Puncture apparatus for cathetering disposable percutaneous peritoneal dialysis catheter

Abstract

The invention discloses a puncture apparatus for cathetering a disposable percutaneous peritoneal dialysis catheter. The puncture apparatus comprises a core rod and a casing pipe sleeving the core rod, wherein the outer part of the casing pipe is sleeved with a sleeve hoop; the outer diameter of the core rod is of a two-sectional stepped structure, a small end of the two-sectional stepped structure of the core rod is provided with a sharp end for puncturing peritoneum, and an annular bulge is formed on the tail part of the large end of the two-sectional stepped structure of the core rod, the casing pipe is a joint body of a first half casing pipe and a second half casing pipe which can be separated outwardly in the radial direction; the tail part of the sleeve hoop is also provided with anannular bulge; the core rod, the casing pipe and the sleeve hoop are respectively a high-density polyethylene molded part; and the core rod is of a cylindrical stepped structure.

Description

technical field [0001] The invention relates to a disposable medical device, in particular to a disposable puncture device for percutaneous peritoneal dialysis catheter placement. Background technique [0002] Patients with end-stage renal failure must rely on maintenance dialysis and other renal replacement therapy to prolong their lives. Peritoneal dialysis (PD) is a dialysis method that uses the body's own peritoneum as the dialysis membrane. The premise of receiving peritoneal dialysis treatment is to insert a catheter in the peritoneal cavity of the patient. The catheter is the passage connecting the peritoneal dialysis fluid and the peritoneal cavity. The successful implantation of the peritoneal dialysis catheter is the key to establishing a smooth peritoneal dialysis access. [0003] The methods of peritoneal dialysis catheterization are divided into surgical incision method, laparoscopic method, and percutaneous puncture method. Surgical incision and catheterizati...

AI Technical Summary

Problems solved by technology

Disadvantages are: long operation time (>1.5h), high risk of infection, slow postoperative wound recovery; prone to bleeding, leakage, omentum wrapping, incisional hernia, peritoneal fistula, etc.

The disadvantages are: there are technical risks such as possible damage to the intestinal tube, and it is an all-imported product, which is expensive (about 4,000 yuan), and medical insurance does not pay, so it needs to be borne by patients at their own expense, which limits its clinical promotion to a certain extent.

But its disadvantages are: the inner core of the trocar is designed as a smooth straight rod, and the outer sleeve is also smooth, so it is easy to slip when pulling out the inner core and outer sleeve during the operation; it is made of stainless steel and can be reused after high temperature sterilization , if the disinfection is not strict, there is a risk of cross-infection, it does not meet the infection control requirements, and it is not conducive to use at any time in an emergency

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