CN109224175A - A kind of preventing thrombosis venous infusion catheter - Google Patents
A kind of preventing thrombosis venous infusion catheter Download PDFInfo
- Publication number
- CN109224175A CN109224175A CN201811036493.9A CN201811036493A CN109224175A CN 109224175 A CN109224175 A CN 109224175A CN 201811036493 A CN201811036493 A CN 201811036493A CN 109224175 A CN109224175 A CN 109224175A
- Authority
- CN
- China
- Prior art keywords
- infusion
- preventing thrombosis
- inner tube
- outer tube
- channel
- 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
Links
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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/1407—Infusion of two or more substances
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Pulmonology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a kind of preventing thrombosis venous infusion catheters, including inner and outer tubes, inner tube is nestable to be located in outer tube, when preventing thrombosis venous infusion catheter carries out infusion work, outer infusion channel between inner and outer tubes stores corresponding vein and conveys liquid, under the action of conveying hydraulic coupling, resistant to blood reflux infusion hole opens from inside to outside, play the role of infusion, during preventing thrombosis venous infusion catheter is retained in human vein, preventing thrombosis medical fluid is full of in outer infusion channel, because blood flow can have certain pressure to outer tube whole process, it conducts to the resistant to blood reflux of outer tube and is infused at hole and makes a little higher than blood pressure of outer pipe pressure at this, to make the antithrombotic medical fluid in outer infusion channel that can pass through slowly resistant to blood reflux infusion hole to intravascular outflow, play the role of preventing thrombosis, realize catheter infusion and preventing thrombosis The double effects of formation, the configuration of the present invention is simple, practical, easy to use and popularization.
Description
Technical field
The present invention relates to medical instruments field, specifically a kind of preventing thrombosis venous infusion catheter.
Background technique
Treat in long-term intravenous, need to be transfused irritation chemotherapeutics, high concentration nutritional substance or vasoactive agent etc.
In the patient for the treatment of, while pain is brought in order to reduce frequent venipuncture to patient, percutaneous puncture is needed to be placed in central vein
(such as jugular vein, subclavian vein and femoral vein) conduit or percutaneous puncture Peripherally Inserted Central Catheter, with
The vein input of liquid as above is carried out by the conduit of indwelling.
Indwelling usually requires to retain a couple of days to the several months etc. in endovascular conduit, and some patientss are because of itself during indwelling
High blood coagulation state or conduit stimulate, and will form thrombus in surrounding catheter and conduit, lead to blocking in conduit and can not continue
It uses, and leads to extract thrombus breaks loose around its in catheter procedure and cause distal vessels embolism, give patient and curative activity band
To perplex, it is therefore desirable to which one kind can prevent the venous infusion catheter of thrombosis.
Summary of the invention
It is mentioned above in the background art to solve the purpose of the present invention is to provide a kind of preventing thrombosis venous infusion catheter
Problem.
To achieve the above object, the invention provides the following technical scheme:
A kind of preventing thrombosis venous infusion catheter, including inner and outer tubes, said inner tube is nestable to be located in outer tube, is equipped in inner tube interior
Infusion channel, is equipped with outer infusion channel between inner and outer tubes, and in catheter infusion, storage inside is quiet in the outer infusion channel
Arteries and veins conveys liquid, and the anti-tampon medical fluid of outer infusion channel storage inside in catheter retaining, fixed intervals is equipped on the outer tube
Several resistant to blood reflux infusion holes, the resistant to blood reflux infusion hole is half wedge-like opening.
As a further solution of the present invention: the proximal end of leaning on of said inner tube and outer tube is closed is connected smoothly.
As the present invention further scheme: said inner tube and outer tube be respectively equipped with after separating end independent inner tube into
Liquid mouth and outer tube inlet.
As further scheme of the invention: the anti-tampon medical fluid that the outer infusion channel is stored in catheter retaining
For heparin diluent.
As further scheme of the invention: said inner tube leads directly to central vein from external.
As further scheme of the invention: said inner tube and outer tube are all made of the transparent flexible PVC modeling of medical poisonless
Material.
As further scheme of the invention: being equipped at said inner tube inlet, outer tube inlet and separating end solid
Determine part.
As the present invention further scheme: by outer infusion channel in catheter retaining the anti-tampon medical fluid of storage inside
Replace with thrombolytic drug.
As further scheme of the invention: the thrombolytic drug is urokinase.
Compared with prior art, the beneficial effects of the present invention are: when preventing thrombosis venous infusion catheter carries out infusion work,
Outer infusion channel between inner and outer tubes stores corresponding vein and conveys liquid, outer defeated when being infused using outer infusion channel
The multiple resistant to blood reflux infusion hole for half wedge-like opening that liquid channel has, conveys when being full of vein in outer infusion channel
When liquid, under the action of conveying hydraulic coupling, resistant to blood reflux infusion hole opens from inside to outside, allows to store in outer infusion channel
Conveying liquid stream to vein blood vessel, play the role of infusion, the work of interior infusion channel in inner tube cooperated to improve the efficiency of infusion,
During preventing thrombosis venous infusion catheter is retained in human vein, preventing thrombosis medical fluid is full of in outer infusion channel, because of blood flow
There can be certain pressure to outer tube whole process, conduct to the resistant to blood reflux of outer tube and be infused at hole and keep the outer pipe pressure at this slightly higher
In blood pressure, to make the antithrombotic medical fluid in outer infusion channel that can pass through slowly resistant to blood reflux infusion hole to blood vessel
Interior outflow, and prevent endovascular blood reflux from entering outer layer pipeline, resistant to blood reflux infusion hole has after entering vein blood vessel
The formation for preventing thrombus during catheter retaining of effect, plays the role of preventing thrombosis, double by preventing thrombosis venous infusion catheter
The setting of layer pipeline and resistant to blood reflux infusion hole, realizes the double effects of infusion and preventing thrombosis formation, solves vein
In infusion around inlying catheter the problem of thrombosis, bring great convenience to patient and curative activity, structure of the invention letter
Single, practical, easy to use and popularization.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of preventing thrombosis venous infusion catheter.
Fig. 2 is the structural schematic diagram that proximal end is leaned in preventing thrombosis venous infusion catheter.
Fig. 3 is the cross section structure schematic diagram of preventing thrombosis venous infusion catheter.
Fig. 4 is the structural schematic diagram of the resistant to blood reflux infusion hole of preventing thrombosis venous infusion catheter.
Wherein: inner tube 1, outer tube 2, resistant to blood reflux infusion hole 3, interior infusion channel 4, outer infusion channel 5, by proximal end 6,
Separating end 7, inner tube inlet 8, outer tube inlet 9, fixing piece 10.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1:
Please refer to Fig. 1~3, in the embodiment of the present invention, a kind of preventing thrombosis venous infusion catheter, including inner tube 1 and outer tube 2, it is described
Inner tube 1 is nestable to be located in outer tube 2, and interior infusion channel 4 is equipped in inner tube 1, outer infusion channel 5 is equipped between inner tube 1 and outer tube 2,
In the outer infusion channel 5 in catheter infusion storage inside vein convey liquid, outer infusion channel 5 in catheter retaining inside deposit
Anti- tampon medical fluid is stored up, several resistant to blood reflux that are equipped with of fixed intervals are infused hole 3 on the outer tube 2, and the resistant to blood is anti-
Stream infusion hole 3 is half wedge-like opening, when work, when preventing thrombosis venous infusion catheter carries out infusion work, and inner tube 1 and outer tube
Outer infusion channel 5 between 2 stores corresponding vein conveying liquid, when being infused using outer infusion channel 5, outer infusion channel 5
The multiple resistant to blood reflux infusion hole 3 for half wedge-like opening having, conveys liquid when being full of vein in outer infusion channel 5
When, under the action of conveying hydraulic coupling, resistant to blood reflux infusion hole 3 opens from inside to outside, allows to store in outer infusion channel 5
Conveying liquid stream to vein blood vessel, play the role of infusion, the work of interior infusion channel 4 in inner tube 1 cooperated to improve the effect of infusion
Rate is full of preventing thrombosis medical fluid, because of blood during preventing thrombosis venous infusion catheter is retained in human vein in outer infusion channel 5
Flowing can have certain pressure to 2 whole process of outer tube, conduct to the resistant to blood reflux of outer tube 2 and be infused at hole 3 and make the outer tube 2 at this
The a little higher than blood pressure of pressure is infused to make the antithrombotic medical fluid in outer infusion channel 5 that can pass through slowly resistant to blood reflux
Hole 3 prevents endovascular blood reflux from entering outer layer pipeline to intravascular outflow, and resistant to blood reflux infusion hole 3 enters
The formation that thrombus during catheter retaining is effectively prevented after vein blood vessel, plays the role of preventing thrombosis, quiet by preventing thrombosis
The setting of arteries and veins transfusion catheter Double layer pipeline and resistant to blood reflux infusion hole 3, realizes the dual function of infusion and preventing thrombosis formation
Effect solves the problems, such as in venous transfusion thrombosis around inlying catheter, brings great convenience to patient and curative activity.
The proximal end 6 of leaning on of said inner tube 1 and outer tube 2 is closed is connected smoothly, it is ensured that outer defeated between inner tube 1 and outer tube 2
While liquid channel 5 seals, it ensure that preventing thrombosis venous infusion catheter delivers into central vein process and do not damage vascular wall,
It is safe and practical in medical transfusion convenient for conduit.
Said inner tube 1 and outer tube 2 are respectively equipped with independent inner tube inlet 8 and outer tube inlet 9 after separating end 7, use
In inwardly infusion channel 4 and outer infusion channel 5 inject different medical fluids in conduit and infusion, to realize preventing thrombosis venous transfusion
The double effects that catheter infusion and preventing thrombosis are formed.
The anti-tampon medical fluid that the outer infusion channel 5 is stored in catheter retaining is heparin diluent, heparin diluent
It is a kind of antithrombotic effective medical fluid, lasting medicine meets the actual demand of preventing thrombosis venous infusion catheter work.
Said inner tube 1 is from straight-through central vein in vitro, to guarantee input liquid to central vein.
Said inner tube 1 and outer tube 2 are all made of the transparent soft polyvinyl chloride plastic of medical poisonless, it is ensured that conduit material safety nothing
Poison meets related medical instrument and uses safety standard.
It is equipped with fixing piece 10 at said inner tube inlet 8, outer tube inlet 9 and separating end 7, it is defeated convenient for preventing thrombosis vein
Fixation and suspension installation when fluid catheter conduit uses.
Embodiment 2:
Please refer to Fig. 1~3, the embodiment of the present invention the difference from embodiment 1 is that, by 1 China and foreign countries' infusion channel 5 of embodiment in conduit
The anti-tampon medical fluid of storage inside replaces with thrombolytic drug when indwelling.
Thrombolytic drug is stored in outer infusion channel 5 between said inner tube 1 and outer tube 2, the shape around transfusion catheter
When at thrombus, thrombolytic drug is transfused by outside infusion channel 5, the thrombolytic drug in outer infusion channel 5 passes through anti-on outer tube 2
Blood reflux infusion hole 3 flows slowly into thrombus at phlebothrombosis, prevents blocking in conduit and can not continue to use, and
Lead to extract thrombus breaks loose around its in catheter procedure and cause distal vessels embolism, to improve preventing thrombosis venous infusion catheter
Functionality.
The thrombolytic drug stored in the outer infusion channel 5 is urokinase, and urease can effectively decompose thrombus.
It should be strongly noted that related medical medical fluid and articles are the application of the prior art, the application in the application
In be equipped with inner tube 1 and outer tube 2, said inner tube 1 is nestable to be located in outer tube 2, is equipped with interior infusion channel 4 in inner tube 1, inner tube 1 and outer
Outer infusion channel 5, storage inside vein conveying liquid, outer infusion in catheter infusion in the outer infusion channel 5 are equipped between pipe 2
The anti-tampon medical fluid of the storage inside in catheter retaining of channel 5, fixed intervals is equipped with several resistant to blood reflux on the outer tube 2
It is infused hole 3, resistant to blood reflux infusion hole 3 is half wedge-like opening, when work, is carried out in preventing thrombosis venous infusion catheter
When infusion work, the outer infusion channel 5 between inner tube 1 and outer tube 2 stores corresponding vein conveying liquid, using outer infusion channel 5
When being infused, the multiple resistant to blood reflux infusion hole 3 for half wedge-like opening that outer infusion channel 5 has, when outer infusion
When in channel 5 full of vein conveying liquid, under the action of conveying hydraulic coupling, resistant to blood reflux infusion hole 3 opens from inside to outside,
The conveying liquid stream for allowing to store in outer infusion channel 5 plays the role of infusion to vein blood vessel, cooperates interior infusion in inner tube 1 logical
The work in road 4 improves the efficiency of infusion, during preventing thrombosis venous infusion catheter is retained in human vein, in outer infusion channel 5
Full of preventing thrombosis medical fluid, because blood flow there can be certain pressure to 2 whole process of outer tube, conducts to the resistant to blood reflux of outer tube 2 and be infused
Make a little higher than blood pressure of 2 pressure of outer tube at this at hole 3, to make the antithrombotic medical fluid in outer infusion channel 5 that can delay
Slow is infused hole 3 to intravascular outflow by resistant to blood reflux, and prevents endovascular blood reflux from entering outer layer pipeline, prevents
The formation that thrombus during catheter retaining is effectively prevented after the blood reflux infusion entrance vein blood vessel of hole 3, plays anti-tampon
Formation effect realizes infusion by the setting of preventing thrombosis venous infusion catheter Double layer pipeline and resistant to blood reflux infusion hole 3
The double effects formed with preventing thrombosis solve the problems, such as in venous transfusion thrombosis around inlying catheter, give patient and doctor
Work is treated to bring great convenience.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (9)
1. a kind of preventing thrombosis venous infusion catheter, including inner tube (1) and outer tube (2), which is characterized in that said inner tube (1) is nestable
In outer tube (2), interior infusion channel (4) are equipped in inner tube (1), outer infusion channel is equipped between inner tube (1) and outer tube (2)
(5), in catheter infusion, storage inside vein conveys liquid in the outer infusion channel (5), and outer infusion channel (5) is in catheter retaining
When the anti-tampon medical fluid of storage inside, fixed intervals are equipped with several resistant to blood reflux infusion hole (3) on the outer tube (2),
Resistant to blood reflux infusion hole (3) is half wedge-like opening.
2. preventing thrombosis venous infusion catheter according to claim 1, which is characterized in that said inner tube (1) and outer tube (2)
It is closed be connected smoothly by proximal end (6).
3. preventing thrombosis venous infusion catheter according to claim 1, which is characterized in that said inner tube (1) and outer tube (2) exist
Independent inner tube inlet (8) and outer tube inlet (9) are respectively equipped with after separating end (7).
4. preventing thrombosis venous infusion catheter according to claim 1, which is characterized in that the outer infusion channel (5) is being led
The anti-tampon medical fluid stored when pipe indwelling is heparin diluent.
5. preventing thrombosis venous infusion catheter according to claim 1, which is characterized in that said inner tube (1) is led directly to from external
Central vein.
6. preventing thrombosis venous infusion catheter according to claim 1, which is characterized in that said inner tube (1) and outer tube (2) are equal
Using the transparent soft polyvinyl chloride plastic of medical poisonless.
7. preventing thrombosis venous infusion catheter according to claim 3, which is characterized in that said inner tube inlet (8), outer tube
Fixing piece (10) are equipped at inlet (9) and separating end (7).
8. preventing thrombosis venous infusion catheter according to claim 1, which is characterized in that by outer infusion channel (5) in conduit
The anti-tampon medical fluid of storage inside replaces with thrombolytic drug when indwelling.
9. preventing thrombosis venous infusion catheter according to claim 8, which is characterized in that the thrombolytic drug is urokinase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036493.9A CN109224175A (en) | 2018-09-06 | 2018-09-06 | A kind of preventing thrombosis venous infusion catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811036493.9A CN109224175A (en) | 2018-09-06 | 2018-09-06 | A kind of preventing thrombosis venous infusion catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109224175A true CN109224175A (en) | 2019-01-18 |
Family
ID=65060816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811036493.9A Pending CN109224175A (en) | 2018-09-06 | 2018-09-06 | A kind of preventing thrombosis venous infusion catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109224175A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110051915A (en) * | 2019-05-07 | 2019-07-26 | 中国人民解放军陆军军医大学第二附属医院 | A kind of disposable Deep venou perfusion tube band capped pipe core with heparin coating |
| CN113855906A (en) * | 2021-09-24 | 2021-12-31 | 泸州市中医医院(泸州市中西医结合医院、泸州市江阳区中医医院) | Thrombosis-proof central venous catheter |
| CN118383844A (en) * | 2024-04-30 | 2024-07-26 | 复旦大学附属中山医院 | Puncture tube and thrombus inspection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050065469A1 (en) * | 2003-09-24 | 2005-03-24 | Tal Michael G. | Method and apparatus for treatment of thrombosed hemodialysis access grafts |
| CN201988022U (en) * | 2011-01-10 | 2011-09-28 | 薛智军 | Thrombolysis catheter fixator |
| US20130138077A1 (en) * | 2010-10-05 | 2013-05-30 | Therese J. O'Day | Infusion catheter and methods |
| CN103816601A (en) * | 2012-07-05 | 2014-05-28 | 科维蒂恩有限合伙公司 | Valved tip catheters |
| CN105833414A (en) * | 2016-05-31 | 2016-08-10 | 李炫� | Thrombus prevention and treatment catheter |
-
2018
- 2018-09-06 CN CN201811036493.9A patent/CN109224175A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050065469A1 (en) * | 2003-09-24 | 2005-03-24 | Tal Michael G. | Method and apparatus for treatment of thrombosed hemodialysis access grafts |
| US20130138077A1 (en) * | 2010-10-05 | 2013-05-30 | Therese J. O'Day | Infusion catheter and methods |
| CN201988022U (en) * | 2011-01-10 | 2011-09-28 | 薛智军 | Thrombolysis catheter fixator |
| CN103816601A (en) * | 2012-07-05 | 2014-05-28 | 科维蒂恩有限合伙公司 | Valved tip catheters |
| CN105833414A (en) * | 2016-05-31 | 2016-08-10 | 李炫� | Thrombus prevention and treatment catheter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110051915A (en) * | 2019-05-07 | 2019-07-26 | 中国人民解放军陆军军医大学第二附属医院 | A kind of disposable Deep venou perfusion tube band capped pipe core with heparin coating |
| CN110051915B (en) * | 2019-05-07 | 2022-02-11 | 中国人民解放军陆军军医大学第二附属医院 | Disposable deep vein infusion tube core with cap and heparin coating |
| CN113855906A (en) * | 2021-09-24 | 2021-12-31 | 泸州市中医医院(泸州市中西医结合医院、泸州市江阳区中医医院) | Thrombosis-proof central venous catheter |
| CN118383844A (en) * | 2024-04-30 | 2024-07-26 | 复旦大学附属中山医院 | Puncture tube and thrombus inspection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5290263A (en) | Bidirectional check valve catheter | |
| Ash | Advances in tunneled central venous catheters for dialysis: design and performance | |
| EP0125844B1 (en) | Valved two-way catheter | |
| US4701166A (en) | Valved two-way catheter | |
| US4493696A (en) | Hemodialysis cannular for subclavian insertion | |
| US6685664B2 (en) | Method and apparatus for ultrafiltration utilizing a long peripheral access venous cannula for blood withdrawal | |
| Canaud et al. | Dialock: a new vascular access device for extracorporeal renal replacement therapy. Preliminary clinical results. | |
| US20100256487A1 (en) | Micro central line vascular access catheter and method of use | |
| US20090306606A1 (en) | Catheter hub assembly with vascular access port | |
| CN109224175A (en) | A kind of preventing thrombosis venous infusion catheter | |
| CN107789719B (en) | Inner core-free thrombolysis catheter | |
| JP7500580B2 (en) | Needleless access connector for facilitating delivery of instruments to a catheter assembly | |
| CN104399146B (en) | A kind of coaxial trocar sheath self-sealing venous detaining needle | |
| EP0456748B1 (en) | A single-lumen, bidirectional, check valve catheter | |
| Hudman et al. | Practical aspects of long-term venous access | |
| CN214911360U (en) | Flushing device for hemodialysis long-term catheter subcutaneous tunnel infection | |
| US11077239B2 (en) | Tributary access device and methods of use | |
| CN211383104U (en) | Venous catheter plugging device | |
| Kelly | The family of vascular access devices | |
| JP7445751B2 (en) | Vascular access system and method | |
| CN208785553U (en) | A kind of ductus venosus and medical instrument | |
| CN210170582U (en) | Remaining needle for reducing complication incidence | |
| CN211675621U (en) | Catheter for blood perfusion | |
| Sharma et al. | Image guided central venous line and port insertion | |
| Twardowski | Development of Blood Accesses for Hemodialysis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190118 |
|
| RJ01 | Rejection of invention patent application after publication |