CN218420586U - Pre-filling and sealing syringe protective cap with excellent sealing performance - Google Patents
Pre-filling and sealing syringe protective cap with excellent sealing performance Download PDFInfo
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- CN218420586U CN218420586U CN202221618850.4U CN202221618850U CN218420586U CN 218420586 U CN218420586 U CN 218420586U CN 202221618850 U CN202221618850 U CN 202221618850U CN 218420586 U CN218420586 U CN 218420586U
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Abstract
The utility model discloses a embedment syringe helmet in advance that leakproofness is good, one is including the helmet body, and the well upper portion of helmet body is equipped with ring groove, and helmet body lower part is equipped with and embedment syringe conical head complex cavity in advance, and the cavity bottom is equipped with cylindrical arch, cylindrical protruding lower part is equipped with cylindrical end cap. The utility model discloses to embedment syringe centrifugation experiment in advance to embedment syringe helmet institutional advancement and adjustment in advance, make it have better leakproofness. Through ring groove's thickness setting, toper cavity and lead angle radian setting, the setting of cylindrical protruding position and diameter, structural design and dimensional adjustment in the aspect of the cylindrical end cap radian ensure the leakproofness. And centrifuging for 5min at a rotating speed of 3000r/min of a horizontal rotor, and completely sealing the prefilled syringe without liquid leakage.
Description
Technical Field
The utility model belongs to the medicine packing field, concretely relates to embedment syringe helmet in advance that leakproofness is good.
Background
The pre-filled and sealed injector is widely applied to the packaging of high-end medicines such as vaccines, antithrombotic medicines, bioengineering medicines, cosmetic medicines and the like. In recent years, the global pandemic of new coronaviruses, the development of vaccines has indirectly increased the market size of pre-filled syringes. The pre-encapsulated syringes are divided into two types, namely syringes with injection needles and syringes without injection needles; the syringe without injection needle is divided into a cone type and a screw type.
Various liquid medicines need to be deaerated in liquid when in use. When the medicine rotates at high speed in the centrifugal machine, the air bubbles in the liquid are separated out under the action of centrifugal force. The common spiral-head pre-filled and sealed syringe protective cap can meet the sealing requirement under the common condition. However, in the case of a medicine requiring removal of bubbles during use, the cap moves due to centrifugal force in the process of removing bubbles by centrifugation, resulting in leakage. In order to solve the problem, the utility model discloses adjust the product structure.
SUMMERY OF THE UTILITY MODEL
To the not enough in the above-mentioned background art, the utility model provides a be applicable to the good embedment syringe helmet in advance of centrifugal leakproofness, make it have better leakproofness.
Realize the technical scheme of the utility model is that: the utility model provides a good embedment syringe helmet in advance of leakproofness, includes the helmet body, and the well upper portion of helmet body is equipped with ring groove, and helmet body lower part is equipped with and fills the cavity of embedment syringe awl head complex in advance, and the cavity bottom is equipped with cylindrical arch.
Furthermore, a cylindrical plug is arranged at the lower part of the cylindrical protrusion.
Further, the diameter d of the cylindrical protrusion is 1.35-1.42mm, and the more preferable diameter is 1.40mm, which is larger than the inner diameter of the conical head of the syringe (about 1.0 mm). Because the design of cylindrical structure, little end cap and rubber matter are soft and have better elasticity, make cylindrical protruding entering syringe conical head aperture inside, play main sealed effect. The height L2 of the cylindrical protrusion is 1.22mm, and the radian R1 is 0.41.
Furthermore, the total height L1 of the cylindrical protrusion and the cylindrical plug is 2.04mm, and the radian R2 of the cylindrical plug is 0.2mm. The special shape design makes the cylindrical bulge enter the inner hole of the conical head of the pre-filled syringe more easily.
Furthermore, the annular clamping groove is tightly matched with a protrusion on the spiral head type shell (4).
Furthermore, the position of the cylindrical protrusion can influence whether the cylindrical protrusion can smoothly enter the small hole of the conical head of the injector, and meanwhile, the phenomenon that the cylindrical protrusion rebounds in the too-low installation process is avoided. The vertical distance H between the arc tangents on the two sides of the cylindrical protrusion and the lower part of the annular clamping groove is 1.65mm-1.85mm.
Further, the total height of the pre-filled and sealed syringe protective cap body is 13.7mm-14.3mm.
Further, the width h of the ring-shaped clamping groove is 1.05mm-1.2mm, and the thickness l of the ring-shaped clamping groove is 0.85mm-1.00mm, and more preferably 0.90mm-1.00mm. The wall thickness is properly increased, the annular clamping groove and the spiral head can be assembled more firmly, and liquid leakage caused by movement of the protective cap under the action of centrifugal force can be avoided.
Further, the cavity is a tapered cavity with a narrow upper part and a wide lower part, a lead angle is arranged between the bottom of the cavity and the cylindrical protrusion and comprises an inner lead angle and an outer lead angle, the radian of the inner lead angle is R0.4mm, and the radian of the outer lead angle is R0.6mm. Through the adjustment of the lead angle radian, the cavity is better attached to the outer surface of the conical head of the prefilled syringe.
The utility model has the advantages that: the utility model discloses to embedment syringe centrifugation experiment in advance to embedment syringe helmet institutional advancement and adjustment in advance, make it have better leakproofness. Through ring groove's thickness setting, toper cavity and lead angle radian setting, the setting of cylindrical protruding position and diameter, structural design and dimensional adjustment in the aspect of the cylindrical end cap radian ensure the leakproofness. And centrifuging for 5min at a rotating speed of 3000r/min of a horizontal rotor, and completely sealing the prefilled syringe without liquid leakage.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an assembly view of the pre-filled syringe cap and syringe of the present invention.
Detailed Description
The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following embodiments.
As shown in fig. 1, the pre-filled and sealed syringe protective cap with excellent sealing performance comprises a protective cap body, wherein an annular clamping groove 1 is formed in the middle upper part of the protective cap body and is tightly matched with a protrusion on a spiral head type shell (4) (as shown in fig. 2), so that the protective cap is prevented from moving backwards in the centrifugal process to cause liquid leakage; the lower part of the protective cap body is provided with a cavity 2 (shown in figure 2) matched with a conical head of a pre-filled syringe 5, the bottom of the cavity is provided with a cylindrical protrusion 3, and the lower part of the cylindrical protrusion 3 is provided with a cylindrical plug 3-1. The cylindrical protrusion and the cylindrical plug enter the conical head of the injector to be contacted with the medicine, and liquid leakage is prevented by the sealing property of the rubber.
The cavity 2 is a tapered cavity with a narrow upper part and a wide lower part, a lead angle is arranged between the bottom of the cavity and the cylindrical protrusion 3 and comprises an inner lead angle 21 and an outer lead angle 22, the radian of the inner lead angle 21 is R0.4mm, and the radian of the outer lead angle 22 is R0.6mm. Through the adjustment of the lead angle radian, the cavity is better attached to the outer surface of the conical head of the prefilled syringe.
The diameter d of the cylindrical protrusion 3 is 1.35-1.42mm, and more preferably the diameter is 1.40mm, which is larger than the inner diameter of the syringe cone (about 1.0 mm). Because the design of cylindrical structure, little end cap and rubber matter are soft and have better elasticity, make cylindrical protruding entering syringe conical head aperture inside, play main sealed effect. The height L2 of the cylindrical protrusion is 1.22mm, and the radian R1 is 0.41.
The total height L1 of the cylindrical protrusion 3 and the cylindrical plug 3-1 is 2.04mm, and the radian R2 of the cylindrical plug is 0.2mm. The special shape design makes the cylindrical bulge enter the inner hole of the conical head of the prefilled syringe more easily.
The position of the cylindrical protrusion can influence whether the cylindrical protrusion can smoothly enter the small hole of the conical head of the injector, and meanwhile, the cylindrical protrusion is prevented from rebounding when the position is too low in the installation process. The vertical distance H between the arc tangents on the two sides of the cylindrical protrusion and the lower part of the annular clamping groove is 1.65mm-1.85mm. The total height of the pre-filled and sealed syringe protective cap body is 13.7mm-14.3mm.
The width of the ring-shaped clamping groove 2 is 10-20% larger than that of the inner ring of the screw head, the width h of the ring-shaped clamping groove is 1.05mm-1.2mm, and the thickness l of the ring-shaped clamping groove is 0.85mm-1.00mm, more preferably 0.90mm-1.00mm. The wall thickness is properly increased, the annular clamping groove and the spiral head can be assembled more firmly, and liquid leakage caused by movement of the protective cap under the action of centrifugal force can be avoided.
Producing 100 pre-filled and sealed syringe protective caps according to the size structure, and carrying out a centrifugal bubble removal experiment: (1) The plunger was loaded into the pre-filled syringe using the push rod and the push rod was removed. (2) And (3) taking the syringe with the needle head to inject the pure water into the pre-filled syringe from the conical head opening part of the pre-filled syringe, so as to ensure that no pure water overflows. (3) The protective cap and the plastic screw head are assembled by using an assembling tool, and then the screw head is used for sealing the pre-filled and sealed injector. (4) And (4) putting the sealed pre-filled and sealed syringe into a centrifuge for experiment. The purpose of centrifugation is to remove air bubbles from the liquid drug.
The method comprises the following specific steps:
1. taking 1ml of a pre-filled and sealed syringe, and filling 1ml of pure water;
2. assembling a protective cap and a pre-filling and sealing injector;
3. placing into a TD4 type centrifuge, and setting rotation speed of 3000r/min for 5min.
The experimental results are as follows:
| grouping | Quantity (only) | Leakage (only) | No leakage (only) |
| 1 | 8 | 0 | 8 |
| 2 | 8 | 0 | 8 |
| 3 | 8 | 0 | 8 |
| 4 | 8 | 0 | 8 |
| 5 | 8 | 0 | 8 |
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a good embedment syringe helmet in advance of leakproofness, includes the helmet body, its characterized in that: the middle upper part of the protective cap body is provided with an annular clamping groove (1), the lower part of the protective cap is provided with a cavity (2) matched with the conical head of the prefilled syringe, and the bottom of the cavity is provided with a cylindrical bulge (3);
the lower part of the cylindrical bulge (3) is provided with a cylindrical plug (3-1);
the diameter d of the cylindrical protrusion (3) is 1.35-1.42mm, the height L2 is 1.22mm, and the radian R1 is 0.41;
the total height L1 of the cylindrical protrusion (3) and the cylindrical plug (3-1) is 2.04mm, and the radian R2 of the cylindrical plug (3-1) is 0.2mm;
the width h of the annular clamping groove (1) is 1.05mm-1.2mm, and the thickness l of the annular clamping groove (1) is 0.85mm-1.00mm;
a lead angle is arranged between the bottom of the cavity (2) and the cylindrical protrusion (3), the lead angle comprises an inner lead angle (21) and an outer lead angle (22), the radian of the inner lead angle (21) is R0.4mm, and the radian of the outer lead angle (22) is R0.6mm;
the vertical distance H between the arc tangents on the two sides of the cylindrical protrusion and the lower portion of the annular clamping groove is 1.65mm-1.85mm.
2. The pre-potted syringe cap of claim 1, wherein: the annular clamping groove (1) is tightly matched with a protrusion on the spiral head type shell (4).
3. The pre-potted syringe cap of claim 1, wherein: the total height of the pre-filled and sealed syringe protective cap body is 13.7mm-14.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221618850.4U CN218420586U (en) | 2022-06-27 | 2022-06-27 | Pre-filling and sealing syringe protective cap with excellent sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221618850.4U CN218420586U (en) | 2022-06-27 | 2022-06-27 | Pre-filling and sealing syringe protective cap with excellent sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218420586U true CN218420586U (en) | 2023-02-03 |
Family
ID=85076537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221618850.4U Active CN218420586U (en) | 2022-06-27 | 2022-06-27 | Pre-filling and sealing syringe protective cap with excellent sealing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218420586U (en) |
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2022
- 2022-06-27 CN CN202221618850.4U patent/CN218420586U/en active Active
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