Occlusion devices for generating cervical occlusion pressure and methods of use thereof

Abstract

The invention discloses an occlusion device for generating cervical occlusion pressure and a method of using the same. The plugging device comprises a suction cup, the lower portion of the suction cup is in an outer arc shape, and the middle of the suction cup is connected with a hysteroscope access plugging pipe. The upper end of the first air bag is connected with an air feeding pipe, the outer side of the air feeding pipe is connected with the outer side of the hysteroscope access plugging pipe, and the end, away from the first air bag, of the air feeding pipe penetrates through the suction cup and is connected with the second air bag. Under the action of the vacuum pump, air between the suction cup and the outer wall of the cervix uteri can be sucked out, at the moment, air pressure between the suction cup and the outer wall of the cervix uteri becomes low and is smaller than external atmospheric pressure, and air pressure difference is formed, so that the suction cup can be adsorbed to the outside of the cervix uteri, and after the suction cup is adsorbed to the outside of the cervix uteri, the effect of blocking the cervix uteri can be achieved; normal saline is prevented from flowing out of the cervix, and the stability of the suction cup can be improved under the action of the first air bag.

Description

Technical Field

[0001] The present invention belongs to the technical field of uterine cavity examination assistance, and in particular relates to a blocking device for generating cervical blocking pressure and a method of using the device. Background Art

[0002] The cervix is ​​the lower part of the uterus, connecting the vagina and the uterine body. It secretes alkaline mucus and is a high-incidence site for tumors. The uterine cavity is the internal space of the uterus, where menstruation occurs and the fetus is conceived. Its shape and capacity change with the menstrual cycle and pregnancy. For women, the significance of performing a uterine cavity examination is that it can help doctors more accurately diagnose and evaluate the health of the inside of the uterus, thereby developing personalized treatment plans, improving treatment outcomes, and maintaining women's reproductive health and quality of life. This examination is crucial for timely detection and treatment of potential health problems, and is an important part of protecting women's health.

[0003] In the prior art, the main tool used for uterine cavity examination is a hysteroscope. Before the examination, physiological saline is injected into the uterine cavity to fill the uterine cavity and maintain a certain pressure. The purpose is to improve the visualization of the inside of the uterine cavity, thereby helping doctors to observe the morphology and pathological conditions inside the uterine cavity more clearly. However, the uterine cavity and the vagina are connected through the cervix. When the physiological saline is injected into the uterine cavity, as the pressure in the uterine cavity increases, part of the physiological saline will flow out of the uterine cavity from the cervical opening, causing the pressure inside the uterine cavity to decrease, affecting the doctor's observation of the internal morphology and pathological conditions of the uterine cavity. In order to continue observation, medical staff need to continuously add physiological saline to the inside of the uterine cavity to maintain sufficient filling.

[0004] Although continuous injection of saline solution can ensure that the doctor can observe the internal morphology and pathological conditions of the uterine cavity, repeated injection of saline solution will increase the time consumed by the examination, resulting in low examination efficiency. Summary of the invention

[0005] One of the purposes of the present invention is to solve the problem in the prior art that physiological saline needs to be repeatedly injected, resulting in low inspection efficiency.

[0006] The second purpose of the present invention is to solve the problem that the air bag slides out from the inner wall of the cervical opening.

[0007] The third purpose of the present invention is to solve the problem that the suction cup is complicated and troublesome when removing it, and it is easy to cause pain to the subject.

[0008] The purpose of the present invention can be achieved through the following technical solutions:

[0009] The blocking device used to generate cervical blocking pressure includes a suction cup, the bottom of the suction cup is in an outer arc shape, and the middle of the suction cup is connected to a hysteroscope inlet and outlet blocking tube;

[0010] A first air bag is connected to the outer side of the lower end of the hysteroscope access blocking tube, both ends of the first air bag are arc-shaped, an air supply tube is connected to the upper end of the first air bag, the outer side of the air supply tube is connected to the outer side of the hysteroscope access blocking tube, one end of the air supply tube away from the first air bag passes through the suction cup and is connected to the second air bag, and a regulating valve is arranged at a position of the air supply tube close to the second air bag;

[0011] A connecting tube is connected above the suction cup, an insert tube is inserted into the end of the connecting tube away from the suction cup, the outer wall of the insert tube fits the inner wall of the connecting tube, the end of the insert tube away from the connecting tube is connected to a hose, and the end of the hose away from the connecting tube is connected to a vacuum pump;

[0012] A pressure indicator is connected above the vacuum pump.

[0013] Preferably, the outside of the connecting tube is connected to the outside of the corresponding insert tube with symmetrically arranged positioning rods, the positioning rods are L-shaped, and the front end of the positioning rods is triangular;

[0014] A fixing plate is connected to the position of the positioning rod on the outside of the insert tube. A symmetrically arranged through hole is opened on the fixing plate at the position corresponding to the positioning rod. The front end of the positioning rod passes through the through hole, and the front end of the positioning rod is in contact with the side of the fixing plate away from the outer suction cup.

[0015] An annular plate is connected to a position inside the connecting pipe corresponding to the inserting tube, and the inserting tube is fitted with the annular plate.

[0016] Preferably, the outside of the connecting pipe is connected to the air intake pipe, the inside of the air intake pipe is connected to the positioning plate, the upper surface of the positioning plate is connected to symmetrically arranged connecting seats, and a first connecting rod is connected between the two connecting seats; the outer side of the first connecting rod is rotatably connected to a cover plate, the outer side of the first connecting rod is rotatably connected to a torsion spring, one end of the torsion spring is connected to the cover plate, and the other end is connected to the positioning plate.

[0017] Preferably, a top plate is provided at the upper end of the air inlet pipe, and a sealing ring is connected to the opening of the air inlet pipe below the top plate.

[0018] Preferably, the lower surface of the top plate is connected to symmetrically arranged positioning seats, a second connecting rod is connected between the two positioning seats, the second connecting rod is externally sleeved with a ring, a pull rope is connected below the ring, a fixing ring is connected to the upper surface of the cover plate away from the torsion spring, and the fixing ring is connected to the pull rope above.

[0019] Preferably, the outside of the air intake pipe is connected to a symmetrically arranged outer shell, a slide plate is slidably connected inside the outer shell, a third connecting rod is connected between the slide plate and the top plate, a spring is connected between the slide plate and the outer shell, and the third connecting rod is located inside the spring.

[0020] A method for using a sealing device for generating cervical sealing pressure comprises the following steps:

[0021] S1: Insert the hysteroscope access and occlusion tube into the uterine cavity, and insert the first air bag into the uterine cavity.

[0022] S2: Fine-adjust the position of the suction cup to fit it with the outside of the cervical opening. After fitting, the medical staff turns on the vacuum pump to extract the air between the suction cup and the cervical opening. At this time, the air pressure between the suction cup and the cervical opening becomes lower, which is lower than the external atmospheric pressure, forming an air pressure difference, so that the suction cup can be adsorbed on the outside of the cervical opening. After the suction cup is adsorbed on the outside of the cervical opening, it can also play a role in blocking the cervical opening and preventing saline from flowing out of the cervical opening.

[0023] S3: In order to prevent gas from flowing out of the vagina and gradually entering the suction cup, causing the suction cup to fall off, the vacuum pump needs to be running all the time to keep the pressure between the suction cup and the cervix within the specified range.

[0024] S4: After the suction cup is attached to the outside of the cervical opening, the medical staff pinches the second airbag to squeeze out the gas in the second airbag and send it into the first airbag through the air delivery tube. After receiving the gas, the first airbag will expand and continuously squeeze the inner wall of the cervical opening. Then, the regulating valve is turned to close the air delivery tube to isolate the gas flow between the first and second airbags, so that the first airbag can remain in an expanded state to increase the stability of the occlusion device. At this time, a small amount of saline will flow out from the inner wall of the cervical opening, but it will be blocked by the suction cup and cannot flow out of the cervix into the vagina. At this time, the injected saline will not flow out.

[0025] S5: Physiological saline is added into the uterine cavity through the hysteroscope access occlusion tube, and the uterine cavity is examined using a hysteroscope.

[0026] S6: After the uterine cavity examination is completed, turn the regulating valve to open the air supply tube to connect the first airbag with the outside. After the connection, the excess air in the first airbag will return to the second airbag through the air supply tube, causing the first airbag to shrink. At this time, the pressure at the cervix becomes smaller and is no longer blocked.

[0027] S7: The medical staff lifts the top plate to allow air to enter between the suction cup and the cervical opening through the air inlet tube. After the air enters, the air pressure between the suction cup and the cervical opening is consistent with the external air pressure, causing the suction cup to fall off from the outside of the cervical opening. At this time, the suction cup is removed from the outside of the cervical opening, and the hysteroscope entry and exit blocking tube and the first air bag are taken out of the uterine cavity respectively.

[0028] Beneficial effects of the present invention:

[0029] According to the present invention, after the suction cup is adsorbed on the outside of the cervical opening, the medical staff pinches the second airbag to squeeze out the gas in the second airbag and delivers the gas into the first airbag through the air delivery tube. After receiving the gas, the first airbag expands to exert pressure on the inner wall of the cervical opening, thereby increasing the stability of the blocking device on the inner wall of the cervical opening. The regulating valve is turned to close the air delivery tube to isolate the gas flow between the first airbag and the second airbag, so that the first airbag can be kept in an expanded state, and the suction cup blocks the cervical opening, preventing saline from flowing out of the uterine cavity, reducing the pressure in the uterine cavity, and preventing saline from being wasted. At the same time, there is no need to add saline into the uterine cavity again, thereby improving efficiency.

[0030] The present invention enables medical staff to start the vacuum pump, and under the action of the vacuum pump, the air between the suction cup and the outer wall of the cervical os can be sucked out. At this time, the air pressure between the suction cup and the outer wall of the cervical os becomes lower and is lower than the external atmospheric pressure, forming an air pressure difference, so that the suction cup can be adsorbed on the outside of the cervical os. After the suction cup is adsorbed on the outside of the cervical os, it can play a role in blocking the cervical os, preventing physiological saline from flowing out of the cervical os, and the stability of the suction cup can be improved under the action of the first air bag.

[0031] After the uterine cavity examination is completed, when the suction cup needs to be taken out from the cervical opening, the medical staff lifts the top plate. After the top plate is lifted, the top plate of the air inlet pipe loses its seal, and the rising of the top plate drives the second connecting rod, the ring and the pull rope to rise. After the pull rope rises, it will pull the fixing ring upward, and under the action of the fixing ring, the cover plate rotates clockwise with the first connecting rod as the center. After the cover plate rotates, the gap in the middle of the positioning plate is exposed, and the air inlet pipe loses its seal at this time, and air can enter between the suction cup and the outer wall of the cervical opening through the air inlet pipe. After the air enters, the air pressure between the suction cup and the outer wall of the cervical opening is consistent with the external air pressure, so that the suction cup falls off from the outside of the cervical opening. Compared with the original method of removing the suction cup using a lubricant or warm water, the efficiency is improved and the pain of the parturient can be relieved at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] Figure 1 is a stereogram of the present invention;

[0034] Figure 2 is a cross-sectional view of the present invention;

[0035] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0036] Figure 4 It is a three-dimensional diagram of the fixing plate in the present invention;

[0037] Figure 5 is a cross-sectional view of the outer shell in the present invention;

[0038] Figure 6 It is a schematic diagram of the use of the blocking device of the present invention at the cervical opening.

[0039] In the figure: 1. Suction cup; 2. Connecting pipe; 3. Insertion tube; 4. Air inlet pipe; 5. Top plate; 6. Shell;

[0040] 11. Hysteroscope access blocking tube; 12. First air bag; 13. Air delivery tube; 14. Second air bag; 15. Regulating valve;

[0041] 31. Hose; 32. Vacuum pump; 33. Pressure indicator; 34. Positioning rod; 35. Fixing plate; 36. Through hole; 37. Ring plate;

[0042] 41. Positioning plate; 42. Connecting seat; 43. First connecting rod; 44. Cover plate; 45. Torsion spring;

[0043] 51. Sealing ring; 52. Positioning seat; 53. Second connecting rod; 54. Ring; 55. Draw rope; 56. Fixing ring;

[0044] 61. slide plate; 62. third connecting rod; 63. spring;

[0045] 7-Hysteroscopy. DETAILED DESCRIPTION

[0046] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1 - Figure 5 As shown, the blocking device for generating cervical blocking pressure includes a suction cup 1 for adsorbing on the outside of the cervical os;

[0048] The bottom of the suction cup 1 is in an outer arc shape. With this arrangement, when the suction cup 1 is used to suck the outside of the cervical opening, it can be sucked quickly and more stably after being sucked;

[0049] A hysteroscope access blocking tube 11 is connected to the middle of the suction cup 1. The hysteroscope access blocking tube 11 is used to deliver physiological saline into the uterine cavity and enable the main body of the hysteroscope 7 to smoothly enter and exit the uterine cavity.

[0050] A first air bag 12 is connected to the outer side of the lower end of the hysteroscope entry and exit blocking tube 11 to increase the stability of the blocking device and prevent the suction cup 1 from falling off the cervical opening;

[0051] Both ends of the first airbag 12 are arc-shaped, and this arrangement makes it easy for the first airbag 12 to be inserted into the inner wall of the cervical opening;

[0052] An air supply tube 13 is connected to the upper end of the first air bag 12, and the outer side of the air supply tube 13 is connected to the outer side of the hysteroscope access blocking tube 11. One end of the air supply tube 13 away from the first air bag 12 passes through the suction cup 1 and is connected to the second air bag 14. A regulating valve 15 is provided at a position of the air supply tube 13 near the second air bag 14.

