CN214970960U

CN214970960U - Double-sacculus uterus oviduct radiography catheter

Info

Publication number: CN214970960U
Application number: CN202120546277.XU
Authority: CN
Inventors: 程琦
Original assignee: Jiangsu Breathe Care Biotechnology Co ltd
Current assignee: Jiangsu Breathe Care Biotechnology Co ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-12-03
Anticipated expiration: 2031-03-16

Abstract

The utility model discloses a two sacculus uterus oviduct radiography pipe, including sheath pipe, first sacculus, second sacculus and seal wire, the sheath pipe front end is equipped with first opening, is equipped with the second opening between first sacculus and the second sacculus. The filling of the first balloon is used for blocking the uterine orifice for intrauterine angiography, and the filling of the second balloon is used for realizing selective salpingography of salpingemphraxis blocking on the basis of intrauterine angiography. The radiography catheter is used for uterine cavity lesion, fallopian tube patency detection, selective fallopian tube radiography and dredging treatment after proximal fallopian tube blockage, multiple operations can be achieved only through one catheter, the catheter body comprises the flexible material, the direction of the tube head is adjusted in the uterine cavity, and the radiography catheter can be simultaneously suitable for HSG/SSG and HyCoSy.

Description

Double-sacculus uterus oviduct radiography catheter

Technical Field

The utility model relates to the field of medical equipment, in particular to a double-balloon uterus oviduct radiography catheter which is simultaneously suitable for uterine cavity catheterization radiography and selective oviduct radiography.

Background

Infertility is defined as the absence of contraception by married couples, who have not been pregnant for the 12 months of the day. In the middle of 15-44 year old women, the incidence is about 9% (5-15%). The factors causing female infertility mainly comprise fallopian tube factors, pelvic factors, ovarian factors, immune factors, mental factors, uterine factors and the like, but the fallopian tube factors are the most common reasons of female infertility, and the infertility caused by fallopian tube blockage, blockage and poor fallopian tube function accounts for about 25-50%. Therefore, the fallopian tube patency test is an important step for female sterility test. The current imaging examination method for detecting the patency of the oviduct is X-ray oviduct iodido radiography and uterus oviduct ultrasonic radiography. The technique needs to place a tube in the uterine cavity, inject a contrast agent into the uterine cavity, the oviduct and the pelvic cavity through the catheter, and judge the pathological changes of the uterine cavity, the smoothness of the oviduct and whether pelvic cavity adhesion exists or not through the contrast development shape, the flow process and the dispersion condition after overflowing into the pelvic cavity.

The catheter used at present is mainly a Foley catheter, and only realizes radiography after uterine cavity catheterization, but can not carry out selective oviduct radiography; the major problems with Foley catheters include:

1) the catheter is made of soft material, and is difficult to be smoothly inserted into the uterine cavity for the uterine with a tighter, smaller or over-bent cervical orifice; poor operability and incapability of adjusting the direction of the pipe head; the insufficient filling volume of the balloon can cause the leakage of the contrast agent and even the deformation and the tube detachment, thereby causing the contrast failure, being not beneficial to the imaging diagnosis and needing to be placed again.

2) Uterine spasm is easily caused when the balloon is excessively inflated, the occurrence rate of countercurrent is high during radiography, and the induced abortion syndrome of a patient is obvious; the balloon has poor adaptability in uterus, the long axis of the balloon after filling is parallel to the liquid injection direction, the cervical orifice is not easy to block, and the probability of tube detachment is high; and the saccule occupies most of uterine cavity after being full, the pain and reaction of the patient are severe, the false positive of oviduct blockage is increased, and the uterine cavity development in the radiography state is influenced.

3) The far-end tube head of the Foley catheter is too long and has a columnar structure of 1.5cm-2.0cm, and the tube head is often inserted into one uterine horn, so that the uterine horn is spasmodic, and the near-end obstruction artifact of the fallopian tube is caused.

4) The cavity and opening arrangement of the conduit: and the single liquid outlet is easy to be blocked by mucus, intima debris and the like when the liquid in the uterine cavity is pumped back.

Because the traditional Foley catheter cannot perform selective tubal angiography, no good method is provided in the field for improving the direction change of the built-in catheter in the body to position the uterine horn or the opening of the fallopian tube, and no catheter can simultaneously realize uterine cavity tubal angiography and selective tubal angiography, and the ultrasonic angiography of the fallopian tube of a patient after the uterine cavity angiography needs to use other instruments additionally, so that the operation difficulty of an operator is improved.

Disclosure of Invention

The purpose of the invention is as follows: the utility model aims at providing a double-sacculus uterus oviduct radiography conduit which can reduce the uterine horn spasm of a patient and is simultaneously suitable for uterine cavity catheterization radiography and selective oviduct radiography.

The technical scheme is as follows: in order to achieve the above object, the utility model discloses a double-balloon uterus oviduct angiography catheter, which comprises a sheath tube, a first balloon, a second balloon and a guide wire, wherein the first balloon and the second balloon are sequentially arranged on the sheath tube along the liquid injection direction, the sheath tube forms an extension part at the far end of the second balloon, and the length of the extension part is not more than the maximum filling diameter of the second balloon; the sheath lumen comprises a first chamber for passage of a guidewire, the first chamber forming at least one first opening at a distal end of the sheath; a first liquid injection channel communicated with the first balloon, a second liquid injection channel communicated with the second balloon and a third liquid injection channel are arranged on the inner wall of the sheath tube; the near ends of the first liquid injection channel and the second liquid injection channel are respectively provided with a first liquid injection conduit and a second liquid injection conduit; and at least one second opening is arranged on the wall of the sheath tube between the first balloon and the second balloon, the second opening is communicated with a third liquid injection channel, and a third liquid injection catheter is arranged at the near end of the third liquid injection channel.

The first cavity, the first liquid injection channel, the second liquid injection channel and the third liquid injection channel are arranged independently and are not communicated with each other. The number of the first openings can be 1, and the first openings are positioned on the distal end face of the sheath; the first openings can be arranged in a plurality of numbers, and are symmetrically arranged on the side surface of the distal end part of the sheath tube, and the arrangement mode is more favorable for avoiding blockage of intrauterine mucus or intimal debris; the first opening may also adopt a combination of the two designs. The first opening can be used for injecting contrast medium or for pumping intrauterine liquid, if necessary in combination with a guide wire, depending on the use scenario.

It should be noted here that the "proximal end" of the present invention refers to the end of the radiography conduit close to the operator when in use, the "distal end" refers to the end of the radiography conduit close to the patient when in use, and is also the direction of injecting the flushing fluid and the contrast medium in the operation of the operator, and under the condition of no special description, the direction of the "distal end" is the same as the "fluid injection direction".

It should be noted here that the "maximum filling" state of the present invention is not the state when the balloon is filled to the rupture critical value, but the "desired state" when the balloon is filled to a certain volume in the patient is provided by the inventor, and the balloon has reliable safety in the "maximum filling" state and will not rupture in the patient by reasonably selecting the material, thickness and preparation process of the first balloon and the second balloon. Under the 'expected volume', the first balloon can stably realize the blockage of the uterine orifice, prevent the leakage of contrast medium when the uterine cavity is provided with a tube for radiography, and simultaneously, the volume of the first balloon is not overlarge to influence the imaging diagnosis; under the 'expected volume', the second balloon can stably realize the blockage of the oviduct orifice and prevent the leakage of the contrast agent during selective oviduct radiography.

Based on the description of the maximum filling, the utility model optimally defines the filling volume of the saccule, and in order to control uterine horn spasm caused by overlong front end of the sheath tube, the length of the extension part is not more than the maximum filling diameter of the second saccule; more preferably, the length of the extension is no greater than the maximum filling radius of the second balloon.

The utility model discloses can inject the contrast medium into first cavity, inject palace chamber or oviduct chamber into from first open end, be applicable to the condition that the sheath pipe does not need the seal wire to guide. If the contrast agent is required to be guided by matching with a guide wire, a third injection channel can be selected for injecting the contrast agent, and the contrast agent is injected into the uterine cavity through the second opening during the uterine cavity radiography. As an optimized implementation manner of the present invention, the third liquid injection channel further extends to the front end to form a third opening on the surface of the extension portion, so that the contrast agent can be injected into the uterine cavity and the fallopian tube cavity (or uterine horn) simultaneously in a necessary scene.

In order to reduce the possibility of spasm of the proximal segment of the fallopian tube (uterine horn spasm), and to facilitate access to the ostium of the fallopian tube, the extension comprises a cone or wedge that tapers towards the direction of injection and is formed at the distal end, and the distal end of the cone or wedge is provided with at least one first opening. Preferably, a wedge-shaped body is adopted, the circular first opening can be expanded into an oval shape, and the expansion of the aperture is beneficial to flushing and blockage prevention.

The utility model discloses a third notes liquid channel is used for injecting into the contrast medium, and the third notes liquid channel is located between first sacculus and the second sacculus at the second opening that sheath pipe wall formed, just the interval of first sacculus and second sacculus is not less than the biggest full radius of first sacculus, can guarantee like this that the contrast medium can not block when palace chamber puts the pipe radiography of injection into. And when the selective oviduct radiography is carried out, the contrast agent is injected through the hollow guide wire, and is injected into the oviduct from the first opening, so that the contrast agent is distinguished from the uterine cavity tube placing radiography, the liquid injection pressure of the oviduct radiography is favorably increased, and the dredging efficiency of oviduct blockage is improved.

As the preferred embodiment of the utility model, the maximum filling volume of first sacculus is 3 ~ 10ml, and the preferred maximum filling volume is 4-5 ml. The maximum filling volume of the second balloon is 1-5 ml, and the maximum filling volume of the second balloon is different according to the filling mode of the second balloon and the material selected for the second balloon. The utility model discloses to be used for the volume of the first sacculus of uterus mouth embolism to reduce as far as possible, under the prerequisite that does not influence the embolism leakproofness, reduce the influence that sufficient back sacculus judged the cause to the image.

First sacculus, second sacculus after full shape independently select cylindrical, oblate cylindrical, spherical, oblate spherical, oval, oblate ellipsoid, fusiform, oblate fusiform, back taper, flat back taper's arbitrary one kind or two kinds of combination separately. The first sacculus is more suitable for the shape of the uterine cavity by adopting the flat shape, and the effect of sealing the inner opening of the cervix by expanding the sacculus is better. When the shape of the second saccule after filling comprises any one of an oblate sphere, an ellipsoid, an oblate ellipsoid, a fusiform and a oblate fusiform, the long axis of the second saccule is flat with the tube sheath, so that the area presented in imaging is reduced, and the blocking effect of the orifice of the ovum transfusion tube is improved.

In order to enable the first balloon and the second balloon to be in special shapes such as oblate spheres, fusiform shapes, oblate fusiform shapes and inverted cones after being inflated, the thicknesses of different positions of the balloons are controlled during manufacturing of the balloons. For example, "back taper" is as the utility model discloses a preferred embodiment of first sacculus, and the lateral wall thickness of its main aspects is less than the lateral wall of tip to design the round strengthening rib at the main aspects, improve the shaping effect when full.

As a further optimization of the utility model, the first sacculus can further improve the shaping effect through a plurality of archs that are weft distribution in the surface design, still is favorable to improving cervical orifice embolism effect, prevents that the contrast medium from leaking.

The protrusions distributed in the latitude lines are selected from a plurality of point-shaped protrusions which are arranged along the dimension direction, or a circle of outward convex continuous or discontinuous annular lines are formed along the latitude direction, or a circle of outward convex corrugated lines are formed along the latitude direction. The design of the lines increases the friction force between the saccule and the inner wall of the uterus, and reduces the risk of tube detachment.

In order to realize that the sheath tube is deviated from and is positioned to the oviduct orifice in the uterine cavity, the utility model discloses a make first sacculus and/or second sacculus take place "asymmetric" and be full, the sheath tube should have at least one section to take place the bending easily simultaneously, changes the orientation of second sacculus and extension. In particular, at least the proximal side of the sheath or the interior of the first balloon is replaced by a flexible section, and the first balloon is inflated with only a portion of the flexible section, or the first balloon is inflated with the flexible section to form a larger primary balloon and at least one smaller secondary balloon, respectively. If "asymmetric" filling of the second balloon is desired, the flexible portion should also include a proximal side of the second balloon and/or a corresponding sheath portion inside the second balloon.

In a preferred embodiment, the first liquid injection pipeline forms a fourth opening on the outer surface of the sheath, and the second liquid injection pipeline forms one or more fifth openings on the outer surface of the sheath; wherein the first balloon is mostly fixed on the back side and the periphery of the sheath tube relative to the fourth opening in a bonding mode, and when the first balloon is inflated, only the part of the first balloon corresponding to the fourth opening is inflated. When the first balloon reaches the maximum filling state, the uterine orifice is completely blocked, and the sheath is extruded by the first balloon to deflect to one side. The preparation process of the mode has low requirement, and the sheath part where the first balloon is located is not expanded, so that the contrast agent is likely to leak. The sheath should set up one end flexible portion in the near-end of first sacculus, does benefit to the deflection of sheath.

As another preferred embodiment, the first liquid injection pipeline forms a plurality of fourth openings, preferably 2 to 3, on the outer surface of the sheath, the sheath passes through the first balloon, and is not centrosymmetric, but is eccentrically designed, so that a larger main balloon body and at least one smaller secondary balloon body are respectively formed when the balloon is inflated, the thickness of the balloon wall of the main balloon body is smaller, and the inflation degree is large; the secondary capsule body has large capsule wall thickness and small filling degree. This kind of mode need not fix the bonding of sacculus inner wall on the sheath pipe, but the sheath pipe is equipped with one section flexible portion in the inside of first sacculus, and when first sacculus took place "asymmetric filling", the sheath pipe in the first sacculus automatically takes place to deflect.

In order to facilitate the operator to know the degree of balloon liquid injection, the first liquid injection catheter and the second liquid injection catheter are respectively provided with a tee joint connected with a hydraulic indicating device. The hydraulic indicating device is selected from any one of a liquid column type pressure gauge, a spring tube pressure gauge and a pressure sensor (a piezoresistive type or a capacitive type). As a preferred embodiment, a spring tube pressure gauge with an indication mark can be selected, hydraulic measurement is converted into measurement of the deformation length of the spring tube, the larger the pressure is, the larger the deformation degree is represented, an operator can observe the pressure of the uterine cavity and the fallopian tube cavity through the indication mark, and a diagnosis basis is provided for patency diagnosis of the fallopian tube.

The whole or part of sheath pipe make for arbitrary one or more materials in PP, PVC, TPE, TPU, silica gel, latex, rubber, the polytetrafluoroethylene, preferably the combination of one or more in silica gel, latex, the rubber. If the reusability of the product needs to be improved, the sheath tube not only takes plastic as a main body, but also comprises a protective layer made of polytetrafluoroethylene and other materials.

The materials of the first balloon and the second balloon include but are not limited to PP, PVC, TPE, TPU, silica gel, latex and rubber, and any one or combination of more of the above materials.

Further, the outer diameter of the sheath tube is 8-12F, the inner diameter of the sheath tube is not less than 6F, and the sheath tube is suitable for guide wires of 5F or less than 5F.

Furthermore, the surface of the sheath tube can be designed with scale marks, which is convenient for an operator to evaluate the position of the catheter during the catheter placement.

Furthermore, a marker for indicating the rotating angle or the bending direction of the sheath is arranged at the proximal end of the sheath. The marker is selected from the group consisting of, but not limited to, a color marker, a raised portion or a recessed portion at a position, for example, when the balloon is oblate, oblate fusiform, oblate inverted conical, the marker is upward indicating that the flattened surface of the balloon is parallel to the plane of the patient's body, and the direction of the thermoplastic shape memory polymer to recover its shape can be known.

The double-balloon uterus oviduct radiography catheter of the utility model can be provided with a plurality of guide wires according to the needs. Both guidewires may be made of any one of stainless steel, nitinol, polyamide (e.g., nylon), polyurethane, or a combination of both.

The first guide wire is mainly matched with a sheath tube which is mainly made of flexible materials for use, has certain toughness and is solid in design, is used for increasing the rigidity of the sheath tube and convenient for tube placement, and the length of the guide wire is ensured to be not more than a first opening when the guide wire is placed into a uterine cavity of a patient along with the sheath tube.

The second guide wire is mainly used for realizing proximal end dredging, can adopt a solid design, has the length that the front end can exceed the first opening after being placed into the sheath tube to realize the dredging function, and can be provided with a polymer coating at the front end; but when the device is used by a patient suspected of obstruction at the proximal end of the fallopian tube, the guide wire can be placed in the device for diagnosing unilateral obstruction after radiography.

The length of the third guide wire is ensured to ensure that the front end of the guide wire exceeds the first opening after the third guide wire is placed, so that the third guide wire has stronger dredging function and mechanical separation function, and is used for injecting contrast agent into the oviduct to carry out selective unilateral oviduct radiography. The guide wire is thus provided with a hollow second lumen

To above-mentioned technical scheme, the utility model discloses can provide the multi-functional radiography pipe of different categories, different specifications, the different seal wires of outfit, the art person chooses for use according to the in-service use condition.

The product of the utility model is suitable for Hysterosalpingography (HSG) and Selective Salpingography (SSG), and a catheter is put into the vagina for diagnosis and examination at the abdomen; the utility model discloses still be applicable to uterus oviduct ultrasonic contrast (Hystero-contrast sonograph, HyCoSy), HyCoSy has characteristics such as nonradiative, but three-dimensional formation of image developments show contrast process, contrast medium metabolism are fast, but puts into traditional pipe and diagnosis inspection and all need pass through the vagina, influences each other easily. The sheath pipe of the utility model adopts flexible design, controls the deformation of the whole uterine cavity inner catheter, and is more favorable for ultrasonic examination compared with the prior product.

The utility model provides a double-functional catheter for uterine cavity catheterization radiography and selective oviduct radiography through the design of double balloons. The catheter is used for uterine cavity lesion, fallopian tube patency detection, selective fallopian tube radiography and dredging treatment after a proximal fallopian tube is blocked, and the catheter is not designed at present.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a schematic view of the selective oviduct angiographic catheterization of example 1;

FIG. 3 is a schematic cross-sectional view A-A of the catheter of example 1 after insertion in combination with a guidewire;

fig. 4 is an illustration of intrauterine contrast placement in embodiment 2 of the present invention;

fig. 5 is a schematic structural diagram of embodiment 3 of the present invention;

fig. 6 is a schematic structural view of embodiment 4 of the present invention.

Detailed Description

The present invention will be further explained with reference to the following examples and drawings.

Example 1

As shown in fig. 1 and fig. 2, the present embodiment provides a double-balloon uterine salpingography catheter with an eccentric posterior balloon design, which includes a sheath 110, a first balloon 212 (anterior balloon), a second balloon 214 (posterior balloon), a guide wire 510, a first injection catheter 412, a second injection catheter 414, and a third injection catheter 416.

Further referring to fig. 3, the sheath tube 110 is made of latex material, and has a length of 30-35cm, an outer diameter of 8F and an inner diameter of 6F. The sheath 110 is coated with a teflon protective layer 112. The sheath 110 forms a cylindrical extension 120 at the forward end thereof, the extension 120 preferably having a length no greater than the maximum filling radius of the second balloon 214. The front end of the extension 114 forms a first opening 311, which communicates with the sheath lumen 312. The sheath 110 has a second opening 313 on the wall between the first balloon 212 and the second balloon 214, a fourth opening 315 on the wall inside the first balloon 212, and a fifth opening 317 on the wall inside the second balloon 214.

The sheath tube 110 has a third liquid injection channel 314 connected to the second opening 313, a first liquid injection channel 316 for injecting liquid into the first balloon 212, and a second liquid injection channel 318 for injecting liquid into the second balloon 214. The sheath is at least replaced by a section of flexible portion at the proximal end side of the first sacculus or inside the first sacculus, and the flexible portion is made of flexible latex or silica gel. The guide wire 510 is a 5F guide wire, and is made of a nickel-titanium alloy guide core 512 and a stainless steel winding 514, and the front end of the guide wire is designed with a rubber coating layer.

In this embodiment, the first balloon 212 has a flat, inverted conical shape, the second balloon 214 has a fusiform shape, and the guide wire 510 is used to guide the sheath 110 into the uterine cavity of the patient. The catheter provided by the embodiment can realize uterine cavity catheterization radiography, and the inverted-cone-shaped first balloon 212 is attached to the shape of the inner wall of the uterine cavity, so that the leakage of a contrast agent can be effectively prevented.

Generally, the maximum filling volume of the first balloon 212 is 4-5ml and the maximum filling volume of the second balloon 214 is 1-5 ml. The first balloon 212 can further improve the forming effect by designing a plurality of protrusions distributed in a weft manner on the outer surface, and is also favorable for improving the cervical orifice blocking effect and preventing the leakage of the contrast agent.

Example 2

As shown in fig. 4, this embodiment is modified from embodiment 1 in that the first balloon 222 is also eccentrically disposed, but a portion thereof is adhesively secured to the sheath 120, and only the remaining portion thereof is inflated. When it reaches its maximum filling state, the first balloon 222 completely obstructs the ostium a, and the sheath is squeezed aside by the first balloon and deflected. In the embodiment, the part of the sheath tube wall from the first balloon to the far end is made of flexible rubber material.

This embodiment has also demonstrated the common diagnosis operation of uterine cavity catheterization radiography, and fig. 4 demonstrates that the operative person is used for blockking up palace ostium A with the first sacculus of filling after the pipe is put into patient's uterine cavity to inject the contrast medium into third notes liquid channel, from the sufficient diffusion of second opening 323 to uterine cavity, the utility model discloses locate first sacculus 222 and second sacculus 224 with second opening 323 between, also consider if set up contrast medium export (second opening 323) in the distal end, often can be prior to a side uterine horn diffusion contrast medium, reduced the diagnostic efficiency of iconography, and take place the misdiagnosis easily. By tracing the filling flow path of the contrast agent through imaging, the patient can judge that the oviduct blockage is possible on the right uterine horn B when the contrast agent is found not to have signs of diffusion or flow. At this time, the operator further adjusts the sheath 120 in the distal direction, fills the second balloon 224 for fixation, and then inserts a dredging guide wire for dredging, or inserts a hollow guide wire 520 capable of injecting a contrast agent for single-side salpingography. These operations all can be based on the utility model discloses a same pipe is realized, need not change the pipe, and the art person only need according to the operation select suitable seal wire, in good time sufficient specific sacculus can.

Example 3

As shown in fig. 5, this example illustrates other embodiments where the first balloon is eccentrically disposed (asymmetrically inflated). The first balloon 232 is in the shape of an oblate ellipsoid, the first long axis and the second long axis of the first balloon are perpendicular to the liquid injection direction, and the first balloon and the second balloon are flat when being inflated, so that the sealing performance is improved, and the leakage of the contrast agent is prevented. The second balloon 234 is fusiform, and the long axis of the second balloon is parallel to the injection direction, so that the sealing performance of the oviduct orifice is improved.

In this embodiment, the sheath 130 is not centrosymmetric when passing through the first balloon 232, but is eccentrically designed, so that a larger main balloon and a smaller secondary balloon are formed when the balloons are inflated, and the main balloon is inflated to a large extent; the secondary sac has a low degree of filling.

The embodiment further provides two second openings 333 which are communicated with the same third liquid injection channel, the third liquid injection channel can be designed to be wider, and the two second openings are combined, so that the injection efficiency of the contrast medium in the uterine cavity is improved.

This embodiment also provides a further improvement of the front end extension. The extension is a wedge 331, and the forward end of the sheath wall is rounded. The extension portion may be made of a flexible material, such as latex, rubber, silicone, etc., to help reduce the possibility of intrauterine cramps.

Example 4

As shown in fig. 6, this example illustrates yet another embodiment in which the first balloon is eccentrically disposed (asymmetrically inflated). The first balloon 242 has an inverted conical shape in which one side is adhesively fixed to the sheath and only the other side can be inflated, and the second balloon 244 has a combined inverted conical and cylindrical shape similar to a bullet shape. Meanwhile, the sheath 140 of the embodiment is made of TPU, which is harder than rubber, silica gel and other materials, but has a hardness lower than that of PP; the extension of this embodiment is a cone 341. The sheath 140 of this embodiment is harder, is convenient for dredge and puts into, also can cooperate the seal wire to dredge because of its outstanding moulding ability.

In the embodiment, the third liquid injection channel further extends to the distal opening, so that the contrast agent can be injected into the middle part and the uterine horn of the uterine cavity simultaneously, and the diagnosis efficiency of contrast agent filling of the uterine cavity intubation tube and the fluidity of the contrast agent at the single-side uterine horn can be improved.

As shown in fig. 6, the direction of the front end of the catheter is adjusted to correspond to the direction of the uterine horn while the first balloon is maintained inflated, and then the second balloon is gradually inflated. Preferably, the maximum filling volume of the first balloon is 4-5ml, and the maximum filling volume of the second balloon is 2-3 ml.

Example 5

As other embodiments of the utility model, for the convenience of the degree that the liquid was annotated to the sacculus of operator understanding, first annotate liquid pipe and second and annotate the liquid pipe and be equipped with a tee bend of connecting hydraulic pressure indicating device respectively. The hydraulic indicating device can be any one of a liquid column type pressure gauge, a spring tube pressure gauge and a pressure sensor. In the embodiment, the spring tube pressure gauge with red, yellow and green indication marks is adopted to convert the hydraulic measurement into the measurement of the deformation length of the spring tube, when the pressure is low, the deformation degree of the spring tube is low, and an operator can only see the green indication marks; along with the pressure is larger and larger, the deformation degree is larger, and the red color can be gradually seen through the indicating mark, so that an operator can observe the pressure of the uterine cavity and the fallopian tube cavity, and a diagnosis basis is provided for the patency diagnosis of the fallopian tube.

Example 6

As other embodiments of the utility model, the surface of the sheath tube can be designed with scale marks, which is convenient for the operator to evaluate the position of the catheter and the direction of the saccule when the catheter is placed. The marker may be a color marker, a raised portion or a recessed portion at a location, such as when the balloon is oblate, oblate fusiform, or oblate inverted conical, the marker is upward indicating that the flattened surface of the balloon is parallel to the plane of the patient's body, and the direction in which the thermoplastic shape memory polymer recovers its shape.

Claims

1. The utility model provides a two sacculus uterus oviduct radiography pipe, includes sheath pipe, first sacculus, second sacculus and seal wire, first sacculus and second sacculus are located in proper order along annotating the liquid direction on the sheath pipe, its characterized in that: the sheath forms an extension at the distal end of the second balloon, the extension having a length no greater than the maximum filling diameter of the second balloon;

the sheath lumen comprises a first chamber for passage of a guidewire, the first chamber forming at least one first opening at a distal end of the sheath; a first liquid injection channel communicated with the first balloon, a second liquid injection channel communicated with the second balloon and a third liquid injection channel are arranged on the inner wall of the sheath tube; the near ends of the first liquid injection channel and the second liquid injection channel are respectively provided with a first liquid injection conduit and a second liquid injection conduit; the sheath tube wall between the first sacculus and the second sacculus is provided with at least one second opening, the second opening is communicated with a third liquid injection channel, the near end of the third liquid injection channel is provided with a third liquid injection catheter, and the third liquid injection channel further extends to the front end to form a third opening on the surface of the extension part.

2. The double-balloon uterotubal angiography catheter of claim 1, wherein: the extension part comprises a section of conical body or wedge-shaped body which is tapered towards the injection direction and is formed at the far end, and the far end of the conical body or wedge-shaped body is provided with at least one first opening.

3. The double-balloon uterotubal angiography catheter of claim 2, wherein: the distance between the first balloon and the second balloon is not less than the maximum filling radius of the first balloon.

4. A double-balloon uterotubal angiography catheter according to claim 3, wherein: the maximum filling volume of the first balloon is 3-10 ml, and the maximum filling volume of the second balloon is 1-5 ml.

5. The double-balloon uterine tubal angiography catheter according to any one of claims 1 to 4, wherein: the inflated shapes of the first balloon and the second balloon are respectively and independently selected from any one or a combination of two of a cylinder, an oblate cylinder, a sphere, an oblate sphere, an ellipse, an oblate ellipsoid, a fusiform, an oblate fusiform, an inverted cone and an oblate inverted cone.

6. The double-balloon uterotubal angiography catheter of claim 5, wherein: the outer surface of the first balloon is provided with a plurality of protrusions distributed in a weft manner.

7. The double-balloon uterotubal angiography catheter of claim 5, wherein: at least the proximal side of the sheath or the interior of the first balloon is replaced by a length of flexible portion.

8. The double-balloon uterotubal angiography catheter of claim 7, wherein: the first liquid injection pipeline forms one or more fourth openings on the outer surface of the sheath, the second liquid injection pipeline forms one or more fifth openings on the outer surface of the sheath, the first balloon is fixedly bonded or thermally sealed around the one or more fourth openings, and the second balloon is fixedly bonded or thermally sealed around the one or more fifth openings.

9. The double-balloon uterotubal angiography catheter of claim 8, wherein: and the first liquid injection conduit and the second liquid injection conduit are respectively provided with a tee joint connected with a hydraulic indicating device.

10. The double-balloon uterotubal angiography catheter of claim 1, wherein: the outer diameter of the sheath tube is 8-12F, and the inner diameter of the sheath tube is not less than 6F.