Ultrasonic treatment head device for digestive tract

Abstract

The invention discloses an ultrasonic treatment head device for a digestive tract, which comprises an edge-folded cylindrical balloon, a support shaft, a cylindrical piezoelectric plate, a spraying ring, an axial pressing ring, a spraying pipe and a balloon medium water pipe, and is characterized in that an integrated PCB (Printed Circuit Board) is mounted on the support shaft, and the balloon medium water pipe penetrates through the support shaft; the cylindrical piezoelectric plate is sleeved on the supporting shaft, the edgefold cylindrical balloon is sleeved on the cylindrical piezoelectric plate, a water outlet hole is formed in one end part of the axial pressing ring, the end part is connected with the supporting shaft, meanwhile, a spraying ring is arranged on the periphery of the end part, a rotation stopping ball ring is arranged at the front end of the spraying ring, and a water outlet hole is formed in the other end of the spraying ring. The installed rotation stopping ball ring extrudes and seals the folded edge end of the folded edge cylindrical balloon, the other end of the axial pressing ring is provided with the spraying pipe in an inserted mode, and the spraying pipe is fixed through the folded edge pressing plug. The treatment head can be attached to the inner wall of the alimentary canal, complete coupling can be achieved when the treatment head encounters alimentary canals with different apertures, and the treatment effect is greatly improved.

Description

Technical Field

[0001] This invention relates to an ultrasound treatment head device for the digestive tract, belonging to the field of medical device technology. Background Technology

[0002] With the continuous improvement of people's living standards, the incidence of digestive tract diseases is also increasing year by year, which is closely related to our lifestyle, dietary habits, and environmental conditions. Currently, curing digestive tract diseases through lifestyle adjustments, dietary modifications, and medication is quite difficult, and the medical costs of minimally invasive surgery are too high, making it difficult for most patients to benefit. Therefore, we have designed an ultrasound treatment head device for the treatment of digestive tract diseases to overcome the current problems of difficult and expensive treatments. Summary of the Invention

[0003] The purpose of this invention is to provide an ultrasonic treatment head device for the digestive tract. This device can fit against the inner wall of the digestive tract and can achieve complete coupling when the treatment head encounters digestive tracts with different apertures, thus greatly improving the treatment effect.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: an ultrasound treatment head device for the digestive tract, comprising a folded cylindrical balloon, a support shaft, a cylindrical piezoelectric sheet, a spray ring, an axial clamping ring, a spray pipe, and a balloon medium water pipe.

[0005] An integrated PCB board is mounted on the support shaft, and a water pipe for the balloon medium runs through it.

[0006] The cylindrical piezoelectric sheet is mounted on the support shaft, and the positive and negative poles of the cylindrical piezoelectric sheet are electrically connected to the integrated PCB board.

[0007] The folded cylindrical balloon is fitted on the outside of the cylindrical piezoelectric sheet. One end of the folded cylindrical balloon has a folded structure, and the other end has a closed structure. A gap is left between the closed end and the end of the support shaft to allow the medium water to enter.

[0008] One end of the axial compression ring is provided with a water outlet hole, and this end is connected to the support shaft by a thread. At the same time, a spray ring is installed on the periphery of this end. The front end of the spray ring is provided with an anti-rotation ball ring. The installed anti-rotation ball ring squeezes and seals the folded end of the folded cylindrical bladder. The other end of the axial compression ring is inserted and installed with a spray pipe. The spray pipe is connected to the water outlet hole on the axial compression ring and the water outlet hole on the installed spray ring.

[0009] Furthermore, the support shaft is provided with holes and grooves. The holes are wire holes, pressure sensor positioning holes, and balloon medium water pipe positioning holes. The grooves are pressure sensor adhesive grooves, front sealing ring mounting grooves, and integrated PCB board mounting grooves. A front sealing ring is installed in the front sealing ring mounting groove. The front sealing ring is used to seal the front end of the cylindrical piezoelectric sheet.

[0010] Furthermore, one end of the support shaft is provided with a thread for installing an axial clamping ring, and both ends are provided with a front boss and a rear boss for positioning the cylindrical piezoelectric sheet, and a cavity is formed on the inner surface of the installed cylindrical piezoelectric sheet.

[0011] Furthermore, the inner surface of the cylindrical piezoelectric sheet is the positive electrode surface, and the outer surface is the negative electrode surface. The negative electrode surface is brought to the edge of the inner surface by means of a flange, and the negative electrode surface and the positive electrode surface are separated by a gap.

[0012] Furthermore, the integrated PCB board is provided with positive and negative antenna springs, a pressure sensor and a temperature and humidity sensor. The positive and negative antenna springs are in contact with the positive and negative surfaces of the cylindrical piezoelectric sheet and conduction. The pressure sensor and the integrated PCB board are connected by a flexible cable, and the pressure sensor is fixed in the pressure sensor positioning hole of the support shaft.

[0013] Furthermore, the integrated PCB board is connected to cables, one end of which is soldered to the integrated PCB board, and the other end is led out from inside the support shaft, axial clamping ring and spray pipe through a wire hole.

[0014] Furthermore, the folded cylindrical balloon has a single-sided opening structure, with one end sealed and the other end having a folded edge. After installation, the inner side of the folded edge of the balloon is attached to the right end face of the cylindrical piezoelectric sheet and the rear boss of the support shaft.

[0015] Furthermore, the spray ring is made of hard rubber and has a ring of water outlet holes. The spray direction of the openings of the water outlet holes on the spray ring is towards the side of the folded cylindrical bladder.

[0016] Furthermore, the anti-rotation ball ring consists of two ring plates and a ball retainer containing the balls. The balls rotate between the ring plates, converting sliding friction into rolling friction, thereby realizing the conversion and transmission of torque and axial force. After installation, the ring plates are attached to the outer side of the folded edge of the cylindrical balloon, pressing the folded edge of the balloon tightly.

[0017] Furthermore, the inner end of the spray pipe is provided with a flange, and the outer end of the axial clamping ring is connected with a flanged plug. The flanged plug is inserted into the spray pipe, and one end of it abuts against the flange of the spray pipe and is threaded to the axial clamping ring.

[0018] The beneficial effects of this invention are as follows:

[0019] (1) The ultrasonic treatment head is designed as a cylindrical shape with a balloon and a spray ring. The shape is close to the space inside the digestive tract. At the same time, water can be injected into the balloon and the spray ring to fill the inside and outside of the balloon with water, ensuring that the ultrasonic radiation path can be fully coupled. The shape of the balloon can be changed by controlling the amount of water injected into the balloon, ensuring that the treatment head can be fully coupled with the digestive tract with different apertures. In addition, the gap between the piezoelectric plate and the support shaft is sealed by the sealing ring and the balloon fold, which facilitates the maintenance, disassembly and assembly of the device and the replacement of the balloon.

[0020] (2) The piezoelectric sheet adopts a cylindrical shape, which can ensure that the ultrasonic radiation range covers 360°. The conduction method of the inward-flipped electrode contacting the positive and negative antenna springs avoids the instability of the piezoelectric sheet electrode welding wire conduction method, and also avoids the influence of welding temperature and welding point on the performance of the piezoelectric sheet.

[0021] (3) The front and rear bosses on the support shaft that mate with the inner surface of the piezoelectric sheet are designed to be hollow, so that a cavity is formed between the inner surface of the cylindrical piezoelectric sheet and the support shaft. This is equivalent to making an air backing for the piezoelectric sheet, which can eliminate internal ultrasonic reflection and improve the ultrasonic emission efficiency.

[0022] (4) The balloon has a folded edge. When the anti-rotation ball ring is used to press it, it can fix and seal the balloon, so that the balloon and the piezoelectric plate form a water injection cavity. It can also use the folded edge to seal the rear end gap formed by the piezoelectric plate and the support shaft boss.

