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
CN112451775APending Publication Date: 2021-03-09WEST CHINA HOSPITAL SICHUAN UNIV
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
WEST CHINA HOSPITAL SICHUAN UNIV
Publication Date
2021-03-09

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More