Cavity detection system, medical device for use in a cavity

Abstract

The utility model discloses a cavity detection system, cavity detection system includes probe and host computer, and the probe includes ultrasonic transducer and first pressure sensor, and the ultrasonic transducer is used for emitting ultrasonic wave signal to the cavity wall direction and receiving corresponding ultrasonic echo signal when the probe enters the cavity, and the first pressure sensor is used for detecting the pressure in the cavity when the probe enters the cavity, and the relative position of first pressure sensor and ultrasonic transducer along the preset axial direction of probe remains unchanged, and the probe advances along the preset axial direction when entering the cavity, and the host computer is connected with the probe. This cavity detection system can obtain the pressure information and structure information of the cavity under single detection, can shorten the time of cavity detection, and is favorable to the somatic sensation of patient when the cavity is detected.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a cavity detection system and a medical device for use inside cavities. Background Technology

[0002] In modern medicine, it is often necessary to assess multiple indicators of cavities within the human body (such as the esophagus and intestines), including pressure and structural information (such as lumen area and anatomical size). However, existing cavity detection systems typically only detect one type of indicator. For example, taking the esophagus as an example, to assess esophageal pressure, an esophageal manometry tube can be used to obtain pressure data, and esophageal pressure information can be obtained based on this data; to assess esophageal structure, an ultrasound detection system can be used to acquire ultrasound images of the esophagus, and esophageal structural information can be obtained based on these images. This approach requires multiple tests of different methods, making the process cumbersome, time-consuming, and inconvenient for the patient. Utility Model Content

[0003] The present invention addresses the aforementioned problems. An embodiment of the present invention provides a cavity detection system. This cavity detection system can obtain pressure and structural information of a cavity in a single detection, shortening the cavity detection time and improving the patient's comfort during cavity detection.

[0004] According to an embodiment of the present invention, the cavity detection system includes a probe and a main unit. The probe includes an ultrasonic transducer and a first pressure sensor. The ultrasonic transducer is used to emit ultrasonic signals toward the cavity wall and receive corresponding ultrasonic echo signals when the probe enters the cavity. The first pressure sensor is used to detect the pressure inside the cavity when the probe enters the cavity, and the relative position of the first pressure sensor and the ultrasonic transducer remains unchanged along the preset axial direction of the probe. The probe advances along the preset axial direction when entering the cavity. The main unit is connected to the probe.

[0005] Optionally, the probe also includes a second pressure sensor for detecting pressure within the cavity.

[0006] Optionally, the probe includes a probe connector, a probe body, and a water bladder; the water bladder is fitted onto the distal end of the probe body, the probe body includes an ultrasonic transducer and a first pressure sensor, and the ultrasonic transducer and the first pressure sensor are located at the distal end of the probe body, and the ultrasonic transducer and the first pressure sensor are inside the water bladder cavity; the probe body also includes a first transmission mechanism, the first transmission mechanism is mechanically connected to the ultrasonic transducer, the first transmission mechanism is used to drive the ultrasonic transducer to rotate, and the first transmission mechanism is electrically connected to the probe connector.

[0007] Optionally, the first transmission mechanism is also used to drive the ultrasonic transducer to move along the axial direction of the probe body, the preset axial direction being the axial direction of the probe body; the probe body also includes a second transmission mechanism, the second transmission mechanism being mechanically connected to the first pressure sensor, the second transmission mechanism being used to drive the first pressure sensor to move synchronously with the ultrasonic transducer along the preset axial direction, and the second transmission mechanism being electrically connected to the probe connector.

[0008] Optionally, the probe body further includes a first sheath and a second sheath. One end of the first sheath is connected to the probe connector, and the other end is closed. The ultrasonic transducer and the first transmission mechanism are disposed in the inner cavity of the first sheath, and the inner cavity of the first sheath is filled with coupling fluid. The second sheath is sleeved on the outside of the first sheath. One end of the second sheath is connected to the probe connector, and the other end is provided with a first opening. The second transmission mechanism is disposed between the inner wall of the second sheath and the outer wall of the first sheath. The second transmission mechanism extends from the first opening to the outside of the second sheath along a preset axial direction, and the distal end of the second transmission mechanism does not exceed the proximal end of the ultrasonic transducer in the extension direction. The first pressure sensor is disposed at the distal end of the second transmission mechanism, and the maximum transmission stroke of the first pressure sensor is less than or equal to the distance between the proximal end of the first pressure sensor and the first opening along the preset axial direction.

[0009] Optionally, a filling material is provided in the first space between the inner wall of the second sheath and the outer wall of the first sheath, and the second transmission mechanism is located in a second space, different from the first space, between the inner wall of the second sheath and the outer wall of the first sheath.

