Assertion: catheter's valve | /r/HasProperty | provided in first bore
Facets:
value: between the first apertures
type: TEMPORAL
value: between the second
type: TEMPORAL
Source sentences:
text: It is a further object of this invention in a preferred form to provide a catheter as described wherein a non-return valve is provided in the first bore between the second and the first apertures so that cleaning fluid forced into the first bore may enter the bladder through the second aperture but is prevented by the non-return valve from entering that part of the first bore between the non-return valve and the first aperture.