Improved special puncture needle for hemodialysis fistula

Abstract

The invention discloses an improved special puncture needle for hemodialysis fistula. The improved special puncture needle comprises a blood sampling needle head, a needle handle, a needle handle connecting tube, a saccule, a needle tube and a needle tube connecting seat, wherein the needle handle is arranged between the blood sampling needle and the needle handle connecting tube, a guiding-out pipeline for communicating the blood sampling needle head and the needle handle connecting tube is arranged in the needle handle, the saccule is provided with a first opening and a second opening, the first opening and the needle handle connecting tube are connected for forming a whole, the second opening and the needle tube are connected for forming a whole, the back end of the needle tube is connected with the front end of the needle tube connecting seat, and a connecting-in opening is formed in the back end of the needle tube connecting seat. During the implementation, through extruding the saccule, when the blood sampling needle head is inserted into the vein blood vessel of a patient, blood in the vein blood vessel of the patient can be easily guided out, in addition, whether the blood sampling needle head is inserted into the vein blood vessel of the patient or not can be conveniently judged, when the blood sampling needle head is pulled out from the vein blood vessel of the patient, the blood in the vein blood vessel of the patient cannot overflow, the blood cannot be remained on the needle point of the blood sampling needle head, and further, the use effect of the improved special puncture needle is good.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a special puncture needle for hemodialysis internal fistula with improved structure. Background technique [0002] Hemodialysis internal fistula puncture needle, as the name suggests, is a puncture needle specially used for hemodialysis for patients. The hemodialysis internal fistula puncture needle in the prior art is connected to the end of the infusion tube for ordinary injections for patients. The structure of the puncture needle is similar, and it mainly includes a blood collection needle connected in sequence, a needle handle, a needle tube and a needle tube connector, and the corresponding needle tube is provided with a flow-limiting clip. When doing hemodialysis, although it has been widely used, it still has many defects and deficiencies in the process of use. [0003] Specifically, on the one hand, before hemodialysis, when the medical staff takes the corresp...

AI Technical Summary

Problems solved by technology

[0003] Specifically, on the one hand, before hemodialysis, when the medical staff takes the corresponding hemodialysis internal fistula puncture needle, the needle tube connector at the end is easily contaminated due to exposure, and during operation, the hands of the medical staff It is also easier to touch the inner tube wall of the corresponding needle tube connector, so that it is contaminated with the bacteria carried by the hands of the medical staff, and then, when doing hemodialysis, it is easy to cause cross infection. On the other hand, after the hemodialysis is completed, the When the needle of the corresponding internal fistula puncture needle is pulled out from the patient's venous blood vessel, the residual blood at the corresponding needle is likely to overflow, causing a small amount of spilled blood to remain on the patient's skin surface or bed sheet, so that it is easy to cause the patient's venous blood vessel infection, Moreover, it is easy to cause misunderstanding or fear of patients, especially children and the elderly, and there is a risk of blood-borne occupational exposure to medical staff, and there is a possibility of cross-infection

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