CN205494402U - Syringe filters syringe needle - Google Patents
Syringe filters syringe needle Download PDFInfo
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- CN205494402U CN205494402U CN201620256519.0U CN201620256519U CN205494402U CN 205494402 U CN205494402 U CN 205494402U CN 201620256519 U CN201620256519 U CN 201620256519U CN 205494402 U CN205494402 U CN 205494402U
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- Prior art keywords
- needle tubing
- seat
- syringe
- needle
- injection tube
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- 239000007788 liquid Substances 0.000 claims abstract description 112
- 238000002347 injection Methods 0.000 claims abstract description 62
- 239000007924 injection Substances 0.000 claims abstract description 62
- 238000001914 filtration Methods 0.000 claims abstract description 51
- 239000012528 membrane Substances 0.000 claims abstract description 36
- 239000003814 drug Substances 0.000 claims abstract description 35
- 238000004891 communication Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract 4
- 239000012535 impurity Substances 0.000 description 10
- 238000001802 infusion Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000011521 glass Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000008155 medical solution Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000007918 intramuscular administration Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a syringe filters syringe needle, including needle tubing, needle tubing fixing base, connecting seat to and set up the filter equipment who is connected the intracavity who forms at needle tubing fixing base and connecting seat, its characterized in that filter equipment constitute by filter layer and the elastic support body, and the connection chamber of needle tubing fixing base is round platform shape cavity, the one end that round platform shape cavity is close to the needle tubing is the tip, the diameter of filter layer is less than the main aspects diameter of round platform shape cavity and is greater than tip diameter and needle tubing diameter, its filter layer comprises with the one -way valve membrane of elasticity separation blade and the liquid medicine filtration membrane that sets up at separation blade both sides face, liquid medicine filtration membrane sets up a side that is close to the injection tube in the separation blade, another side and middle opening that one -way valve membrane hugs closely the separation blade have many disconnection lines. The utility model discloses played substantive filter effects to the liquid medicine, effectively avoided because of the medical malpractice that the liquid medicine did not cause only, its simple structure, low in production cost, convenient to use, suitable medical institutions promote on a large scale.
Description
Technical field
This utility model relates to area of medical devices, a kind of syringe needle that can filter completely.
Background technology
Syringe (being called for short " needle tubing ") is injected and infused is conventional common therapy and means.Needle tubing injection be from medicinal liquid bottle, extract medicinal liquid with needle tubing after the most directly insert the needle in human body intramuscular tissue or blood vessel after again liquid medicine injection is injected in human body.Transfusion be then various medicinal liquids and medicated powder are mixed after put into infusion bottle formed larger amount of admixing medical solutions, recycling needle tubing slowly inputs in human body.Before infusing, often need to prepare specific admixing medical solutions, and prepare admixing medical solutions and typically complete with syringe, concrete operational approach is to insert syringe to extract medicinal liquid before appropriate preparation in medicinal liquid bottle, again injecting liquid drug is entered in powdered medicine bottle after extracting syringe, shake up, after medicinal liquid and medicated powder fully dissolve, flow into therewith in human body in extracting mixed liquor injection infusion bottle out.