[0010] Optionally, the probe also includes a water injection tube and a water injection connector, which are used to inject water into the water bladder; the second sheath has a second opening at one end near the probe connector, one end of the water injection tube is connected to the second sheath through the second opening, and the other end of the water injection tube is connected to the water injection connector; after water is injected into the water injection connector, the injected water flows through the water injection tube and the second opening through the second sheath, and flows into the water bladder through the first opening.

[0011] Optionally, the second pressure sensor is disposed on the outer wall of the second sheath and is located inside the water bladder cavity of the water bladder; a cable is also disposed between the inner wall of the second sheath and the outer wall of the first sheath, and the second sheath has a third opening on its wall, one end of the cable extends through the third opening to the outside of the second sheath wall to be electrically connected to the second pressure sensor, and the other end is electrically connected to the probe connector.

[0012] Optionally, the cavity detection system also includes a display, and the host is connected to the display.

[0013] According to another aspect of the present invention, a medical device for use in cavities is also provided. The medical device for use in cavities includes an endoscope system and a cavity detection system as described above. The endoscope system includes an endoscope channel and an image acquisition device. The image acquisition device and the probe in the cavity detection system enter the cavity through the endoscope channel. The image acquisition device is used to acquire endoscopic images of the cavity.

[0014] According to the cavity detection system of this utility model embodiment, an ultrasonic transducer and a first pressure sensor can be integrated into the same probe. When using this cavity detection system to detect the target cavity of a patient, the pressure information determined by the first pressure sensor and the structural information based on the ultrasonic transducer in the target cavity can be obtained in a single detection, without having to place the ultrasonic transducer and the first pressure sensor in the patient's body in multiple times. This can shorten the cavity detection time and improve the patient's physical experience during the examination.

[0015] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0016] The above and other objects, features, and advantages of this utility model will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this utility model and form part of the specification. They are used together with the embodiments of this utility model to explain the utility model and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0017] Figure 1 A schematic diagram of the overall structure of a probe according to an embodiment of the present invention is shown;

[0018] Figure 2 A longitudinal section schematic diagram of the proximal end of the probe body according to an embodiment of the present invention is shown;

[0019] Figure 3 A cross-sectional schematic diagram of the distal end of the probe body according to an embodiment of the present invention is shown;

[0020] The numbers in the diagram are as follows: 1-Probe connector, 2-Water injection connector, 3-Water injection pipe, 4-Probe body, 5-First cavity, 6-Second cavity, 7-Water bladder cavity, 8-Water bladder, 9-Third cavity, 10-Second sheath, 11-Second drive shaft, 12-Filling material, 13-First sheath, 14-Cable, 15-First drive shaft, 16-Second pressure sensor, 17-First pressure sensor, 18-Ultrasonic transducer. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model more apparent, exemplary embodiments according to this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this utility model, and not all embodiments of this utility model. It should be understood that this utility model is not limited to the exemplary embodiments described herein. Based on the embodiments of this utility model described herein, all other embodiments obtained by those skilled in the art without inventive effort should fall within the protection scope of this utility model.

[0022] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0023] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] To at least partially solve the above-mentioned technical problems, embodiments of this utility model provide a cavity detection system. This cavity detection system can obtain pressure and structural information of the cavity in a single detection, which can shorten the cavity detection time and improve the patient's sensation during cavity detection.

[0025] The cavity detection system according to an embodiment of the present invention includes a probe and a main unit. The probe includes an ultrasonic transducer and a first pressure sensor. The ultrasonic transducer is used to emit ultrasonic signals toward the cavity wall and receive corresponding ultrasonic echo signals when the probe enters the cavity. The first pressure sensor is used to detect the pressure inside the cavity when the probe enters the cavity, and the relative position of the first pressure sensor and the ultrasonic transducer remains unchanged along the preset axial direction of the probe. The probe advances along the preset axial direction when entering the cavity. The main unit is connected to the probe.

[0026] For example, in a cavity detection system, the probe and the main unit are connected. The probe may include a probe body with a distal end and a proximal end. The distal end of the probe body can be placed inside the target cavity. An ultrasonic transducer and a first pressure sensor can be disposed at the distal end of the probe body. The ultrasonic transducer can emit ultrasonic signals toward the cavity wall and receive corresponding ultrasonic echo signals. The first pressure sensor can detect the pressure inside the cavity. The relative positions of the ultrasonic transducer and the first pressure sensor satisfy the following requirement: the relative positions of the first pressure sensor and the ultrasonic transducer remain unchanged along a preset axial direction of the probe. Specifically, maintaining the relative positions in the preset direction can include keeping the distance and orientation of the two in the preset direction unchanged. Specifically, the ultrasonic transducer and the first pressure sensor can be disposed at different positions at the distal end of the probe body to ensure that the first pressure sensor does not interfere with the ultrasonic transducer's emission of ultrasonic signals and reception of corresponding ultrasonic echo signals. It is understood that the closer the distance between the ultrasonic transducer and the first pressure sensor, the closer the cavity location scanned by the ultrasonic transducer and the cavity location measured by the first pressure sensor will be. When the distance between the ultrasonic transducer and the first pressure sensor is within a preset distance range, it can be considered that the cavity location scanned by the ultrasonic transducer and the cavity location measured by the first pressure sensor are consistent. In this embodiment of the invention, the distance between the ultrasonic transducer and the first pressure sensor can be within a preset distance range. Please refer to... Figure 1 The diagram shown is a schematic representation of the overall structure of a probe according to an embodiment of the present invention. Figure 1In the illustrated embodiment, the probe may include a probe connector 1 and a probe body 4 connected to the probe connector 1. The probe body may include a first cavity 5 and a second cavity 6. An ultrasonic transducer may be disposed at the distal end of the first cavity 5. A transmission mechanism (denoted as the second transmission mechanism) may be disposed within the second cavity 6, and the distal end of the second transmission mechanism may extend outside the second cavity 6. A first pressure sensor may be disposed at the distal end of the second transmission mechanism. In the cavity detection system of this embodiment, "proximal end" refers to the end close to the probe connector along the axial direction of the probe body, and correspondingly, "distal end" refers to the end away from the probe connector along the axial direction of the probe body. The host is connected to the probe and can generate an ultrasonic image based on the ultrasonic echo signal sent by the ultrasonic transducer. It can also perform data processing on the first pressure data sent by the first pressure sensor, such as data enhancement and data denoising.

[0027] According to the cavity detection system of this utility model embodiment, an ultrasonic transducer and a first pressure sensor can be integrated into the same probe. When using this cavity detection system to detect the target cavity of a patient, the pressure information determined by the first pressure sensor and the structural information based on the ultrasonic transducer in the target cavity can be obtained in a single detection, without having to place the ultrasonic transducer and the first pressure sensor in the patient's body in multiple times. This can shorten the cavity detection time and improve the patient's physical experience during the examination.

[0028] Optionally, the probe also includes a second pressure sensor for detecting pressure within the cavity.

[0029] For example, a second pressure sensor can be set at the far end of the probe body. The position of the second pressure data can remain unchanged when the target cavity is probed. The host can acquire the second pressure data detected by the second pressure sensor and can also perform signal processing on the second pressure data.

[0030] According to the cavity detection system of this utility model embodiment, a second pressure sensor can also be provided on the probe, which can make the reliability of the measured pressure data higher, and the first pressure data measured by the first pressure sensor can be used as a reference with the second pressure data measured by the second pressure sensor.

[0031] Optionally, the probe includes a probe connector, a probe body, and a water bladder; the water bladder is fitted onto the distal end of the probe body, the probe body includes an ultrasonic transducer and a first pressure sensor, and the ultrasonic transducer and the first pressure sensor are located at the distal end of the probe body, and the ultrasonic transducer and the first pressure sensor are inside the water bladder cavity; the probe body also includes a first transmission mechanism, the first transmission mechanism is mechanically connected to the ultrasonic transducer, the first transmission mechanism is used to drive the ultrasonic transducer to rotate, and the first transmission mechanism is electrically connected to the probe connector.