[0023] (5) The pressure sensor on the integrated PCB board can detect the pressure inside the balloon. Based on the value, it can be determined whether the balloon is attached to the inner wall of the digestive tract, thereby achieving complete coupling. The temperature and humidity sensor on the integrated PCB board can detect the temperature and humidity in the cavity formed by the inner surface of the piezoelectric sheet and the support shaft. Based on the humidity value, it can be determined whether the cavity is leaking, thus preventing short circuit between the positive and negative poles of the piezoelectric sheet.

[0024] (6) The anti-rotation ball ring and the axial clamping ring are used together. When the axial clamping ring is installed, it will squeeze the anti-rotation ball ring, converting the torque into a uniform axial thrust. At the same time, it will press the ball fold and the piezoelectric sheet. Pressing the piezoelectric sheet can ensure that the front sealing ring can reliably seal the gap between the piezoelectric sheet and the front end of the support shaft. Pressing the ball fold can reliably seal the gap between the piezoelectric sheet and the rear end of the support shaft.

[0025] (7) The spray ring and the axial compression ring are used together. The spray ring is made of hard rubber. Hard rubber has a certain elasticity and can seal the gap between the axial compression ring and the spray ring. The water outlet on the axial compression ring connects the spray pipe and the inner cavity of the spray ring. When medium water is injected into the spray pipe, the medium water will enter the inner cavity of the spray ring from the water outlet of the axial compression ring, and then spray onto the outer wall of the balloon from the water outlet on the spray ring, so that the space between the outer wall of the balloon and the inner wall of the digestive tract is filled with medium water, which can ensure that the treatment head and the digestive tract can be completely coupled. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the device;

[0027] Figure 2 This is a cross-sectional view of the device;

[0028] Figure 3 This is an exploded view of the device;

[0029] Figure 4 These are detailed schematic diagrams of the support shaft, where (a) and (b) are structural diagrams from different viewpoints.

[0030] Figure 5 This is a detailed schematic diagram of an inwardly flanged electrode type cylindrical piezoelectric sheet;

[0031] Figure 6 This is a detailed schematic diagram of a folded cylindrical balloon.

[0032] Figure 7 This is a schematic diagram of the pressure sensor and integrated PCB board installation;

[0033] Figure 8 This is a schematic diagram of the installation of the front sealing ring and piezoelectric element;

[0034] Figure 9 This is a schematic diagram of the spray ring installation;

[0035] Figure 10 This is a schematic diagram of the installation of the balloon, anti-rotation ball ring, and axial clamping ring;

[0036] Figure 11 This is a schematic diagram of the installation of the spray pipe and the flanged plug;

[0037] Figure 12 This is a schematic diagram of the device's working process.

[0038] The diagram is labeled as follows: 1-Folded cylindrical balloon, 101-Balloon fold, 102-Single-sided opening, 2-Support shaft, 201-Support shaft front end face, 202-Front boss, 203-Rear boss, 204-Threaded end, 205-Wire hole, 206-Pressure sensor positioning hole, 207-Balloon medium water pipe positioning hole, 208-Sealing ring mounting groove, 209-PCB board mounting groove, 210-Pressure sensor adhesive groove, 211-Adhesive groove end face, 3-Integrated PCB board, 301-Pressure sensor, 302-Pressure sensor signal line, 303-Flexible cable, 304-Positive antenna spring, 305-Negative... 4-Front-end sealing ring, 5-Inwardly flanged cylindrical piezoelectric piece, 501-Left end face of piezoelectric piece, 502-Right end face of piezoelectric piece, 503-Positive electrode surface, 504-Negative electrode surface, 505-Positive and negative electrode gap, 506-Starting position of piezoelectric piece, 507-Installation position of piezoelectric piece, 508-Conducting positive electrode, 509-Conducting negative electrode, 6-Anti-rotation ball ring, 7-Spray ring, 701-Inner cavity of spray ring, 702-Water outlet of spray ring, 8-Axial clamping ring, 801-Water outlet of clamping ring, 802-Thread of clamping ring, 9-Flanged plug, 10-Spray pipe, 11-Cable, 12-Balloon medium water pipe. Detailed Implementation

[0039] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0040] like Figures 1 to 3 As shown, an ultrasound treatment head device for the digestive tract mainly consists of a folded cylindrical balloon 1, a support shaft 2, an integrated PCB board 3, a front sealing ring 4, an inner-flanged cylindrical piezoelectric sheet 5, an anti-rotation ball bearing ring 6, a spray ring 7, an axial compression ring 8, a folded pressure plug 9, a spray pipe 10, a cable 11, and a balloon medium water pipe 12. The integrated PCB board 3 is mounted on the support shaft 2, and the balloon medium water pipe 12 runs through its interior. The cylindrical piezoelectric sheet 5 is fitted onto the support shaft 2, and its positive and negative poles are electrically connected to the integrated PCB board 3. The folded cylindrical balloon 1 is fitted onto the outside of the cylindrical piezoelectric sheet 5. One end of the folded cylindrical balloon 1 has a folded structure, and the other end has a closed structure, with a gap between the closed end and the end of the support shaft for the medium water to enter. One end of the axial compression ring 8... The upper end is provided with a water outlet hole 801 of the compression ring, and this end is connected to the support shaft 2 by a thread. At the same time, a spray ring 7 is installed on the periphery of this end. The front end of the spray ring 7 is provided with an anti-rotation ball ring 6. After installation, the anti-rotation ball ring 6 squeezes and seals the folded edge 101 of the folded cylindrical balloon. The other end of the axial compression ring 8 is inserted and installed with a spray pipe 10. The spray pipe 10 is connected to the water outlet hole 801 on the axial compression ring 8 and the water outlet hole 702 on the installed spray ring.

[0041] like Figure 4As shown, the support shaft 2 has holes, namely a wire hole 205, a pressure sensor positioning hole 206, and a balloon medium water pipe positioning hole 207; the support shaft 2 also has grooves, namely a pressure sensor adhesive groove 210, a front sealing ring mounting groove 208, and an integrated PCB board mounting groove 209; the support shaft 2 is also provided with threads for installing an axial clamping ring and front bosses 202 and rear bosses 203 for positioning the piezoelectric sheet. The bosses are disconnected rather than continuous in order to form a cavity with the inner surface of the piezoelectric sheet. The front boss has notches spaced 90° apart in the circumferential direction.

[0042] like Figure 5 and 8 As shown, the cylindrical piezoelectric sheet 5 with inwardly flanged electrode is designed as a hollow cylinder. The inner surface of the piezoelectric sheet is the positive electrode surface 503, and the outer surface is the negative electrode surface 504. The negative electrode surface is led to the edge of the inner surface by the flange. The negative electrode surface and the positive electrode surface on the inner surface are separated by the positive and negative electrode gap 505. The piezoelectric sheet is mounted on the support shaft along the boss on the support shaft through its inner surface. The positive and negative electrode antenna springs on the integrated PCB board 3 are in contact with the positive and negative electrode surfaces of the piezoelectric sheet respectively and conduct electricity.

[0043] like Figure 6 and 10 As shown, the folded cylindrical balloon 1 adopts a single-sided opening method, thus forming the folded edge of the balloon. After the support shaft with the piezoelectric pad installed is inserted into the inner cavity of the balloon through the opening, the inner side of the folded edge of the balloon will be attached to the right end face of the piezoelectric pad and the rear protrusion of the support shaft.

[0044] like Figure 7 As shown, cable 11 is soldered to the soldering area of ​​integrated PCB board 3, and the other movable end passes through the wire hole 205 on the support shaft. Integrated PCB board 3 is equipped with positive antenna spring 304, negative antenna spring 305, pressure sensor 301 and temperature and humidity sensor. Pressure sensor 301 and integrated PCB board 3 are connected by flexible cable 303. During installation, pressure sensor 301 is first fixed in pressure sensor positioning hole 206 on support shaft with epoxy glue, and then integrated PCB board 3 is fixed to support shaft 2 with epoxy glue.

[0045] like Figure 8 As shown, the balloon medium water tube 12 is first installed in the balloon medium water tube positioning hole 207. After pre-fixation, epoxy glue is used to fill the inside of the support shaft to fix the water tube and seal the gap between the water tube and the hole. The front sealing ring 4 is directly installed in the sealing ring mounting groove 208 of the support shaft.

[0046] like Figure 9As shown, the spray ring 7 has a ring of water outlet holes and is made of hard rubber; the axial clamping ring 8 has water outlet holes, threads for mounting to the support shaft, and threads for mounting the flanged plug. The spray ring 7 is directly mounted on the axial clamping ring, and the hard rubber deforms to seal the gap between the axial clamping ring and the spray ring.

[0047] like Figure 10 As shown, the anti-rotation ball ring 6 consists of two annular plates and a ball cage (containing the balls). The balls rotate between the annular plates, converting sliding friction into rolling friction, realizing the conversion and efficient transmission of torque and axial force. It is installed on the support shaft with the annular plates attached to the outer side of the balloon fold. The axial clamping ring 8 with the spray ring 7 installed is installed on the support shaft. When the axial clamping ring is turned, it will squeeze the anti-rotation ball ring, so that the anti-rotation ball ring is subjected to axial force, and at the same time, it will clamp the balloon fold.

[0048] like Figure 11 As shown, the spray pipe 10 is provided with a flange, and the flanged plug 9 is provided with a thread. The flanged plug 9 passes through the spray pipe and abuts against the flange of the spray pipe, and is simultaneously screwed onto the axial clamping ring 8.

[0049] The manufacturing method of the ultrasonic treatment head device in this embodiment includes the following process steps:

[0050] S01: Take a cable of a certain length, preferably 1.5m; first, solder the cable to the soldering area on the integrated PCB board. The cable includes the positive and negative leads of the treatment head, the positive and negative leads of the sensor, and the signal transmission line; thread the cable through the through hole on the support shaft, passing it in through the through hole and out through the threaded end; install the pressure sensor on the integrated PCB board from the pressure sensor groove side into the pressure sensor mounting hole on the support shaft, with the pressure sensor flush with the front end face of the support shaft. Straighten the pressure sensor cable (flexible cable), adjust the position of the pressure sensor, and inject epoxy glue into the pressure sensor groove to fix the pressure sensor and fill the gap between the pressure sensor and the mounting hole; apply epoxy glue to the bottom surface of the integrated PCB board mounting groove on the support shaft, bend the pressure sensor cable while installing the integrated PCB board into the groove, with the end face of the integrated PCB board close to the end face of the pressure sensor groove on the support shaft. Adjust the cable position so that it is naturally stressed, and fill the remaining gap of the through hole with epoxy glue, and wait for the epoxy glue to cure.

[0051] S02: Take a balloon medium water tube of a certain length, preferably 1.5m; insert it into the balloon medium water tube hole on the support shaft, from the threaded end of the support shaft and from the end of the water tube hole. The end face of the water tube should be 2-3mm higher than the front end face of the support shaft to prevent glue from clogging the water tube. The water tube and the water tube hole are interference fit for initial fixation of the water tube position. The inner cavity between the water tube hole and the threaded end of the support shaft and the water tube form a glue injection cavity, which is used to fill epoxy glue to seal and fix the water tube. When filling the epoxy glue, the water tube and the support shaft should be erected with the threaded end on top. Fix the water tube and the support shaft, and inject a flowable epoxy glue into the cavity formed by the support shaft and the water tube. After curing, cut off the water tube protruding from the front end face of the support shaft and the excess cured glue, so that the water tube is flush with the front end face of the support shaft.

