CN109464727A - Filtering exudate syringe - Google Patents
Filtering exudate syringe Download PDFInfo
- Publication number
- CN109464727A CN109464727A CN201811545612.3A CN201811545612A CN109464727A CN 109464727 A CN109464727 A CN 109464727A CN 201811545612 A CN201811545612 A CN 201811545612A CN 109464727 A CN109464727 A CN 109464727A
- Authority
- CN
- China
- Prior art keywords
- connector
- needle stand
- outer barrel
- annular surface
- needle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 35
- 210000000416 exudates and transudate Anatomy 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 241001149930 Protura <class> Species 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 238000009827 uniform distribution Methods 0.000 claims abstract description 10
- 239000012528 membrane Substances 0.000 claims abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005213 imbibition Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 241001411320 Eriogonum inflatum Species 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3145—Filters incorporated in syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M2005/3128—Incorporating one-way valves, e.g. pressure-relief or non-return valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/75—General characteristics of the apparatus with filters
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The present invention provides a kind of filtering exudate syringe, including syringe and injection needle, and lower needle stand includes conehead chamber, lower needle ring shape face and lower needle stand outer barrel, and circumference uniform distribution is equipped with multiple grooves on lower needle ring shape face；Connector includes connector outer barrel, connector annular surface and connector inner cylinder, and circumference uniform distribution is equipped with multiple connector through-holes on connector annular surface；Upper needle stand includes upper needle stand outer barrel, upper needle stand frustum and steel needle fixing seat, the inner sidewall of the inner sidewall and upper needle stand outer barrel of the lateral wall of connector outer barrel and lower needle stand outer barrel is interference fitted, unidirectional valve circle piece is arranged between lower needle ring shape face and connector inner cylinder down, check valve guide post is movably inserted into connector inner cylinder, the downside of connector annular surface is arranged in the filter membrane of annular, and the upside of connector annular surface is equipped with the upper check valve of annular.It is highly-safe the beneficial effects of the invention are as follows unidirectional filtering.
Description
Technical field
The invention belongs to medical instruments fields, more particularly, to a kind of filtering exudate syringe.
Background technique
It is well known that the injection of clinical use is encapsulated in vial more at present, with the syringe needle of syringe prick rubber stopper or
When cutting vial extraction medical fluid with grinding wheel, bottle stopper material bits or glass powder can enter in injection.Traditional syringe does not have
There is filtering function, these impurity can be extracted into syringe when extracting liquid medicine and direct injection is to patient, to induce quiet
The diseases such as arteries and veins inflammation.
The filtration syringe of Patent No. CN103721321A is unreasonable since one-way valve structures design, and exists to syringe
Since the extruding of negative pressure can be such that the channel among check valve also opens when interior extraction liquid, medical fluid can be from the centre of check valve
Channel enters syringe without filtering, there is the halfway risk of filtering, and original structure is filtering when extracting medical fluid, there is note
The risk that the impurity filtered before can be injected away again when penetrating medical fluid.
Summary of the invention
A kind of the object of the present invention is to provide structures simple, highly-safe filtering exudate syringe.
The technical scheme is that
Filtering exudate syringe, including syringe and injection needle, injection needle include lower needle stand, lower check valve, filtering
Film, connector, upper check valve, upper needle stand and the steel needle being fixed on needle stand, lower needle stand include conehead chamber, lower needle ring shape face
With lower needle stand outer barrel, conehead chamber is connected with syringe conehead, and the inner circle in lower needle ring shape face is connected with conehead chamber, lower needle stand
The outer circle of annular surface is vertically connected with lower needle stand outer barrel, and circumference uniform distribution is equipped with multiple grooves on lower needle ring shape face；Connector
Including connector outer barrel, connector annular surface and connector inner cylinder, the outer circle and connector outer barrel of connector annular surface
It is vertically connected, inner circle and the connector inner cylinder of connector annular surface are vertically connected, and circumference uniform distribution is equipped on connector annular surface
Multiple connector through-holes；Lower check valve includes lower unidirectional valve circle piece and the lower check valve that is vertically set in the middle part of lower unidirectional valve circle piece
Guide post；Upper needle stand includes upper needle stand outer barrel, upper needle stand frustum and steel needle fixing seat, great circle and the upper needle stand of upper needle stand frustum
One end of outer barrel is connected, and the roundlet of upper needle stand frustum is connected with columnar steel needle fixing seat, and steel needle is arranged in steel needle
In fixing seat, the inner sidewall of the lower end of the lateral wall of connector outer barrel and lower needle stand outer barrel is interference fitted, connector outer cylinder
The inner sidewall of the upper end of the lateral wall of body and upper needle stand outer barrel is interference fitted, and lower unidirectional valve circle piece is arranged in lower needle ring shape face
Between connector inner cylinder, lower check valve guide post is movably inserted into connector inner cylinder, and annular filter membrane is set
It sets in the downside of connector annular surface, the upside of connector annular surface is equipped with the upper check valve of annular.
