# US 2023/0405259 A1 · Ventilator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0405259 A1 - Document ID: US20230405259A1 - Status: Published application - Kind: A1 - Application number: 18/246,897 - Filed: 2021-09-15 - Published: 2023-12-21 - Earliest claimed: 2020-10-02 - Inventors: Naoyuki Ishikita - Web page: https://patentgrep.com/patent/US20230405259A1 ## CPC - A61M 16/209: {Relief valves} - B33Y 80/00: Products made by additive manufacturing - A61M 16/0833: {T- or Y-type connectors, e.g. Y-piece} - A61M 16/1045: {Devices for humidifying or heating the inspired gas by using recovered moisture or heat from the expired gas} - A61M 16/0066: {Blowers or centrifugal pumps} - A61M 16/0084: {self-reinflatable by elasticity, e.g. resuscitation squeeze bags} - A61M 16/01: specially adapted for anaesthetising {(A61M16/104, A61M16/18 take precedence)} - A61M 16/04: Tracheal tubes (catheters in general A61M25/00) - A61M 16/06: Respiratory or anaesthetic masks - A61M 2205/583: by visual feedback - A61M 2207/00: Methods of manufacture, assembly or production - B29L 2031/753: {Medical equipment; Accessories therefor (bloodbags, medical bags B29L2031/7148; artificial eyes B29L2011/0008)} - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - B33Y: ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES ## Abstract A ventilator includes a pipe having a ventilation path, a relief valve, and a spontaneous-breathing valve. The pipe includes a main port that allows a gas to be inhaled by a patient and a gas exhaled by the patient to pass therethrough, a relief valve port that is in communication with the main port through the ventilation path, and a spontaneous-breathing valve port that is in communication with the main port through the ventilation path. The relief valve is mounted on the relief valve port and configured to be opened in accordance with the pressure in the ventilation path so as to be capable of allowing communication between the ventilation path and the outside of the pipe and releasing the pressure. The spontaneous-breathing valve is mounted on the spontaneous-breathing valve port, and the spontaneous-breathing valve is configured to be opened in accordance with an intake pressure at which the patient spontaneously breathes. ## Claims ### Claim 1 A ventilator comprising: a pipe having a ventilation path; a relief valve; and a spontaneous-breathing valve; wherein the pipe includes a main port allowing a gas that is to be inhaled by a patient and a gas exhaled by the patient to pass through the main port, a relief valve port communicating with the main port through the ventilation path, and a spontaneous-breathing valve port communicating with the main port through the ventilation path, wherein the relief valve is mounted on the relief valve port and configured to be opened in accordance with a pressure in the ventilation path in such a manner as to be capable of allowing communication between the ventilation path and an outside of the pipe and releasing the pressure, and wherein the spontaneous-breathing valve is mounted on the spontaneous-breathing valve port, and the spontaneous-breathing valve is configured to be opened in accordance with an intake pressure at which the patient spontaneously breathes and configured to be capable of allowing communication between the ventilation path and the outside of the pipe and enabling inhalation. ### Claim 2 (depends on 1) The ventilator according to claim 1, wherein the spontaneous-breathing valve includes an intake valve that operates in accordance with the intake pressure, and wherein the spontaneous-breathing valve port has a valve chamber in which the intake valve is accommodated in such a manner as to be openable and closable. ### Claim 3 (depends on 1) The ventilator according to claim 1, wherein the spontaneous-breathing valve includes a lid member having a mounting portion that is to be mounted on the spontaneous-breathing valve port and an intake hole that allows communication between an inside of the spontaneous-breathing valve port and the outside of the pipe, and an intake valve that is operated by the intake pressure in such a manner as to open and close the intake hole. ### Claim 4 (depends on 3) The ventilator according to claim 3, wherein the spontaneous-breathing valve includes a pressing member that presses the intake valve against the intake hole in such a manner as to close the intake hole and that elastically deforms such that the intake valve is displaced in accordance with the intake pressure, which is predetermined. ### Claim 5 (depends on 1) The ventilator according to claim 1, wherein the pipe is a branch pipe in which the ventilation path includes a plurality of branch paths. ### Claim 6 (depends on 1) The ventilator according to claim 1, wherein the pipe has an input port through which a gas is introduced into the ventilation path. ### Claim 7 (depends on 1) The ventilator according to claim 1, wherein the pipe is a 3D printed body made of a resin. ### Claim 8 (depends on 1) The ventilator according to claim 1, wherein the relief valve includes a pressure adjustment valve that is openable and closable in accordance with the pressure in the ventilation path and a main body portion in which the pressure adjustment valve is accommodated, and wherein the pressure adjustment valve and the main body portion are each a 3D printed body made of a resin. ### Claim 9 (depends on 1) The ventilator according to claim 1, wherein the spontaneous-breathing valve includes an intake valve that operates in accordance with the intake pressure and a lid member that is mounted on the spontaneous-breathing valve port in such a manner that the intake valve is accommodated in the spontaneous-breathing valve port, and wherein the intake valve and the lid member are each a 3D printed body made of a resin. ### Claim 10 (depends on 1) The ventilator according to claim 1, further comprising: a heat-and-moisture exchanger unit communicating with the main port. ### Claim 11 (depends on 1) An ventilator unit comprising: the ventilator according to claim 1; and a patient-side breathing member having one end connected to the main port of the ventilator and another end connected to a patient. ### Claim 12 (depends on 1) A manual pulmonary resuscitator comprising: the ventilator according to claim 1. ### Claim 13 (depends on 1) An inhalation anesthesia apparatus comprising: the ventilator according to claim 1.