WO2021084700A1 - 医療用チューブ位置確認システム - Google Patents
医療用チューブ位置確認システム Download PDFInfo
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- WO2021084700A1 WO2021084700A1 PCT/JP2019/042839 JP2019042839W WO2021084700A1 WO 2021084700 A1 WO2021084700 A1 WO 2021084700A1 JP 2019042839 W JP2019042839 W JP 2019042839W WO 2021084700 A1 WO2021084700 A1 WO 2021084700A1
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- light
- intensity
- medical tube
- patient
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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
- A61J15/00—Feeding-tubes for therapeutic purposes
- A61J15/0026—Parts, details or accessories for feeding-tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/06—Devices, other than using radiation, for detecting or locating foreign bodies ; determining position of probes within or on the body of the patient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/06—Devices, other than using radiation, for detecting or locating foreign bodies ; determining position of probes within or on the body of the patient
- A61B5/061—Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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
- A61J15/00—Feeding-tubes for therapeutic purposes
- A61J15/0026—Parts, details or accessories for feeding-tubes
- A61J15/008—Sensor means, e.g. for sensing reflux, acidity or pressure
- A61J15/0088—Sensor means, e.g. for sensing reflux, acidity or pressure for sensing parameters related to the device
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
- A61B2034/2046—Tracking techniques
- A61B2034/2055—Optical tracking systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
- A61B2090/3937—Visible markers
- A61B2090/3945—Active visible markers, e.g. light emitting diodes
Definitions
- the present invention relates to a medical tube position confirmation system.
- nasal tube feeding for patients who have difficulty in taking food and drink orally.
- a soft nasal tube is inserted through the patient's nasal cavity, the tip of the tube reaches the stomach, and a liquid food or nutritional supplement is injected from the base end of the tube.
- a nasal tube coated with lubricating jelly is inserted into the nasal cavity, and the tip of the nasal tube is gradually sent to the back while the patient is asked to repeat the swallowing motion to repeat the nasal operation. This is done by guiding the tip of the tube toward the esophagus to reach the nose.
- Patent Document 1 discloses a detection line having a pair of insulated electric wires and a sensor unit formed at the tip thereof.
- the detection wire is inserted into a medical tube, and when the sensor unit comes into contact with gastric juice, the resistance value between the pair of insulated wires changes. Thereby, by detecting the change in the resistance value between the pair of insulated wires, it can be determined that the sensor unit has come into contact with the gastric juice, and thus it can be determined that the medical tube has reached the stomach correctly.
- Patent Document 2 describes a housing, a connection portion that communicates from the housing to the outside and is connected to the proximal end side of a nasal tube that is inserted into the patient's body, and a sensor element that is arranged inside the housing.
- a nasal tube tip position confirming device including an electronic circuit and a display means is disclosed.
- the electronic circuit outputs the change in air pressure received by the sensor element as an electric signal
- the display means receives the output from the electronic circuit and displays the change in air pressure in a recognizable state.
- the abdomen of the patient is pressed from the outside to cause a change in air pressure in the stomach, and the nasal tube is inserted in an appropriate position by displaying on the display means that the sensor element has undergone the change in air pressure. It is possible to determine whether or not it is.
- an object of the present invention is to provide a medical tube position confirmation system that can more easily confirm the position of the medical tube according to the patient.
- the medical tube position confirmation system is a medical tube position confirmation system in which an end is placed in the stomach and the position of the medical tube for transluminally replenishing nutrients into the body is confirmed.
- It is a light guide body configured to guide the light incident from the incident end and emit it from the emitted end, and is inside the medical tube so that the emitted end is arranged inside the stomach.
- It includes a light guide body to be inserted, a light source that is optically connected to the incident end of the light guide body and emits light including a wavelength transmitted through a living body, and a control unit that controls the intensity of the light emitted by the light source.
- the control unit is characterized in that the intensity of the light emitted from the light source is controlled so as to be included in the intensity range of the first intensity or more and less than the second intensity peculiar to the patient.
