CN108354618B - Visual blood taking needle - Google Patents
Visual blood taking needle Download PDFInfo
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- CN108354618B CN108354618B CN201810402985.9A CN201810402985A CN108354618B CN 108354618 B CN108354618 B CN 108354618B CN 201810402985 A CN201810402985 A CN 201810402985A CN 108354618 B CN108354618 B CN 108354618B
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- 210000004369 blood Anatomy 0.000 title claims abstract description 231
- 239000008280 blood Substances 0.000 title claims abstract description 231
- 230000000007 visual effect Effects 0.000 title claims abstract description 24
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 34
- 239000010935 stainless steel Substances 0.000 claims abstract description 34
- 230000000149 penetrating effect Effects 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- 210000001503 joint Anatomy 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 4
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 238000010241 blood sampling Methods 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 description 7
- 210000003743 erythrocyte Anatomy 0.000 description 4
- 210000003462 vein Anatomy 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 3
- 230000005779 cell damage Effects 0.000 description 3
- 208000037887 cell injury Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 102000015081 Blood Coagulation Factors Human genes 0.000 description 1
- 108010039209 Blood Coagulation Factors Proteins 0.000 description 1
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010018910 Haemolysis Diseases 0.000 description 1
- 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 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003114 blood coagulation factor Substances 0.000 description 1
- 229940019700 blood coagulation factors Drugs 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008588 hemolysis Effects 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150389—Hollow piercing elements, e.g. canulas, needles, for piercing the skin
- A61B5/150396—Specific tip design, e.g. for improved penetration characteristics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150412—Pointed piercing elements, e.g. needles, lancets for piercing the skin
- A61B5/150419—Pointed piercing elements, e.g. needles, lancets for piercing the skin comprising means for capillary action
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150412—Pointed piercing elements, e.g. needles, lancets for piercing the skin
- A61B5/150427—Specific tip design, e.g. for improved penetration characteristics
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Hematology (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dermatology (AREA)
- Manufacturing & Machinery (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to a visual blood taking needle, which solves the technical problems of large blood returning chamber, undefined indicating process, low speed, waste of blood and low blood sampling accuracy of the visual blood taking needle in the prior art. The invention provides a visual blood taking needle which is provided with a transparent needle seat and a stainless steel needle tube with needle points at two ends, wherein a blood return chamber is provided with a blood return tube and a lower blood return chamber, and the blood return tube and the lower blood return chamber are enclosed into an inverted T shape; the stainless steel needle tube is fixedly and hermetically connected with the two ends of the needle seat respectively, and a gap is arranged between the stainless steel needle tube and the blood return tube; a blood return hole is arranged on the stainless steel needle tube in the blood return tube in a penetrating way, and the blood return hole is communicated with the blood return tube; the side wall of the filling chamber is provided with a vent hole in a penetrating way, and the vent hole is communicated with the outside; the filling chamber is also internally provided with a filter element, the filter element is filled in the filling chamber, and the filter element is made of a material which can be ventilated and is sealed when being inflated when being dried. The invention is widely applied to the field of medical appliances.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a visual blood taking needle.
Background
The blood taking needle with the function of blood return can be used for an operator to judge whether blood taking of a puncture blood vessel is successful or not in an intuitive mode, so that fuzzy subjective judgment of relying on feeling in the original blood taking operation is avoided, the working efficiency and the blood taking success rate are effectively improved, and the pain of a patient is reduced. However, the existing visible blood return blood taking needle still has the defects that: the process of obtaining the indication by returning blood after puncturing the product with a simpler part of structure is not clear and rapid enough, thereby preventing the improvement of the blood sampling work efficiency. To clearly observe the blood return, the observation cavity needs to be arranged to be large enough to reduce the influence caused by the pressure change, so that the volume of the needle seat is far larger than that of a common blood taking needle. However, when the observation cavity of the blood return blood taking needle is increased, the vibration rotation amplitude of the collected blood observation cavity is increased, so that a great deal of red blood cells are damaged to cause hemolysis or the activity of a blood coagulation factor to be reduced, and errors are caused to the final blood detection result.
