Automatic constant pressure uterine distension device

Abstract

The present invention discloses an automatic constant-pressure uterine distension device, comprising a movable base and a support rod, wherein the support rod is fixedly mounted on the upper outer surface of the movable base, a fixing frame is movably mounted on one side of the support rod, a regulator is fixedly mounted on the side outer surface of the support rod, a plurality of groups of liquid bags are arranged below the fixing frame, and the liquid bags and the regulators are connected through an infusion tube; a steering gear and a lifting joint are movably mounted inside the regulator, the steering gear is movably mounted below the lifting joint, and the lifting joint and the regulator are movably connected through a rotating disk; a uterine distension tube is connected to the lower end of the regulator, and the regulator and the uterine distension tube are connected through a liquid storage sac; the use of the peristaltic pump is optimized so that it can quickly complete the zero-air intake switching operation of the uterine distension liquid bag, thereby improving the safety of the uterine distension device during use, reducing the risk of air embolism, and avoiding bending and blockage of the liquid inlet hose.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and more specifically relates to an automatic constant pressure uterine distension device. Background Art

[0002] A uterine expansion machine is a medical device used in gynecological surgery and examinations. It is mainly used to expand the uterine cavity to facilitate hysteroscopic examinations and surgeries. A liquid uterine expansion machine expands the uterine cavity by pumping liquid medium into the uterine cavity; a gas uterine expansion machine uses gas (such as CO2) as the expansion medium. In addition, there are other types of uterine expansion machines, such as uterine expansion pressurizers.

[0003] The prior art CN111184560A records an automatic constant-pressure pumpless gravity uterine distension device, including a lifting mechanism and a bracket for hanging a uterine distension fluid bag. The uterine distension fluid in the uterine distension fluid bag is transported to the water inlet of the hysteroscope sheath through an infusion tube, and then transported to the uterine cavity from the water inlet. A pressure sensor is provided on the infusion tube near the water inlet. The pressure sensor transmits the detected real-time pressure information of the uterine distension fluid to a controller. The controller controls the lifting mechanism to drive the bracket to lift and lower according to the real-time pressure information and the preset pressure information to keep the uterine distension fluid pressure in the uterine cavity constant. The delivery of the uterine distension fluid is achieved through the sensor, the infusion tube and the controller, avoiding the use of the existing pump-type uterine distension machine, which expands the uterus by gravity and has no active suction effect on the uterine distension fluid, avoiding gas embolism caused by active suction, and will not cause complications, thereby greatly improving the safety of the operation.

[0004] The above-mentioned pumpless gravity uterine distension device has certain shortcomings when in use. Although it adopts a pumpless structural design, it uses the self-gravity of the uterine distension fluid to distend the uterus, and the self-gravity of the uterine distension fluid is affected by the installation height of the uterine distension fluid bag. The floor height of a normal hospital cannot meet the height requirement of the uterine distension fluid bag during the uterine distension operation, and the uterine cavity cannot meet the expansion standard; secondly, when the uterine distension device is in use, the uterine distension fluid bag needs to be replaced. When the uterine distension fluid bag is replaced, gas is easily introduced when the connector is inserted, causing the gas to enter the pipeline and then enter the uterine cavity, causing serious complications and resulting in serious consequences; secondly, the above-mentioned uterine distension device does not have an auxiliary prompt function. When the uterine distension fluid bag is switched, manual observation is required, and the uterine distension fluid bag cannot be quickly switched in time, and the functionality is single. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic constant pressure uterine distension device that can solve the existing problems.

[0006] The problem to be solved by the present invention is:

[0007] 1. Although it adopts a pump-free structural design, it uses the weight of the uterine distension fluid to distend the uterus, and the weight of the uterine distension fluid is affected by the installation height of the uterine distension fluid bag. The floor height of a normal hospital cannot meet the height requirement of the uterine distension fluid bag during the uterine distension operation, and the uterine cavity cannot meet the expansion standard;

[0008] 2. Secondly, when the uterine distension device is used, the uterine distension bag needs to be replaced. When the uterine distension bag is replaced, gas is easily introduced into the pipe when the joint is inserted, and then the gas enters the uterine cavity, causing serious complications and serious consequences.