[0053] When in use, the hysteroscope entry and exit blocking tube 11 is inserted through the cervical os. At this time, the suction cup 1 is close to the outside of the cervical os. By fine-tuning the position of the suction cup 1 to fit the outside of the cervical os, the suction cup 1 is adsorbed on the outside of the cervical os, so that the hysteroscope entry and exit blocking tube 11 can pass through the cervical os and enter the uterine cavity;

[0054] After the suction cup 1 is adsorbed on the outside of the cervical opening, the medical staff pinches the second airbag 14 to squeeze out the gas in the second airbag 14 and send it into the first airbag 12 through the air delivery tube 13. After the first airbag 12 receives the gas, it will expand and continuously squeeze the inner wall of the cervical opening, and then the regulating valve 15 is turned to close the air delivery tube 13 to isolate the gas flow between the first airbag 12 and the second airbag 14, so that the first airbag 12 can remain in an expanded state to increase the stability of the occlusion device. At this time, a small amount of physiological saline will flow out from the inner wall of the cervical opening, but it will be blocked by the suction cup 1 and cannot flow out of the cervix into the vagina. At this time, the regulating valve 15 is turned to close the air delivery tube 13 to isolate the gas flow between the first airbag 12 and the second airbag 14, so that the first airbag 12 can remain in an expanded state. When disassembly is required, It is only necessary to open the regulating valve 15 to discharge the gas in the first airbag 12. At this time, the squeezing force between the first airbag 12 and the inner wall of the cervical opening is reduced, so as to facilitate the removal of the blocking device. In addition, for the second airbag 14, two one-way air inlet valves arranged in the same direction are provided on the second airbag 14. When inflating, the regulating valve 15 is in a closed state. When the second airbag 14 is pressed, the gas in the second airbag 14 will continuously enter the air delivery pipe 13. At this time, the first one-way valve acts to ensure that the gas entering the air delivery pipe 13 will not flow back into the second airbag 14. After the second airbag 14 is squeezed, due to the pressure difference between the inside and the outside, the second one-way valve acts to complete the inflation in the second airbag 14 again. The inflation makes the internal and external tensions equal. Then, the pressing operation is performed to inflate the first airbag 12.

[0055] Specifically, during the treatment of the patient, firstly, physiological saline is injected into the uterine cavity to ensure that the uterine cavity pressure is maintained at 100-110 mmHg, and then the uterine cavity is completely sealed using the technical solution to avoid the overflow of physiological saline in the uterine cavity during the treatment, which causes the internal pressure to decrease. Figure 1-2It can be known that a hysteroscope can be directly inserted into the hysteroscope access blocking tube 11 to enter the patient's cervix for observation, and a sealing ring is provided in the hysteroscope access blocking tube 11. When the hysteroscope is not inserted, the hysteroscope access blocking tube 11 is in a closed state. After the hysteroscope is inserted, the sealing ring quickly fits with the tube wall of the hysteroscope to form a seal, thereby preventing the internal saline from flowing out of the hysteroscope access blocking tube 11.

[0056] The hysteroscope entry and exit sealing tube 11 is preferably made of a silicone tube, which has great elasticity, is easy to form a seal, and is convenient for sealing after the hysteroscope is inserted. The specific structure can be provided with a silicone one-way valve on one side of the sealing ring. The silicone one-way valve realizes the early closure, and after the hysteroscope is inserted, it is connected with the sealing ring by interference fit to complete the closure.

[0057] After the uterine cavity examination is completed, turn the regulating valve 15 to open the air supply tube 13, so that the first air bag 12 is connected with the outside. After the connection, the excess air in the first air bag 12 will flow out, causing the first air bag 12 to shrink. At this time, the inner wall pressure of the cervical opening becomes smaller, and there is no squeezing force on the inner wall of the cervical opening. Then pull the suction cup 1 to remove it from the outside of the cervical opening, and take out the hysteroscope entry and exit blocking tube 11 and the first air bag 12 from the uterine cavity respectively.

