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CN-224207158-U - Needle core of dialysis indwelling needle and dialysis indwelling needle

CN224207158UCN 224207158 UCN224207158 UCN 224207158UCN-224207158-U

Abstract

The embodiment of the application provides a needle core of a dialysis indwelling needle and the dialysis indwelling needle, wherein the needle core of the dialysis indwelling needle comprises a blunt needle body, one end of the blunt needle body in the length direction is provided with a smooth and convex surface, and the blunt needle body is provided with a lumen and a runner hole communicated with the lumen. The needle head side of the needle core of the dialysis indwelling needle provided by the application is of a smooth and convex structure, and the round blunt needle point is adopted, so that the direct puncture damage to the blood vessel wall is reduced, the risk of needle puncture by medical staff is avoided, and the pain of puncture is reduced. The dialysis indwelling needle is suitable for conventional dialysis patients and hemodialysis patients with difficult conventional sharp needle puncture, such as dialysis patients with deeper blood vessels, shorter puncturable blood vessels, severe vascular bending or intolerance to pain, and dialysis patients needing self-puncture management under the future home dialysis development trend, and improves the treatment quality and medical experience of the dialysis patients.

Inventors

  • LIAN JIANWEI

Assignees

  • 广东百合医疗科技股份有限公司
  • 暨南大学附属顺德医院(佛山市顺德区第二人民医院、佛山市顺德区冯尧敬纪念医院)

Dates

Publication Date
20260508
Application Date
20241217

Claims (7)

  1. 1. The needle core of the dialysis indwelling needle is characterized by comprising a blunt needle body, wherein one end of the blunt needle body in the length direction is provided with a smooth and convex surface, and the blunt needle body is provided with a lumen and a runner hole communicated with the lumen; the blunt needle body comprises: A needle body having the lumen; The blunt tip is arranged at one end of the needle body along the length direction, covers the end opening of the needle body, is provided with the smooth convex surface, is provided with at least two runner holes, and is sequentially arranged at intervals along the circumferential direction of the needle body; wherein, the blunt end of the blunt needle body is of a solid structure.
  2. 2. The dialysis indwelling needle core according to claim 1, wherein said runner hole extends in a length direction of said needle body.
  3. 3. The dialysis indwelling needle hub according to claim 1, wherein said runner bore and said lumen transition smoothly.
  4. 4. The needle core of the dialysis indwelling needle according to claim 1, wherein three flow passage holes are provided on said blunt end, and each of said flow passage holes is provided at a sequential interval in the circumferential direction of said needle body.
  5. 5. The dialysis indwelling needle core according to any one of claims 1 to 4, wherein said blunt needle body is provided with scale marks, said scale marks being provided along a length direction of said blunt needle body.
  6. 6. The dialysis indwelling needle core according to claim 5, wherein said scale mark comprises a plurality of concave mark portions or a plurality of convex mark portions provided on an outer surface of said blunt needle body, each of said concave mark portions or each of said convex mark portions being provided at an interval in order along a length direction of said blunt needle body.
  7. 7. A dialysis indwelling needle, comprising: A cannula mount having a fluid passage; A hose connected to the cannula mount, the hose communicating with the fluid passage; The needle of any one of claims 1-6, a blunt needle body of the needle being capable of penetrating the fluid channel and the hose.

Description

Needle core of dialysis indwelling needle and dialysis indwelling needle Technical Field The application relates to the technical field of medical instruments, in particular to a needle core of a dialysis indwelling needle and the dialysis indwelling needle. Background Hemodialysis is one of the main treatments for end stage renal patients, the effectiveness of which depends largely on the quality of the vascular access and the technique of puncture. The dialysis treatment needs to meet the requirement that the puncture needle is inserted into the arterial end of the vascular access to lead out blood, and the blood is filtered by the dialyzer and then is punctured by the venous end of the vascular access to return to the patient, so that the access puncture is a basic premise of hemodialysis treatment. The evolution of dialysis needles reflects the continual progress of hemodialysis technology and the in-depth understanding of patient needs, in which there are mainly buttonhole blunt needle penetration technology and sharp needle penetration technology. Regarding the buttonhole blunt needle puncture technology, the same channel is required to be repeatedly punctured for a plurality of times through the sharp needle, so that a fixed scar tunnel is formed, after the scar tunnel is formed, the blunt needle is used for dialysis treatment through tunnel puncture, and the circular arc needle head of the blunt needle does not have cutting force and can easily enter a blood vessel along the established tunnel. The buttonhole blunt needle puncture technology can obviously reduce the related complications of internal fistula, effectively lighten the pain of patients, is simple and convenient to operate, can be used for automatically puncturing the patients, and caters to the great direction of the development of home dialysis. In summary, the principle of forming a dialysis grommet puncture tunnel is to repeatedly puncture at the same puncture point, angle and depth to form a subcutaneous tunnel, and then puncture along the tunnel with a blunt needle into the blood vessel, so as to reduce the damage to the blood vessel and related complications and prolong the service life of the arteriovenous fistula. The types and problems of the current clinical dialysis puncture technology are as follows: The sharp needle puncture technology and the sharp needle puncture technology have the problems that pain and psychological pressure of a patient are caused by puncture, vascular intima injury is possibly caused by sharp needle puncture, risk of stenosis and aneurysm formation is increased, the mobility of the patient is influenced by a sharp needle body made of stainless steel, and the treatment comfort of the patient is reduced. The sharp needle trocar puncturing technology and the sharp needle trocar puncturing problem are that blood vessels are easy to damage due to the adoption of the sharp needle trocar puncturing technology, the risk of hematoma formation is possibly increased, pain feeling of patients is obvious, and experience feeling of the patients is poor. Stainless steel influences the activity degree of the patient, reduces the treatment comfort degree of the patient, the metal blunt needle has a cutting inclined plane, the point of contact of the needle point is on the side wall of the tunnel during puncturing, a puncturing false road is easy to form in clinical operation, and the original tunnel is destroyed. In view of this, the present utility model has been proposed. Disclosure of utility model In order to solve one of the above technical drawbacks, an embodiment of the present application provides a core of a dialysis indwelling needle and a dialysis indwelling needle. The utility model adopts the following technical scheme: The first object of the application is to provide a needle core of a dialysis indwelling needle, which comprises a blunt needle body, wherein one end of the blunt needle body along the length direction is provided with a smooth convex surface, and the blunt needle body is provided with a lumen and a runner hole communicated with the lumen. Optionally, the blunt needle body comprises: A needle body having the lumen; The blunt tip is arranged at one end of the needle body along the length direction, the blunt tip covers the end opening of the needle body, the blunt tip is provided with the surface protruding outwards smoothly, and the flow passage hole is formed in the blunt tip. Optionally, the runner hole extends along a length direction of the needle body. Optionally, the flow passage hole and the lumen are in smooth transition. Optionally, the blunt tip is provided with at least two runner holes, and each runner hole is sequentially arranged at intervals along the circumferential direction of the needle body. Optionally, the blunt tip is provided with three runner holes, and each runner hole is sequentially arranged at intervals along the circumferential direction of the needle body. Op