CN111166318A - Capsule type pressure measuring device - Google Patents
Capsule type pressure measuring device Download PDFInfo
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- CN111166318A CN111166318A CN202010160373.0A CN202010160373A CN111166318A CN 111166318 A CN111166318 A CN 111166318A CN 202010160373 A CN202010160373 A CN 202010160373A CN 111166318 A CN111166318 A CN 111166318A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/03—Measuring fluid pressure within the body other than blood pressure, e.g. cerebral pressure ; Measuring pressure in body tissues or organs
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- 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
- A61B1/041—Capsule endoscopes for imaging
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/03—Measuring fluid pressure within the body other than blood pressure, e.g. cerebral pressure ; Measuring pressure in body tissues or organs
- A61B5/033—Uterine pressure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/03—Measuring fluid pressure within the body other than blood pressure, e.g. cerebral pressure ; Measuring pressure in body tissues or organs
- A61B5/036—Measuring fluid pressure within the body other than blood pressure, e.g. cerebral pressure ; Measuring pressure in body tissues or organs by means introduced into body tracts
- A61B5/037—Measuring oesophageal pressure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0247—Pressure sensors
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Abstract
本申请公开了一种胶囊式压力测量装置，该胶囊式压力测量装置包括胶囊壳体、图像获取组件和液柱式压力传感器，所述所述图像获取组件设置于所述胶囊壳体内，所述液柱式压力传感器贴设在所述胶囊壳体的外表面，所述图像获取组件能够获取所述液柱式压力传感器的图像从而读取所述液柱式压力传感器的压力值。本申请的液柱式压力传感器由于是贴设于胶囊壳体的外表面，其并不占用胶囊壳体内部的空间，所以可以将胶囊壳体做得更小，又因为液柱式压力传感器本身比较薄，其占用胶囊壳体外部的空间也极少，因此可以将胶囊式压力测量装置整体体积做得更小。
The present application discloses a capsule-type pressure measurement device, the capsule-type pressure measurement device includes a capsule housing, an image acquisition component and a liquid column pressure sensor, the image acquisition component is arranged in the capsule housing, and the The liquid-column pressure sensor is attached to the outer surface of the capsule shell, and the image acquisition component can acquire the image of the liquid-column pressure sensor to read the pressure value of the liquid-column pressure sensor. Since the liquid column pressure sensor of the present application is attached to the outer surface of the capsule shell, it does not occupy the space inside the capsule shell, so the capsule shell can be made smaller, and because the liquid column pressure sensor itself It is relatively thin and occupies very little space outside the capsule housing, so the overall volume of the capsule pressure measuring device can be made smaller.
Description
Technical Field
The application relates to the technical field of pressure measurement, in particular to a capsule type pressure measurement device with a liquid column type pressure sensor.
Background
The existing capsule type pressure measuring device for measuring the pressure of the alimentary canal, the uterus or the vagina generally adopts an MEMS (Micro-Electro-Mechanical System; Chinese: Micro Electro Mechanical System) sensor for measurement, the MEMS sensor needs secondary packaging to meet the biocompatibility requirement, but the secondary packaging causes influence on the output range and precision of the sensor, the process procedure is complex, the size is large, and the miniaturization of the capsule device is not facilitated.
Disclosure of Invention
In order to overcome the problems of the prior art, the present application mainly aims to provide a capsule type pressure measuring device with simple process and small volume.
In order to achieve the above purpose, the following technical solutions are specifically adopted in the present application:
the application provides a capsule type pressure measurement device, this capsule type pressure measurement device include capsule shell, image acquisition subassembly and liquid column pressure sensor, the image acquisition subassembly set up in the capsule shell, liquid column pressure sensor pastes and establishes the surface of capsule shell, the image acquisition subassembly can acquire thereby liquid column pressure sensor's image reads liquid column pressure sensor's pressure value.
Preferably, the capsule shell comprises a cylindrical surface, and the liquid column type pressure sensor is attached to the cylindrical surface of the capsule shell.
Preferably, the liquid column type pressure sensor comprises a liquid bag, an imageable liquid and a graduated liquid column, the liquid bag is communicated with the graduated liquid column, and the imageable liquid is arranged in the liquid bag.
Preferably, the liquid sac is provided with an accommodating cavity, the graduated liquid column is provided with a liquid column cavity, the accommodating cavity is communicated with the liquid column cavity, and the imageable liquid is arranged in the accommodating cavity;
when the liquid sac is pressed, the accommodating cavity can deform and can press the imageable liquid in the accommodating cavity into the liquid column cavity, and the imageable liquid can correspond to different scales when flowing in the liquid column cavity.
Preferably, the sac comprises a pressure-sensitive membrane enclosing the receiving cavity;
when the pressure is applied, the pressure-sensitive film can deform towards the inside of the containing cavity, and when the pressure disappears, the pressure-sensitive film can restore to the original state.
Preferably, the liquid sac and the graduated liquid column both comprise pressure-sensitive films, and the pressure-sensitive films enclose the accommodating cavity and the liquid column cavity; the sectional area of the containing cavity is larger than that of the liquid column cavity.
Preferably, the liquid bag comprises a gas cavity and a liquid cavity, the gas cavity and the liquid cavity are separated by a driving plate, and the volumes of the gas cavity and the liquid cavity are adjusted by the movement of the driving plate;
the liquid cavity is provided with the imageable liquid, the imageable liquid in the liquid cavity can enter the liquid column cavity, and the imageable liquid in the liquid column cavity can also enter the liquid cavity.
Preferably, the imageable liquid is one or more of methylene blue, beet red, vitamin B.
Preferably, the capsule type pressure measuring device further comprises a data transmission assembly, the image acquisition assembly comprises a camera and an image sensor, the image sensor is respectively connected with the camera and the data transmission assembly, and the liquid column with the scales is located within the visual angle range of the camera.
preferably, the camera has an effective imaging angle α 1, and the capsule shell includes a transparent portion capable of covering a space where the effective imaging angle α 1 is located;
the image sensor is provided with a display image angle α 2, the transparent part can cover the space where the display image angle α 2 is located, and α 1 is larger than α 2;
the liquid column type pressure sensor is arranged on the outer wall of the capsule shell and located in a space between the effective imaging angle α 1 and the display image angle α 2, and the data transmission assembly can read data of the liquid column type pressure sensor.
preferably, the camera has an effective imaging angle α 1, and the capsule shell includes a transparent portion capable of covering a space where the effective imaging angle α 1 is located;
the image sensor is provided with a display image angle α 2, the transparent part can cover the space where the display image angle α 2 is located, and α 1 is larger than α 2;
the liquid column type pressure sensor is arranged on the outer wall of the capsule shell and located in a space occupied by the display image angle α 2, and the image sensor can read and identify data of the liquid column type pressure sensor.
Preferably, the capsule shell comprises a rear shell and a front shell, the rear shell and the front shell are connected in a matching mode to form a cavity together, the data transmission assembly, the image sensor and the camera are arranged in the cavity respectively, the front shell is transparent, the camera is arranged at one end close to the front shell, the front shell comprises a cylindrical surface, and the liquid column type pressure sensor is attached to the cylindrical surface of the front shell or the end of the front shell.
Preferably, the capsule shell comprises a rear shell and a front shell, the rear shell and the front shell are connected in a matched mode to form a cavity together, the data transmission assembly, the image sensor and the camera are arranged in the cavity respectively, the front shell and the rear shell are both transparent, the two ends of the front shell and the two ends of the rear shell are both provided with cameras, the liquid column type pressure sensor is attached to the cylindrical surface of the front shell, the cylindrical surface of the rear shell, the end of the front shell or the end of the rear shell, or the liquid column type pressure sensor is attached to the rear shell and the front shell simultaneously.
Preferably, the capsule type pressure measuring device further comprises a plurality of liquid column type pressure sensors, and the measuring range and the type of each liquid column type pressure sensor are the same or different.
Preferably, the liquid sac and the graduated liquid column are each made of a biocompatible material.
Compared with the prior art, the liquid column type pressure sensor can meet the biocompatibility requirement without secondary packaging, and the process is simple; in addition, the liquid column type pressure sensor is attached to the outer surface of the capsule shell and does not occupy the space inside the capsule shell, so that the capsule shell can be made smaller, and the liquid column type pressure sensor occupies little space outside the capsule shell because the liquid column type pressure sensor is thinner, so that the whole volume of the capsule type pressure measuring device can be made smaller.
Drawings
Fig. 1 is an exploded perspective view of a capsule type pressure measuring apparatus according to an embodiment of the present application.
