TH44064A - Machine for recovering anesthetic substances - Google Patents

Abstract

The DC60 (24/04/50) device (10) for the recovery of exhaled anesthesia from the patient consists of a small accommodation container (26) and a compressor (34) that can be used for the exhalation of the patient. Before the exhalation of the breath is forwarded to the pulp separator (40), in which the anesthesia is Separated from any remaining gas Before its return to anesthesia, it is recycled to an anesthesia dispenser (10), a device (10) for the recovery of exhaled anesthesia from a patient, consisting of a small container (26) and a compactor (34) that can Works in the airing of the patient's exhalation Before the exhalation of the breath is forwarded to the pulp separator (40), in which the anesthesia is Separated from any remaining gas Before its return to doping through recycling to anesthesia dispenser (10).

Claims (10)

1. A device for the recovery of exhaled anesthetic gas from a patient. The device consists of a holding vessel (26) for receiving the patient's exhaled gas and for temporarily storing it; a branching pathway (40) for receiving and transporting the anesthetic gas from the branching area to an area other than the surrounding atmosphere surrounding the exhaled patient and for separating the anesthetic gas from it. It is characterized by a compressor (34) at the end of the holding vessel (26) that is functionally connected to it for receiving and compressing the exhaled gas; and the branching pathway consists of a membrane separator functionally connected to the compressor (34) to receive the exhaled gas through compression into the tubular side of the separator and is constructed in a way that allows the anesthetic gas to pass through the membrane (44) to the shell side (46) of the separator. The branching pathway is further composed of a first outlet (48) for receiving the gas through the pressure increase after the anesthetic gas has been removed and a second outlet (52) for receiving the anesthetic gas from the branching area. 2. The equipment as entitled in claim 1, in which the area includes anesthetic delivery pathways for administering anesthetic to patients, thus providing for the recycling of anesthetic substances from such separation. 3. The device, as entitled under claim 1 or claim 2, consists of a discharge pathway that is functionally connected to the first (48) outlet of the branch pathway for the passage of the anesthetic gas through pressure increase for release into the atmosphere at a point far from the patient's surrounding atmosphere. 4. The instrument under any of the claims in claims 1 through 3 shall consist of a pressure sensor pathway (28) for monitoring the pressure inside the resting vessel (26) and for activating the compressor (34) only when a pressure greater than the estimated atmospheric pressure is detected. 5. The instrument, as entitled under claim 4, is further compliant with a control pathway (30) for receiving signals from the pressure sensor pathway (28) mentioned above and for initiating control of the compressor operation as necessary and when required. 6. The equipment under any of the claims in clauses 1 through 5, in which the compressor (34) is capable of compressing the exhaled gas to a pressure equal to or greater than one gauge atmosphere. 7. The instrument under any of the claims in claims 1 through 6 shall include a gas analyzer (56) that is functionally connected to monitor the purity of the anesthetic solution from separation and functionally connected to an anesthetic dispenser (10) so that the recycled anesthetic solution can be remixed with oxygen and new anesthetic solution for dispensing to the patient. 8. The device under any of the claims in clauses 1 through 7, in which the resting container (26) is included with a collapsible/expandable bag resting container. 9. Any device under any of the claims 1 through 8 in which the anesthetic substance contains nitrous oxide. 10. Methods of returning the anesthetic gas exhaled by the patient, which involves the reception of the patient's exhaled breath and its temporary storage in a holding vessel (26), the transport of the exhaled gas from the holding vessel (26) to a separator (40) to separate the anesthetic from the exhaled gas, and the transport of the anesthetic from the separation to an area other than the patient's surrounding atmosphere. Specifically, the exhaled gas from the holding vessel (26) is transported to a compressor (34) which compresses the exhaled gas, and from the compressor it is transported to a separator (40) which is equipped with a membrane separator.