- the light including the wavelength transmitted through the living body emitted from the light source is guided inside the light guide body inserted in the medical tube, and is emitted from the emission end portion of the light guide body. .. Then, the intensity of the light is controlled so as to be included in the intensity range of the first intensity or more and less than the second intensity peculiar to the patient. Therefore, the operator can confirm the position of the medical tube by confirming the presence or absence of the transmitted light from the outside of the living body.
- a medical tube position confirmation system that can more easily confirm the position of a medical tube according to a patient.
- FIG. 1 is a diagram schematically showing an example of the configuration of the medical tube position confirmation system 1 according to the embodiment of the present invention.
- the medical tube position confirmation system 1 includes, for example, a light 10, an optical fiber 20, a camera 30, a user terminal 40, and a database 50.
- the user terminal 40 is communicably connected to each of the light 10, the camera 30, and the database 50 via a communication network.
- FIG. 2 is a schematic diagram showing an example of the functional configuration of the light 10.
- the light 10 is an example of a light source and emits light including a wavelength transmitted through a living body.
- the light 10 is provided with, for example, a light emitting unit 11, a drive circuit 12, a processing unit 13, a storage unit 14, and a communication unit 15 in a substantially cylindrical housing made of metal, resin, or the like. It is composed.
- the light emitting unit 11 is composed of, for example, a light emitting LED, and emits light including a wavelength transmitted through a living body.
- a switch (not shown) provided on the light 10 When a switch (not shown) provided on the light 10 is turned on, when electric energy is supplied from a power source (not shown) via the drive circuit 12, the electric energy is converted into light energy to obtain a predetermined wavelength. Emits the light of.
- the light emitting unit 11 is not limited to the light emitting LED, and may be any light emitting body as long as it emits light including a wavelength transmitted through the living body.
- the light 10 is optically connected to the incident end 20I of the optical fiber 20 described later, and the light emitted by the light emitting portion 11 of the light 10 is incident on the incident end 20I of the optical fiber 20.
- the processing unit 13 is, for example, a CPU or the like provided with one or more processors and peripheral circuits thereof, and controls the overall operation of the write 10 based on a program or the like stored in the storage unit 14. Control.
- the processing unit 13 controls the light emission of the light emitting unit 11 via the drive circuit 12 by supplying a predetermined control signal to the drive circuit 12.
- the processing unit 13 may supply the control signal received from the user terminal 40 via the communication unit 15 to the drive circuit 12.
- the control signal may be, for example, a control signal for controlling the light 10 so that the intensity of the light emitted by the light 10 is equal to or higher than the first intensity and lower than the second intensity.
- the storage unit 14 is composed of, for example, a non-volatile memory such as EEPROM (Electronically Erasable and Programmable Read Only Memory), and stores preset control information of the light 10.
- EEPROM Electrically Erasable and Programmable Read Only Memory
- the communication unit 15 includes a communication interface circuit for connecting the light 10 to the communication network, and communicates with the communication network.
- the light 10 may have a simple configuration that does not include the communication unit 15 and the like.
- FIG. 3 shows the light absorption coefficients of oxidized hemoglobin, reduced hemoglobin, melanin, and water, which are the main components of a living body.
- the horizontal axis represents the wavelength (nm) and the vertical axis represents the absorption coefficient.
- absorption by blood that is, hemoglobin
- absorption by water is large in the wavelength region longer than about 950 nm.
- the absorption coefficient of hemoglobin and water is relatively low in the wavelength region of about 650 nm or more and about 950 nm or less. Therefore, it can be said that light in this wavelength region (about 650 nm or more and about 950 nm or less) easily penetrates a living body as compared with other wavelength regions.
- the wavelength of the light emitted by the light emitting unit 11 of the light 10 is not particularly limited as long as it includes a wavelength transmitted through the living body, but as described above, it is preferable to include a wavelength in the range of about 650 nm or more and about 950 nm or less.
- the absorption rate of hemoglobin oxide is particularly low in the wavelength region of about 650 nm or more and about 800 nm or less. Therefore, preferably, the wavelength of the light emitted by the light emitting portion 11 of the light 10 may include at least a part of the wavelength region of about 650 nm or more and about 800 nm or less.
