CN211327425U - Central venous puncture needle - Google Patents
Central venous puncture needle Download PDFInfo
- Publication number
- CN211327425U CN211327425U CN201922121209.4U CN201922121209U CN211327425U CN 211327425 U CN211327425 U CN 211327425U CN 201922121209 U CN201922121209 U CN 201922121209U CN 211327425 U CN211327425 U CN 211327425U
- Authority
- CN
- China
- Prior art keywords
- needle
- steel wire
- puncture
- guide steel
- inclined plane
- 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.)
- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 210000003462 vein Anatomy 0.000 claims abstract description 19
- 238000005452 bending Methods 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000008280 blood Substances 0.000 abstract description 10
- 210000004369 blood Anatomy 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 210000004204 blood vessel Anatomy 0.000 description 4
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 229960002897 heparin Drugs 0.000 description 3
- 229920000669 heparin Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- NNJVILVZKWQKPM-UHFFFAOYSA-N Lidocaine Chemical compound CCN(CC)CC(=O)NC1=C(C)C=CC=C1C NNJVILVZKWQKPM-UHFFFAOYSA-N 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001631 haemodialysis Methods 0.000 description 1
- 230000000322 hemodialysis Effects 0.000 description 1
- 230000000004 hemodynamic effect Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 210000004731 jugular vein Anatomy 0.000 description 1
- 229960004194 lidocaine Drugs 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 206010033675 panniculitis Diseases 0.000 description 1
- 235000016236 parenteral nutrition Nutrition 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 210000004304 subcutaneous tissue Anatomy 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Images
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- Media Introduction/Drainage Providing Device (AREA)
Abstract
The utility model discloses a central vein puncture needle, which comprises a guide steel wire and a needle body used for placing the guide steel wire, wherein the needle body comprises a needle seat and a hollow needle tube connected at the tail end of the needle seat, one end of the needle tube, which is far away from the needle seat, is integrally formed with a needle point inclined plane with an inclined plane opening, the needle tube comprises a main tube and a plurality of auxiliary tubes, and the plurality of auxiliary tubes surround the main tube; this application centers on around being responsible for through a plurality of auxiliary canals, venous blood draws back along the auxiliary canal when the design of auxiliary canal can guarantee the puncture, be responsible for in center department, can guarantee that puncture in-process venous draw back unobstructed not mistiming, even the whole inclined plane of the needle point of pjncture needle leaves the vein lumen in incompletely, because be responsible for the center at the needle tubing, it is higher to be responsible for the probability of keeping somewhere in the vein lumen, more do benefit to and put into the guide wire, increase the smooth and easy nature that the guide wire was put into, thereby, increase the success rate and the security that the pipe was put in to central vein puncture, save the puncture time, the totality reduces the risk of central vein puncture complication.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to central vein puncture needle.
Background
Central venous puncture catheterization is a common invasive operation in clinic and is commonly used for parenteral nutrition, fluid infusion, hemodynamic detection, hemodialysis and the like. The specific operation is mature, and the market has a common central venipuncture package. Currently, the specific operation of central venipuncture catheterization is usually realized by a steel wire guide implantation method (Seldinger technology):
adopting different positions according to the puncture part, such as a head low supine position (Trendelenburg position) of the internal jugular vein;
secondly, disinfecting the skin of the puncture part and laying an aseptic towel;
thirdly, wearing sterile gloves;
0.5 to 1 percent of lidocaine is used for local infiltration anesthesia;
adopting a puncture needle or trocar to carry out venipuncture, and withdrawing venous blood after penetrating into a vein;
sixthly, fixing the puncture needle and inserting a guide steel wire; if a trocar is used, firstly, the trocar is pulled out, the cannula is kept in the central vein, a guide steel wire is inserted along the cannula, and the trocar is pulled out; when the guide steel wire is difficult to insert, the guide steel wire cannot be inserted forcibly;
seventhly, expanding tissues including skin, subcutaneous tissues and central veins by using an expander along the guide steel wire;
(viii) inserting a catheter: taking a corresponding catheter, filling heparin normal saline in each cavity of the catheter, and inserting the catheter into a central vein along a guide steel wire;
ninthly, drawing out a guide steel wire;
checking whether blood flow in each cavity of the catheter is unobstructed at the saline;
However, in the fifth operation, it is often difficult to withdraw the venous blood because the needle tip bevel position of the puncture needle and the direction of the needle tip bevel (note: the bevel of the needle tip is not conical but is inclined to the side) are not proper; even if the venous blood is unobstructed, the guide wire is difficult to insert in the sixth operation.
