# US 2023/0068366 A1 · System for aiding placement of a nasogastric tube or a nasoduodenal tube and method for using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0068366 A1 - Document ID: US20230068366A1 - Status: Published application - Kind: A1 - Application number: 17/894,389 - Filed: 2022-08-24 - Published: 2023-03-02 - Earliest claimed: 2021-08-26 - Assignees: Medivisiontech Co., Ltd.; National Cheng Kung University Hospital - Applicants: MediVisionTech Co., Ltd.; National Cheng Kung University Hospital - Inventors: Chien-Cheng CHEN; Chiao-Hsiung CHUANG - Web page: https://patentgrep.com/patent/US20230068366A1 ## CPC - A61J 15/0003: {Nasal or oral feeding-tubes, e.g. tube entering body through nose or mouth} - A61J 15/0007: {inserted by using a guide-wire (guide wires A61M25/09)} - A61B 1/00052: {positioned at proximal end of the endoscope body} - A61B 1/00154: {using guiding arrangements for insertion} - A61B 1/0055: {Constructional details of insertion parts, e.g. vertebral elements} - A61B 1/05: characterised by the image sensor, e.g. camera, being in the distal end portion - A61J 15/0026: {Parts, details or accessories for feeding-tubes (external tubes from medical containers to a connector outside of the body A61M39/08)} - A61J 15/0069: {Tubes feeding directly to the intestines, e.g. to the jejunum} - A61B 1/233: for the nose, i.e. nasoscopes {, e.g. testing of patency of Eustachian tubes} - A61B 1/2736: {Gastroscopes} - A61M 25/0138: {having flexible regions as a result of weakened outer material, e.g. slots, slits, cuts, joints or coils} - A61M 25/0147: {with movable mechanical means, e.g. pull wires} - A61M 2025/0681: {Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube} - A61J: CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - 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)} ## Abstract A system for aiding placement of a nasogastric tube or a nasoduodenal tube and a method for using the same is disclosed, and the system comprises that of: a placing tube; a three-way connector, having a first port, a second port, and a third port, the first port being on the opposite end to the second port, the first port being adjacent to the third port, the first port being connected with a proximal end of the placing tube, the third port being adapted for pumping air or fluid into the three-way connector; an endoscope, having an insertion tube and an image-capturing device, the distal end of the insertion tube being a bending section, the image-capturing device being located in the front end of the bending section; and a display unit, connected with the endoscope. ## Claims ### Claim 1 A system for aiding placement of a nasogastric tube or a nasoduodenal tube, comprising: a placing tube (1); a three-way connector (2) that has a first port (21), a second port (22) and a third port (23) with the first port (21) on the opposite end to the second port (22) and the third port (23) adjacent to the first port (21); wherein said first port (21) is connected with the proximal end of the placing tube (1) and the third port (23) designed for air/fluid injection; an endoscope (3) that has an insertion tube (31) and an image-capturing device (32) with the distal end of the insertion tube being a bending section (311) and the image-capturing device (32) being set at the front end of the bending section (311); and a display unit (4) that is connected to the endoscope (3); wherein the endoscope (3) is inserted into the second port (22) and then through the first port (21) of the three-way connector (2) to the distal end of the insertion tube (1), with the bending section (311) going out of the distal end of the placing tube (1); after the placing tube (1) is inserted into a natural tract of the human body, pump air or fluid into the natural tract via the third port (23) of the three-way connector (2) in order to inflate a cavity of the human body, if needed, thus the image-capturing device (32) capturing images in the natural tract, which are then instantaneously shown on the display unit (4), the placing tube (1) being placed into the target position by viewing the lumen images, after that, the endoscope (3) and the three-way connector (2) being removed from the placing tube (1). ### Claim 2 (depends on 1) The system for aiding placement of a nasogastric tube or a nasoduodenal tube, according to claim 1, further comprising a cover (33) that has a hole structure (331), the endoscope (3) being combined with the cover (33) through the hole structure (331) so that the cover (33) covers the second port (22) of the three-way connector (2) when the endoscope (3) goes through the three-way connector (2). ### Claim 3 (depends on 1) The system for aiding placement of a nasogastric tube or a nasoduodenal tube, according to claim 1, further comprising a direction controller (5), which controls the axial direction of the distal end of the endoscope (3), so that the endoscope (3) is controlled to let the placing tube (1) be guided into the target position. ### Claim 4 (depends on 1) The system for aiding placement of a nasogastric tube or a nasoduodenal tube, according to claim 1, wherein the endoscope (3) has a light source that emits a light to a natural tract of the human body. ### Claim 5 (depends on 4) The system for aiding placement of a nasogastric tube or a nasoduodenal tube, according to claim 4, wherein the images captured by the image-capturing device (32) contain information of internal organs/tissues reflected by the light and are then displayed on the display unit (4). ### Claim 6 (depends on 1) The system for aiding placement of a nasogastric tube or a nasoduodenal tube, according to claim 1, wherein the bending section (311) comprises: a first body (A1), having a plurality of concave shapes (A11) located on the top/bottom surfaces of the first body (A1) with some of concave shapes (A11) having a first hole (H1) and a second hole (H2) respectively; a second body (A2), having a plurality of concave shapes (A21) located on the top/bottom surfaces of the second body (A2) with some of the concave shapes (A21) having a third hole (H3) and a fourth hole (H4) respectively; a first pivot element (B1), having a fifth hole (H5) corresponding to the first hole (H1), one surface of the first pivot element (B1) being placed on the concave shape (A11) of the first body (A1), another surface of the first pivot element (B1) being placed on the concave shape (A21) of the second body (A2), and the fifth hole (H5) being aligned with the third hole (H3) so that the first body (A1) and the second body (A2) are connected to each other via the first pivot element (B1); a second pivot element (B2), having a sixth hole (H6) corresponding to the second hole (H2), one surface of the second pivot element (B2) being placed on the concave shape (A11) of the first body (A1), another surface of the first pivot element (B1) being placed on the concave shape (A21) of the second body (A2), and the sixth hole (H6) being aligned with the fourth hole (H4) so that the first body (A1) and the second body (A2) are connected to each other via the second pivot element (B2); a first wire (L1), passed through the first hole (H1), the third hole (H3), and the fifth hole (H5); and a second wire (L2), passed through the second hole (H2), the fourth hole (H4), and the sixth hole (H6); wherein the bending section (311) is assembled. ### Claim 7 (depends on 6) The system for aiding placement of a nasogastric tube or a nasoduodenal tube according to claim 6, wherein the concave shapes (A11) of the first body (A1) further have a seventh hole (H7) and an eighth hole (H8), and the second concave shapes (A21) of the second body (A2) further have a ninth hole (H9) and a tenth hole (H10), the seventh hole (H7) being corresponding to the ninth hole (H9), the eighth hole (H8) being corresponding to the tenth hole (H10). ### Claim 8 (depends on 7) The system for aiding placement of a nasogastric tube or a nasoduodenal tube according to claim 7, wherein the bending section (311) has a third wire (L3) and a fourth wire (L4), with the third wire (L3) passed through the seventh hole (H7) and the ninth hole (H9), and the fourth wire (L4) passed through the eighth hole (H8) and the tenth hole (H10), the axial direction of the bending section (311) moving towards the third wire (L3) when the third wire (L3) is pulled, or the axial direction of the bending section (311) moving towards a direction of the fourth wire (L4) when the fourth wire (L4) is pulled. ### Claim 9 (depends on 7) The system for aiding placement of a nasogastric tube or a nasoduodenal tube according to claim 7, wherein the bending section (311) further comprises a third body (A3), a third pivot element (B3), and a fourth pivot element (B4), the third body (A3) having at least eight concave shapes (A31), which are located in the top/bottom surfaces of the third body (A3) and have an eleventh hole (H11) and a twelfth hole (H12), the third pivot element (B3) having a thirteenth hole (H13) corresponding to the ninth hole (H9) with one surface of the third pivot element (B3) placed into the concave shape (A21) of the second body (A2), and another surface of the third pivot element (B3) placed into the concave shape (A31) of the third body (A3), and the thirteenth hole (H13) being corresponding to the eleventh hole (H11) so that the third body (A3) and the second body (A2) are connected to each other via the third pivot element (B3); the fourth pivot element (B4) having a fourteen hole (H14) corresponding to the tenth hole (H10), one surface of the fourth pivot element (B4) being placed on the concave shape (A21) of the second body (A2), another surface of the fourth pivot element (B4) being matched up the concave shape (A31) of the third body (A3), and the fourteenth hole (H14) corresponding to the twelfth hole (H12), thus the fourth pivot element B4 being between the second body A2 and the third body A3, which means the third body (A3) and the second body (A2) being connected to each other via the fourth pivot element (B4). ### Claim 10 (depends on 9) The system for aiding placement of a nasogastric tube or a nasoduodenal tube, according to claim 9, wherein the concave shape (A31) of the third body (A3) has a fifteenth hole (H15) and a sixteenth hole (H16), the first wire (L1) passed through the first hole (H1) of the concave shape (A11), the third hole (H3) of the concave shape (A21), the fifth hole (H5) of the first pivot element (B1), and the fifteenth hole (H15) of the concave shape (A31), the second wire (L2) passed through the second hole (H2) of the concave shape (A11), the fourth hole (H4) of the concave shape (A21), the sixth hole (H6) of the second pivot element (B2), and the sixteenth hole (H16) of the concave shape (A31), the axial direction of the bending section (311) moving towards the first wire (L1) when the first wire (L1) is pulled, or the axial direction of the bending section (311) moving towards the second wire (L2) when the second wire (L2) is pulled. ### Claim 11 (depends on 6) The system for aiding placement of a nasogastric tube or a nasoduodenal tube, according to claim 6, wherein the bending section (311) further comprises a third wire (L3) and a fourth wire (L4), the third wire (L3) passed through a seventh hole (H7) of the concave shape (A11), a ninth hole (H9) of the concave shape (A21), an eleventh hole (H11) of a concave shape (A31), and a thirteenth hole (H13) of a third pivot element (B3), and the fourth wire (L4) passed through an eighth hole (H8) of the concave shape (A11), a tenth hole (H10) of the concave shape (A21), a twelfth hole (H12) of the concave shape (A31), and a fourteenth hole (H14) of the fourth pivot element (B4), the axial direction of the bending section (311) moving towards the third wire (L3) when the third wire (L3) is pulled, or the axial direction of the bending section (311) moving towards the fourth wire (L4) when the fourth wire (L4) is pulled. ### Claim 12 (depends on 1) The system for aiding placement of a nasogastric tube or a nasoduodenal tube, according to claim 1, wherein the bending portion (311) comprises: a first body (C1), having at least two concave shapes (C11), at least two concave shapes (C12) and at least two convex shapes (C13), the concave shapes (C11) and the concave shapes (C12) being located on a first surface of the first body (C1), the concave shapes (C12) having a first hole (I1) and a second hole (I2), the convex shape (C13) being located on a second surface of the first body (C1), a position where the convex shape (C13) is on the second surface being corresponding to a position where the concave shapes (C11) is on the first surface; a second body (C2), having at least two concave shapes (C21), at least two concave shapes (C22) and at least two convex shapes (C23), the concave shapes (C21) and the concave shapes (C22) being located on a first surface of the second body (C2), while the concave shapes (C22) having a third hole (I3) and a fourth hole (I4), the convex shapes (C23) being located on a second surface of the second body (C2), the position of the convex shape (C23) on the second surface being corresponding to the position of the concave shape (C21) on the first surface, the convex shape (C23) fitting into the concave shape (C11) in order to let the third hole (I3) be corresponding to the first hole (I1), and the fourth hole (I4) be corresponding to the second hole (I2); a first wire (L1), passed through the first hole (I1) and the third hole (I3); and a second wire (L2), passed through the second hole (I2) and the fourth hole (I4); wherein the axial direction of the bending section (311) being moved towards the first wire (L1) when the first wire (L1) is pulled, or the axial direction of the bending section (311) being moved towards the second wire (L2) when the second wire (L2) is pulled. ### Claim 13 (depends on 12) The system for aiding placement of a nasogastric tube or a nasoduodenal tube, according to claim 12, wherein the concave shape (C11) has a fifth hole (I5) and a six hole (I6), which pass from the convex shapes (C13) to the concave shapes (C11), the concave shapes (C21) having a seventh hole (I7) and an eighth hole (I8), which penetrate through the convex shapes (C23) to the concave shapes (C21). ### Claim 14 (depends on 13) The system for aiding placement of a nasogastric tube or a nasoduodenal tube, according to claim 13, wherein the bending section (311) comprises a third wire (L3) and a