CN223516781U - A novel indwelling needle for hemodialysis - Google Patents
A novel indwelling needle for hemodialysisInfo
- Publication number
- CN223516781U CN223516781U CN202422558921.1U CN202422558921U CN223516781U CN 223516781 U CN223516781 U CN 223516781U CN 202422558921 U CN202422558921 U CN 202422558921U CN 223516781 U CN223516781 U CN 223516781U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- hemodialysis
- indwelling needle
- needle
- patient
- 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.)
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
- External Artificial Organs (AREA)
Abstract
本实用新型公开了一种新型血液透析用留置针，包括：内管道和外管道，所述外管道位于所述内管道外侧，所述外管道尺寸小于血管内径；所述内管道和外管道的近端分别与血液透析设备连接；所述内管道内部滑动设置有针芯。通过上述方式，本实用新型将透析的输入支路和输出支路组合在一起，在使用时，只需要利用一个透析用留置针在患者的血管上进行一次穿刺即可，解决了现有透析用留置针需要在透析输入端和输出端各使用一个透析留置针的问题，减少了患者的血管穿刺次数，减轻了患者的痛苦，并降低对血管的伤害。
This invention discloses a novel indwelling needle for hemodialysis, comprising: an inner conduit and an outer conduit, wherein the outer conduit is located outside the inner conduit and its size is smaller than the inner diameter of the blood vessel; the proximal ends of the inner and outer conduits are respectively connected to a hemodialysis device; a needle core is slidably disposed inside the inner conduit. Through this method, this invention combines the input and output branches of dialysis, requiring only one puncture of the patient's blood vessel using a single dialysis indwelling needle during use. This solves the problem of existing dialysis indwelling needles requiring separate needles at the input and output ends, reducing the number of vascular punctures for the patient, alleviating patient discomfort, and minimizing damage to the blood vessels.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a novel indwelling needle for hemodialysis.
Background
The indwelling needle for dialysis is a medical tool for infusion treatment by only indwelling a soft catheter in a blood vessel after the catheter and the needle core are punctured into the blood vessel together during dialysis and withdrawing the needle core after the catheter completely enters the blood vessel, so that the pain caused by repeated vascular puncture can be relieved and the damage to the blood vessel of a patient can be reduced. The existing puncture needle comprises a steel needle and a common indwelling needle, but both the steel needle and the common indwelling needle can be completed by puncturing the two needles. Generally, each patient needs to be treated for 3-4 times a week, 6-8 needles need to be penetrated in a week, 288-384 needles need to be penetrated in a year, great pain is brought to the patient and damage to blood vessels exists, blood vessels of dialysis patients are life lines of the patient, damage to the blood vessels needs to be reduced as much as possible while treatment is carried out, and related complications are further reduced, so that a better treatment purpose is achieved. Therefore, it is important to design a new type of indwelling needle for hemodialysis to reduce the puncture injury suffered by a patient during dialysis.
Disclosure of utility model
The utility model aims to provide a novel indwelling needle for hemodialysis, so as to reduce puncture injury to a patient in the dialysis process.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The novel indwelling needle for hemodialysis comprises an inner pipeline and an outer pipeline, wherein the outer pipeline is positioned at the outer side of the inner pipeline, and the size of the outer pipeline is smaller than the inner diameter of a blood vessel;
The proximal ends of the inner pipeline and the outer pipeline are respectively connected with hemodialysis equipment;
The inner pipe is internally provided with a needle core in a sliding way.
Preferably, the diameter of the inner pipeline is 1.4mm, and the diameter of the outer pipeline is 2mm.
Preferably, the outer pipe is provided with a plurality of side holes, and the side holes are annularly distributed on the side surface of the outer pipe.
Preferably, the distal end of the outer pipe is a wedge-shaped opening and is adhered to the outer wall of the inner pipe, and the proximal end of the outer pipe is adhered to the outer wall of the inner pipe.
Preferably, an output port is formed in the side face of the proximal end of the outer pipeline, and the output port is connected with the output pipeline.
Preferably, a hemostatic clip is disposed on the output tube.
Preferably, a hemostatic clip is disposed on the proximal end of the inner conduit.
The beneficial effects of the utility model are as follows:
(1) The novel indwelling needle for hemodialysis disclosed by the utility model is simple in overall structure and low in production cost, and can be used for puncturing a blood vessel of a patient only by using one indwelling needle for hemodialysis when being used, so that the problem that the existing indwelling needle for hemodialysis needs to use one indwelling needle for dialysis at the input end and the output end of dialysis respectively is solved, the vascular puncturing times of the patient are reduced, the pain of the patient is relieved, and the damage to the blood vessel is reduced.
(2) In the utility model, the side wall of the outer pipeline is provided with a plurality of side holes which are used as ports for blood to enter the outer pipeline, the side holes are distributed in a ring shape on the side surface of the outer pipeline, the blood circulation of dialysis is improved, and the occurrence of blockage is avoided.
(3) The distal end of the outer pipeline is provided with the wedge-shaped opening and is adhered to the outer wall of the inner pipeline, and the joint is in smooth connection, so that the friction damage to blood vessels is reduced.
