Cervical orifice plugging device capable of preventing tumor diffusion

Abstract

The invention discloses a tumor diffusion prevention type cervical orifice plugging device which comprises a main sleeve, the initial end of the main sleeve is connected with an imbedding shaft, a through hole allowing an external endoscope to penetrate through is axially formed between the imbedding shaft and the main sleeve in a penetrating mode, and the imbedding shaft is provided with an expansion structure used for expanding an external cervical orifice after the imbedding shaft is imbedded into the external cervical orifice of a patient. The main sleeve is provided with a sealing piece used for being in linkage fit with the imbedding shaft so as to clamp and limit external tissue of the cervical external opening of a patient, and the sealing piece is in linkage fit with the imbedding shaft so as to extrude and seal a gap between the inner peripheral wall of the cervical external opening and the outer peripheral wall of the imbedding shaft. And a fixing assembly for stably fixing the main sleeve in the vagina of an external patient is detachably arranged on the main sleeve. The problems that a traditional uterus operation device is difficult to synchronously achieve expansion of a cervical external opening, gap sealing of the inner peripheral wall of the cervical external opening and the outer peripheral wall of an instrument and stable fixing of the device in the vagina, liquid overflows easily in the operation, and then tumor diffusion is caused are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a tumor diffusion prevention type cervical orifice plugging device. BACKGROUND

[0002] In hysteroscopic uterine tumor surgery (such as endometrial cancer, cervical cancer, etc.), an endoscope needs to be placed through the external cervical orifice for operation, while the risk of tumor cell implantation and metastasis caused by perfusion liquid overflow needs to be avoided.

[0003] At present, in traditional uterine surgery, the external cervical orifice expansion, gap sealing and device fixation of the patient are mostly dependent on independent instrument step-by-step operation, which has significant technical defects: firstly, the traditional expansion device (such as cervical dilator) needs to be placed into the external cervical orifice first, expanded and then taken out before the endoscope is placed in, and if other surgical instruments (such as forceps, electrocision ring, etc.) need to be placed in additionally after the endoscope is placed in, the external cervical orifice needs to be expanded again, which is complicated and easy to cause cervical canal mucosa injury, and cannot be coordinated with the subsequent sealing step; secondly, sealing is mostly achieved by using cervical clamp or simple sealing cap, which can only mechanically compress the outside of the external cervical orifice, and is difficult to adapt to the irregular shape of the cervical canal after expansion, which is easy to form a gap between the inner wall of the external cervical orifice and the outer wall of the endoscope or other medical devices, causing the perfusion liquid containing tumor cells to overflow into the vagina, increasing the risk of tumor diffusion; thirdly, the device fixation lacks reliable structure, mostly relying on the support of the doctor's hand or vaginal speculum, which has poor stability, and the displacement of the instrument during the operation easily destroys the sealing effect, further aggravating the overflow risk. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a tumor diffusion prevention type cervical orifice plugging device to solve the problem that the traditional uterine surgery device cannot simultaneously achieve external cervical orifice expansion, gap sealing between the inner wall of the external cervical orifice and the outer wall of the instrument, and stable fixation of the device in the vagina, which easily causes liquid overflow during the operation and further causes tumor diffusion.

[0005] To achieve the above-mentioned purpose, the present application provides a tumor diffusion prevention type cervical orifice plugging device, which comprises a main sleeve for being placed into the vagina of an external patient, a placement shaft coaxially connected to the beginning end of the main sleeve for being placed into the external cervical orifice of the patient, a through hole axially penetrating between the placement shaft and the main sleeve for the endoscope to be placed in, an expansion structure provided on the placement shaft for expanding the external cervical orifice after the placement shaft is placed into the external cervical orifice of the patient, a sealing member provided on the main sleeve for being in linkage with the placement shaft to clamp and limit the external tissue of the external cervical orifice of the patient, the sealing member being in linkage with the placement shaft to extrude and seal the gap between the inner wall of the external cervical orifice and the outer wall of the placement shaft, and a fixing assembly detachably provided on the main sleeve for stably fixing the main sleeve inside the vagina of the external patient.

[0006] The technical scheme has the beneficial effects that: the main sleeve can be stably inserted into the vagina of the patient, providing a basic support for the whole device, and the insertion shaft is coaxially connected with the main sleeve and is adapted to the external os of the cervix, ensuring the precise docking of the device and the cervix, wherein the perforated shaft penetrates the insertion shaft and the main sleeve in the axial direction, providing a stable operation channel for the endoscope to be inserted, avoiding the displacement of the endoscope affecting the operation; the expansion structure can expand the external os of the cervix after the insertion of the insertion shaft, without the need for separate expansion instruments, simplifying the operation steps and reducing the damage to the cervical tissue, so that the expansion can be quickly performed when additional instruments need to be inserted during the operation; the sealing element is linked with the insertion shaft, which can clamp and limit the external tissue of the external os of the cervix, and can also extrude the gap between the inner circumferential wall of the external os of the cervix and the outer circumferential wall of the insertion shaft to block the liquid overflow path; and the detachable fixing assembly can stably fix the main sleeve in the vagina, preventing the device from being displaced and damaging the seal during the operation, and the expansion of the external os of the cervix, the gap sealing and the fixation of the device are simultaneously completed, effectively preventing the overflow of liquid containing tumor cells, reducing the risk of tumor spread, and improving the safety and convenience of the operation.

[0007] The application further provides that: a first slot is annularly formed on the outer circumferential wall of the insertion shaft, the expansion structure comprises an expansion balloon arranged in the first slot, a first gas passage hole is arranged in the first slot, a first air inlet pipe is arranged in the first gas passage hole, the first air inlet pipe is in communication with the expansion balloon at the initial end, and the first air inlet pipe is provided with a first air inlet end for being penetrated out of the patient's body and being linked with an external inflation device to transport gas to the first air inlet pipe when the external inflation device is operated, so that the expansion balloon is inflated by the gas; the expansion balloon is in a flat state in an un-inflated state and is arranged in the first slot; the expansion balloon is in a circular ring shape in a maximum inflated state and the outer circumferential wall surface of the expansion balloon is an expansion surface for abutting against the inner circumferential wall of the external os of the cervix; and the insertion shaft and the main sleeve are detachably connected.

[0008] The technical scheme has the beneficial effects that: the first slot is formed on the outer circumferential wall of the insertion shaft, which can accommodate the expansion balloon in a flat state in an un-inflated state, avoiding the balloon scratching the cervical tissue during the insertion process and reducing the damage; the first air inlet pipe in the first gas passage hole communicates the expansion balloon with the external inflation device, which can accurately control the inflation and deflation of the balloon and ensure the stable inflation of the balloon; the expansion balloon is in a circular ring shape after inflation, and the expansion surface of the outer circumferential wall can uniformly abut against the inner circumferential wall of the external os of the cervix, achieving gentle and uniform expansion of the external os of the cervix and avoiding local over-expansion causing tissue tearing; the insertion shaft and the main sleeve are detachably connected, which facilitates the replacement of the insertion shaft adapted to the size of the patient's cervix, enhances the universality of the device, and at the same time, the inflated balloon can maintain the shape of the cervical canal, laying a foundation for the sealing operation of the sealing element and improving the stability of the sealing effect. The insertion shaft and the main sleeve can be detachably connected by a threaded connection, which facilitates quick replacement and subsequent disinfection operation.

[0009] The application further provides that: the top wall of the main sleeve is provided with a container groove in the circumferential direction, the sealing element includes a locking spring plate movably arranged in the container groove, the locking spring plate is arranged in a spiral line, the initial end of the locking spring plate is arranged close to the insertion shaft direction, the radial cross-sectional diameter of the initial end of the locking spring plate is larger than the radial cross-sectional diameter of the terminal end of the locking spring plate, and the radial cross-sectional diameter of the locking spring plate gradually decreases from the initial end to the terminal end, the main sleeve is provided with a movable hole for communicating with the container groove, a movable shaft is movably arranged in the movable hole, the terminal end of the locking spring plate is connected with a movable plate, the movable plate is arranged in connection with the movable shaft, and the movable shaft is movably arranged in the movable hole along the axis direction of the main sleeve to drive the initial end of the locking spring plate to protrude out of or retract into the container groove when the movable shaft moves, and the inner peripheral wall surface of the locking spring plate is a locking surface for abutting against the outer peripheral wall of the external tissue of the external orifice of the uterine cervix.

[0010] The above technical solution has the advantages that: the container groove is arranged on the top wall of the main sleeve to provide a storage space for the locking spring plate, the spring plate is retracted into the container groove when not in use, and the device can be inserted into the vagina and the uterine cervix without affecting the device; the initial end of the spiral locking spring plate has a larger diameter than the terminal end, and the diameter gradually changes, so that the locking spring plate can adapt to the contour of the external tissue of the external orifice of the uterine cervix after protruding out of the container groove, the locking surface tightly abuts against the tissue to achieve clamping and limiting, and the tissue is prevented from shifting; the two movable holes are used for the movement of the movable shaft, the movable shaft is connected with the movable plate and the locking spring plate, the spring plate can be controlled to protrude out of or retract into the container groove by driving the spring plate through the movable shaft, the operation is convenient, no additional instruments are needed to assist in clamping, and medical personnel can operate conveniently; the movable plate ensures the stable linkage between the spring plate and the movable shaft, prevents the spring plate from falling off, the overall structure realizes the precise linkage between the sealing element and the insertion shaft, the external tissue of the external orifice of the uterine cervix is clamped and limited quickly after expansion in cooperation with the insertion shaft or the expansion balloon, a stable premise is provided for the gap sealing, and the operation steps of the surgery are reduced.

[0011] The application further provides that: the locking surface of the locking spring plate is connected with an elastic air cushion, the elastic air cushion is arranged in a spiral line, the elastic air cushion is hollow and provided with an air inlet cavity, a second air inlet pipe is arranged on the movable plate, the initial end of the second air inlet pipe is in communication with the air inlet cavity, and the terminal end of the second air inlet pipe is a second air inlet end for protruding out of the patient's body and cooperating with an external inflation device to transport gas to the second air inlet pipe when the external inflation device operates, so that the elastic air cushion is inflated and expanded; the elastic air cushion is arranged in a flat state in the un-inflated state and is arranged on the locking surface of the locking spring plate; and the elastic air cushion is arranged in a spiral strip shape in the maximum inflated and expanded state, and the outer wall surface thereof is a limiting surface for abutting against the outer peripheral wall of the external tissue of the external orifice of the uterine cervix.

[0012] The technical scheme has the beneficial effects that: in the above technology, the locking surface of the elastic air cushion is flat when not inflated, which does not affect the stretching and clamping action of the spring piece; after inflation, the elastic air cushion is in a spiral strip shape, the limiting surface can tightly abut against the external tissue of the external os of the cervix, fills the irregular gap on the surface of the tissue, enhances the clamping sealing performance, and further blocks the liquid overflow path; the air inlet cavity provides inflation space for the air cushion, ensures uniform inflation of the air cushion, and avoids sealing leaks caused by uneven local inflation; the second air inlet pipe connects the air inlet cavity and the external inflation equipment, which can flexibly control the inflation and deflation of the air cushion and adapt to different tissue thicknesses; the elastic property of the above-mentioned elastic air cushion can buffer the pressure of the instrument operation on the cervical tissue, avoid tissue damage caused by excessive pressure, and improve the clamping stability and reduce the risk of affecting the sealing effect caused by tissue loosening during the operation.

[0013] The application further provides that the movable piece bottom wall is connected with two reset springs, the two reset springs are oppositely arranged, and both of the two reset springs are connected with the bottom wall of the container groove.

[0014] The technical scheme has the beneficial effects that: in the above technology, the two oppositely arranged reset springs connect the movable piece and the bottom wall of the container groove, and are sleeved on the outer peripheral wall of the movable shaft, which can ensure the stability of the stretching direction of the spring and avoid the deviation of the spring; when the movable shaft drives the movable piece to move, the reset spring can store energy, and when the locking spring needs to be recovered, the reset spring can automatically drive the spring to retract into the container groove or make the locking spring stable in the container groove, so as to avoid the locking spring accidentally exposed from the container groove affecting the operation process, and manual operation of the spring recovery is not needed, which simplifies the steps of taking out the instrument; the elastic force of the reset spring can keep the locking spring from clamping the tissue with excessive pressure, prevent the locking spring from loosening due to external force during the operation, maintain the clamping stability, ensure the sealing effect of the sealing element, reduce the adjustment frequency during the operation, and improve the operation efficiency.

[0015] The application further provides that the outer peripheral wall of the movable shaft is threadedly connected with the inner peripheral wall of the movable hole.

[0016] The technical scheme has the beneficial effects that: in the above technology, the outer peripheral wall of the movable shaft is threadedly connected with the inner peripheral wall of the movable hole, the accurate displacement adjustment of the shaft along the movable hole can be realized by rotating the movable shaft, the extension length and clamping pressure of the locking spring can be accurately controlled according to the thickness of the external tissue of the external os of the cervix, clamping instability or sealing failure caused by displacement deviation can be avoided, the thread structure has self-locking property, the movable shaft can be prevented from loosening due to external factors such as instrument operation and change of the body position of the patient during the operation, the position of the locking spring is stable, the clamping and sealing effects are maintained, different cervical tissue conditions of different patients can be adapted, tissue damage caused by improper clamping pressure is reduced, the safety and convenience of the device are improved, and the operation risk is reduced.

[0017] The application further provides that the movable shaft is provided with a clamping ring composed of a left clamping piece and a right clamping piece, the left clamping piece and the right clamping piece are both provided in a circular arc shape in radial section, the left clamping piece and the right clamping piece are oppositely arranged and combined to form a guide hole for the external endoscope to pass through and gap-fit with the peripheral wall of the external endoscope, the left clamping piece is connected with the movable shaft, and the end of the left clamping piece is movably connected with the end of the right clamping piece and connected with a swing hinge.

[0018] The above technical solution has the advantages that: in the above technology, the clamping ring is combined by the left clamping piece and the right clamping piece through the swing hinge, which is convenient for opening and closing to place the endoscope, adapts to endoscopes of different diameters, and enhances the versatility of the device; the guide hole is provided for the endoscope to pass through and gap-fit with the peripheral wall of the endoscope, which plays a positioning and guiding role on the endoscope, avoids the endoscope from shaking and touching the cervical tissue or the inner wall of the device, and reduces the damage of the endoscope and the scratch of the tissue; the left clamping piece is connected with the movable shaft, so that the clamping ring moves synchronously with the movable shaft, guarantees the coaxiality of the endoscope and the perforation, reduces the friction between the endoscope and the inner wall of the perforation, and improves the smoothness of the endoscope operation; the swing hinge guarantees the flexible opening and closing of the clamping piece, facilitates the quick placement and removal of the endoscope, provides stable support for the endoscope as a whole, avoids the displacement of the endoscope affecting the operation, and reduces the interference of the endoscope on the sealing structure.

[0019] The application further provides that the inner peripheral wall of the guide hole is circumferentially and uniformly provided with a plurality of through holes, each of the through holes is movably provided with a ball for contacting the peripheral wall of the external endoscope, and the diameter of the ball is greater than the diameter of the opening of the through hole.

[0020] The above technical solution has the advantages that: in the above technology, the plurality of balls are circumferentially and uniformly distributed in the guide hole and contact the peripheral wall of the endoscope, which converts the sliding friction of the endoscope and the guide hole into rolling friction, greatly reduces the moving resistance of the endoscope, facilitates the entry and exit of the endoscope and the adjustment of the position, and improves the convenience of the operation; the diameter of the ball is greater than the diameter of the opening of the through hole, which can prevent the ball from falling off from the through hole, guarantee the safety of use, and avoid the risk caused by the ball falling into the body; the uniform distribution of the balls makes the stress of the endoscope balanced, avoids the local friction from causing damage to the surface of the endoscope or scratch of the cervical tissue, and prolongs the service life of the endoscope; the stability of the rolling friction can reduce the shaking of the endoscope, guarantee the clear surgical field, improve the operation accuracy, further maintain the coaxiality of the endoscope and the perforation, and avoid the destruction of the sealing gap caused by the deviation of the endoscope.

[0021] The application further provides that the fixing assembly comprises a mounting sleeve, the mounting sleeve is sleeved on the main sleeve and is in threaded connection with the main sleeve, a plurality of fixing grooves are annularly formed on the outer circumferential wall of the mounting sleeve, the fixing assembly further comprises a plurality of fixing air bags, the plurality of fixing air bags are in one-to-one correspondence with the plurality of fixing grooves and are in detachable connection, a second air path hole is arranged on the mounting sleeve, the second air path hole is in communication with each fixing groove and the second air path hole is communicated to the outlet formed on the bottom wall of the mounting sleeve, a third air inlet pipe is arranged in the outlet, a plurality of branch pipes are communicated to the initial end of the third air inlet pipe, the plurality of branch pipes are in one-to-one correspondence with the plurality of fixing grooves, and each branch pipe is in communication with the adjacent fixing air bag, the terminal end of the third air inlet pipe is a third air inlet end for penetrating out of the patient's body and cooperating with the external inflation equipment to transport gas to the third air inlet pipe when the external inflation equipment is running, so that the fixing air bag is inflated, the fixing air bag is in a flat state in the inflation state and is arranged in the fixing groove, and the fixing air bag is in a circular ring state in the maximum inflation state and the outer circumferential wall surface of the fixing air bag is a fixing surface for abutting against the inner circumferential wall of the patient's vagina.

[0022] The above technical solution has the advantages that the mounting sleeve is in threaded connection with the main sleeve, which facilitates installation, disassembly, position adjustment, position adjustment of the fixing assembly according to the depth of the vagina, and enhancement of fixing stability; the fixing groove accommodates the flat fixing air bag in the inflation state, which avoids scratching the mucosa when the air bag is placed in the vagina and reduces tissue damage; the plurality of fixing air bags are in one-to-one correspondence with the fixing grooves and are detachable, which facilitates replacement and cleaning and adapts to patients with different vaginal diameters; the second air path hole and the branch pipe ensure that the gas transported by the third air inlet pipe is uniformly distributed to each fixing air bag, so that the air bag is annularly inflated, the fixing surface tightly abuts against the inner circumferential wall of the vagina, and the main sleeve is stably fixed; through the above technical arrangement, the inflation and deflation of the fixing air bag are controllable, the device is convenient to place and take out, the overall structure avoids displacement of the main sleeve during the operation to damage the seal, reduces the burden of the doctor's hand operation, and improves the stability and safety of the operation.

[0023] The application further provides that the fixing surface of the fixing air bag is uniformly distributed with a plurality of anti-slip wrinkles.

