| 释义 |
DictionarySeecannulaEncyclopediaSeeCannulaMedicalSeeNEEDLELESS CANNULAE USED TO CONNECT AN ADDITIVE TO PRIMARY INTRAVENOUS INFUSIONS A tube or sheath that encloses a trocar. After the device is inserted into a blood vessel, body cavity, duct, or hollow organ, withdrawal of the trocar lets fluid drain (so that it can be collected or sampled) or escape. See: illustrationBellocq's cannula See: Bellocq's cannula NASAL CANNULA FOR OXYGEN DELIVERY.nasal cannulaTubing used to deliver oxygen at levels from 1 to 6 L/min. The nasal prongs of the cannula extend approx. 1 cm into each naris and are connected to a common tube, which is then connected to the oxygen source. It is used to treat conditions in which a slightly enriched oxygen content is needed, such as emphysema. The exact percentage of oxygen delivered to the patient varies with respiratory rate and other factors. illustrationillustrationcannula A hollow surgical tube, into which is inserted a close fitting, sharp-pointed inner stiffener called a trocar. The combination can easily be pushed through the skin or the lining of a blood vessel or other tissue. When in position, the trocar is pulled backwards out of the cannula, leaving the latter in place. Fluids or other materials may then be passed.CannulaA tube inserted into a cavity to serve as a channel for the transport of fluid.Mentioned in: Dacryocystitis, Inhalation Therapies, Venous Accesscan·nu·la (kan'yū-lă) Tube that can be inserted into a cavity, usually by means of a trocar filling its lumen. [L. dim. of canna, reed]">cannula INTRAVENOUS INFUSIONS" href="javascript:eml2('davisTab', 'c08.jpg')"> NEEDLELESS CANNULAE USED TO CONNECT AN ADDITIVE TO PRIMARY INTRAVENOUS INFUSIONS A tube or sheath that encloses a trocar. After the device is inserted into a blood vessel, body cavity, duct, or hollow organ, withdrawal of the trocar lets fluid drain (so that it can be collected or sampled) or escape. See: illustrationBellocq's cannula See: Bellocq's cannulaNASAL CANNULA FOR OXYGEN DELIVERY.nasal cannulaTubing used to deliver oxygen at levels from 1 to 6 L/min. The nasal prongs of the cannula extend approx. 1 cm into each naris and are connected to a common tube, which is then connected to the oxygen source. It is used to treat conditions in which a slightly enriched oxygen content is needed, such as emphysema. The exact percentage of oxygen delivered to the patient varies with respiratory rate and other factors. illustrationillustrationcannula A hollow surgical tube, into which is inserted a close fitting, sharp-pointed inner stiffener called a trocar. The combination can easily be pushed through the skin or the lining of a blood vessel or other tissue. When in position, the trocar is pulled backwards out of the cannula, leaving the latter in place. Fluids or other materials may then be passed.CannulaA tube inserted into a cavity to serve as a channel for the transport of fluid.Mentioned in: Dacryocystitis, Inhalation Therapies, Venous Accesscan·nu·la (kan'yū-lă) Tube that can be inserted into a cavity, usually by means of a trocar filling its lumen. [L. dim. of canna, reed] |