- the absorption rate of reduced hemoglobin is particularly low in the wavelength range of about 800 nm or more and about 950 nm or less. Therefore, preferably, the wavelength of the light emitted by the light emitting portion 11 of the light 10 may include at least a part of the wavelength region of about 800 nm or more and about 950 nm or less.
- the water absorption rate is particularly low in the wavelength range of about 650 nm or more and about 700 nm or less. Therefore, preferably, the wavelength of the light emitted by the light emitting portion 11 of the light 10 may include at least a part of the wavelength region of about 650 nm or more and about 700 nm or less.
- the optical fiber 20 is an example of a light guide, and has, for example, a thin fibrous material having plasticity, and can be inserted into the medical tube T as shown in FIG.
- the optical fiber 20 has a two-layer structure including, for example, a core (not shown) at the center formed of quartz glass, plastic, or the like, and a clad (not shown) covering the periphery thereof.
- an incident end portion 20I for incident light emitted by a light 10 or the like is formed at one end of the optical fiber 20.
- the incident end portion 20I is arranged at a position where the optical fiber 20 can be optically connected to the light 10 in a state where the optical fiber 20 is inserted inside the medical tube T.
- an emission end portion 20E for emitting light is formed at the other end of the optical fiber 20.
- the exit end 20E is arranged inside the stomach (indicated by reference numeral S in FIG. 1) when the optical fiber 20 can reach the stomach correctly while being inserted inside the medical tube T.
- the refractive index of the core of the optical fiber 20 is set higher than the refractive index of the clad of the optical fiber 20. Therefore, the light incident from the incident end portion 20I is totally reflected at the boundary between the core and the clad and propagates in the core. The light that propagates in the core and reaches the exit end 20E is emitted from the exit end 20E. The light emitted from the exit end portion 20E passes through the stomach and other biological parts and is emitted to the outside of the living body, and a part of the light reaches the camera 30.
- FIG. 4 is a schematic diagram showing an example of the functional configuration of the camera 30.
- the camera 30 is an example of an imaging unit, and images a living body (including a part of the living body) based on at least the light emitted from the exit end portion 20E of the fiber 20 and transmitted through the living body, and generates image data. ..
- the camera 30 includes, for example, an image sensor 31, a processing unit 32, a storage unit 33, and a communication unit 34.
- the camera 30 may be, for example, a camera that is particularly sensitive to infrared rays.
- the image sensor 31 is composed of, for example, a CCD (Charge Coupled Devices), a CMOS (Complementary Metal Oxide Signal), or the like, and under the control of the processing unit 32, detects the light focused by a lens (not shown) and emits the light. Convert to an electrical signal.
- a CCD Charge Coupled Devices
- CMOS Complementary Metal Oxide Signal
- the processing unit 32 is, for example, a CPU or the like provided with one or more processors and peripheral circuits thereof, and controls the overall operation of the information processing apparatus based on a program or the like stored in the storage unit 33. To control.
- the processing unit 32 generates image data based on, for example, an electric signal generated by the image sensor 31. Further, the processing unit 32 transmits the generated image data to the user terminal 40 or the database 50 via the communication unit 34.
- the storage unit 33 includes, for example, at least one of a magnetic tape device, a magnetic disk device, and an optical disk device, and stores computer programs, data, and the like used for processing in the processing unit.
- the storage unit 33 is an example of an image data storage unit that stores image data generated by the camera 30 taking an image of a living body.
- the communication unit 34 includes a communication interface circuit for connecting the camera 30 to the communication network, and communicates with the communication network.
- the camera 30 may include a display unit (not shown) for displaying image data or the like generated by the processing unit 32.
- FIG. 5 is a schematic diagram showing an example of the functional configuration of the user terminal 40.
- the user terminal 40 may be any general-purpose information processing terminal, and includes, for example, a communication unit 41, a storage unit 42, a processing unit 43, an operation unit 44, a display unit 45, and the like.