When carrying out needle tubing injection, medicinal liquid there may exist impurity, or the chopped glass produced when knocking the vial of powder charge liquid open or other chips；And during infusing again after being mixed with medicated powder by medicinal liquid, admixing medical solutions is also possible to there is the powdered substance formed because medicated powder is the most sufficiently dissolved.If these impurity, chopped glass, powdered substance, or other chips are injected in human body with medicinal liquid, then can cause the sense of discomfort of patient, even harmful to human life time serious, cause medical safety accident.In order to prevent the generation of above-mentioned situation, people are provided with liquid medicine filtering membrane 11 on the liquid medicine flow pipeline of syringe needle, the impurity in medicinal liquid, chopped glass, powdered substance etc. are filtered out (as shown in Figure 1 with this, patent name: a kind of medicine dissolving device, the patent No.: 201510451141X), when suction medicinal liquid in injection tube, liquid medicine filtering membrane plays filtration, the impurity in medicinal liquid, chopped glass, powdered substance etc. is filtered and sticks to the one side (upper side of accompanying drawing 1 herb liquid filter membrane) of close needle tubing 1 on liquid medicine filtering membrane.This kind of liquid medicine filtering membrane seems useful, but in syringe needle inserts human body, carry out needle tubing direct injection, or syringe needle insert push in infusion bottle in infusion bottle medicinal liquid when infusing (in accompanying drawing 1 direction shown in arrow be medicinal liquid from injection tube pushed enter infusion bottle time flow direction), by medical filtration membrane filtration the impurity of staying filter membrane upper side, chopped glass, powdered substances etc. can be injected in human body with liquid medicine flow again, or pushed enter in infusion bottle and be injected into therewith in human body, do not play real filtration, medical security risks still exists.
Utility model content
This utility model is to provide one to be provided with defecator on liquid medicine flow pipeline, can realize the real syringe needle filtered to medicinal liquid, to solve the shortcoming in the presence of background technology and deficiency.
This utility model is solved the technical problem that and is realized by the following technical solutions:
nullA kind of syringe filtering syringe needle，Needle tubing including most advanced and sophisticated sidewall band pod apertures，Seat is fixed in order to the T-shaped needle tubing of fixing needle tubing，The connection seat that seat is fixed at two ends respectively with needle tubing and injection tube is connected，And it is arranged on the defecator connecting intracavity that needle tubing is fixed seat and is connected seat and formed，The arbitrary cross section that needle tubing fixes seat and connection seat is rounded，It is characterized in that，Described defecator is by circular filter course，And it is arranged on filter course the elastic support composition near injection tube one side，And needle tubing to fix the connection chamber of seat be truncated cone-shaped cavity，Truncated cone-shaped cavity is small end near one end of needle tubing，The diameter of filter course is less than the outside diameter of truncated cone-shaped cavity and more than end diameter and needle tubing diameter，Described filter course is by with pertusate rounded tabs and be separately positioned on the liquid medicine filtering membrane of catch two sides and constitute with elastic one-way valve film，Its liquid medicine filtering membrane is arranged at the catch one side near injection tube，Its check valve film is close to the another side of catch and centre has a plurality of striping.
For this utility model, described elastic support is multiple independent elastic components, or is formed to the extension of injection tube direction from filter course circumference by check valve film.
For this utility model, it connects the connection intracavity of seat, is provided with multiple support column in order to support elastic support.
For this utility model, described connection seat and needle tubing are fixed the groove clamping that is connected by of seat and are socketed.
For this utility model, described needle tubing is fixed the needle tubing end of seat and is additionally provided with an air filter, air filter, needle tubing fix seat, connection seat three links into an integrated entity, the shell that described air filter is fixed seat by air-filtering membrane and parcel needle tubing and needle tubing forms, shell and needle tubing and needle tubing are fixed and are left gap between seat thus form air communication channel, air-filtering membrane is arranged in this air communication channel, and shell also has the air-vent of connection extraneous air and air communication channel.
For this utility model, air filter connects with the groove clamping that is connected by being connected seat, and needle tubing fixes the junction that seat is fixed on air filter and is connected seat.
For this utility model, it is that coaxial line is installed that described filter course and needle tubing fix the truncated cone-shaped cavity of seat.
For this utility model, the circumferential edge of its filter course contacts along the truncated cone-shaped cavity wall fixing seat with needle tubing to be close to.
For this utility model, in described check valve film, the quantity of striping is three or more than three.
For this utility model, described needle tubing is fixed and is provided with in order to the movement of filter course is carried out spacing limited post in the cavity wall in seat connection chamber.