[0009] 3. Secondly, the above-mentioned uterine distension device does not have an auxiliary prompt function. When the uterine distension fluid bag is switched, manual observation is required, and the uterine distension fluid bag cannot be quickly switched in time, and the functionality is single.

[0010] The purpose of the present invention can be achieved through the following technical solutions:

[0011] An automatic constant-pressure uterine distension device comprises a movable base and a support rod, wherein the support rod is fixedly mounted on the outer surface of the upper end of the movable base, a fixed frame is movably mounted on one side of the support rod, a regulator is fixedly mounted on the outer surface of the side edge of the support rod, a plurality of groups of liquid bags are arranged below the fixed frame, and the liquid bags and the regulator are connected through an infusion tube; a steering gear and a lifting joint are movably mounted inside the regulator, the steering gear is movably mounted below the lifting joint, and the lifting joint and the regulator are movably connected through a rotating disk; a uterine distension tube is connected to the lower end of the regulator, and the regulator and the uterine distension tube are connected through a liquid storage bladder, a liquid inlet hose is arranged at the upper end of the liquid storage bladder, and the liquid inlet hose and the lifting joint are connected through a liquid guide tube, and the steering gear is sleeved on the outer surface of the liquid inlet hose.

[0012] As a further technical solution of the present invention, the outer surface of the liquid storage bladder is a corrugated structure, and the lower end of the liquid storage bladder is provided with a liquid outlet hose used in conjunction with the uterine distension tube. The uterine distension tube and the liquid outlet hose are fixed by a nut. By utilizing the setting of the liquid storage bladder, the uterine distension tube can be temporarily supplied with liquid when the regulator switches the liquid bag, thereby preventing air from entering the uterine distension tube.

[0013] As a further technical solution of the present invention, a lifting cap used in conjunction with a liquid guiding tube is fixedly installed at the lower end of the lifting joint, and the lifting cap is movably sleeved on the outer surface of one end of the liquid guiding tube, and a liquid inlet groove is distributed in an annular shape on the outer surface of one end of the liquid guiding tube, and a sealing ring is sleeved inside the lifting cap. When the regulator is in use, the user presses the elastic snap button so that the elastic snap button drives the lifting joint to move downward, so that the lifting joint is separated from a group of liquid storage soft bags. At this time, the liquid inlet groove of the liquid guiding tube is wrapped by the sealing ring of the lifting cap, so that the liquid inlet soft bags are One end of the tube is in a closed state to prevent air from entering the interior of the uterine expansion tube. The rotating disk is rotated to drive the lifting joint to rotate, and the lifting joint is transferred to the lower end of another group of liquid storage soft bags. The elastic snaps are released so that the elastic snaps are pushed out under the action of the springs, thereby causing the elastic snaps to drive the lifting joints to move upward, so that the lifting joints are inserted into the liquid outlet end of another group of liquid bags. At this time, the liquid inlet groove of the liquid guide tube is placed in the cavity of the lifting cap, so that one end of the liquid inlet hose is in an open state, so that the uterine expansion fluid in the other group of liquid storage soft bags can be transported to the uterine expansion tube.

[0014] As a further technical solution of the present invention, an elastic snap button for cooperating with the lifting joint is movably installed on the outer surface of the rotating disk, a screw cap is sleeved on the lower end of the elastic snap button, the screw cap and the rotating disk are fixedly connected, a spring is provided between the elastic snap button and the screw cap, the elastic snap button can be used to drive the lifting joint to move up and down, and the rotating disk can be used to rotate the elastic snap button to adjust the docking angle of the lifting joint.

