surface of the circular truncated cone at the upper part and a bus is 15-75 degrees. According to the production cost and the actual use effects of the valve core needle moving resistance, resilience performance and the like, the included angle can be adjusted through comprehensive investigation.
The utility model has the advantages and the beneficial effects that: this structure can prevent that the product from taking place the phenomenon of terminal surface slope after kick-backing, and the orbit of kick-backing is fixed, the condition of the card shell of can not appearing kick-backing. The liquid leakage caused by liquid medicine flowing out from the non-clearance or clearance surface due to the stress problem generated by high pressure can be prevented, and the structure can effectively prevent the liquid medicine from flowing out under the high-pressure condition. The end face of the valve core product is tightly matched with the shell, so that a good bacterium blocking effect can be achieved, and other pollutants such as bacteria and the like are prevented from permeating into the connecting piece. The requirements on material performance are low, the material cost is low, the die is relatively simple, the requirements on the process are relatively low, the number of control points is small, and the large-batch production is facilitated. The design of concave part can strengthen the connection fastness and the sealed effect of case, has increased the suitability of case simultaneously. The arrangement of the longitudinal protruding ribs can increase the strength of the positive-pressure needle-free connector valve core, promote the rebound of the valve core and prevent the phenomena of end face inclination and shell clamping. The waist line is convenient to produce and take, and the installation and the positioning of the valve core are convenient to observe.
Drawings
Fig. 1 is a schematic view of the positive-pressure needleless connector valve core of the present invention;
in the figure: 1. an upper portion; 2. a first shoulder; 3. a first columnar portion; 4. a second shoulder; 5. a second cylindrical portion; 6. a groove part; 7. a rib protrudes longitudinally.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, the positive pressure needleless connector valve core of the present invention comprises an upper portion 1, a first shoulder 2, a first column portion 3, a second shoulder 4, and a second column portion 5, wherein the upper portion 1 has a circular truncated cone structure, and the diameter of the upper bottom is larger than that of the lower bottom; the lower bottom surface of the upper circular truncated cone is in smooth transition connection with the first columnar part 3, the diameter of the lower bottom surface of the upper circular truncated cone is gradually increased, and the connection part of the lower bottom surface of the upper circular truncated cone forms a first shoulder part 2; the first cylindrical part 3 is connected with the second cylindrical part 5 in a smooth transition way, the diameter of the second cylindrical part 5 is larger than that of the first cylindrical part 3, and the connecting part of the first cylindrical part and the second cylindrical part forms a second shoulder 4; upper portion 1, first shoulder 2, first column portion 3, second shoulder 4, second column portion 5 integrated into one piece connect, upper portion 1, first shoulder 2, first column portion 3, second shoulder 4 are solid construction, and 5 lower extreme openings of second column portion, inside are the cavity structure. The inner side wall of the lower part of the second cylindrical part 5 is provided with a circumferential groove part 6. And a longitudinal protruding rib 7 is arranged on the inner side wall of the middle part of the second cylindrical part 5 and above the groove part 6. The upper part of the outer side wall of the second cylindrical part 5 is provided with a waist line protruding in the circumferential direction, which is not shown in the figure. The included angle between the upper bottom surface of the circular truncated cone of the upper part 1 and the bus is 15-75 degrees.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The positive-pressure needleless connector valve core sequentially comprises an upper part, a first shoulder part, a first columnar part, a second shoulder part and a second columnar part, and is characterized in that the upper part is of a circular truncated cone structure, and the diameter of the upper bottom is larger than that of the lower bottom; the lower bottom surface of the upper circular truncated cone is in smooth transition connection with the first columnar part, the diameter of the lower bottom surface of the upper circular truncated cone is gradually increased, and the connection part of the lower bottom surface of the upper circular truncated cone forms a first shoulder; the first columnar part is in smooth transition connection with the second columnar part, the diameter of the second columnar part is larger than that of the first columnar part, and the connection part of the first columnar part and the second columnar part forms a second shoulder; upper portion, first shoulder, first column portion, second shoulder, second column portion integrated into one piece connect, upper portion, first shoulder, first column portion, second shoulder are solid construction, and second column portion lower extreme opening is inside to be the cavity structure.
2. The positive pressure, needleless connector cartridge of claim 1, wherein said second cylindrical portion has a circumferential recessed portion formed in a lower interior sidewall thereof.
3. The positive pressure needleless connector valve cartridge of claim 2 wherein the second cylindrical portion has a longitudinally protruding rib disposed on an inner side wall of a central portion thereof above the recessed portion.
4. The positive pressure needleless connector valve cartridge of claim 3 wherein the upper portion of the outer sidewall of the second cylindrical portion is provided with a circumferentially protruding waistline.
5. The positive pressure needleless connector valve core of claim 4, wherein the included angle between the upper bottom surface of the circular truncated cone of the upper portion and the generatrix is 15-75 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220225571.5U CN217697505U (en) | 2022-01-27 | 2022-01-27 | Positive pressure needle-free connector valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220225571.5U CN217697505U (en) | 2022-01-27 | 2022-01-27 | Positive pressure needle-free connector valve core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217697505U true CN217697505U (en) | 2022-11-01 |
Family
ID=83786318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220225571.5U Active CN217697505U (en) | 2022-01-27 | 2022-01-27 | Positive pressure needle-free connector valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217697505U (en) |
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2022
- 2022-01-27 CN CN202220225571.5U patent/CN217697505U/en active Active
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