Transluminal fallopian tube recanalization device

Abstract

An abdominal cavity transmittal tubal recanalization device, comprising two support structures, each of which comprises a balloon part and a support part arranged outside the balloon part, the support part is supported and maintained in the state of being supported, the support part is absorbable or changes with the size of the balloon part; two delivery tubes, each of which is provided with a support structure, the support structure is close to the inner wall of the delivery tube; a push-out structure, one delivery tube is provided with one push-out structure, the first end of the push-out structure is arranged in the delivery tube, the second end is arranged outside the delivery tube, the push-out structure pushes the support structure in the delivery tube out of the delivery tube; and a butt joint structure for butt joint of the two support structures, the butt joint structure can be a pulling wire arranged on the threading hole of the two support parts. The two support structures are more easily arranged through the abdominal cavity, and the butt joint structure can effectively butt joint the support structures, ensuring the final suturing effect.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to devices for fallopian tube recanalization, specifically providing a transabdominal fallopian tube recanalization device. Background Technology

[0002] Fallopian tube blockage is a significant cause of infertility in clinical practice. This blockage can be caused by tubal ligation or by pathological conditions leading to obstruction in the isthmus or ampulla of the fallopian tube. Currently, laparoscopic surgery is commonly used. Under laparoscopic visualization, the surgeon enters the abdominal cavity through the operating channel to remove the blocked portion of the fallopian tube. This creates a severed fallopian tube at both ends, which are then sutured together to restore patency and ensure the patient can conceive and allow the fertilized egg to move freely after conception.

[0003] The fallopian tubes are soft and relatively thin, making the connection between two segments extremely complicated and difficult. If the connection is not done properly, the suture may not be completed, and even after suturing, inward-growing scars can easily form at the junction of the fallopian tubes. These inward-growing scars can cause narrowing of the fallopian tube suture site. Although the fallopian tubes may be reopened, there may still be problems with the passage of fertilized eggs, reducing the probability of a normal pregnancy after the procedure.

[0004] Therefore, there is a need for an instrument that can effectively recanalize two cut fallopian tubes. This invention provides a transabdominal fallopian tube recanalization instrument. Summary of the Invention

[0005] After the fallopian tubes are severed, they tend to collapse due to their softness, requiring significant effort from medical staff to reconnect them. Furthermore, poor reconnection can easily lead to internal scarring, which reduces the chances of a normal pregnancy post-surgery. This invention utilizes a double-support structure inserted through a laparoscopic access channel to support the two fallopian tube segments. A connection structure for the double-support structure is also included to maintain the connection and stability of the two support structures after support, ensuring effective reconnection of the two fallopian tube segments. Following reconnection, the suturing procedure is completed under laparoscopic observation.

[0006] A transabdominal fallopian tube recanalization device, comprising,

[0007] There are two supporting structures, namely the first supporting structure and the second supporting structure; they are used to support the two segments of the fallopian tube. Each supporting structure includes...

[0008] balloon portion;

[0009] The support portion is located on the outside of the balloon portion. After the balloon portion supports the support portion, it is retracted, and the support portion remains in the supported state. The support portion is made of absorbable material; or, the support portion changes with the size of the balloon portion.

[0010] The inflation tube, connected to the balloon section, is used to inflate the balloon section. The end of the inflation tube is located outside the body and connected to the inflation structure.

[0011] Two delivery tubes are provided. One delivery tube contains a support structure, which is attached to the inner wall of the delivery tube. The position of the support structure and the delivery tube remains unchanged when there is no external force. The inflation tube on the support structure is introduced to the outside of the delivery tube through the delivery tube. The support structure is delivered to the two severed fallopian tube segments through the laparoscopic operating channel or other separate operating channel.

[0012] Two ejection structures are provided, one inside the conveying pipe. The first end of the ejection structure is located inside the conveying pipe, and the second end is located outside the conveying pipe. The ejection structure pushes the support structure inside the conveying pipe to the outside of the conveying pipe.

[0013] The severed fallopian tube is divided into the first segment, which is far from the uterus, and the second segment, which is connected to the uterus.

[0014] In this process, an ejection mechanism pushes the first support structure out of the delivery tube. After ejection, the delivery tube is retracted, and the balloon portion of the first support structure is inflated through the inflation tube, causing the support portion to open and thus opening the first segment of the fallopian tube. Then, the balloon portion, delivery tube, and ejection mechanism are deflated and withdrawn. The above actions are then repeated to insert the second support structure into the second segment of the fallopian tube, opening the second segment.

[0015] Furthermore, a docking structure is provided, with the first support structure having a supporting portion of one part and the second support structure having a supporting portion of the other. The docking structure includes a pull wire on the first support portion and a first threaded hole on the second support portion. The pull wire passes through the threaded hole and changes direction. The movement of the end of the pull wire causes the threaded hole to move towards the supporting portion of the first support structure until the first support structure and the supporting portion of the second support structure are docked. Alternatively, the arrangement of the pull wire on the first and second support portions can be adjusted.

[0016] Operating steps:

[0017] The severed fallopian tube is divided into the first segment, which is away from the uterus, and the second segment, which is connected to the uterus. The procedure is performed under laparoscopic guidance.

[0018] Support of the first segment of the fallopian tube: Under the observation and guidance of laparoscopy, the delivery tube containing the first support structure is introduced into the first segment of the fallopian tube. Then, under the observation of laparoscopy, the delivery tube is stopped 1-3 mm away from the edge of the first segment of the fallopian tube. The first support structure is pushed out of the delivery tube into the first segment of the fallopian tube using the push-out mechanism, ensuring that the first support structure is completely inserted into the first segment of the fallopian tube. The balloon portion of the first support structure is inflated using the inflation tube. The first segment of the fallopian tube is supported by the inflated first support structure. After inflating, the support portion maintains the supported state of the fallopian tube by itself or under the action of the balloon.

[0019] Support for the second fallopian tube: Under laparoscopic observation and guidance, a delivery tube containing the second support structure is introduced into the second fallopian tube. Then, under laparoscopic observation, the delivery tube stops 1-3 mm from the edge of the second fallopian tube. Using a push-out mechanism, the second support structure is pushed out of the delivery tube into the first fallopian tube, ensuring complete insertion. The balloon portion of the second support structure is inflated using an inflation tube, supporting the second fallopian tube. After inflation, the support portion maintains the supported state of the fallopian tube either by itself or with the help of the balloon.

[0020] Connection of two fallopian tube segments: Under laparoscopic observation, the traction suture is passed through the first suture hole and the second suture hole in sequence. The traction suture is pulled to control the first support structure to move towards the second support structure. During the process, the direction can be controlled and adjusted by the laparoscopic instruments to achieve connection between the first support structure and the second support structure; at the same time, the first fallopian tube segment supported by the two segments is connected to the second fallopian tube segment.

[0021] Fallopian tube suturing and removal of traction sutures: Under laparoscopic observation, the connected fallopian tubes are sutured, and finally the traction sutures are positioned. The traction sutures are separated from the supporting parts by cutting, and the fallopian tubes are completely sutured after separation.

[0022] The beneficial effects of this invention are:

[0023] Inserting two support structures into the two severed fallopian tubes via the laparoscopic or abdominal access channel ensures smoother placement and maintains a degree of continuity.

[0024] The two supporting structures ensure that the two segments of the fallopian tube are supported, guaranteeing the correspondence of the edges during suturing, ultimately ensuring the suturing effect and avoiding the problem of endogenous scarring caused by mismatched edges.

[0025] By setting up a support structure 1-3mm away from the edge of the fallopian tube, it can be ensured that the two segments of the fallopian tube can be effectively connected and have a small overlap when the two support structures are connected. This overlap after connection can effectively reduce the difficulty of suturing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention, in which the first support portion and the second support portion are disposed in the first segment of the fallopian tube and the second segment of the fallopian tube and are basically connected.

[0027] Figure 2 This is a schematic diagram of the structure of the present invention in a state where the first support portion and the second support portion are not fully connected;

[0028] Figure 3 This is a schematic diagram of one embodiment of the second support portion of the present invention;

[0029] Figure 4 This is a schematic diagram of one embodiment of the first support portion of the present invention;

[0030] Figure 5 A schematic diagram of the support structure with support plates provided in this invention;

[0031] Figure 6 This is a partially enlarged longitudinal cross-sectional view of the conveying pipe section with supporting structure of the present invention.

[0032] Figure 7 This is a partially enlarged longitudinal sectional view of the conveying pipe section at the junction of the support structure and the ejection structure of the present invention; Explanation of main reference numerals.

[0033] 11. First support section; 12. Second support section; 13. Support plate; 14. Balloon section; 15. Inflation tube; 161. Inclined short plate one; 162. Inclined short plate two; 2. Delivery tube; 31. Push-out tube; 32. Push-out plate; 41. Pulling wire; 42. First threading hole; 43. Second threading hole; 51. First segment of fallopian tube; 52. Second segment of fallopian tube. Detailed Implementation

[0034] Example 1

[0035] refer to Figure 1-7 A transabdominal fallopian tube recanalization device, comprising,

[0036] There are two support structures, namely a first support structure and a second support structure, used to support the two segments of the fallopian tube. Each support structure includes a balloon portion 14; a support portion, located outside the balloon portion 14, which is withdrawn after inflating the support portion; the support portion is made of absorbable material; and an inflation tube 15, connected to the balloon portion 14, used to inflate the balloon portion 14. The end of the inflation tube 15 is located outside the body and connected to the inflation structure. The method of setting the balloon to support the support portion can be selected according to the specific size of the patient's fallopian tubes to determine the diameter of the support portion.

[0037] Two delivery tubes 2 are provided. One support structure is installed inside each delivery tube 2. The support structure is close to the inner wall of the delivery tube 2. The position of the support structure and the delivery tube 2 remains unchanged when there is no external force. The inflation tube 15 on the support structure is introduced to the outside of the delivery tube 2 through the delivery tube 2. The support structure is delivered to the two cut fallopian tube segments through the laparoscopic operation channel or other separate operation channel via the delivery tube 2.

[0038] Two ejection structures are provided, one inside the conveying pipe 2. The first end of the ejection structure is located inside the conveying pipe 2, and the second end is located outside the conveying pipe 2. The ejection structure pushes the support structure inside the conveying pipe 2 out of the conveying pipe 2.

[0039] The fallopian tube at the cut point is divided into the first segment 51, which is far away from the uterus, and the second segment 52, which is connected to the uterus.

[0040] In this process, an ejection structure pushes the first support structure out of the delivery tube 2. After ejection, the delivery tube 2 is retracted, and the balloon portion 14 of the first support structure is inflated through the inflation tube 15, causing the support portion to expand and opening the first fallopian tube 51. When the support portion is a structure that maintains its expanded state after deflation, the balloon portion 14, delivery tube 2, and ejection structure are deflated and withdrawn after expansion. Alternatively, when the size of the support portion changes with the size of the balloon portion 14, the balloon remains inflated and is retained in the first fallopian tube 51 along with the support portion, while the delivery tube 2 and ejection structure are withdrawn. The inflation tube 15 remains outside the body after passing through the operating channel. The above actions are then repeated to insert the second support structure into the second fallopian tube 52, opening the second fallopian tube 52. The edge of the supporting part of the first supporting structure is 1-3 mm away from the edge of the first fallopian tube 51; the edge of the supporting part of the second supporting structure is 1-3 mm away from the edge of the second fallopian tube 52. This design ensures sufficient suturing area during subsequent docking, guaranteeing the smoothness of docking and suturing operations.

[0041] During use, two supporting structures are inserted into the two severed fallopian tube segments through the laparoscopic operating channel or other corresponding operating channels in the abdominal cavity. The arrangement of the two sets of delivery tubes 2 and their corresponding supporting and ejection structures allows for one delivery tube 2 per fallopian tube segment, without mutual interference. The entry path of the delivery tube 2 through the abdominal cavity is simple, requiring only that it meet the size requirements of the separated fallopian tube segments. This minimizes the size requirements of each structure, thus reducing the demands on the manufacturing process. The entire surgical procedure is performed under laparoscopic observation, and additional tools for steering and guiding the delivery tube 2 can be used, further simplifying the surgical operation.

[0042] When the support portion is made of absorbable material, it is a mesh-like scaffold. This type of support portion remains in the fallopian tube after the procedure and is absorbed naturally within the body.

[0043] refer to Figure 5 When the support portion changes size with the balloon portion 14, the support portion can be a mesh support or multiple support pieces 13 attached to the wall of the balloon portion 14. With this type of support portion, after the last few stitches are sutured, the balloon portion 14 is deflated, allowing the smaller support portion to be withdrawn from the fallopian tube through an unsutured small opening. Because most of the area has been sutured, even the smallest opening will allow for better suturing under soft conditions.