[0015] As a further technical solution of the present invention, three groups of liquid pipe joints for use with liquid bags are fixedly installed on the inner side of the upper end of the regulator, and three groups of fixed hooks for use with liquid bags are fixedly installed on the lower end of the fixed frame. The user uses the fixed hooks to place three groups of liquid bags filled with uterine distension fluid on the lower end of the fixed frame, and uses an infusion tube to introduce the uterine distension fluid in the liquid bags into the regulator. By rotating the lifting joint, the docking position between the lifting joint and the three groups of liquid bags can be adjusted.

[0016] As a further technical solution of the present invention, a lifting sleeve is fixedly installed on one side of the fixed frame, and a gravity sensor is arranged at the bottom of the lifting sleeve. The lifting sleeve and the support rod are movably connected. The user transmits the total weight of the three groups of liquid bags to the controller. When the uterine distension fluid in one group of liquid bags is delivered, the gravity sensor determines the weight of the remaining liquid bags, and uses the controller to send an alarm to notify the user to use the regulator to switch the liquid bags.

[0017] As a further technical solution of the present invention, the steering gear includes two groups of guide wheels and several groups of fixed clamps, and the several groups of fixed clamps are vertically movably connected. The two groups of guide wheels are respectively arranged on both sides of the fixed clamps. The liquid inlet hose of the liquid storage soft bag is sleeved in the several groups of fixed clamps, and the liquid inlet hose and the fixed clamps are reinforced by colloid. The several groups of fixed clamps can be bent at a certain angle, so that the fixed clamps limit the bending angle of the liquid inlet hose and avoid bending and blockage of the liquid inlet hose.

[0018] As a further technical solution of the present invention, two groups of docking seats are provided on the upper part of the fixed clamping ring, and two groups of rotating caps are provided on the lower part of the fixed clamping ring. The docking seats and the rotating caps are movably docked. The docking seats and the rotating caps can be used to make several groups of fixed clamping rings in a state of movably docking groups, and the two groups of guide wheels play a role of movable limiting on both sides of the fixed clamping ring.

[0019] As a further technical solution of the present invention, a liquid outlet hose is fixedly installed in the middle of the lower end of the liquid storage bladder, and a controller is fixedly installed at the front end of the mobile base. The liquid storage bladder can be used to pre-store a portion of uterine distension fluid. When the regulator performs a closed switching operation, the corrugated liquid storage bladder contracts under the action of the peristaltic pump, so that the uterine distension fluid in the liquid storage bladder is discharged. After the regulator is switched, the liquid storage bladder expands outward, increasing the temporary negative pressure of the liquid inlet hose, so that the liquid storage bladder is filled with uterine distension fluid.

[0020] As a further technical solution of the present invention, a peristaltic pump is installed on one side of the mobile base, and a mobile frame is provided at the bottom of the mobile base.

[0021] Beneficial effects of the present invention:

[0022] By setting the settings of the regulator, when the automatic constant pressure uterine distension device is used, the use of the peristaltic pump is optimized so that the switching operation of the uterine distension fluid bag can be completed quickly, thereby improving the safety and stability of the uterine distension device when in use;

[0023] During operation, three groups of liquid bags containing uterine distension fluid are placed at the lower end of the fixed frame using fixed hooks, and the uterine distension fluid in the liquid bags is introduced into the regulator using an infusion tube. The docking position between the lifting joint and the three groups of liquid bags can be adjusted by rotating the lifting joint. When switching between the three groups of liquid bags, the user presses the elastic snap button to drive the lifting joint downward, so that the lifting joint is separated from a group of liquid storage soft bags. At this time, the liquid inlet groove of the liquid catheter is wrapped by the sealing ring of the lifting cap, so that one end of the liquid inlet hose is in a closed state, preventing air from entering the interior of the uterine distension tube, thereby effectively reducing the phenomenon of gas embolism, and rotating the rotating disk. , so that the rotating disk drives the lifting joint to rotate, and the lifting joint is turned to the lower end of another group of liquid storage soft bags, and the elastic snap is released, so that the elastic snap is pushed out under the action of the spring, so that the elastic snap drives the lifting joint to move upward, so that the lifting joint is inserted into the liquid outlet end of another group of liquid bags. At this time, the liquid inlet groove of the liquid guide tube is placed in the cavity of the lifting cap, so that one end of the liquid inlet hose is in an open state, so that the uterine distension fluid in the other group of liquid storage soft bags can be transported to the uterine distension tube, thereby quickly completing the air-free switching operation of the liquid bag, and the elastic snap can be used to drive the lifting joint to move up and down, and the rotating disk can be used to rotate the elastic snap to adjust the docking angle of the lifting joint.

