CN110302450A - A kind of filtration syringe and its working method - Google Patents
A kind of filtration syringe and its working method Download PDFInfo
- Publication number
- CN110302450A CN110302450A CN201910478530.XA CN201910478530A CN110302450A CN 110302450 A CN110302450 A CN 110302450A CN 201910478530 A CN201910478530 A CN 201910478530A CN 110302450 A CN110302450 A CN 110302450A
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- CN
- China
- Prior art keywords
- syringe
- groove
- cover
- upper cover
- deflector hole
- 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.)
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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
Abstract
The invention discloses a kind of filtration syringe and its working methods, comprising: the rear end of syringe is provided with piston core pin；Filter is set in syringe, and filter is located at the front end of syringe；Integral type injection molding steel needle is set to the front end of syringe.The present invention air that liquid storage chamber easily enters when extracting medical fluid, the upper surface of built-in liquid medicine filter are the conical surface convenient for gas collection emptying.
Description
Technical field
The present invention relates to the technical field of filter more particularly to a kind of technical fields of filtration syringe.
Background technique
Currently, medicine adding syringe used in venous transfusion dosing is ordinary syringe, ordinary syringe is all no will
The function of medical filtration, generally in dosing, the rubber stopper of liquid medicine bottle is pricked by syringe needle will form rubber particle with syringe needle one later
It rises and enters in liquid medicine, also, the particle in same liquid medicine bottle can also enter in liquid medicine；And as injection is injected into people together
In body, enter inside of human body using blood, to form the lesion and tumor variation of inside of human body tissue, transfusion particle is to people
The harm that body generates has been the known fact.
Solving the above problems at present is precision infusion set by using filter, and the price of this precision infusion set is more general
Logical syringe is expensive, and filter effect is bad.
In addition, existing syringe has been after having injected, due to the exposure of syringe needle, be easy to cause patient and medical personnel by
Wound.
Summary of the invention
In view of the above deficiencies, now design forms filtering to medical fluid by the way that micron-sized second filter membrane is arranged, and reduces medical fluid
In impurity, avoid to human body generate adverse effect.
In order to achieve the above object, the invention adopts the following technical scheme:
A kind of filtration syringe, wherein include:
The rear end of syringe, the syringe is provided with piston core pin；
Before filter, the filter are set in the syringe, and the filter is located at the syringe
End；
Integral type is molded steel needle, and the integral type injection molding steel needle is set to the front end of the syringe.
Above-mentioned a kind of filtration syringe, wherein the filter includes lower cover and upper cover；The upper surface of the lower cover is equipped with
First groove and first annular groove；First groove is located at the middle part of the lower cover, and the first annular groove is located at institute
The outside of the first groove is stated, forms a first annular protrusion between the first annular groove and first groove；Described
The bottom surface of one groove is inclined-plane, and the left side on the inclined-plane is lower than the right side on the inclined-plane；It opens the bottom surface of the first annular groove
If deflector hole under several lower covers, deflector hole is penetrated through to the lower surface of the lower cover under several lower covers；The following table of the lower cover
Drainage trough is set in the middle part of face；The conical surface opens up several radial passages, one end of each radial passage and ipsilateral institute
It states deflector hole under lower cover to be connected to, the other end of the same radial passage connects with the lower drainage trough；First groove
Bottom surface open up first through hole, the first through hole is penetrated through to the lower drainage trough；
The upper cover is placed on the lower cover；The upper surface of the upper cover sets for the conical surface and covers deflector hole, on the upper lid
Deflector hole is penetrated through to the lower surface of the upper cover；The upper surface of the upper cover also opens up deflector hole under several upper covers, several described
Deflector hole respectively corresponds deflector hole under several lower covers under upper cover；The lower surface of the upper cover opens up several baffle convex ribs, if
Do the baffle convex ribs around it is described it is upper cover deflector hole, and the baffle convex ribs for being located at left side are higher than remaining described gear
Piece convex ribs；The lower surface of the upper cover is additionally provided with one second annular protrusion, and second annular protrusion is located at several baffles
The outside of convex ribs；The first annular protrusion is embedded between several baffle convex ribs and second annular protrusion；
First filter membrane, first filter membrane are set to the bottom surface of first groove；The baffle positioned at left side
The lower end of convex ribs presses on the left side of the upper surface of first filter membrane；
Second filter membrane, second filter membrane are set to the bottom surface of the first annular groove.