[0052] S03: The preferred internally flanged electrode type cylindrical piezoelectric sheet has a working frequency of 3MHz, an outer diameter of 9mm, and a length of 15mm. The gap between the flanged negative electrode surface and the positive electrode surface on its inner surface is preferably 1mm. The preferred front sealing ring has a cross-sectional diameter of 0.4mm and an outer diameter of 8mm. The front sealing ring first passes through the cable and the balloon medium water pipe, and then is installed in the front sealing ring mounting groove on the support shaft. The preferred groove width is 0.5mm and the groove depth is 0.3mm. Subsequently, the piezoelectric sheet is passed through the cable. The cylindrical piezoelectric element is installed on the support shaft along with the water pipe containing the balloon medium. The cylindrical piezoelectric element is then inserted into the support shaft through the front and rear bosses on the support shaft. The piezoelectric element is installed on the boss of the support shaft from the left end face of the piezoelectric element, close to the front end face of the support shaft. The outer diameter of the boss and the inner diameter of the piezoelectric element are fitted with a small clearance tolerance to ensure the coaxiality of the piezoelectric element. The boss has notches at 90° intervals around its circumference to ensure that the negative electrode surface of the piezoelectric element reliably contacts the negative antenna spring on the integrated PCB board, and the positive electrode surface of the piezoelectric element reliably contacts the positive antenna spring on the integrated PCB board.

[0053] S04: Install the spray ring onto the axial clamping ring. The spray ring and the axial clamping ring are interference fit. The spray ring is made of a hard rubber material with a certain degree of elasticity. The hard rubber is compressed and deformed to seal the gap between itself and the axial clamping ring. The water outlet of the axial clamping ring is connected to the inner cavity of the spray ring. The medium water enters the inner cavity of the spray ring from the axial clamping ring and is then sprayed out to the outside from the water outlet of the spray ring.

[0054] S05: Install the support shaft with the piezoelectric pad installed into the folded cylindrical balloon from the balloon opening. Adjust the balloon position so that the inner side of the folded edge of the balloon is against the rear boss of the support shaft and the right end face of the piezoelectric pad. Pass the anti-rotation ball ring through the cable and the balloon medium water pipe, then put it on the support shaft and place it against the outer side of the balloon folded edge. Pass the axial clamping ring with the spray ring installed through the cable and the balloon medium water pipe, then install it on the support shaft by thread. Tighten the axial clamping ring to squeeze the anti-rotation ball ring so that it presses the balloon folded edge and the piezoelectric pad together. When the piezoelectric pad is pressed together, it ensures that the front sealing ring can reliably seal the gap between the front piezoelectric pad and the support shaft. Pressing the balloon folded edge ensures that the gap between the rear piezoelectric pad and the support shaft is reliably sealed.

[0055] S06: Take a spray pipe of a certain length, preferably 1m. Insert the cable and the balloon medium water pipe into the spray pipe from the flange side. Put the flange plug on the spray pipe to press against the flange of the spray pipe. Then install the flange plug onto the axial clamping ring through the thread and tighten the flange plug to press the spray pipe.

[0056] The working process of the ultrasonic therapy head device in this embodiment is as follows:

[0057] After the ultrasonic treatment head device is prepared, it is inserted into the digestive tract and the medium water is injected into the balloon through the medium water tube, at which point the balloon is filled with medium water. Then, the medium water is sprayed to the outside of the balloon through the spray tube, axial compression ring and spray ring. After the device and the inner wall of the digestive tract are coupled, the device is started to radiate ultrasound to begin treatment. After the radiation is completed, the spraying of medium water is stopped and the medium water inside the balloon is drained. The ultrasonic treatment head device is then removed.

[0058] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the scope of protection of the present invention in any way, and all technical solutions obtained by equivalent substitution or other means fall within the scope of protection of the present invention.

[0059] All parts not covered in this invention are the same as or can be implemented using existing technologies.