[0024] By setting a steering gear, when the automatic constant pressure uterine distension device is used, the use of the regulator is optimized, and the bending and blocking of the liquid inlet hose is avoided when the regulator is performing the steering adjustment operation of the lifting joint, thereby improving the use effect of the automatic constant pressure uterine distension device;

[0025] When in use, the liquid inlet hose of the liquid storage soft bag is sleeved in several groups of fixed clamps, and the liquid inlet hose and the fixed clamps are reinforced by colloid so that the outer surface of the liquid hose is in close contact with the fixed clamps, and the several groups of fixed clamps can be put into a state of active docking groups by using a docking seat and a rotating clamp cap, so that the combined fixed clamps can be bent at a certain angle, and the two groups of guide wheels play a role of active limiting on both sides of the fixed clamps, and the several groups of fixed clamps can be bent at a certain angle. When the liquid inlet hose is bent under the action of the regulator, the fixed clamps are used to fix the outer wall of the liquid hose, so that the fixed clamps limit the bending angle of the liquid inlet hose and avoid bending and blockage of the liquid inlet hose.

[0026] By providing a liquid storage soft capsule and a gravity sensor, when the automatic constant pressure uterine distension device is used, it has a switching prompt function to improve safety, and at the same time, it has a temporary liquid injection function to improve its use effect;

[0027] During operation, the user transmits the total weight of the three groups of liquid bags to the controller. When the uterine distension fluid in one group of liquid bags is delivered, the gravity sensor determines the weight of the remaining liquid bags, and uses the controller to send an alarm to notify the user to use the regulator to switch the liquid bags. The liquid storage bladder can pre-store a portion of the uterine distension fluid. When the regulator performs a closed switching operation, the corrugated liquid storage bladder contracts under the action of the peristaltic pump, so that the uterine distension fluid in the liquid storage bladder is discharged. After the regulator is switched, the liquid storage bladder expands outward, increasing the temporary negative pressure of the liquid inlet hose, so that the liquid storage bladder is filled with uterine distension fluid, reducing the risk of air embolism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 It is a schematic diagram of the overall structure of the automatic constant pressure uterine expansion device of the present invention;

[0030] Figure 2 It is a planar structural diagram of a regulator in the automatic constant pressure uterine distension device of the present invention;

[0031] Figure 3 It is a side view of a regulator in the automatic constant pressure uterine distension device of the present invention;

[0032] Figure 4 It is an overall structural diagram of the elastic snaps in the automatic constant pressure uterine expansion device of the present invention;

[0033] Figure 5 It is an overall structural diagram of the fixing frame in the automatic constant pressure uterine expansion device of the present invention;

[0034] Figure 6 It is the overall structural diagram of the steering device in the automatic constant pressure uterine expansion device of the present invention;

[0035] Figure 7 It is an overall structural diagram of the liquid storage soft bag in the automatic constant pressure uterine distension device of the present invention.