fourth wire (L4), the third wire (L3) passed through the fifth hole (I5) and the seventh hole (I7), the fourth wire (14) passed through the sixth hole (I6) and the eighth hole (I8). ### Claim 15 (depends on 1) The system for aiding placement of a nasogastric tube or a nasoduodenal tube, according to claim 1, wherein the bending section (311) comprises: a first body (D1), having a concave shape (D11), a first convex shape (D12), a first hole (J1), and a second hole (J2), the concave shape (D11) being placed on a first surface of the first body (D1), the convex shape (D12) being placed at a second surface of the first body (D1), the convex shape (D12) on the second surface being corresponding to the concave shape (D11) on the first surface, the first hole (J1) being at a side of the first body (D1), the second hole (J2) being at another side of the first body (D1); a second body (D2), having a concave shape (D21), a convex shape (D22), a third hole (J3), and a fourth hole (J4), the concave shape (D21) being placed on a first surface of the second body (D2), the convex shape (D22) being placed on a second surface of the second body (D2), the convex shape (D22) on the second surface of the second body (D2) being corresponding to the concave shape (D21) on the first surface of the second body (D2), the third hole (J3) being at a side of the second body (D22), the fourth hole (J4) being at another side of the second body (D22), the convex shape (D22) being matched for the concave shape (D11) of the first body (D1) in order to let the third hole (J3) correspond to the first hole (J1), and the fourth hole (J4) correspond to the second hole (J2); a first wire (L1), passed through the first hole (J1) and the third hole (J3); and a second wire (L2), passed through the second hole (J2) and the fourth hole (J4); wherein an axial direction of the bending section (311) is deflected towards the first wire (L1) when the first wire (L1) is pulled, or the axial direction of the bending section (311) is deflected towards the second wire (L2) when the second wire (L2) is pulled. ### Claim 16 A method for aiding placement of a nasogastric tube or a nasoduodenal tube comprising steps of: inserting an insertion tube (31) of an endoscope (3) from a second port (22) of a three-way connector (2) then into the proximal end of a placing tube (1) via a first port (21) of the three-way connector (2), through the bending section (311) of the insertion tube (31), and out of the distal end of the placing tube (1); entering the placing tube (1) into a natural tract of a human body; pumping air or fluid into the natural tract of the human body via the third port (23) of the three-way connector (2) in order to inflate a cavity of the human body, if needed; and an image-capturing device (32) of the endoscope (3) capturing images, which are shown on the display unit (4) instantaneously, the placing tube (1) being guided into a target position by viewing the real-time images shown on the display unit (4). ### Claim 17 (depends on 16) A method for aiding placement of a nasogastric tube or a nasoduodenal tube according to claim 16, wherein in the step of inserting an insertion tube (31) of an endoscope (3) from the second port (22) of the three-way connector (2) then into a proximal end of a placing tube (1) via a first port (21) of the three-way connector (2), the endoscope (3) is combined with a cover (33) through a hole structure (331) of the cover (33) then fixed to the second port (22) of the three-way connector (2) so as to let the cover (33) cover the second port (22). ### Claim 18 (depends on 16) A method for aiding placement of a nasogastric tube or a nasoduodenal tube according to claim 16, wherein in the step of an image-capturing device (32) of the endoscope (3) capturing images, which are shown on the display unit (4) instantaneously, the placing tube (1) being guided to a target position by viewing the images and using a direction controller (5) to control the axial direction of the distal end of the endoscope (3) to let the placing tube (1) arrive in the target position. ### Claim 19 (depends on 16) A method for aiding placement of a nasogastric tube or a nasoduodenal tube according to claim 16, wherein in the step of entering the placing tube (1) into a natural tract of a human body with a light source emitting a light into the natural tract of the human body. ### Claim 20 (depends on 19) A method for aiding placement of a nasogastric tube or a nasoduodenal tube according to claim 19, wherein the step of the light source emitting the light into the natural tract of the human body, the images captured by the image-capturing device (32) contain information of internal organs/tissues reflected by the light, the images with information of internal organs/tissues being displayed on the display unit (4).