[0032] For example, the cavity detection system may include a probe connector, a probe body, and a water bladder, wherein the probe body is connected to both the probe connector and the water bladder. The probe body may include an ultrasonic transducer and a first pressure sensor, both of which may be located within the water bladder cavity. The ultrasonic signal emitted by the ultrasonic transducer can penetrate the water in the water bladder cavity to reach the cavity wall. The first pressure sensor detects the pressure of the water within the water bladder cavity to obtain the pressure within the cavity. Please continue reading. Figure 1As shown, the probe also includes a water bladder 8, which is fitted onto the distal end of the probe body 4, and the water bladder 8 may have a water bladder cavity 7 for containing water. The probe body 4 may have a proximal end and a distal end, the proximal end being the end closer to the probe connector 1, and correspondingly, the distal end being the end farther from the probe connector 1. Exemplarily, the probe body may also include a first transmission mechanism. The first transmission mechanism may be mechanically connected to the ultrasonic transducer, and may be mechanically and electrically connected to the probe connector. The ultrasonic transducer and the first pressure sensor may be located within the water bladder cavity 7. In some embodiments, the ultrasonic transducer may be arranged circumferentially around the axis of the first transmission mechanism at the distal end of the first transmission mechanism. In this case, the first transmission mechanism may be considered as a fixed connector, which may only be used for mechanical connection with the ultrasonic transducer; or, the first transmission mechanism may have the function of moving along a preset axis. When the first transmission mechanism has the function of moving along a preset axis, the first transmission mechanism may be, for example, a flexible cylindrical shaft capable of moving along the preset axis. The host computer can control the first transmission mechanism to move a preset distance along its axial direction (i.e., along the axial direction of the probe body) to control the ultrasonic transducer to move to the next cavity to be scanned. In some embodiments, the ultrasonic transducer is not arranged in a ring around the axial direction of the first transmission mechanism at its distal end, meaning it cannot emit ultrasonic signals in a ring when at the same position. In this case, the first transmission mechanism can have a rotation function. Specifically, the host computer can control the first transmission mechanism to rotate. During the rotation of the first transmission mechanism, the host computer can control the ultrasonic transducer to emit ultrasonic signals towards the target cavity and receive ultrasonic echo signals to generate one or more cavity ultrasonic images. Each cavity ultrasonic image can include a cross-section of the corresponding cavity position within the target cavity. Alternatively, the first transmission mechanism can simultaneously have a rotation function and a movement function along a preset axial direction. When the first transmission mechanism only has a rotational function, it may be, for example, a drive shaft that can rotate under the drive of a motor. When the first transmission mechanism only has a function of moving along a preset axial direction, it may be, for example, a flexible cylindrical shaft capable of moving along a preset axial direction. When the first transmission mechanism has both rotational and axial-movement functions, it can be driven by a built-in motor or an external power source to rotate around its own axis, and can utilize helical transmission, rack and pinion, or other linear actuators to achieve the extension and retraction of the shaft along the preset axial direction. In some embodiments, while the first transmission mechanism moves axially, it can also rotate, allowing the ultrasonic transducer to perform a 360° circumferential or helical scan of the target cavity accordingly.

[0033] Please see Figure 2 The image shown is a schematic longitudinal section of the proximal end of a probe body according to an embodiment of the present invention. Figure 2In the illustrated embodiment, the probe body may include a first drive shaft 15 disposed in the first cavity 5, and the first drive shaft 15 may serve as a first transmission mechanism. See also... Figure 3 As shown, it is a cross-sectional schematic diagram of the distal end of the probe body according to an embodiment of the present invention. Figure 3 (a) in the diagram is a cross-sectional view of the distal end of the probe body. Figure 3 (b) is a schematic longitudinal section of the distal end of the probe body. Within a specific length range, the distal end of the probe body may include only the first cavity 5, excluding the second cavity 6 and the third cavity 9. This embodiment of the invention does not limit the specific numerical range of the specific length range. The material of the first sheath 13 within this specific length range can be a material with good ultrasonic signal penetration, such as polyurethane, polyetheretherketone, or polytetrafluoroethylene. The probe body may also include a second drive shaft 11 disposed within the second cavity 6. The ultrasonic transducer 18 and the first pressure sensor 17 can be disposed at the distal end of the probe body 4. The distal ends of both the first drive shaft 15 and the second drive shaft 11 belong to the distal end of the probe body. The ultrasonic transducer 18 can be disposed at the distal end of the first drive shaft 15, and the first pressure sensor 17 can be disposed at the distal end of the second drive shaft 11. The plane where the ultrasonic transducer 18 is located can be parallel to the axis of the probe body (i.e., the axis of the first drive shaft 15), or it can have a certain angle with the probe axis. A cable (e.g., enameled wire) can be installed inside the first drive shaft 15, and the ultrasonic transducer 18 can be electrically connected to the male connector assembly of the probe connector 1 via the cable. The ultrasonic transducer 18 can emit ultrasonic signals towards the cavity wall of the target cavity through the water in the water bladder 7 of the water bladder 8, and receive ultrasonic echo signals through the water in the water bladder 7. The first pressure sensor 17 can obtain the first pressure data of the target cavity by acquiring the pressure of the water in the water bladder 7 on the first pressure sensor 17. The proximal end of the first drive shaft 15 can be connected to the male connector assembly of the probe connector 1 ( Figure 3 (Not shown) is connected to achieve both mechanical and electrical connection with probe connector 1. The first drive shaft 15 may have a rotation function to drive the ultrasonic transducer 18 to rotate.

