CN214157470U - Puncture needle tube - Google Patents
Puncture needle tube Download PDFInfo
- Publication number
- CN214157470U CN214157470U CN202022582274.XU CN202022582274U CN214157470U CN 214157470 U CN214157470 U CN 214157470U CN 202022582274 U CN202022582274 U CN 202022582274U CN 214157470 U CN214157470 U CN 214157470U
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- Prior art keywords
- needle tube
- tube body
- concave surface
- head
- reduced
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Abstract
The puncture needle tube comprises a needle tube body, wherein a concave surface is circumferentially arranged on the outer surface of the needle tube body, the concave surface is arranged at the head of the needle tube body and is positioned in front of a notch formed in the side face of the needle tube body, and the depth of the concave surface gradually decreases from the head end of the needle tube body to the tail end of the needle tube body. The necking of the head of the catheter during assembly is lower than the outer surface of the needle tube, so that a negative height difference is formed, the pause and contusion during puncture are reduced, the pain of a patient is reduced, and the occurrence of phlebitis is reduced.
Description
Technical Field
The utility model relates to a puncture needle tube.
Background
Referring to fig. 1, in a needle cannula 1 currently used in the market, since a neck 201 of a head of a catheter 2 is higher than an outer surface 101 of the needle cannula 1, a positive height difference D1 is formed between the two, which causes the following adverse effects during puncturing: firstly, the puncture resistance is big, and medical personnel have when operating to pause and frustrate and feel, and the operation is inconvenient, and secondly the painful sense of patient increases.
SUMMERY OF THE UTILITY MODEL
The utility model provides a puncture needle tube to above-mentioned problem.
The purpose of the utility model can be realized by the following technical scheme:
the puncture needle tube comprises a needle tube body, wherein a concave surface is circumferentially arranged on the outer surface of the needle tube body, and the concave surface is arranged at the head of the needle tube body and is positioned in front of a notch formed in the side face of the needle tube body.
Furthermore, the depth of the concave surface gradually decreases from the head end to the tail end of the needle tube.
Compared with the prior art, the beneficial effects of the utility model are that: the concave surface is formed on the outer surface of the needle tube, so that the necking of the head of the catheter is lower than the outer surface of the needle tube during assembly, a negative height difference is formed, the pause and contusion during puncture are reduced, the pain of a patient is reduced, and the occurrence of phlebitis is reduced.
Drawings
FIG. 1 is a schematic view of a prior art needle cannula and catheter assembly.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic view of the assembly of the present invention and a catheter.
The parts in the figures are numbered as follows:
1 needle tube
101 outer surface
102 concave surface
103 notch
2 guide tube
201 are necked down.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings to make it clear to those skilled in the art how to practice the invention. While the invention has been described in connection with its preferred embodiments, these embodiments are intended to be illustrative, and not to limit the scope of the invention.
Referring to fig. 2, the puncture needle tube comprises a needle tube 1, wherein a concave surface 102 is circumferentially arranged on an outer surface 101 of the needle tube 1, and the concave surface 102 is arranged at the head of the needle tube 1 and is positioned in front of a notch 103 formed in the side surface of the needle tube 1.
Wherein, the depth of the concave surface 102 gradually decreases from the head end to the tail end of the needle tube 1.
The structure of the needle tube 1 and the catheter during assembly is shown in fig. 3, the necking 201 of the catheter head is positioned in the concave surface 102 of the needle tube 1, so that the necking 201 of the catheter head is lower than the outer surface 101 of the needle tube 1 to form a negative height difference D2, and therefore, the pause and the bruise during the puncture operation are reduced, the pain of a patient is reduced, and the occurrence of phlebitis is reduced.
It should be noted that many variations and modifications of the embodiments of the present invention are possible, which are fully described, and are not limited to the specific examples of the above embodiments. The above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. In conclusion, the scope of the present invention should include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art.
Claims (2)
1. The puncture needle tube is characterized by comprising a needle tube, wherein a concave surface is circumferentially arranged on the outer surface of the needle tube, and the concave surface is arranged at the head of the needle tube and is positioned in front of a notch formed in the side surface of the needle tube.
2. The needle cannula of claim 1 wherein the depth of said concave surface tapers from the head end to the tail end of the needle cannula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022582274.XU CN214157470U (en) | 2020-11-10 | 2020-11-10 | Puncture needle tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022582274.XU CN214157470U (en) | 2020-11-10 | 2020-11-10 | Puncture needle tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214157470U true CN214157470U (en) | 2021-09-10 |
Family
ID=77599700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022582274.XU Active CN214157470U (en) | 2020-11-10 | 2020-11-10 | Puncture needle tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214157470U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112220538A (en) * | 2020-11-10 | 2021-01-15 | 贝普医疗科技有限公司 | Puncture needle tube |
-
2020
- 2020-11-10 CN CN202022582274.XU patent/CN214157470U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112220538A (en) * | 2020-11-10 | 2021-01-15 | 贝普医疗科技有限公司 | Puncture needle tube |
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| GR01 | Patent grant |