When filtering exudate syringe feed liquor of the present invention, under the pressure effect of imbibition, upper closed check valve, lower unidirectional valve circle
Piece is tightly attached on lower needle ring shape face, and gap of the medical fluid between connector inner cylinder inner sidewall and lower check valve guide post enters
Then it is intracavitary to enter conehead by the groove on lower needle ring shape face for cavity to below connector annular surface.Inject liquid
When, it under the effect of the pressure, is separated between lower unidirectional valve circle piece and lower needle ring shape face, lower unidirectional valve circle piece and connector inner cylinder
Body fits closely between lower end, and medical fluid is flowed up by the groove on lower needle ring shape face, by filter membrane, in the work of pressure
Under, the gap between upper check valve and connector annular surface is opened, and the medical fluid by filtering is discharged from steel needle.
The length of groove is equal to the difference of lower needle ring shape face exradius and inner circle radius.
Liquid is convenient for feed liquor and out, reduces the thrust for pushing push rod, and the length of groove is equal to lower needle ring shape face inner circle
The difference of radius and exradius, uses lesser pressure in this way, and medical fluid can be injected by groove and inlet hydraulic is small.
The distance between connector inner cylinder and lower needle ring shape face be less than connector outer barrel and lower needle ring shape face it
Between distance.
Difference in height namely between connector inner cylinder and connector outer barrel is capable of providing to lower unidirectional valve circle piece one
The space of a up and down motion.
The diameter of unidirectional valve circle piece is greater than the intracavitary diameter of conehead down, is less than connector outer barrel internal diameter.
The upper end of connector inner cylinder lateral wall is equipped with annular groove, and upper check valve is set in annular groove.
Upper check valve is set in annular groove, being connected firmly between upper check valve and connector inner cylinder, increases note
When injection pressure, the gap between upper individual event valve outer circle and connector annular surface is opened, without will lead to entire upper check valve from even
It falls off on fitting inner cylinder.
The diameter of lower check valve guide post is less than the internal diameter of connector inner cylinder.
The diameter of connector through-hole lower end is greater than the diameter of connector through-hole upper end.
Upper needle stand further includes upper needle stand annular surface, and the inner circle of upper needle stand annular surface is connected with the great circle of upper needle stand frustum,
The outer circle of upper needle stand annular surface is vertically connected with upper needle stand outer barrel.
Circumference uniform distribution is equipped with positioning bar on the lateral wall of steel needle fixing seat and upper needle stand frustum.
The advantages and positive effects of the present invention are: due to the adoption of the above technical scheme, filtering exudate syringe feed liquor
It does not filter, filtering exudate, unidirectional to filter, filter pressure is small, and highly-safe, rapid operation is convenient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of filtering exudate syringe of the present invention
Fig. 2 is filtering exudate syringe needle explosive view of the present invention
Fig. 3 is needle stand structure schematic diagram under filtering exudate syringe of the present invention
Fig. 4 is filtering exudate syringe connecting-piece structure schematic diagram of the present invention
Fig. 5 is filtering exudate syringe feed liquor status architecture schematic diagram of the present invention
Fig. 6 is that filtering exudate syringe of the present invention goes out liquid status structural schematic diagram
In figure:
1, syringe 2, lower needle stand 3, lower check valve 4, filter membrane
5, connector 6, upper check valve 7, upper needle stand 8, steel needle
21, lower needle stand outer barrel 22, conehead chamber 23, lower needle ring shape face 24, groove
25, knit stitch block hole 31, lower check valve guide post 32, lower unidirectional valve circle piece 51, connector outer barrel
52, connector inner cylinder 53, connector annular surface 54, connector through-hole 71, upper needle stand outer barrel
72, upper needle stand frustum 73, positioning bar 74, steel needle fixing seat 75, upper needle stand annular surface
Specific embodiment
As shown in Figure 1 and Figure 2, filtering exudate syringe of the present invention, including syringe 1 and injection needle, injection needle include
Lower needle stand 2, lower check valve 3, filter membrane 4, connector 5, upper check valve 6, upper needle stand 7 and the steel needle 8 being fixed on needle stand 7,
As shown in figure 3, lower needle stand 2 includes conehead chamber 22, lower needle ring shape face 23 and lower needle stand outer barrel 21, conehead chamber 22 and syringe
1 conehead is connected, and the inner circle in lower needle ring shape face 23 is connected with conehead chamber 22, outside the outer circle in lower needle ring shape face 23 and lower needle stand
Cylinder 21 is vertically connected, and circumference uniform distribution is equipped with multiple grooves 24 on lower needle ring shape face 23；As shown in figure 4, connector 5 includes connecting
Fitting outer barrel 51, connector annular surface 53 and connector inner cylinder 52, the outer circle and connector outer cylinder of connector annular surface 53
It is vertically connected in the middle part of 52 inner sidewall of body, the inner circle of connector annular surface 53 phase vertical with connector inner cylinder 51 lateral wall middle part
Even, circumference uniform distribution is equipped with multiple connector through-holes 54 on connector annular surface 53；Lower check valve 3 includes lower unidirectional 32 He of valve circle piece
It is vertically set on the lower check valve guide post 31 at lower 32 middle part of unidirectional valve circle piece；Upper needle stand 7 includes upper needle stand outer barrel 71, upper needle
Seat frustum 72 and steel needle fixing seat 74, the great circle of upper needle stand frustum 72 are connected with one end of upper needle stand outer barrel 71, upper needle stand
The roundlet of frustum 72 is connected with columnar steel needle fixing seat 74, and steel needle 8 is arranged in steel needle fixing seat 74, connector outer cylinder
The inner sidewall of the lower end of the lateral wall of body 51 and lower needle stand outer barrel 21 is interference fitted, the lateral wall of connector outer barrel 51 it is upper
End and the inner sidewall of upper needle stand outer barrel 71 are interference fitted, and lower unidirectional valve circle piece 32 is arranged in lower needle ring shape face 23 and connector
Between inner cylinder 52, lower check valve guide post 31 is movably inserted into connector inner cylinder 52, and annular filter membrane 4 is arranged
In the downside of connector annular surface 53, the upside of connector annular surface 53 is equipped with the upper check valve 6 of annular.
As shown in Figure 5, Figure 6, in order to reduce the pressure of imbibition and injection, increase the circulation path of medical fluid, the length of groove 24
Degree is equal to the difference of lower needle ring shape face 23 exradius and inner circle radius.
The distance between connector inner cylinder 52 and lower needle ring shape face 23 are less than connector outer barrel 51 and lower needle ring
The distance between shape face 23.Under namely unidirectional valve circle piece 32 can below connector inner cylinder 52 with lower needle ring shape face 23
Between gap move up and down.
Further, the diameter of lower unidirectional valve circle piece 32 is greater than 22 internal diameter of conehead chamber, is less than 51 internal diameter of connector outer barrel.
In order to be firmly fixed to upper check valve 6 on connector inner cylinder 52, in 52 lateral wall of connector inner cylinder
Upper end is equipped with annular groove, and upper check valve 6 is set in annular groove.In this way injection pressure can only make 6 outer circle of check valve with
Gap between connector annular surface 53 is opened, and is fallen off from connector inner cylinder 52 without making entirely to go up check valve 6.
The diameter of lower check valve guide post 31 is less than the internal diameter of connector inner cylinder 52.
The diameter of 54 lower end of connector through-hole is greater than the diameter of 54 upper end of connector through-hole.
Upper needle stand 7 further includes upper needle stand annular surface 75, the great circle of the inner circle of upper needle stand annular surface 75 and upper needle stand frustum 72
It is connected, the outer circle of upper needle stand annular surface 75 is vertically connected with upper needle stand outer barrel 71.
Circumference uniform distribution is equipped with positioning bar 73 on the lateral wall of steel needle fixing seat 74 and upper needle stand frustum 72.
The course of work of this example:
As shown in figure 5, under the pressure effect of imbibition, upper check valve 6 is closed when filtering exudate syringe feed liquor of the present invention
It closes, lower unidirectional valve circle piece 32 is tightly attached on lower needle ring shape face 23, and medical fluid is from 52 inner sidewall of connector inner cylinder and lower check valve
Gap between guide post 31 enters the cavity of 53 lower section of connector annular surface, then by recessed on lower needle ring shape face 23
Slot is entered in conehead chamber 22 by knit stitch block hole 25.
As shown in fig. 6, when injecting liquid, under the effect of the pressure, lower unidirectional valve circle piece 32 and lower needle ring shape face 23 it
Between separate, fitted closely between lower unidirectional valve circle piece 32 and 52 lower end of connector inner cylinder, medical fluid passes through lower needle ring shape face 23
On groove 24 flow up, by filter membrane, under the effect of the pressure, pass through the connector through-hole on connector annular surface 53
54, the gap between upper check valve 6 and connector annular surface 53 is opened, and the medical fluid by filtering is discharged from steel needle 8.
One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should still be within the scope of the patent of the present invention.
Claims (9)
1. filtering exudate syringe, including syringe and injection needle, it is characterised in that: injection needle includes lower needle stand, places an order
To valve, filter membrane, connector, upper check valve, upper needle stand and the steel needle being fixed on upper needle stand, lower needle stand include conehead chamber, under
Needle stand annular surface and lower needle stand outer barrel, conehead chamber are connected with syringe conehead, the inner circle and conehead chamber in lower needle ring shape face
It is connected, outer circle and the lower needle stand outer barrel in lower needle ring shape face are vertically connected, and circumference uniform distribution is equipped with multiple on lower needle ring shape face
Groove；Connector includes connector outer barrel, connector annular surface and connector inner cylinder, the outer circle of connector annular surface and company
Fitting outer barrel is vertically connected, and inner circle and the connector inner cylinder of connector annular surface are vertically connected, circle on connector annular surface
It is laid with multiple connector through-holes week；Lower check valve includes lower unidirectional valve circle piece and is vertically set in the middle part of lower unidirectional valve circle piece
Lower check valve guide post；Upper needle stand includes upper needle stand outer barrel, upper needle stand frustum and steel needle fixing seat, upper needle stand frustum it is big
Circle is connected with one end of upper needle stand outer barrel, and the roundlet of upper needle stand frustum is connected with columnar steel needle fixing seat, steel needle
It is arranged in steel needle fixing seat, the inner sidewall of the lower end of the lateral wall of connector outer barrel and lower needle stand outer barrel is interference fitted,
The inner sidewall of the upper end of the lateral wall of connector outer barrel and upper needle stand outer barrel is interference fitted, and lower unidirectional valve circle piece is arranged under
Between needle stand annular surface and connector inner cylinder, lower check valve guide post is movably inserted into connector inner cylinder, annular
Filter membrane the downside of connector annular surface is set, the upside of connector annular surface is equipped with the upper check valve of annular.
2. filtering exudate syringe according to claim 1, it is characterised in that: the length of groove is equal to lower needle ring shape face
The difference of exradius and inner circle radius.
3. filtering exudate syringe according to claim 2, it is characterised in that: connector inner cylinder and lower needle ring shape face
The distance between be less than the distance between connector outer barrel and lower needle ring shape face.
4. filtering exudate syringe according to claim 1 to 3, it is characterised in that: lower unidirectional valve circle piece it is straight
Diameter is greater than the intracavitary diameter of conehead, is less than connector outer barrel internal diameter.
5. filtering exudate syringe according to claim 4, it is characterised in that: the upper end of connector inner cylinder lateral wall is set
There is annular groove, upper check valve is set in annular groove.
6. filtering exudate syringe according to claim 5, it is characterised in that: the diameter of lower check valve guide post, which is less than, to be connected
The internal diameter of fitting inner cylinder.
7. filtering exudate syringe according to claim 6, it is characterised in that: the diameter of connector through-hole lower end, which is greater than, to be connected
The diameter of fitting through-hole upper end.
8. filtering exudate syringe according to claim 7, it is characterised in that: upper needle stand further includes upper needle stand annular surface,
The inner circle of upper needle stand annular surface is connected with the great circle of upper needle stand frustum, and the outer circle of upper needle stand annular surface and upper needle stand outer barrel hang down
It is straight to be connected.
9. filtering exudate syringe according to claim 8, it is characterised in that: steel needle fixing seat and upper needle stand frustum it is outer
Circumference uniform distribution is equipped with positioning bar on side wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811545612.3A CN109464727A (en) | 2018-12-17 | 2018-12-17 | Filtering exudate syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811545612.3A CN109464727A (en) | 2018-12-17 | 2018-12-17 | Filtering exudate syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109464727A true CN109464727A (en) | 2019-03-15 |
Family
ID=65676156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811545612.3A Withdrawn CN109464727A (en) | 2018-12-17 | 2018-12-17 | Filtering exudate syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109464727A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210100691A1 (en) * | 2019-10-08 | 2021-04-08 | Convatec Limited | Wound exudate management systems |
| CN114748734A (en) * | 2022-03-28 | 2022-07-15 | 李开雄 | Precise filtering injector |
-
2018
- 2018-12-17 CN CN201811545612.3A patent/CN109464727A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210100691A1 (en) * | 2019-10-08 | 2021-04-08 | Convatec Limited | Wound exudate management systems |
| CN114748734A (en) * | 2022-03-28 | 2022-07-15 | 李开雄 | Precise filtering injector |
| CN114748734B (en) * | 2022-03-28 | 2024-06-11 | 李开雄 | Precise filtering injector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190315 |