[0034] According to the cavity detection system of this utility model embodiment, the probe body may further include a water bladder. The ultrasonic transducer can emit ultrasonic signals towards the cavity wall of the target cavity through the water in the water bladder. The water can serve as a propagation medium for the ultrasonic signal, providing stable water coupling conditions for ultrasonic imaging. Furthermore, the water in the water bladder can serve as a buffer between the target cavity and the distal end of the probe body, which helps to reduce the abnormal sensation of direct contact between the patient and the distal end of the probe body. On the other hand, the water can fully contact the first pressure sensor, thereby ensuring that the first pressure sensor can always detect the pressure data of the target cavity through the water in the water bladder.

[0035] Optionally, the first transmission mechanism is also used to drive the ultrasonic transducer to move along the axial direction of the probe body, the preset axial direction being the axial direction of the probe body; the probe body also includes a second transmission mechanism, the second transmission mechanism being mechanically connected to the first pressure sensor, the second transmission mechanism being used to drive the first pressure sensor to move synchronously with the ultrasonic transducer along the preset axial direction, and the second transmission mechanism being electrically connected to the probe connector.

[0036] Exemplarily, the first transmission mechanism may have the function of moving along a preset axial direction, which can be used to drive the ultrasonic transducer to move along the axial direction of the probe body (equivalent to the axial direction of the first transmission mechanism). The axial movement of the first transmission mechanism can be step-by-step or continuous. The probe body may also include a second transmission mechanism mechanically connected to the first pressure sensor, which can move synchronously with the first transmission mechanism along the axial direction of the probe body (equivalent to the axial direction of the second transmission mechanism, and the axial direction of the first transmission mechanism and the axial direction of the second transmission mechanism are in the same direction). Similarly, the second transmission mechanism can be mechanically and electrically connected to the probe connector. In the embodiments of this utility model, the pressure sensor can be a micro-electro-mechanical system (MEMS) component, with its plane parallel to the axis of the probe body, and can be any sensor capable of directly or indirectly acquiring pressure data, such as resistive, capacitive, or fiber optic sensors. Please continue reading. Figure 2 and Figure 3 As shown, the probe body may further include a second cavity 6, within which a second drive shaft 11 may be disposed, serving as a second transmission mechanism. A first pressure sensor 17 may be disposed at the distal end of the second drive shaft 11, and its proximal end may be connected to the male connector assembly of the probe connector 1, with the first pressure sensor 17 mechanically connected to the second drive shaft 11. Similarly, a cable (e.g., enameled wire) may be disposed within the second drive shaft 11, allowing the first pressure sensor 17 to be electrically connected to the male connector assembly of the probe connector 1 via the cable. The second drive shaft 11 can drive the first pressure sensor 17 to move synchronously with the ultrasonic transducer 18 along a preset axial direction, ensuring that the relative positions of the first pressure sensor 17 and the ultrasonic transducer 18 remain unchanged along the preset axial direction of the probe. Specifically, when the first drive shaft 15 moves x along the preset axial direction, the second drive shaft 11 moves x synchronously with the first drive shaft 11 along the preset axial direction. Correspondingly, the ultrasonic transducer 18, which is mechanically connected to the first drive shaft 15, and the first pressure sensor 17, which is mechanically connected to the second drive shaft 11, both move along the preset axial direction x.

[0037] According to the cavity detection system of this utility model embodiment, since both the first pressure sensor and the ultrasonic transducer can move axially under the drive of the first transmission mechanism and the second transmission mechanism, it can automatically measure and scan multiple cavity positions in the target cavity, which has a high degree of automation and helps to reduce the workload of doctors.

[0038] Optionally, the probe body further includes a first sheath and a second sheath. One end of the first sheath is connected to the probe connector, and the other end is closed. The ultrasonic transducer and the first transmission mechanism are disposed in the inner cavity of the first sheath, and the inner cavity of the first sheath is filled with coupling fluid. The second sheath is sleeved on the outside of the first sheath. One end of the second sheath is connected to the probe connector, and the other end is provided with a first opening. The second transmission mechanism is disposed between the inner wall of the second sheath and the outer wall of the first sheath. The second transmission mechanism extends from the first opening to the outside of the second sheath along a preset axial direction, and the distal end of the second transmission mechanism does not exceed the proximal end of the ultrasonic transducer in the extension direction. The first pressure sensor is disposed at the distal end of the second transmission mechanism, and the maximum transmission stroke of the first pressure sensor is less than or equal to the distance between the proximal end of the first pressure sensor and the first opening along the preset axial direction.