[0044] In a more preferred embodiment, a docking structure is further provided. The supporting portion of the first supporting structure is a first supporting portion 11, and the supporting portion of the second supporting structure is a second supporting portion 12. The docking structure includes a pull wire 41 on the first supporting portion 11 and a first threading hole 42 on the second supporting portion 12. The pull wire 41 passes through the threading hole and changes direction. The end of the pull wire 41 moves, causing the threading hole to move towards the supporting portion of the first supporting structure until the first supporting structure and the supporting portion of the second supporting structure are docked. Alternatively, the arrangement of the pull wire 41 on the first supporting portion 11 and the second supporting portion 12 can be adjusted.

[0045] Alternatively, the pull wire 41 can be introduced outside the body, and a second threading hole 43 can be provided on the first support portion 11. The pull wire 41 changes direction once through the first threading hole 42, then changes direction a second time through the second threading hole 43, and is then introduced outside the body through the operating channel. After docking, the pull wire 41 is fixed. By providing a second threading hole 43 on the first support portion 11, the relative distance between the first support portion 11 and the second support portion 12 can be made closer and more accurate.

[0046] In a more preferred embodiment, both the first threading hole 42 and the second threading hole 43 are strip-shaped holes. This arrangement ensures the accuracy of the docking position during connection and avoids fallopian tube twisting caused by improper docking. Multiple first threading holes 42 and second threading holes 43 can be provided, and docking can be performed according to the optimal docking position.

[0047] In a more preferred embodiment, the first support portion 11 is provided with a plurality of inwardly extending inclined short plates 161 arranged around its edge circumference, and absorbable bio-adhesive is provided on the inclined short plates 161; correspondingly, the second support portion 12 is provided with a plurality of outwardly extending inclined short plates 162 arranged around its edge circumference, and the inclined short plates 162 are positioned inside the inclined short plates 161 to complete the connection, and the connection is maintained by the bio-adhesive. Finally, the outer diameter of the structure formed by the inclined short plates 161 and 162 is smaller than the inner diameter of the corresponding support portion body.

[0048] In a more preferred embodiment, the first support portion 11 is the same as the second support portion 12, and an inclined short plate 161 is provided at one end of each support portion, and an inclined short plate 162 is provided in the second section. The first support portion 11 and the second support portion 12 are in opposite directions in the delivery pipe 2. This arrangement can ensure that after entering the fallopian tube section, docking is achieved through the inclined short plate 161 and the inclined short plate 162.

[0049] Or, refer to Figure 3 and Figure 4 The first support portion 11 has an inclined short plate 161 at its first end and an inclined short plate 162 at its second end; the second support portion 12 has inclined short plates 162 at both ends; when the first support portion 11 is placed inside the delivery tube 2, the inclined short plate 162 at the second end is close to the first insertion end of the delivery tube 2; this arrangement can use the outward extension and center-inclined structure of the inclined short plate 162 to guide the first support portion 11 into the fallopian tube segment, and the inclined short plate 162 of the second support portion 12 can also effectively guide it into the fallopian tube segment, reducing the difficulty of entry.

[0050] A more specific implementation method is as follows: When only one threading hole is provided, the first threading hole is provided on the inclined short plate 161 or the inclined short plate 162; when both threading holes 1 and 2 are provided, the threading holes are provided on the inclined plates 1 and 2. Because the inclined plates have a certain degree of inclination, it is easier to provide the threading holes from above, the manufacturing process is simple, and the threading action is also easier. Of course, the edge holes of the support part itself can also be used as threading holes. This arrangement can reduce the need to specially provide threading holes, and the pull wire 41 can be more easily cleaned up after use, preventing any residue.

[0051] In a more preferred embodiment, the traction wire 41 is configured as an absorbable wire. This absorbability ensures that if the traction wire 41 is not completely removed after docking, it can be absorbed within the body.

[0052] A more preferred embodiment includes an auxiliary docking structure, such as surgical forceps that enter the surgical site through two channels. After discovering that the fallopian tubes are twisted during laparoscopy, the two segments of the spread fallopian tubes are clamped by the surgical forceps to separate the docked fallopian tubes. After separation, the two segments of the fallopian tubes are rotated to ensure that they dock at the correct angle. This process involves rotation and re-docking.

[0053] A more preferred embodiment is described in reference to... Figure 7 The ejection structure is provided with an ejection plate 32 and an ejection tube 31. The ejection plate 32 is set inside the conveying tube 2. The ejection plate 32 contacts the support structure to perform the ejection function. The first end of the ejection tube 31 is connected to the ejection plate 32, and the second end is set outside the conveying tube 2. The movement of the ejection tube 31 drives the ejection plate 32 to perform its function.

[0054] The rear end of the inflation tube is connected to the inflation structure, which can be a syringe or an electric inflation structure. The rear end of the inflation tube 15 is connected to a connector with a one-way valve that allows air to enter. The connector is connected to the inflation structure to complete the inflation action. After the inflation structure is removed, the inflation state is maintained. After the connector is removed, the air is released (not shown in the figure). The entire structure is simple and reasonable.

[0055] Operating steps:

[0056] The severed fallopian tube is divided into a first segment 51, which is away from the uterus, and a second segment 52, which is connected to the uterus. The procedure is performed under laparoscopic guidance.

[0057] Support for the first segment of fallopian tube 51: Under the observation and guidance of laparoscopy, the delivery tube 2 equipped with the first support structure is introduced into the first segment of fallopian tube 51. Then, under the observation of laparoscopy, the delivery tube 2 stops when it is 1-3 mm away from the edge of the first segment of fallopian tube 51. The first support structure is pushed out from the delivery tube 2 into the first segment of fallopian tube 51 using the push-out structure, ensuring that the first support structure is completely inserted into the first segment of fallopian tube 51. The end of the first support structure that is close to the edge of the first segment of fallopian tube 51 is the first end. Finally, the distance between the end of the first end and the edge of the first segment of fallopian tube 51 is 1-3 mm. The balloon portion 14 of the first support structure is inflated using the inflation tube 15. The first segment of fallopian tube 51 is supported by the first support structure. After inflating, the support portion maintains the supported state of the fallopian tube. The delivery tube 2 and the push-out structure are withdrawn from the body. When the first support structure is the structure that maintains the supported state, the balloon portion 14 is withdrawn at the same time.

[0058] Support for the second fallopian tube 52: Under the observation and guidance of laparoscopy, the delivery tube 2 with the second support structure is introduced into the second fallopian tube 52. Then, under the observation of laparoscopy, the delivery tube 2 stops when it is 1-3 mm away from the edge of the second fallopian tube 52. The second support structure is pushed out from the delivery tube 2 into the first fallopian tube 51 using the push-out structure, ensuring that the second support structure is completely inserted into the second fallopian tube 52. The end of the second support structure closest to the edge of the second fallopian tube 52 is the first end, and the distance between the first end and the edge of the second fallopian tube is 1-3 mm. The balloon portion 14 of the second support structure is inflated using the inflation tube 15, and the second fallopian tube 52 is supported by the inflated second support structure. After inflating, the support portion maintains the supported state of the fallopian tube. The delivery tube 2 and the push-out structure are withdrawn from the body. When the first support structure is the structure that maintains the supported state, the balloon portion 14 is withdrawn at the same time.

[0059] Connection of two fallopian tube segments: Under laparoscopic observation, the traction wire 41 is passed through the first suture hole 42 and the second suture hole 43 in sequence. The traction wire 41 is pulled to control the first support structure to move towards the second support structure. During the process, the direction can be controlled and adjusted by the laparoscopic operating instruments to achieve connection between the first support structure and the second support structure; at the same time, the first fallopian tube segment 51 supported by the two is connected to the second fallopian tube segment 52.

[0060] Fallopian tube suturing and removal of traction suture 41: Under laparoscopic observation, the connected fallopian tubes are sutured, and finally the traction suture 41 is positioned. The traction suture 41 is separated from the supporting part by cutting, and the fallopian tube is completely sutured after separation. When the supporting part is an absorbable structure that maintains the supporting state, the supporting part is left inside the fallopian tube after complete suturing; when the supporting part changes with the size of the balloon part 14, several sutures are left unsutured, leaving one unsutured opening, the balloon part 14 is deflated, and the balloon and supporting part are removed simultaneously through the unsutured opening.

[0061] Example 2

[0062] A transabdominal tubal recanalization system includes the tubal recanalization instrument and laparoscopic system described in Example 1. It should be noted that the severed fallopian tube is divided into a first segment 51, located away from the uterus, and a second segment 52, connected to the uterus.

[0063] The system also includes:

[0064] Delivery tube 2 insertion unit: Under laparoscopic observation, control delivery tube 2 to enter the fallopian tube;

[0065] Support structure placement unit: The control ejection structure pushes the first support structure out of the delivery tube 2 into the first fallopian tube 51, ensuring that the first support structure is completely inserted into the first fallopian tube 51; then the control delivery tube 2 is withdrawn from the fallopian tube, and then the control inflation structure delivers inflation material to the inflation tube 15. The inflation material is delivered to the balloon portion 14 of the first support structure, and the balloon portion 14 is inflated, which simultaneously drives the support portion of the first support structure to be supported, thereby supporting the first fallopian tube 51; the support structure placement unit follows the same steps to send the support portion of the second support structure into the second fallopian tube 52, and uses the inflated support portion to support the second fallopian tube 52.

[0066] Withdrawal Unit: When the support part maintains its supported state on its own, after the support parts of the first and second support structures are supported in the corresponding fallopian tubes, the delivery tube 2, the push-out structure, and the balloon part 14 are withdrawn from the body; when the support part is maintained in a supported state by the balloon part 14, after the support part supports the fallopian tubes, the delivery tube 2 and the push-out structure are withdrawn from the body. Under the condition that the suture is basically completed and an unsutured opening remains, the balloon part 14 and the support part are withdrawn from the body; each plays a role in the two support structures respectively.

[0067] Fallopian tube docking unit: Control traction line 41 to bring the two support parts close to each other and dock.

[0068] Fallopian tube suturing unit: The suturing instruments inserted through the laparoscopy are used to complete the suturing of the connected fallopian tubes. The corresponding support part is supported by the balloon part 14. During the suturing process, an unsutured opening is left. The suturing is completed after the balloon part 14 and the support part are removed by the withdrawal unit.

[0069] A more preferred embodiment is as follows: Under laparoscopic observation, the support structure insertion unit controls the delivery tube 2 to stop at a position 1-3 mm away from the edge of the fallopian tube; the end of the support structure closest to the edge of the fallopian tube is the first end, and the support structure insertion unit controls the push-out structure to keep the distance between the first end of the support structure and the edge of the fallopian tube 1-3 mm; the above-mentioned unit settings can mainly ensure that after the support structure is inserted and filled, there is a certain distance between the end and the edge of the fallopian tube, so that it can be effectively connected during docking, leaving an overlapping suture area to ensure the suture effect.

[0070] The technical solutions of the embodiments of the present invention have been clearly and completely described above through specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

Claims

1. A transabdominal fallopian tube recanalization instrument, characterized by comprising: It includes, There are two supporting structures, namely the first supporting structure and the second supporting structure. To support the two segments of the fallopian tube, each supporting structure includes balloon portion; The support portion is located on the outside of the balloon portion. The support portion varies with the size of the balloon portion and includes multiple support plates attached to the balloon wall of the balloon portion. The inflation tube, connected to the balloon section, is used to inflate the balloon section. The end of the inflation tube is located outside the body and connected to the inflation structure. Two delivery pipes are provided. One support structure is installed inside each delivery pipe. The support structure is close to the inner wall of the delivery pipe. The position of the support structure and the delivery pipe remains unchanged when there is no external force. The charging pipe on the support structure is introduced to the outside of the delivery pipe through the delivery pipe. Two ejection structures are provided, one inside the conveying pipe. The first end of the ejection structure is located inside the conveying pipe, and the second end is located outside the conveying pipe. The ejection structure pushes the support structure inside the conveying pipe to the outside of the conveying pipe. The support structure is delivered to the two severed fallopian tube segments via a delivery tube through the laparoscopic operating channel. The severed fallopian tube segments include the first segment away from the uterus and the second segment connected to the uterus. A push-out mechanism pushes the first support structure out of the delivery tube. After push-out, the delivery tube is withdrawn, and the balloon portion of the first support structure is inflated through an inflation tube, causing the support portion to open and thus opening the first fallopian tube segment. The balloon remains inflated within the first fallopian tube segment along with the support portion. The delivery tube and push-out mechanism are then withdrawn, and the inflation tube remains outside the body after passing through the operating channel. The second support structure is delivered into the second fallopian tube segment in the same manner, thus opening the second fallopian tube segment. The distance between the edge of the supporting part of the first supporting structure and the edge of the first segment of the fallopian tube is 1-3 mm; The distance between the edge of the supporting part of the second supporting structure and the edge of the second segment of the fallopian tube is 1-3 mm; It also includes a docking structure, wherein the supporting part of the first supporting structure is the first supporting part, and the supporting part of the second supporting structure is the second supporting part; The docking structure includes a pull wire on a first support portion and a first threading hole on a second support portion. The pull wire passes through the threading hole and changes direction. The end of the pull wire moves, causing the threading hole to move towards the support portion of the first support structure until the support portions of the first and second support structures are docked. The pull wire is then introduced outside the body. A second threading hole is provided on the first support portion. The pull wire changes direction once through the first threading hole and then changes direction a second time through the second threading hole before being introduced outside the body through an operating channel. The pull wire is fixed after docking is achieved. Both the first and second threading holes are strip-shaped holes, and multiple first and second threading holes are provided. The first support section is provided with multiple inwardly extending inclined short plates 1 arranged around the edge circumference, and absorbable bio-adhesive is provided on the inclined short plates 1. Correspondingly, multiple outwardly extending inclined short plates II are set on the second support part, which are arranged around the edge circumference. The inclined short plates II are set into the inclined short plates I to complete the docking. The docking is maintained after docking by bio-adhesive. A first threading hole is set on the inclined plate II of the second support part, and a second threading hole is set on the inclined plate I of the first support part. The supporting portion is withdrawn from the fallopian tube through an unsutured small opening.