- the communication unit 41 includes a communication interface circuit for connecting the user terminal 40 to the communication network, and communicates with the communication network.
- the storage unit 42 includes, for example, at least one of a magnetic tape device, a magnetic disk device, and an optical disk device, and stores computer programs, data, and the like used for processing in the processing unit.
- the storage unit 42 is an example of an image data storage unit that stores image data generated by the camera 30 taking an image of a living body.
- the storage unit 42 may store the light intensity table shown in FIG.
- the light intensity table is a table in which information indicating a range from the first intensity to the second intensity of light peculiar to a patient is recorded in association with each patient. As shown in FIG. 6, for example, the light intensity table may include "patient ID", "attribute information", "physical information", and "light intensity information".
- the "patient ID” is identification information (ID) for identifying a patient.
- the "attribute information” may be arbitrary information indicating the attributes of the patient, and includes, for example, age (including age), gender, and the like.
- the "physical information” may be arbitrary information about the patient's body, and includes, for example, height, weight, chest circumference, abdominal circumference, body fat percentage, thickness of a predetermined tissue layer such as a fat layer, health examination results, and the like. ..
- Light intensity information is information specific to the patient and indicates a range of light intensity of a predetermined “first intensity” or more and less than a predetermined "second intensity".
- the first intensity may be, for example, a patient-specific light intensity required for the light emitted from the exit end portion 20E of the fiber 20 to pass from the inside of the stomach to the outside of the body.
- the second intensity may be, for example, a patient-specific light intensity required for the light emitted from the exit end 20E of the fiber 20 to pass from the inside of the lungs and trachea to the outside of the body.
- the first intensity and the second intensity may be measurement results obtained by measuring by an arbitrary method for each patient. Further, the first strength and the second strength may be defined from different viewpoints from those described above.
- the first intensity and the second intensity may be defined as the intensity of light required to pass through an arbitrary biological part of the patient, respectively.
- the first intensity and the second intensity may be defined based on the above-mentioned physical information of the patient, respectively.
- the medical tube position confirmation system 1 controls the intensity of the light emitted by the light source so as to be included in the intensity range of the first intensity or more and less than the second intensity peculiar to the patient.
- the first intensity is the intensity of light required for light to pass from the inside of the patient's stomach to the outside of the body
- the second intensity is the intensity of light required for light to pass from the inside of the patient's lungs and trachea to the outside of the body. It may be the required light intensity.
- the second strength is usually larger than the first strength. It is considered that this is because the lungs contain an extremely large number of minute alveoli, which are places for exchanging blood and gas, and therefore the lungs have a stronger effect of blocking light than the stomach.
- the processing unit 43 is, for example, a CPU or the like provided with one or more processors and peripheral circuits thereof, and controls the overall operation of the information processing apparatus based on a program or the like stored in the storage unit. Control.
- the processing unit 43 may control, for example, the intensity of the light emitted by the light 10.
- the processing unit 43 refers to the above-mentioned light intensity table and controls a control signal for controlling the light 10 so that the intensity of the light emitted by the light 10 is equal to or higher than the first intensity and lower than the second intensity. May be transmitted to the light 10 via the communication unit 41.
- the processing unit 43 may analyze the image data received from the camera 30 via the communication network to determine whether or not the position of the medical tube T is appropriate.
- the processing unit 13 may transmit, for example, image data received from the camera 30 via the communication network to the database 50. Further, the processing unit 13 may transmit, for example, a control signal for switching ON / OFF of the switch of the light 10 to the light 10.
- the operation unit 44 is composed of, for example, a touch panel, key buttons, etc., receives an operation of inputting characters, numbers, symbols, etc. by the user, and supplies a signal corresponding to the operation to the processing unit.
- the display unit 45 is composed of, for example, a liquid crystal display, an organic EL (Electro-Luminescence) display, or the like, and displays an image or the like based on display data supplied from the processing unit.
- the database 50 is, for example, a database managed by a medical institution such as a hospital, and includes at least one of a magnetic tape device, a magnetic disk device, and an optical disk device.