At present, a blood return room of a blood return vein blood taking needle is large, and although the blood return room is convenient to observe, after the blood taking of the blood taking needle is finished, the vein pressure of a patient compresses the air in the blood return room of the blood taking needle, so that when the blood taking needle is pulled out of vein blood, the compressed air rebounds, and the residual blood in the needle tube flows out from a needle point to generate a dripping phenomenon. The shed blood is extremely prone to cross-infection in hospitals. In addition, the cavity of the blood return chamber consumes the vacuum degree of the inner part of the vacuum blood collection tube, so that the blood collection amount of the first vacuum blood collection tube is obviously insufficient, and the accuracy of partial detection results is affected. In principle, blood flows into the blood collection tube through the needle tube, but the inner cavity of the existing blood return needle is relatively large, the blood enters the cavity and flows into the blood collection tube through the rotational flow, and quantitative blood remains in the cavity after the blood collection is finished, so that the blood is wasted. At present, when the volume of the blood return chamber is too small, the blood flow condition of the blood taking needle cannot be obviously observed, and a visual effect cannot be achieved. So a blood return needle with small blood return chamber and obvious visual effect is urgently needed at present.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the visual blood taking needle which has the advantages of simple composition structure, scientific and reasonable principle, small blood return chamber, clear and rapid indicating process and remarkably improved accuracy of blood taking samples, and the blood taking chamber is remarkably reduced in volume according to the capillary principle.
The technical scheme adopted for solving the technical problems is as follows:
a visual blood taking needle is provided with a transparent needle seat and a stainless steel needle tube with needle points at two ends, wherein the needle seat is provided with a puncture end needle seat and a butt joint end needle seat, a hollow blood return chamber is arranged in the puncture end needle seat, a blood return tube is arranged at the upper part of the blood return chamber, a lower blood return chamber is arranged at the lower part of the blood return chamber, and the blood return tube and the lower blood return chamber are enclosed into an inverted T shape; the puncture end needle seat and the butt end needle seat are assembled and connected to form a hollow filling chamber, and the filling chamber is communicated with the lower blood return chamber; the upper end of the stainless steel needle tube sequentially passes through the filling chamber, the blood return chamber at the lower end and the blood return tube and passes through the upper end of the puncture needle seat to form a puncture needle tube; the lower end of the stainless steel needle tube passes through the lower end of the butt joint end needle seat to form a butt joint end needle tube; the stainless steel needle tube is fixedly connected with the two ends of the needle seat in a sealing way, and a gap is arranged between the stainless steel needle tube and the blood return tube; a blood return hole is arranged on the stainless steel needle tube in the blood return tube in a penetrating way, and the blood return hole is communicated with the blood return tube; the side wall of the filling chamber is provided with a vent hole in a penetrating way, and the vent hole is communicated with the outside; the filling chamber is also internally provided with a filter element, the filter element is filled in the filling chamber, and the filter element is made of a material which can be ventilated and is sealed when being inflated when being dried.
Preferably, a boss is arranged at the top of one end, connected with the puncture end needle seat, of the butt-joint end needle seat, a butt-joint end needle hole penetrating through the butt-joint end needle seat is arranged in the center of the boss, and the stainless steel needle tube penetrates through the butt-joint end needle hole.
Preferably, the middle part of the filter element is provided with a central hole in a penetrating way, and the boss penetrates through the central hole.
Preferably, the boss is a circular boss; the filter element is of an annular structure provided with a central hole, and the diameter of the central hole is slightly larger than that of the boss; the diameter of the filter element is slightly smaller than the diameter of the filling chamber.
Preferably, the upper and lower edges of the filling chamber are provided with a gap, respectively.
Preferably, the filling chamber has a diameter greater than the diameter of the lower flashback chamber.
Preferably, the assembly connection mode can be welding, bonding, threaded connection or interference fit together.
Preferably, the vent holes are radially distributed along the hub.
Preferably, the filter element is made of ultra-high molecular weight polyethylene material.
Preferably, the needle seat is made of transparent plastic material.
The invention has the beneficial effects that: the invention provides the visual blood taking needle which has the advantages of simple composition structure, scientific and reasonable principle, small blood returning chamber, obvious and rapid indicating process and obviously improved accuracy of blood taking samples, and the blood volume is obviously reduced.
