CN101785897B - Peripherally inserted central catheter - Google Patents
Peripherally inserted central catheter Download PDFInfo
- Publication number
- CN101785897B CN101785897B CN2010101320579A CN201010132057A CN101785897B CN 101785897 B CN101785897 B CN 101785897B CN 2010101320579 A CN2010101320579 A CN 2010101320579A CN 201010132057 A CN201010132057 A CN 201010132057A CN 101785897 B CN101785897 B CN 101785897B
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- CN
- China
- Prior art keywords
- catheter
- cutting
- conduit
- joint
- cut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000001802 infusion Methods 0.000 claims abstract description 26
- 238000005520 cutting process Methods 0.000 claims description 46
- 210000003462 vein Anatomy 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 206010027535 Microcheilia Diseases 0.000 claims description 6
- 239000008280 blood Substances 0.000 abstract description 12
- 210000004369 blood Anatomy 0.000 abstract description 12
- 239000003814 drug Substances 0.000 abstract description 8
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 208000036828 Device occlusion Diseases 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 229940079593 drug Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000002512 chemotherapy Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 235000016236 parenteral nutrition Nutrition 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 210000002620 vena cava superior Anatomy 0.000 description 1
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to a peripherally inserted central catheter, which comprises a catheter and a closed needle-less infusion connector, wherein the catheter is connected with the closed needle-less infusion connector by a connecting device; and a catheter cut is formed on the catheter wall at a position deviating from the central axial surface of the catheter. The catheter cut is naturally closed when the blood is not drawn back and the liquid medicament is not transfused or injected, a negative pressure is generated in a catheter cavity when the blood is drawn back by medical personnel, the large lip of the catheter cut sinks inwards; a positive pressure is generated in the catheter cavity when the liquid medicament is injected or transfused by the medical personnel, the large lip of the catheter cut bulges outwards; therefore, the catheter cut functions as a two-way catheter valve and is used as the inlet and outlet for the liquid medicament transfusion and injection and the effective opening is formed to facilitate liquid medicament injection and transfusion. The peripherally inserted central catheter has the advantages of simple structure, convenient use, good liquid controllability over the medicament transfusion and injection and capability of avoiding catheter blockage.
Description
Technical field
The present invention relates to a kind of medical apparatus and instruments, specifically a kind of peripheral vein is inserted central venous catheter.
Background technology
We know, through central venous catheter (PICC) that peripheral vein puncture is inserted as art in monitoring, blood transfusion, fluid infusion, the various medicines for treatment of postoperative and cancer patient's chemotherapy, the path of parenteral nutrition, become the central vein catheter technology of a kind of maturation, safety, popularized gradually at home in recent years.At present, the central venous catheter that can keep somewhere lastingly comprises inlying catheter, airtight needleless infusion medicinal liquid joint, and inlying catheter is connected with airtight needleless infusion medicinal liquid joint by connecting device.Inlying catheter is positioned superior vena cava, is used to the patient that the venous transfusion treatment of medium to long term is provided.Central vein catheter is in the long periods of treatment process, not only solved the misery that patient punctures every day, can not cause local pain in some medicine for treatment of infusion (as potassium) yet, and improved nurse's work efficiency, but along with the popularization of central venous catheter clinical practice, many problems also come out gradually.It is the major issue that prolonged application vein treatment or nutrition patient run into that conduit stops up, and usually so more replace tubes or puncture again, it is generally acknowledged that to cause that conduit stops up former because clot, cellulose thrombosis or drug deposition.U.S. Pat 4671769 discloses a kind of venous duct, and it is at catheter wall upper edge central axis joint-cutting, and two lip limits of conduit joint-cutting are symmetry fully.The conduit joint-cutting is in the natural enclosing state when not drawing back blood and defeated, injection liquid.Conduit cavity formed negative pressure when medical personnel drew back blood, and two lip limits of conduit joint-cutting concave simultaneously; And conduit cavity forms malleation when medical personnel's infusion medicinal liquid, and two lip limits of conduit joint-cutting are simultaneously to evagination, and like this, joint-cutting is imported and exported as the infusion medicinal liquid, also plays valve simultaneously.But because two lip limits of joint-cutting are symmetrical fully, it is difficult to form effective vent, causes infusion medicinal liquid difficulty.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, provides a kind of rational in infrastructure, easy to use, has potential two-way conduit valve, and infusion medicinal liquid controllability is good, and the peripheral vein of avoiding conduit to stop up is inserted central venous catheter.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of peripheral vein is inserted central venous catheter, comprise conduit, airtight needleless infusion medicinal liquid joint, inlying catheter is connected with airtight needleless infusion medicinal liquid joint by connecting device, it is characterized in that departing from the catheter wall catheter center's axial plane and is provided with a conduit joint-cutting.
The said conduit joint-cutting of the present invention departs from the distance of catheter center's axial plane between the 0.2-0.6 millimeter.
Also be provided with a groove on the pipe inner wall of the big lip of the said conduit joint-cutting of the present invention limit one side along axis.
The present invention is provided with a conduit joint-cutting owing to depart from catheter center's axial plane on catheter wall, this conduit joint-cutting is in the natural enclosing state when not drawing back blood and defeated, injection liquid, and conduit cavity forms negative pressure when medical personnel draw back blood, and the big lip of conduit joint-cutting limit concaves; Conduit cavity forms malleation when medical personnel's infusion medicinal liquid, and the big lip of conduit joint-cutting limit is to evagination, and like this, the conduit joint-cutting has the effect of two-way conduit valve, imports and exports as the infusion medicinal liquid, can form effective vent, makes things convenient for the infusion medicinal liquid.Against existing technologies, the present invention is rational in infrastructure, and is easy to use, and infusion medicinal liquid controllability is good, can effectively avoid conduit to stop up.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a conduit partial schematic diagram of the present invention.
Fig. 3 is that the A-A of Fig. 2 is to cutaway view.
Fig. 4 be conduit of the present invention when drawing back blood and forming negative pressure joint-cutting A-A to cross section deformation sketch map.
Fig. 5 is that conduit of the present invention is defeated, when injection liquid forms malleation joint-cutting A-A to cross section deformation sketch map.
1. airtight needleless infusion medicinal liquid joints among the figure, 2. connecting device, 3. conduit, 4. conduit cavity, the 5. big lip of conduit joint-cutting 6. conduit joint-cuttings limit, 7. conduit joint-cutting microcheilia limit, 8. groove.
The specific embodiment
As can be seen from Figure 1, a kind of peripheral vein is inserted central venous catheter, comprises conduit 3, airtight needleless infusion medicinal liquid joint 1, and inlying catheter 3 is connected with airtight needleless infusion medicinal liquid joint 1 by connecting device 2.Tube material is biocompatible materialses such as silica gel, softness, and good springiness also is marked with scale mark on the conduit.Described airtight needleless infusion medicinal liquid joint 1 is identical with prior art with connecting device 2, repeats no more.
Characteristics of the present invention are: depart from catheter center's axial plane on conduit 3 walls and be provided with a conduit joint-cutting 5.Said conduit joint-cutting 5 departs from the distance of catheter center's axial plane between the 0.2-0.6 millimeter.The both sides of conduit joint-cutting 5 form conduit joint-cutting big lip limit 6 and conduit joint-cutting microcheilia limit 7.As Fig. 2, shown in Figure 3.Conduit joint-cutting 5 is potential two way valves.This conduit joint-cutting 5 is in the natural enclosing state when not drawing back blood and defeated, injection liquid, stop the blood of human body outflow of driving in the wrong direction.And when medical personnel drew back blood, conduit cavity 4 formed negative pressure, and the big lip of conduit joint-cutting limit 6 is stressed greater than conduit joint-cutting microcheilia limit 7, the big lip of conduit joint-cutting limit 6 concaves, and conduit joint-cutting 5 potential valve slits enlarge, and forms opening, blood just can pass through smoothly, as shown in Figure 4.Conduit cavity forms malleation when medical personnel's infusion medicinal liquid, manifold pressure has surpassed the pressure beyond the predetermined number conduit, the big lip of conduit joint-cutting limit 6 is stressed greater than conduit joint-cutting microcheilia limit 7, the big lip limit of conduit joint-cutting is to evagination, conduit joint-cutting 5 potential valve slits enlarge, form opening, as shown in Figure 5.Medicinal liquid just can be realized therapeutic purposes through opening smoothly.
Also be provided with a groove 8 on the pipe inner wall of the big lip of the said conduit joint-cutting of the present invention limit 6 one sides along axis.Can make the big lip of conduit joint-cutting limit 6 self support force less than conduit joint-cutting microcheilia limit 7 like this, be convenient to its smooth distortion, form opening.
The present invention is provided with a conduit joint-cutting owing to depart from catheter center's axial plane on catheter wall, and it is a potential two way valve, and the conduit joint-cutting has the effect of two-way conduit valve, imports and exports as the infusion medicinal liquid, can form effective vent, makes things convenient for the infusion medicinal liquid.The present invention is rational in infrastructure, and is easy to use, and infusion medicinal liquid controllability is good, can effectively avoid conduit to stop up.
Claims (1)
1. a peripheral vein is inserted central venous catheter, comprise conduit, airtight needleless infusion medicinal liquid joint, inlying catheter is connected with airtight needleless infusion medicinal liquid joint by connecting device, it is characterized in that departing from the catheter wall catheter center's axial plane and be provided with a conduit joint-cutting, said conduit joint-cutting departs from the distance of catheter center's axial plane between the 0.2-0.6 millimeter, the both sides of conduit joint-cutting form conduit joint-cutting big lip limit and conduit joint-cutting microcheilia limit, also are provided with a groove along axis on the pipe inner wall of the big lip of conduit joint-cutting limit one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101320579A CN101785897B (en) | 2010-03-25 | 2010-03-25 | Peripherally inserted central catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101320579A CN101785897B (en) | 2010-03-25 | 2010-03-25 | Peripherally inserted central catheter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101785897A CN101785897A (en) | 2010-07-28 |
| CN101785897B true CN101785897B (en) | 2011-12-14 |
Family
ID=42529362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101320579A Active CN101785897B (en) | 2010-03-25 | 2010-03-25 | Peripherally inserted central catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101785897B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103705996A (en) * | 2014-01-07 | 2014-04-09 | 山东威高集团医用高分子制品股份有限公司 | Peripheral vein transfusion catheter |
| CN106861034B (en) * | 2017-03-27 | 2024-08-23 | 郑州迪奥医学技术有限公司 | Low resistance three-way valve for catheter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2232287Y (en) * | 1995-06-09 | 1996-08-07 | 四川康科生物材料制品有限责任公司 | Medicine liquid conducting tube for implantation administration device cabable of preventing blood reflux |
| CN2880135Y (en) * | 2006-01-26 | 2007-03-21 | 青岛大学医学院附属医院 | Tube wall opening type venosus catheter |
| CN201631868U (en) * | 2010-03-25 | 2010-11-17 | 山东威高集团医用高分子制品股份有限公司 | Peripherally vein inserted central venous catheter |
-
2010
- 2010-03-25 CN CN2010101320579A patent/CN101785897B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101785897A (en) | 2010-07-28 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |