CN211658881U - Paediatrics blood purification pipe-line system - Google Patents
Paediatrics blood purification pipe-line system Download PDFInfo
- Publication number
- CN211658881U CN211658881U CN202020049296.7U CN202020049296U CN211658881U CN 211658881 U CN211658881 U CN 211658881U CN 202020049296 U CN202020049296 U CN 202020049296U CN 211658881 U CN211658881 U CN 211658881U
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- Prior art keywords
- cavity
- venous
- end access
- double
- blood
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- 239000008280 blood Substances 0.000 title claims abstract description 54
- 210000004369 blood Anatomy 0.000 title claims abstract description 54
- 238000000746 purification Methods 0.000 title claims abstract description 21
- 238000010241 blood sampling Methods 0.000 claims abstract description 16
- 210000003462 vein Anatomy 0.000 claims description 24
- 210000001367 artery Anatomy 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 7
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 229920004933 Terylene® Polymers 0.000 claims 1
- 238000001990 intravenous administration Methods 0.000 description 10
- 229920000728 polyester Polymers 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000002792 vascular Effects 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 206010033675 panniculitis Diseases 0.000 description 3
- 210000004304 subcutaneous tissue Anatomy 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 229920004934 Dacron® Polymers 0.000 description 2
- 230000004087 circulation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001631 haemodialysis Methods 0.000 description 2
- 230000000322 hemodialysis Effects 0.000 description 2
- 238000002615 hemofiltration Methods 0.000 description 2
- 230000001951 hemoperfusion Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 244000000010 microbial pathogen Species 0.000 description 2
- 238000002616 plasmapheresis Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 208000028399 Critical Illness Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000007012 clinical effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 210000003191 femoral vein Anatomy 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 210000004731 jugular vein Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000001321 subclavian vein Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- CEIZFXOZIQNICU-UHFFFAOYSA-N tenuazonic acid Chemical compound CCC(C)C1NC(=O)C(C(C)=O)=C1O CEIZFXOZIQNICU-UHFFFAOYSA-N 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 108700012359 toxins Proteins 0.000 description 1
- 210000001631 vena cava inferior Anatomy 0.000 description 1
- 210000002620 vena cava superior Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to the field of medical equipment, and discloses a pediatric blood purification pipeline system, which comprises a double-cavity venous catheter, a connecting piece communicated with one end of the double-cavity venous catheter, an arterial end access joint and a venous end access joint; a blood sampling cavity and a blood returning cavity which are relatively isolated are arranged in the double-cavity venous catheter along the length direction; the blood sampling cavity and the blood return cavity are respectively communicated with an arterial end access joint and a venous end access joint through the connecting pieces, the arterial end access joint and the venous end access joint are respectively communicated with an arterial end pipeline and a venous end pipeline of the blood purifier, a plurality of arterial end access openings communicated with the outside of the double-cavity venous catheter are arranged on the blood sampling cavity, and the arterial end access openings are not arranged on a straight line.
Description
Technical Field
The utility model relates to the field of medical equipment, specifically a paediatrics blood purification pipe-line system.
Background
Blood Purification (BP) refers to a treatment method for removing toxins, antibodies, immune complexes, excess water and other harmful substances in the body from the Blood through a non-renal route to correct the unbalanced internal environment of the body, and includes various BP techniques such as Hemodialysis (HD), Hemofiltration (HF), Plasmapheresis (PE), Hemoperfusion (HP) and hemorrhaging (BE). BP has been widely used in the rescue treatment of a variety of critically ill conditions in adults.
Central venous catheterization and establishment of a vascular access are the subjects and the bases for implementing BP, and children often choose subclavian veins, femoral veins or internal jugular veins to place a double-lumen venous catheter as the vascular access of the BP. The internal diameter of the central vein of the child is small (6.5-8.5 Fr double-lumen venous catheter is selected according to the weight), the vascular access is difficult to establish, and the bottleneck for restricting the development of BP technology of the child is formed.
The central venous catheter is placed in two paths: 1. arterial end access: the opening of the arterial access is located on the side wall of the distal end of the catheter (about 2-3 cm from the distal end of the catheter) and blood is withdrawn from the distal end of the central vein at BP. The junction of the arterial access is dark and slightly shorter in length than the venous access. 2. Venous end access: the opening of the venous-end access is centered on the distal end of the catheter, and blood is infused extracorporeally into the proximal end of the central vein in BP. The junction of the venous access is light colored and slightly longer than the arterial access.
In the conventional method for implementing BP, an arterial end pipeline and a venous end pipeline of a blood purifier are respectively connected with an arterial end access joint and a venous end access joint of a central venous catheter, so that an artificial extracorporeal circulation is established, and blood circularly flows in the blood purifier to achieve the aim of removing in-vivo toxin, antibody, immune complex, redundant moisture and other harmful substances.
The central vein of children (especially those with the weight of less than 10 kg) is small in inner diameter and small in blood volume, the embedded central venous catheter usually fills most of the space of the inner cavity of the whole blood vessel, and when the blood purifier operates, because the opening of the arterial end passage is positioned on the side wall of the far end of the catheter, the opening of the arterial end passage is tightly attached to the blood vessel wall due to negative pressure suction of the arterial end, so that blood cannot be smoothly pumped out, and BP cannot continue to be carried out.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a paediatrics blood purification pipe-line system to solve and propose in the above-mentioned background art: the problem that BP can not be continuously carried out due to the fact that blood can not be smoothly pumped out because an opening of an artery end passage clings to a blood vessel wall in the BP process occurs.
In order to achieve the above object, the utility model provides a following technical scheme: a pediatric blood purification pipeline system comprises a double-cavity venous catheter, a connecting piece communicated with one end of the double-cavity venous catheter, an arterial end access joint and a venous end access joint; a blood sampling cavity and a blood returning cavity which are relatively isolated are arranged in the double-cavity venous catheter along the length direction; two mutually independent channels are arranged in the connecting piece, a connecting pipe is arranged on each channel, the two connecting pipes are respectively communicated with an arterial end access joint and a venous end access joint, and the arterial end access joint and the venous end access joint are respectively communicated with an arterial end pipeline and a venous end pipeline of the blood purifier; the blood sampling cavity is provided with a plurality of artery end passage openings communicated with the outside of the double-cavity venous catheter, and the artery end passage openings are not arranged on a straight line parallel to the length direction of the blood sampling cavity.
Preferably, the end of the other end of the double-lumen venous catheter is provided with a first venous end access opening and a second venous end access opening; the first venous-end access opening is disposed just in the middle of the dual lumen venous catheter end and the second venous-end access opening is disposed on a side of the dual lumen venous catheter end.
Preferably, a needle is disposed within the first vein-end access opening; the front end of the needle extends out of the first venous-end access opening and the rear end extends out of the venous-end access junction.
Preferably, the double-cavity venous catheter is further provided with a polyester sleeve.
Preferably, a fixing ring is rotatably sleeved outside the connecting piece, and fixing lugs are arranged on two sides of the fixing ring.
Preferably, the arterial end access joint and the venous end access joint and the connecting pipe of the connecting piece are respectively provided with a liquid stopping clamp.
Compared with the prior art, the beneficial effects of the utility model are that:
1. this kind of paediatrics blood purification pipe-line system sets up a plurality of artery access openings on two-chamber venous catheter wall, avoids appearing artery access opening and hug closely the vascular wall and cause unable continuation blood sampling because of the negative pressure suction of artery end when blood purification machine operates, ensures the smooth completion of children BP.
2. This kind of paediatrics blood purification pipe-line system, the solid fixed ring that sets up makes the patient more convenient action after the operation, avoids leading to the kink and the jam of connecting pipe or two-chamber venous catheter because of improper action.
3. According to the pediatric blood purification pipeline system, the front end of the double-cavity venous catheter is provided with the puncture needle for puncturing the vein of a patient, so that the double-cavity venous catheter can be conveniently placed in the vein; the puncture needle is drawn out after the vein is penetrated, so that the vein is prevented from being accidentally injured when the catheter is pushed.
4. According to the pediatric blood purification pipeline system, the dacron sleeve is arranged on the double-cavity venous catheter, the dacron sleeve and subcutaneous tissues of a human body are enclosed to form a tight and seamless tissue, and infection of a child patient caused by pathogenic microorganisms entering a circulating system and local tissues through a wound formed by a BP (back propagation) is avoided.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the double-lumen intravenous catheter of the present invention;
fig. 3 is a schematic structural view of the double lumen intravenous catheter with the needle installed.
In the figure: 1. a dual lumen venous catheter; 11. a blood sampling cavity; 12. a blood returning cavity; 2. a connecting member; 3. an arterial end access fitting; 4. a venous-side access fitting; 5. an arterial end access opening; 6. a first vein-end access opening; 61. a second vein-end access opening; 7. a needle; 8. polyester sleeves; 9. a fixing ring; 91. fixing the ear; 10. liquid stopping clip.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 3, the pediatric blood purification tubing system of the present embodiment includes a dual-lumen intravenous catheter 1, a connector 2 communicating with one end of the dual-lumen intravenous catheter 1, an arterial end access connector 3, and a venous end access connector 4; a blood sampling cavity 11 and a blood returning cavity 12 which are relatively isolated are arranged in the double-cavity venous catheter 1 along the length direction; two mutually independent channels are arranged in the connecting piece 2, and the blood sampling cavity 11 and the blood return cavity 12 are respectively communicated with one channel; the other ends of the two channels are respectively connected with a connecting pipe, the two connecting pipes are respectively communicated with an arterial end access joint 3 and a venous end access joint 4, and the arterial end access joint 3 and the venous end access joint 4 are respectively communicated with an arterial end pipeline and a venous end pipeline of the blood purifier; a plurality of arterial end passage openings 5 communicated with the outside of the double-cavity venous catheter 1 are arranged on the blood sampling cavity 11, and the plurality of arterial end passage openings 5 are not arranged on a straight line parallel to the length direction of the blood sampling cavity 11; the plurality of mutually staggered arterial end access openings 5 are arranged, so that the phenomenon that the arterial end access openings are adsorbed on the vessel wall of a vein when in BP (back propagation) is avoided, and more than one arterial end access openings 5 can be ensured to continuously take blood; the arterial end access opening 5 may be disposed about the circumference of the double lumen intravenous catheter 1.
Further, the end of the other end of the double-lumen intravenous catheter 1 is provided with a first venous-end access opening 6 and a second venous-end access opening 61; the first venous end access opening 6 is provided in the middle of the end of the double lumen intravenous catheter 1 and the second venous end access opening 61 is provided on the side of the end of the double lumen intravenous catheter 1.
Further, a needle 7 is arranged in the first vein-end access opening 6; the front end of the needle 7 extends out of the first venous-end access opening 6, and the rear end extends out of the venous-end access connection 4; the puncture needle 7 is detachably arranged in the first vein end access opening 6 and is used for puncturing the vein of a patient so as to facilitate the placement of the double-cavity venous catheter into the vein; after the vein is penetrated, the puncture needle is drawn out through the tail end exposed out of the vein end access joint 4, so that the vein is prevented from being accidentally injured when the catheter is pushed.
Furthermore, the double-cavity venous catheter 1 is also provided with a polyester sleeve 8, the polyester sleeve 8 is enclosed between the double-cavity venous catheter 1 and the subcutaneous tissue of the human body, and the polyester is made of elastic materials and can block the gap between the double-cavity venous catheter 1 and the subcutaneous tissue of the human body to form a tight and seamless tissue, so that pathogenic microorganisms are prevented from entering a circulation system and causing infection of a child patient through a wound formed by BP.
Furthermore, a fixing ring 9 is rotatably sleeved outside the connecting piece 2, and fixing lugs 91 are arranged on two sides of the fixing ring 9; the fixing ring 9 is rotatably disposed outside the connector 2, and maintains the connection of the connection tube or the double lumen intravenous catheter during the adhesion and suturing processes without kinking and clogging.
Furthermore, the arterial end access joint 3 and the venous end access joint 4 are respectively provided with a liquid stopping clamp 10 on the connecting pipe of the connecting piece 2, and the liquid stopping clamps 10 can block the connecting pipe through the liquid stopping clamps when BP is interrupted, so that blood backflow is prevented.
The utility model discloses a theory of operation:
the end of the double lumen intravenous catheter 1 with the needle 7 is introduced through a large venous vessel to the superior vena cava or inferior vena cava. The artery end pipeline and the vein end pipeline of the blood purifier are respectively connected with the artery end access joint 3 and the vein end access joint 4 of the double-cavity venous catheter 1, the blood purifier is started, and BP treatment is started conventionally.
Reversely connecting the artery and vein end pipelines: when the blood purifying machine displays that the negative pressure at the arterial end is obviously increased and the blood sampling cavity 11 of the double-cavity venous catheter 1 can not smoothly pump blood, the blood purifying machine gives an alarm and automatically stops. At this time, the arteriovenous end line is immediately reversely connected with the arteriovenous end line by considering that the arterial access opening 5 is tightly attached to the vessel wall. At this time, the blood circulation of the connecting pipe is cut off by the liquid stopping clamp 10; respectively connecting an arterial end pipeline and a venous end pipeline of the blood purifier with a venous end access joint 4 and an arterial end access joint 3 in an exchange manner; at this time, blood is returned from the arterial access opening 5, and blood is collected from the first venous-end access opening 6 and the second venous-end access opening 61.
The blood purifier is started again, BP treatment is continued, and the blood pumping condition of the venous end passage of the double-cavity venous catheter 1 and the running condition of the blood purifier are closely observed.
It may theoretically occur that after the arteriovenous end line is reversely connected, the blood portion inputted from the arterial end access opening 5 is drawn out from the first venous end access opening 6 and the second venous end access opening 61, which affects the purification efficiency of BP. However, after practical application, the purification efficiency of BP after reverse connection is not obviously influenced. The BP treatment of 20 children with the weight less than 10kg is completed by applying a reverse connection arteriovenous end pipeline technology, the clinical effect is satisfactory, and the BP treatment has no obvious difference from the traditional connection mode in the aspects of clearing away vivotoxin, restoring electrolyte, acid-base balance and the like, and is worthy of popularization and application.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a paediatrics blood purification pipe-line system which characterized in that: comprises a double-cavity venous catheter (1), a connecting piece (2) communicated with one end of the double-cavity venous catheter (1), an artery end access joint (3) and a vein end access joint (4); a blood sampling cavity (11) and a blood return cavity (12) which are relatively isolated are arranged in the double-cavity venous catheter (1) along the length direction; two mutually independent channels are arranged in the connecting piece (2), a connecting pipe is arranged on each channel, the two connecting pipes are respectively communicated with the arterial end access joint (3) and the venous end access joint (4), and the arterial end access joint (3) and the venous end access joint (4) are respectively communicated with an arterial end pipeline and a venous end pipeline of the blood purifier; the blood sampling cavity (11) is provided with a plurality of arterial end passage openings (5) communicated with the outside of the double-cavity venous catheter (1), and the arterial end passage openings (5) are not arranged on a straight line parallel to the length direction of the blood sampling cavity (11).
2. The pediatric blood purification tubing system of claim 1, wherein: a first vein end access opening (6) and a second vein end access opening (61) are arranged on the end part of the other end of the double-cavity venous catheter (1); the first venous end access opening (6) is arranged in the middle of the end of the double-cavity venous catheter (1), and the second venous end access opening (61) is arranged on the side surface of the end of the double-cavity venous catheter (1).
3. The pediatric blood purification tubing system of claim 2, wherein: a puncture needle (7) is arranged in the first vein end access opening (6); the front end of the puncture needle (7) extends out of the first vein end access opening (6), and the rear end thereof extends out of the vein end access joint (4).
4. The pediatric blood purification tubing system of claim 1, wherein: the double-cavity venous catheter (1) is also provided with a terylene sleeve (8).
5. The pediatric blood purification tubing system of claim 1, wherein: the connecting piece (2) is externally sleeved with a fixing ring (9) in a rotating mode, and fixing lugs (91) are arranged on two sides of the fixing ring (9).
6. The pediatric blood purification tubing system of claim 1, wherein: and the arterial end access joint (3), the venous end access joint (4) and a connecting pipe of the connecting piece (2) are respectively provided with a liquid stopping clamp (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020049296.7U CN211658881U (en) | 2020-01-10 | 2020-01-10 | Paediatrics blood purification pipe-line system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020049296.7U CN211658881U (en) | 2020-01-10 | 2020-01-10 | Paediatrics blood purification pipe-line system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211658881U true CN211658881U (en) | 2020-10-13 |
Family
ID=72738938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020049296.7U Expired - Fee Related CN211658881U (en) | 2020-01-10 | 2020-01-10 | Paediatrics blood purification pipe-line system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211658881U (en) |
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2020
- 2020-01-10 CN CN202020049296.7U patent/CN211658881U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Guangming Inventor after: Ma Liqiang Inventor after: Huang Juan Inventor after: Wu Zaixin Inventor before: Chen Guangming |
|
| 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: 20201013 |