CN215653102U - Plastic steel needle with better puncture using effect - Google Patents
Plastic steel needle with better puncture using effect Download PDFInfo
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- CN215653102U CN215653102U CN202122403900.9U CN202122403900U CN215653102U CN 215653102 U CN215653102 U CN 215653102U CN 202122403900 U CN202122403900 U CN 202122403900U CN 215653102 U CN215653102 U CN 215653102U
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- puncture
- needle
- lower liquid
- steel needle
- plastic
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 62
- 239000010959 steel Substances 0.000 title claims abstract description 62
- 230000000694 effects Effects 0.000 title claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 238000000034 method Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a plastic steel needle with better puncture using effect, which comprises a needle seat, an inner steel needle and an outer plastic needle, wherein the inner steel needle is arranged in the outer plastic needle, and the inner steel needle and the outer plastic needle are fixedly connected with the needle seat; the outer plastic needle comprises a needle seat connecting part, a puncture connecting part and a puncture lower liquid part, wherein a puncture conical surface and a puncture blade surface are symmetrically arranged on the puncture lower liquid part respectively, the puncture conical surface and the puncture blade surface are arranged in a crossed and adjacent mode, and a lower liquid hole is formed in the puncture conical surface; the inner steel needle penetrates through the puncture lower liquid part extending out of the outer plastic needle, and an air inlet inclined hole is formed in the end part. The structural design of the utility model ensures that the puncture effect of the outer plastic needle is better, thereby reducing the puncture force application of the integral plastic steel needle and facilitating the use.
Description
Technical Field
The utility model relates to the technical field of medical tools, in particular to a plastic steel needle with better puncture using effect.
Background
The transfusion system is a commonly used medical apparatus, wherein the plastic steel needle is an indispensable part in the transfusion system, as shown in figure 1, the plastic steel needle comprises an inner steel needle 21 and an outer plastic needle 22, the end part of the outer plastic needle is provided with a liquid discharge hole, the inner steel needle 21 is arranged in the outer plastic needle and extends out of the end part of the outer plastic needle 22 to form a puncture air inlet part 25, and the puncture air inlet part is provided with an air inlet hole; the outer plastic needle 22 is provided with a puncture connecting part 23 and a puncture lower liquid part 24, the puncture connecting part 23 and the puncture lower liquid part 24 of the outer plastic needle 22 and the puncture air inlet part 25 of the inner steel needle 21 form a whole plastic steel needle puncture needle body, the total length of the whole plastic steel needle puncture needle body is 28 +/-1 mm in medical regulations, and the puncture connecting part 23 of the outer plastic needle 22 is 15mm in length.
In the prior art, in order to improve the puncture effect, an air inlet hole on an inner steel needle puncture air inlet part is arranged on the side surface, and the mode of arranging the side surface of the air inlet hole needs to ensure that the puncture air inlet part of the inner steel needle extending out of an outer plastic needle has enough length; the structure is found in clinical use that the whole puncture force application of the plastic steel needle cannot be reduced, but the puncture force of the outer plastic needle can be influenced, so that the whole puncture use of the plastic steel needle is influenced, and the strength of the inner steel needle puncture air inlet part is reduced by arranging the side surface of the steel needle air inlet hole in the other surface, so that the puncture use is influenced; therefore, there is a need to improve the above-mentioned drawbacks of the plastic steel needle.
Disclosure of Invention
The utility model aims to solve the problems in the background technology and provides a plastic steel needle with better puncture using effect.
In order to solve the technical problems, the technical scheme of the utility model is as follows: a plastic steel needle with better puncture use effect comprises a needle seat, an inner steel needle and an outer plastic needle, wherein the inner steel needle is arranged in the outer plastic needle, and the inner steel needle and the outer plastic needle are fixedly connected with the needle seat; the outer plastic needle comprises a needle seat connecting part, a puncture connecting part and a puncture lower liquid part, wherein a puncture conical surface and a puncture blade surface are symmetrically arranged on the puncture lower liquid part respectively, the puncture conical surface and the puncture blade surface are arranged in a crossed and adjacent mode, and a lower liquid hole is formed in the puncture conical surface; the inner steel needle penetrates through the puncture lower liquid part extending out of the outer plastic needle, and an air inlet inclined hole is formed in the end part.
In the plastic steel needle with better puncture using effect, the puncture blade surface comprises an upper oblique blade surface and a lower oblique blade surface, and an arc-shaped transitional connecting surface is arranged between the upper oblique blade surface and the lower oblique blade surface.
In the plastic steel needle with better puncture using effect, the inner side wall corresponding to the puncture conical surface is provided with the assembling and positioning boss, and the end part of the assembling and positioning boss is connected with the straight lower liquid hole.
In the plastic steel needle with better puncture using effect, the end part of the assembly positioning lug boss adjacent to the lower liquid hole is provided with a sideslip inclined plane.
In the plastic steel needle with better puncture using effect, the side surfaces of the lower liquid hole are respectively provided with the lower liquid inclined plane, so that the lower liquid hole is in an externally opened horn mouth shape.
The utility model has the following beneficial effects:
under the condition that the medical specified lengths of the whole puncture needle body of the plastic steel needle and the puncture connecting part of the plastic steel needle are not changed, the length of the lower liquid part punctured by the outer plastic needle is lengthened; meanwhile, the puncture drainage part of the outer plastic needle is symmetrically provided with a puncture conical surface and a puncture blade surface, the puncture conical surface and the puncture blade surface are designed, and the puncture conical surface and the puncture blade surface are arranged in a crossed and adjacent mode, so that the puncture effect of the outer plastic needle is better, the puncture force application of the whole plastic steel needle is reduced, and the use is convenient.
The structure design of the utility model enables the length of the outer plastic needle for puncturing the lower liquid part to be lengthened, thereby maximizing the distance between the lower liquid hole on the punctured lower liquid part and the air inlet inclined hole at the end part of the inner steel needle, and being beneficial to the lower liquid of the lower liquid hole.
The assembly auxiliary structure is arranged in the liquid discharging part punctured by the outer plastic needle, so that the positioning of the inner steel needle in the automatic assembly process is facilitated, the inner steel needle is effectively prevented from obliquely penetrating into the liquid discharging hole to influence the automatic production, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a conventional structure;
FIG. 2 is a perspective view of the present invention;
FIG. 3 is a perspective view of the outer mold needle of the present invention;
FIG. 4 is a perspective view of the outer mold needle of the present invention in another orientation;
fig. 5 is a perspective cross-sectional view of the outer plastic needle of the present invention.
Detailed Description
The utility model is further elucidated with reference to the accompanying drawings.
Referring to fig. 2 to 5, the present invention provides a plastic steel needle with better puncture using effect, which comprises a needle base 1, an inner steel needle 2 and an outer plastic needle 3, wherein the inner steel needle 2 is arranged in the outer plastic needle 3, and the inner steel needle and the outer plastic needle are fixedly connected with the needle base 1; the outer plastic needle 3 comprises a needle seat connecting part 4, a puncture connecting part 5 and a puncture lower liquid part 6, wherein a puncture conical surface 7 and a puncture blade surface 8 are symmetrically arranged on the puncture lower liquid part 6 respectively, the puncture conical surface 7 and the puncture blade surface 8 are arranged in a crossed and adjacent mode and are in arc-shaped chamfer transitional connection, and a lower liquid hole 9 is formed in the puncture conical surface 7; the inner steel needle 2 penetrates through a puncture lower liquid part 6 of the outer plastic needle 3 and is provided with an air inlet inclined hole 10 at the end part, and preferably, the direction of the air inlet inclined hole 10 is arranged corresponding to one puncture conical surface 7.
The air inlet inclined hole 10 is arranged at the end part of the inner steel needle 2, so that the length occupied by the inner steel needle 2 extending out of the end part of the lower liquid puncture part 6 is reduced, and as the total length of the whole puncture needle body of the plastic steel needle and the length of the puncture connecting part of the plastic steel needle are not changed in the medical use specification, the length of the outer plastic needle 3 puncturing the lower liquid puncture part 6 is lengthened through the structural design, so that the distance between the air inlet inclined hole 10 and the lower liquid puncture hole 9 is larger, and the lower liquid puncture is facilitated; under the prerequisite of the length extension of outer plastic needle 3 puncture lower liquid portion 6, simultaneously again under the puncture lower liquid portion 6 respectively the symmetry alternately adjacent establish be equipped with puncture conical surface 7, puncture blade face 8 for the puncture effect of outer plastic needle 3 is better, thereby reduces the puncture application of force of plastic steel needle whole use, facilitates the use.