[0024] The technical scheme has the beneficial effects that: the anti-skid wrinkle uniformly distributed on the fixing surface of the fixing air bag can increase the friction between the air bag and the inner wall of the vagina, that is, cooperate with the wrinkle on the inner wall of the vagina, effectively prevent the main sleeve from sliding due to instrument operation, patient position change and other factors, maintain the stability of the device, and avoid displacement to cause a sealing gap; the elastic structure of the anti-skid wrinkle can adapt to slight movement of the vaginal wall, reduce local compression of the air bag on the vaginal tissue, avoid tissue ischemic injury, and improve patient comfort; the wrinkle can further fill irregular gaps on the surface of the vaginal wall, enhance the sealing property, and indirectly assist in blocking the liquid overflow path; meanwhile, the anti-skid wrinkle does not affect the inflation and deflation of the fixing air bag and the disassembly and replacement, improves the fixing effect, guarantees the versatility and use convenience of the device, and reduces the surgical risk caused by displacement of the main sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a three-dimensional view of the present application; Figure 2 is a sectional view of the present application; Figure 3 is a three-dimensional view of the implanted shaft and its linkage structure in the present application; Figure 4 is a sectional view of Figure 3 ; Figure 5 is a three-dimensional view of the fixing air bag after shape replacement in the present application; Figure 6 is a three-dimensional view of the elastic air cushion and the locking spring in a separated state in the present application; Figure 7 is a three-dimensional view of the clamping ring in the present application; Figure 8 is a simple schematic diagram of the shape of the uterus in the prior art. DETAILED DESCRIPTION

[0026] The application provides a tumor diffusion prevention type cervical orifice plugging device, which comprises a main sleeve 1 used for being placed in the vagina of an external patient, a placing shaft 2 coaxially connected with the starting end of the main sleeve 1 and used for being placed in the external cervical orifice of the patient, a through hole 11 axially penetrating between the placing shaft 2 and the main sleeve 1 and used for being penetrated by an external endoscope 12, an expansion structure arranged on the placing shaft 2 and used for expanding the cervical orifice after the placing shaft 2 is placed in the cervical orifice of the patient, a sealing element arranged on the main sleeve 1 and used for being in linkage with the placing shaft 2 to clamp and limit the external tissue of the cervical orifice of the patient, the sealing element being in linkage with the placing shaft 2 to extrude and seal the gap between the inner circumferential wall of the cervical orifice and the outer circumferential wall of the placing shaft 2, a fixing assembly detachably arranged on the main sleeve 1 and used for stably fixing the main sleeve 1 in the vagina of the external patient, a first slot 21 annularly arranged on the outer circumferential wall of the placing shaft 2, the expansion structure comprising an expansion air bag 22 arranged in the first slot 21, a first air path hole 211 arranged in the first slot 21, a first air inlet pipe 23 arranged in the first air path hole 211, the starting end of the first air inlet pipe 23 being in communication with the expansion air bag 22, the end of the first air inlet pipe 23 being a first air inlet end 231 used for penetrating out of the patient's body and being in linkage with an external inflation equipment to transport gas to the first air inlet pipe 23 when the external inflation equipment operates, so that the expansion air bag 22 is inflated by the gas, the expansion air bag 22 being in a flat state in the first slot 21 in an un-inflated state, the expansion air bag 22 being annularly arranged in a maximum inflated state, and the outer circumferential wall surface of the expansion air bag 22 being an expansion surface 221 used for abutting against the inner circumferential wall of the cervical orifice, the placing shaft 2 being detachably connected with the main sleeve 1, a containing groove 13 annularly arranged on the top wall of the main sleeve 1, the sealing element comprising a locking spring 3 movably arranged in the containing groove 13, the locking spring 3 being arranged in a spiral line, the starting end of the locking spring 3 being arranged close to the direction of the placing shaft 2, the starting end of the locking spring 3 being arranged with a larger radial cross-section diameter than the end of the locking spring 3, and the radial cross-section diameter of the locking spring 3 gradually decreasing from the starting end to the end of the locking spring 3, a movable hole 14 arranged on the main sleeve 1 and used for being in communication with the containing groove 13, a movable shaft 31 movably arranged in the movable hole 14, an active piece 32 connected with the end of the locking spring 3, the active piece 32 being arranged in connection with the movable shaft 31, the movable shaft 31 being movably arranged in the movable hole 14 along the axis direction of the main sleeve 1 to drive the starting end of the locking spring 3 to penetrate out of or retract into the containing groove 13 when the movable shaft 31 moves, the inner circumferential wall surface of the locking spring 3 being a locking surface 33 used for abutting against the outer circumferential wall of the external tissue of the cervical orifice of the external patient, the locking surface 33 of the locking spring 3 being connected with an elastic air cushion 4, the elastic air cushion 4 being arranged in a spiral line, the elastic air cushion 4 being hollowly provided with an air inlet cavity, a second air inlet pipe 41 penetrating the active piece 32, the starting end of the second air inlet pipe 41 being in communication with the air inlet cavity, and the like.The second air inlet pipe 41 is provided with a second air inlet end 411 at the end thereof, which is used to pass through the patient's body and cooperate with the external inflation device to deliver gas to the second air inlet pipe 41 when the external inflation device is running, so that the elastic air bag is inflated. The uninflated state of the elastic air cushion 4 is flat and is arranged on the locking surface 33 of the locking spring 3. The maximum inflated state of the elastic air cushion 4 is arranged in a spiral strip shape, and the outer wall surface thereof is a limiting surface 42 used to abut against the outer circumferential wall of the external tissue of the cervical os. The bottom wall of the movable piece 32 is connected with two reset springs 34. The two reset springs 34 are oppositely arranged and connected with the bottom wall of the containing groove 13. Any one of the reset springs 34 is sleeved on the outer circumferential wall of the movable shaft 31. The outer circumferential wall of the movable shaft 31 is threadedly connected with the inner circumferential wall of the movable hole 14. The movable shaft 31 is provided with a clamping ring composed of a left clamping piece 5 and a right clamping piece 51. The radial cross sections of the left clamping piece 5 and the right clamping piece 51 are both arranged in a circular arc shape. The left clamping piece 5 is oppositely arranged with the right clamping piece 51 and the two are combined to form a guide hole 52 for passing through the external endoscope 12 and gap cooperation with the outer circumferential wall of the external endoscope 12. The left clamping piece 5 is connected with the movable shaft 31. The end of the left clamping piece 5 movably cooperates with the end of the right clamping piece 51 and is connected with a swing hinge 53. The inner circumferential wall of the guide hole 52 is circumferentially and uniformly provided with a plurality of through holes 521. Each of the through holes 521 movably arranges a ball 522 used to contact the outer circumferential wall of the external endoscope 12. The diameter of the ball 522 is larger than the diameter of the opening of the through hole 521. The fixing assembly comprises a mounting sleeve 6, which is sleeved on the main sleeve 1 and is threadedly connected with the main sleeve 1. A plurality of fixing grooves 61 are circumferentially formed in the outer circumferential wall of the mounting sleeve 6. The fixing assembly further comprises a plurality of fixed air bags 62, which are one-to-one corresponding to the fixing grooves 61 and are detachably connected. A second air path hole 63 is formed in the mounting sleeve 6. The second air path hole 63 is in communication with each of the fixing grooves 61 and the second air path hole 63 is communicated to the bottom wall of the mounting sleeve 6 to form an outlet 631. A third air inlet pipe 64 is arranged in the outlet 631. The third air inlet pipe 64 is connected with a plurality of branch pipes 641 at the beginning end thereof. The branch pipes 641 are one-to-one corresponding to the fixing grooves 61 and each of the branch pipes 641 is in communication with the adjacent fixed air bag 62. The end of the third air inlet pipe 64 is a third air inlet end 642, which is used to pass through the patient's body and cooperate with the external inflation device to deliver gas to the third air inlet pipe 64 when the external inflation device is running, so that the fixed air bag 62 is inflated. The uninflated state of the fixed air bag 62 is flat and is arranged in the fixing groove 61. The maximum inflated state of the fixed air bag 62 is arranged in a circular ring shape, and the outer circumferential wall surface of the fixed air bag 62 is a fixing surface 621 used to abut against the inner circumferential wall of the vagina of the external patient. The fixing surface of the fixed air bag 62 is circumferentially and uniformly provided with a plurality of anti-skid wrinkles.

[0027] The overall use process of the above anti-tumor spread type cervical orifice plugging device is as follows: 1. Preoperative preparation: select an insertion shaft suitable for the size of the patient's cervix, coaxially and detachably connect it with the main sleeve, threadedly install the mounting sleeve on the outer periphery of the main sleeve, assemble and fix the air bag in the corresponding fixed groove, and respectively connect the first air inlet pipe (connected with the expansion air bag), the second air inlet pipe (connected with the elastic air cushion), and the third air inlet pipe (connected with the fixed air bag) with external inflation equipment, check the air tightness of each air bag and the flexibility of the movable shaft and the clamping ring.

[0028] 2. Device implantation: gently implant the device with the un-inflated expansion air bag (flatly in the first slot) and the fixed air bag (flatly in the fixed groove) into the patient's vagina, so that the front end of the insertion shaft is aligned with the cervical orifice, the external expansion device (such as a cervical dilator) is used to dilate the cervical orifice to a certain diameter, and then the insertion shaft is slowly pushed in until the front end of the main sleeve is attached to the tissue around the cervical orifice in the vagina, and the implantation is stopped.

[0029] 3. Cervical orifice dilation: start the inflation equipment, send gas to the expansion air bag through the first air inlet pipe, make it expand in a circular ring shape, and make the expansion surface uniformly abut against the inner circumferential wall of the cervical orifice. After the cervical orifice is dilated, close the first air inlet pipe passage.