Therefore, the application provides a central venous puncture needle, which aims to solve the problems that the direction of the inclined plane of the needle point of the puncture needle cannot be accurately determined, the puncture positioning is difficult, the puncture positioning is smooth, and the guide wire is not smoothly placed in the puncture needle.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a central vein puncture needle, which can effectively solve the problems in the background technology.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a central vein pjncture needle, includes the guide steel wire and is used for putting into the needle body of guide steel wire, the needle body includes the needle file and connects at the terminal hollow needle tubing of needle file, the needle tubing keeps away from the one end integrated into one piece of needle file has inclined plane open-ended needle point inclined plane, the needle tubing includes that one is responsible for and a plurality of accessory tube, and is a plurality of the accessory tube is around being responsible for around.
Preferably, a central axis around which a plurality of the secondary pipes are formed coincides with a central axis of the primary pipe.
Preferably, the main tube is used in cooperation with the guide wire, and the inner diameter of the main tube is just enough to allow the guide wire to be inserted.
Preferably, the inner diameter of the secondary pipe is smaller than the diameter of the guide wire.
Preferably, the needle base is provided with a marking block for indicating the direction of the needle tip slope, and the marking block is positioned on one side of the needle base corresponding to the opening of the needle tip slope.
Preferably, the guide wire includes a long axis portion and a natural bending portion integrally formed at a distal end of the long axis portion, and the long axis portion is provided with a marking line indicating a bending direction of the natural bending portion.
Preferably, the marking line is disposed along a length direction of the entire guide wire, and the marking line is located on a side of the long shaft portion close to a curved inner side of the natural bending portion.
Preferably, the marking line is a strip-shaped groove.
Preferably, the marking line is a thin layer of paint.
Compared with the prior art, the utility model discloses following beneficial effect has: the central venous puncture needle is characterized in that a plurality of auxiliary tubes surround a main tube, the auxiliary tubes are designed to ensure that venous blood is pumped back along the auxiliary tubes during puncture, the main tube is arranged at the center, smooth venous pumping back can be ensured in the puncture process, even if the whole inclined plane of the needle point of the puncture needle is not completely reserved in a venous blood vessel cavity, the main tube is arranged at the center of the needle tube, the main tube has higher probability of being reserved in the venous blood vessel cavity, the main tube is more beneficial to being arranged with a guide steel wire, and the smoothness of the arrangement of the guide steel wire is improved, so that the success rate and the safety of the central venous puncture tube are improved, the puncture time is saved, and the risk of central venous puncture complications is generally;
by arranging the marking block, the direction of the needle tip slope of the puncture needle can be accurately determined, and the success rate of puncture positioning is increased;
through the setting of marking line, be convenient for make the crooked direction of head end of guide wire towards pjncture needle point inclined plane direction with the marking line definitely when putting into the guide wire, be favorable to increasing the success rate that the guide wire was put into.
Drawings
Fig. 1 is a schematic view of a central venipuncture needle according to the present invention;
fig. 2 is a schematic view of the needle body of the present invention;
FIG. 3 is a schematic view of a needle cannula according to the present invention;
FIG. 4 is a cross-sectional view of a needle cannula according to the present invention;
fig. 5 is a schematic view of the guide wire of the present invention.