[0058] A connecting tube 2 is connected above the suction cup 1 to assist in extracting the gas between the outer wall of the cervical opening and the inner wall of the suction cup 1, so that the suction cup 1 can be stably adsorbed on the outside of the cervical opening;

[0059] An insert tube 3 is inserted into the end of the connecting tube 2 away from the suction cup 1, and the outer wall of the insert tube 3 fits the inner wall of the connecting tube 2. Through this arrangement, when the insert tube 3 is inserted into the connecting tube 2, a sealing effect can be achieved;

[0060] The end of the insert tube 3 away from the connecting tube 2 is connected to the hose 31, and the end of the hose 31 away from the connecting tube 2 is connected to the vacuum pump 32. Through the cooperation of the connecting tube 2, the insert tube 3, the hose 31 and the vacuum pump 32, the gas between the suction cup 1 and the outer wall of the cervical opening can be extracted, so that the suction cup 1 is adsorbed on the outside of the cervical opening.

[0061] A pressure indicator 33 is connected above the vacuum pump 32 to observe the pressure in the suction cup 1 so that medical staff can make timely adjustments to avoid injury to the subject;

[0062] When the vacuum pump 32 is used to extract the air between the suction cup 1 and the outer wall of the cervical os, the medical staff needs to pay attention to the pressure indicator 33 at all times to keep the pressure between the suction cup 1 and the cervix within a specified range to prevent damage to the subject;

[0063] The outside of the connecting tube 2 is connected to the outside of the insert tube 3 with symmetrically arranged positioning rods 34, the positioning rods 34 are L-shaped, and the front end of the positioning rods 34 is triangular, which is used to fix the insert tube 3;

[0064] A fixing plate 35 is connected to the position of the positioning rod 34 on the outside of the insert 3. The positioning rod 34 is made of plastic material and can be reset.

[0065] The fixing plate 35 is provided with symmetrically arranged through holes 36 at positions corresponding to the positioning rods 34. The front end of the positioning rods 34 passes through the through holes 36, and the front end of the positioning rods 34 is fitted with the side of the fixing plate 35 away from the outer suction cup 1. The position of the connecting tube 2 corresponding to the insert tube 3 is connected with an annular plate 37, and the insert tube 3 is fitted with the annular plate 37. The cylinder is fixed by the cooperation of the positioning rods 34, the fixing plate 35 and the annular plate 37.

[0066] Reference Figure 6 , is a schematic diagram of the installation and use of the technical solution at the cervical os. When it is used specifically, after the suction cup 1 is inserted into the vagina and corresponds to and fits the outside of the cervical os, the medical staff starts the vacuum pump 32. Under the action of the vacuum pump 32, the gas between the suction cup 1 and the outer wall of the cervical os can be sucked out. After the air is sucked out, the air pressure between the suction cup 1 and the outer wall of the cervical os becomes lower, which is lower than the external atmospheric pressure, forming an air pressure difference, so that the suction cup 1 can be adsorbed on the outside of the cervical os, and then the second air bag 14 is used to inflate the first air bag 12, so that the first air bag 12 expands and continuously squeezes the inner wall of the cervical os, so as to increase the stability of the blocking device, so that the blocking device can stably fit on the outer wall of the cervix, and keep the position of the hysteroscope entering and exiting the blocking tube 11, so as to ensure the use of the hysteroscope;

[0067] In order to prevent the gas in the cervical os from flowing out and gradually entering the suction cup 1 during the uterine cavity examination, causing the suction cup 1 to fall off, the vacuum pump 32 needs to be in operation all the time to keep the pressure between the suction cup 1 and the outer wall of the cervical os within a specified range;

[0068] Among them, the connecting hose 31 is made of soft material, and can be connected to the external vacuum pump 32 by bending or continuous bending. The air supply pipe 13 is also made of soft material, and can be connected to the external second airbag 14 by bending or continuous bending.

[0069] After the uterine cavity examination is completed, when the suction cup 1 is removed for cleaning or replacement, the insert tube 3 needs to be removed from the connecting tube 2. When taking it out, the medical staff pinches the two positioning rods 34 at the same time, so that the front ends of the two positioning rods 34 are close to the outer wall of the connecting tube 2. When the front ends of the positioning rods 34 correspond to the through holes 36, the fixing plate 35 loses its obstruction, and then the cylinder loses its obstruction. At this time, the insert tube 3 is taken out of the connecting tube 2. The outside of the connecting tube 2 is connected to the air inlet pipe 4, which is located between the sealing plate and the suction cup 1, and is used to disassemble the suction cup 1;

[0070] The outside of the connecting pipe 2 is connected to the air intake pipe 4, and the inside of the air intake pipe 4 is connected to a positioning plate 41 for assisting in sealing the air intake pipe 4;