Claims

1. An ultrasonic therapy head device for the digestive tract, characterized in that, It includes a folded cylindrical balloon, a support shaft, a cylindrical piezoelectric sheet, a spray ring, an axial clamping ring, a spray pipe, and a balloon medium water pipe. An integrated PCB board is mounted on the support shaft, and a water pipe for the balloon medium runs through it. The cylindrical piezoelectric sheet is mounted on the support shaft, and the positive and negative poles of the cylindrical piezoelectric sheet are electrically connected to the integrated PCB board. The folded cylindrical balloon is fitted on the outside of the cylindrical piezoelectric sheet. One end of the folded cylindrical balloon has a folded structure, and the other end has a closed structure. A gap is left between the closed end and the end of the support shaft to allow the medium water to enter. One end of the axial compression ring is provided with a water outlet hole, and this end is connected to the support shaft by a thread. At the same time, a spray ring is installed on the periphery of this end. The front end of the spray ring is provided with an anti-rotation ball ring. The installed anti-rotation ball ring squeezes and seals the folded end of the folded cylindrical bladder. The other end of the axial compression ring is inserted and installed with a spray pipe. The spray pipe is connected to the water outlet hole on the axial compression ring and the water outlet hole on the installed spray ring.

2. The ultrasonic therapy head device for the digestive tract according to claim 1, characterized in that, The support shaft has holes and grooves. The holes are wire holes, pressure sensor positioning holes, and balloon medium water pipe positioning holes. The grooves are pressure sensor glue grooves, front sealing ring mounting grooves, and integrated PCB board mounting grooves. A front sealing ring is installed in the front sealing ring mounting groove. The front sealing ring is used to seal the front end of the cylindrical piezoelectric sheet.

3. The ultrasonic therapeutic head device for the digestive tract according to claim 1, characterized in that, One end of the support shaft is provided with a thread for installing an axial clamping ring, and both ends are provided with a front boss and a rear boss for positioning a cylindrical piezoelectric sheet. After installation, a cavity is formed on the inner surface of the cylindrical piezoelectric sheet.

4. The ultrasonic therapeutic head device for the digestive tract according to claim 1, characterized in that, The inner surface of the cylindrical piezoelectric sheet is the positive electrode surface, and the outer surface is the negative electrode surface. The negative electrode surface is brought to the edge of the inner surface by means of a flange, and the negative electrode surface and the positive electrode surface are separated by a gap.

5. The ultrasonic therapeutic head device for the digestive tract according to claim 1, characterized in that, The integrated PCB board is equipped with positive and negative antenna springs, a pressure sensor, and a temperature and humidity sensor. The positive and negative antenna springs are in contact with the positive and negative surfaces of the cylindrical piezoelectric sheet and conduction. The pressure sensor and the integrated PCB board are connected by a flexible cable, and the pressure sensor is fixed in the pressure sensor positioning hole of the support shaft.

6. The ultrasonic therapeutic head device for the digestive tract according to claim 5, characterized in that, The integrated PCB board is connected to a cable, one end of which is soldered to the integrated PCB board, and the other end is led out from the inside of the support shaft, axial clamping ring and spray pipe through a wire hole.

7. The ultrasonic therapeutic head device for the digestive tract according to claim 1, characterized in that, The folded cylindrical balloon has a single-sided opening structure, with one end sealed and the other end having a folded edge. After installation, the inner side of the folded edge of the balloon is attached to the right end face of the cylindrical piezoelectric sheet and the rear boss of the support shaft.

8. The ultrasonic therapeutic head device for the digestive tract according to claim 1, characterized in that, The spray ring is made of hard rubber and has a ring of water outlet holes. The spray direction of the water outlet holes on the spray ring is towards the side of the folded cylindrical balloon.

9. The ultrasonic therapeutic head device for the digestive tract according to claim 1, characterized in that, The anti-rotation ball ring consists of two ring plates and a ball cage containing the balls. The balls rotate between the ring plates, converting sliding friction into rolling friction, thereby realizing the conversion and transmission of torque and axial force. After installation, the ring plates are attached to the outer side of the folded edge of the cylindrical balloon, pressing the folded edge of the balloon tightly.

10. The ultrasonic therapeutic head device for the digestive tract according to claim 1, characterized in that, The inner end of the spray pipe is provided with a flange, and the outer end of the axial clamping ring is connected to a flanged plug. The flanged plug is inserted into the spray pipe, and one end of it abuts against the flange of the spray pipe and is threaded to the axial clamping ring.

Images