2. An inclined short plate one is provided at the first end of the first support part and the second support part, and an inclined short plate two is provided at the second end. The first support part and the second support part are in opposite directions in the two conveying pipes.

3. The access device of claim 1, wherein, An auxiliary docking structure is provided, which is a surgical forceps.

4. The recanalization device according to any one of claims 1-3, characterized in that, The ejection structure is equipped with an ejection plate and an ejection tube; the ejection plate is set inside the conveying tube and contacts the support structure to perform the ejection function; the first end of the ejection tube is connected to the ejection plate, and the second end is set outside the conveying tube; the movement of the ejection tube drives the ejection plate to perform its function. The rear end of the inflation tube is connected to the inflation structure, which can be a syringe or an electric inflation structure. The rear end of the inflation tube is connected to a connector with a one-way valve that allows air to enter. The connector connects to the inflation structure to complete the inflation action. After the inflation structure is removed, the inflation state is maintained. After the connector is removed, the air is released. The entire structure is simple and reasonable.

5. A transabdominal tubal recanalization system, characterized in that, Includes the fallopian tube recanalization instrument and laparoscopic system as described in any one of claims 1-2; The system also includes: Delivery tube insertion unit: controls the insertion of the delivery tube into the fallopian tube; Support structure placement unit: The control ejection structure pushes the first support structure out of the delivery tube into the first segment of the fallopian tube, ensuring that the first support structure is completely inserted into the first segment of the fallopian tube; then the control delivery tube is withdrawn from the fallopian tube, and then the control inflation structure delivers inflation material to the inflation tube. The inflation material is delivered to the balloon part of the first support structure, and the balloon part is inflated, which simultaneously drives the support part of the first support structure to be supported, thereby supporting the first segment of the fallopian tube; the support structure placement unit follows the same steps to send the support part of the second support structure into the second segment of the fallopian tube, and uses the inflated support part to support the second segment of the fallopian tube; Withdrawal Unit: When the support part maintains its supported state on its own, after the support parts of the first and second support structures are supported in the corresponding fallopian tubes, the delivery tube, the push-out structure, and the balloon part are withdrawn from the body; when the support part is maintained in a supported state by the balloon part, after the support part supports the fallopian tubes, the delivery tube and the push-out structure are withdrawn from the body, and the balloon part and the support part are withdrawn from the body after the suture is basically completed with an unsutured opening; each of these functions affects the two support structures respectively. Fallopian tube docking unit: Control the traction wire to bring the two support parts closer together and dock them; Fallopian tube suturing unit: The suturing instrument, which is inserted through the laparoscope, is used to suture the connected fallopian tubes. The corresponding support part is supported by the balloon part. During the suturing process, an unsutured opening is left. The suturing is completed after the balloon part and the support part are removed from the unit.

6. The reconnection system according to claim 5, characterized in that, The control delivery tube stops when it reaches a position 1-3 mm away from the edge of the fallopian tube; the first end of the support structure is close to the edge of the fallopian tube, and the support structure insertion unit controls the ejection structure to keep the first end of the support structure 1-3 mm away from the edge of the fallopian tube.

Images