Fig. 2 is a perspective view of a capsule type pressure measuring apparatus according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of the liquid column pressure sensor in fig. 1.
3 fig. 3 4 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 in 3 fig. 33 3. 3
FIG. 5 is a sectional view taken along line B-B in FIG. 3
Fig. 6 is a schematic structural diagram of a liquid column pressure sensor according to another embodiment of the present application.
Fig. 7 is a partial cross-sectional view of fig. 2.
Fig. 8 is a top view of a capsule type pressure measuring device according to an embodiment of the present application.
Fig. 9 is a top view of a capsule type pressure measuring device according to an embodiment of the present application.
FIG. 10 is a rear end cap configuration view of an embodiment of the present application;
FIG. 11 is a schematic view of a capsule-type pressure measuring device, a rear end cap and a syringe connected to each other according to an embodiment of the present invention;
FIGS. 12 to 15 are views showing the state of the pressure measuring device according to the embodiment of the present invention at various positions in the specimen;
the attached drawings are as follows:
1. a capsule housing; 10. a cylindrical surface; 11. a rear housing; 12. a front housing; 2. a data transmission component; 21. an antenna; 22. a data acquisition processing module; 23. a battery; 3. an image acquisition component; 31. a camera; 32. an image sensor; 33. an illuminating lamp; 4. a liquid column pressure sensor; 41. a liquid sac; 411. an accommodating chamber; 412. a gas chamber; 413. a liquid chamber; 42. a liquid column with scales; 421. a liquid column cavity; 43. a drive plate; 44. a pressure-sensitive film; 45. a binder; 5. a rear end cap; 51. a suction cup; 52. a breather pipe; 6. a needle tube; 100. a capsule type pressure measuring device; 200. the wall of the tube to be inspected; d1-effective imaging angle boundary; d2-effective viewing angle boundary.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
As shown in fig. 1 and 2, an embodiment of the present application discloses a capsule pressure measurement device 100, where the capsule pressure measurement device 100 includes a capsule housing 1, a data transmission assembly 2, an image acquisition assembly 3, and a liquid column pressure sensor 4. Wherein, data transmission subassembly 2 and image acquisition subassembly 3 set up respectively in this capsule casing 1 to image acquisition subassembly 3 links to each other with data transmission subassembly 2, and liquid column formula pressure sensor 4 pastes and establishes at the surface of capsule casing 1, and image acquisition subassembly 3 is used for obtaining the scale value image of liquid column formula pressure sensor 4. The liquid column type pressure sensor 4 is attached to the outer surface of the capsule shell 1 through a transparent adhesive material, the transparent back adhesive has biocompatibility, and the transparent back adhesive can be, but is not limited to, medical-grade UV adhesive, medical instant adhesive or medical back adhesive.
In the embodiment of the present application, the liquid column pressure sensor 4 is attached to the outer surface of the capsule shell 1 (for example, by gluing), and specifically, when the liquid in the liquid column pressure sensor 4 is packaged, the liquid column pressure sensor 4 is packaged on a curved surface, so that the liquid column pressure sensor 4 is a curved surface when the manufacturing is completed. Meanwhile, compared with the traditional MEMS sensor, the liquid column type pressure sensor is characterized in that the plastic film used for packaging the liquid indicating the scales is made of materials which accord with biocompatibility, such as transparent silica gel, TPU (thermoplastic polyurethanes, Chinese), PET (polyethylene terephthalate, Chinese) and the like, so that the biocompatibility requirement can be met without secondary packaging, and the process is simple. Further, the liquid column type pressure sensor 4 is attached to the outer surface of the capsule shell 1, and does not occupy the space inside the capsule shell 1, so that the capsule shell 1 can be made smaller, the liquid column type pressure sensor 4 is thinner, the thickness of the liquid column type pressure sensor is only 0.1 mm-0.5 mm, the width of the liquid column type pressure sensor is only 0.2mm-1mm, and the length of the liquid column type pressure sensor is smaller than the perimeter of the capsule shell 1, therefore, the liquid column type pressure sensor 4 occupies very little space outside the capsule shell 1, and the overall volume of the capsule type pressure measuring device can be made smaller.
Further, the capsule housing 1 comprises a cylindrical surface 10. In the present embodiment, the liquid column pressure sensor 4 is attached to the cylindrical surface 10 of the capsule housing 1 through a colloid made of a biocompatible material. It is understood that in other embodiments, the liquid column pressure sensor 4 may be attached to the cylindrical surface 10 of the capsule housing 1 by other means, such as heat pressing, transparent adhesive, etc.
When treating the physical pressure measurement, put into the capsule type pressure measurement device of this application and wait to examine internally, make the direct muscle pressure of waiting to examine the body pipe wall at the different positions, examine the internal gas pressure of body cavity and liquid pressure and act on liquid column type pressure sensor 4, it is different to lead to liquid column type pressure sensor 4's liquid level scale, rethread image acquisition component 3 acquires the liquid level scale image on liquid column type pressure sensor 4 and transmits to external equipment through data transmission component 2, examine internal pressure value by the external equipment analysis and obtain. Specifically, in one embodiment of the present application, the sample is a digestive tract. It is to be understood that the sample may be uterus, vagina, rectum, or female urethra.
As shown in fig. 12 to 15, the direct muscle pressure of the tube wall 200 of the subject acts on the liquid column pressure sensor 4 of the capsule type pressure measuring apparatus 100; in fig. 14, the gas pressure in the digestive tract of the subject to be examined acts on the liquid column type pressure sensor 4 of the capsule type pressure measuring apparatus 100; and in fig. 15, the liquid pressure in the digestive tract of the subject to be measured acts on the liquid column type pressure sensor 4 of the capsule type pressure measuring apparatus 100.
The existing capsule type pressure measuring device for measuring the pressure to be detected puts an MEMS sensor at the head end or the tail end of a capsule. The tubular parts of the esophagus, the intestinal tract and the like are generally coaxial with the capsule, so that the acting force can act on the cylindrical surface of the capsule when the body muscle to be detected contracts, and the body muscle to be detected is distorted when the cylindrical surface of the capsule is coated but the two ends of the capsule are not completely coated. This application pastes the face of cylinder of locating capsule casing 1 with liquid column pressure sensor 4, at esophagus, intestinal etc. and the coaxial tubular part of capsule casing, the effort that makes when examining the contraction of body muscle is used in the face of cylinder of capsule casing, examines the body muscle cladding in liquid column pressure sensor 4 promptly to make the measuring internal pressure value of examining that obtains more accurate.
The capsule shell 1 comprises a rear shell 11 and a front shell 12, the data transmission assembly 2 comprises an antenna 21, a data acquisition processing module 22 and a battery 23, the image acquisition assembly 3 comprises an image sensor 32, a camera 31 and a lighting lamp 33, and the lighting lamp 33 adopts an LED lamp. The rear shell 11 and the front shell 12 are connected in a matching manner to form a cavity together, the front shell 12 is transparent, and the antenna 21, the data acquisition and processing module 22, the battery 23, the image sensor 32, the illuminating lamp 33 and the camera 31 are sequentially arranged in the cavity formed by the rear shell 11 and the front shell 12 from the rear shell 11 to the front shell 12. The battery 23 is used for respectively providing electric energy for the data acquisition processing module 22, the image sensor 32, the camera 31 and the illuminating lamp 33, and the image sensor 32 is respectively connected with the camera 31 and the data acquisition processing module 22.
As shown in fig. 3, 4, and 5, in the present embodiment, the liquid column pressure sensor 4 includes a liquid bladder 41, a graduated liquid column 42, and an imageable liquid. Wherein, the liquid column 42 with scale is provided with a liquid column cavity 421, each grid in the liquid column 42 with scale represents 1mmhg (millimeter mercury column), 2mmhg or 5mmhg, etc.; the imageable liquid can be imaged through the image capturing assembly 3, and specifically, the imageable liquid is a liquid having a distinct color characteristic, so that the color of the imageable liquid can be distinguished from the color of the human body cavity tissue, for example, the imageable liquid may be a colored liquid such as a fluorescent liquid, a green liquid, a blue liquid, or a black liquid. Specifically, when the connection is made, the end of the liquid bag 41 is communicated with the graduated liquid column 42, and the imageable liquid is disposed in the liquid bag 41. The sac 41 and the graduated liquid column 42 are made of biocompatible material. It will be appreciated that in other embodiments, the fluid column 42 may be connected to the middle or other portion of the fluid bladder 41.
In the application, the measurement range of the liquid column type pressure sensor 4 is 0-300 mmhg, 10mmhg per lattice, and 30 lattices in total. And the adoption of the colored liquid is because the camera is sensitive to the colored liquid, and the imaging effect is better.
Further, the sac 41 has a receiving chamber 411, the receiving chamber 411 communicates with the liquid column chamber 421, and the imageable liquid can flow in the liquid column chamber 421. Different scales can be mapped when imageable liquid flows within the liquid column chamber 421. Meanwhile, when the liquid column type pressure sensor 4 is subjected to the pressure of the external environment (for example, the pressure of the digestive tract of a human body), the liquid sac 41 can drive the imageable liquid to flow in the liquid column cavity 421, and the scale corresponding to the imageable liquid in the flowing process can represent the pressure applied to the liquid column type pressure sensor 4.
The scale of the graduated liquid column 42 has a reference point, i.e., zero point, when the imageable liquid points to the zero point scale, it indicates that the pressure applied to the liquid column pressure sensor 4 is approximately zero, when the imageable liquid points to a scale greater than zero, it indicates that the liquid column pressure sensor 4 is applied with external pressure (e.g., applied with pressure of the digestive tract of a human body), and the larger the scale value pointed by the imageable liquid, the larger the external pressure applied to the liquid column pressure sensor 4.
More specifically, when the pressure applied to the liquid column pressure sensor 4 is close to zero, the imageable liquid is entirely located in the containing cavity 411, and the imageable liquid fills the containing cavity 411, and at this time, the imageable liquid points to the zero point in the scale. When the liquid column type pressure sensor 4 is subjected to pressure larger than zero, the pressure can act on the liquid bag 41, the accommodating cavity 411 can deform towards the inside of the accommodating cavity under the action of the pressure, the imageable liquid in the accommodating cavity 411 can be extruded into the liquid column cavity 421 in the deformation process, and therefore the imageable liquid can be directed to the scales larger than zero, and the larger the pressure is, the more imageable liquid enters the liquid column cavity 421, and the larger the scales are.
Of course, the position of the scale in the liquid column cavity 421 can also be adjusted according to the flow rate of the imageable liquid inside the liquid column pressure sensor 4, and in order to ensure that the liquid column pressure sensor 4 has high measurement accuracy, the imageable liquid in the inner cavity of the liquid column pressure sensor can at least fill the accommodating cavity 411.
On the other hand, the measurement sensitivity of the liquid column pressure sensor 4 can be adjusted by changing the sectional area of the liquid column chamber 421, and the sensitivity is higher and the accuracy is higher as the sectional area of the liquid column chamber 421 is smaller. Meanwhile, the range of the liquid column pressure sensor 4 can be adjusted by changing the length of the liquid column chamber 421 (the length of the graduated liquid column 42) in the direction of the flow of the imageable liquid, and the longer the length of the graduated liquid column 42, the larger the range.
In one embodiment, as shown in fig. 4 and 5, the sac 41 includes a pressure-sensitive membrane 44, and the pressure-sensitive membrane 44 encloses a containing cavity 411. And the pressure-sensitive film 44 may be one or more of a polyester film and a polyamide film, and the pressure-sensitive film 44 is capable of deforming toward the inside of the accommodating chamber 411 when being subjected to external pressure; when the pressure disappears, the pressure-sensitive membrane 44 can recover the original state, therefore, the containing cavity 411 made by the pressure-sensitive membrane 44 enables the liquid column type pressure sensor 4 to have higher sensitivity and to measure for many times.
Specifically, the accommodating cavity 411 may be completely surrounded by the pressure-sensitive films 44, as shown in fig. 4 and 5, the accommodating cavity 411 may also include a plurality of pressure-sensitive films 44, and the pressure-sensitive films 44 are connected by an adhesive 45, wherein the adhesive 45 may be one or more of acrylates and epoxies.
In one embodiment, the sac 41 and the graduated liquid column 42 each comprise a pressure sensitive membrane 44, and the pressure sensitive membrane 44 encloses a containing cavity 411 and a liquid column cavity 421; the sectional area of the accommodating cavity 411 is larger than that of the liquid column cavity 421, and the sectional area of the accommodating cavity 411 is more than 2-10 times of that of the liquid column cavity 421, wherein the pressure-sensitive film 44 can be one or more of a polyester film and a polyamide film. When the liquid sac 41 and the liquid column 42 with the scales are stressed, the accommodating cavity 411 can deform, and the deformation of the liquid column cavity 421 is small, so that the liquid column type pressure sensor 4 can be ensured to have higher sensitivity and measurement accuracy.
Of course, in order to prevent the liquid column chamber 421 from deforming when being stressed and affecting the measurement accuracy, the graduated liquid column 42 may be configured to have a structure with high strength and rigidity, which is not easy to deform when being stressed. However, in the present embodiment, the liquid bag 41 and the liquid column 42 with scales, which are integrally formed, have the advantages of simple structure and convenient processing, and meanwhile, when the liquid column type pressure sensor 4 is used in the capsule type pressure measuring apparatus 100, the pressure sensitive membrane 44 with low rigidity has little damage to the human body and has high biocompatibility with the human body, thereby improving the safety of the liquid column type pressure sensor 4.
In one embodiment, as shown in fig. 6, the liquid bladder 41 includes a gas chamber 412 and a liquid chamber 413, the gas chamber 412 and the liquid chamber 413 being separated by a driving plate 43, and the volumes of the gas chamber 412 and the liquid chamber 413 being adjusted by movement of the driving plate 43. The liquid chamber 413 is filled with an imageable liquid, the imageable liquid in the liquid chamber 413 can enter the liquid column chamber 421, and the imageable liquid in the liquid column chamber 421 can also enter the liquid chamber 413. Wherein the imageable liquid is one or more of methylene blue, beet red, and vitamin B. The methylene blue is dissolved in water to form a blue solution, the beet red is dissolved in water to form a red solution, and the vitamin B is dissolved in water to form a yellow solution, so that the identifiability of the imageable liquid in the liquid column cavity 421 can be improved by the three substances, and the methylene blue solution is preferably selected to avoid the color of the imageable liquid being close to that of the inside of a human body. Also, the scale of the graduated liquid column 42 may be white to facilitate differentiation from imageable liquids.
Further, the capsule type pressure measuring device 100 may include a plurality of liquid column type pressure sensors 4, and the ranges of the liquid column type pressure sensors 4 are not completely the same, at this time, the liquid column type pressure sensors 4 with different ranges can satisfy the measurement in different pressure ranges, and the accuracy of the detection result is improved. Meanwhile, when the capsule type pressure measuring device 100 includes a plurality of liquid column type pressure sensors 4, it is possible to avoid that pressure measurement cannot be performed or measurement results are inaccurate when the liquid column type pressure sensors 4 fail. The types of the plurality of liquid column pressure sensors 4 may also be different.
Further, the rear shell 11 and the front shell 12 are both provided with a cylindrical surface 10, and in the present embodiment, the liquid column type pressure sensor 4 is attached to the cylindrical surface 10 of the front shell 12. In other embodiments, the liquid column pressure sensor 4 may also be attached to the cylindrical surface 10 of the rear shell, or the liquid column pressure sensor 4 may also be attached to the end of the rear shell 11 or the front shell 12, or both the rear shell 11 and the front shell 12. For example, two liquid column type pressure sensors 4 are attached to the cylindrical surfaces 10 of the rear case 11 and the front case 12, respectively, and the types and ranges of the two liquid column type pressure sensors 4 may be the same or different. No matter where the liquid column pressure sensor 4 is attached, it is necessary to make the camera able to capture the image of the liquid column 42 with the scale and to reduce the influence on the main body image as much as possible. For example, the liquid column type pressure sensor 4 is attached to the edge of the visual angle of the image acquisition assembly 3, similar observation is carried out by using the residual light of eyes, the main visual angle is mainly used for observing an image of a body to be detected, the reading of the pressure sensor can be observed when a certain characteristic position of the body to be detected is observed, pressure data can be recorded all the time through the image, and the later stage is compared with the image of the body to be detected, namely, the position and the pressure relation of the body to be detected is.
in one embodiment, as shown in FIG. 7, the camera 31 has an effective imaging angle α 1, and the capsule housing 1 comprises a transparent portion capable of covering the space where the effective imaging angle α 1 is located, so that the view of the camera 31 is not blocked, meanwhile, as shown in FIG. 7, the image sensor 32 has a display image angle α 2, and the transparent portion of the capsule housing 1 is also capable of covering the space where the display image angle α 2 is located, so that the imaging area of the image sensor 32 is not blocked.