[0036] In the figure: 1. Mobile base; 2. Support rod; 3. Peristaltic pump; 4. Uterine distension tube; 5. Regulator; 6. Infusion tube; 7. Liquid bag; 8. Fixed frame; 9. Liquid storage bladder; 10. Controller; 11. Steering gear; 12. Liquid outlet hose; 13. Rotating disk; 14. Lifting joint; 15. Liquid pipe joint; 16. Lifting cap; 17. Liquid inlet tank; 18. Liquid guide tube; 19. Liquid inlet hose; 20. Rotary cap; 21. Elastic snap button; 22. Fixed hook; 23. Lifting sleeve; 24. Gravity sensor; 25. Guide wheel; 26. Rotating cap; 27. Docking seat; 28. Fixed clamp ring. DETAILED DESCRIPTION

[0037] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0038] like Figure 1-7 As shown, the automatic constant pressure uterine distension device comprises a movable base 1 and a support rod 2, the support rod 2 is fixedly mounted on the upper outer surface of the movable base 1, a fixing frame 8 is movably mounted on one side of the support rod 2, a regulator 5 is fixedly mounted on the side outer surface of the support rod 2, a plurality of groups of liquid bags 7 are arranged below the fixing frame 8, and the liquid bags 7 and the regulator 5 are connected through an infusion tube 6; a steering gear 11 and a lifting joint 14 are movably mounted inside the regulator 5, the steering gear 11 is movably mounted below the lifting joint 14, and the lifting joint 14 and the regulator 5 are movably connected through a rotating disk 13; a uterine distension tube 4 is connected to the lower end of the regulator 5, and the regulator 5 and the uterine distension tube 4 are connected through a liquid storage soft capsule 9, a liquid inlet hose 19 is arranged at the upper end of the liquid storage soft capsule 9, and the liquid inlet hose 19 and the lifting joint 14 are connected through a liquid guide tube 18, and the steering gear 11 is sleeved on the outer surface of the liquid inlet hose 19.

[0039] The outer surface of the liquid storage bladder 9 is a corrugated structure. The lower end of the liquid storage bladder 9 is provided with a liquid outlet hose 12 used in conjunction with the uterine distension tube 4. The uterine distension tube 4 and the liquid outlet hose 12 are fixed by a nut. By utilizing the setting of the liquid storage bladder 9, when the regulator 5 performs the switching operation of the liquid bag 7, the uterine distension tube 4 can be temporarily supplied with liquid to prevent air from entering the uterine distension tube 4.

[0040] The lower end of the lifting joint 14 is fixedly installed with a lifting cap 16 used in conjunction with the liquid guide tube 18. The lifting cap 16 is movably sleeved on the outer surface of one end of the liquid guide tube 18. The outer surface of one end of the liquid guide tube 18 is annularly provided with a liquid inlet groove 17. The inner sleeve of the lifting cap 16 is sleeved with a sealing ring. When the regulator 5 is used, the user presses the elastic snap button 21 to drive the lifting joint 14 downward, so that the lifting joint 14 is separated from a group of liquid storage soft capsules 9. At this time, the liquid inlet groove 17 of the liquid guide tube 18 is wrapped by the sealing ring of the lifting cap 16, so that one end of the liquid inlet hose 19 is sealed. state to prevent air from entering the interior of the uterine distension tube 4, rotate the rotating disk 13, so that the rotating disk 13 drives the lifting joint 14 to rotate, and transfer the lifting joint 14 to the lower end of another group of liquid storage soft capsules 9, loosen the elastic snap button 21, so that the elastic snap button 21 is pushed out under the action of the spring, so that the elastic snap button 21 drives the lifting joint 14 to move upward, so that the lifting joint 14 is inserted into the liquid outlet end of another group of liquid bags 7. At this time, the liquid inlet groove 17 of the liquid guide tube 18 is placed in the cavity of the lifting cap 16, so that one end of the liquid inlet hose 19 is in an open state, so that the uterine distension fluid in the other group of liquid storage soft capsules 9 can be transported to the uterine distension tube 4.

[0041] An elastic snap button 21 for cooperating with the lifting joint 14 is movably installed on the outer surface of the rotating disk 13. A screw cap 20 is sleeved on the lower end of the elastic snap button 21. The screw cap 20 and the rotating disk 13 are fixedly connected. A spring is provided between the elastic snap button 21 and the screw cap 20. The elastic snap button 21 can be used to drive the lifting joint 14 to move up and down. The rotating disk 13 is used to rotate the elastic snap button 21 to adjust the docking angle of the lifting joint 14.