[0030] 4. Cervical orifice sealing: rotate the threaded connection movable shaft to drive the movable piece and the locking spring piece to extend along the container groove, so that the locking surface of the spiral spring piece is attached to the external tissue of the cervical orifice; then send gas to the elastic air cushion through the second air inlet pipe to make it expand in a spiral strip shape, so that the limiting surface fills the tissue gap and enhances the clamping, realizes the extrusion sealing of the gap between the inner circumferential wall of the cervical orifice and the outer circumferential wall of the insertion shaft, and closes the second air inlet pipe passage to maintain the current gas supplement state, i.e. the current air bag inflation state.

[0031] 5. Device fixation: send gas to the fixed air bag through the third air inlet pipe to make it expand in a circular ring shape, and the fixed surface (with anti-slip wrinkles) tightly abuts against the inner circumferential wall of the vagina, increases the friction between the air bag and the vaginal wall, completes the stable fixation of the main sleeve in the vagina, and closes the third air inlet pipe passage.

[0032] 6. Endoscopic operation: open the left and right clamping pieces of the clamping ring (through the swing hinge), pass the endoscope through the perforation, close the clamping ring to make the ball in the through hole attach to the outer circumferential wall of the endoscope, and pass the ball to help the endoscope smoothly enter the uterine cavity; during the operation, the endoscope is used to carry out tumor-related surgical operation, the clamping ring and the ball maintain the coaxiality of the endoscope, and avoid the displacement of the endoscope to damage the seal.

[0033] 7. Postoperative removal: After the operation, first remove the endoscope and open the clamp; then open the second, first and third air inlet passages in sequence through the external inflation device, respectively expel the elastic air cushion, expand the air bag and fix the gas in the air bag to restore it to a flat shape; finally, slowly pull the main sleeve to remove the insertion shaft, main sleeve and fixation components together from the vagina to complete the device usage procedure.

[0034] In the above-mentioned technology, the shape of the fixing airbag can be set according to actual needs. That is, the shape of the fixing airbag in the above-mentioned document is a standard shape. Under specific needs, the fixing airbag can be replaced, that is, it can be replaced with a fixing airbag with anti-slip lips, as shown in the attached drawings of the specification. The fixed airbag inflates into a ring shape, but its outer peripheral wall radial cross section forms two oppositely arranged anti-slip lips. The two anti-slip lips are oppositely arranged and the radial cross section is arc-shaped, thereby improving the contact strength and contact area with the vaginal inner peripheral wall, thereby improving stability and fixing strength, while avoiding stress concentration that could cause the fixing airbag to shake or shift; the anti-slip lips are marked as 623 in the attached drawings of the specification.

[0035] The external inflation device described above is existing technology. It can be an air pump with inflation and deflation functions. Since it is existing technology, its structure and function will not be described in detail.

[0036] The accompanying drawings in the above instruction manual only show the position and connection relationship of each component, that is, for illustration only, and do not impose too many restrictions on their shape. They can be adjusted according to the actual situation.

[0037] The fixed airbag surface shown in the attached drawings of the above specification does not show anti-slip wrinkles to avoid obscuring the structure. The anti-slip wrinkles are wrinkled, similar to the wrinkles produced by crumpling a paper towel in the prior art, but smaller in size. Its structure is prior art and the material can be a soft material. Therefore, its structure and function will not be described or illustrated in detail.

[0038] The above instruction manual is attached Figure 8 The diagram shown is a schematic of the shape of the uterus in the prior art. The external os of the cervix is ​​the external opening of the cervix leading to the uterine cavity. The external tissue of the external os of the cervix mentioned above is actually the part of the outer periphery of the external os of the cervix in the figure with an arc-shaped convex radial cross section. That is, the function of the locking spring is to be fitted on the outer peripheral wall of the arc-shaped convexity and cooperate with the insertion shaft inserted into the cervix to seal the gap between the inner peripheral wall of the external os of the cervix and the outer peripheral wall of the insertion shaft.

[0039] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A cervical os occlusion device for preventing tumor spread, characterized in that: The device includes a main sleeve for insertion into a patient's vagina. The main sleeve has an insertion shaft coaxially connected to its beginning end for insertion into the external os of the patient's cervix. An axial perforation is provided between the insertion shaft and the main sleeve for the insertion of an external endoscope. The insertion shaft has an expansion structure for dilating the external os of the cervix after insertion. The main sleeve has a sealing element that works in conjunction with the insertion shaft to clamp and limit the external tissue of the patient's external os. This sealing element works in conjunction with the insertion shaft to compress and seal the gap between the inner wall of the external os of the cervix and the outer wall of the insertion shaft. The main sleeve also has a detachable fixing component for stable fixation within the patient's vagina.

