Anchoring system for ultrasound-guided non-surgical fixation of intrauterine device and use method of anchoring system

Abstract

The invention relates to an intrauterine device system, in particular to an anchoring system for fixing an intrauterine device without ultrasonic guidance operation and a using method of the anchoring system, the anchoring system comprises a pusher capable of penetrating through a cervical canal, an anchoring structure fixator connected with the intrauterine device and a guide tube for placing the anchoring structure fixator, the guiding tube is arranged in the pusher, and the pusher penetrates through a cervical canal and then pushes the guiding tube to enable the anchoring structure fixing device to be anchored to the bottom wall of the uterus. Pushing and fixing of the intrauterine device can be achieved through an anchoring system composed of the pusher, the anchoring structure fixator and the guide tube under ultrasonic guidance, hysteroscope suture operation is not needed, the requirement for the environment is low, safety is high, the intrauterine device is particularly suitable for patients with uterine enlargement and serious dysmenorrhea symptoms, and the application range is wide. Therefore, the convenience of the patient can be improved, and the medical burden related to the conventional operation method can be reduced.

Description

Technical Field

[0001] The invention relates to an intrauterine birth control system, in particular to an anchoring system for an intrauterine birth control device guided by ultrasound without surgery and a use method thereof. Background Art

[0002] At present, it is very common for intrauterine devices to fall out, especially in cases where the levonorgestrel-releasing intrauterine system (LNG-IUS) is used to treat adenomyosis. Due to the enlargement of the uterus, the placed intrauterine contraceptive system is easy to fall out, affecting the treatment effect. The traditional scheme mostly uses hysteroscopy to suture and fix the contraceptive device to the uterine wall, which is not only technically difficult and unsafe, but also has a heavy financial burden on patients and is not convenient. Summary of the invention

[0003] In view of the above technical problems, the present invention provides a safe and convenient ultrasound-guided anchoring system for fixing a contraceptive device without surgery.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: an ultrasound-guided non-surgical anchoring system for fixing an intrauterine contraceptive device, including a pusher that can pass through the cervical canal, and also includes an anchoring structure fixer connected to the intrauterine contraceptive device and a guide tube for placing the anchoring structure fixer, the guide tube is placed in the pusher, and after the pusher passes through the cervical canal, the anchoring structure fixer is anchored on the bottom wall of the uterus by pushing the guide tube.

[0005] Preferably, the guide tube has an opening along its axial direction, the anchoring structure fixer is placed into the front lumen of the guide tube through the opening, and the intrauterine contraceptive device is placed into the rear lumen of the guide tube through the opening.

[0006] Preferably, the front end of the guide tube is wedge-shaped, and the pusher drives the rear end of the guide tube to wedge into the bottom wall of the uterus to guide the anchoring structure fixer to be anchored on the bottom wall of the uterus.

[0007] Preferably, a compartment cavity is provided in the front section of the guide tube from the end of the front section rearward.

[0008] Preferably, the anchoring structure fixer comprises a cylinder made of biocompatible material which can be placed in the front inner cavity of the guide tube and a plurality of anchor protrusions arranged on the outside of the cylinder. The front end portion of the cylinder is spherical and is placed at the wedge-shaped end portion of the guide tube. The rear end of the cylinder is provided with a connecting line connected to the intrauterine contraceptive device. When the guide tube guides the spherical end portion of the cylinder to extend into the bottom wall of the uterus, the plurality of anchor protrusions are anchored in the bottom wall of the uterus.

[0009] Preferably, a limit plate is radially provided in the middle of the guide tube, and the limit plate extends outwardly according to the inner cavity of the pusher, and the limit plate extends inwardly through the rear end portion of the compartment cavity. The rear end portion of the cylinder body is provided with a flange, and the flange can abut against the inward extension portion of the limit plate.

[0010] Preferably, the pusher includes a hollow guide rod that can pass through the cervical canal and a hollow handle connected to the guide rod, the guide tube is placed in the inner cavity of the guide rod, the inner cavity of the handle is provided with a push rod, and the push rod is connected to the rear end of the guide tube, and the push rod pushes the rear end of the guide tube so that its front end extends forward from the inner cavity of the guide rod.

[0011] The present invention also provides a method for using an anchoring system for fixing a contraceptive device without surgery under ultrasound guidance, which comprises the following steps: (1) Binding the intrauterine contraceptive device together through the connecting wire of the anchoring structure fixator; (2) placing the anchoring structure fixator together with the intrauterine contraceptive device in the inner cavity of the guide tube; (3) Connect the guide tube to the push rod, and insert the front end of the guide tube from the handle at the rear end of the pusher into the inner cavity of the guide rod at the front end of the pusher; (4) The push rod is pushed and pulled to drive the guide tube to move relative to the guide rod to fix the intrauterine contraceptive device.

[0012] Preferably, when fixing the intrauterine contraceptive device, under ultrasound guidance, first measure the thickness of the uterine fundus wall at the predetermined fixed position; then pass the guide rod through the cervical canal until the front end of the guide rod contacts the uterine fundus wall at the predetermined fixed position; then push the push rod forward to make the guide tube extend out of the guide rod and wedge into the uterine fundus wall, and when the guide tube is wedged into the uterine fundus wall, it drives the cylinder of the anchoring structure fixer to extend into the uterine fundus wall and anchor it on the uterine fundus wall through the anchor protrusion.

[0013] Preferably, after the anchoring structure fixer is anchored, the guide tube is retracted into the guide rod by pulling the push rod backward, and then the pusher is withdrawn, and the intrauterine contraceptive device tied to the anchoring structure fixer passes through the pusher and remains in the uterus.

[0014] It can be seen from the above technical solutions that the present invention can achieve the pushing and fixing of the intrauterine contraceptive device under ultrasound guidance through the anchoring system composed of a pusher, an anchoring structure fixer and a guide tube, without the need for hysteroscopic suturing surgery. It has low environmental requirements and high safety. It is particularly suitable for patients with enlarged uterus and severe dysmenorrhea symptoms. It can not only improve the convenience of patients, but also reduce the medical burden associated with traditional surgical methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the structure of the guide tube in the present invention.

[0016] Figure 2 It is a structural schematic diagram of the anchoring structure fixer in the present invention.

[0017] Figure 3 It is a structural schematic diagram of the pusher in the present invention.

[0018] Figure 4 It is a schematic diagram of the combined structure of the anchoring system of the present invention.

[0019] Figure 5 It is a schematic diagram of the intrauterine contraceptive device after being fixed in the present invention. DETAILED DESCRIPTION

[0020] The present invention is described in detail below in conjunction with the accompanying drawings. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The present invention provides an anchoring system for fixing an intrauterine device without surgery under ultrasound guidance, which includes a pusher 1 that can pass through the cervical canal, an anchoring structure fixer 3 connected to an intrauterine contraceptive device 2, and a guide tube 4 for placing the anchoring structure fixer, the guide tube being placed in the pusher, and the pusher passing through the cervical canal and then pushing the guide tube to anchor the anchoring structure fixer on the uterine bottom wall 5. Thus, the present invention can realize the pushing and fixing of the intrauterine contraceptive device under ultrasound guidance without the need for hysteroscopic suturing surgery, providing a safer and more acceptable alternative for patients with enlarged uterus and severe dysmenorrhea symptoms who wish to retain their fertility, which not only has lower environmental requirements and improves the convenience of patients, but also reduces the medical burden associated with traditional surgical methods.

[0022] Specifically, the guide tube 4 is provided with an opening 41 along its axial direction, and the anchoring structure fixer is placed into the front section inner cavity of the guide tube from the opening, and the intrauterine contraceptive device is placed into the rear section inner cavity of the guide tube from the opening. The guide tube of the present invention not only has a guiding function, but also the design of the opening can conveniently and quickly place the anchoring structure fixer. Preferably, the front section end of the guide tube 4 is wedge-shaped, and the pusher 1 drives the front section end of the guide tube to wedge into the bottom wall of the uterus by pushing the rear section of the guide tube to guide the anchoring structure fixer to be anchored on the bottom wall of the uterus. When the guide tube contacts the bottom wall of the uterus, under the action of the thrust, the wedge-shaped end design is easier to extend into the bottom wall of the uterus.

[0023] A partition cavity 42 is provided in the front section of the guide tube from the end of the front section to the rear. When the wedge-shaped end is inserted into the bottom wall of the uterus, the partition cavity provides a certain space for the insertion process of the guide tube, which not only makes it easier to push the guide tube, but also facilitates the discharge of waste liquid, etc. The anchoring structure fixer 3 of the present invention includes a cylinder 31 made of biocompatible material that can be placed in the inner cavity of the front section of the guide tube and a plurality of anchor protrusions 32 arranged on the outside of the cylinder. The front end of the cylinder is spherical to reduce damage to the uterine wall. It is placed at the wedge-shaped end of the guide tube. The rear end of the cylinder is provided with a connecting line 33 connected to the intrauterine contraceptive device. When the guide tube guides the spherical end of the cylinder to extend into the bottom wall of the uterus, the plurality of anchor protrusions are anchored in the bottom wall of the uterus, thereby fixing the intrauterine contraceptive device in the uterus. During implementation, the anchoring projection is similar to a barb, and is easily embedded in the bottom wall of the uterus as the cylinder is advanced. When gravity or external force pulls, the barb-like anchoring projection can hook the bottom wall of the uterus to prevent it from falling off.

[0024] A limit plate 43 is radially provided in the middle of the guide tube, and the limit plate extends outward according to the inner cavity of the pusher, which is conducive to accurate placement in the pusher to prevent deviation; the limit plate extends inward through the rear end of the compartment, thereby radially separating the compartment to prevent waste liquid and the like from flowing out; a flange 34 is provided at the rear end of the cylinder, and the flange can abut against the inward extension of the limit plate to prevent the cylinder from sliding. Preferably, the pusher 1 includes a hollow guide rod 11 that can pass through the cervical canal and a hollow handle 12 connected to the guide rod, the guide tube is placed in the inner cavity of the guide rod, and the inner cavity of the handle is provided with a push rod 13, which is connected to the rear end of the guide tube, and the push rod pushes the rear end of the guide tube to make its front end extend forward from the inner cavity of the guide rod, so that the guide anchoring structure fixer of the guide tube extends into the bottom wall of the uterus to achieve fixation of the intrauterine contraceptive device.

[0025] The present invention also provides a method for using the above-mentioned ultrasound-guided non-surgical fixation of the intrauterine device anchoring system, which comprises the following steps: First, the intrauterine device is tied together through the connecting line of the anchoring structure fixer, and then the anchoring structure fixer and the intrauterine device are placed in the inner cavity of the guide tube. Then the guide tube is connected to the push rod, and the front end of the guide tube is inserted from the handle at the rear end of the pusher into the inner cavity of the guide rod at the front end of the pusher. After the system is assembled, the push rod is used to push and pull the guide tube relative to the guide rod to fix the intrauterine device. The specific method is as follows: Under ultrasound guidance, first measure the thickness of the uterine bottom wall at a predetermined fixed position, generally selecting a position where the wall thickness is greater than 1 cm; then pass the guide rod through the cervical canal through the handle until the front end of the guide rod contacts the uterine bottom wall at a predetermined fixed position; then push the push rod forward to make the guide tube extend out of the guide rod and wedge into the uterine bottom wall. When the guide tube wedges into the uterine bottom wall, it drives the cylinder of the anchoring structure fixer to extend into the uterine bottom wall and anchor it on the uterine bottom wall through the anchor convexity to ensure that the cylinder will not fall off. After the anchoring structure fixer is anchored, the guide tube is retracted into the guide rod by pulling the push rod backward, and then the pusher is withdrawn together with the push rod, so that the intrauterine contraceptive device tied to the anchoring structure fixer passes through the pusher and is retained in the uterus, thereby achieving the fixation of the intrauterine contraceptive device. The present invention is completed only under ultrasound guidance, without the need for hysteroscopic suturing surgery, and provides a safer, more acceptable, minimally invasive and efficient alternative for patients with a history of LNG-IUS device prolapse.

Claims

1. An anchoring system for an ultrasound-guided non-surgical intrauterine device, comprising a pusher that can pass through the cervical canal, characterized in that: It also includes an anchoring structure fixer connected to the intrauterine contraceptive device and a guide tube for placing the anchoring structure fixer. The guide tube is placed in the pusher. After the pusher passes through the cervical canal, the anchoring structure fixer is anchored on the bottom wall of the uterus by pushing the guide tube.

