CN222075201U - Blood collection needle and pipette - Google Patents
Blood collection needle and pipette Download PDFInfo
- Publication number
- CN222075201U CN222075201U CN202322705463.5U CN202322705463U CN222075201U CN 222075201 U CN222075201 U CN 222075201U CN 202322705463 U CN202322705463 U CN 202322705463U CN 222075201 U CN222075201 U CN 222075201U
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- Prior art keywords
- needle
- piston
- protective sleeve
- channel
- liquid
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- 239000008280 blood Substances 0.000 title claims abstract description 48
- 210000004369 blood Anatomy 0.000 title claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 62
- 230000001681 protective effect Effects 0.000 claims abstract description 52
- 238000001802 infusion Methods 0.000 claims description 4
- 238000010241 blood sampling Methods 0.000 description 13
- 239000000243 solution Substances 0.000 description 5
- 238000005213 imbibition Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 206010069803 Injury associated with device Diseases 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The utility model relates to the field of medical equipment, in particular to a blood collection puncture needle and a liquid suction device, wherein the blood collection puncture needle comprises a needle head and a protective sleeve, the needle head is provided with a liquid suction end and a liquid delivery end, the protective sleeve is arranged on the outer wall of the needle head and is arranged along the circumferential direction of the needle head, the protective sleeve encloses to form a containing cavity, the liquid suction end of the needle head is positioned in the containing cavity, and the liquid delivery end is positioned on the outer side of the protective sleeve. According to the utility model, the needle is arranged in the accommodating cavity of the protective sleeve, so that the needle is prevented from being exposed to hurt users, and the risk of puncture of the puncture needle to hurt the users is reduced.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to a blood sampling puncture needle and a liquid suction device.
Background
After venous blood collection is completed, the blood is stored in a flexible liquid storage pipeline, then the liquid storage pipeline is pierced by a blood collection puncture needle, and the blood is sucked for transfer, and enters a related test procedure.
In the process, the liquid suction device is provided with a structure similar to a piston, and moves in a channel arranged on the blood collection puncture needle to form a low-pressure cavity, so that blood flows in from a needle head of the blood collection puncture needle to finish blood extraction. However, in the related art, when the needle of the blood collection puncture needle punctures the liquid storage pipeline to suck liquid, the puncture needle is exposed to easily puncture the user, and especially when the blood to be tested contains viruses, the health of the punctured user can be seriously harmed.
Disclosure of utility model
The utility model mainly aims to provide a blood sampling puncture needle, which aims to prevent the needle from being exposed to hurt users and reduce the risk of puncture of the puncture needle to hurt the users by arranging the needle in a containing cavity of a protective sleeve.
The blood sampling puncture needle comprises a needle head and a protective sleeve, wherein the needle head is provided with a liquid suction end and a liquid delivery end, the protective sleeve is arranged on the outer wall of the needle head and is arranged along the circumferential direction of the needle head, the protective sleeve encloses to form a containing cavity, the liquid suction end of the needle head is positioned in the containing cavity, and the liquid delivery end is positioned on the outer side of the protective sleeve.
In an embodiment of the present utility model, the protective sleeve is provided with a clearance groove near the cavity opening of the accommodating cavity, and the clearance groove is disposed on any two sides of the protective sleeve and is communicated with the accommodating cavity.
In an embodiment of the utility model, the bottom wall of the protective sleeve is connected with the side wall fillets of any of the avoidance grooves.
In an embodiment of the utility model, a top wall of the avoidance slot is arc-shaped.
In one embodiment of the utility model, a liquid sucking channel and a piston channel are arranged in the needle, the liquid sucking channel is positioned in the accommodating cavity, and the piston channel is positioned on the outer side of the protective sleeve;
the liquid suction channel is communicated with the liquid suction end and the liquid infusion end, and the piston channel is communicated with the liquid suction channel.
In one embodiment of the utility model, the cross-sectional area of the aspiration channel increases gradually from the aspiration end toward the infusion end.
In one embodiment of the utility model, the inner diameter of the piston channel is greater than the inner diameter of the suction channel.
In an embodiment of the utility model, a connecting portion is disposed at an end of the needle away from the protective sleeve, and the connecting portion is disposed around an outer wall of the needle.
In one embodiment of the utility model, any two opposite sides of the connecting part are provided with connecting screw grooves.
The utility model further provides a liquid suction device which comprises a piston sleeve and a blood sampling puncture needle, wherein the piston sleeve comprises a piston rod and a piston, the piston rod is connected with the piston, and the piston is positioned in the piston channel.
In the technical scheme of the utility model, the blood taking puncture needle comprises a needle head and a protective sleeve, the protective sleeve is provided with an accommodating cavity with an opening, the needle head is provided with a liquid sucking end and a liquid conveying end, the protective sleeve is arranged on the outer wall of the needle head and is arranged along the circumferential direction of the needle head, the protective sleeve encloses to form the accommodating cavity, the liquid sucking end of the needle head is positioned in the accommodating cavity, the liquid conveying end of the needle head is positioned on the outer side of the protective sleeve, the blood taking puncture needle can be placed in a common medical sealing bag and cannot puncture the medical sealing bag, when the blood taking puncture needle is used by a person, the needle head of the blood taking puncture needle cannot directly contact a human body in the operation process of taking out and subsequent use, and the risk of the person used by the puncture needle is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of an embodiment of a lancet according to the present utility model;
fig. 2 is a cross-sectional view at A-A in fig. 1.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear are used in the embodiments of the present utility model) are merely for explaining the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
In order to achieve the above objective, as shown in fig. 1 and 2, the blood collection puncture needle according to the present utility model comprises a needle 10 and a protective cover 20, wherein the needle 10 has a fluid-sucking end 10A and a fluid-delivering end 10b, the protective cover 20 is disposed on the outer wall of the needle 10 and along the circumferential direction of the needle 10, the protective cover 20 encloses a receiving cavity 20A, the fluid-sucking end 10A of the needle 10 is disposed in the receiving cavity 20A, and the fluid-delivering end 10b is disposed outside the protective cover 20.
In this embodiment, the blood taking puncture needle includes the needle 10 and the protective sheath 20, the protective sheath 20 is equipped with one and has an open-ended accommodation chamber, when the blood taking is carried out to the person of using, the diapire of protective sheath 20 supports flexible stock solution pipeline, push down the blood taking puncture needle downwards, can make the needle 10 puncture this pipeline make imbibition end 10a get into in the pipeline, blood flows into needle 10 from the imbibition hole that is equipped with near imbibition end 10a and accomplishes blood collection, built-in needle 10 can place blood taking puncture needle in common medical seal bag, can not puncture medical seal bag, when using the person to use blood taking puncture needle, take out and in the operation of follow-up use, because blood taking puncture needle's needle 10 can not direct contact the human body, the risk of puncture needle injury user has been reduced.
The needle 10 is formed in an overall cone shape with a wide upper part and a thin lower part, a liquid sucking end 10A is arranged at the bottom part of the needle near the needle tip, blood to be extracted can be sucked into the needle 10 at the first time, a protective sleeve 20 is arranged on the outer wall of the middle part of the needle 10, the protective sleeve 20 is arranged along the circumference of the needle 10 and forms a containing cavity 20A with an opening, the protective sleeve 20 is in a cylinder shape, the protective sleeve 20 in the cylinder shape can help uniformly disperse the force applied on the protective sleeve 20, compared with other shapes such as square or rectangular, the cylinder shape can bear the force from all directions better, the stress concentration is reduced, and the cylinder shape is stronger and stable in structure and can provide enough strength and rigidity to protect the needle 10 inside from being damaged. The transfusion end 10b of the needle head 10 is positioned at the outer side of the protective sleeve 20 to realize the transportation and extraction of blood without affecting the basic blood sampling function of the blood sampling puncture needle.
In an embodiment of the present utility model, as shown in fig. 2, a space avoiding groove 20B is disposed on the protective sleeve 20 near the cavity opening of the accommodating cavity 20A, and the space avoiding groove 20B is disposed on any two sides of the protective sleeve 20 and is communicated with the accommodating cavity 20A.
In this embodiment, the inventor has a space avoidance groove 20B on each of two sides of the protective sleeve 20, where the space avoidance groove 20B penetrates through the outer wall of the outer sleeve and is communicated with the internal accommodating cavity 20A, so that the protective sleeve 20 forms a space avoidance space, and a part of the structure of the pipeline can be accommodated by using the space avoidance groove 20B, so that the needle 10 does not need to be pressed into the liquid storage pipeline by force when the blood sampling puncture needle is used, the problem of no circulation of blood is avoided, and meanwhile, the space avoidance groove 20B can also play a role in positioning, when the space avoidance groove 20B blocks the accommodating pipeline, the needle 10 can be aligned with the middle position of the pipeline, the needle 10 is prevented from sliding due to insertion distortion, and further hidden danger caused by the puncture of a user is avoided.
In one embodiment of the present utility model, as shown in FIG. 1, the bottom wall of the protective sleeve 20 is rounded to the side wall of any of the clearance slots 20B.
In this embodiment, the bottom wall of the protective sleeve 20 is connected with the side wall fillet of any one of the avoidance grooves 20B to form a round arc structure, so that the frictional wear of the protective sleeve 20 on the liquid storage channel is reduced when the blood sampling puncture needle is placed on the liquid storage channel, and meanwhile, the protective sleeve 20 with the fillet design avoids the problem of puncturing the liquid storage channel.
In one embodiment of the present utility model, as shown in fig. 1, the top wall of the avoidance slot 20B is configured as an arc.
In this embodiment, the top wall of the avoidance slot 20B is set to be arc-shaped, so that the protection sleeve 20 can be attached to the pipeline more, and because the flexible liquid storage pipeline for blood collection is flexible and cylindrical, the top wall of the avoidance slot 20B can be attached to the liquid storage pipeline to the greatest extent, the contact area between the avoidance slot 20B and the liquid storage pipeline is increased, the friction force between the avoidance slot 20B and the liquid storage pipeline is increased, the two are prevented from sliding, and the blood collection is facilitated.
In one embodiment of the present utility model, as shown in fig. 2, a liquid sucking channel 10A and a piston channel 10B are provided inside the needle 10, the liquid sucking channel 10A is located in the accommodating cavity 20A, and the piston channel 10B is located outside the protecting sleeve 20;
The pipetting channel 10A communicates with the pipetting end 10A and the infusion end 10B, and the piston channel 10B communicates with the pipetting channel 10A.
In this embodiment, the inside of the needle 10 is provided with a liquid sucking channel 10A and a piston channel 10B, the piston channel 10B is communicated with the liquid sucking channel 10A, the liquid sucking channel 10A is located in the accommodating cavity 20A by the lower structure of the needle 10, the liquid sucking channel 10A is communicated with the liquid sucking end 10A below and the liquid delivering end 10B above, the piston channel 10B is located in the upper structure of the needle 10, the liquid sucking channel 10A is located outside the accommodating cavity 20A, and the piston can be utilized to move in the piston channel 10B, so that a high-pressure or low-pressure environment is formed to complete blood injection or suction.
In one embodiment of the present utility model, as shown in FIG. 2, the cross-sectional area of the pipetting channel 10A increases gradually from the pipetting end 10A toward the pipetting end 10 b.
In this embodiment, the cross-sectional area of the fluid-sucking passage 10A gradually increases from the fluid-sucking end 10A toward the fluid-supplying end 10b to form a tapered space, the larger diameter of the upper end can accommodate more fluid or gas, the smaller diameter of the lower end can increase the flow rate and improve the flow efficiency, and at the same time, the friction force generated by the blood passing through the passage can be reduced due to the smaller diameter of the fluid-sucking end 10A, thereby reducing the pressure loss.
In one embodiment of the present utility model, as shown in FIG. 2, the inner diameter of the piston channel 10B is greater than the inner diameter of the suction channel 10A.
In this embodiment, the inner diameter of the piston channel 10B of the needle 10 is larger than the inner diameter of the liquid suction channel 10A in order to achieve smooth flow of blood and reduce liquid retention. The larger upper channel inner diameter can accommodate more blood as it is withdrawn or injected, allowing blood to enter or exit through the needle 10 more quickly. This reduces the stagnation and clogging of blood inside the needle 10, improves the fluidity of the blood, and improves the efficiency of the operation. In addition, the larger inner diameter of the piston channel 10B also reduces shear and drag forces on the blood, reducing damage and injury to the blood. The gradual decrease in the inside diameter of needle 10 also helps to form a better seal against leakage of blood from the needle 10 hub. Therefore, the design of the needle 10 with the larger inner diameter of the piston channel 10B and the smaller inner diameter of the liquid suction channel 10A can realize smooth flow of blood or liquid, reduce the risk of liquid retention and blockage, and improve the operation efficiency and safety.
In an embodiment of the present utility model, as shown in fig. 1, a connecting portion 101 is disposed at an end of the needle 10 away from the protective sleeve 20, and the connecting portion 101 is disposed around an outer wall of the needle 10.
In this embodiment, a connecting portion 101 is disposed at one end of the needle 10 far away from the protective sleeve 20, and the connecting portion 101 is integrally formed on the outer wall of the needle 10 through an injection molding process and is used for connecting the outside to fix the needle, so as to prevent the needle 10 from shaking during the blood sampling process to cause blood leakage and other problems.
In one embodiment of the present utility model, as shown in fig. 1, the connection portion 101 is provided with connection screw grooves 101c at any opposite sides thereof.
In this embodiment, the connecting grooves 101c are formed on any two opposite sides of the connecting portion 101, the connecting grooves 101c are set to have a standard connecting taper of 6:100, and the connecting grooves 101c can effectively avoid connection errors due to the problem of the connecting structure, and improve the connection stability.
The utility model also provides a liquid suction device which comprises a piston sleeve and a blood sampling puncture needle, wherein the piston sleeve comprises a piston rod and a piston, the piston rod is connected with the piston, the piston is positioned in the piston channel 10B, the piston is pushed to move in the piston channel 10B of the blood sampling puncture needle to complete blood collection, the specific structure of the blood sampling puncture needle refers to the embodiment, and the liquid suction device adopts all the technical schemes of all the embodiments, so that the liquid suction device has at least all the beneficial effects brought by the technical schemes of the embodiment and is not repeated herein.
The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).
Claims (10)
1. A blood collection needle, the blood collection needle comprising:
A needle (10), said needle (10) having a fluid-absorbing end (10 a) and a fluid-delivering end (10 b), and
The needle comprises a needle head (10), a protective sleeve (20), a liquid sucking end (10A) and a liquid delivering end (10 b), wherein the protective sleeve (20) is arranged on the outer wall of the needle head (10) and is arranged along the circumferential direction of the needle head (10), the protective sleeve (20) encloses to form a containing cavity (20A), the liquid sucking end (10A) of the needle head (10) is positioned in the containing cavity (20A), and the liquid delivering end (10 b) is positioned on the outer side of the protective sleeve (20).
2. The blood collection puncture needle according to claim 1, wherein the protective sleeve (20) is provided with a clearance groove (20B) near the cavity opening of the accommodating cavity (20A), and the clearance groove (20B) is arranged on any two sides of the protective sleeve (20) and is communicated with the accommodating cavity (20A).
3. The lancet according to claim 2, wherein the bottom wall of the protective sheath (20) is connected to the side wall rounded corners of any of the clearance grooves (20B).
4. The lancet according to claim 2, wherein a top wall of the clearance groove (20B) is formed in an arc shape.
5. The blood collection puncture needle according to any of claims 1 to 4, wherein a liquid suction channel (10A) and a piston channel (10B) are arranged inside the needle (10), the liquid suction channel (10A) is positioned in the accommodating cavity (20A), and the piston channel (10B) is positioned outside the protective sleeve (20);
The liquid suction channel (10A) is communicated with the liquid suction end (10A) and the liquid delivery end (10B), and the piston channel (10B) is communicated with the liquid suction channel (10A).
6. The lancet of claim 5, wherein the cross-sectional area of the aspiration channel (10A) increases gradually from the aspiration end (10A) toward the infusion end (10 b).
7. The lancet according to claim 5, wherein an inner diameter of the piston channel (10B) is larger than an inner diameter of the aspiration channel (10A).
8. The blood collection puncture needle according to any of claims 1 to 4, wherein a connecting part (101) is arranged at one end of the needle (10) far away from the protective sleeve (20), and the connecting part (101) is annularly arranged on the outer wall of the needle (10).
9. The lancet according to claim 8, wherein any opposite sides of the connecting portion (101) are provided with connecting screw grooves (101 c).
10. A pipette comprising a piston assembly and a blood collection spike according to any one of claims 1 to 9;
the piston sleeve comprises a piston rod and a piston, and the piston rod is connected with the piston;
The piston is located in the piston channel (10B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322705463.5U CN222075201U (en) | 2023-10-08 | 2023-10-08 | Blood collection needle and pipette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322705463.5U CN222075201U (en) | 2023-10-08 | 2023-10-08 | Blood collection needle and pipette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222075201U true CN222075201U (en) | 2024-11-29 |
Family
ID=93595053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322705463.5U Active CN222075201U (en) | 2023-10-08 | 2023-10-08 | Blood collection needle and pipette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222075201U (en) |
-
2023
- 2023-10-08 CN CN202322705463.5U patent/CN222075201U/en active Active
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