(1) Compared with the prior art, the volume of the blood return chamber is obviously reduced, the degree of red blood cell damage caused by waste and rotation of blood in the blood return chamber or the observation chamber is effectively reduced, and the pain of people in blood collection is reduced; meanwhile, the blood return chamber, the filling chamber and the filter element are ingenious in design, when the filter element plugs the vent hole, the collected blood sample directly passes through the stainless steel needle tube progress blood collection tube, and the blood sample entering the blood return chamber cannot enter the blood collection tube, so that the accuracy of collecting the blood sample is remarkably improved, and reliable guarantee is provided for final detection of the blood sample.
(2) The filter element is made of a material which can be ventilated and is inflated and sealed when being in contact with liquid, and when the filter element is used at the beginning, the blood return chamber is communicated with the outside through the vent hole, and blood can quickly and effectively enter the blood return chamber by utilizing the capillary principle, so that the indicating process is clear and quick.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic view of the front view of the penetration end hub of fig. 1;
fig. 3 is a schematic view of a bottom view of the penetration end hub of fig. 1;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
fig. 5 is a schematic view of the front view of the docking hub of fig. 1;
fig. 6 is a schematic diagram of a top view of the docking hub of fig. 1;
FIG. 7 is a B-B cross-sectional view of FIG. 6;
FIG. 8 is a schematic illustration of a front view of the cartridge of FIG. 1;
fig. 9 is a schematic diagram of a top view of the cartridge of fig. 1.
The marks in the figure: 1. the needle seat at the puncture end, the needle seat at the butt end, the blood return tube, the lower blood return chamber, the gap, the filling chamber, the stainless steel needle tube, the puncture end needle tube, the butt end needle hole, the blood return hole, the vent hole, the filter element, the boss, the central hole and the gap.
Detailed Description
The invention will be further described with reference to the drawings and specific examples to aid in understanding the context of the invention. The method used in the invention is a conventional production method unless specified; the raw materials used, if not specified, are all conventional commercial products.
As shown in fig. 1 to 9, the visible blood taking needle provided by the invention is provided with a transparent plastic needle seat and a stainless steel needle tube 5 with needle points at two ends; the needle seat is provided with a puncture end needle seat 1 and a butt joint end needle seat 2, a hollow blood return chamber is arranged in the puncture end needle seat 1, a blood return tube 31 is arranged at the upper part of the blood return chamber, a lower end blood return chamber 2 is arranged at the lower part of the blood return chamber, and the blood return tube 31 and the lower end blood return chamber 2 form an inverted T-shaped blood return chamber; the puncture end needle seat 1 is in sealing connection with the butt end needle seat 2 through welding; the puncture end needle seat 1 and the butt end needle seat 2 are assembled to form a hollow filling chamber 4, and the filling chamber 4 is communicated with the lower blood return chamber 2. The upper end of the stainless steel needle tube 5 sequentially passes through the filling chamber 4, the blood return chamber 2 at the lower end and the blood return tube 31 at the lower end and passes through the two ends of the needle seat to form a puncture end needle tube 6; the lower end of the stainless steel needle tube 5 passes through the butt joint end needle seat 2 to form a butt joint end needle tube 7; the stainless steel needle tube 5 is fixedly and hermetically connected with the two ends of the needle seat through welding, and a gap 33 is arranged between the stainless steel needle tube 5 and the blood return tube 31, so that blood can conveniently flow into the blood return chamber 2 from the blood return tube 31.
A blood return hole 8 is arranged on the stainless steel needle tube 5 positioned in the blood return tube 31 in a penetrating way, and the blood return hole 8 is communicated with the blood return tube 31; the side wall of the filling chamber 4 is penetrated with a vent hole 9, the vent hole 9 is distributed along the radial direction of the needle seat, and the vent hole 9 can ensure that the air in the blood return tube 31, the blood return chamber 2 at the lower end and the filling chamber 4 is discharged from the vent hole 9. The filling chamber 4 is also internally provided with a filter element 10, the filter element 10 is filled in the filling chamber 4, and the filter element 10 is made of ultra-high molecular weight polyethylene material, so that the filter element 10 has the performances of ventilation and blood expansion sealing during drying. A boss 11 is arranged at the top of one end of the butt joint end needle seat 2 connected with the puncture end needle seat 1, and the stainless steel needle tube 5 penetrates through the boss 11; the middle part of the filter element 10 is provided with a central hole 12 in a penetrating way, and a boss 11 penetrates through the central hole 12.
The blood sample collection using the visual blood collection needle of the present invention mainly comprises three processes: firstly, before the visual blood taking needle is used for taking blood, the butt joint end needle tube 7 is plugged, the puncture end needle tube 6 is subjected to venipuncture, and the blood taking needle tube sequentially passes through the blood return hole 8, the blood return tube 31, the lower blood return chamber 2, the filling chamber 4, the filter element 10 with the internal ventilation and the vent hole 9, is communicated with the outside to the greatest extent while ensuring the blood taking detection accuracy, and can obviously improve the blood return speed during blood sample collection and the speed for sealing the vent hole 9. Secondly, when the visual blood taking needle is used for taking blood of a vein, the pressure of venous blood, the capillary principle and the negative pressure of a vacuum blood taking tube are adopted, a blood sample sequentially enters the blood return tube 31, the lower blood return chamber 2 and the filling chamber 4 after reaching the blood return hole 8 along the needle tube 6 at the puncture end, finally, the blood return tube is contacted with the filter element 10, the filter element 10 is inflated and sealed when contacting with blood, the vent hole 9 is completely blocked, the filter element 10 tightly surrounds the boss 11, and air in the blood return tube 31, the lower blood return chamber 2 and the filling chamber 4 can be completely discharged from the vent hole 9, so that the tightness of the whole blood return chamber and the filling chamber 4 is ensured. The blood flowing condition in the blood returning chamber and the filling chamber 4 can be clearly seen in the process, and meanwhile, the volumes of the blood returning chamber and the filling chamber 4 are reduced to the greatest extent, so that the waste of blood is reduced, and the pain feeling of people in blood sampling is reduced. Thirdly, when the filter element 10 is inflated and sealed with blood to completely block the vent hole 9, the blood cannot flow out from the blood return hole 8, the butt-joint end needle tube 7 is communicated with the blood collection tube, the blood directly passes through the stainless steel needle tube 5 and rapidly enters the blood collection tube through the butt-joint end needle tube 7, the venous blood directly enters the vacuum blood collection tube through the stainless steel needle tube 5, and blood related project detection is carried out after sample collection is completed. The blood of final collection need not pass through the back blood room, and when effectively avoiding using current visual blood taking needle, blood is rotatory to cause red blood cell damage in the back blood room to and effectively avoid the filling material to the error of the blood sampling that the absorption of blood caused, thereby show the degree of accuracy that improves the collection blood, thereby also provide the assurance for the degree of accuracy that improves final blood testing result, have showing practicality.
As shown in fig. 5 to 9, preferably, the boss 11 is a circular boss, the center of the boss 11 is provided with a butt end pinhole 71 penetrating through the butt end needle seat 2, and the stainless steel needle tube 5 penetrates through the butt end pinhole 71; the filter element 10 is of an annular structure provided with a central hole 12, and the diameter of the central hole 12 is slightly larger than that of the boss 11; the diameter of the filter element 10 is slightly smaller than the diameter of the filling chamber 4; the diameter of the filling chamber 4 is larger than that of the bottom of the lower blood return chamber 2; simultaneously filter core 10 and filling room 4 top edge and bottom edge are equipped with space 13 respectively, and furthest's and external being linked together when guaranteeing blood sampling detection accuracy degree, improve the speed of blood circulation, namely stainless steel needle tubing 5 and return blood room and filling room 4 in gaseous quick getting rid of, simultaneously quick with the air vent 9 of external intercommunication block up, make the needle file inside form airtight environment, blood can get into the heparin tube through stainless steel needle tubing 5 more quick smooth in the blood sampling process, true blood sampling process is quick, accurate, furthest's reduction blood loss.
The invention also provides a matched rubber blood blocking sleeve for the butt-joint end needle tube 7, the butt-joint end needle tube 7 is plugged before use, the rubber blood blocking sleeve is opened in use to enable blood to flow into the blood collection tube, and the butt-joint end needle tube 7 is plugged after use to seal the blood, so that the pollution caused by the outflow of residual blood is prevented.
The volume of the blood return chamber is obviously reduced, and the blood return tube 31 has high slender visualization degree, so that the size of the needle seat can be the same as that of a needle seat of a common blood taking needle, the blood return tube can be matched with a common safety needle holder for use, and after the visual blood taking needle is used, the needle head of the blood taking needle is protected, and is convenient to collect, so that the secondary damage of the needle head to a human body is avoided.
Compared with the prior art, the volume of the blood return chamber is obviously reduced, the degree of red blood cell damage caused by waste and rotation of blood in the blood return chamber or the observation chamber is effectively reduced, and the pain of people in blood collection is reduced; meanwhile, due to the ingenious design of the blood return chamber, the filling chamber 4 and the filter element 10, when the filter element 10 plugs the vent hole 9, the collected blood sample directly passes through the stainless steel needle tube 5 progress blood collection tube, the accuracy of collecting the blood sample is remarkably improved, and reliable guarantee is provided for final detection of the blood sample. The filter element 10 is made of a material which can be ventilated and is inflated and airtight when being in contact with liquid, and when the filter element is used at the beginning, the blood return chamber is communicated with the outside through the vent hole 9, and blood can quickly and effectively enter the blood return chamber by utilizing the capillary principle, so that the indication process is clear and quick.
The existing blood return needle has a relatively large blood return chamber, blood enters the chamber and flows into the blood collection tube through swirling flow, and after blood collection, quantitative blood remains in the blood return needle chamber to cause blood waste, and about 0.3mL of blood is wasted; preferentially, when the blood for observing the visual blood return needle of the invention is about 0.1ml, the visual effect is remarkable, the blood entering the blood return chamber can not enter the blood collection tube any more, only the blood is observed and separated from the detected blood until the blood collection is finished, and the current requirement of the blood return needle with small blood return chamber and obvious visual effect is met.
The foregoing is merely exemplary of the present invention, and for example, the filter element 10 may be made of any material that is air-permeable and liquid-swellable and airtight when dried; the puncture-end needle seat 1 and the butt-end needle seat 2 can be welded, bonded, or connected by threads, or interference fit together, and the like, the stainless steel needle tube 5 is fixedly connected with the two ends of the needle seat in a sealing way through bonding, sealing and fixing connecting pieces, and the like, and the volume of the needle seat can be manufactured according to actual needs, so that the visual blood taking needle can be realized.
However, the foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, as all changes and modifications that may be made in accordance with the present invention shall fall within the scope of the invention.
Claims (4)
1. The visual blood taking needle is provided with a transparent needle seat and a stainless steel needle tube with needle points at two ends, wherein the needle seat is provided with a puncture end needle seat and a butt joint end needle seat, and a hollow blood return chamber is arranged in the puncture end needle seat; the puncture end needle seat and the butt end needle seat are assembled and connected to form a hollow filling chamber, and the filling chamber is communicated with the lower blood return chamber; the upper end of the stainless steel needle tube sequentially passes through the filling chamber, the lower blood return chamber and the blood return tube and passes through the upper end of the puncture end needle seat to form a puncture end needle tube; the lower end of the stainless steel needle tube passes through the lower end of the butt joint end needle seat to form a butt joint end needle tube; the stainless steel needle tube is respectively and fixedly connected with the two ends of the needle seat in a sealing way, and a gap is arranged between the stainless steel needle tube and the blood return tube; a blood return hole is formed in the stainless steel needle tube in the blood return tube in a penetrating manner, and the blood return hole is communicated with the blood return tube; the side wall of the filling chamber is provided with a vent hole in a penetrating way, and the vent hole is communicated with the outside; a filter element is arranged in the filling chamber, the filter element is filled in the filling chamber, and the filter element is made of a material which can be ventilated and is sealed when being inflated when being in contact with liquid during drying; the top of one end, connected with the puncture end needle seat, of the butt joint end needle seat is provided with a boss, the center of the boss is provided with a butt joint end needle hole penetrating through the butt joint end needle seat, the stainless steel needle tube penetrates through the butt joint end needle hole, the middle part of the filter element is provided with a central hole in a penetrating way, the boss penetrates through the central hole, and the boss is a circular boss; the filter element is of an annular structure provided with a central hole, and the diameter of the central hole is slightly larger than that of the boss; the diameter of the filter element is slightly smaller than that of the filling chamber, gaps are respectively formed in the upper edge and the lower edge of the filter element and the upper edge and the lower edge of the filling chamber, the diameter of the filling chamber is larger than that of the lower blood return chamber, and the assembly connection mode is welding, bonding, threaded connection or interference fit.
2. The visual blood lancet of claim 1, wherein said vent holes are radially disposed along said hub.
3. The visual blood lancet of claim 1, wherein the filter element is made of ultra-high molecular weight polyethylene material.
4. The visual blood lancet of claim 1, wherein the hub is a transparent plastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402985.9A CN108354618B (en) | 2018-04-28 | 2018-04-28 | Visual blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402985.9A CN108354618B (en) | 2018-04-28 | 2018-04-28 | Visual blood taking needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108354618A CN108354618A (en) | 2018-08-03 |
| CN108354618B true CN108354618B (en) | 2024-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810402985.9A Active CN108354618B (en) | 2018-04-28 | 2018-04-28 | Visual blood taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108354618B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115919301A (en) * | 2021-09-27 | 2023-04-07 | 上海移宇科技股份有限公司 | Analyte detection device installation unit |
| CN116421185B (en) * | 2023-04-14 | 2023-09-29 | 保定泰鑫德医疗器械制造有限公司 | Arterial trace blood sampling device and manufacturing method of blood vessel thereof |
| CN117281514A (en) * | 2023-11-14 | 2023-12-26 | 江苏采纳医疗科技有限公司 | Visible blood return blood taking needle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101926649A (en) * | 2010-09-03 | 2010-12-29 | 威海鸿宇医疗器械有限公司 | Visible blood-back blood taking needle |
| CN102160793A (en) * | 2011-03-08 | 2011-08-24 | 成都普什医药塑料包装有限公司 | Dripping-proof backflow-blood-observable venous blood taking needle |
| CN103099627A (en) * | 2011-11-11 | 2013-05-15 | 温州市贝普科技有限公司 | Blood taking needle capable of enabling returning blood to be seen |
| CN204581301U (en) * | 2015-01-29 | 2015-08-26 | 山东新华安得医疗用品有限公司 | The straight type blood taking needle of visual blood back |
| CN206239425U (en) * | 2016-07-27 | 2017-06-13 | 河北鑫乐医疗器械科技股份有限公司 | A kind of blood taking needle |
| CN208958143U (en) * | 2018-04-28 | 2019-06-11 | 威海赛威医疗科技有限公司 | A kind of visual blood taking needle |
-
2018
- 2018-04-28 CN CN201810402985.9A patent/CN108354618B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101926649A (en) * | 2010-09-03 | 2010-12-29 | 威海鸿宇医疗器械有限公司 | Visible blood-back blood taking needle |
| CN102160793A (en) * | 2011-03-08 | 2011-08-24 | 成都普什医药塑料包装有限公司 | Dripping-proof backflow-blood-observable venous blood taking needle |
| CN103099627A (en) * | 2011-11-11 | 2013-05-15 | 温州市贝普科技有限公司 | Blood taking needle capable of enabling returning blood to be seen |
| CN204581301U (en) * | 2015-01-29 | 2015-08-26 | 山东新华安得医疗用品有限公司 | The straight type blood taking needle of visual blood back |
| CN206239425U (en) * | 2016-07-27 | 2017-06-13 | 河北鑫乐医疗器械科技股份有限公司 | A kind of blood taking needle |
| CN208958143U (en) * | 2018-04-28 | 2019-06-11 | 威海赛威医疗科技有限公司 | A kind of visual blood taking needle |
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| CN108354618A (en) | 2018-08-03 |
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