[0042] Three groups of liquid pipe joints 15 for use with the liquid bags 7 are fixedly installed on the inner side of the upper end of the regulator 5, and three groups of fixed hooks 22 for use with the liquid bags 7 are fixedly installed on the lower end of the fixed frame 8. The user uses the fixed hooks 22 to place the three groups of liquid bags 7 filled with uterine distension fluid at the lower end of the fixed frame 8, and uses the infusion tube 6 to introduce the uterine distension fluid in the liquid bags 7 into the regulator 5. By rotating the lifting joint 14, the docking position between the lifting joint 14 and the three groups of liquid bags 7 can be adjusted.

[0043] A lifting sleeve 23 is fixedly installed on one side of the fixing frame 8, and a gravity sensor 24 is arranged at the bottom of the lifting sleeve 23. The lifting sleeve 23 and the supporting rod 2 are movably connected. The user transmits the total weight of the three groups of fluid bags 7 to the controller 10. When the uterine distension fluid in one group of fluid bags 7 is delivered, the gravity sensor 24 determines the weight of the remaining fluid bags 7, and uses the controller 10 to send an alarm to notify the user to use the regulator 5 to switch the fluid bags 7.

[0044] The steering gear 11 includes two groups of guide wheels 25 and several groups of fixed clamps 28. The several groups of fixed clamps 28 are vertically movably connected to each other. The two groups of guide wheels 25 are respectively arranged on both sides of the fixed clamps 28. The liquid inlet hose 19 of the liquid storage soft bag 9 is sleeved in the several groups of fixed clamps 28. The liquid inlet hose 19 and the fixed clamps 28 are reinforced by colloid. The several groups of fixed clamps 28 can be bent at a certain angle, so that the fixed clamps 28 limit the bending angle of the liquid inlet hose 19 and avoid bending and blocking of the liquid inlet hose 19.

[0045] Two groups of docking seats 27 are provided on the upper part of the fixed snap ring 28, and two groups of rotating caps 26 are provided on the lower part of the fixed snap ring 28. The docking seats 27 and the rotating caps 26 are movably docked. The docking seats 27 and the rotating caps 26 can be used to make several groups of fixed snap rings 28 in a state of movably docking groups, and the two groups of guide wheels 25 play a role of movable limiting on both sides of the fixed snap ring 28.

[0046] A liquid outlet hose 12 is fixedly installed at the middle of the lower end of the liquid storage bladder 9, and a controller 10 is fixedly installed at the front end of the mobile base 1. The liquid storage bladder 9 can be used to pre-store a portion of uterine distension fluid. When the regulator 5 performs a closed switching operation, the corrugated liquid storage bladder 9 contracts under the action of the peristaltic pump 3, so that the uterine distension fluid in the liquid storage bladder 9 is discharged. After the regulator 5 is switched, the liquid storage bladder 9 expands outward, increasing the temporary negative pressure of the liquid inlet hose 19, so that the liquid storage bladder 9 is filled with uterine distension fluid.

[0047] A peristaltic pump 3 is installed on one side of the mobile base 1 , and a mobile frame is provided at the bottom of the mobile base 1 .

[0048] When in use, by setting the settings of the regulator 5, when the automatic constant pressure uterine inflation device is used, the use of the peristaltic pump 3 is optimized, so that it can quickly complete the switching operation of the uterine inflation fluid bag 7, thereby improving the safety and stability of the uterine inflation device when in use;

[0049] During operation, the three groups of liquid bags 7 containing uterine distension fluid are placed at the lower end of the fixed frame 8 by using the fixed hook 22, and the uterine distension fluid in the liquid bag 7 is introduced into the regulator 5 by using the infusion tube 6. By rotating the lifting joint 14, the docking position between the lifting joint 14 and the three groups of liquid bags 7 can be adjusted. When switching between the three groups of liquid bags 7, the user presses the elastic snap button 21 so that the elastic snap button 21 drives the lifting joint 14 to move downward, so that the lifting joint 14 is separated from a group of liquid storage soft capsules 9. At this time, the liquid inlet groove 17 of the liquid guide tube 18 is wrapped by the sealing ring of the lifting cap 16, so that one end of the liquid inlet hose 19 is in a closed state, preventing air from entering the interior of the uterine distension tube 4, thereby effectively reducing the gas embolism phenomenon, and rotating the rotating disk 13 so that The rotating disk 13 drives the lifting joint 14 to rotate, and the lifting joint 14 is transferred to the lower end of another group of liquid storage soft capsules 9, and the elastic snap button 21 is released, so that the elastic snap button 21 is pushed out under the action of the spring, so that the elastic snap button 21 drives the lifting joint 14 to move upward, so that the lifting joint 14 is inserted into the liquid outlet end of another group of liquid bags 7. At this time, the liquid inlet groove 17 of the liquid guide tube 18 is placed in the cavity of the lifting cap 16, so that one end of the liquid inlet hose 19 is in an open state, so that the uterine distension fluid in another group of liquid storage soft capsules 9 can be transported to the uterine distension tube 4, thereby quickly completing the air-free switching operation of the liquid bag 7. The elastic snap button 21 can be used to drive the lifting joint 14 to move up and down, and the rotating disk 13 can be used to rotate the elastic snap button 21 to adjust the docking angle of the lifting joint 14;

[0050] By setting the steering gear 11, when the automatic constant pressure uterine distension device is used, the use of the regulator 5 is optimized, and the bending and blocking phenomenon of the liquid inlet hose 19 is avoided when the regulator 5 performs the steering adjustment operation of the lifting joint 14, thereby improving the use effect of the automatic constant pressure uterine distension device;

[0051] When in use, the liquid inlet hose 19 of the liquid storage soft capsule 9 is sleeved in a plurality of groups of fixed clamp rings 28, and the liquid inlet hose 19 and the fixed clamp ring 28 are reinforced by colloid, so that the outer surface of the liquid hose is in close contact with the fixed clamp ring 28, and the docking clamp seat 27 and the rotating clamp cap 26 can be used to make the plurality of groups of fixed clamp rings 28 in a movable docking group state, so that the combined fixed clamp rings 28 can be bent at a certain angle, and the two groups of guide wheels 25 play a movable limiting role on both sides of the fixed clamp ring 28, and the plurality of groups of fixed clamp rings 28 can be bent at a certain angle. When the liquid inlet hose 19 is bent under the action of the regulator 5, the outer wall of the liquid hose is fixed by the fixed clamp ring 28, so that the fixed clamp ring 28 limits the bending angle of the liquid inlet hose 19, and avoids the bending and blocking phenomenon of the liquid inlet hose 19;

[0052] By providing the liquid storage soft capsule 9 and the gravity sensor 24, when the automatic constant pressure uterine distension device is used, it has a switching prompt function to improve safety, and at the same time, it has a temporary liquid injection function to improve its use effect;

