CN109549629B - Gastrointestinal motility detection device - Google Patents
Gastrointestinal motility detection device Download PDFInfo
- Publication number
- CN109549629B CN109549629B CN201811447549.XA CN201811447549A CN109549629B CN 109549629 B CN109549629 B CN 109549629B CN 201811447549 A CN201811447549 A CN 201811447549A CN 109549629 B CN109549629 B CN 109549629B
- Authority
- CN
- China
- Prior art keywords
- guide wire
- pressure sensor
- data
- connecting guide
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/42—Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00105—Constructional details of the endoscope body characterised by modular construction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/273—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the upper alimentary canal, e.g. oesophagoscopes, gastroscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/42—Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems
- A61B5/4222—Evaluating particular parts, e.g. particular organs
- A61B5/4238—Evaluating particular parts, e.g. particular organs stomach
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/42—Detecting, measuring or recording for evaluating the gastrointestinal, the endocrine or the exocrine systems
- A61B5/4222—Evaluating particular parts, e.g. particular organs
- A61B5/4255—Intestines, colon or appendix
Abstract
A gastrointestinal motility detection device comprises a connecting guide wire catheter, a pressure sensor probe and a data connector; one end of the connecting guide wire catheter is provided with a pressure sensor probe, and the other end of the connecting guide wire catheter is provided with a data connector; the connecting guide wire catheter is used for transmitting data acquired by the pressure sensor probe to the data connector; the invention adopts the high-precision sensor, the end part of the sensor is provided with the air-tight structure, the external environment does not influence the precision of the sensor during measurement, the measurement precision is high, and the noise is automatically reduced during the measurement process, thereby reducing the measurement error.
Description
Technical Field
The invention belongs to the field of human body detection devices, and particularly relates to a gastrointestinal motility detection device.
Background
The existing gastrointestinal motility detection devices are imported products, are expensive and have limited measurement range. At present, no mechanism for researching, developing and manufacturing the products exists in China. Gastrointestinal motility detection device can carry out the relevant measurement of intestines and stomach dynamics, and the intestines and stomach dynamics that carries on relevant position that can be accurate according to gastroscope display image detects. The gastrointestinal motility detector is developed in the United states, Sweden and other countries, is widely applied to various countries in the world, and foreign equipment is introduced into many large comprehensive hospitals in China to measure the gastrointestinal kinetics. Gastrointestinal motility test devices suffer from the following deficiencies and drawbacks: 1. the position of the piezometer tube cannot be accurately judged through blind intubation of the nasal cavity, so that the measurement result is influenced; 2. only the pressure of the stomach and the esophagus can be measured, and the measuring range is very limited; 3. the measurement accuracy is not high, and slight movement in the measurement process can cause result deviation.
Disclosure of Invention
The invention aims to provide a gastrointestinal motility detection device to solve the problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a gastrointestinal motility detection device comprises a connecting guide wire catheter, a pressure sensor probe and a data connector; one end of the connecting guide wire catheter is provided with a pressure sensor probe, and the other end of the connecting guide wire catheter is provided with a data connector; the connecting guide wire catheter is used for transmitting data acquired by the pressure sensor probe to the data connector;
the pressure sensor probe comprises a pressure sensor, a rubber transition sleeve, a packaging ring and an air-tight structure; the pressure sensor is arranged at the end part of the connecting guide wire catheter, and one end of the rubber transition sleeve is sleeved at the outer sides of the pressure sensor and the end part of the connecting guide wire catheter; the other end of the rubber transition sleeve is fixedly connected with the packaging ring, an air tightness structure is arranged at the opening of the packaging ring, and the air tightness structure is used for isolating the pressure sensor from the outside.
Further, the air-tight structure comprises an inner packaging film of the sensor and an outer packaging sleeve of the sensor; the sensor outer packaging sleeve is of an annular structure, the sensor inner packaging film is arranged in the sensor outer packaging sleeve, and the sensor outer packaging sleeve is connected with the packaging ring; the air pressure inside and outside the airtight structure is balanced.
Furthermore, the connecting guide wire catheter comprises a data wire outer coating sleeve, a transmission data wire, a medical flexible guide wire and a coating catheter; three data transmission lines are axially arranged on the outer side of the medical flexible guide wire to form a connecting guide wire guide pipe inner core, and the cross section of the connecting guide wire guide pipe inner core is in an equilateral triangle shape; a coating catheter is sleeved outside the inner core of the connecting guide wire catheter; the three transmission data lines are all connected with the pressure sensor.
Further, the data connector comprises a data plug, a plastic adapter and a plastic buffer transition connector; the one end of plastics buffering crossover sub is connected with the cladding pipe of being connected the seal wire pipe, and the other end of plastics buffering crossover sub is connected with the one end of plastic adapter, and the other end cladding of plastic adapter is in the data plug outside, and the inside data plug of plastic adapter and plastics buffering crossover sub is connected with three transmission data lines.
Further, the data plug is one of a USB-TYPE-A, USB-TYPE-B, Micro-B, USB-TYPE-C or Lightning interface.
Further, the data connector is connected with a display device. The pressure sensor is model BMP 280.
Compared with the prior art, the invention has the following technical effects:
according to the invention, the high-precision sensor is adopted, the end part of the sensor is provided with the air-tight structure, the external environment does not influence the precision of the sensor during measurement, the measurement precision is high, and the control system can automatically realize automatic noise reduction of output signals according to the measurement result through an optimized adaptive filtering method in the measurement process, so that the measurement error is reduced.
The medical flexible guide wire ensures the flexibility of the detection device.
The invention is used in cooperation with a gastroscope in the using process, does not need blind insertion through a nasal cavity, and can accurately determine the measuring position according to the gastroscope image; the invention can measure according to the moving position of the gastroscope, and the measuring range is enlarged;
drawings
Fig. 1 is a schematic front view of the present invention.
FIG. 2 is a schematic view of a pressure sensor probe of the present invention.
Fig. 3 is a schematic diagram of a data connector of the present invention.
Fig. 4a and 4b are schematic views of the sensor end structure of the present invention.
Fig. 5 is a schematic diagram of a sensor end configuration of the present invention.
Wherein: 1-connecting a guide wire catheter, 2-a pressure sensor probe, 3-a data connector, 4-a rubber transition sleeve, 5-a packaging ring, 6-an airtight structure, 7-a data plug, 8-a plastic adapter, 9-a plastic buffer transition connector, 10-a sensor inner packaging film, 11-a sensor outer packaging sleeve, 12-a pressure sensor, 14-a data line outer coating sleeve, 15-a transmission data line, 16-a medical flexible guide wire and 17-a coating catheter.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
a gastrointestinal motility detection device comprises a connecting guide wire catheter 1, a pressure sensor probe 2 and a data connector 3; one end of the connecting guide wire catheter 1 is provided with a pressure sensor probe 2, and the other end is provided with a data connector 3; the connecting guide wire catheter 1 is used for transmitting data collected by the pressure sensor probe 2 to the data connector 3;
the pressure sensor probe 2 comprises a pressure sensor 12, a rubber transition sleeve 4, a packaging ring 5 and an air-tight structure 6; the pressure sensor is arranged at the end part of the connecting guide wire catheter 1, and one end of the rubber transition sleeve 4 is sleeved at the outer sides of the pressure sensor 12 and the end part of the connecting guide wire catheter 1; the other end of the rubber transition sleeve 4 is fixedly connected with a packaging ring 5, an air tightness structure 6 is arranged at the opening of the packaging ring 5, and the air tightness structure 6 is used for isolating the pressure sensor 12 from the outside.
The air-tight structure 6 comprises a sensor inner packaging film 10 and a sensor outer packaging sleeve 11; the sensor outer packaging sleeve 11 is of an annular structure, the sensor inner packaging film 10 is arranged in the sensor outer packaging sleeve 11, and the sensor outer packaging sleeve 11 is connected with the packaging ring 5; the air pressure inside and outside the air-tight structure 6 is balanced.
The connecting guide wire catheter 1 comprises a data wire outer coating sleeve 14, a transmission data wire 15, a medical flexible guide wire 16 and a coating catheter 17; three data transmission lines 15 are axially arranged on the outer side of the medical flexible guide wire 16 to form a connecting guide wire catheter inner core, and the cross section of the connecting guide wire catheter inner core is in an equilateral triangle shape; a cladding catheter 17 is sleeved outside the inner core of the connecting guide wire catheter; three transmission data lines 15 are connected to the pressure sensor 12. The different connection pins of the pressure sensor are connected to different transmission data lines 15 for transmitting pressure signals and for supplying power to the sensor.
The medical flexible guide wire 16 is a medical mechanical stainless steel guide wire. The outer layer of the data transmission connecting line is required to be coated by a plastic insulating line, and the number of the data transmission connecting line is configured according to the signal output size of the sensor; the mechanical medical guide wire and the data transmission line are tightly matched in the outer-layer cladding catheter, so that the conduction toughness can be achieved through the guide wire, and signals can be transmitted through the electric wire; two ends of a guide wire and a data transmission connecting wire which are coated by the outer layer coating catheter need to be sealed, and the catheter needs to be subjected to acid-proof treatment;
the data connector 3 comprises a data plug 7, a plastic adapter 8 and a plastic buffer transition connector 9; the one end of plastics buffering transition joint 9 is connected with the cladding pipe 17 of being connected seal wire pipe 1, and the other end of plastics buffering transition joint 9 is connected with the one end of plastic adapter 8, and the other end cladding of plastic adapter 8 is in the data plug 7 outside, and the inside data plug 7 of plastic adapter 8 and plastics buffering transition joint 9 is connected with three transmission data lines 15.
The data plug 7 is one of a USB-TYPE-A, USB-TYPE-B, Micro-B, USB-TYPE-C or Lightning interface.
The data connector 3 is connected with a display device.
A method of testing a gastrointestinal motility testing device, comprising the steps of:
The working process of the invention is as follows:
when the functional gastrointestinal disease dynamic detection device is installed to work, firstly, the sterilized sealed packaging bag is confirmed to be intact, and all accessories of the connecting guide wire catheter, the pressure sensor connector and the data connector in the packaging bag are completely contained in the packaging bag. The gastrointestinal disease dynamic detection device is taken out, the integrity of each part is measured, each joint cannot be damaged, and the device is ensured to be in a sealed state in the use process.
The pressure of the functional gastrointestinal disease dynamic detection device is set to zero: before measurement, the pressure value in the human body is needed to be calibrated again. Firstly, a functional gastrointestinal motility detection device is connected, whether pressure reading exists or not is checked at a display end, whether the connection is normal or not is checked, and at the moment, the pressure is introduced into a measurement system. Before inserting the stomach tube, need confirm that the pressure value adjusts to zero, need to set up the sensor to atmospheric pressure and carry out the calibration, need place sensor one end in atmospheric pressure 3min, the system will carry out the pressure according to atmospheric pressure point by point and return to zero. And according to the pressure change of the sensor under the atmospheric pressure, carrying out noise reduction and automatic calibration on the fluctuation electric signal obtained by transmission.
And (3) detection process: after performing the pressure calibration, a measurement of the gastric motility pressure is performed. Firstly, a guide wire of the gastric motility detection device is conveyed to a gastroscope measuring port along a gastroscope, the display change of pressure is carefully observed in the conveying process, and after the guide wire is conveyed to a stable position, the pressure is ensured to be zero. The guide wire can not be bent and folded in the conveying process, and the mechanical property of the guide wire in the conveying process is ensured not to be changed. When gastroscopic measurement is carried out, a pressure measurement port is slowly conveyed along the esophagus, and a recording button of a software operation interface is clicked during measurement. At the beginning of the delivery, the position correction button is clicked on the throat part, and during the measurement along the way, the sensor performs pressure measurement at regular time intervals. When the gastroscope reaches the bottom of the esophagus, the position calibration is performed again. And (5) carrying out related position pressure measurement according to real-time image display of the gastroscope. When pressure abnormality occurs, gastric motility detection can be carried out according to gastroscope observation conditions and pressure at corresponding positions.
