CN106362263A - Introducing needle protective device used for catheter assembly, catheter assembly and indwelling needle - Google Patents
Introducing needle protective device used for catheter assembly, catheter assembly and indwelling needle Download PDFInfo
- Publication number
- CN106362263A CN106362263A CN201610767797.7A CN201610767797A CN106362263A CN 106362263 A CN106362263 A CN 106362263A CN 201610767797 A CN201610767797 A CN 201610767797A CN 106362263 A CN106362263 A CN 106362263A
- Authority
- CN
- China
- Prior art keywords
- introducing
- pin
- holding part
- conduit
- tube component
- 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.)
- Pending
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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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/09—Guide wires
-
- 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
- A61M25/00—Catheters; Hollow probes
-
- 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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Biophysics (AREA)
- Vascular Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an introducing needle protective device used for a catheter assembly, the catheter assembly and an indwelling needle, wherein the catheter assembly is provided with an introducing needle, a catheter and a catheter base, the catheter is positioned at the far end of the catheter base, the introducing needle is inserted in/pulled out of the catheter and the catheter base, the introducing needle protective device comprises a protective cover and a clamping piece, the protective cover is detachably matched with the inner surface of the catheter base, and an accommodating cavity is formed inside the protective cover; the clamping piece is positioned in the accommodating cavity, the far end of the introducing needle is provided with a sharp end, a blood return groove is formed in the introducing needle, and after the introducing needle is pulled out, the clamping piece is limited in the blood return groove, so that the sharp end is always positioned in the protective cover. According to the introducing needle protective device, the catheter assembly and the indwelling needle, through the match between the clamping piece and the blood return groove, the limiting for the sharp end of the introducing needle is realized, in addition, the structure is simple, and the sharp end of the introducing needle is stably kept in the protective cover.
Description
Technical field
The present invention relates to medical field, more particularly, to a kind of introducing needle protection for conduit tube component, conduit tube component
And remaining needle.
Background technology
Catheter in blood vessel is used for inputting in the patient, by fluid fluid from exiting in the patient or be used for monitoring
The various parameters of patient vessel's system.Typically, introduced the catheter in patient vessel with introducing pin.Conduit is installed in point
On the introducing pin of sharp distal tip, at least distal portions of conduit are tightly jointed the outer surface introducing pin to be introduced into pin
The stripping of conduit is stoped during insertion blood vessel.
Clinicist is introduced into pin by patient skin and is inserted in patient vessel.Once observing blood back, just by conduit
Fully-inserted Ink vessel transfusing, is then introduced into pin and exits from conduit, and conduit is secured in place.Once introducing pin from leading
Exit in pipe, introduce pin and just include " tip being contaminated by blood stains " and must be appropriately processed.
Recent years, the accidental needle sticks wound that the tip being contaminated by blood stains causes particularly is paid close attention to.Although aware of the need to close
Process the tip being contaminated by blood stains suitablely, but, the contaminated phenomenon introducing pin accidental puncture still occurs, such as in urgent feelings
Under condition, or cause to introduce pricking wound phenomenon due to not noting or ignoring.
In order to solve the above problems, have been proposed for various needle tip shields at present.Unexpected by pin except avoiding clinicist
Stab outer, needle tip shield also makes the phenomenon exposing blood in catheterization procedure minimize.
But, the structure of current needle tip shield is more complicated, and existence and stability problem.
Content of the invention
It is an object of the invention to provide a kind of introducing needle protection of conduit tube component, conduit tube component and remaining needle, its
Structure is simple, and can be introduced into needle tip and be stably held in guard shield.
For achieving the above object, an embodiment of the present invention provides a kind of protection dress of the introducing pin for conduit tube component
Put, described conduit tube component has introducing pin, conduit and catheter block, described conduit is located at the far-end of described catheter block, described introducing
Pin inserts/extracts described conduit and described catheter block, and described introducing needle protection includes:
Guard shield, it is removably coordinated with the inner surface of described catheter block, and described guard shield is internally formed an accommodating chamber；
Holding part, it is located at described receiving intracavity；
Wherein, the described far-end introducing pin has tip, and has blood back groove on described introducing pin, when described introducing pin pulls out
When going out to complete, described holding part is limited in described blood back groove so that described tip remains in described guard shield.
As the improvement further of an embodiment of the present invention, described holding part includes at least one claw, described claw tool
Flexible, when described blood back groove reaches at described holding part, the distal end of described claw move towards described blood back groove and
It is limited in described blood back groove.
As the improvement further of an embodiment of the present invention, described holding part also includes base, and described holding part includes
It is distributed in some claws of described base far-end.
As the improvement further of an embodiment of the present invention, described base has pass through aperture, the far-end of some claws
End is enclosed and is set as an opening, and described introducing pin passes through described through hole and described opening to cooperate with described holding part.
As the improvement further of an embodiment of the present invention, when described holding part is located at described receiving intracavity, described
The line direction at the center of through hole and the center of described opening with described introduce pin to extract direction consistent.
As the improvement further of an embodiment of the present invention, the outline of described base is rounded, some dog rings around
The periphery setting of described base.
As the improvement further of an embodiment of the present invention, described accommodating chamber is cylindrical, the internal diameter of described accommodating chamber
Equal with the external diameter of described base.
As the improvement further of an embodiment of the present invention, extract on direction in described introducing pin, described accommodating chamber tool
There is the first length, described holding part has the second length, described first length is more than described second length.
For achieving the above object, an embodiment of the present invention provide a kind of conduit tube component, include introducing pin, conduit,
Catheter block and as above the introducing needle protection described in any one technical scheme, described conduit is located at the remote of described catheter block
End, described introducing pin inserts/extracts described conduit and described catheter block, and described introducing needle protection is removable with described catheter block
The cooperation unloaded.
For achieving the above object, an embodiment of the present invention provides a kind of remaining needle, including conduit as above
Assembly.
Compared with prior art, the beneficial effects of the present invention is: an embodiment of the present invention pass through holding part and blood back
The cooperation of groove is realized introducing the spacing of needle tip, and structure is simple, and can be introduced into needle tip and be stably held in guard shield.
Brief description
Fig. 1 is the containing needle structure schematic diagram of an embodiment of the present invention；
Fig. 2 is the introducing pin insert state schematic diagram of an embodiment of the present invention；
Fig. 3 is the introducing pin of an embodiment of the present invention, guard shield, holding part explosive view；
Fig. 4 is that view extracted by the introducing pin of an embodiment of the present invention；
Fig. 5 is the introducing needle protection schematic diagram of an embodiment of the present invention；
Fig. 6 is the holding part schematic diagram of an embodiment of the present invention；
Fig. 7 is the holding part explosive view of an embodiment of the present invention.
Specific embodiment
Describe the present invention below with reference to specific embodiment shown in the drawings.But these embodiments are simultaneously
Do not limit the present invention, structure that those of ordinary skill in the art is made, method or functionally according to these embodiments
Conversion is all contained in protection scope of the present invention.
In the present invention, the word in described expression position and direction, is all using exercises on apparatus author as reference, near operation
One end of person is near-end, and the one end away from operator is far-end.
As shown in figure 1, the remaining needle 100 of an embodiment of the present invention includes malleation connector 10, conduit tube component 20 and connects
Logical malleation connector 10 and the pipeline 30 of conduit tube component 20.
Described malleation connector 10 is a kind of infusion connector of needleless sealing, and medicinal liquid is injected by malleation connector 10, and
Pass through afterwards in pipeline 30 inflow catheter assembly 20.
Conduit tube component 20 includes introducing pin 21, conduit (sign), catheter block 22 and cover body 23.
Catheter block 22 is hollow structure, and it is with pipeline 30 mutual conduction.
Conduit is located at the far-end of described catheter block 22, and conduit is tightly connected with catheter block 22, when introducing pin 21 insertion,
Conduit is located at the outside introducing pin 21.
Introduce pin 21 and insert/extract described conduit and described catheter block 22, as shown in figure 1, introducing pin 21 to be in insertion shape
State, introduces the far-end that pin 21 protrudes out catheter block 22.
The described far-end introducing pin 21 has and has blood back groove 212 on most advanced and sophisticated 211, and described introducing pin 21.
Blood back groove 212 is substantially the cell body that conducting introduces pin 21 passage, and blood back groove 212 extracts direction x along introducing pin 21
Extend.
The near-end introducing pin 21 is also associated with assisting plug portion 24, and described auxiliary plug portion 24 is near with described catheter block 22
End is flexibly connected, and assists plug portion 24 to drive described introducing pin 21 to carry out inserting/extract operation.
Cover body 23 is used for protection and introduces pin 21 and conduit, and when remaining needle 100 does not use, cover body 23 is set in introducing pin 21
Conduit outside, and cover body 23 cooperated with catheter block 22, when remaining needle 100 need to use, pulls up cover body 23 and exposes
Introduce pin 21 and conduit.
In the present embodiment, in conjunction with Fig. 2 to Fig. 4, described conduit tube component 20 also includes introducing needle protection 25.
Described introducing needle protection 25 includes guard shield 26 and holding part 27.
Guard shield 26 is removably coordinated with the inner surface of described catheter block 22, and described guard shield 26 is internally formed an accommodating chamber
261.
Holding part 27 is located in described accommodating chamber 261.
When described introducing pin 21 extract complete when, in conjunction with Fig. 4, described holding part 27 be limited in described introduce pin 21 blood back
Introducing pin 21 tip 211 is made to remain in described guard shield 26 in groove 212.
Here, introduce pin 21 and extract and complete to refer to introduce that pin 21 shield vis 26 are proximally facing moves to extreme position, bag
Include guard shield 26 to be still located in catheter block 22 and guard shield 26, introduce pin 21 and holding part 27 departs from the state of catheter block 22.
The blood back groove 212 of present embodiment not only act as blood back effect it is often more important that, by holding part 27 and blood back groove
212 cooperation can be realized introducing the spacing of pin 21 tip 211.
Present embodiment structure is simple, and holding part 27 stable cooperation with blood back groove 212, can be introduced into pin 21 tip 211
It is stably held in guard shield 26, it is to avoid the tip 211 being contaminated by blood stains is exposed.
It should be noted that ginseng Fig. 3 and Fig. 4, between blood back groove 212 and the outer surface introducing pin 21, it is formed with stage portion
213, when holding part 27 is located in blood back groove 212, due to the restriction effect of stage portion 213, the range of movement of holding part 27 is real
Matter is between blood back groove 212 near-end and two stage portion 213 of far-end.
So, no matter introduce pin 21 and be subject to the proximally facing active force being also directed towards far-end, holding part 27 cannot take off all the time
From blood back groove 212, and holding part 27 is all the time in accommodating chamber 261, and the position introducing the tip 211 of pin 21 is limited, can be effective
The tip 211 introducing pin 21 is avoided to protrude out the far-end of guard shield 26 or whole introducing pin 21 disengaging guard shield 26.
In addition, when the active force extracting direction x along introducing pin 21 is sufficiently large, introducing pin 21, holding part 27 and guard shield 26
Depart from catheter block 22 together, and the tip 211 introducing pin 21 remains in guard shield 26.
In the present embodiment, the outer surface of guard shield 26 and the inner surface of catheter block 22 are close-fitting relationship, it is to avoid outward
Boundary's impurity is entered in catheter block 22 by guard shield 26.
In addition, the far-end of guard shield 26 also can arrange one and the close-fitting chock plug of catheter block 22 (sign), described introducing
Pin 21 passes through chock plug to pass catheter block 22, so, after catheter block 22 extracted together by guard shield 26 and introducing pin 21, still can pass through
Chock plug realizes the sealing of catheter block 22 port.
In the present embodiment, guard shield 26 also include with accommodating chamber 261 conducting groove 262, described groove 262 transversal
Face is generally circular, and the internal diameter of groove 262 is substantially equal with the external diameter introducing pin 21, to control the insertion/pull out introducing pin 21
Outgoing direction.
In the present embodiment, described holding part 27 includes at least one claw 271, and described claw 271 has elasticity, works as institute
When stating blood back groove 212 and reaching at described holding part 27, the distal end 2711 of described claw 271 is transported towards described blood back groove 212
Move and be limited in described blood back groove 212.
Here, claw 271 extracts the section of direction x substantially in " l " type of falling along introducing pin 21, that is, be in barb type.
When described blood back groove 212 does not reach at described holding part 27, claw 271 essence is and the outer surface introducing pin 21
Contact, claw 271 has the trend being directed away from introducing pin 21 Direction distortion；When described blood back groove 212 reaches described holding part
When at 27, due to lose introduce pin 21 outer surface support effect, claw 271 have towards near introduce pin 21 direction retraction
Trend, now, the distal end 2711 of claw 271 is just held in blood back groove 212.
In the present embodiment, in conjunction with Fig. 5 to Fig. 7, described holding part 27 also includes base 272, and described holding part 27 wraps
Include some claws 271 being distributed in described base 272 far-end.