[0053] During operation, the user transmits the total weight of the three groups of liquid bags 7 to the controller 10. When the delivery of the uterine distension fluid in one group of liquid bags 7 is completed, the gravity sensor 24 determines the weight of the remaining liquid bags 7, and uses the controller 10 to send an alarm to notify the user to use the regulator 5 to switch the liquid bags 7. The liquid storage bladder 9 can be used to pre-store a portion of the uterine distension fluid. When the regulator 5 performs a closed switching operation, the corrugated liquid storage bladder 9 contracts under the action of the peristaltic pump 3, so that the uterine distension fluid in the liquid storage bladder 9 is discharged. After the regulator 5 is switched, the liquid storage bladder 9 expands outward, increasing the temporary negative pressure of the liquid inlet hose 19, so that the liquid storage bladder 9 is filled with uterine distension fluid, reducing the risk of air embolism.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. Automatic constant pressure uterine distension device, characterized in that: The invention comprises a mobile base (1) and a support rod (2), wherein the support rod (2) is fixedly mounted on the upper outer surface of the mobile base (1), a fixing frame (8) is movably mounted on one side of the support rod (2), a regulator (5) is fixedly mounted on the side outer surface of the support rod (2), a plurality of groups of liquid bags (7) are arranged below the fixing frame (8), and the liquid bags (7) and the regulator (5) are connected through a liquid infusion tube (6); a steering gear (11) and a lifting joint (14) are movably mounted inside the regulator (5), and the steering gear ( 11) is movably mounted below the lifting joint (14), and the lifting joint (14) and the regulator (5) are movably connected via a rotating disk (13); the lower end of the regulator (5) is connected to a uterine distension tube (4), and the regulator (5) and the uterine distension tube (4) are connected via a liquid storage soft bag (9); the upper end of the liquid storage soft bag (9) is provided with a liquid inlet hose (19), and the liquid inlet hose (19) and the lifting joint (14) are connected via a liquid guide tube (18), and the steering gear (11) is sleeved on the outer surface of the liquid inlet hose (19); A lifting cap (16) for use with a liquid guiding tube (18) is fixedly mounted at the lower end of the lifting joint (14); the lifting cap (16) is movably sleeved on the outer surface of one end of the liquid guiding tube (18); a liquid inlet groove (17) is distributed in an annular shape on the outer surface of one end of the liquid guiding tube (18); and a sealing ring is sleeved inside the lifting cap (16); An elastic snap button (21) for use with the lifting joint (14) is movably mounted on the outer surface of the rotating disk (13); a screw cap (20) is sleeved on the lower end of the elastic snap button (21); the screw cap (20) and the rotating disk (13) are fixedly connected; and a spring is provided between the elastic snap button (21) and the screw cap (20).

2. The automatic constant pressure uterine distension device according to claim 1, characterized in that: The outer surface of the liquid storage soft bladder (9) is in a corrugated structure, and a liquid discharge hose (12) for use with the uterine expansion tube (4) is provided at the lower end of the liquid storage soft bladder (9), and the uterine expansion tube (4) and the liquid discharge hose (12) are fixed by a nut.

3. The automatic constant pressure uterine distension device according to claim 1, characterized in that: Three groups of liquid pipe joints (15) for use with the liquid bag (7) are fixedly mounted on the inner side of the upper end of the regulator (5), and three groups of fixed hooks (22) for use with the liquid bag (7) are fixedly mounted on the lower end of the fixing frame (8).

4. The automatic constant pressure uterine distension device according to claim 1, characterized in that: A lifting sleeve (23) is fixedly mounted on one side of the fixing frame (8), and a gravity sensor (24) is provided at the bottom of the lifting sleeve (23), and the lifting sleeve (23) and the supporting rod (2) are movably connected.

5. The automatic constant pressure uterine distension device according to claim 1, characterized in that: The steering gear (11) comprises two groups of guide wheels (25) and a plurality of groups of fixed snap rings (28), wherein the plurality of groups of fixed snap rings (28) are vertically movably connected to each other, and the two groups of guide wheels (25) are respectively arranged on both sides of the fixed snap rings (28).

6. The automatic constant pressure uterine distension device according to claim 5, characterized in that: Two groups of docking seats (27) are provided on the upper part of the fixed clamp ring (28), and two groups of rotating clamp caps (26) are provided on the lower part of the fixed clamp ring (28). The docking seats (27) and the rotating clamp caps (26) are movably docked.

7. The automatic constant pressure uterine distension device according to claim 1, characterized in that: A liquid outlet hose (12) is fixedly mounted at the middle of the lower end of the liquid storage soft capsule (9), and a controller (10) is fixedly mounted at the front end of the mobile base (1).

8. The automatic constant pressure uterine distension device according to claim 1, characterized in that: A peristaltic pump (3) is installed on one side of the mobile base (1), and a mobile frame is provided at the bottom of the mobile base (1).

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