- the database 50 receives image data from, for example, the camera 30 or the user terminal 40, and stores the image data. That is, the database 50 is an example of an image data storage unit that stores image data generated by the camera 30 taking an image of a living body.
- the database 50 may be connected to an arbitrary external information processing device such as a management server used by a medical institution or the like via a communication network.
- the external information processing device may acquire the image data stored in the database 50 and process the image data according to various purposes.
- the operator confirms the end portion of the medical tube T in the nasal cavity of the patient or the like, and inserts the optical fiber 20 into the inside of the medical tube T with the exit end portion 20E first by a predetermined length. To do.
- the switch (not shown) provided on the light 10 when the switch (not shown) provided on the light 10 is turned on, the light 10 emits light.
- the operator may operate the switch of the light 10 to make the light 10 emit light.
- the operator may make the light 10 emit light by operating the user terminal 40 and transmitting a control signal for turning on the switch of the light 10 from the user terminal 40 to the light 10.
- the light 10 emits light the light emitted by the light 10 is incident on the incident end portion 20I of the optical fiber 20.
- the user terminal 40 when the user terminal 40 receives the input of the patient ID by the operator, the user terminal 40 refers to the light intensity table and generates a control signal for controlling the light 10.
- the control signal is a control signal for controlling the light 10 so that the intensity of the light emitted by the light 10 is included in the intensity range of the first intensity or more and less than the second intensity corresponding to the patient ID that received the input. is there.
- the light 10 receives the control signal from the user terminal 40, the light 10 adjusts the light intensity so as to be in the intensity range of the first intensity or more and less than the second intensity according to the control signal.
- the light incident on the incident end 20I propagates inside the optical fiber 20 by total reflection and reaches the exit end 20E.
- the light that has reached the exit end 20E is emitted from the exit end 20E and passes through the patient's living body.
- the intensity of the light emitted by the light 10 is equal to or higher than the first intensity peculiar to the patient necessary for transmitting from the inside of the stomach to the outside of the body, and is necessary for transmitting from the inside of the lungs and trachea to the outside of the body.
- the intensity range is adjusted to less than the second intensity specific to the patient. Therefore, if the light can be confirmed, it can be determined that the medical tube T has reached the stomach properly, and if the light cannot be confirmed, it is determined that the medical tube T has not reached the stomach. can do.
- the position of the light may be confirmed by either a visual method by an operator or a method using image data generated by the camera 30.
- the user terminal 40 receives the image data generated by the camera 30 from the camera 30 based on at least the light transmitted through the stomach and other biological parts. Then, the user terminal 40 analyzes the image data to determine whether or not the position of the light corresponds to the stomach.
- 1 Medical tube position confirmation system, 10 ... Light, 11 ... Light emitting unit, 12 ... Drive circuit, 13 ... Processing unit, 14 ... Storage unit, 15 ... Communication unit, 20 ... Optical fiber, 20I ... Incident end, 20E ... Exit end, 30 ... Camera, 31 ... Image sensor, 32 ... Processing unit, 33 ... Storage unit, 34 ... Communication unit, 40 ... User terminal, 41 ... Communication unit, 42 ... Storage unit, 43 ... Processing unit, 44 ... operation unit, 45 ... display unit
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Abstract
Description
図1は、本発明の実施形態に係る医療用チューブ位置確認システム1の構成の一例を模式的に示す図である。図1に示すとおり、医療用チューブ位置確認システム1は、例えば、ライト10と、光ファイバ20と、カメラ30と、ユーザ端末40と、データベース50とを備える。ユーザ端末40は、通信ネットワークを介して、ライト10、カメラ30、及びデータベース50それぞれと通信可能に接続されている。
(2-1)ライト10
図2は、ライト10の機能上の構成の一例を示す模式的な図である。ライト10は、光源の一例であって、生体を透過する波長を含む光を発する。ライト10は、例えば、発光部11と、駆動回路12と、処理部13と、記憶部14と、通信部15とが、金属や樹脂等で形成された略円筒状の筐体内に設けられて構成される。
光ファイバ20は、導光体の一例であって、例えば、可塑性を有する細い繊維状を呈しており、図1に示すとおり、医療用チューブTの内部に挿入可能である。光ファイバ20は、例えば、石英ガラスやプラスチック等によって形成された中心部のコア(不図示)と、その周囲を覆うクラッド(不図示)とから成る二層構造を有している。
図4は、カメラ30の機能上の構成の一例を示す模式的な図である。
図5は、ユーザ端末40の機能上の構成の一例を示す模式的な図である。ユーザ端末40は、任意の汎用的な情報処理端末であってよく、例えば、通信部41、記憶部42、処理部43、操作部44、及び表示部45等を備える。
データベース50は、例えば、病院等の医療機関が管理するデータベースであって、磁気テープ装置、磁気ディスク装置、又は光ディスク装置のうちの少なくとも一つを備える。データベース50は、例えば、カメラ30又はユーザ端末40から画像データを受信し、これを記憶する。すなわち、データベース50は、カメラ30が生体を撮像することにより生成された画像データを記憶する画像データ記憶部の一例である。データベース50は、例えば、医療機関等が利用する管理サーバ等の任意の外部情報処理装置と通信ネットワークを介して接続されていてもよい。当該外部情報処理装置は、データベース50に記憶された画像データを取得し、当該画像データについて種々の目的に応じた処理を行ってもよい。
次に、医療用チューブ位置確認システム1の使用方法及び動作を説明する。
Claims (7)
- 端部を胃に留置し経管的に栄養を体内に補給するための医療用チューブの位置を確認する医療用チューブ位置確認システムであって、
入射端部から入射する光を導光して出射端部から出射するように構成された導光体であって、前記出射端部が胃の内部に配置されるように医療用チューブ内に挿入可能に構成される導光体と、
前記導光体の前記入射端部に光学的に接続され、生体を透過する波長を含む光を発する光源と、
前記光源が発する光の強度を制御する制御部と、
を備え、
前記制御部は、前記光源が発する光の強度を、患者に固有の第1強度以上且つ第2強度未満の強度範囲に含まれるように制御することを特徴とする医療用チューブ位置確認システム。 - 前記制御部は、患者毎に当該患者に固有の前記第1強度及び前記第2強度が記録されたテーブルを参照して、制御信号を生成し、当該制御信号を前記光源に供給することにより、前記光源が発する光の強度を制御する、請求項1に記載の医療用チューブ位置確認システム。
- 前記第1強度は、当該患者の胃の内部から体外へ光が透過するために必要な光の強度である、請求項1又は2に記載の医療用チューブ位置確認システム。
- 前記第2強度は、当該患者の肺及び気管の内部から体外へ光が透過するために必要な光の強度である、請求項1から3のいずれか一項に記載の医療用チューブ位置確認システム。
- 前記導光体の前記出射端部から出射されて生体を透過した光に少なくとも基づいて生体を撮像する撮像部を更に備える、請求項1から4のいずれか一項に記載の医療用チューブ位置確認システム。
- 前記撮像部が生体を撮像することにより生成された画像データを記憶する画像データ記憶部を更に備える、請求項5に記載の医療用チューブ位置確認システム。
- 端部を胃に留置し経管的に栄養を体内に補給するための医療用チューブの位置を確認する方法であって、
入射端部から入射する光を導光して出射端部から出射するように構成された導光体を、前記出射端部から先に所定の長さだけ前記医療用チューブ内に挿入するステップと、
生体を透過する波長を含む光を発する光源を、前記導光体の前記入射端部に光学的に接続するステップと、
前記光源を発光させるステップと、
前記光源が発する光の強度を、患者に固有の第1強度以上、且つ、当該患者に固有の第2強度未満である強度範囲に含まれるように制御するステップと、を含むことを特徴とする方法。
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CN201980101924.1A CN114980853A (zh) | 2019-10-31 | 2019-10-31 | 医疗用导管位置确认系统 |
US17/755,511 US20220400974A1 (en) | 2019-10-31 | 2019-10-31 | Medical tube position confirmation system |
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