[0071] The upper surface of the positioning plate 41 is connected with symmetrically arranged connection seats 42, a first connection rod 43 is connected between the two connection seats 42, and a cover plate 44 is rotatably connected to the outer side of the first connection rod 43 for preliminary sealing of the intake pipe 4;

[0072] The first connecting rod 43 is externally rotatably connected to a torsion spring 45 , one end of the torsion spring 45 is connected to the cover plate 44 , and the other end is connected to the positioning plate 41 , for resetting the cover plate 44 ;

[0073] A top plate 5 is provided at the upper end of the air intake pipe 4, and a sealing ring 51 is connected to the opening of the air intake pipe 4 below the top plate 5. The top plate 5 cooperates with the sealing ring 51 to enhance the sealing performance of the air intake pipe 4.

[0074] The lower surface of the top plate 5 is connected with symmetrically arranged positioning seats 52, a second connecting rod 53 is connected between the two positioning seats 52, the second connecting rod 53 is sleeved with a collar 54 on the outside, a pull rope 55 is connected below the collar 54, a fixing ring 56 is connected to the upper surface of the cover plate 44 away from the torsion spring 45, and the upper part of the fixing ring 56 is connected to the pull rope 55;

[0075] The air inlet pipe 4 is externally connected to a symmetrically arranged housing 6, a slide plate 61 is slidably connected inside the housing 6, a third connecting rod 62 is connected between the slide plate 61 and the top plate 5, and the third connecting rod 62 cooperates with the housing 6 and the slide plate 61 so that the top plate 5 can only move in one direction;

[0076] A spring 63 is connected between the slide plate 61 and the housing 6, and the third connecting rod 62 is located inside the spring 63, and is used to reset the top plate 5, the third connecting rod 62 and the slide plate 61;

[0077] In specific use, after the uterine cavity examination is completed, when the suction cup 1 needs to be taken out from the cervical opening, the medical staff lifts the top plate 5. After the top plate 5 rises, the top plate 5 of the air inlet pipe 4 loses its seal, and the top plate 5 rises to drive the second connecting rod 53, the ring 54 and the pull rope 55 to rise. After the pull rope 55 rises, it will pull the fixing ring 56 upward, and under the action of the fixing ring 56, the cover plate 44 rotates clockwise with the first connecting rod 43 as the center. After the cover plate 44 rotates, the gap in the middle of the positioning plate 41 is exposed, and at this time the air inlet pipe 4 loses its seal, and air can enter between the suction cup 1 and the cervical opening through the air inlet pipe 4. After the air enters, the air pressure between the suction cup 1 and the cervical opening is consistent with the external air pressure, so that the suction cup 1 falls off from the outside of the cervical opening. Compared with the original method of removing the suction cup 1 using lubricants or warm water, the suction cup 1 can be removed conveniently and quickly, which improves efficiency and can also reduce the pain of the examinee.

[0078] When the top plate 5 rises, the slide plate 61 and the third connecting rod 62 will rise together. The rise of the slide plate 61 will squeeze the spring 63. The spring 63 will contract under the pressure and store the restoring force. After the suction cup 1 falls off from the outside of the cervical opening, the medical staff can loosen the top plate 5. Under the action of the spring 63 and the third connecting rod 62, the top plate 5 will return to its original position.

[0079] When the cover plate 44 rotates, pressure is applied to the torsion spring 45, which will tighten under the pressure and store restoring force. After the suction cup 1 falls off from the outside of the cervical opening and the medical staff releases the top plate 5, the cover plate 44 will return to its original position under the action of the torsion spring 45.

[0080] The method for using the blocking device comprises the following steps:

[0081] S1: inserting the hysteroscope access and blocking tube 11 into the uterine cavity, and inserting the first air bag 12 into the uterine cavity.

[0082] S2: Finely adjust the position of the suction cup 1 to fit the outside of the cervical os. After fitting, the medical staff turns on the vacuum pump 32 to extract the air between the suction cup 1 and the cervical os. At this time, the air pressure between the suction cup 1 and the cervical os becomes lower and is lower than the external atmospheric pressure, forming an air pressure difference, so that the suction cup 1 can be adsorbed on the outside of the cervical os. After the suction cup 1 is adsorbed on the outside of the cervical os, it can play a role in blocking the cervical os and prevent physiological saline from flowing out of the cervical os.

[0083] Specifically, the vacuum pump 32 draws air so that the suction cup 1 fits tightly against the outer wall of the cervix, ensuring that the physiological saline inside the uterine cavity will not leak, so that the pressure inside the uterine cavity can be maintained at 100-110 mmHg, and the maximum pressure does not exceed 150 mmHg. Under this pressure environment, it is firstly convenient for medical staff to check, and secondly, it is more comfortable for patients and will not cause great pain;

[0084] S3: In order to prevent gas in the vagina from flowing out and gradually entering the suction cup 1, resulting in a reduction in the pressure difference between the suction cup 1 and the cervical opening, causing the suction cup 1 to fall off, the vacuum pump 32 needs to be in operation all the time to keep the pressure between the suction cup 1 and the cervix within a specified range.

[0085] S4: After the suction cup 1 is adsorbed on the outside of the cervical opening, the medical staff pinches the second airbag 14 to squeeze out the gas in the second airbag 14 and delivers it to the first airbag 12 through the air delivery tube 13. After the first airbag 12 receives the gas, it will expand and continuously squeeze the inner wall of the cervical opening. Then the regulating valve 15 is turned to close the air delivery tube 13 to isolate the gas flow between the first airbag 12 and the second airbag 14, so that the first airbag 12 can remain in an expanded state to increase the stability of the occlusion device. At this time, a small amount of saline will flow out from the inner wall of the cervical opening, but it will be blocked by the suction cup 1 and cannot flow out of the cervix into the vagina. At this time, the injected saline will not flow out.

[0086] S5: Physiological saline is added into the uterine cavity through the hysteroscope access blocking tube 11, and the uterine cavity is examined using the hysteroscope 7.

[0087] S6: After the uterine cavity examination is completed, the regulating valve 15 is turned to open the air supply tube 13 to connect the first airbag 12 with the outside. After the connection, the excess air in the first airbag 12 will return to the second airbag 14 through the air supply tube 13, causing the first airbag 12 to shrink. At this time, the pressure at the cervix becomes smaller and is no longer blocked.

[0088] S7: The medical staff lifts the top plate 5 to allow air to enter between the suction cup 1 and the cervical opening through the air inlet pipe 4. After the air enters, the air pressure between the suction cup 1 and the cervical opening is consistent with the external air pressure, so that the suction cup 1 falls off from the outside of the cervical opening. At this time, the suction cup 1 is removed from the outside of the cervical opening, and the hysteroscope entry and exit blocking tube 11 and the first air bag 12 are taken out of the uterine cavity respectively.

[0089] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0090] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blocking device for generating cervical blocking pressure, characterized in that: It comprises a suction cup (1), the bottom of the suction cup (1) is in an outer arc shape, and the middle of the suction cup (1) is connected to a hysteroscope entry and exit blocking tube (11); The lower end of the hysteroscope access and blocking tube (11) is connected to a first air bag (12) at its outer side, both ends of the first air bag (12) are arc-shaped, the upper end of the first air bag (12) is connected to an air supply tube (13), the outer side of the air supply tube (13) is connected to the outer side of the hysteroscope access and blocking tube (11), one end of the air supply tube (13) away from the first air bag (12) passes through the suction cup (1) and is connected to the second air bag (14), and a regulating valve (15) is provided at a position of the air supply tube (13) close to the second air bag (14); The suction cup (1) is connected to a connecting tube (2) above, an insert tube (3) is inserted into the interior of the end of the connecting tube (2) away from the suction cup (1), the outer wall of the insert tube (3) is in contact with the inner wall of the connecting tube (2), the end of the insert tube (3) away from the connecting tube (2) is connected to a hose (31), and the end of the hose (31) away from the connecting tube (2) is connected to a vacuum pump (32); A pressure indicator (33) is connected above the vacuum pump (32).

2. The occlusion device for generating cervical occlusion pressure according to claim 1, characterized in that: The outside of the connecting pipe (2) is connected to the outside of the corresponding inserting tube (3) with symmetrically arranged positioning rods (34), the positioning rods (34) are L-shaped, and the front end of the positioning rods (34) is triangular; A fixing plate (35) is connected to the outside of the insert tube (3) at a position corresponding to the positioning rod (34); the fixing plate (35) is provided with symmetrically arranged through holes (36) at a position corresponding to the positioning rod (34); the front end of the positioning rod (34) passes through the through hole (36), and the front end of the positioning rod (34) is in contact with a side of the fixing plate (35) away from the outer suction cup (11); An annular plate (37) is connected to a position inside the connecting tube (2) corresponding to the inserting tube (3), and the inserting tube (3) is fitted with the annular plate (37).

3. The occlusion device for generating cervical occlusion pressure according to claim 2, characterized in that: The connecting pipe (2) is externally connected to an air intake pipe (4), the air intake pipe (4) is internally connected to a positioning plate (41), the upper surface of the positioning plate (41) is connected to symmetrically arranged connecting seats (42), a first connecting rod (43) is connected between the two connecting seats (42), the outer side of the first connecting rod (43) is rotatably connected to a cover plate (44), the outer side of the first connecting rod (43) is rotatably connected to a torsion spring (45), one end of the torsion spring (45) is connected to the cover plate (44), and the other end is connected to the positioning plate (41).

4. The occlusion device for generating cervical occlusion pressure according to claim 3, characterized in that: A top plate (5) is provided at the upper end of the air intake pipe (4), and a sealing ring (51) is connected to the opening of the air intake pipe (4) below the top plate (5).

5. The occlusion device for generating cervical occlusion pressure according to claim 4, characterized in that: The lower surface of the top plate (5) is connected to symmetrically arranged positioning seats (52), a second connecting rod (53) is connected between the two positioning seats (52), the second connecting rod (53) is externally sleeved with a collar (54), a pull rope (55) is connected below the collar (54), a fixing ring (56) is connected to the upper surface of the cover plate (44) at a position away from the torsion spring (45), and the upper part of the fixing ring (56) is connected to the pull rope (55).

6. The occluding device for generating cervical occluding pressure according to claim 5, characterized in that: The air inlet pipe (4) is externally connected to a symmetrically arranged outer shell (6), a slide plate (61) is slidably connected inside the outer shell (6), a third connecting rod (62) is connected between the slide plate (61) and the top plate (5), a spring (63) is connected between the slide plate (61) and the outer shell (6), and the third connecting rod (62) is located inside the spring (63).

7. A method for using a blocking device for generating cervical blocking pressure, applicable to the blocking device for generating cervical blocking pressure as claimed in any one of claims 1 to 6, characterized in that: The method of using the blocking device comprises the following steps: S1: inserting the hysteroscope access and blocking tube (11) into the uterine cavity, and inserting the first air bag (12) into the inner cavity of the cervical os; S2: The position of the suction cup (1) is finely adjusted to fit the outside of the cervical os. After fitting, the medical staff turns on the vacuum pump (32) to extract the air between the suction cup (1) and the cervical os. At this time, the air pressure between the suction cup (1) and the cervical os becomes lower and is lower than the external atmospheric pressure, forming an air pressure difference, so that the suction cup (1) can be adsorbed on the outside of the cervical os. After the suction cup (1) is adsorbed on the outside of the cervical os, it can also play a role in blocking the cervical os, preventing the flow of physiological saline from the cervical os; S3: In order to prevent the gas in the vagina from gradually entering the suction cup (1), causing the pressure difference between the suction cup (1) and the cervical opening to decrease, thus causing the suction cup (1) to fall off, the vacuum pump (32) needs to be in operation all the time to keep the pressure between the suction cup (1) and the cervix within a specified range; S4: After the suction cup (1) is attached to the outside of the cervical opening, the medical staff pinches the second air bag (14) to squeeze out the gas in the second air bag (14) and delivers the gas to the first air bag (12) through the air delivery tube (13). After receiving the gas, the first air bag (12) expands and continuously squeezes the inner wall of the cervical opening. Then, the regulating valve (15) is turned to close the air delivery tube (13) to isolate the gas flow between the first air bag (12) and the second air bag (14), so that the first air bag (12) can be kept in an expanded state to increase the stability of the blocking device. At this time, a small amount of saline will flow out from the inner wall of the cervical opening, but it will be blocked by the suction cup (1) and cannot flow out of the cervix into the vagina. At this time, the injected saline will not flow out; S5: adding physiological saline into the uterine cavity through the hysteroscope access blocking tube (11), and performing uterine cavity examination using hysteroscope; S6: After the uterine cavity examination is completed, the regulating valve (15) is turned to open the air supply tube (13), so that the first air bag (12) is connected to the outside. After the connection, the excess air in the first air bag (12) will return to the second air bag (14) through the air supply tube (13), so that the first air bag (12) will be reduced. At this time, the pressure at the cervix becomes smaller and is no longer blocked; S7: The medical staff lifts the top plate (5) to allow air to enter between the suction cup (1) and the cervical os through the air inlet pipe (4). After the air enters, the air pressure between the suction cup (1) and the cervical os is consistent with the external air pressure, so that the suction cup (1) falls off from the outside of the cervical os. At this time, the suction cup (1) is removed from the outside of the cervical os, and the hysteroscope access blocking tube (11) and the first air bag (12) are respectively removed from the uterine cavity.

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