Furthermore, the piercing edge face 8 comprises an upper inclined edge face 11 and a lower inclined edge face 12, an arc-shaped transitional connecting face 13 is arranged between the upper inclined edge face 11 and the lower inclined edge face 12, and the piercing edge face 8 is structurally designed to enable the piercing lower liquid portion 6 to have better piercing force.
Furthermore, an assembly positioning boss 14 is arranged on the inner side wall corresponding to the puncture conical surface 7, the end part of the assembly positioning boss 14 is connected with the position of the direct lower liquid hole 9, and a side sliding inclined plane 15 is arranged at the end part of the assembly positioning boss 14 adjacent to the lower liquid hole 9; when carrying out interior steel needle 2 and the automatic equipment of outer needle 3 of moulding, the assembly positioning boss 14 and the inclined plane 15 that sideslips that set up can prevent effectively that interior steel needle 2 from penetrating down in the liquid hole 9 in the slope and influence automated production, are favorable to the location of interior steel needle among the automated assembly process, improve production efficiency.
Furthermore, the side of the lower liquid hole 9 is respectively provided with a lower liquid inclined plane 16, so that the lower liquid hole 9 is in an outward-opening horn mouth shape, and the design shape of the lower liquid hole 9 is a narrow and long large horn mouth, thereby ensuring the lower liquid and reducing the surface tension generated by the liquid inlet hole and the liquid.
The plastic steel needle with better puncture using effect provided by the embodiment of the utility model is described in detail, a specific example is applied in the text to explain the principle and the implementation mode of the utility model, and the description of the embodiment is only used for helping to understand the technical scheme disclosed by the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (5)
1. A plastic steel needle with better puncture use effect comprises a needle seat, an inner steel needle and an outer plastic needle, wherein the inner steel needle is arranged in the outer plastic needle, and the inner steel needle and the outer plastic needle are fixedly connected with the needle seat; the method is characterized in that: the outer plastic needle comprises a needle seat connecting part, a puncture connecting part and a puncture lower liquid part, wherein a puncture conical surface and a puncture blade surface are symmetrically arranged on the puncture lower liquid part respectively, the puncture conical surface and the puncture blade surface are arranged in a crossed and adjacent mode, and a lower liquid hole is formed in the puncture conical surface; the inner steel needle penetrates through the puncture lower liquid part extending out of the outer plastic needle, and an air inlet inclined hole is formed in the end part.
2. The plastic steel needle with better puncture use effect according to claim 1, characterized in that: the puncture blade surface comprises an upper oblique blade surface and a lower oblique blade surface, and an arc-shaped transition connecting surface is arranged between the upper oblique blade surface and the lower oblique blade surface.
3. The plastic steel needle with better puncture use effect according to claim 1, characterized in that: and an assembling and positioning boss is arranged on the inner side wall corresponding to the puncture conical surface, and the end part of the assembling and positioning boss is connected with the straight lower liquid hole.
4. The plastic steel needle with better puncture use effect according to claim 3, characterized in that: the end part of the assembly positioning boss adjacent to the lower liquid hole is provided with a side sliding inclined plane.
5. The plastic steel needle with better puncture use effect according to claim 4, characterized in that: the side surfaces of the lower liquid holes are respectively provided with a lower liquid inclined plane to enable the lower liquid holes to be in an externally opened horn mouth shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122403900.9U CN215653102U (en) | 2021-10-08 | 2021-10-08 | Plastic steel needle with better puncture using effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122403900.9U CN215653102U (en) | 2021-10-08 | 2021-10-08 | Plastic steel needle with better puncture using effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215653102U true CN215653102U (en) | 2022-01-28 |
Family
ID=79967468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122403900.9U Active CN215653102U (en) | 2021-10-08 | 2021-10-08 | Plastic steel needle with better puncture using effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215653102U (en) |
-
2021
- 2021-10-08 CN CN202122403900.9U patent/CN215653102U/en active Active
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