A hysterosalpingography recanalization device

Abstract

The application discloses an oviduct radiography recanalization device, which comprises a double-cavity tube, a guide tube and a guide wire, wherein the double-cavity tube is provided with a liquid injection cavity and a guide cavity, a balloon is arranged on the outer wall of the double-cavity tube and is communicated with the liquid injection cavity, the guide tube is movably arranged in the guide cavity, the guide wire is movably arranged in the guide tube and the distal end of the guide wire can be extended from the distal end of the guide tube, and the recanalization catheter is slidably sleeved outside the guide wire and is provided with a preformed deformation section, wherein the deformation section comprises a first arc-shaped section and a second arc-shaped section.

Description

Technical Field

[0001] This invention relates to a fallopian tube recanalization device, belonging to the field of medical device technology. Background Technology

[0002] Tubal infertility is one of the main causes of female infertility. Among the treatment methods for infertility caused by tubal factors, tubal interventional therapy, as a safe, high-success-rate, simple, and non-invasive treatment method, has been widely used in clinical surgery. Specific procedures include selective hysterosalpingography (SSG), tubal recanalization (FTR), and tubal embolization (FTE).

[0003] During fallopian tube recanalization surgery, the doctor uses a guidewire to clear the narrowed or adhered tubal opening. Then, medication is injected directly into the fallopian tube opening, increasing the pressure within the tube and causing it to dilate. The force of the medication also flushes out mucus, debris, and necrotic material produced by inflammation within the fallopian tube, opening up mildly adhered fimbriae and improving and restoring their ability to pick up the egg.

[0004] Chinese utility model application number 201920064315.0 discloses a fallopian tube recanalization device based on hysterosalpingography (HSG). The device includes an HSG catheter, with a recanalization tube track fixedly connected to the inner wall of the catheter near its center. A recanalization guidewire is movably threaded through the center of the recanalization tube track. A nut is fixedly connected to the inner wall of the HSG catheter near its bottom, and a screw is threaded to the center of the nut. The top of the screw is fixedly connected to the bottom of the recanalization guidewire, which has a hemispherical top. Fluid outlets are equidistantly spaced on the top of the recanalization tube. This utility model, through the connection between the recanalization guidewire and the screw, combined with the medication inlet on the handle and the fluid outlet at the top of the recanalization guidewire, allows for medication application to the affected area during guidewire withdrawal after recanalization, avoiding the need to reinsert a catheter and reducing mechanical damage to the patient. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a fallopian tube recanalization device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A fallopian tube recanalization device, comprising:

[0008] A dual-lumen tube, comprising an injection chamber and a guide chamber, wherein a balloon is provided on the outer wall of the dual-lumen tube and the balloon is connected to the injection chamber;

[0009] A guide tube is movably inserted into the guide cavity;

[0010] A guidewire is movably inserted inside the guide tube, and the distal end of the guidewire can extend out from the distal end of the guide tube.

[0011] A recanalization catheter is slidably sleeved outside the guidewire. The recanalization catheter includes an infeed section, a deformation section, and a head section connected in sequence. The stiffness of the infeed section is greater than the stiffness of the deformation section, which is greater than the stiffness of the head section.

[0012] The feeding section is straight, the proximal end of the deforming section is connected to the feeding section, and the distal end of the deforming section is connected to the head section; the deforming section is pre-formed into a predetermined shape, including an externally tangent first arc segment and a second arc segment, wherein the tangent at the proximal end of the first arc segment forms an angle with the extension line of the feeding section at a second predetermined angle.

[0013] During a fallopian tube recanalization procedure, the guiding tube is withdrawn, and a guidewire and a recanalization catheter are inserted through the double-lumen tube; or, the guidewire is left in the uterine cavity, the guiding tube and the double-lumen tube are withdrawn, and the recanalization catheter is followed into the uterine cavity along the guidewire.

[0014] Preferably, the guide tube and the recanalization tube are located in mutually perpendicular planes.

[0015] Preferably, the guiding tube is located in the sagittal plane, and the recanalization catheter is located in the coronal plane.

[0016] Preferably, the recanalization catheter includes an insertion section, a deformable section, and a head section connected in sequence. The insertion section is straight, the proximal end of the deformable section is connected to the insertion section, and the distal end of the deformable section is connected to the head section.

[0017] The tangent at the proximal end of the first arc segment forms an angle with the extension of the feed segment at a second predetermined angle.

[0018] Preferably, the inner diameter of the head section is such that a guidewire of 0.032 inches can pass through.

[0019] Preferably, the second set angle is 25° to 60°.

[0020] Preferably, the second arc segment is connected to the head segment, and the tangent of the second arc segment forms an angle with the extension of the feed segment at a third predetermined angle.

[0021] Preferably, the third set angle is 90° to 100°.

[0022] Preferably, the radius of the first arc segment is 45cm to 55cm.

[0023] Preferably, the radius of the second arc segment is 16cm to 28cm.

[0024] Preferably, the second arc-shaped segment and the head segment are located on both sides of the extension line of the feed segment.

[0025] Preferably, the material of the deforming section has a lower elasticity than the head section but a higher elasticity than the feeding section.

[0026] Compared with the prior art, the present invention has the following technical effects:

[0027] 1) A set of fallopian tube imaging and recanalization devices can be used to perform both fallopian tube imaging and fallopian tube recanalization. Both procedures can be completed in one surgery, greatly improving treatment efficiency.

[0028] 2) The design utilizes two support points to improve the accuracy of entry into the fallopian tubes and enhance the ability to overcome the resistance of blocked fallopian tubes.

[0029] 3) It has high compatibility with the uterine cavity structure, making the operation convenient and efficient. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the fallopian tube recanalization device under hysterosalpingography (HSG) procedure;

[0031] Figure 2 This is a schematic diagram of the structure after the guidewire is withdrawn during angiography.

[0032] Figure 3 This is a schematic diagram of the cross-sectional structure of a double-lumen tube;

[0033] Figure 4 This is a schematic diagram of the guide tube structure;

[0034] Figure 5 This is a schematic diagram of the fallopian tube recanalization device under recanalization operation;

[0035] Figure 6 This is a schematic diagram of the recanalization catheter;

[0036] Figure 7(a) is a schematic diagram of the fallopian tube recanalization device inserted into the uterine cavity;

[0037] Figure 7(b) is a schematic diagram of the fallopian tube recanalization device being inserted into the fallopian tube. Detailed Implementation

[0038] The technical content of the present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0039] Please refer to Figures 1 to 6As shown in the figure, an embodiment of the present invention provides a fallopian tube recanalization device, which includes at least: a double-lumen tube 1, a guiding tube 2, a recanalization catheter 3, a guide wire 4, and a balloon 5. The double-lumen tube 1, the guiding tube 2, the guide wire 4, and the balloon 5 can be used together for fallopian tube imaging; the double-lumen tube 1, the recanalization catheter 3, the guide wire 4, and the balloon 5 can be used together for fallopian tube recanalization.

[0040] Reference Figure 3 As shown, the double-lumen tube 1 has an injection chamber 11 and a guiding chamber 12. A balloon 5 is provided on the outer wall 1-2 cm from the front end of the double-lumen tube 1. The balloon 5 is connected to the injection chamber 11. The balloon 5 expands or contracts around the double-lumen tube 1. After expansion, the diameter of the balloon is 1-1.5 cm. The purpose of this design is to center the balloon 5 at the internal os of the cervix, so as not to block the fallopian tube opening at the uterine corner and misdiagnose unilateral fallopian tube obstruction. The opening of the inner end of the double-lumen tube is located at the center of the lower corner of the triangular uterus, which facilitates the operation of the guide wire 4 and the recanalization catheter 3 during fallopian tube recanalization.

[0041] The guide tube 2 is movably inserted into the guide cavity 12 of the double-lumen tube. In conjunction with the guide wire 4, it can pass through the cervical canal to enter the designated position in the uterine cavity under natural conditions. The 3-5 cm anterior section of the guide tube 2 is naturally curved at about 30 degrees. The insertion direction can be adjusted when the uterus is tilted forward, backward, or laterally. The semi-circular smooth surface at the front end of the guide tube 2 prevents the double-lumen tube from damaging the endometrium. The combination of the double-lumen tube, the guide tube, and the guide wire can enter the uterine cavity through the cervix under natural conditions. This avoids cervical damage caused by cervical forceps clamping the cervix and avoids the harm caused to the patient by repeated dilation and traction of the cervical canal.

[0042] Guide wire 4 is movably inserted into the double-lumen tube 1, the guiding tube 2, and the recanalization catheter 3. Guide wire 4 can guide the guiding tube 2 forward and help the recanalization catheter 3 enter the uterine horn to find the fallopian tube opening. Guide wire 4 can penetrate deep into the entire naturally curved fallopian tube to open and dilate the fallopian tube.

[0043] The recanalization catheter 3 can be sleeved outside the guidewire 4 and slide along the guidewire 4. The recanalization catheter 3 can slide within the guide lumen 12 of the double-lumen tube. It has a pre-shaped deformable section 31 that matches the shape of the uterine wall. The distal end of the recanalization catheter can extend into the uterine-side starting segment of the fallopian tube. When the recanalization catheter enters the uterine cavity, the memory catheter is semi-arc-shaped. Twisting the rigid section of the catheter outside the uterus allows the catheter tip to slide easily into the uterine horn. With the help of the guidewire 4, the fallopian tube opening is quickly located. The deformable section 31 of the recanalization catheter closely adheres to the opposite uterine wall, overcoming the problem of the guidewire 4 retracting due to resistance when it enters the fallopian tube before the recanalization catheter 3. The recanalization catheter 3 is designed with two sections, soft and rigid. The section inside the uterine cavity is a soft tube, and the section outside the cervix is ​​a rigid tube. When the rigid section of the recanalization catheter is twisted, the tip of the soft section of the recanalization catheter can be accurately and controllably changed direction, so that the catheter tip presses against the fallopian tube opening and can partially enter the uterine-side starting segment of the fallopian tube.

[0044] In one embodiment of the present invention, the use of a double-lumen tube 1, a guiding tube 2, a guidewire 4, and a balloon 5 enables hysterosalpingography (HSG) (the specific operation steps will be described in detail later). Simultaneously, when the fallopian tubes are blocked, the use of a double-lumen tube 1, a recanalization catheter 3, a guidewire 4, and a balloon 5 enables recanalization (the specific operation steps will be described in detail later). Therefore, a single set of HSG recanalization devices can perform both HSG and fallopian tube recanalization, completing the entire procedure in a single surgery, improving treatment efficiency and reducing the psychological burden on patients.

[0045] The following describes in detail the structural composition of each component in this fallopian tube recanalization device:

[0046] Reference Figure 4 As shown, preferably, the guide tube 2 includes a bent head 21 and a main body 22. The bent head 21 is located at one end of the main body 22, with a length of approximately 3-5 cm, and the extended line of the bent head 21 and the main body 22 forms an angle α of a first predetermined angle. As an example, in this embodiment, the first predetermined angle α is 24°-40°, more preferably 28-35°, and in one embodiment of the present invention, it is 30°. This allows the bent head 21 of the guide tube 2 to enter the fallopian tube 10 at an optimal angle, reducing the obstruction to the movement of the guide tube 2; at the same time, the specific lengths of the bent head 21 and the main body 22 can be adaptively designed as needed, and are not specifically limited here.

[0047] Reference Figure 5 , Figure 6 As shown in Figures 7(a) and 7(b), preferably, the recanalization catheter 3 includes an insertion section 30, a deformation section 31, and a head section 32 connected in sequence. As shown in Figure 7(a), the plane containing the guide tube 2 is the sagittal plane; as shown in Figure 7(b), the plane containing the recanalization catheter 3 is the coronal plane. In other words, the planes containing the guide tube 2 and the recanalization catheter 3 are perpendicular to each other.

[0048] The feed section 30 has the highest rigidity and is typically made of stainless steel. The head section 32 has the lowest rigidity, and the deformation section 31 has moderate rigidity (preferably made of Pebax series PE plastic). In other words, the material of the deformation section has less elasticity than the head section but more elasticity than the feed section. Both the feed section 30 and the head section 32 are straight; the deformation section 31 is pre-formed.

[0049] Furthermore, the deformable segment 31 includes a straight segment 310 and two externally tangent first arcuate segments 311 and second arcuate segments 312. The first end of the straight segment 310 is connected to the feeding segment 30 (e.g., fitted onto a portion of the feeding segment 30), and the second end of the straight segment 310 is connected to the first arcuate segment 311. Simultaneously, the tangent of the first arcuate segment 311 forms an angle β with the extension of the feeding segment 30, which is a second predetermined angle of 25° to 60° to increase the deformation range of the deformable segment. Those skilled in the art will understand that the size of this second predetermined angle is selected according to actual needs, and may be different values ​​for women in different countries or regions, for example, 25° to 35° (see [reference needed]). Figure 6 (As shown).

[0050] The second arc segment 312 is externally connected to the first arc segment 311. In other words, the center of the second arc segment 312 and the center of the first arc segment 311 are on opposite sides of the extension line of the feed segment 30. As shown in the figure, the center of the second arc segment 312 is on the side of the extension line closer to the head segment 32; the center of the first arc segment 311 is on the other side of the extension line (the side away from the head segment 32). Moreover, its maximum distance from the feed segment 30 is 15-25 cm, preferably 18-22 cm. The second arc segment 312 is located at the far end of the deformed segment 31, and the tangent of the second arc segment 312 forms an angle γ with the extension line of the feed segment 30 of a third predetermined angle (e.g., ...). Figure 6 As shown), the included angle γ of the third set angle is 90° to 100°, preferably 93°. Therefore, when the second arc-shaped segment 312 acts as a support, by rotating the insertion section of the recanalization catheter, the head segment 32 can be positioned directly towards the fallopian tube, thus facilitating smooth entry into the fallopian tube. The range of the third set angle matches the positional relationship between the uterine cavity and the fallopian tubes. The radius of the second arc-shaped segment 312 is 16 to 28 cm, preferably 23 to 27 cm, and more preferably 25 cm, which matches the size of the uterine cavity. It is understood that the radius of the deformed segment 31 of the recanalization catheter 3 can be designed to multiple values, such as 20 cm, 26 cm, or 30 cm, depending on the individual, allowing for the selection of different radii for the recanalization catheter 3.

[0051] At the distal end of the deformed segment 31 is the head segment 32. With the extension line of the feed segment 30 as a reference, the head segment 32 and the deformed segment 31 are located on opposite sides of this extension line. In one embodiment of the invention, the connection point between the head segment 32 and the arc segment 31 is approximately located along this extension line. The length of the head segment 32 is 15–22 cm, preferably 19–21 cm. The head segment 32 is generally straight and tangent to the second arc segment 312.

[0052] The deformable segment 31 with the aforementioned specifications can fit against the inner wall of the uterus. In actual use, the head segment 32 and the deformable segment 31 are inserted into the uterus, while the insertion segment 30 is located in the cervix. Because the insertion segment 30 has greater rigidity, it is very convenient to rotate and can transmit the force of rotation or insertion to the soft deformable segment 31 and the head segment 32, so that the entire recanalization catheter 3 has better following performance and can react quickly, thereby aligning with and entering the opening of the fallopian tube, thus improving the clinical use effect.

[0053] Meanwhile, it is understood that in one embodiment of the present invention, since the deformable segment 31 has a first arc-shaped segment 311 and a second arc-shaped segment 312, during the process of adjusting the direction of the head segment 32 using the feeding segment 30, the second arc-shaped segment 312 can adhere to and abut against the uterine wall (for example, as shown in circle A in Figure 7(b)), thereby receiving support from the uterine wall. Therefore, the head segment 32 can be oriented with the position where the second arc-shaped segment 312 abuts against the uterine wall (as shown in circle A in Figure 7(b)) as a support point. Furthermore, as shown in circle B in Figure 7(b), near the junction of the head segment 32 and the second arc-shaped segment 312, it will abut against the uterine wall, providing another support point (as shown in circle B in Figure 7(b)).

[0054] This dual-support design prevents the head segment 32 from rebounding when entering the fallopian tube. For cases of ectopic uterus or uterine deformation due to disease, it allows for quick and accurate location of the fallopian tube entrance, improving the convenience of recanalization procedures. Simultaneously, the support points also allow the head segment 32 to overcome resistance caused by fallopian tube blockage and smoothly enter the fallopian tube. Furthermore, the inclusion angle β of the second predetermined angle and the design of the first arc segment 311 increase the deformation range (or range of motion) of the second arc segment 312, making it more adaptable to deformed uterine cavities.

[0055] Furthermore, the radius of the second arc-shaped segment 315 is larger than that of the conventional design. Combined with the elasticity of the material of the deformed segment 31, this results in a greater resistance force of the second arc-shaped segment 315 against the uterine cavity, without damaging the uterine cavity wall due to the greater force. Moreover, the inner diameter of the entire deformed segment 31, at least the inner diameter of the head segment, is preferably a size that allows a 0.032-inch guidewire to pass through. This design allows the guidewire used in the surgical procedure to differ from the conventional 0.018-inch guidewire, improving the effectiveness, operability, and smoothness of tubal recanalization. Experiments conducted by the inventors have shown that using a 0.032-inch guidewire to recanalize the fallopian tubes significantly increases the pregnancy rate without increasing the patient's experience during tubal recanalization or the time required for the doctor to insert the head segment into the fallopian tube (provided the recanalization catheter design in this embodiment of the invention is used). It should be emphasized that the above values ​​are optimal values ​​or optimal ranges selected by the inventors through more than 2000 experiments.

[0056] Furthermore, it is understood that the included angles α (first set angle), β (second set angle), and γ (third set angle) mentioned above are all pre-forming angles, meaning these three angles are formed during product pre-forming. Referring to Figures 7(a) and 7(b), since the bend 21, deformable section 31, and head section 32 of the guide tube 2 are all flexible, when the guide tube 2 or the re-entry conduit 3 is inserted into the human body, the included angles α (first set angle), β (second set angle), and γ (third set angle) will undergo slight changes due to the compression deformation of the bend 21, deformable section 31, and head section 32, thus becoming the actual included angles α', β', and γ'.

[0057] In the above embodiments, preferably, the fallopian tube recanalization device further includes an air injection device (not shown in the figure), which is connected to the injection chamber 11 for injecting air or water into the balloon 5. Before delivering the contrast agent into the fallopian tube, 1 ml of air or water is injected into the balloon using the air injection or water injection device, thereby inflating the balloon to seal the cervical os.

[0058] In the above embodiments, preferably, the fallopian tube recanalization device further includes an injection device (not shown in the figure), which is connected to the recanalization catheter 3 for injecting anti-inflammatory medication into the fallopian tube 10 through the recanalization catheter 3. Specifically, in this embodiment, after the fallopian tube recanalization operation is performed, a mixture of anti-inflammatory and anti-adhesion medications is injected into the fallopian tube 10 through the injection device to prevent inflammation or re-adhesion of the fallopian tube 10 after it has been unblocked.

[0059] In the above embodiments, preferably, the guidewire 4 is a long, soft, hydrophilic membrane super-slippery guidewire, thereby improving the lubricity of the guidewire 4 and enabling better unblocking within the fallopian tube 10.

[0060] The procedure for hysterosalpingography (HSG) is described in detail below:

[0061] In one embodiment of the present invention, the fallopian tube recanalization procedure is as follows:

[0062] 1. The patient is placed in the lithotomy position in a supine position, and routine disinfection and draping are performed.

[0063] 2. Insert a short-handled duckbill speculum into the vagina, have the patient slightly raise her hips, open the speculum to penetrate deeper, and expose the cervix (without clamping, pulling on the cervix, or dilating the cervix).

[0064] 3. A three-piece assembly—a long, soft-tipped, hydrophilic, ultra-slippery guidewire 4 (hereinafter referred to as the guidewire), a guiding tube 2, and a double-lumen tube 1—is inserted and aligned with the external os of the cervix. Guidewire 4 is inserted first, followed slowly by the guiding tube 2. Under X-ray or ultrasound monitoring, guidewire 4 enters the uterine cavity, followed by the guiding tube 2 and double-lumen tube 1. The balloon valve of double-lumen tube 1 is inflated with 1-2 ml of air, and a small balloon of approximately 10 mm is evenly opened around the tip of double-lumen tube 1. Double-lumen tube 1 is withdrawn to the internal os of the cervix, the guiding tube 2 is withdrawn into double-lumen tube 1, and guidewire 4 is withdrawn. Contrast agent is injected through the guiding tube 2 to complete the hysterosalpingography (HSG). If tubal stenosis or occlusion is found, the following steps can be performed for tubal recanalization.

[0065] The following is a detailed description of the procedure for tubal recanalization (tubal 10 recanalization):

[0066] 1. The first step of fallopian tube recanalization can be divided into two methods. (1) Withdraw the guide tube 2, and insert the guide wire 4 and the large-bend fallopian tube recanalization catheter 3 through the double-lumen tube 1. (2) Leave the guide wire 4 in the uterine cavity, withdraw the guide tube 2 and the double-lumen tube 1, and follow the recanalization catheter 3 into the uterine cavity along the guide wire 4.

[0067] 2. Twisting the proximal end of recanalization catheter 3 will cause its distal end to automatically slide into the uterine horn. With slight adjustments, the distal opening of recanalization catheter 3 will align with the opening of fallopian tube 10. If recanalization catheter 3 is twisted again, it will align with the opening of the contralateral fallopian tube. At this point, contrast agent is injected through recanalization catheter 3: this is selective salpingography. Inserting guidewire 4 can open fallopian tube obstruction (except in cases of hydrosalpinx with fimbrial adhesions). Injected medication can be used to treat salpingitis or to embolize the fallopian tube.

[0068] 3. Align the recanalization catheter opening with the fallopian tube opening in the interstitial part of the uterus. When the guide wire 4 encounters resistance during insertion, the recanalization catheter 3 may retract. At this time, push the recanalization catheter forward slightly and hold it still. The deformed section 31 of the recanalization catheter will adhere tightly to the inner wall of the opposite side of the uterine cavity as a support point. Rotate the guide wire 4 while advancing to achieve successful recanalization (after success, anti-adhesion and anti-inflammatory treatment is required).

[0069] In summary, the fallopian tube recanalization device provided by this invention is more in line with the characteristics of human physiological structure. It utilizes the features of the uterus and uterine horns to accurately insert the guidewire, resulting in high compliance and good therapeutic effects. With a single device, both fallopian tube imaging and recanalization can be performed in one procedure, significantly improving treatment efficiency. Pregnancy rates are significantly higher after fallopian tube recanalization surgery using the device provided by this invention. Furthermore, while conventional surgeries take more than 30 minutes, the technical solution provided by this invention reduces the surgery time to less than 15 minutes.

[0070] The fallopian tube recanalization device provided by this invention has been described in detail above. Any obvious modifications made to this invention by those skilled in the art without departing from its essential content will constitute an infringement of the patent rights of this invention and will incur corresponding legal liability.

Claims

1. A fallopian tube recanalization device, characterized in that... include: A dual-lumen tube, comprising an injection chamber and a guide chamber, wherein a balloon is provided on the outer wall of the dual-lumen tube and the balloon is connected to the injection chamber; A guide tube is movably inserted into the guide cavity; A guidewire is movably inserted inside the guide tube, and the distal end of the guidewire can extend out from the distal end of the guide tube. A recanalization catheter is slidably sleeved outside the guidewire. The recanalization catheter includes an infeed section, a deformation section, and a head section connected in sequence. The stiffness of the infeed section is greater than the stiffness of the deformation section, which is greater than the stiffness of the head section. The feeding section is straight, the proximal end of the deforming section is connected to the feeding section, and the distal end of the deforming section is connected to the head section; the deforming section is pre-formed into a predetermined shape, including an externally tangent first arc segment and a second arc segment, wherein the tangent at the proximal end of the first arc segment forms an angle with the extension line of the feeding section at a second predetermined angle. During a fallopian tube recanalization procedure, the guiding tube is withdrawn, and a guidewire and a recanalization catheter are inserted through the double-lumen tube; or, the guidewire is left in the uterine cavity, the guiding tube and the double-lumen tube are withdrawn, and the recanalization catheter is followed into the uterine cavity along the guidewire.

2. The fallopian tube recanalization device as described in claim 1, characterized in that: The guide tube and the recanalization tube are located in mutually perpendicular planes.

3. The fallopian tube recanalization device as described in claim 2, characterized in that: The guiding tube is located in the sagittal plane, and the recanalization catheter is located in the coronal plane.

4. The fallopian tube recanalization device as described in claim 1, characterized in that: The inner diameter of the head section is such that a guidewire of 0.032 inches can pass through.

5. The fallopian tube recanalization device as described in claim 4, characterized in that: The second set angle is 25° to 60°.

6. The fallopian tube recanalization device as described in claim 4, characterized in that: The second arc segment is connected to the head segment, and the tangent of the second arc segment forms an angle with the extension of the feed segment at a third predetermined angle.

7. The fallopian tube recanalization device as described in claim 6, characterized in that: The third set angle is 90° to 100°.

8. The fallopian tube recanalization device as described in claim 4, characterized in that: The radius of the first arc segment is 45cm to 55cm.

9. The fallopian tube recanalization device as described in claim 8, characterized in that: The radius of the second arc segment is 16cm to 28cm.

10. The fallopian tube recanalization device as described in claim 9, characterized in that: The second arc-shaped segment and the head segment are located on both sides of the extension line of the feed segment.

11. The fallopian tube recanalization device as described in claim 9, characterized in that: The material of the deformable section has less elasticity than that of the head section but more elasticity than that of the feeding section.

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