Claims (4)
1. The gastrointestinal motility detection device is characterized by comprising a connecting guide wire catheter (1), a pressure sensor probe (2) and a data connector (3); one end of the connecting guide wire catheter (1) is provided with a pressure sensor probe (2), and the other end is provided with a data connector (3); the connecting guide wire catheter (1) is used for transmitting data collected by the pressure sensor probe (2) to the data connector (3);
the pressure sensor probe (2) comprises a pressure sensor (12), a rubber transition sleeve (4), a packaging ring (5) and an air-tight structure (6); the pressure sensor is arranged at the end part of the connecting guide wire catheter (1), and one end of the rubber transition sleeve (4) is sleeved at the outer sides of the pressure sensor (12) and the end part of the connecting guide wire catheter (1); the other end of the rubber transition sleeve (4) is fixedly connected with a packaging ring (5), an air tightness structure (6) is arranged at an opening of the packaging ring (5), and the air tightness structure (6) is used for isolating the pressure sensor (12) from the outside; the air-tight structure (6) comprises an inner sensor packaging film (10) and an outer sensor packaging sleeve (11); the sensor outer packaging sleeve (11) is of an annular structure, the sensor inner packaging film (10) is arranged in the sensor outer packaging sleeve (11), and the sensor outer packaging sleeve (11) is connected with the packaging ring (5); the air pressure inside and outside the air-tight structure (6) is balanced;
the connecting guide wire catheter (1) comprises a data wire outer coating sleeve (14), a transmission data wire (15), a medical flexible guide wire (16) and a coating catheter (17); three data transmission lines (15) are axially arranged on the outer side of the medical flexible guide wire (16) to form a connecting guide wire guide pipe inner core, and the cross section of the connecting guide wire guide pipe inner core is in an equilateral triangle shape; a cladding catheter (17) is sleeved outside the inner core of the connecting guide wire catheter; the three transmission data lines (15) are all connected with the pressure sensor (12).
2. A gastrointestinal motility detection device as claimed in claim 1, wherein the data connector (3) comprises a data plug (7), a plastic adapter (8) and a plastic buffer transition connector (9); the one end of plastics buffering transition joint (9) is connected with cladding pipe (17) of being connected seal wire pipe (1), and the other end and the one end of plastics adapter (8) of plastics buffering transition joint (9) are connected, and the other end cladding of plastics adapter (8) is in the data plug (7) outside, and inside data plug (7) of plastics adapter (8) and plastics buffering transition joint (9) are connected with three transmission data lines (15).
3. A gastrointestinal motility detection device according to claim 2, wherein the data plug (7) is one of USB-TYPE-A, USB-TYPE-B, Micro-B, USB-TYPE-C or Lightning interface.
4. A gastrointestinal motility detection device as claimed in claim 1, wherein the data connector (3) is connected to a display device; the pressure sensor is model BMP 280.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811447549.XA CN109549629B (en) | 2018-11-29 | 2018-11-29 | Gastrointestinal motility detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811447549.XA CN109549629B (en) | 2018-11-29 | 2018-11-29 | Gastrointestinal motility detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109549629A CN109549629A (en) | 2019-04-02 |
| CN109549629B true CN109549629B (en) | 2021-09-28 |
Family
ID=65868035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811447549.XA Active CN109549629B (en) | 2018-11-29 | 2018-11-29 | Gastrointestinal motility detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109549629B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110772214B (en) * | 2019-11-06 | 2021-09-07 | 西安交通大学第二附属医院 | Thoracic surgery endoscope system |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU227201B1 (en) * | 2003-11-04 | 2010-11-29 | Domokos Dr Boda | Tonometric device for testing of deficient in respiratory and perfusion-disturbances |
| US8262645B2 (en) * | 2007-11-21 | 2012-09-11 | Actuated Medical, Inc. | Devices for clearing blockages in in-situ artificial lumens |