Above-mentioned a kind of filtration syringe, wherein the upper cover further include: four extensions, two extending parts are in first
Straight line, another two extending part is in second straight line, the first straight line and second straight line is perpendicular and same plane；Often
One end of one extension is connected to the upper inner wall for covering deflector hole, and the other end of the same extension is equal
It is provided with arc notch；Four arc notch of four extensions are respectively positioned on the edge of same circle；And prolong described in each
The lower end surface of extending portion is concordant with the lower surface of the upper cover.
Above-mentioned a kind of filtration syringe, wherein the upper cover further include: four strip bulges, the four strip bulge difference
It is set to the lower end surface of four extensions.
Above-mentioned a kind of filtration syringe, wherein it is downward convex that one is provided on the left of the outer rim of the lower surface of the upper cover
Structure is played, is provided with a groove structure on the left of the outer rim of the upper surface of the lower cover；The bulge-structure is embedded in the groove
In structure.
Above-mentioned a kind of filtration syringe, wherein the lower cover further include: cross structure, the cross structure are set to institute
It states in through-hole, and the thickness in the left side of the cross structure is lower than the thickness on the right side of the cross structure；The stauros
Structure is corresponding with four extensions.
Above-mentioned a kind of filtration syringe, wherein the integral type injection molding steel needle includes that needle shield, syringe needle and three sections are received
Contracting set；The pinhead sleeve portion of the syringe is externally provided with pipe portion, is equipped with internal screw thread in the pipe portion；Three section shrinks the rear end of set
External screw thread is set, and the external screw thread is matched with the internal screw thread；The front end that three section shrinks set is provided with the syringe needle；It is described
Needle shield is placed on the front end that three section shrinks set.
Above-mentioned a kind of filtration syringe, wherein three section shrinks set and includes syringe needle retaining sleeve, first set portion and second set
Portion；The rear end of the syringe needle retaining sleeve is provided with external screw thread, and the front end of the syringe needle retaining sleeve is clamped with syringe needle；The syringe needle folder
The outer sheath for holding set has the first set portion；The rear end in the first set portion is provided with first step portion, the first set portion
Front end is equipped with the first inlay card portion；The outer sheath in the first set portion has second set of portion；The front end in second set of portion is arranged
There is annular baffle, the rear end in second set of portion is provided with second step portion；The middle part of the lateral surface in second set of portion is arranged
Help pushed section and annular the first caulking groove, the inner wall in second set of portion be provided with annular the second caulking groove, described second
Caulking groove matches with first inlay card portion.
Above-mentioned a kind of filtration syringe, wherein the rear end of the inner wall of the needle shield is provided with lug boss, described convex
The portion of rising is matched with first caulking groove.
A kind of working method of filtration syringe, wherein including any one of the above filtration syringe；The working method
Include:
Step 1: first filter membrane is opened up due to negative pressure when taking liquid；The left side of first filter membrane at this time
It will receive compressing for the longest baffle convex ribs in left side, medical fluid can be convex via first groove and remaining described baffle
It in the interstitial flow to first groove that muscle is formed, then flows in syringe via the upper deflector hole of covering, completes to take
Medicine movement；
Step 2: first filter membrane is oppressed due to positive pressure in the inclined seal platform, thus close when fluid injection
It closes；At this point, medical fluid will be by deflector hole under the conical surface of the upper surface of the upper cover, the upper cover, second filter membrane, described
Deflector hole, the radial passage to the lower drainage trough under lower cover, to flow out the syringe；
Step 3: user presses the boosting portion by a hand after having injected medical fluid, meanwhile, another hand
The syringe is held to extract；So that the first set portion and second set of portion that three section shrinks set are backwards to the note
The direction of emitter slides, so that the first set portion and second set of portion cover the syringe needle.
With above technical scheme, can reach it is following the utility model has the advantages that
First filter membrane of the invention is 10 nanoscales, has the characteristics that hydrophily and hydrophobicity, is convenient for medicine at injection initial stage
Unfiltered medical fluid is discharged in advance inside gas and built-in liquid medicine filter in liquid liquid storage chamber.
