156 results about "Intra uterine" patented technology

A hemostatic device includes an elongated body, a flexible annular portion, a shield and an inflatable seal. The elongated body is configured to be connected to a vacuum source. The flexible annular portion is connected to the elongated body and includes a plurality of holes on the inner circumference of the flexible annular portion. The flexible annular portion is configured to be placed in the uterus. When the elongated body is inserted into the uterus, activation of the vacuum source is configured to draw a vacuum through the plurality of holes to contract the uterus. The shield is folded around the outer circumference of the annular portion, and the shield has an edge extending radially inward relative to the flexible annular distal portion. The shield is configured to prevent tissue from blocking the plurality of holes when a vacuum is applied. The inflatable seal is connected to the elongated body and configured to seal the uterus.

The utility model discloses a medical scraping and sucking forceps head with a transparent anti-sticking silicon coating, which comprises scraping forceps, the scraping forceps comprise forceps heads and handles, the forceps heads are fixedly arranged at one ends of the forceps heads, and the number of the handles and the number of the forceps heads are both two. When the suction tube is used for sucking the endometrium or uterine cavity contents, residues can be adhered to the inner wall of the suction tube and are difficult to completely remove when suction force is insufficient, after uterine curettage is finished, the whole device is taken out, the motor is started, the motor drives the lead screw to rotate, the lead screw is driven by the motor to rotate, and the endometrium or uterine cavity contents are sucked away through the suction tube. The lead screw drives the movable ring in threaded connection to move, the movable ring and the cleaning ring are fixedly connected through the connecting piece and the like, when the movable ring slides on the suction pipe, the cleaning ring slides in the suction pipe, residues attached to the inner wall of the suction pipe are cleaned, and the residues can be sucked away by the suction device conveniently.

A method of uterine hemostasis involves inserting a suction line of a postpartum hemorrhage mitigation device through a cesarian incision into the uterine cavity, guiding the suction line through the cervix and into the vagina, positioning an anchoring mechanism of the device adjacent the internal cervical OS of the uterine cavity, closing the cesarian incision to enclose the suction line within the uterine cavity, and connecting the suction line to a negative pressure source that introduces negative pressure to the uterine cavity via the suction line, thereby causing contraction of the uterus and evacuation of fluid from the uterus via the suction line extension. Upon completion of a treatment period, the negative pressure source is disconnected, and the suction line and anchoring mechanism are extracted from the uterus through the cervical canal and the vagina.

A device and method of use for preventing or treating postpartum uterine bleeding or hemorrhage of a patient. The device includes a suction tube having a distal end portion at which an aperture or an array of plural apertures is located and extending about the periphery of the distal portion. A sealing member having an apex and flexible sidewall is mounted on the suction tube so that a portion of its sidewall can be brought into engagement with tissue of the uterus. Suction from a vacuum source is applied to a proximal end portion of the suction tube to apply suction via the aperture(s) to the interior of the patient's uterus. The suction tube may include an illumination system for illuminating the interior of the patient's vagina.

The endometrial cancer transvaginal examination device comprises an ultrasonic examination trolley, a cable is slidably connected to the side face of the ultrasonic examination trolley, an examination device shell is arranged at one end of the cable, a push block is slidably connected to the examination device shell, a rack is fixedly connected to the lower portion of the push block, and a common gear is slidably connected to the side face of the rack; the side face of the common gear is fixedly connected with a second bevel gear, the second bevel gear is in meshed connection with a first bevel gear, and one side of the first bevel gear is rotationally connected with an inspection ball. According to the multi-angle ultrasonic examination instrument, ultrasonic waves are emitted through multi-angle rotation during an operation, direct compression and unnecessary rotation actions on the interior of the vagina are reduced through the design, the comfort degree of a patient in the examination process is improved, meanwhile, the examination accuracy is improved through multi-angle ultrasonic wave emission, and a doctor can know the condition in the uterus more comprehensively.

The invention belongs to the technical field of medical apparatus and instruments, and particularly relates to a gynecological endometrium sampling device which comprises a liquid negative pressure extraction mechanism, a liquid collection and storage mechanism and a self-adaptive uterus sampling mechanism, the liquid collection and storage mechanism is fixedly arranged on the liquid negative pressure extraction mechanism, and the self-adaptive uterus sampling mechanism is fixedly arranged on the liquid negative pressure extraction mechanism. The self-adaptive uterus sampling mechanism is arranged in the liquid negative pressure extraction mechanism and is in sliding connection with the liquid negative pressure extraction mechanism; liquid in the uterus can be sucked and removed firstly, then comprehensive sampling is conducted, a sampled sample is protected and stored, the sample quality is effectively improved, and the sampling failure problem is avoided.

A tissue removal device includes a housing, an outer tube having a distal portion configured for transcervical insertion into a uterus, an inner tube slidably disposed within the outer tube lumen, a vacuum generation chamber disposed within the housing, a movable piston slidably disposed in the vacuum generation chamber, a collection chamber, a manual actuator moveably coupled to the housing and operatively coupled to the piston, and proximal and distal one-way valves. The outer tube has an outer tube lumen, a tissue in-take opening proximate a distal end thereof, and a proximal end coupled to the housing. The inner tube has an inner tube lumen extending from an open inner tube distal end to an open inner tube proximal end, the open inner tube distal end comprising a cutting edge configured to sever intrauterine tissue extending through the tissue in-take opening in the outer tube.

The invention belongs to the technical field of medical model construction, and particularly relates to a construction method of a severe endometrial injury mouse model ineffective in MSCs treatment. The method specifically comprises the following steps: S1, selecting a female mouse to adapt to the environment for 2-3 days; s2, after the mouse adapts to the environment, anesthetizing the mouse on the 0th day, performing laparotomy to physically scrape the inner uterine wall of the mouse, and then performing injury induction and suturing on the inner uterine wall by using an LPS (Lipopolysaccharide) solution; s3, repeating the step S2 on the third day, and performing laparotomy, curettage, LPS induction and suture on the mouse; s4, preliminarily evaluating the severe endometrial injury condition of the mouse on the fifth day; s5, injecting MSCs into the uterus of the mouse with the severe endometrial injury to treat the endometrial injury; and S6, on the eighth day, collecting a uterus sample to evaluate the repair capability of the MSCs, and screening to obtain the severe endometrial injury mouse model ineffective in MSCs treatment. Through a mode of carrying out physical curettage and lipopolysaccharide induction on the uterus through twice laparotomy, severe IUA patients ineffective in clinical MSCs treatment are better simulated.

The invention relates to the technical field of medical gynecology, and discloses an endoscopic hysterectomy device which comprises a root plate, a pair of oppositely arranged moving blocks are slidably mounted on each of the four wall surfaces of the root plate, connecting rods are hinged to the outer sides of the moving blocks, silica gel plates are hinged to the ends, away from the moving blocks, of the connecting rods, and a first electric push rod is fixedly mounted on the left side of the root plate; the extension end of the first electric push rod is fixedly connected with a rear connecting plate, and two air pumps are started to conduct air inflation expansion and air exhaust contraction on the two first air bag pipes or the two second air bag pipes at the corresponding positions, so that the connecting portion of the rear connecting plate and the middle connecting plate is bent leftwards and rightwards. And the positions of a middle connecting plate and a front connecting plate are bent up and down to control the position and posture of a front extending head in the uterus, on the basis, a second electric push rod extends to push a third motor on a sliding block together with a cutter to a proper position, and then the second motor is started to drive the rotating cutter to move in the circumferential direction; therefore, the cutter can cut the uterus of the patient.

An intra-uterine monitoring system is described. The system has an intra-uterine device, shaped and dimensioned for implantation in a uterus, and a receiver device. The intra-uterine device is for measuring conditions within the uterus to generate sensor data and for acting as a contraceptive device to prevent pregnancy. The receiver device is for wirelessly receiving the sensor data generated by the intra-uterine device implantable sensor device.

The invention relates to an inserter for an intrauterine system, comprising a handle (3) having a longitudinal opening (8) at its first end, said opening (8) having a longitudinal axis parallel to the longitudinal axis of the inserter, a first end (8a) and a second end (8b), a moveable slider (5) arranged in said longitudinal opening (8) and having a first end (5a) and a second end (5b), a plunger (2) attached to the handle (3), an insertion tube (6) arranged around the plunder (2) having a first end and a second end, with its second end attached to the slider (5), wherein the inserter further comprises locking means for reversibly locking the intrauterine system in relation to the plunder (2) via a removal string of the intrauterine system, said locking means being controllable by the slider (5) and / or the insertion tube (6).

The utility model discloses a uterus scraper with a temporary storage function, which comprises a tube body, a storage cavity is arranged in the tube body, a slidable curette part is arranged on the outer wall of the tube body, a sealing curette head is arranged at the port of the tube body and on one side close to the inlet of the storage cavity, and a piston part is arranged in the storage cavity. By designing the sealed curette head, substances scraped by the curette piece on the inner wall of the uterus can be effectively received, and residual tissues are prevented from easily falling off from the curette head; by designing the tube body with the storage cavity and matching the tube body with the piston piece, if a large amount of residual tissues are scraped, the tissues falling into the sealing curette head can be pushed into the inlet of the storage cavity through the movable curette piece; the arc-shaped push rod is pulled to drive the piston plate to move, tissue can be sucked into the storage cavity under the action of negative pressure, the temporary storage effect is achieved, scraped tissue can be taken out easily, and the requirement for frequently replacing instruments or cleaning scraped objects in the operation process is avoided.

The utility model belongs to the technical field of intrauterine adhesion prevention devices, and particularly relates to a degradable supporting diaphragm device for preventing and treating intrauterine adhesion. The technology comprises a degradable diaphragm, the diaphragm is of an inverted pear-shaped structure and is hollow, two supporting rods which are arranged left and right are arranged in the diaphragm, two connecting rods which are arranged left and right are arranged between the two supporting rods, one ends of the two connecting rods are hinged together through a mounting block, and the other ends of the two connecting rods are hinged to the mounting block. The other ends of the two connecting rods are hinged to the ends, corresponding to the connecting rods, of the supporting rods. Fixing blocks are arranged at the bottoms of the supporting rods, and the other ends of the supporting rods are hinged to the fixing blocks; a driving assembly used for driving the connecting rod and the supporting rod to conduct telescopic deformation is arranged in the diaphragm. The problem that in the prior art, a diaphragm is inconvenient to move into the uterus is solved.

The utility model relates to the technical field of intrauterine devices, in particular to a T-shaped intrauterine device external hanging fixator which comprises a fixing portion and an installation portion, the fixing portion comprises a fixing cylinder and a fixing plate arranged at the top of the fixing cylinder, two through hanging holes are oppositely formed in the side wall of the fixing cylinder, and a fixing rod is arranged at the position, corresponding to the axis of the fixing cylinder, of the top of the fixing plate. The fixing rod is spiral; the mounting part comprises a mounting cylinder coaxially and movably arranged on the fixing cylinder in a sleeving mode, the top of the mounting cylinder abuts against the bottom of the fixing plate, and a limiting piece is arranged between the mounting cylinder and the fixing cylinder and used for limiting relative rotation of the mounting cylinder and the fixing cylinder. By adopting the technical scheme provided by the utility model, the technical problem that the expected contraception and treatment effects cannot be achieved due to the fact that the contraception device is easy to move downwards in the uterus and even prolapse from the uterus after the contraception device is put in the uterus in the prior art can be solved.

A single handheld medical device for performing endometrial curettage and / or HSG procedures is disclosed. [Solution] The device includes a body comprising a handle integrally connected to an arm having an articulated member at its distal end. The handle comprises means for storing and pumping fluid into the uterus and locating the articulated member within the uterus using ultrasound or X-rays. The arm further comprises a shielding device operable to slidably engage with the arm of the device, and the shield and arm are configured to cover and seal the external os of the cervix to prevent backflow during use. Optional display means are disclosed, which comprises an image screen that is mountably attached to the device and communicates with a scope positioned within the arm.

The invention relates to the technical field of insemination and transplantation, and provides an artificial insemination and transplantation device for a reproductive center, the artificial insemination and transplantation device comprises an imbedding base, an imbedding pipe and an imbedding component, the imbedding pipe is slidably assembled at the top of the imbedding base, the imbedding component is arranged between the imbedding base and the imbedding pipe, and the imbedding pipe is slidably assembled at the top of the imbedding base. Through the arrangement of the visual assembly, the angle adjusting assembly and other structures, when the device is started, firstly, the visual assembly is used for positioning the uterine orifice, and the angle adjusting assembly flexibly adjusts the angle of the body entering tube to optimize the view field. After the uterine orifice is found, the body entering assembly is stably fed into the body entering pipe, and the lubricating assembly is smooth during the period. After intrauterine positioning, the sealing assembly seals the uterine orifice, the fixing assembly releases and recycles the visual assembly, then the semen imbedding assembly is accurately imbedded into the semen, the operation accuracy is improved in the whole process, and through the technical scheme, the problems that in the prior art, the operation accuracy is insufficient, and the use flexibility is poor are solved.

The invention relates to the field of human body sampling devices, and particularly discloses an artificial insemination and endometrium sampling device with a visual uterine cavity. The main pipeline and the auxiliary pipeline are arranged on the mounting head, the push-pull rod and the piston are arranged in the main pipeline, and the lens tube of the endoscope is inserted into the auxiliary pipeline through the inner curve of the mounting head, so that when the endometrium of a patient is finely sampled, a shot picture of the lens tube can be obtained through the endoscope; the main pipeline and the auxiliary pipeline are stretched into appropriate positions in the uterus according to images, then endometrium sampling operation is completed, when artificial insemination operation is carried out, images can be shot through a lens tube of an endoscope, the main pipeline and the auxiliary pipeline are stretched into appropriate positions in the vagina, and then the artificial insemination operation is completed. Endometrial sampling operation and artificial insemination operation are visually completed, and the efficiency of medical work can be effectively improved.

The invention discloses an artificial insemination transplantation device for reproductive medicine, relates to the technical field of reproductive medicine, and aims to solve the technical problem of single function of the artificial insemination transplantation device for reproductive medicine. A gap in the machine body forms an operation cavity; the operation cavity is sequentially provided with a pumping control mechanism, a constraint adjusting mechanism and a foundation propelling mechanism. The probing transplantation catheter is adjusted and controlled, so that the probing transplantation catheter has a peristaltic propulsion state to perform relatively mild and flexible insertion work on an unproduced cervical orifice, and damage to the cervical orifice caused by a conventional hard propulsion process is effectively reduced based on the characteristics of peristaltic motion; by matching with the separated and stacked state of the probing transplantation catheter, the axial area of the probing transplantation catheter at the controllable distance position is increased, the probing transplantation catheter can be temporarily left in the uterus to block the uterine neck internal opening after production, the situation that the sperm transplantation amount is insufficient due to sperm backflow and uterus contraction is reduced, and the adaptation functionality is effectively improved.

The utility model discloses a pair of uterine cavity supporting forceps, which relates to the technical field of medical treatment, and comprises a transverse distraction mechanism, a longitudinal distraction mechanism is arranged on the bottom surface of the transverse distraction mechanism, the transverse distraction mechanism comprises a handle I, the side surface of the handle I is fixedly connected with a limiting sliding chute, one end of the handle I is fixedly connected with a fixed disc, and the other end of the handle I is fixedly connected with a movable disc. And the top surface of the fixed disc is fixedly connected with a rotating rod. The longitudinal distraction mechanism is fixed to the bottom face of the transverse distraction mechanism through the peep window, the peep window can conduct a series of operations on the interior of the uterus after the whole device is distraction, and the distraction plate is attached to the bottom face of the transverse distraction mechanism and inserted into the uterine cavity along with the transverse distraction mechanism. When the transverse opening mechanism is opened and fixed, a pull rod can be pinched forcibly, at the moment, a third sliding head is opened with a movable rod as the axis, a threaded sliding rod can slide in a fixed sliding groove, and when the opening angle is appropriate, a fixing nut can be rotated to lock the opening angle of the third sliding head.

The utility model relates to a novel uterus holder relates to medical equipment technical field for solving the problem that the internal tissue of uterus in prior art is extremely easy to fall into the gap between two adjacent uterus umbrella long bones, this not only can influence the definition of operation visual field, still can cause certain interference to the precision of operation operation, including: uterus holder body, uterus umbrella subassembly and storage spare, the storage spare installs on the uterus holder body, the uterus umbrella subassembly includes the hollow umbrella stem, umbrella face and multiple umbrella bones, one end of umbrella stem removes setting in the storage spare, the storage spare is used for accomodating the uterus umbrella subassembly, the other end of each umbrella bone rotates and installs in the umbrella stem, the umbrella face covers on the umbrella bone, each umbrella bone with the umbrella stem all is provided with umbrella bone angle adjusting spare, the rotation included angle between umbrella bone and the umbrella stem is arranged 0~90 DEG.

The invention relates to the technical field of medical tools, in particular to an artificial membrane rupturing structure which comprises a barrel and a suction cup mounted at the top end of the barrel and further comprises a guide seat, a membrane rupturing device, a membrane rupturing device and a membrane rupturing device, the guide seat is mounted in the barrel, and a through hole is formed in the guide seat; the adsorption mechanism is installed in the cylinder body and connected with the guide seat, and the adsorption mechanism enables the suction cup to be adsorbed to the surface of the amniotic membrane; the artificial membrane rupturing structure is different from the prior art, in the using process of medical staff, the amniotic membrane can be clamped and fixed only by attaching the suction cup to the amniotic membrane and then pulling the hollow push rod, then puncturing is automatically conducted, the flow speed after membrane rupturing is stable, the membrane rupturing can be easily completed even though the medical staff with less experience, and operation is easy; the amniotic fluid after rupture of the membrane automatically flows to the outside through the drainage tube from the inside of the cylinder, and the amniotic fluid is not in contact with the uterus of the pregnant woman, so that the probability of infection in the uterus of the pregnant woman is greatly reduced, and the turbidity of the amniotic fluid flowing out can be directly observed.

Compositions, methods, and uses for injecting hydrogels of ablative chemicals are described. The hydrogel is biodegradable and can be formed in situ. The hydrogel is effective to deliver tissue ablative chemicals to a target site. The tissue ablative chemicals delivered by the hydrogel may also be particularly effective for intrauterine ablation (even in the presence of fibroma) or for scar treatment of fallopian tubes by minimally invasive surgery for birth control. The hydrogel may also particularly effectively avoid tissue ablative chemicals from contacting non-target tissue. The hydrogels may be implanted using a variety of delivery carriers, including injections and catheters. The hydrogel may be designed to be limited to a target site for a time of several hours to several days such that target tissue ablation may be performed within a walkable patient. Methods are described for the transcervical placement of an in situ formed hydrogel into the uterus or one or more fallopian tubes.

The invention discloses a novel embryo transplant gun for cattle which can bend and extend forward along with the uterine horn, and relates to the field of embryo transplant guns. The invention comprises a gun barrel, a gun core and a culture fluid capillary, wherein the culture fluid capillary is matched and installed in a barrel hole at the inner end of the gun barrel, a piston is arranged in the culture fluid capillary, the gun core is arranged in the gun barrel, and the gun barrel also comprises an inflatable part, a hollow steel needle and an extension catheter, wherein the extension catheter is a hose with a hollow interior. The invention pushes the embryo in the capillary into the extension catheter through the piston, and then pierces the piston through the hollow steel needle to communicate with the inner cavity of the capillary, an operator pushes the piston handle of the syringe to allow the gas in the syringe to enter the extension catheter through the hollow steel needle, and relies on the gas to inject the embryo in the extension catheter into the uterine horn of the cattle, thereby solving the problem that the gun core cannot inject the embryo into the uterus after the capillary is connected to the extension catheter, and the operator does not need to grab the front end of the uterine horn, thereby greatly reducing the operating difficulty, facilitating the use of the operator, and indirectly improving the conception rate.

Fetal cardiac magnetic resonance (MR) images of a living fetus, within a uterus of a parent of the fetus, can be generated by imaging the fetus within the uterus using a magnetic resonance imaging (MRI) system. Information indicative of fetal cardiac cycles can be derived from MR data obtained by an MRI system while imaging the fetus, the MR data including MR data for the center of k-space. The derived information may be used to differentiate the fetal cardiac cycles from other sources of noise in the MR data such as the parental cardiac cycles.

The utility model belongs to the technical field of uterine curettage devices, and particularly relates to a uterine curettage device which comprises a grab handle, a length adjusting mechanism is arranged on the left side of the grab handle, a curettage head mounting mechanism is arranged on the left side of the length adjusting mechanism, a curettage head is arranged on the left side of the curettage head mounting mechanism, and the curettage head is used for curettage operation in the uterus. The curettage head mounting mechanism is used for mounting and dismounting the curettage head, the length adjusting mechanism is used for adjusting the length of the uterine curettage device, the curettage head comprises a fixing ring, and the top of the fixing ring is fixedly connected with an elastic ring. According to the novel uterine curettage device, the curettage head is placed in a medicament with the effect of promoting tissue healing, the medicament is absorbed by the medicament placing sponge, the curettage head is controlled by the grab handle to extend into the uterus of a patient to perform curettage operation, and during curettage, the medicament placing sponge is extruded by the elastic ring, so that medicament factors in the medicament placing sponge are released, and the healing of the tissue at the curettage part is promoted; therefore, operative treatment and postoperative repair of the uterine curettage device can be carried out synchronously.

The utility model discloses a tube cavity matched with a hysteroscope sheath for use and having a suction function, which comprises a tube body, a suction channel is formed in the tube body along the length direction, a suction end is formed corresponding to the front end of the tube body, the front end of the tube body is connected with a trumpet-shaped suction unit made of an elastic material, and a sliding structure is formed between the suction unit and the tube body. The sliding structure is used for allowing the suction unit to slide relative to the axis direction of the suction channel. The front end of the tube body can obtain a larger suction area through the trumpet-shaped suction unit so as to improve the suction effect, the elastic suction unit can be folded to reduce the size of the tube body so that the tube body can enter the uterus through a hysteroscope, meanwhile, the elastic suction unit can also guarantee flexible contact with the inner wall of the uterus, and the suction effect is improved. And through the arrangement of the sliding structure, a certain movement range can be provided for the attraction unit, and then the safety performance is further improved in cooperation with the elastic material of the attraction unit.

Disclosed herein is a vapor therapy device for producing intra-uterine tissue effects. The device can include a shaft, including a proximal portion and a distal portion, a fluid-expandable medium, near the distal portion of the shaft, a fluid-delivery conduit, extending between the proximal portion and the distal portion of the shaft, the fluid-delivery conduit comprising an outlet, near the distal portion of the shaft, for delivery of the fluid toward the medium, and an in vivo heat generator, near the distal portion of the shaft, to heat the fluid. A method of treating a patient for menorrhagia with the device can include introducing a medium, in a contracted state, into a patient, delivering a fluid toward the medium to expand the medium in vivo; generating heat in vivo on or near the medium to vaporize the fluid, and exposing a treatment site to the vaporized fluid.

The utility model relates to a uterine cavity contraceptive device which comprises a contraceptive device body and a medicine slow release structure, and the contraceptive device body comprises a fixed section, a U-shaped section and an expandable section. The fixed section is provided with a first end and a second end, the U-shaped section is also provided with a first end and a second end, the expandable section comprises a first expandable section and a second expandable section, the two ends of the first expandable section are connected with the first end of the fixed section and the first end of the U-shaped section respectively, and the two ends of the second expandable section are connected with the second end of the U-shaped section respectively. The two ends of the second expandable section are connected with the second end of the fixed section and the second end of the U-shaped section respectively, the first end of the medicine slow-release structure is fixedly connected to the fixed section, and the medicine slow-release structure is located in a space defined by the fixed section, the U-shaped section and the expandable sections; the surfaces of the U-shaped section and the fixed section are electroplated with copper layers, the contraceptive device body can release copper ions, fertilized ovum implantation is inhibited, the contraceptive effect is achieved, the shape of the expandable section can be changed, and the contraceptive device can be conveniently placed into the uterus.

The invention discloses a radiography auxiliary device for the imaging department, and relates to the field of medical instruments, the radiography auxiliary device comprises a catheter used for conveying radiography liquid, and further comprises a supporting assembly used for supporting the catheter, the supporting assembly comprises a supporting sleeve A and at least two guiding pieces A, and the guiding pieces A are arranged in the supporting sleeve A; according to the radiography auxiliary device for the imaging department, the uterus expanding mechanism is arranged, the driving assembly drives the push plates in the multiple opening assemblies to rotate around the axis of the rotating shaft, the multiple push plates are arranged in a circumferential array mode with the axis of the A supporting sleeve as the center, the multiple push plates rotate to open the cervix, and under wrapping of the wrapping piece, the cervix can be expanded, so that the cervix can be expanded. The push plate is prevented from being in direct contact with the inner wall of the cervix uterus, pain of a patient is reduced, after the cervix uterus opening of the patient is opened, a medical worker pushes the catheter, and the catheter moves in the axial direction of the A supporting sleeve under the limitation of the A guiding piece, so that the catheter is inserted into the uterus of the patient, and the radiography efficiency is improved.