[0039] Please continue reading. Figure 2 and Figure 3 As shown, the probe body may also include a first sheath 13 and a second sheath 10, with the proximal end of the first sheath 13 connected to the probe connector and the distal end closed, meaning the inner cavity of the first sheath 13 is a closed space. The inner cavity of the first sheath 13 is filled with coupling fluid, which ensures the transmission of ultrasonic signals and ultrasonic echo signals. The first sheath 13 is disposed in the first cavity 5, and the first drive shaft 15 and the ultrasonic transducer 18 are disposed within the inner cavity of the first sheath 13. The second sheath 10 is sleeved outside the first sheath 13. The second drive shaft 11 is disposed between the inner wall of the second sheath 10 and the outer wall of the first sheath 13. The proximal end of the second sheath 13 is connected to the probe connector, and the distal end has a first opening. The second drive shaft 11 can extend axially from the first opening to the outside of the second sheath 13, and the distal end of the second drive shaft 11 does not exceed the proximal end of the ultrasonic transducer 18 in the extending direction. Figure 3 (The direction of extension shown is to the left). The first pressure sensor 17 is located at the distal end of the second drive shaft 11, and the maximum transmission stroke of the first pressure sensor 17 is less than or equal to the axial distance between the proximal end of the first pressure sensor 17 and the first opening. Specifically, after the first pressure sensor 17 moves to the right according to the maximum transmission stroke, the proximal end of the first pressure sensor 17 can be located at the first opening, and the first pressure sensor 17 is always outside the second sheath 10.

[0040] According to the cavity detection system of this utility model embodiment, the ultrasonic transducer can be placed separately in the first sheath, and the coupling fluid in the first sheath can transmit ultrasonic signals and ultrasonic echo signals, ensuring that the ultrasonic transducer can send ultrasonic signals and receive ultrasonic echo signals relatively smoothly; on the other hand, by setting the maximum transmission stroke of the first pressure sensor to be less than or equal to the axial distance between the proximal end of the first pressure sensor and the first opening, it can be ensured that the first pressure sensor will not move into the cavity of the second sheath, thus avoiding the inability to measure the pressure in the target cavity.

[0041] Optionally, a filling material is provided in the first space between the inner wall of the second sheath and the outer wall of the first sheath, and the second transmission mechanism is located in a second space, different from the first space, between the inner wall of the second sheath and the outer wall of the first sheath.

[0042] Please continue reading. Figure 2 and Figure 3 As shown, a second cavity 6 exists between the inner wall and the outer wall of the second sheath 10, and the second drive shaft 11 is disposed in the second cavity 6. It can be understood that the second cavity 6 can serve as a second space between the inner wall of the second sheath 10 and the outer wall of the first sheath 13. The space outside the second cavity 6 (serving as a first space) can be filled with a filling material 12. The filling material 12 can be used to form a fixed cavity, such as the second cavity 6, between the inner wall of the second sheath 10 and the outer wall of the first sheath 13.

[0043] According to the cavity detection system of this utility model embodiment, by providing a filling material between the inner wall of the second sheath and the outer wall of the first sheath, a fixed second space can be formed to place the second transmission mechanism, which helps to separate the second transmission mechanism from the wall of the first sheath and helps to protect the wall of the first sheath.

[0044] Optionally, the probe also includes a water injection tube and a water injection connector, which are used to inject water into the water bladder; the second sheath has a second opening at one end near the probe connector, one end of the water injection tube is connected to the second sheath through the second opening, and the other end of the water injection tube is connected to the water injection connector; after water is injected into the water injection connector, the injected water flows through the water injection tube and the second opening through the second sheath, and flows into the water bladder through the first opening.

[0045] For example, the probe may further include a water injection tube and a water injection connector, which can be used to inject water into the water bladder. A second opening may be provided on the wall of the second sheath near the probe connector. One end of the water injection tube can be connected to the second sheath through the second opening, and the other end can be connected to the water injection connector. After water is injected into the water injection connector, water can flow into the second sheath through the water injection tube and the second opening, and then flow into the water bladder through the first opening of the second sheath. Please continue reading. Figure 1 and Figure 2 As shown, the probe also includes a water injection connector 2 and a water injection pipe 3, and a second opening can be provided at the end of the second sheath 10 near the probe connector. Figure 2 In the illustrated embodiment, the probe body may further include a third cavity 9. The second cavity 6 and the third cavity 9 can be obtained by separating the space between the inner wall of the first sheath 13 and the outer wall of the second sheath 10 by a filling material 12. The second opening can be located on the wall corresponding to the second cavity 6 in the second sheath 10, or it can be located on the wall corresponding to the third cavity 9 in the second sheath 10. One end of the water injection pipe 3 is connected to the second sheath 10 through the second opening, and the other end of the water injection pipe 3 is connected to the water injection connector 2. After water is injected into the water injection connector, the injected water flows through the water injection pipe 3 and the second opening through the second cavity 6 (or the third cavity 9) in the second sheath 10, and flows into the water bladder cavity 7 of the water bladder 8 through the first opening. It can be understood that when the detection of the target cavity is completed, the water in the water bladder 8 can be completely emptied along the second cavity 6 (or the third cavity 9), and the water bladder 8 can return to its shrunken state.