| GB0800981D0 (en) * | 2008-01-18 | 2008-02-27 | Plaque Attack Ltd | Catheter |
| GB201105622D0 (en) * | 2011-04-01 | 2011-05-18 | Phangenesis Ltd | Multi functional catheter |
| WO2013061280A1 (en) * | 2011-10-28 | 2013-05-02 | Hemodynamix Medical Systems Inc. | Fluid temperature and flow sensor apparatus and system for cardiovascular and other medical applications |
| US20140276110A1 (en) * | 2013-03-14 | 2014-09-18 | Volcano Corporation | Imaging guidewire system with flow visualization |
| US9066726B2 (en) * | 2013-03-15 | 2015-06-30 | Medtronic Ardian Luxembourg S.A.R.L. | Multi-electrode apposition judgment using pressure elements |
| CN203263994U (en) * | 2013-05-17 | 2013-11-06 | 西安交通大学医学院第二附属医院 | Oral-cavity-passing nasal catheter extractor |
| WO2015073817A1 (en) * | 2013-11-15 | 2015-05-21 | Acist Medical Systems, Inc. | Multi-sensor lesion assessment device and method |
| CN104398247A (en) * | 2014-11-28 | 2015-03-11 | 中山市普利斯微创介入医械有限公司 | Pressure measuring catheter |
| CN104586368A (en) * | 2015-02-05 | 2015-05-06 | 上海英诺伟医疗器械有限公司 | Cavity pressure monitoring device |
| CN104905781A (en) * | 2015-02-13 | 2015-09-16 | 林昌军 | Encephalic physiological parameter collecting device and application |
| CN105662518B (en) * | 2016-03-09 | 2018-06-05 | 中国人民解放军第三军医大学第一附属医院 | Intelligent uterine hemostasis air bag |
| US11766513B2 (en) * | 2016-10-09 | 2023-09-26 | The Regents Of The University Of California | System and method for removal of gastric air from premature infants on nasal CPAP |
| CN207429400U (en) * | 2017-02-09 | 2018-06-01 | 北京雅果科技有限公司 | Multifunctional stomach tube |
| CN106691866B (en) * | 2017-02-09 | 2024-03-08 | 北京雅果科技有限公司 | Initialization method of multifunctional stomach tube and pressure detection unit thereof |
| CN107462366A (en) * | 2017-07-10 | 2017-12-12 | 北京万特福医疗器械有限公司 | A kind of intracranial pressure sensor and its scaling method that can be demarcated in body |
| CN107625516A (en) * | 2017-09-04 | 2018-01-26 | 长飞光纤光缆股份有限公司 | A kind of insertion type medical probe of multi-parameter |
| CN207409771U (en) * | 2017-11-18 | 2018-05-25 | 深圳市谊诚精密模具有限公司 | A kind of anti-interference data cable |
-
2018
- 2018-11-29 CN CN201811447549.XA patent/CN109549629B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109549629A (en) | 2019-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102137620B (en) | Device, apparatus and method for obtaining physiological signals by way of feeding tube | |
| US5752921A (en) | Method and apparatus for determining tracheal pressure | |
| CN109549629B (en) | Gastrointestinal motility detection device | |
| US9180268B2 (en) | Cuff pressure measurement device for a tracheal tube | |
| CN102908133A (en) | Esophagus vein blood pressure measuring instrument | |
| CN112891714A (en) | Sealer for colon and rectum operation | |
| CN214965534U (en) | Nasal gastrointestinal tube with pressure monitoring function | |
| US20210030629A1 (en) | System and Method for Acoustic Sensing to Verify Proper Nasogastric Tube Placement | |
| CN102670186B (en) | Venous pressure measuring probe as well as mounting method | |
| CN103877656B (en) | The manufacture method of a kind of laryngeal mask, laryngeal mask and the intubation procedure of laryngeal mask | |
| CN204839544U (en) | Alimentary canal manograph for gastroenterology | |
| CN209437848U (en) | It is a kind of can real-time detection humidity tracheal tube | |
| CN114796770B (en) | Artificial airway air bag for multi-point position bag wall pressure measurement | |
| CN216525740U (en) | Drug in-vitro release test system | |
| CN117065188B (en) | Ileus catheter with pressure sensing function | |
| CN103877668A (en) | Disposable urethral catheter for measuring body temperature and abdominal pressure | |
| CN203016931U (en) | Esophagus vein blood pressure measuring instrument | |
| CN209136594U (en) | New catheter for invasive angiosthenia monitoring | |
| CN112546403A (en) | Stomach tube with core temperature detects and prevents palirrhea effect of esophagus | |
| CN111341185A (en) | Digestive tract pressure measurement simulation device, simulation system and method | |
| CN214232108U (en) | Stomach tube subassembly | |
| CN213526983U (en) | Tracheal catheter device | |
| CN202654119U (en) | Fluid pressure measuring balloon pipe | |
| CN214232109U (en) | Stomach tube subassembly | |
| CN219229868U (en) | Anti-pulling pressure measuring catheter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |