Catheter with super-lubricity antibacterial coatings and manufacturing method for catheter

Abstract

The invention discloses a catheter with super-lubricity antibacterial coatings and a manufacturing method for the catheter. The catheter comprises a body part, an outer wall coating and an inner wall coating, wherein the body part is inserted into a human body; the outer wall coating attaches to the outer wall of the body part; and the inner wall coating attaches to the inner wall of the body part. The outer wall coating comprises an outer antibacterial layer, an outer controlled-release layer and an outer lubricating layer in sequence from inside to outside, wherein the outer antibacterial layer attaches to the surface of the outer wall of the body part, the outer controlled-release layer attaches to the outer antibacterial layer, and the outer lubricating layer attaches to the outer controlled-release layer. The inner wall coating comprises an inner antibacterial layer, an inner controlled-release layer and an inner lubricating layer in sequence from inside to outside, wherein the inner antibacterial layer attaches to the surface of the inner wall of the body part, the inner controlled-release layer attaches to the inner antibacterial layer, and the inner lubricating layer attaches to the inner controlled-release layer. The outer antibacterial layer and the inner antibacterial layer respectively comprise inorganic salt containing Ag<+>, Zn<2+> or Cu<2+> ions; the outer controlled-release layer and the inner controlled-release layer respectively comprise an organic chelate of inert metal; and the outer lubricating layer and the inner lubricating layer respectively comprise hydrophilic gel. After the technical scheme is adopted, the catheter has a sustainable and stable antibacterial function, and the coatings can firmly attach to the surface of the catheter.

Description

technical field [0001] The invention relates to a urinary catheter with an ultra-smooth antibacterial coating and a manufacturing method thereof. Background technique [0002] Urinary catheter is a commonly used medical device, mainly used for patients with urinary incontinence or disabled persons with paraplegia and quadriplegia. Since such patients cannot control urination independently, inserting a catheter can help them urinate safely and effectively. Urine is stored in the empty bladder. [0003] During the use of the catheter, aseptic operation should be strictly followed, but because of the physiological structure of the urethra itself, even aseptic operation cannot prevent urinary tract infection. The use of indwelling catheters is one of the main causes of urinary tract infections. Current clinical data show that 40%-50% of common infections in hospitals are caused by urinary tract infections. Wherein more than 80% are caused by the use of urinary catheter again. ...

AI Technical Summary

Problems solved by technology

In the existing antibacterial catheters, some of them spray the material containing Ag ions on the outer surface of the catheter. Although they have the advantage of rapid antibacterial effect, the side effects are relatively large, and it is difficult to form a sustained and stable antibacterial effect. The coating is easy to fall off from the surface of the catheter or oxidized in the body; there is also an antibacterial agent evenly distributed on the catheter, although the balance of antibacterial effect has been enhanced, but only the antibacterial agent on the surface of the catheter can exert antibacterial effect Most of the antibacterial agents added to the catheter material cannot play a role, so it is difficult to achieve a sustained and stable antibacterial effect

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