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Tunnel indwelling trocar for dialysis and use method thereof

A technique for indwelling needles and trocars, applied in the field of medical devices, can solve the problems of wound enlargement, easy displacement or deviation, and long tunnel formation time, so as to reduce injuries, avoid wound enlargement, and shorten the tunnel formation time. Effect

Pending Publication Date: 2021-03-09
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] This treatment method has at least the following disadvantages in the specific implementation process: in the existing treatment method, when the puncture needle is taken out and the tunnel nail is installed in the tunnel, since it is artificially installed, it is prone to displacement or offset during installation etc., which can lead to wound enlargement, and the tunneling time of this treatment is also longer

Method used

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  • Tunnel indwelling trocar for dialysis and use method thereof
  • Tunnel indwelling trocar for dialysis and use method thereof
  • Tunnel indwelling trocar for dialysis and use method thereof

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Embodiment

[0056] refer to Figure 1 to Figure 4 , the embodiment of the present invention discloses a tunnel indwelling trocar for dialysis, which includes an indwelling needle assembly 100 , a puncture mechanism 200 and a holding nail 300 .

[0057] The indwelling needle assembly 100 is provided with a channel 150; the puncture mechanism 200 is used to puncture the patient's skin; the retaining nail 300 is lined in the indwelling needle assembly 100, and the retaining nail 300 seals the channel 150; one of the puncture mechanism 200 and the retaining nail 300 and Clamped in the channel 150 , and the puncture mechanism 200 and the retaining nail 300 are both slidably connected with the indwelling needle assembly 100 .

[0058] When using the tunnel indwelling trocar for dialysis disclosed in this embodiment, the puncture assembly is first inserted into the indwelling needle assembly 100, and then the indwelling needle assembly 100 is placed under the patient's skin, and then the punctur...

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Abstract

The invention discloses a tunnel indwelling trocar for dialysis and a use method thereof. The tunnel indwelling trocar for dialysis comprises an indwelling needle assembly, a puncture mechanism and aretaining nail, wherein the indwelling needle assembly is provided with a channel; the puncture mechanism is used for skin puncture of a patient; the retaining nail is lined in the indwelling needle assembly and seals the channel; and one of the puncture mechanism and the retaining nail is clamped in the channel, and the puncture mechanism and the retaining nail are both slidably connected with the indwelling needle assembly. The tunnel indwelling trocar for dialysis is simple in structure and convenient to use, the indwelling needle assembly is directly fixed under the skin of the patient, then the installation of the retaining nail does not affect the position of the indwelling needle assembly after the puncture assembly is taken out, and wound enlargement caused by repeated puncture canbe avoided; and meanwhile, since the indwelling needle assembly is directly fixed under the skin of the patient and is equivalent to a tunnel, the time for forming the tunnel can be shortened, and the treatment is safer, more convenient and faster.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a tunnel indwelling trocar for dialysis and a method for using the same. Background technique [0002] Since the first application of arteriovenous fistula in hemodialysis in 1962, arteriovenous fistula has been the most ideal permanent access for long-term use in patients with end-stage renal failure. Arteriovenous fistula can provide the required blood flow for hemodialysis treatment, however, there are many reasons that affect the use time of arteriovenous fistula, the most important reason is the damage to blood vessels caused by frequent puncture. Therefore, the puncture technique and the protection of internal flaccid vessels are very important. [0003] The existing treatment method is to leave a buttonhole tunnel under the patient's skin for subsequent use. The specific operation is: at the end of each dialysis, pull out the puncture needle to stop the bleeding, and then p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/36A61M1/16
CPCA61M1/3661A61M1/1621
Inventor 于洋陈林陈宇陈冲张颖君李林华
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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