Operation principle: when suction medicinal liquid in syringe, the mobilization force of atmospheric pressure and medicinal liquid acts on the check valve film side of filter course, check valve film Guan Bi and filter course is made to translate to injection tube direction, so that filter course circumferential edge edge is no longer adjacent to needle tubing and fixes the truncated cone-shaped cavity wall of seat, opening the flow channel of medicinal liquid, medicinal liquid is connected intracavity from filter course circumferential edge along with flowing into the space of truncated cone-shaped cavity wall and enters injection tube；Stopping in injection tube after suction medicinal liquid, filter course answers initial condition next time in the elastic force effect of elastic support---and the circumferential edge of filter course is along being close to truncated cone-shaped cavity wall, and gap therebetween is closed；When medicinal liquid is released to needle tubing direction in injection tube, medicinal liquid acts on filter course, make filter course tightr with the laminating of truncated cone-shaped cavity wall, simultaneously, medicinal liquid passes through liquid medicine filtering membrane and catch, by the thrust of injection tube push-pull bar that is subject in check valve film, make have resilient check valve film to be open along the position having striping to needle tubing direction, " breach " flowed out by being allowed medicinal liquid is formed in striping position, in the process, medicinal liquid flows out through liquid medicine filtering membrane, the impurity etc. that medicinal liquid is filtered and will filter out by liquid medicine filtering membrane is trapped in the liquid medicine filtering membrane one side near injection tube, no longer enter in human body with medicinal liquid, medicinal liquid is served real filtration, effectively prevent the therefore generation of the malpractice caused.
Beneficial effect: the medicinal liquid flowed out in injection tube is filtered by this utility model by the defecator after innovation, and the impurity that will filter out is trapped in syringe, will not flow in human body with medicinal liquid again, medicinal liquid is served substantial filtration, effectively prevent the generation of the malpractice caused because medicinal liquid is not clean；This utility model simple in construction, production cost is low, easy to use, is suitable for medical institutions and promotes on a large scale.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art；
Fig. 2 is structural representation of the present utility model (without air filter)；
Fig. 3 is structural representation of the present utility model (being provided with air filter)；
Fig. 4 is the structural representation of check valve film；
Fig. 5 is the structural representation of catch；
Fig. 6 is that check valve film is opened along striping when being subject to the medicinal liquid active force flowing to needle tubing from injection tube
After schematic front view；
Fig. 7 is the schematic top plan view of Fig. 6；
Fig. 8 is the sectional view that needle tubing fixes seat；
Fig. 9 is the upward view that needle tubing fixes seat；
Figure 10 is the sectional view connecting seat；
Figure 11 is the top view connecting seat；
Figure 12 is the schematic enlarged-scale view of filter course.
In figure: 1--needle tubing, 2--pod apertures, 3--needle tubing fixes seat, 4--injection tube, 5--connects seat, 6--connects chamber, 7--elastic support, 8--truncated cone-shaped cavity, 9--hole, 10--catch, 11--liquid medicine filtering membrane, 12--check valve film, 13--striping, 14--support column, 15--air-filtering membrane, 16--shell, 17--air communication channel, 18--air-vent, 19--injection tube push-pull bar, 20--separating belt, 21--limited post, 22--groove, 23--flange collar, 24--filter course, R is the diameter of filter course, R1, R2 is respectively outside diameter and the end diameter of truncated cone-shaped cavity.