[0046] According to the cavity detection system of this utility model embodiment, the wall of the second sheath can also be provided with a second opening, which enables water to be injected into the water bladder through the second opening outside the target cavity and the water injection pipe and water injection connector connected to the second opening when the water bladder is inside the target cavity, making the water injection operation relatively simple.

[0047] Optionally, the second pressure sensor is disposed on the outer wall of the second sheath and is located inside the water bladder cavity of the water bladder; a cable is also disposed between the inner wall of the second sheath and the outer wall of the first sheath, and the second sheath has a third opening on its wall, one end of the cable extends through the third opening to the outside of the second sheath wall to be electrically connected to the second pressure sensor, and the other end is electrically connected to the probe connector.

[0048] For example, the probe body may further include a second pressure sensor, which may be disposed on the outer wall of the second sheath. Similar to the first pressure sensor, the second pressure sensor is disposed within the water bladder cavity of the water bladder. The probe body may also include a cable, such as enameled wire, with a third opening on the wall of the second sheath. The distal end of the cable may extend to the outside of the wall of the second sheath and be electrically connected to the second pressure sensor, while the proximal end may be electrically connected to the probe connector. Please continue reading. Figure 2 and Figure 3As shown, the probe body may further include a cable 14 and a second pressure sensor 16. The cable 14 is disposed within the third cavity 9, and its distal end is connected to the second pressure sensor 16 disposed on the outer wall of the second sheath 10, while its proximal end is connected to the probe connector 1. The second pressure sensor 16 is located within the water bladder cavity 7 of the water bladder 8. It can be understood that the probe body may also include a cable connected to a first pressure sensor 17. This cable may optionally be disposed within the second cavity 6 or within the second drive shaft 11, with its distal end connected to the first pressure sensor 17 and its proximal end connected to the probe connector 1.

[0049] According to the cavity detection system of this utility model embodiment, a second pressure sensor can also be set on the outer wall of the second sheath. This can ensure that the cavity position measured by the second pressure sensor is always consistent, thereby helping to achieve a high regularity and strong reference value of the second pressure data measured by the second pressure sensor.

[0050] Optionally, the cavity detection system also includes a display, and the host is connected to the display.

[0051] For example, the cavity detection system may also include a display connected to a host computer. The host computer can display an ultrasonic image of the cavity generated based on the ultrasonic echo signal transmitted by the ultrasonic transducer on the display, and can also display first pressure data measured by a first pressure sensor and second pressure data measured by a second pressure sensor on the display.

[0052] According to the cavity detection system of this utility model embodiment, the display can show cavity ultrasound images and pressure data, which is helpful for doctors to judge and analyze the target cavity.

[0053] According to another aspect of the present invention, a medical device for use in cavities is also provided. The medical device for use in cavities includes an endoscope system and a cavity detection system as described above. The endoscope system includes an endoscope channel and an image acquisition device. The image acquisition device and the probe in the cavity detection system enter the cavity through the endoscope channel. The image acquisition device is used to acquire endoscopic images of the cavity.

[0054] For example, the image acquisition device in the endoscopy system may be an endoscope body, which can acquire images of the cavity to obtain endoscopic images of the cavity. An optical camera may be installed in the endoscope body to acquire optical images within the cavity. During cavity probing, the endoscope channel can enter the cavity, and both the image acquisition device and the probe in the cavity probing system can enter the cavity through the endoscope channel.

[0055] The aforementioned intracavitary medical device integrates an endoscopy system and a cavity detection system. Using a single endoscopic channel, pressure information determined by a first pressure sensor, structural information based on an ultrasound transducer, and optical image information obtained from an endoscopic image acquisition device can be acquired in a single examination, eliminating the need to place the ultrasound transducer, first pressure sensor, and endoscopic image acquisition device separately inside the patient. This shortens cavity detection time and improves patient comfort during the examination.