Drawings
FIG. 1 is a schematic perspective view of a novel indwelling needle for hemodialysis according to the present utility model;
FIG. 2 is a schematic cross-sectional view of a novel hemodialysis needle;
The components in the drawings are marked as follows:
1. the catheter comprises an inner pipeline, an outer pipeline, 2-1 parts of a wedge-shaped port, 3 parts of a needle core, 4 parts of a side hole, 5 parts of an output pipeline, and 6 parts of a catheter seat.
Detailed Description
The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.
Examples:
this example describes a structure of a novel indwelling needle for hemodialysis.
As shown in figures 1 and 2, the novel indwelling needle for hemodialysis comprises an inner pipeline 1 and an outer pipeline 2, wherein the outer pipeline 1 is positioned outside the inner pipeline 2, the size of the outer pipeline 2 is smaller than the inner diameter of a blood vessel, in the embodiment, the diameter of the inner pipeline is 1.4mm, and the diameter of the outer pipeline is 2mm.
The proximal ends of the inner pipeline 1 and the outer pipeline 2 are respectively connected with hemodialysis equipment;
the inner pipe 1 is internally provided with a needle core 3 in a sliding way.
In this embodiment, the inner tubing 1 is connected to a venous line and the outer tubing 3 is connected to an arterial line and to respective hemodialysis apparatuses.
In this embodiment, the outer pipe 3 is provided with a plurality of side holes 4, and the side holes 4 are annularly distributed on the side surface of the outer pipe 3. Through the setting of a plurality of side openings, be favorable to improving the blood circulation of dialysis, avoid taking place to block up.
In this embodiment, the distal end of the outer pipe 2 is a wedge-shaped opening 2-1 and is adhered to the outer wall of the inner pipe 1, and the proximal end of the outer pipe 2 is adhered to the outer wall of the inner pipe 1. When in use, the outer pipeline with the side hole part enters the blood vessel under the action of the inner pipeline.
In this embodiment, an output port is formed on the side surface of the proximal end of the outer pipe 2, and the output port is connected to the output pipe 5, and the outer pipe 2 is communicated with the output pipe 5 through the output port. In order to facilitate the connection between the outer pipe and the output pipe at the output port, a pipe seat 6 is sleeved.
In this embodiment, a hemostatic clip is provided on the output tube 5, and a hemostatic clip is provided on the proximal end of the inner tube 1. In addition, luer connectors and luer caps are further arranged on the outer pipeline and the inner pipeline of the indwelling needle, and the structures and the connection modes of the luer connectors and the luer caps are technical means which are common to the person skilled in the art and are the prior art, so that the details are not repeated.
The utility model has the working principle that when hemodialysis is carried out, the retaining needle is held by hand, the tip of the needle core is penetrated into the arm blood vessel of a patient, the blood return condition is observed, then the needle core is pushed into the blood vessel, the inner pipeline enters the blood vessel along with the needle core, the outer pipeline also enters the blood vessel until the side holes on the outer catheter are positioned in the blood vessel, in the process, the hemostatic clips on the outer catheter and the inner catheter are clamped, the needle is withdrawn from the inner catheter, and finally the retaining needle is fixed with the arm of the patient by using a medical adhesive tape, and in the whole process, only one retaining needle is needed to be used for carrying out puncture on the arm of the patient, and one dialysis retaining needle is not needed to be used at the dialysis input end and the dialysis retaining needle at the output end, so that the blood vessel puncture times of the patient are reduced, and the pain of the patient is relieved.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (5)
1. The novel indwelling needle for hemodialysis is characterized by comprising an inner pipeline (1) and an outer pipeline (2), wherein the outer pipeline (2) is positioned outside the inner pipeline (1), and the size of the outer pipeline (2) is smaller than the inner diameter of a blood vessel;
the proximal ends of the inner pipeline (1) and the outer pipeline (2) are respectively connected with hemodialysis equipment;
a needle core (3) is slidably arranged in the inner pipeline (1);
the diameter of the inner pipeline (1) is 1.4mm, and the diameter of the outer pipeline (2) is 2mm;
A plurality of side holes (4) are formed in the outer pipeline (2), and the side holes (4) are annularly distributed on the side face of the outer pipeline (2).
2. The novel indwelling needle for hemodialysis according to claim 1, wherein the distal end of the outer tube (2) is a wedge-shaped opening and is adhered to the outer wall of the inner tube (1), and the proximal end of the outer tube (2) is adhered to the outer wall of the inner tube (1).
3. The novel indwelling needle for hemodialysis according to claim 1, which is characterized in that an output port is formed in the side face of the proximal end of the outer pipeline (2), and the output port is connected with the output pipeline (5).
4. A novel indwelling needle for hemodialysis according to claim 3, in which a hemostatic clip is provided on said output tube (5).
5. The novel indwelling needle for hemodialysis according to claim 1, wherein a hemostatic clip is arranged on the proximal end of the inner tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422558921.1U CN223516781U (en) | 2024-10-23 | 2024-10-23 | A novel indwelling needle for hemodialysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422558921.1U CN223516781U (en) | 2024-10-23 | 2024-10-23 | A novel indwelling needle for hemodialysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223516781U true CN223516781U (en) | 2025-11-07 |
Family
ID=97532508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422558921.1U Active CN223516781U (en) | 2024-10-23 | 2024-10-23 | A novel indwelling needle for hemodialysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223516781U (en) |
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2024
- 2024-10-23 CN CN202422558921.1U patent/CN223516781U/en active Active
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