The present invention air that liquid storage chamber easily enters when extracting medical fluid, the upper surface of built-in liquid medicine filter be the conical surface just
It is emptied in gas collection.
Inclined seal platform is covered under the present invention, a baffle convex ribs built in upper cover are down along stretching to the first filter membrane
Side so that the first filter membrane of positioning, and opening and closing for the first filter membrane being convenient for.
The present invention shrinks set by three sections of setting so that syringe needle can be covered after inject, thus avoid to patient with
The damage of medical personnel.
Detailed description of the invention
Fig. 1 is a kind of cross-sectional view of filtration syringe of the invention；
Fig. 2 is the enlarged drawing of the C of Fig. 1；
Fig. 3 is a kind of cross-sectional view of filter of the invention；
Fig. 4 is the enlarged drawing of the A of Fig. 3；
Fig. 5 is the enlarged drawing of the B of Fig. 3；
Fig. 6 is a kind of perspective view of the overlook direction of the lower cover of filtration syringe of the invention；
Fig. 7 is the perspective view of a kind of lower cover of filtration syringe of the invention and the overlook direction of the second filter membrane；
Fig. 8 is the perspective view of a kind of lower cover of filtration syringe of the invention and the overlook direction of the second filter membrane；
Fig. 9 is a kind of perspective view of the overlook direction of the upper cover of filtration syringe of the invention；
Figure 10 is a kind of perspective view for looking up direction of the upper cover of filtration syringe of the invention.
In attached drawing: 1, syringe；11, piston core pin；12, pinhead sleeve portion；13, pipe portion；131, internal screw thread；2, filter；
21, lower cover；211, the first groove；2110, clamping cylinder；2111, first through hole；2112, inclined seal platform；212, the first ring
Connected in star；2121, deflector hole under lower cover；2122, first annular washer；2123, the second ring washer；213, first annular convex
It rises；214, lower drainage trough；215, radial passage；22, upper cover；221, upper to cover deflector hole；222, deflector hole under upper cover；223, it keeps off
Piece convex ribs；224, the second annular protrusion；23, the first filter membrane；24, the second filter membrane；25, extension；251, arc notch；
26, strip bulge；27, bulge-structure；28, groove structure；29, cross structure；3, integral type is molded steel needle；31, needle protection
Cover；311, stage portion；312, lug boss；32, syringe needle；33, three sections shrink set；331, syringe needle retaining sleeve；3311, external screw thread；
332, first set portion；3321, first step portion；3322, the first inlay card portion；333, second set of portion；3331, annular baffle；3332,
Second step portion；3333, boosting portion；3334, the first caulking groove；3335, the second caulking groove.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
Fig. 1 is a kind of cross-sectional view of filtration syringe of the invention；Fig. 2 is the enlarged drawing of the C of Fig. 1；Fig. 3 is of the invention
A kind of cross-sectional view of filter；Fig. 4 is the enlarged drawing of the A of Fig. 3；Fig. 5 is the enlarged drawing of the B of Fig. 3；Fig. 6 is one kind of the invention
The perspective view of the overlook direction of the lower cover of filtration syringe；Fig. 7 is the lower cover and the second mistake of a kind of filtration syringe of the invention
The perspective view of the overlook direction of filter membrane；Fig. 8 is a kind of lower cover of filtration syringe of the invention and the vertical view side of the second filter membrane
To perspective view；Fig. 9 is a kind of perspective view of the overlook direction of the upper cover of filtration syringe of the invention；Figure 10 is of the invention
A kind of perspective view for looking up direction of the upper cover of filtration syringe.
Referring to Figure 1 to shown in Figure 10, in a kind of preferred embodiment, a kind of filtration syringe, comprising:
Syringe 1, the rear end of syringe 1 are provided with piston core pin 11.
Filter 2, filter 2 are set in syringe 1, and filter 2 is located at the front end 1 of syringe.
Integral type is molded steel needle 3, and integral type injection molding steel needle 3 is set to the front end of syringe 1.
The above is only preferred embodiments of the present invention, are not intended to limit the implementation manners and the protection scope of the present invention.
Further, in a kind of preferred embodiment, filter 2 includes lower cover 21 and upper cover 22；The upper surface of lower cover 21 is set
There are the first groove 211 and first annular groove 212；First groove 211 is located at the middle part of lower cover 21, and first annular groove 212
In the outside of the first groove 211, one first annular raised 213 is formed between first annular groove 212 and the first groove 211；The
The bottom surface of one groove 211 is inclined-plane, and the left side on inclined-plane is lower than the right side on inclined-plane；The bottom surface of first annular groove 212 opens up circumference
Deflector hole 2121 under several lower covers of array, the perforation of deflector hole 2121 is to its lower surface under several lower covers；The lower surface of lower cover 21
A plane is arranged in middle part for the conical surface, the conical surface, and plane sets a up-narrow and down-wide lower drainage trough 214；The conical surface opens up circumference array
Several radial passages 215, one end of each radial passage 215 is connected to deflector hole 2121 under ipsilateral lower cover, and same radial direction is logical
The other end in road 215 connects with lower drainage trough 214；The bottom surface of first groove 211 opens up first through hole 2111, first through hole
2111 penetrate through to lower drainage trough 214.
Further, in a kind of preferred embodiment, upper cover 22 is placed on lower cover 21；The upper surface of upper cover 22 is the conical surface, should
It is opened up in the middle part of the conical surface and covers deflector hole 221, it is upper to cover the perforation of deflector hole 221 to the lower surface of upper cover 22；Upper cover 22 it is upper
Surface also opens up deflector hole 222 under several upper covers of circumference array, and deflector hole 222 respectively corresponds under several lower covers under several upper covers
Deflector hole 2121；The lower surface of upper cover 22 opens up several baffle convex ribs 223 of circumference array, and several baffle convex ribs 223 are around upper
Deflector hole 221 is covered, and the baffle convex ribs 223 for being located at left side are higher than remaining baffle convex ribs 223；The lower surface of upper cover 22 is also
Equipped with one second annular protrusion 224, the second annular protrusion 224 is located at the outside of several baffle convex ribs 223；Several baffle convex ribs
223 and second are embedded with first annular raised 213 between annular protrusion 224.
Further, in a kind of preferred embodiment, the first filter membrane 23, the first filter membrane 23 be 10 nanoscales, first
Filter membrane 23 is set to the bottom surface of the first groove 211；The first filter membrane 23 is pressed on positioned at the lower end of the baffle convex ribs 223 in left side
Upper surface left side；
Further, in a kind of preferred embodiment, the second filter membrane 24, the second filter membrane 24 is micron order, the second mistake
Filter membrane 24 is set to the bottom surface of first annular groove 212, and there are gaps between the second filter membrane 24 and the lower surface of upper cover 22.
Further, in a kind of preferred embodiment, upper cover 22 further include: four extensions 25, two extensions 25 are located at first
Straight line, another two extension 25 are located at second straight line, first straight line and second straight line is perpendicular and same plane；Each extension 25
One end be connected to the inner wall for covering deflector hole 221, the other end of same extension 25 is provided with arc notch
251；Four arc notch 251 of four extensions 25 are respectively positioned on the edge of same circle；And the lower end surface of each extension 25 with it is upper
The lower surface of lid 22 is concordant.
Further, in a kind of preferred embodiment, upper cover 22 further include: four strip bulges 26, four strip bulges 26 difference
It is set to the lower end surface of four extensions 25.
Further, in a kind of preferred embodiment, it is downward convex that one is provided on the left of the outer rim of the lower surface of upper cover 22
Structure 27 is played, is provided with a groove structure 28 on the left of the outer rim of the upper surface of lower cover 21；Bulge-structure 27 is embedded in groove structure
In 28.
Further, in a kind of preferred embodiment, lower cover 21 further include: cross structure 29, cross structure 29 are set to
In one through-hole 2111, and the thickness in the left side of cross structure 29 is lower than the thickness on the right side of cross structure 29；Cross structure 29
It is corresponding with four extensions 25.
Further, in a kind of preferred embodiment, it includes needle shield 31, syringe needle 32 and three that integral type, which is molded steel needle 3,
Section shrinks set 33；The pinhead sleeve portion 12 of syringe 1 is externally provided with pipe portion 13, is equipped with internal screw thread 131 in pipe portion 13；Three sections shrink set 33
Rear end external screw thread 3311 is set, external screw thread 3311 is matched with internal screw thread 131；The front end that three sections shrink set 33 is provided with syringe needle
32；Needle shield 31 is placed on the front end that three sections shrink set 33.
Further, in a kind of preferred embodiment, it includes syringe needle retaining sleeve 331,332 and of first set portion that three sections, which shrink set 33,
Second set of portion 333；The rear end of syringe needle retaining sleeve 331 is provided with external screw thread 3311, and the front end of syringe needle retaining sleeve 331 is clamped with syringe needle
32；The outside of syringe needle retaining sleeve 331 is cased with first set portion 332；The rear end in first set portion 332 is provided with first step portion 3321,
The front end in first set portion 332 is equipped with the first inlay card portion 3322；The outside in first set portion 332 is cased with second set of portion 333；Second set of portion
333 front end is provided with annular baffle 3331, and the rear end in second set of portion 333 is provided with second step portion 3332；Second set of portion 333
Lateral surface in the middle part of be provided with first caulking groove 3334 in boosting portion 3333 and annular, the inner wall in second set of portion 333 is provided with
Second caulking groove 3335 of annular, the second caulking groove 3335 match with the first inlay card portion 3322.
Further, in a kind of preferred embodiment, needle shield 31 is provided with stage portion 311, needle shield 31
The rear end of inner wall is provided with lug boss 312, and lug boss 312 is matched with the first caulking groove 3334.
Further, in a kind of preferred embodiment, lower cover 21 further include: several clamping cylinders 2110, several clamping cylinders
2110 circumference array are set to the inner wall of the first groove 211.
Further, it is provided with the inclined seal platform 2112 of an annular in a kind of preferred embodiment, on inclined-plane, tilts close
It seals pad on platform 2112 and is equipped with the first filter membrane 23.
Further, in a kind of preferred embodiment, it is first annular that the inner ring of the bottom surface of first annular groove 212 is provided with one
Washer 2122, the outer ring of the bottom surface of first annular groove 212 are provided with one second ring washer 2123；Second filter membrane 24 it is interior
Circle is padded on first annular washer 2122, and the outer ring of the second filter membrane 24 is padded on the second ring washer 2123.
In addition to the implementation, the present invention also has following working method
As shown in figure 3, being respectively formed independent upper and lower two flow-guiding channels after upper cover 22 and lower cover 21 connect；Drawn by down
Chute 214, first through hole 2111, the first groove 11 and upper deflector hole 221 of covering form upper flow-guiding channel；By the upper of upper cover 22
Deflector hole 2121 forms lower flow-guiding channel under deflector hole 222 and lower cover under the conical surface on surface, upper cover；
When drawing medical fluid, due to the suction function of syringe 1, the first filter membrane 23 is slightly opened upwards, and at this time first
The left side of filter membrane 23 will receive compressing for the longest baffle convex ribs 223 in left side, can be to the side small to its resistance according to medical fluid
To flow principles, medical fluid can be via the first groove 211 and remaining baffle convex ribs 223 (except the longest baffle convex ribs 223 in left side
Baffle convex ribs 223 in addition) it is formed in interstitial flow to the first groove 211, then injection is flowed to via upper deflector hole 221 of covering
In device 1, completion takes medicine to act.
When liquid medicine injection, due to the positive pressure of syringe 1, the nanofiltration film of the first filter membrane 23 can be oppressed
In inclined seal platform 2112, so that liquid storage chamber, (liquid storage chamber refers to closed rear first mistake of the first filter membrane 23 while closed
The cavity that the lower section of filter membrane 23 and syringe 1 are formed) in filtered medical fluid and air exclude to lose in advance；And the first filtering
Film 23 can play nanofiltration；At this point, medical fluid will be by deflector hole 222, second under the conical surface of the upper surface of upper cover 22, upper cover
Deflector hole 2121 and radial passage 215 to lower drainage trough 214 flow out syringe 1 under filter membrane 24, lower cover.Since medical fluid passes through
Micron-sized second filter membrane 24 is crossed, impurity in filtered medical fluid and particle will be excluded.
After having injected medical fluid, boosting portion 3333 is pressed by a hand, meanwhile, another is held syringe 1 and is carried out
It extracts；So that three sections shrink the first set portion 332 of set 33 and second set of portion 333 slides backwards to the direction of syringe 1, thus
So that first set portion 332 and second set of portion 333 cover syringe needle 32.
The above is only preferred embodiments of the present invention, are not intended to limit the implementation manners and the protection scope of the present invention, right
For those skilled in the art, it should can appreciate that and all replace with being equal made by description of the invention and diagramatic content
It changes and obviously changes obtained scheme, should all be included within the scope of the present invention.
Claims (10)
1. a kind of filtration syringe characterized by comprising
The rear end of syringe, the syringe is provided with piston core pin；
Filter, the filter are set in the syringe, and the filter is located at the front end of the syringe；
Integral type is molded steel needle, and the integral type injection molding steel needle is set to the front end of the syringe.
2. a kind of filtration syringe according to claim 1, which is characterized in that the filter includes lower cover and upper cover；Institute
The upper surface for stating lower cover is equipped with the first groove and first annular groove；First groove is located at the middle part of the lower cover, described
First annular groove is located at the outside of first groove, and one the is formed between the first annular groove and first groove
One annular protrusion；The bottom surface of first groove is inclined-plane, and the left side on the inclined-plane is lower than the right side on the inclined-plane；Described first
The bottom surface of annular groove opens up deflector hole under several lower covers, and deflector hole is penetrated through to the following table of the lower cover under several lower covers
Face；Drainage trough is set in the middle part of the lower surface of the lower cover；The conical surface opens up several radial passages, and each radial direction is logical
The one end in road is connected to deflector hole under the ipsilateral lower cover, and the other end of the same radial passage is mutually passed through with the lower drainage trough
It is logical；The bottom surface of first groove opens up first through hole, and the first through hole is penetrated through to the lower drainage trough；
The upper cover is placed on the lower cover；The upper surface of the upper cover is that the conical surface sets and covers deflector hole, described upper to cover water conservancy diversion
Hole is penetrated through to the lower surface of the upper cover；The upper surface of the upper cover also opens up deflector hole under several upper covers, several upper covers
Lower deflector hole respectively corresponds deflector hole under several lower covers；The lower surface of the upper cover opens up several baffle convex ribs, Ruo Gansuo
Stating baffle convex ribs, around the upper baffle convex ribs for covering deflector hole, and being located at left side to be higher than remaining described baffle convex
Muscle；The lower surface of the upper cover is additionally provided with one second annular protrusion, and second annular protrusion is located at several baffle convex ribs
Outside；The first annular protrusion is embedded between several baffle convex ribs and second annular protrusion；
First filter membrane, first filter membrane are set to the bottom surface of first groove；The baffle convex ribs positioned at left side
Lower end press on first filter membrane upper surface left side；
Second filter membrane, second filter membrane are set to the bottom surface of the first annular groove.
3. a kind of filtration syringe according to claim 2, which is characterized in that the upper cover further include: four extensions, two institutes
Extending part is stated in first straight line, another two extending part is in second straight line, the first straight line and the second straight line phase
Vertical and same plane；One end of each extension is connected to the upper inner wall for covering deflector hole, same institute
The other end for stating extension is provided with arc notch；Four arc notch of four extensions are respectively positioned on the side of same circle
Edge；And the lower end surface of each extension is concordant with the lower surface of the upper cover.
4. a kind of filtration syringe according to claim 2, which is characterized in that the upper cover further include: four strip bulges, four
The strip bulge is respectively arranged at the lower end surface of four extensions.
5. a kind of filtration syringe according to claim 2, which is characterized in that the left side of the outer rim of the lower surface of the upper cover
It is provided with a downward bulge-structure, is provided with a groove structure on the left of the outer rim of the upper surface of the lower cover；The protrusion
Structure is in the groove structure.
6. a kind of filtration syringe according to claim 2, which is characterized in that the lower cover further include: cross structure, it is described
Cross structure is set in the through-hole, and the thickness in the left side of the cross structure is lower than the right side of the cross structure
Thickness；The cross structure is corresponding with four extensions.
7. a kind of filtration syringe according to claim 2, which is characterized in that the integral type injection molding steel needle includes that syringe needle is anti-
Shield, syringe needle and three sections shrink set；The pinhead sleeve portion of the syringe is externally provided with pipe portion, is equipped with internal screw thread in the pipe portion；Institute
The rear end setting external screw thread that three sections shrink set is stated, the external screw thread is matched with the internal screw thread；Three section shrinks the front end of set
It is provided with the syringe needle；The needle shield is placed on the front end that three section shrinks set.
8. a kind of filtration syringe according to claim 7, which is characterized in that it includes that syringe needle clamps that three section, which shrinks set,
Set, first set portion and second set of portion；The rear end of the syringe needle retaining sleeve is provided with external screw thread, the front end folder of the syringe needle retaining sleeve
Hold syringe needle；The outer sheath of the syringe needle retaining sleeve has the first set portion；The rear end in the first set portion is provided with First
The front end in rank portion, the first set portion is equipped with the first inlay card portion；The outer sheath in the first set portion has second set of portion；It is described
The front end in second set of portion is provided with annular baffle, and the rear end in second set of portion is provided with second step portion；Second set of portion
Lateral surface in the middle part of be provided with first caulking groove in boosting portion and annular, the inner wall in second set of portion is provided with the of annular
Two caulking grooves, second caulking groove match with first inlay card portion.
9. a kind of filtration syringe according to claim 8, which is characterized in that the rear end of the inner wall of the needle shield is set
It is equipped with lug boss, the lug boss is matched with first caulking groove.
10. a kind of working method of filtration syringe, which is characterized in that including any one of claim 1 to claim 9
Filtration syringe；The working method includes:
Step 1: first filter membrane is opened up due to negative pressure when taking liquid；The left side of first filter membrane can be by this time
The longest baffle convex ribs to left side compress, and medical fluid can be via first groove and remaining described baffle convex ribs shape
At interstitial flow to first groove in, then flow in syringe via the upper deflector hole of covering, completion takes medicine dynamic
Make；
Step 2: first filter membrane is oppressed due to positive pressure in the inclined seal platform, thus closed when fluid injection
Simultaneously medical fluid and air filtered in liquid storage chamber are excluded to lose in advance；At this point, medical fluid will be by the upper table of the upper cover
Deflector hole under deflector hole, second filter membrane, the lower cover under the conical surface in face, the upper cover, the radial passage are to described
Lower drainage trough, to flow out the syringe；
Step 3: user presses the boosting portion by a hand after having injected medical fluid, meanwhile, another holds institute
State syringe extraction；So that the first set portion and second set of portion that three section shrinks set are backwards to the syringe
Direction slide so that the first set portion and second set of portion cover the syringe needle.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920401052 | 2019-03-27 | ||
| CN2019204010621 | 2019-03-27 | ||
| CN201920401062 | 2019-03-27 | ||
| CN2019204010528 | 2019-03-27 |
Publications (1)
| Publication Number | Publication Date |
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| CN201910477841.4A Pending CN110237367A (en) | 2019-03-27 | 2019-06-03 | A kind of filter and its working method |
| CN201920826418.6U Expired - Fee Related CN211486010U (en) | 2019-03-27 | 2019-06-03 | Filter syringe |
| CN201910478530.XA Pending CN110302450A (en) | 2019-03-27 | 2019-06-03 | A kind of filtration syringe and its working method |
