CN201847980U - Transfusion bottle-inserting needle with built-in air intake and mixing prevention baffle - Google Patents
Transfusion bottle-inserting needle with built-in air intake and mixing prevention baffle Download PDFInfo
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- CN201847980U CN201847980U CN2010205922347U CN201020592234U CN201847980U CN 201847980 U CN201847980 U CN 201847980U CN 2010205922347 U CN2010205922347 U CN 2010205922347U CN 201020592234 U CN201020592234 U CN 201020592234U CN 201847980 U CN201847980 U CN 201847980U
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- inlet
- inserting needle
- venthole
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Abstract
The utility model discloses a transfusion bottle-inserting needle with a built-in air intake and mixing prevention baffle, which comprises a bottle-inserting needle body, an air intake plug and a filtering membrane. A liquid inlet channel and an L-shaped airflow channel are formed in the bottle-inserting needle body. The transfusion bottle-inserting needle is characterized in that an inclined bottom surface is arranged between a vertical wall and a bottom plate at the bottom end of an air intake channel and just opposite to the air intake port of the airflow channel, the inclined bottom surface and the horizontal plane of the airflow channel form an included angle alpha, the diameter of the air intake port at an inlet in the air outlet hole of the airflow channel is smaller than the diameter of the channel body of the air outlet hole of the airflow channel, and the air outlet hole adopts a channel with a small inlet and a large outlet. The two opposite sidewalls of the inclined bottom surface are respectively provided with an inclined side face forming an included angle beta with the horizontal plane of the air outlet hole. The transfusion bottle-inserting needle can prevent air in the airflow channel from being mixed with liquid, achieve high airflow smoothness and constancy, ensure the quality of normal transfusion and dosage, reach good transfusion effect, and avoid the transfusion interruption or blood emergence. Moreover, the transfusion bottle-inserting needle has a simple structure and is easy to process.
Description
Technical field
This utility model relates to medical apparatus, especially relates to the anti-air cellular-type infusion needle of a kind of built-in air inlet.
Background technology
Infusion needle is a kind of medical apparatus commonly used, and it is the air inlet feed liquor parts in the transfusion device.Traditional built-in air admission type infusion needle is to be processed with feed pathway and " L " shape gas channel in the needle for inserting bottle body, gas channel is made up of orthogonal inlet channel and venthole, inlet channel is located at the sidewall of needle for inserting bottle body, outer wall at inlet channel is provided with the inlet valve that can overturn and can cover inlet channel, has been placed with the filter membrane of filtered air effect in the inlet channel of step.There is following shortcoming in this built-in air admission type infusion needle: under the influence of gravity and external environment (atmospheric pressure), gas channel often has liquid to enter and produce eddy current, cause air and liquid phase in the gas channel to mix, cause gas channel to be separated by liquid, the not smooth phenomenon of air-flow appears, thereby influence infusion flow rate, cause for the medicine inequality.Through a large amount of experiment and clinical investigation, the infusion needle of unmodified, the transfusion weak effect, and existence can stop to infuse and produce the phenomenon of blood back, thus influence the quality of administration.
Summary of the invention
The purpose of this utility model is to provide a kind of and can avoids air and liquid phase in the gas channel to mix, have the effective built-in air inlet of quality, transfusion of the unobstructed property of air-flow and homeostasis, assurance normal infusion and administration efficiently preventing air cellular-type infusion needle.
The purpose of this utility model is achieved in that
Air cellular-type infusion needle is prevented in a kind of built-in air inlet, comprise the needle for inserting bottle body, in the needle for inserting bottle body, be processed with feed pathway and " L " shape gas channel, gas channel is made up of inlet channel and venthole, inlet channel is located at the sidewall of needle for inserting bottle body, outer wall at inlet channel is provided with the inlet valve that can overturn and can cover inlet channel, be placed with the filter membrane of filtered air effect in the inlet channel of step, feature is: between the perpendicular wall of inlet channel bottom and base plate, be processed with over against the venthole of gas channel and with the have angle slanted floor face of α of the horizontal plane of gas channel; Import department is processed with air inlet in the venthole of gas channel, makes the passage that the venthole import is little, outlet is big.
The sidewall of two opposition of slanted floor face all is processed into the have angle lateral incline of β of horizontal plane with inlet channel.
Described slanted floor face, lateral incline are inclined-plane or cambered surface, and angle α is 10～80 °, and angle β is 60 °～90 °.
The diameter of air inlet is 0.55～1.2mm, and the diameter of air inlet is 1.3mm.
This utility model is owing to improve the have angle slanted floor face of α of horizontal plane with inlet channel with the perpendicular wall of inlet channel bottom and the right angle between the base plate, two sidewalls of slanted floor face all are processed into the have angle lateral incline of β of horizontal plane with inlet channel, principle according to liquid flow, the slanted floor face can prevent from the gas channel can all to turn back to fully effectively in the infusion bottle because of the liquid that initial period is influenced by atmospheric pressure to enter in the gas channel, and two symmetric lateral incline can be destroyed the surface tension that liquid forms in inlet channel.And the venthole of gas channel narrows earlier and amplifies, and helps air-flow like this and continues to rise, and prevents that liquid from pouring in down a chimney.Slanted floor face and two lateral incline are closed up, and form a polyhedron or bowl-type.Therefore, the utlity model has air and the liquid phase that can avoid in the gas channel mix, have the unobstructed property of air-flow and homeostasis, assurance normal infusion and administration efficiently quality, infuse effective, can not stop to infuse and produce the phenomenon of blood back, the advantage of simple in structure, handling ease.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 be among Fig. 1 A--A to cutaway view;
Fig. 3 is the vertical view (not drawing inlet valve and filter membrane among the figure) among Fig. 1.