2. The anchoring system for ultrasound-guided non-surgical fixation of contraceptive device according to claim 1, characterized in that: The guide tube is provided with an opening along its axial direction, the anchoring structure fixer is placed into the front inner cavity of the guide tube through the opening, and the intrauterine contraceptive device is placed into the rear inner cavity of the guide tube through the opening.

3. The anchoring system for ultrasound-guided non-surgical fixation of contraceptive device according to claim 2, characterized in that: The front end of the guide tube is wedge-shaped, and the pusher drives the front end of the guide tube to wedge into the uterine bottom wall by pushing the rear end of the guide tube to guide the anchoring structure fixer to be anchored on the uterine bottom wall.

4. The anchoring system for ultrasound-guided non-surgical fixation of contraceptive device according to claim 3, characterized in that: A compartment is provided at the front section of the guide tube from the end of the front section to the rear.

5. The ultrasound-guided non-surgical anchoring system for contraceptive device according to claim 4, characterized in that: The anchoring structure fixer comprises a barrel made of biocompatible material which can be placed in the front inner cavity of the guide tube and a plurality of anchoring protrusions arranged on the outside of the barrel. The front end of the barrel is spherical and is placed at the wedge-shaped end of the guide tube. The rear end of the barrel is provided with a connecting line connected to the intrauterine contraceptive device. When the guide tube guides the spherical end of the barrel to extend into the bottom wall of the uterus, the plurality of anchoring protrusions are anchored in the bottom wall of the uterus.

6. The ultrasound-guided non-surgical anchoring system for contraceptive device according to claim 5, characterized in that: A limit plate is radially provided in the middle of the guide tube, and the limit plate extends outwardly according to the inner cavity of the pusher, and the limit plate extends inwardly through the rear end of the compartment. The rear end of the cylinder is provided with a flange, and the flange can be abutted against the inward extension of the limit plate.

7. The anchoring system for ultrasound-guided non-surgical fixation of a contraceptive device according to any one of claims 1 to 6, characterized in that: The pusher includes a hollow guide rod that can pass through the cervical canal and a hollow handle connected to the guide rod. The guide tube is placed in the inner cavity of the guide rod. The inner cavity of the handle is provided with a push rod, which is connected to the rear end of the guide tube. The push rod pushes the rear end of the guide tube to make its front end extend forward from the inner cavity of the guide rod.

8. A method for using the anchoring system of the ultrasound-guided non-surgical fixed contraceptive device according to any one of claims 1 to 7, characterized in that it comprises the following steps: (1) Binding the intrauterine contraceptive device together through the connecting wire of the anchoring structure fixator; (2) placing the anchoring structure fixator together with the intrauterine contraceptive device in the inner cavity of the guide tube; (3) Connect the guide tube to the push rod, and insert the front end of the guide tube from the handle at the rear end of the pusher into the inner cavity of the guide rod at the front end of the pusher; (4) The push rod is pushed and pulled to drive the guide tube to move relative to the guide rod to fix the intrauterine contraceptive device.

9. The method for using the anchoring system for ultrasound-guided non-surgical fixation of an IUD according to claim 8, characterized in that: When fixing the intrauterine contraceptive device, under the guidance of ultrasound, first measure the thickness of the uterine bottom wall at the predetermined fixed position; then pass the guide rod through the cervical canal until the front end of the guide rod contacts the uterine bottom wall at the predetermined fixed position; then push the push rod forward to make the guide tube extend out of the guide rod and wedge into the uterine bottom wall. When the guide tube is wedged into the uterine bottom wall, it drives the cylinder of the anchoring structure fixer to extend into the uterine bottom wall and anchor on the uterine bottom wall through the anchor convexity.

10. The method for using the anchoring system for ultrasound-guided non-surgical fixation of a contraceptive device according to claim 9, characterized in that: After the anchoring structure fixer is anchored, the guide tube is retracted into the guide rod by pulling the push rod backward, and then the pusher is withdrawn, and the intrauterine contraceptive device tied to the anchoring structure fixer passes through the pusher and remains in the uterus.

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