The present invention relates to a
medical device, and specifically relates to a
urinary catheter with a
urinary catheter top end made of a multi-layer
composite material. The technical problem to be solved by the present invention is that the material used in the existing urinary catheters is relatively hard for the bladder mucosa, and the relatively hard top end of the
urinary catheter may press and stimulate the bladder wall to cause bladder stimulation symptoms such as
frequent urination,
urgent urination,
abdominal pain, and intense
sensation of holding back
urine. According to the present invention, the top end of the urinary
catheter is made of a multi-layer
composite material and is formed by nesting two or more
layers of materials with different
hardness, wherein the innermost layer is an inner lining layer, and the inner lining layer is continuous with the wall of the remaining urinary
catheter but has a smaller thickness. A soft
cushion layer is nested on the surface of the inner lining layer, the soft
cushion layer is made of a softer material than the inner lining layer, and one or more film
layers may be additionally disposed on the outer side of the soft
cushion layer to wrap the soft cushion layer inside a
closed cavity. The present invention has the beneficial effects that the top end of the urinary
catheter is of a
layered structure, and the
hardness of different
layers of materials is different, wherein the part of the outer layer in direct contact with the bladder wall is made of a super-flexible material so as to reduce the compression on the bladder mucosa, and the inner layer and other parts of the urinary catheter are made of relatively hard materials so as to ensure the support degree of the urinary catheter.