The specific embodiment
Below in conjunction with embodiment and contrast accompanying drawing this utility model is described in further detail.
Air cellular-type infusion needle is prevented in a kind of built-in air inlet, comprise needle for inserting bottle body 1, in needle for inserting bottle body 1, be processed with feed pathway 7 and " L " shape gas channel 2, gas channel 2 is made up of inlet channel 5 and venthole 11, inlet channel 5 is located at the sidewall of needle for inserting bottle body 1, outer wall at inlet channel 5 is provided with the inlet valve 6 that can overturn and can cover inlet channel 5, in the inlet channel 5 of step, be placed with the filter membrane 3 of filtered air effect, between the perpendicular wall 4 of inlet channel 5 bottoms and base plate 9, be processed with over against the air inlet 10 of venthole 11 and with the have angle slanted floor face 8 of α of the horizontal plane of venthole 11, the diameter of the air inlet 10 of venthole 11 is less than the diameter of the passage body 12 of venthole 11, and venthole 11 is little for import, export big passage.
The sidewall of two opposition of slanted floor face 8 all is processed into the have angle lateral incline 13,14 of β of horizontal plane with venthole 11.
Described slanted floor face 8, lateral incline 13,14 are inclined-plane or cambered surface, and angle α is 10～80 °, and angle β is 60 °～90 °.
The diameter of the air inlet 10 of venthole 11 is 0.55～1.2mm, and the diameter of the passage body 12 of venthole 11 is 1.3mm.
Claims (4)
1. air cellular-type infusion needle is prevented in a built-in air inlet, comprise needle for inserting bottle body (1), in needle for inserting bottle body (1), be processed with feed pathway (7) and " L " shape gas channel (2), gas channel (2) is made up of inlet channel (5) and venthole (11), inlet channel (5) is located at the sidewall of needle for inserting bottle body (1), outer wall at inlet channel (5) is provided with the inlet valve (6) that can overturn and can cover inlet channel (5), in the inlet channel (5) of step, be placed with the filter membrane (3) of filtered air effect, it is characterized in that: between the perpendicular wall (4) of inlet channel (5) bottom and base plate (9), be processed with over against the air inlet (10) of venthole (11) and with the have angle slanted floor face (8) of α of the horizontal plane of venthole (11), the diameter of the air inlet (10) of venthole (11) is less than the diameter of the passage body (12) of venthole (11), and venthole (11) is little for import, export big passage.
2. air cellular-type infusion needle is prevented in built-in air inlet according to claim 1, it is characterized in that: the sidewall of two opposition of slanted floor face (8) all is processed into the have angle lateral incline (13,14) of β of horizontal plane with venthole (11).
3. air cellular-type infusion needle is prevented in built-in air inlet according to claim 2, it is characterized in that: described slanted floor face (8), lateral incline (13,14) are inclined-plane or cambered surface, and angle α is 10～80 °, and angle β is 60 °～90 °.
4. air cellular-type infusion needle is prevented in built-in air inlet according to claim 1, and it is characterized in that: the diameter of air inlet (10) is 0.55～1.2mm, and the diameter of the passage body (12) of gas channel (11) is 1.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205922347U CN201847980U (en) | 2010-11-04 | 2010-11-04 | Transfusion bottle-inserting needle with built-in air intake and mixing prevention baffle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205922347U CN201847980U (en) | 2010-11-04 | 2010-11-04 | Transfusion bottle-inserting needle with built-in air intake and mixing prevention baffle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201847980U true CN201847980U (en) | 2011-06-01 |
Family
ID=44090399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205922347U Expired - Lifetime CN201847980U (en) | 2010-11-04 | 2010-11-04 | Transfusion bottle-inserting needle with built-in air intake and mixing prevention baffle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201847980U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103550839A (en) * | 2013-11-14 | 2014-02-05 | 刘燕 | Universal type disposable infusion apparatus |
| CN103611202A (en) * | 2013-11-27 | 2014-03-05 | 陈玲 | Universal type disposable infusion device with liquid stop function |
| CN108379687A (en) * | 2017-02-03 | 2018-08-10 | B.布劳恩梅尔松根股份公司 | Puncture part, drip chamber and infusion system for medical infusion system |
-
2010
- 2010-11-04 CN CN2010205922347U patent/CN201847980U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103550839A (en) * | 2013-11-14 | 2014-02-05 | 刘燕 | Universal type disposable infusion apparatus |
| CN103611202A (en) * | 2013-11-27 | 2014-03-05 | 陈玲 | Universal type disposable infusion device with liquid stop function |
| CN108379687A (en) * | 2017-02-03 | 2018-08-10 | B.布劳恩梅尔松根股份公司 | Puncture part, drip chamber and infusion system for medical infusion system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110601 |