meanwhile, when the camera 31 and the image sensor 32 are installed, α 1> α 2 is satisfied, that is, although the camera 31 can capture a picture in the α 1 corresponding range, and the α 1 corresponding range has the effective imaging angle boundary D1, the image sensor 32 can display the picture in the α 2 corresponding range, and the α 2 corresponding range has the display image angle boundary D2., for example, the effective imaging angle α 1 may be 140 °, and the display image angle α 2 may be 135 °.
based on this, in one embodiment, as shown in fig. 8, the liquid column type pressure sensor 4 is mounted on the transparent part of the capsule housing 1 and is located in the space between the effective imaging angle α 1 and the display image angle α 2, that is, the liquid column type pressure sensor 4 is located between the effective imaging angle boundary D1 and the display image angle boundary D2, and a plurality of liquid column type pressure sensors 4 may be included between the effective imaging angle boundary D1 and the display image angle boundary D2, and the liquid column type pressure sensors 4 may be of the same type or different types.
in another embodiment, as shown in fig. 9, the liquid column pressure sensor 4 is mounted on the transparent portion of the capsule shell 1 and located in the space occupied by the display image angle α 2, that is, the liquid column pressure sensor 4 is located inside the display image angle boundary D2 and close to the display image angle boundary D2, so that the liquid column pressure sensor 4 can be prevented from occupying the middle position of the display image range, and the image can be shielded by the liquid column pressure sensor 4, at this time, the pressure liquid column pressure sensor 4 is located in the imaging area of the image sensor 32, and the image sensor 32 transmits the scale information of the liquid column pressure sensor 4 to an external receiving device, so that the user can observe the scale of the liquid column pressure sensor 4, and the scale information can be transmitted to the external receiving device through the antenna 52.
When the pressure of a human body to be detected is measured, direct muscle pressure of the pipe wall of the human body to be detected at different positions, gas pressure and liquid pressure in a body cavity to be detected act on the liquid sac 41, so that the liquid sac 41 compresses imageable liquid to overflow into the liquid column 42 with the scales, and the liquid level stays at different scale positions of the liquid column 42 with the scales according to different overflow amounts of pressure. Then the camera 31 shoots the current liquid level information of the lower liquid column 42 with the scale, then the image sensor 32 converts the image optical signal into an electric signal and transmits the electric signal to the data acquisition and processing module 22 for processing, and finally the electric signal is wirelessly transmitted to external equipment through the antenna 21 for analysis to obtain the pressure of the human body to-be-detected body.
As shown in fig. 10 and 11, the device further comprises a rear end cap 5 and a release gas source, wherein the release gas source can output gas so as to generate corresponding acting force. In this embodiment, the releasing air source is a needle tube 6, but in other embodiments, the releasing air source may be an air injection pump or the like, which has an air outlet. The two ends of the rear end cap 5 are respectively connected with the needle tube 6 and the capsule shell 1. Specifically, the rear end cap 5 comprises a suction cup 51 and a vent pipe 52, wherein one end of the vent pipe 52 is communicated with an air outlet of the needle tube 6, so that the air output by the needle tube 6 can enter the vent pipe 52; the other end of the vent tube 52 is connected to a suction cup 51, and the suction cup 51 is used for suction connection to the capsule housing 1. The ventilation tube 52 may be a flexible tube, which may be made of a non-toxic and stable material, such as silicone rubber, to ensure its safety, and the outer diameter of the ventilation tube 52 may be set to 0.5mm to 1.5mm to ensure that the ventilation tube 52 does not generate too strong foreign body sensation and does not cut the esophagus.
During specific operation, the sucking disc 51 is connected with the back shell 11 of the capsule shell 1 in an adsorption manner, after a human body swallows the capsule type pressure measuring device connected with the back end cap 5, the pulling force of the capsule shell 1 is adjusted through the vent pipe 51 according to the descending speed of the capsule shell 1 in the esophagus, and repeated measurement and fixed-point measurement of the descending position of the esophagus are achieved. After the examination, the piston rod of the needle tube 6 is pushed forward, and the sucking disc 51 is filled with air to automatically separate from the capsule shell 1.
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (15)
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| CN202010160373.0A CN111166318B (en) | 2020-03-10 | 2020-03-10 | Capsule pressure measuring device |
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| CN111166318B CN111166318B (en) | 2025-08-29 |
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| CN111166318B (en) | 2025-08-29 |
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