In the figure: 1. a needle body; 2. guiding the steel wire; 3. a needle seat; 4. a needle tube; 5. a needle tip bevel; 6. marking a block; 7. a main pipe; 8. a secondary pipe; 9. a long shaft portion; 10. a natural bend; 11. and marking lines.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1-4, a central vein puncture needle comprises a guide steel wire 2 and a needle body 1 for placing the guide steel wire 2, wherein the needle body 1 comprises a needle base 3 and a hollow needle tube 4 connected to the tail end of the needle base 3, one end, far away from the needle base 3, of the needle tube 4 is integrally formed with a needle point inclined plane 5 with an inclined plane opening, the needle tube 4 comprises a main tube 7 and a plurality of auxiliary tubes 8, and the plurality of auxiliary tubes 8 surround the main tube 7 in a three-hundred-sixty degree mode.
Referring to fig. 4, the plurality of secondary pipes 8 are formed around a central axis coinciding with the central axis of the primary pipe 7.
Through adopting above-mentioned technical scheme, center around being responsible for 7 through a plurality of auxiliary canals 8, venous blood draws back along auxiliary canal 8 when the puncture can be guaranteed in the design of auxiliary canal 8, it locates at the center to be responsible for 7, can guarantee that puncture in-process vein draws back unobstructed untimely, even the whole inclined plane of the needle point inclined plane 5 of pjncture needle leaves the vein lumen in incomplete, because be responsible for 7 at the center of needle tubing 4, it is higher to be responsible for 7 probability of staying in the vein lumen, more do benefit to and put into guide wire 2, increase the smoothness nature that guide wire 2 put into, thereby, increase the success rate and the security that central vein puncture put into the pipe, save the puncture time, the overall risk that reduces central vein puncture complication.
With reference to fig. 1-5, the main tube 7 is used in conjunction with the guide wire 2, the main tube 7 having an inner diameter just sufficient to allow insertion of the guide wire 2.
Referring to fig. 3-4, the inner diameter of the secondary tube 8 is smaller than the diameter of the guide wire 2.
By adopting the technical scheme, the guide steel wire 2 is placed from the main pipe 7, and blood is pumped back from the auxiliary pipe 8.
Referring to fig. 2, a marking block 6 for indicating the direction of the needle tip bevel 5 is arranged on the needle base 3, the marking block 6 is positioned on one side of the needle base 3 corresponding to the opening of the needle tip bevel 5, the marking block 6 and the needle base 3 are integrally formed, the marking block 6 is not limited to an arrow bump, and the marking block 6 may also be a groove.
By adopting the technical scheme, the direction of the needle tip bevel 5 of the puncture needle can be accurately determined by the arrangement of the marking block 6, and the success rate of puncture positioning is increased.
Referring to fig. 5, the guide wire 2 includes a long axis portion 9 and a natural bending portion 10 integrally formed at a distal end of the long axis portion 9, and the long axis portion 9 is provided with a marking line 11 indicating a bending direction of the natural bending portion 10.
Referring to fig. 5, the marking line 11 is disposed along the entire length direction of the guide wire 2, and the marking line 11 is located on the side of the long shaft portion 9 close to the inside of the natural bending portion 10.
By adopting the technical scheme, the marking line 11 is arranged, so that the bending direction of the head end of the guide steel wire 2 can be clearly determined by the marking line 11 when the guide steel wire 2 is placed in, and the bending direction of the head end faces the direction of the needle tip inclined plane 5 of the puncture needle when the guide steel wire 2 is placed in, thereby being beneficial to increasing the success rate of placing the guide steel wire 2 in.
Referring to fig. 5, the marking line 11 may be an integrally formed strip-shaped groove, and the marking line 11 may also be a thin coating applied to the surface of the guide wire 2.
It should be noted that the utility model relates to a central venous puncture needle, when using, make a mark in the needle file 3 department of pjncture needle corresponding to 5 openings on the needle point inclined plane so that when puncturing, the mark of 3 departments of needle file clearly shows 5 opening directions on the needle point inclined plane, thereby does benefit to taking out of venous blood. The needle tube 4 is constructed by a main tube 7 and a plurality of sub-tubes 8, wherein the main tube 7 is located at the center of the needle tube 4, and the plurality of sub-tubes 8360 degrees surround the main tube 7, which is designed for facilitating the insertion of the guide wire 2 without affecting the venous blood withdrawal. The diameter of the main pipe 7 just can allow to put into the guide steel wire 2, and the diameter of the auxiliary pipe 8 is far less than the diameter of the guide steel wire 2, the design purpose of the auxiliary pipe 8 is to ensure the venous blood evacuation when puncturing, the main pipe 7 ensures that the venous evacuation is unobstructed and has no time in the puncturing process at the center, even if the whole inclined plane of the needle point inclined plane 5 of the puncturing needle is not completely left in the venous blood vessel cavity, because the main pipe 7 is at the center of the needle tube 4, the probability of remaining in the venous blood vessel cavity is higher, and the guide steel wire 2 is more favorably put into. The design optimization of the guide steel wire 2 is mainly to make a marking line 11 along the whole long axis part 9 of the guide steel wire 2 at the inner side of the natural bending part 10 of the guide steel wire 2, so that the marking line 11 is convenient to clearly identify the bending direction of the head end of the guide steel wire 2 when the guide steel wire 2 is embedded, and the bending direction of the head end is towards the direction of the needle tip inclined plane 5 of the puncture needle when the guide steel wire 2 is embedded, and the success rate of embedding the guide steel wire 2 is also increased.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.
Claims (9)
1. The utility model provides a central vein pjncture needle, includes guide steel wire (2) and needle body (1) that are used for imbedding guide steel wire (2), needle body (1) includes needle file (3) and connects at needle file (3) terminal hollow needle tubing (4), needle tubing (4) keep away from one end integrated into one piece of needle file (3) have inclined plane open-ended needle point inclined plane (5), its characterized in that: the needle tube (4) comprises a main tube (7) and a plurality of auxiliary tubes (8), and the plurality of auxiliary tubes (8) surround the main tube (7).
2. A central venipuncture needle according to claim 1, wherein: the center axis around which the plurality of secondary pipes (8) are formed coincides with the center axis of the primary pipe (7).
3. A central venipuncture needle according to claim 1, wherein: the main pipe (7) is matched with the guide steel wire (2) for use, and the inner diameter of the main pipe (7) can just allow the guide steel wire (2) to be placed in.
4. A central venipuncture needle according to claim 1, wherein: the inner diameter of the secondary pipe (8) is smaller than the diameter of the guide steel wire (2).
5. A central venipuncture needle according to claim 1, wherein: the needle base (3) is provided with a marking block (6) for indicating the direction of the needle point inclined plane (5), and the marking block (6) is positioned on one side of the needle base (3) corresponding to the opening of the needle point inclined plane (5).
6. A central venipuncture needle according to claim 1, wherein: the guide steel wire (2) comprises a long shaft part (9) and a natural bending part (10) integrally formed at the tail end of the long shaft part (9), and the long shaft part (9) is provided with a mark line (11) for indicating the bending direction of the natural bending part (10).
7. A central venipuncture needle according to claim 6, wherein: the marking line (11) is arranged along the length direction of the whole guide steel wire (2), and the marking line (11) is positioned on one side of the long shaft part (9) close to the bending inner side of the natural bending part (10).
8. A central venipuncture needle according to claim 7, wherein: the marking lines (11) are strip-shaped grooves.
9. A central venipuncture needle according to claim 7, wherein: the marking line (11) is a layer of thin coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922121209.4U CN211327425U (en) | 2019-11-28 | 2019-11-28 | Central venous puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922121209.4U CN211327425U (en) | 2019-11-28 | 2019-11-28 | Central venous puncture needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211327425U true CN211327425U (en) | 2020-08-25 |
Family
ID=72108036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922121209.4U Expired - Fee Related CN211327425U (en) | 2019-11-28 | 2019-11-28 | Central venous puncture needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211327425U (en) |
-
2019
- 2019-11-28 CN CN201922121209.4U patent/CN211327425U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200825 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |