CN204724032U - A kind of syringe with filter - Google Patents
A kind of syringe with filter Download PDFInfo
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- CN204724032U CN204724032U CN201520465083.1U CN201520465083U CN204724032U CN 204724032 U CN204724032 U CN 204724032U CN 201520465083 U CN201520465083 U CN 201520465083U CN 204724032 U CN204724032 U CN 204724032U
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- filter
- syringe
- cylindrical shell
- liquid flowing
- flowing tube
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Abstract
The utility model provides a kind of syringe with filter, belongs to medical art.It solve the technical problems such as existing syringe filter effect is not obvious.This syringe comprises plunger and cylindrical shell, the lateral surface of plunger and the inwall of cylindrical shell are fitted and plunger can move forward and backward along the length direction of cylindrical shell, the front end of cylindrical shell is provided with drain pipe, the sidewall of the front end of cylindrical shell is provided with liquid flowing tube, be provided with filter assemblies in cylindrical shell and filter assemblies between drain pipe and liquid flowing tube.Liquid flowing tube of the present utility model and drain pipe are provided separately, and make to get liquid and discharge opeing separately, easy to operate and filter effect better, it also avoid simultaneously do not filter liquid taking port place liquor residue on the impact of filter effect, improve the filter effect of syringe.
Description
Technical field
The utility model belongs to medical art, relates to a kind of syringe with filter.
Background technology
Syringe is the instrument that field of medicaments is conventional, for injection, extraction, splendid attire solution etc.In the dissolution rate of pharmaceutical preparation detects, syringe is also usually used in extracting the drug solution in stripping rotor, then carries out filtering and detecting filtrate drug content.Current method of operating uses syringe and sampling probe to draw volumetric soiutions from stripping rotor, and then on syringe, assemble syringe filters, filter, the filtrate after filtration is detected again.
There is following drawback in said method:
1. for avoiding medicine to separate out, to getting liquid, filtration and detecting free restriction, the exchange of multiple parts, assembling and make troubles to operation, also delayed the time.
2., in actual mechanical process, because syringe needle and filter are not one, its connecting portion is easy to the leakage causing solution, makes troubles to subsequent detection.
Summary of the invention
The problems referred to above that the utility model exists for existing technology, provide a kind of syringe with filter, technical problem to be solved in the utility model is: how to improve the filter effect of syringe to liquid.
The purpose of this utility model realizes by following technical proposal:
A kind of syringe with filter, described syringe comprises plunger and cylindrical shell, it is characterized in that, the lateral surface of described plunger and the inwall of described cylindrical shell are fitted and described plunger can move forward and backward along the length direction of described cylindrical shell, the front end of described cylindrical shell is provided with drain pipe, the sidewall of the front end of described cylindrical shell is provided with liquid flowing tube, be provided with filter assemblies in described cylindrical shell and described filter assemblies between described drain pipe and described liquid flowing tube.
Its operation principle is as follows: in the utility model, cylindrical shell is arranged one end of drain pipe as front end, this syringe also comprises push rod, one end and the plunger of push rod are fixed, and the other end stretches out, during work from the rear end of cylindrical shell, first drain pipe sealed and liquid flowing tube stretched into (or being stretched in liquid by syringe needle after assembling sampling probe) in liquid, then pull back push rod, plunger is moved backward, make liquid enter in cylindrical shell from liquid flowing tube; Then sealed by liquid flowing tube and remove the sealing of drain pipe, driven forward push rod, makes forward plunger motion, makes liquid through filter assemblies, then discharges from cylindrical shell, reaches the effect of filtration; Because the liquid flowing tube of this syringe and drain pipe are provided separately, make to get liquid and discharge opeing separately, easy to operate and filter effect better, it also avoid simultaneously do not filter liquid taking port place liquor residue on the impact of filter effect, improve the filter effect of syringe.
Above-mentioned a kind of with in the syringe of filter, described liquid flowing tube is provided with the first sealing shroud, described drain pipe is provided with the second sealing shroud, and described first sealing shroud to be set on described liquid flowing tube and to form sealing, and described second sealing shroud to be set on described drain pipe and to form sealing.The design of the first sealing shroud and the second sealing shroud is in order to avoid when getting liquid, air enters from liquid outlet, liquid is caused to be drawn, or liquid taking port does not seal during fluid, liquid directly flows out without liquid outlet from liquid taking port, when liquid flowing tube and drain pipe measure-alike, first sealing shroud is also identical with the size of the second sealing shroud, now this syringe can only have a sealing shroud, with sealing cover, drain pipe is sealed when getting liquid, during fluid, sealing shroud is taken off from drain pipe, and be set on liquid flowing tube liquid flowing tube is sealed, the design of the first sealing shroud and the second sealing shroud makes to get liquid and discharge opeing can both be carried out smoothly in the pipeline of correspondence, be conducive to the filter effect improving syringe.
Above-mentioned a kind of with in the syringe of filter, described cylindrical shell comprises end cap and main body and described end cap and main body removably connect, be provided with the dividing plate for fixing filter assemblies in described main body, described filter assemblies is located between the rear end of described end cap and described dividing plate.Above-mentioned end cap and main body can be threaded, and also can be connect and fix, and end cap and main body removably connect and conveniently change filter assemblies, improve the filter effect of syringe.
Above-mentioned a kind of with in the syringe of filter, on the sidewall that described liquid flowing tube is located at described main body and described liquid flowing tube and described main body one-body molded, described liquid flowing tube is positioned at the rear end of described dividing plate.Above-mentioned liquid flowing tube is positioned at the rear end of dividing plate, and when therefore getting liquid, liquid through filter assemblies, thus can not avoid unfiltered liquid medicine contamination filter membrane, thus improves the filter effect of liquid.
Above-mentioned a kind of with in the syringe of filter, described filter assemblies comprises sealing ring, filter membrane and gripper shoe, described sealing ring is fixed on the front end face of described dividing plate, the side of described filter membrane is close on described sealing ring, the opposite side of described filter membrane is close in described gripper shoe, and the rear end of described gripper shoe and described end cap is connected.
Above-mentioned a kind of with in the syringe of filter, described sealing ring is annular, and the front end face of described dividing plate is provided with the groove for fixed seal ring, and the center of described dividing plate is provided with the through hole passed through for liquid.The design of sealing ring can avoid liquid just to flow out from the connection space between filter membrane and cylindrical shell without membrane filtration, improves the filter effect of syringe.
Above-mentioned a kind of with in the syringe of filter, described gripper shoe is the sieve plate with larger aperture, ensure that liquid is smooth and easy on the one hand to pass through, on the other hand because filter membrane is thinner, the design of gripper shoe can play good supporting role to filter membrane, avoid filter membrane be out of shape in filter process or break, affect filter effect.
Compared with prior art, advantage of the present utility model is as follows:
1, the liquid flowing tube of this syringe and drain pipe are provided separately, and make to get liquid and discharge opeing separately, easy to operate and filter effect better, it also avoid simultaneously do not filter liquid taking port place liquor residue on the impact of filter effect, improve the filter effect of syringe.
2, first sealing shroud of this syringe and the design of the second sealing shroud make to get liquid and discharge opeing can both be carried out smoothly in the pipeline of correspondence, are conducive to the filter effect improving syringe.
3, in this syringe, the design of gripper shoe can play good supporting role to filter membrane, avoids filter membrane be out of shape in filter process or break, affects filter effect.
Accompanying drawing explanation
Fig. 1 is the overall schematic of this syringe.
Fig. 2 is the partial enlarged drawing at this syringe A place.
In figure, 1 plunger; 2 cylindrical shells; 21 end caps; 22 main bodys; 3 filter assemblies; 31 sealing rings; 32 filter membranes; 33 gripper shoes; 4 liquid flowing tubes; 5 drain pipes; 6 first sealing shrouds; 7 second sealing shrouds; 8 dividing plates; 9 grooves; 10 through holes; 11 push rods.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As depicted in figs. 1 and 2, syringe comprises plunger 1, push rod 11 and cylindrical shell 2, the lateral surface of plunger 1 and the inwall of cylindrical shell 2 are fitted and plunger 1 can move forward and backward along the length direction of cylindrical shell 2, one end and the plunger 1 of push rod 11 are fixed, the other end stretches out from the rear end of cylindrical shell 2, the front end of cylindrical shell 2 is provided with drain pipe 5, the sidewall of the front end of cylindrical shell 2 is provided with liquid flowing tube 4, during work, first drain pipe 5 is sealed and liquid flowing tube 4 is stretched in liquid, then pull back push rod 11, plunger 1 is moved backward, make liquid enter in cylindrical shell 2 from liquid flowing tube 4; Then liquid flowing tube 4 sealed and remove the sealing of drain pipe 5, driven forward push rod 11, plunger 1 is travelled forward, making liquid through filter assemblies 3, then discharge from cylindrical shell 2, reach the effect of filtration; Because the liquid flowing tube 4 of this syringe and drain pipe 5 are provided separately, make to get liquid and discharge opeing separately, easy to operate and filter effect better, it also avoid simultaneously do not filter liquid taking port place liquor residue on the impact of filter effect, improve the filter effect of syringe.
As shown in Figure 1, on the sidewall that liquid flowing tube 4 is located at main body 22 and liquid flowing tube 4 is one-body molded with main body 22, liquid flowing tube 4 is positioned at the rear end of dividing plate 8.Above-mentioned liquid flowing tube 4 is positioned at the rear end of dividing plate 8, and when therefore getting liquid, liquid through filter assemblies 3, thus can not avoid unfiltered liquid medicine contamination filter membrane 32, thus improves the filter effect of liquid.
As shown in Figure 1, liquid flowing tube 4 is provided with the first sealing shroud 6, and drain pipe 5 is provided with the second sealing shroud 7, and described first sealing shroud 6 to be set on described liquid flowing tube 4 and to form sealing, and described second sealing shroud 7 to be set on described drain pipe 5 and to form sealing, the design of the first sealing shroud 6 and the second sealing shroud 7 is in order to avoid when getting liquid, air enters from liquid outlet, liquid is caused to be drawn, or liquid taking port does not seal during fluid, liquid flows out from liquid taking port, when liquid flowing tube 4 and drain pipe 5 measure-alike, first sealing shroud 6 is also identical with the size of the second sealing shroud 7, now this syringe can only have a sealing shroud, with sealing cover, drain pipe 5 is sealed when getting liquid, during fluid, sealing shroud is taken off from drain pipe 5, and be set on liquid flowing tube 4 liquid flowing tube 4 is sealed, the design of the first sealing shroud 6 and the second sealing shroud 7 makes to get liquid and discharge opeing can both be carried out smoothly in the pipeline of correspondence, be conducive to the filter effect improving syringe.
As illustrated in fig. 1 and 2, be provided with filter assemblies 3 in cylindrical shell 2 and filter assemblies 3 between drain pipe 5 and liquid flowing tube 4, filter assemblies 3 comprises sealing ring 31, filter membrane 32 and gripper shoe 33, fagging 33 is for having the sieve plate of larger aperture, for supporting filter membrane 32, prevent its distortion or break, ensureing that liquid is smooth and easy simultaneously and pass through; Sealing ring 31 is annular, and the front end face of dividing plate 8 is provided with the groove 9 for fixed seal ring 31, and the center of dividing plate 8 is provided with the through hole 10 passed through for liquid.The design of sealing ring 31 can avoid liquid just to flow out from the connection space between filter membrane 32 and cylindrical shell 2 without filter membrane 32 filtration, improves the filter effect of syringe.
As shown in Figure 2, the side of filter membrane 32 is close on sealing ring 31, and the opposite side of filter membrane 32 is close in gripper shoe 33, and gripper shoe 33 is connected with the rear end of end cap 21.Because filter membrane 32 is thinner, the design of gripper shoe 33 can play good supporting role to filter membrane 32, filter membrane 32 is avoided to be out of shape in filter process or to break, affect filter effect, above-mentioned a kind of with in the syringe of filter, cylindrical shell 2 comprises end cap 21 and main body 22 and end cap 21 and main body 22 removably connect, and be provided with the dividing plate 8 for fixing filter assemblies 3 in main body 22, filter assemblies 3 is located between the rear end of end cap 21 and dividing plate 8.Above-mentioned end cap 21 and main body 22 can be threaded, and also can be connect and fix, and end cap 21 and main body 22 removably connect and conveniently change filter assemblies 3, improve the filter effect of syringe.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (7)
1. the syringe with filter, described syringe comprises plunger (1) and cylindrical shell (2), it is characterized in that, the lateral surface of described plunger (1) and the inwall of described cylindrical shell (2) are fitted and described plunger (1) can move forward and backward along the length direction of described cylindrical shell (2), the front end of described cylindrical shell (2) is provided with drain pipe (5), the sidewall of the front end of described cylindrical shell (2) is provided with liquid flowing tube (4), filter assemblies (3) is provided with and described filter assemblies (3) is positioned between described drain pipe (5) and described liquid flowing tube (4) in described cylindrical shell (2).
2. a kind of syringe with filter according to claim 1, it is characterized in that, described liquid flowing tube (4) is provided with the first sealing shroud (6), described drain pipe (5) is provided with the second sealing shroud (7), it is upper and form sealing that described first sealing shroud (6) is set in described liquid flowing tube (4), and it is upper and form sealing that described second sealing shroud (7) is set in described drain pipe (5).
3. a kind of syringe with filter according to claim 1 and 2, it is characterized in that, described cylindrical shell (2) comprises end cap (21) and main body (22) and described end cap (21) and main body (22) removably connect, be provided with the dividing plate (8) for fixing filter assemblies (3) in described main body (22), described filter assemblies (3) is located between the rear end of described end cap (21) and described dividing plate (8).
4. a kind of syringe with filter according to claim 3, it is characterized in that, on the sidewall that described liquid flowing tube (4) is located at described main body (22) and described liquid flowing tube (4) is one-body molded with described main body (22), described liquid flowing tube (4) is positioned at the rear end of described dividing plate (8).
5. a kind of syringe with filter according to claim 3, it is characterized in that, described filter assemblies (3) comprises sealing ring (31), filter membrane (32) and gripper shoe (33), described sealing ring (31) is fixed on the front end face of described dividing plate (8), the side of described filter membrane (32) is close on described sealing ring (31), the opposite side of described filter membrane (32) is close in described gripper shoe (33), and described gripper shoe (33) is connected with the rear end of described end cap (21).
6. a kind of syringe with filter according to claim 5, it is characterized in that, described sealing ring (31) is annular, the front end face of described dividing plate (8) is provided with the groove (9) for fixed seal ring (31), and the center of described dividing plate (8) is provided with the through hole (10) passed through for liquid.
7. a kind of syringe with filter according to claim 5, is characterized in that, described gripper shoe (33) is for having the sieve plate of larger aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520465083.1U CN204724032U (en) | 2015-06-30 | 2015-06-30 | A kind of syringe with filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520465083.1U CN204724032U (en) | 2015-06-30 | 2015-06-30 | A kind of syringe with filter |
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| Publication Number | Publication Date |
|---|---|
| CN204724032U true CN204724032U (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520465083.1U Active CN204724032U (en) | 2015-06-30 | 2015-06-30 | A kind of syringe with filter |
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| CN (1) | CN204724032U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112206844A (en) * | 2020-08-17 | 2021-01-12 | 武汉迈特维尔生物科技有限公司 | Device and method for filtering small-volume biological sample solution |
-
2015
- 2015-06-30 CN CN201520465083.1U patent/CN204724032U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112206844A (en) * | 2020-08-17 | 2021-01-12 | 武汉迈特维尔生物科技有限公司 | Device and method for filtering small-volume biological sample solution |
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