Detailed description of the invention
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described in detail as follows:
nullSee shown in accompanying drawing 2-12，A kind of syringe filtering syringe needle，Needle tubing 1(pod apertures including most advanced and sophisticated sidewall band pod apertures 2 is arranged at the sidewall of needle tubing，It is more conducive in needle tubing inserts human muscle or in medicinal liquid bottle，Effectively prevent blocking)，Seat 3 is fixed in order to the T-shaped needle tubing of fixing needle tubing，The connection seat 5 that seat is fixed at two ends respectively with needle tubing and injection tube 4 is connected，And it is arranged on the defecator connected in chamber 6 that needle tubing is fixed seat and is connected seat and formed，The arbitrary cross section that needle tubing fixes seat and connection seat is rounded，It is characterized in that: described defecator is by circular filter course 24，And the elastic support 7 being arranged on filter course close injection tube one side constitutes (such as accompanying drawing 12 institute not)，And needle tubing to fix the connection chamber of seat be the truncated cone-shaped cavity 8 (circular cavity that i.e. the big other end in one end is little，During the from one end to the other side transition of truncated cone-shaped cavity wall，It can be camber line、Article one, the skew lines of skew lines or several different angles is in smoothing junction，Such as accompanying drawing 8、Shown in 9)，Filter course and truncated cone-shaped cavity are that coaxial line is installed and the circumferential edge of filter course is close to along contacting with truncated cone-shaped cavity wall，Truncated cone-shaped cavity connects with needle tubing，Truncated cone-shaped cavity is small end near one end of needle tubing，The diameter R of filter course is less than the outside diameter R1 of truncated cone-shaped cavity and more than end diameter R2(R2 < R < R1) and needle tubing diameter，Described filter course is by rounded tabs 10 and is separately positioned on the liquid medicine filtering membrane 11 of catch two sides and constitutes with elastic one-way valve film 12，Liquid medicine filtering membrane is arranged on the catch one side near injection tube，Check valve film is arranged on the another side of catch and is close to catch，Have a plurality of striping 13(striping in check valve film and dissipate extension disconnection from the centre position of check valve film to periphery four，But and do not extend fully to peripheral edge edge，Peripheral edge is along still in the entirety not disconnected)，Check valve film is when the acting on of liquid medicine flow thrust by flowing to needle tubing from injection tube direction，Film between adjacent two stripings can bend to needle tubing direction，Thus formed in striping position and medicinal liquid can be allowed to flow to " breach " of needle tubing (such as accompanying drawing 6、Shown in 7.In accompanying drawing 6, upturned portion is the part of stress bending；" ten " font in the middle of in accompanying drawing 7 is " breach " formed), multiple hole 9 is had on catch, the density of hole to be suitable for size, make check valve film when being subject to the medicinal liquid effect flowing to injection tube from needle tubing, check valve film because without edge disconnection alignment injection tube direction back-flexing and being formed breach by the prevention of catch, thus can stop the medicinal liquid flowing to injection tube to flow into from these reverse breach.
In the present embodiment, catch is by horizontal and two separating belts 20 of vertical, catch is divided into four equal portions hole 9(as shown in Figure 5), two horizontal and vertical stripings (as shown in Figure 4) corresponding with separating belt are then opened in check valve film, during installing, corresponding separating belt is answered in the position of striping, and the width of separating belt to be suitable for, when check valve film is subject to the medicinal liquid active force flowing to injection tube from needle tubing, separating belt is wanted to support check valve film, and check valve film will not be made reversely to open to injection tube direction along striping.During being embodied as, multiple small holes can be opened on catch, and the striping in check valve film can also be split into three, four or more a plurality of, the bar number opened is the most, the area of the check valve film between the most every two adjacent two stripings is the least, when by flowing to the medicinal liquid active force of needle tubing from injection tube, then check valve film is the most flexible along striping direction and open.When producing check valve film, it should be noted that some: 1, check valve film uses elastomeric material to make, its thickness is suitable with elastic palpus, both can guarantee that check valve film was not by External Force Acting time, the each several part being disconnected line segmentation can be replied smooth under the effect of elastic force and be close to catch, guarantee feather valve film is when being subject to the medicinal liquid active force flowing to needle tubing from injection tube again, and each several part being disconnected line segmentation can relatively be easier to stress bending and open formation breach；2, not by External Force Acting time, striping position must be in the fully closed condition that liquid cannot be allowed to flow through, that is, although striping position is disconnected, but the gap of gap must be minimum even close to zero, available very thin blade or other gapless technical processs open this striping, prevent when sucking medicinal liquid in injection tube, medicinal liquid can flow through filter membrane at striping and enter in injection tube, if this occurs, contaminant filter can be sticked to the filter membrane one side near needle tubing by the filtration of filter membrane by the medicinal liquid then entering injection tube at striping, when releasing medicinal liquid to needle tubing in injection tube, these impurity the most likely flow in human body with medicinal liquid；3, the striping in check valve film must be smooth, and gap can not be jagged, and when preventing medicinal liquid from flowing out, check valve film stress but can not be opened along striping bending.
During being embodied as this utility model, described elastic support can be designed to multiple the most multiple spring of independent elastic component (as shown in left structure in accompanying drawing 12), or being extended after filter course circumference bends to injection tube direction at the edge of check valve film forms (as shown in right structure accompanying drawing 12, can all extend or the part extension of discontinuity by a circle during extension, when part extends, extension should be corresponding with support column position), during extending, should ensure that the highly consistent of extension；Connecting the connection intracavity of seat, be provided with multiple support column 14(in order to support elastic support as shown in accompanying drawing 10,11)；The cavity wall that needle tubing fixes seat connection chamber is provided with in order to the movement of filter course is carried out spacing limited post 21(as Figure 8,9), filter course is provided with between limited post, limited post can be effectively ensured filter course when being moved by External Force Acting, will not deviate to the left and right sides, it is ensured that liquid medicine flow unimpeded.Connection seat and needle tubing are fixed the groove clamping that is connected by of seat and are socketed: needle tubing is fixed the junction periphery of seat and is circumferentially provided with a circle groove 22, the inner headed face connecting seat junction is circumferentially provided with flange collar corresponding to a circle 23, when the two connects, the connection end that needle tubing is fixed seat inserts in connection seat, and crowded pushing away of exerting oneself, make flange collar snap in groove, fashionable at card, access section can be equipped with glue, connects more firm after the glue solidifies.
When extracting medicinal liquid from medicinal liquid bottle, medicinal liquid bottle can be formed negative pressure (air pressure in the medicinal liquid bottle i.e. sealed is less than external pressure), thus increase the difficulty that injection tube push-pull bar pulls out.For convenience of operation, reduce operation easier, the outside of seat can be fixed at the needle tubing of this utility model and arrange one for cross-ventilated circulation passage, and in the circulation passage of air, arrange one form air filter in order to purify the air-filtering membrane of air, air filter, needle tubing fixes seat, connect seat three to link into an integrated entity, the shell 16 that air filter is fixed seat by air-filtering membrane 15 and parcel needle tubing and needle tubing forms, shell and needle tubing and needle tubing are fixed and are left gap between seat thus form air communication channel 17, the air-vent 18 of connection extraneous air and air communication channel is had on shell.For simplifying air filter, needle tubing fixes seat, connect the connection of seat three, air filter uses groove clamping be socketed and be equipped with glue as the connection connecting seat, and needle tubing fixes the junction (as shown in Figure 3) that seat is fixed on air filter and is connected seat: the junction cylindrical at air filter shell arranges a circle groove, the flange collar of correspondence is set at the inner headed face connecting seat junction, simultaneously, at the inner headed face connecting seat junction, chuck is set, after connection seat card is set on air filter shell, the gap of certain distance is there is between seat inner headed face chuck in the end face of air filter shell with being connected, and the periphery that needle tubing fixes seat wall no longer arranges groove, one supporting with gap is set in junction and encloses bossing, during this circle bossing just blocks in this gap.When manufacturing, should fully ensure that the distance in gap and needle tubing fix the tolerance fit between seat wall thickness, it is ensured that needle tubing is fixed after seat wall snaps in gap and do not had the compactest or loosening phenomenon.When extracting medicinal liquid from medicinal liquid bottle, air filter can connect in medicinal liquid bottle and extraneous air, prevents the generation of negative pressure.
Concrete operations of the present utility model and work process:
When 1, using, this utility model is connected on injection tube by connecting cover for seat.Under this original state, the surrounding of filter course is along being close to truncated cone-shaped cavity wall, and check valve film is disconnected each several part that line is divided into and is all close to catch under the effect of its elastic-restoring force, and striping position is closure state.
2, from medicinal liquid bottle, extract medicinal liquid enter the process in injection tube: the push-pull bar 19 of injection tube is pushed into the one end near needle tubing, after needle tubing is inserted in medicinal liquid bottle, it is pulled outwardly push-pull bar, negative pressure can be formed in injection tube, the medicinal liquid in medicinal liquid bottle is made to enter needle tubing through pod apertures, and arrive in needle tubing fixes the truncated cone-shaped cavity of seat and contact with the check valve film of filter course, filter course is under the active force of negative pressure and liquid medicine flow, it is pushed to move (elastic support is compressed) near the direction of injection tube one end, simultaneously, the surrounding of filter course is along leaving truncated cone-shaped cavity wall and forming a circle space, the connection intracavity that medicinal liquid flows to connect seat through this space again enters back in injection tube.In the process, check valve film is disconnected each several part that line is divided into and is all close to catch, striping position is that closure state is (although check valve film is by External Force Acting, but catch is pointed in the direction of power and check valve film is close to catch, because being hindered by catch, check valve film cannot be along disconnecting the bending of alignment catch direction, formation breach will not be opened) at striping, medicinal liquid cannot flow into from striping position and connect intracavity, it is only capable of flowing into from the space between edge, filter course surrounding and truncated cone-shaped cavity wall, now, liquid medicine filtering membrane does not play filtration, various impurity in medicinal liquid flow to injection tube with medicinal liquid.
3, in medicinal liquid fully enters injection tube, after stopping pulls out the push-pull bar of injection tube, medicinal liquid stops flowing, negative pressure is the most no longer had in injection tube, acting on external force on filter course to disappear, filter course, under the elastic force effect of elastic support, pushed returns back to original state, the surrounding of filter course is along being close to truncated cone-shaped cavity wall, and medicinal liquid is sealed in injection tube.
4, what medicinal liquid was pushed outwardly in injection tube process: when needing to carry out injecting or being injected infusion bottle by the medicinal liquid in injection tube, injection tube push-pull bar is promoted to needle tubing direction, medicinal liquid stress in injection tube flows to needle tubing direction, and sequentially pass through liquid medicine filtering membrane and the hole on catch, arrive at check valve film, and by the thrust of injection tube push-pull bar that is subject in check valve film, check valve film is disconnected each several part stress that line is divided into and to needle tubing direction bend open, form breach, medicinal liquid flows out and in needle tubing flows into human body or in infusion bottle from this breach.In the process, filter course is made its edge be close to truncated cone-shaped cavity wall by liquid medicine flow power and the elastic force of elastic support, medicinal liquid is only capable of the breach in liquid medicine filtering membrane, catch hole, check valve sheet and flows out, during this of medicinal liquid outflow, liquid medicine filtering membrane plays its filtration, the various contaminant filters of injection tube will be flow to and stick to the liquid medicine filtering membrane side near injection tube, and will not flow out with medicinal liquid and be injected in human body.
Relative to existing technology, the medicinal liquid flowed out in injection tube is filtered by this utility model by the defecator after innovation, and the impurity that will filter out is trapped in syringe, will not flow in human body with medicinal liquid again, medicinal liquid is served substantial filtration, effectively prevent the generation of the malpractice caused because medicinal liquid is not clean, and, this utility model simple in construction, production cost is low, easy to use, it is suitable for medical institutions and promotes on a large scale, it is most likely that become the substitute of existing syringe needle.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; on the premise of without departing from this utility model spirit and scope, this utility model also has various changes and modifications, and these changes and improvements both fall within claimed scope.The protection domain that this utility model requires is defined by appending claims and equivalent thereof.
Claims (10)
- null1. a syringe filtering syringe needle，Needle tubing including most advanced and sophisticated sidewall band pod apertures，Seat is fixed in order to the T-shaped needle tubing of fixing needle tubing，The connection seat that seat is fixed at two ends respectively with needle tubing and injection tube is connected，And it is arranged on the defecator connecting intracavity that needle tubing is fixed seat and is connected seat and formed，The arbitrary cross section that needle tubing fixes seat and connection seat is rounded，It is characterized in that: described defecator is by circular filter course，And it is arranged on filter course the elastic support composition near injection tube one side，And needle tubing to fix the connection chamber of seat be truncated cone-shaped cavity，Truncated cone-shaped cavity is small end near one end of needle tubing，The diameter of filter course is less than the outside diameter of truncated cone-shaped cavity and more than end diameter and needle tubing diameter，Described filter course is by with pertusate rounded tabs and be separately positioned on the liquid medicine filtering membrane of catch two sides and constitute with elastic one-way valve film，Its liquid medicine filtering membrane is arranged at the catch one side near injection tube，Its check valve film is close to the another side of catch and centre has a plurality of striping.
- A kind of syringe filtering syringe needle the most according to claim 1, it is characterised in that described elastic support is multiple independent elastic components, or formed to the extension of injection tube direction from filter course circumference by check valve film.
- A kind of syringe filtering syringe needle the most according to claim 1, it is characterised in that it connects the connection intracavity of seat, is provided with multiple support column in order to support elastic support.
- A kind of syringe filtering syringe needle the most according to claim 1, it is characterised in that described connection seat and needle tubing are fixed the groove clamping that is connected by of seat and be socketed.
- A kind of syringe filtering syringe needle the most according to claim 1, it is characterised in that it is that coaxial line is installed that described filter course and needle tubing fix the truncated cone-shaped cavity of seat.
- A kind of syringe filtering syringe needle the most according to claim 1, it is characterised in that the circumferential edge of described filter course contacts along the truncated cone-shaped cavity wall fixing seat with needle tubing to be close to.
- A kind of syringe filtering syringe needle the most according to claim 1, it is characterised in that in described check valve film, the quantity of striping is three or more than three.
- A kind of syringe filtering syringe needle the most according to claim 1, it is characterised in that described needle tubing is fixed and is provided with in order to the movement of filter course is carried out spacing limited post in the cavity wall in seat connection chamber.
- A kind of syringe filtering syringe needle the most according to claim 1, it is characterized in that, described needle tubing is fixed the needle tubing end of seat and is additionally provided with an air filter, air filter, needle tubing fix seat, connection seat three links into an integrated entity, the shell that described air filter is fixed seat by air-filtering membrane and parcel needle tubing and needle tubing forms, shell and needle tubing and needle tubing are fixed and are left gap between seat thus form air communication channel, air-filtering membrane is arranged in this air communication channel, and shell also has the air-vent of connection extraneous air and air communication channel.
- A kind of syringe filtering syringe needle the most according to claim 9, it is characterised in that air filter connects with the groove clamping that is connected by being connected seat, and needle tubing fixes the junction that seat is fixed on air filter and is connected seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620256519.0U CN205494402U (en) | 2016-03-30 | 2016-03-30 | Syringe filters syringe needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620256519.0U CN205494402U (en) | 2016-03-30 | 2016-03-30 | Syringe filters syringe needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205494402U true CN205494402U (en) | 2016-08-24 |
Family
ID=56734127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620256519.0U Expired - Fee Related CN205494402U (en) | 2016-03-30 | 2016-03-30 | Syringe filters syringe needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205494402U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105708693A (en) * | 2016-03-30 | 2016-06-29 | 王高松 | Filter needle for injector |
| 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 |
-
2016
- 2016-03-30 CN CN201620256519.0U patent/CN205494402U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105708693A (en) * | 2016-03-30 | 2016-06-29 | 王高松 | Filter needle for injector |
| 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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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 |