| CN201920825659.9U Expired - Fee Related CN211188585U (en) | 2019-03-27 | 2019-06-03 | Filter |
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| CN201910477841.4A Pending CN110237367A (en) | 2019-03-27 | 2019-06-03 | A kind of filter and its working method |
| CN201920826418.6U Expired - Fee Related CN211486010U (en) | 2019-03-27 | 2019-06-03 | Filter syringe |
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| CN201920825659.9U Expired - Fee Related CN211188585U (en) | 2019-03-27 | 2019-06-03 | Filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112402051A (en) * | 2020-12-01 | 2021-02-26 | 童志超 | Medical anesthetic needle based on life science and technology and use method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110237367A (en) * | 2019-03-27 | 2019-09-17 | 上海振浦医疗设备有限公司 | A kind of filter and its working method |
| CN111991230B (en) * | 2020-08-31 | 2024-04-16 | 石家庄博普信息科技有限公司 | Air filter of dispensing machine |
| CN113350619A (en) * | 2021-07-08 | 2021-09-07 | 上海振浦医疗设备有限公司 | Built-in membrane filtering injector |
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| CN2678665Y (en) * | 2003-11-26 | 2005-02-16 | 吕海洋 | Safety syringe having automatic protecting sleeve |
| CN1788805A (en) * | 2004-12-17 | 2006-06-21 | 黄仲荣 | Needle structure possessing extended protective cover |
| US20160095982A1 (en) * | 2014-10-01 | 2016-04-07 | Vantex Biotechnology Co., Ltd. | Pin head structure of Safety Syringe |
| CN106075660A (en) * | 2016-06-20 | 2016-11-09 | 浙江信纳医疗器械科技有限公司 | Filtration syringe |
| CN106310457A (en) * | 2015-06-23 | 2017-01-11 | 上海振浦医疗设备有限公司 | Disposable precision filter syringe and manufacturing method thereof |
| CN108295340A (en) * | 2018-02-26 | 2018-07-20 | 上海振浦医疗设备有限公司 | A kind of syringe with fine filtering function |
| CN211486010U (en) * | 2019-03-27 | 2020-09-15 | 上海振浦医疗设备有限公司 | Filter syringe |
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| US4317726A (en) * | 1981-02-12 | 1982-03-02 | The United States Of America As Represented By The Secretary Of The Army | Microbial filter assembly |
| ITTO20120575A1 (en) * | 2012-06-27 | 2013-12-28 | Borla Ind | UNIDIRECTIONAL VALVE FOR MEDICAL INFUSION AND SIMILAR LINES |
| CN203315468U (en) * | 2013-05-13 | 2013-12-04 | 周雪 | Auto-disable syringe |
| KR101684487B1 (en) * | 2016-01-07 | 2016-12-08 | 고종원 | Disposable syringe having safety filter function |
| CN206655287U (en) * | 2017-04-10 | 2017-11-21 | 沈杰 | A kind of anti-jamming mechanism for being used to stop that long hair blocks bathroom sewer |
| CN107158523A (en) * | 2017-05-26 | 2017-09-15 | 河南曙光健士医疗器械集团股份有限公司 | A kind of syringe uses decoction macromolecule accurate filter |
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2019
- 2019-06-03 CN CN201910477841.4A patent/CN110237367A/en active Pending
- 2019-06-03 CN CN201920826418.6U patent/CN211486010U/en not_active Expired - Fee Related
- 2019-06-03 CN CN201910478530.XA patent/CN110302450A/en active Pending
- 2019-06-03 CN CN201920825659.9U patent/CN211188585U/en not_active Expired - Fee Related
Patent Citations (7)
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|---|---|---|---|---|
| CN2678665Y (en) * | 2003-11-26 | 2005-02-16 | 吕海洋 | Safety syringe having automatic protecting sleeve |
| CN1788805A (en) * | 2004-12-17 | 2006-06-21 | 黄仲荣 | Needle structure possessing extended protective cover |
| US20160095982A1 (en) * | 2014-10-01 | 2016-04-07 | Vantex Biotechnology Co., Ltd. | Pin head structure of Safety Syringe |
| CN106310457A (en) * | 2015-06-23 | 2017-01-11 | 上海振浦医疗设备有限公司 | Disposable precision filter syringe and manufacturing method thereof |
| CN106075660A (en) * | 2016-06-20 | 2016-11-09 | 浙江信纳医疗器械科技有限公司 | Filtration syringe |
| CN108295340A (en) * | 2018-02-26 | 2018-07-20 | 上海振浦医疗设备有限公司 | A kind of syringe with fine filtering function |
| CN211486010U (en) * | 2019-03-27 | 2020-09-15 | 上海振浦医疗设备有限公司 | Filter syringe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112402051A (en) * | 2020-12-01 | 2021-02-26 | 童志超 | Medical anesthetic needle based on life science and technology and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110237367A (en) | 2019-09-17 |
| CN211486010U (en) | 2020-09-15 |
| CN211188585U (en) | 2020-08-07 |
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