Here, being uniformly distributed by some claws 271, it is possible to achieve the stable cooperation of claw 271 and blood back groove 212,
And the blood back groove 212 of any position can be retained.
In addition, the outline of described base 272 is rounded, some claws 271 are arranged around the periphery of described base 272,
And the distal end 2711 of some claws 271 gathers.
That is, now holding part 27 is overall is in lantern-shaped.
It should be noted that some claws 271 can be flexibly connected with base 272, but it is not limited, some claws 271
Also can interfix with base 272.
In the present embodiment, the accommodating chamber 261 of described guard shield 26 is cylindrical, and the internal diameter of described accommodating chamber 261 with
The external diameter of described base 272 is equal.
Here, base 272 essence of holding part 27 is mutually abutted with the inner surface of accommodating chamber 261, so, can avoid clamping
Part 27 rocks along the radial direction of accommodating chamber 261.
In addition, in the described insertion/extract on the x of direction introducing pin 21, described accommodating chamber 261 has the first length d1, institute
State holding part 27 and there is the second length d2, described first length d1 is more than described second length d2.
That is, when holding part 27 abuts the near-end of accommodating chamber 261, the far-end of holding part 27 and accommodating chamber 261
Between far-end, setting has a space s, and this space s can be used for accommodating the blood of backflow.
Holding part 27 and accommodating chamber 261 can be relatively-stationary relation, but are not limited, and holding part 27 also can be in receiving
Extract direction x along introducing pin 21 in chamber 261 to move forward and backward.
In the present embodiment, described base 272 has pass through aperture 2721, the distal end 2711 of some claws 271
Enclose and be set as an opening 2712, described introducing pin 21 sequentially pass through described through hole 2721 and described opening 2712 and with described clamping
Part 27 cooperates.
The center of described through hole 2721 introduces inserting of pin 21 with the line direction at center of described opening 2712 with described
Enter/extract direction x consistent.
That is, the centrage of the groove 262 of through hole 2721, opening 2712 and guard shield 26 is same straight line, introduce
Pin 21 can be straight across through hole 2721, opening 2712 and groove 262, thus avoiding introducing the bending of pin 21 stress.
Here, when described blood back groove 212 is located at the far-end of described holding part 27, some claws 271 are connected to introducing pin
21 outer surface, described opening 2712 has the first opening bore d1, when described blood back groove 212 and described holding part 27 phase interworking
During conjunction, being at least partly held in blood back groove 212 of some claws 271, described opening 2712 has the second opening bore d2, institute
State the first opening mouth d1 footpath and be more than described second opening bore d2.
Here, because claw 271 has elasticity, after claw 271 enters blood back groove 212, at least part of claw 271 can court
Realize gathering further to opening 2712 center retraction, opening bore diminishes.
In addition, described first opening bore d1 is equal with the opening bore of described through hole 2721, now, through hole 2721
It is mutually matched with the outer surface introducing pin 21.
It should be noted that the shape of opening 2712 is mutually matched with the outer surface introducing pin 21, opening 2712 is in substantially
Circle, the first opening bore d1 and the second opening bore d2 substantially refer to the average calibre of opening 2712, or opening 2712
Lowest calibre.But it is not limited, opening 2712 also can be in other shapes.
It should be understood that although this specification is been described by according to embodiment, but not each embodiment only comprises one
Individual independent technical scheme, only for clarity, those skilled in the art should will say this narrating mode of description
As an entirety, the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can for bright book
With the other embodiment understanding.
The a series of detailed description of those listed above is only for the feasibility embodiment of the present invention specifically
Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention
Or change should be included within the scope of the present invention.
Claims (10)
1. a kind of introducing needle protection for conduit tube component, described conduit tube component has introducing pin, conduit and catheter block, institute
State conduit be located at described catheter block far-end, described introducing pin insert/extract described conduit and described catheter block it is characterised in that
Described introducing needle protection includes:
Guard shield, it is removably coordinated with the inner surface of described catheter block, and described guard shield is internally formed an accommodating chamber；
Holding part, it is located at described receiving intracavity；
Wherein, the described far-end introducing pin has tip, and has blood back groove on described introducing pin, when described introducing pin has been extracted
Cheng Shi, described holding part is limited in described blood back groove so that described tip remains in described guard shield.
2. the introducing needle protection for conduit tube component according to claim 1 is it is characterised in that described holding part bag
Include at least one claw, described claw has elasticity, when described blood back groove reaches at described holding part, the distal end of described claw
Portion moves towards described blood back groove and is limited in described blood back groove.
3. the introducing needle protection for conduit tube component according to claim 2 it is characterised in that described holding part also
Including base, described holding part includes being distributed in some claws of described base far-end.
4. the introducing needle protection for conduit tube component according to claim 3 is it is characterised in that described base has
Pass through aperture, the distal end of some claws encloses and is set as an opening, and described introducing pin is through described through hole and described opening
Cooperate with described holding part.
5. the introducing needle protection for conduit tube component according to claim 4 is it is characterised in that work as described holding part
Positioned at described receiving intracavity when, the pulling out of the line direction at the center of described through hole and the center of described opening and described introducing pin
Outgoing direction is consistent.
6. according to claim 3 for conduit tube component introduce needle protection it is characterised in that described base outer
Profile is rounded, and some dog rings are arranged around the periphery of described base.
7. the introducing needle protection for conduit tube component according to claim 6 is it is characterised in that described accommodating chamber is in
Cylindric, the internal diameter of described accommodating chamber is equal with the external diameter of described base.
8. the introducing needle protection for conduit tube component according to claim 1 is it is characterised in that in described introducing pin
Extract on direction, described accommodating chamber has the first length, described holding part has the second length, described first length is more than described
Second length.
9. a kind of conduit tube component it is characterised in that include is introduced into pin, conduit, catheter block and any one such as in claim 1-8
Described introducing needle protection, described conduit is located at the far-end of described catheter block, and described introducing pin inserts/extract described conduit
And described catheter block, described introducing needle protection and described catheter block are detachably matched.
10. a kind of remaining needle is it is characterised in that include conduit tube component as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610767797.7A CN106362263A (en) | 2016-08-30 | 2016-08-30 | Introducing needle protective device used for catheter assembly, catheter assembly and indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610767797.7A CN106362263A (en) | 2016-08-30 | 2016-08-30 | Introducing needle protective device used for catheter assembly, catheter assembly and indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106362263A true CN106362263A (en) | 2017-02-01 |
Family
ID=57901649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610767797.7A Pending CN106362263A (en) | 2016-08-30 | 2016-08-30 | Introducing needle protective device used for catheter assembly, catheter assembly and indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106362263A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103007384A (en) * | 2006-11-03 | 2013-04-03 | B.布劳恩梅尔松根股份公司 | Catheter assembly and components thereof |
| CN203075435U (en) * | 2012-12-03 | 2013-07-24 | 康而富控股股份有限公司 | Needle head protecting device for intravenous injection indwelling needle |
| CN103285450A (en) * | 2013-03-25 | 2013-09-11 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| CN204121526U (en) * | 2014-09-05 | 2015-01-28 | 广东百合医疗科技股份有限公司 | Safe type venous retaining needle |
| WO2015161294A1 (en) * | 2014-04-18 | 2015-10-22 | Becton, Dickinson And Company | Multi-use blood control safety catheter assembly |
| CN205041892U (en) * | 2015-06-25 | 2016-02-24 | 千禧光医疗有限公司 | A keep somewhere needle for keeping somewhere release mechanism of needle and have this release mechanism |
| CN205073413U (en) * | 2015-09-08 | 2016-03-09 | 北京大学深圳医院 | Safe venous indwelling needle |
-
2016
- 2016-08-30 CN CN201610767797.7A patent/CN106362263A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103007384A (en) * | 2006-11-03 | 2013-04-03 | B.布劳恩梅尔松根股份公司 | Catheter assembly and components thereof |
| CN203075435U (en) * | 2012-12-03 | 2013-07-24 | 康而富控股股份有限公司 | Needle head protecting device for intravenous injection indwelling needle |
| CN103285450A (en) * | 2013-03-25 | 2013-09-11 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| WO2015161294A1 (en) * | 2014-04-18 | 2015-10-22 | Becton, Dickinson And Company | Multi-use blood control safety catheter assembly |
| CN204121526U (en) * | 2014-09-05 | 2015-01-28 | 广东百合医疗科技股份有限公司 | Safe type venous retaining needle |
| CN205041892U (en) * | 2015-06-25 | 2016-02-24 | 千禧光医疗有限公司 | A keep somewhere needle for keeping somewhere release mechanism of needle and have this release mechanism |
| CN205073413U (en) * | 2015-09-08 | 2016-03-09 | 北京大学深圳医院 | Safe venous indwelling needle |
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Application publication date: 20170201 |