[0056] The above are merely specific embodiments or descriptions of the present utility model. The protection scope of the present utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model. The protection scope of the present utility model shall be determined by the scope of the claims.

Claims

1. A cavity detection system, characterized in that, The cavity detection system includes a probe and a main unit. The probe includes an ultrasonic transducer and a first pressure sensor. The ultrasonic transducer is used to emit ultrasonic signals toward the cavity wall and receive corresponding ultrasonic echo signals when the probe enters the cavity. The first pressure sensor is used to detect the pressure inside the cavity when the probe enters the cavity, and the relative position of the first pressure sensor and the ultrasonic transducer remains unchanged along a preset axial direction of the probe. The probe advances along the preset axial direction when entering the cavity. The main unit is connected to the probe.

2. The cavity detection system according to claim 1, characterized in that, The probe also includes a second pressure sensor, which is used to detect the pressure inside the cavity.

3. The cavity detection system according to claim 1 or 2, characterized in that, The probe includes a probe connector, a probe body, and a water bladder; The water bladder is fitted over the distal end of the probe body. The probe body includes the ultrasonic transducer and the first pressure sensor. The ultrasonic transducer and the first pressure sensor are located at the distal end of the probe body and are located inside the water bladder cavity of the water bladder. The probe body also includes a first transmission mechanism, which is mechanically connected to the ultrasonic transducer. The first transmission mechanism is used to drive the ultrasonic transducer to rotate and is electrically connected to the probe connector.

4. The cavity detection system according to claim 3, characterized in that, The first transmission mechanism is also used to drive the ultrasonic transducer to move along the axial direction of the probe body, wherein the preset axial direction is the axial direction of the probe body; The probe body also includes a second transmission mechanism, which is mechanically connected to the first pressure sensor. The second transmission mechanism is used to drive the first pressure sensor to move synchronously with the ultrasonic transducer along the preset axial direction. The second transmission mechanism is electrically connected to the probe connector.

5. The cavity detection system according to claim 4, characterized in that, The probe body also includes a first sheath and a second sheath. One end of the first sheath is connected to the probe connector, and the other end is closed. The ultrasonic transducer and the first transmission mechanism are disposed in the inner cavity of the first sheath, and the inner cavity of the first sheath is filled with coupling fluid. The second sheath is sleeved outside the first sheath. One end of the second sheath is connected to the probe connector, and the other end has a first opening. The second transmission mechanism is disposed between the inner wall of the second sheath and the outer wall of the first sheath. The second transmission mechanism extends from the first opening to the outside of the second sheath along the preset axial direction, and the distal end of the second transmission mechanism does not exceed the proximal end of the ultrasonic transducer in the extension direction. The first pressure sensor is disposed at the distal end of the second transmission mechanism, and the maximum transmission stroke of the first pressure sensor is less than or equal to the distance between the proximal end of the first pressure sensor and the first opening along the preset axial direction.

6. The system according to claim 5, characterized in that, A filling material is provided in the first space between the inner wall of the second sheath and the outer wall of the first sheath, and the second transmission mechanism is located in a second space, different from the first space, between the inner wall of the second sheath and the outer wall of the first sheath.

7. The cavity detection system according to claim 6, characterized in that, The probe also includes a water injection pipe and a water injection connector, the water injection pipe and the water injection connector being used to inject water into the water bladder; The second sheath has a second opening at one end near the probe connector. One end of the water injection pipe is connected to the second sheath through the second opening, and the other end of the water injection pipe is connected to the water injection connector. After water is injected into the water inlet, the injected water flows through the water inlet pipe and the second opening, through the second sheath, and into the water bladder through the first opening.

8. The cavity detection system according to claim 7, characterized in that, When the probe further includes a second pressure sensor, the second pressure sensor is disposed on the outer wall of the second sheath and inside the water bladder cavity of the water bladder, and the second pressure sensor is used to detect the pressure inside the cavity; A cable is also provided between the inner wall of the second sheath and the outer wall of the first sheath. The second sheath has a third opening on its wall. One end of the cable extends through the third opening to the outside of the second sheath wall to be electrically connected to the second pressure sensor, and the other end is electrically connected to the probe connector.

9. The cavity detection system according to claim 1 or 2, characterized in that, The cavity detection system also includes a display, and the host is connected to the display.

10. A medical device for use inside a cavity, characterized in that, The medical device for use within cavities includes an endoscope system and a cavity detection system as described in any one of claims 1-9. The endoscope system includes an endoscope channel and an image acquisition device. The image acquisition device and the probe in the cavity detection system enter the cavity through the endoscope channel. The image acquisition device is used to acquire endoscopic images of the cavity.

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