patent (redirected from patents)

patent /pat·ent/ (pat´'nt)

1. open, unobstructed, or not closed.

2. apparent, evident.

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pat·ent (ptnt)

n.

1. A grant made by a government that confers upon the creator of an invention the sole right to make, use, and sell that invention for a set period of time.

2. An invention protected by such a grant.

adj.

1. Of, relating to, or being a nonprescription drug or other medical preparation that is often protected by a trademark.

2. (ptnt) Not blocked; open.

3. (ptnt) Spreading open; expanded.

v.

1. To obtain a patent on or for something, such as an invention.

2. To invent, originate, or be the proprietor of an idea.

3. To grant a patent to someone or for something.

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patent (pat´nt),

adj open and unblocked, such as a
patent airway.

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patent

1. open, unobstructed, or not closed.

2. apparent, evident.

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patent ductus arteriosus (PDA)

abnormal persistence of an open lumen in the ductus arteriosus, between the aorta and the pulmonary artery, after birth. The ductus arteriosus is open during prenatal life, allowing most of the blood of the fetus to bypass the lungs, but normally this channel closes shortly before birth. When the ductus arteriosus remains open, it places special burdens on the left ventricle and causes a diminished blood flow in the aorta. May remain open for up to 5 days in foals. One of the most common congenital heart defects in dogs, but less common in cats. Causes a continuous 'machinery' murmur loud in systole, soft in diastole, and 'bounding' pulse.

patent ductus venosus

see ductus venosus.

patent foramen ovale

see foramen ovale (1).

patent medicine

a drug or remedy protected by a trademark, available without a prescription.

patent period

the period during a disease in which the causative agent can be detected by clinicopathological tests, e.g. for helminth eggs.

patent urachus

the urachus persists after birth and allows urine to drip out of the bladder through the umbilicus. See also urachus.

patent ventricular septum

includes several entities characterized by incomplete closure of ventricular wall. Characterized by palpable cardiac thrill and audible pansystolic murmur on both sides of the chest at birth, accompanied by exercise intolerance and developing dyspnea at rest.