2. The cervical os occlusion device for preventing tumor spread according to claim 1, characterized in that: The insertion shaft has a first groove circumferentially formed on its outer peripheral wall. The expansion structure includes an expansion airbag disposed in the first groove. The first groove has a first air passage hole and a first air inlet pipe. The beginning of the first air inlet pipe is connected to the expansion airbag. The end of the first air inlet pipe is a first air inlet end for passing through the patient's body and cooperating with an external inflation device to deliver gas to the first air inlet pipe when the external inflation device is running, so that the expansion airbag is inflated. The expansion airbag is flat in its uninflated state and is disposed in the first groove. The expansion airbag is annular in its maximum inflated state and the outer peripheral wall of the expansion airbag is an expansion surface for abutting against the inner peripheral wall of the external os of the cervix. The insertion shaft and the main sleeve are detachably connected.

3. The cervical os occlusion device for preventing tumor spread according to claim 2, characterized in that: The main sleeve has a circumferential groove on its top wall. The sealing element includes a locking spring that is movably disposed in the groove. The locking spring is spirally arranged, with its starting end positioned close to the insertion shaft. The radial cross-sectional diameter of the starting end of the locking spring is larger than that of the ending end, and the radial cross-sectional diameter gradually decreases from the starting end to the ending end. The main sleeve has a movable hole for communicating with the groove. A movable shaft is movably disposed in the movable hole. A movable piece is connected to the end of the locking spring. The movable piece is connected to the movable shaft. The movable shaft is movably disposed in the movable hole along the axis of the main sleeve so that when the movable shaft moves, it drives the starting end of the locking spring to pass through or retract into the groove. The inner peripheral wall surface of the locking spring is a locking surface for abutting against the outer peripheral wall of the external tissue of the external os of the patient's cervix.

4. The cervical os occlusion device for preventing tumor spread according to claim 3, characterized in that: An elastic air cushion is connected to the locking surface of the locking spring. The elastic air cushion is spirally arranged and has a hollow air inlet chamber. A second air inlet tube is passed through the movable piece. The beginning of the second air inlet tube is connected to the air inlet chamber. The end of the second air inlet tube is a second air inlet end for passing through the patient's body and cooperating with an external inflation device to deliver gas to the second air inlet tube when the external inflation device is running, so that the elastic airbag is inflated. The elastic air cushion is flat in its uninflated state and is attached to the locking surface of the locking spring. The elastic air cushion is spirally arranged in its maximum inflated state and its outer wall is a limiting surface for abutting against the outer peripheral wall of the external tissue of the cervix.

5. The cervical os occlusion device for preventing tumor spread according to claim 2, characterized in that: The bottom wall of the movable plate is connected to two return springs. The two return springs are arranged opposite each other and both return springs are connected to the bottom wall of the receiving groove. Any one of the return springs is sleeved on the outer peripheral wall of the movable shaft.

6. The cervical os occlusion device for preventing tumor spread according to claim 2, characterized in that: The outer peripheral wall of the movable shaft is threadedly connected to the inner peripheral wall of the movable hole.

7. The cervical os occlusion device for preventing tumor spread according to claim 2, characterized in that: The movable shaft is provided with a clamping ring, which is composed of a left clamping piece and a right clamping piece. The radial cross-section of the left clamping piece and the right clamping piece are both arc-shaped. The left clamping piece and the right clamping piece are arranged opposite to each other and together form a guide hole for the external endoscope to pass through and to fit with the outer peripheral wall of the external endoscope. The left clamping piece is connected to the movable shaft, and the end of the left clamping piece is movably engaged with the end of the right clamping piece and connected to a swing hinge.

8. The cervical os occlusion device for preventing tumor spread according to claim 7, characterized in that: The guide hole has several through holes evenly distributed around its inner circumference. Each through hole has a ball that is movably disposed therein for contacting the outer circumferential wall of the external endoscope. The diameter of the ball is larger than the diameter of the opening of the through hole.

9. A cervical os occlusion device for preventing tumor spread according to claim 1, characterized in that: The fixing component includes a mounting sleeve, which is fitted onto the main sleeve and threadedly connected to it. The outer peripheral wall of the mounting sleeve has several circumferentially circumferentially formed fixing grooves. The fixing component also includes several fixing airbags, each corresponding to one of the fixing grooves and detachably connected. The mounting sleeve has a second air passage hole, which communicates with each fixing groove and extends to an outlet on the bottom wall of the mounting sleeve. A third air inlet pipe is provided in the outlet, and the beginning of the third air inlet pipe is connected to several branch pipes. Several branch pipes correspond one-to-one with several fixed slots, and each branch pipe is connected to an adjacent fixed airbag. The end of the third air inlet pipe is used to pass through the patient's body and cooperate with the external inflation device to deliver gas to the third air inlet pipe when the external inflation device is running, so that the fixed airbag is inflated. The fixed airbag is flat in its uninflated state and is located in the fixed slot. The fixed airbag is annular in its maximum inflated state, and the outer peripheral wall of the fixed airbag is a fixed surface for abutting against the vaginal wall of the patient.

10. A cervical os occlusion device for preventing tumor spread according to claim 9, characterized in that: The fixed surface of the fixed airbag is evenly distributed with several anti-slip folds.

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