阅读说明：本技术 输卵管封堵装置 (Oviduct plugging device ) 是由 刘云奇 于 2020-05-06 设计创作，主要内容包括：本发明属于医疗器械技术领域,具体涉及一种输卵管封堵装置,其特征在于：包括封堵器和输送杆；所述输送杆与所述封堵器之间可拆卸式连接；所述封堵器为采用记忆性材料编织的网状结构,所述封堵器的外形为鸭梨状,一端膨大、另一端缩小；所述封堵器的缩小端与所述输送杆可拆卸式连接。该输卵管封堵装置具有良好的弹性,能够更好的适应输卵管壁的变化,且能够自动均匀膨起并与输卵管壁紧密贴合,保证了封堵的严密性。(The invention belongs to the technical field of medical instruments, and particularly relates to an oviduct plugging device which is characterized in that: comprises a stopper and a conveying rod; the conveying rod is detachably connected with the plugging device; the occluder is of a net structure woven by memory materials, the occluder is shaped like a pear, one end of the occluder is expanded, and the other end of the occluder is contracted; the shrinking end of the plugging device is detachably connected with the conveying rod. The oviduct plugging device has good elasticity, can better adapt to the change of the oviduct wall, can automatically and uniformly expand and is tightly attached to the oviduct wall, and the tightness of plugging is ensured.)

1. A fallopian tube occlusion device, characterized by: comprises a stopper and a conveying rod; the conveying rod is detachably connected with the plugging device; the occluder is of a net structure woven by memory materials, the occluder is shaped like a pear, one end of the occluder is expanded, and the other end of the occluder is contracted; the shrinking end of the plugging device is detachably connected with the conveying rod.

2. The tubal occlusion device of claim 1 wherein: the memory material is a memory alloy wire or a memory polymer material wire.

3. The tubal occlusion device of claim 1 wherein: the outer surface of the plugging device is provided with a covering film, and the covering film is made of polyethylene terephthalate, silica gel or polytetrafluoroethylene materials.

4. The tubal occlusion device of claim 1 wherein: the outer surface of the plugging device is provided with a covering film, and the covering film is made of biodegradable materials.

5. The tubal occlusion device of claim 1 wherein: the blocking device is characterized in that a blocking film is arranged inside the blocking device and made of polyethylene terephthalate, silica gel or polytetrafluoroethylene materials.

6. The tubal occlusion device of claim 1 wherein: the blocking device is characterized in that a blocking film is arranged inside the blocking device and made of biodegradable materials.

7. The tubal occlusion device of claim 1 wherein: still include and accomodate the sheath pipe, the stopper can be accomodate in accomodating the sheath pipe.

8. The tubal occlusion device of claim 7 wherein: still including carrying the sheath pipe, accomodate sheath pipe detachably connect in carry the one end of sheath pipe, the other end of carrying the sheath pipe is provided with flexible turn portion.

9. The tubal occlusion device of claim 8 wherein: and a direction knob is arranged on the conveying sheath tube.

10. The tubal occlusion device of claim 1 wherein: the reduced end of the plugging device is in threaded connection with the conveying rod.

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an oviduct plugging device.

Background

Commonly used effective contraceptive measures include: condoms, intrauterine contraceptive rings, various contraceptive medicines, sterilization operations and the like. Condoms and various types of contraceptives are used mostly for temporary contraception or short-term contraception. Long-term contraception is typically performed using an intrauterine contraceptive ring or sterilization procedure.

However, the intrauterine device is prone to cause female menorrhagia, abdominal pain, intrauterine adhesion and other complications, and the incidence rate is high. The operation of sterilization usually selects the operation of tubal ligation, which is not the first choice for women because of larger trauma and difficult abdominal pain. In recent years, salpingemphraxis has become accepted by people because of small trauma, convenient placement and few complications.

At present, the clinical measures for blocking the oviduct mainly comprise (1) implanting a device which is made of a metal coil and polyethylene terephthalate (PET) fibers in the coil into the oviduct, and completely blocking the oviduct about 3 months after implantation; (2) firstly burning the intima of the interstitial part of the fallopian tube by using a radio frequency device, then implanting a medical silica gel plug with a hole at the intima, wherein the connective tissue of the interstitial part of the fallopian tube blocks the meshes of the silica gel plug in the repair process to play a role in blocking the fallopian tube; (3) injecting medical hardening agent into the interstitial part of the fallopian tube to block the fallopian tube so as to play a role in sterilization; (4) an occluding device, similar to a stent graft, is implanted within a fallopian tube.

Due to the physiological properties and the special morphology of the fallopian tubes, these non-expanding implant devices cannot fit tightly against the fallopian tube walls and are prone to displacement, resulting in occlusion failure. The design and the opening principle of the blocking device of the blood vessel-like covered stent are the same as those of the blood vessel stent, and the blocking stent can be ensured to be completely opened and attached to an oviduct only by using an expansion balloon to open the stent, but the technical complexity is increased. Because the stent is implanted in a small fallopian tube part, the expansion degree of the balloon must be strictly controlled, otherwise, over-expansion has the possibility of causing rupture of the fallopian tube, and the implantation risk is increased. If the stent is not balloon expanded, the stent may not be fully open, which, like those implanted devices that are not inflated, may not ensure complete occlusion of the fallopian tube and may be subject to migration leading to occlusion failure.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the fallopian tube plugging device which has good elasticity, can better adapt to the change of the fallopian tube wall, can automatically and uniformly bulge and is tightly attached to the fallopian tube wall, and ensures the tightness of plugging.

An oviduct plugging device comprises a plugging device and a conveying rod; the conveying rod is detachably connected with the plugging device; the occluder is of a net structure woven by memory materials, the occluder is shaped like a pear, one end of the occluder is expanded, and the other end of the occluder is contracted; the shrinking end of the plugging device is detachably connected with the conveying rod.

In the above oviduct occlusion device, the memory material is a memory alloy wire or a memory polymer material wire.

In the oviduct plugging device, the external surface of the plugging device is provided with the covering film, and the covering film is made of polyethylene terephthalate, silica gel or polytetrafluoroethylene material.

In the oviduct plugging device, the external surface of the plugging device is provided with the covering film, and the covering film is made of biodegradable materials.

In the oviduct plugging device, the plugging device is internally provided with the blocking film, and the blocking film is made of polyethylene terephthalate, silica gel or polytetrafluoroethylene material.

In the oviduct plugging device, the blocking film is arranged in the plugging device and is made of biodegradable materials.

The oviduct plugging device further comprises a storage sheath, and the plugging device can be stored in the storage sheath.

Foretell oviduct plugging device still includes and carries the sheath pipe, accomodate sheath pipe detachably connect in carry the one end of sheath pipe, the other end of carrying the sheath pipe is provided with flexible turn portion.

In the oviduct plugging device, the conveying sheath tube is provided with the direction knob.

In the oviduct plugging device, the reduced end of the plugging device is in threaded connection with the conveying rod.

The oviduct plugging device is characterized in that the plugging device is made of a memory material, the plugging device can be contained in a containing sheath tube in use, a conveying sheath tube can be arranged at the isthmus of the oviduct by a direction knob, the conveying rod is pushed to push the plugging device made of the memory material out of the containing sheath tube along the conveying sheath tube to reach the isthmus of the oviduct, and the plugging device is made of the memory material, is released after being pushed out, automatically and uniformly swells and is tightly attached to the wall of the oviduct, so that the aim of sealing the oviduct is fulfilled. Because the occluder is made of memory materials, the occluder has good elasticity, can better adapt to the change of the fallopian tube wall, and ensures the tightness of the closure.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an occluder according to an embodiment of the present invention;

fig. 2 is a schematic view of a structure of a covering film added to the outside of the occluder according to an embodiment of the present invention;

fig. 3 is a schematic view of a structure of a barrier film added inside the occluder according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a delivery sheath according to an embodiment of the present invention;

figure 5 is a schematic view of the occluder of one embodiment of the present invention assembled into a receiving sheath after attachment to a delivery rod.

The reference numerals are explained below:

1. an occluder; 2. a conveying rod; 3. coating a film; 4. a barrier film; 5. a sheath tube is accommodated; 6. a delivery sheath; 7. a flexible turn portion; 8. a direction knob.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

The invention aims to solve the defects that the non-expansion implantation device cannot be tightly attached to the wall of the fallopian tube, is easy to displace and has poor plugging effect in the prior art and the defects of the similar vessel tectorial membrane stent requiring higher operation technology through the following embodiments.

As shown in fig. 1 to 5, the invention provides a fallopian tube occlusion device, which comprises an occluder 1 and a delivery rod 2; the conveying rod 2 is detachably connected with the plugging device 1; the occluder 1 is a net structure woven by memory materials, the occluder 1 is pear-shaped, one end of the occluder is expanded, and the other end of the occluder is contracted; the shrinking end of the plugging device 1 is detachably connected with the conveying rod 2.

The occluder is a net structure woven by memory materials, and the memory materials are released again after being compressed and can restore to the original shape, so that the occluder can be accommodated in a container firstly, and is pushed out from the container by external force, and is released to the isthmus of the fallopian tube. Of course, the occluders with different sizes can be selected according to different physiological structures of the fallopian tube of a patient, and the occluders are just attached to the fallopian tube wall after the memory reticular structure is released.

In a preferred embodiment of the present invention, the memory material is a memory alloy wire or a memory polymer material wire.

In a preferred embodiment of the present invention, as shown in fig. 2, the outer surface of the occluder 1 is provided with a coating 3, and the coating 3 is made of polyethylene terephthalate, silica gel or polytetrafluoroethylene.

As another preferred embodiment of the invention, in the above-mentioned fallopian tube occlusion device, as shown in FIG. 2, the outer surface of the occluder 1 is provided with a coating 3, and the coating 3 is made of biodegradable material.

As a preferred embodiment of the present invention, in the above-mentioned fallopian tube occlusion device, as shown in fig. 3, a barrier film 4 is arranged inside the occluder 1, and the barrier film 4 is made of polyethylene terephthalate, or silica gel, or polytetrafluoroethylene material.

In another preferred embodiment of the present invention, in the above-mentioned fallopian tube occlusion device, a blocking film 4 is arranged inside the occluder 1, and the blocking film 4 is made of biodegradable material.

In another preferred embodiment of the present invention, in the above-mentioned fallopian tube occlusion device, a blocking film 4 is arranged inside the occluder 1, and the blocking film 4 is made of biodegradable material.

In an alternative embodiment, as shown in fig. 5, the above-mentioned fallopian tube occlusion device further comprises a receiving sheath 5, and the occluder 1 can be received in the receiving sheath 5.

In an alternative embodiment, as shown in fig. 4, the above-mentioned fallopian tube occlusion device further comprises a delivery sheath 6, the receiving sheath 5 is detachably connected to one end of the delivery sheath 6, and the other end of the delivery sheath 6 is provided with a flexible bending part 7.

In a preferred embodiment, the delivery sheath 6 is provided with a direction knob 8. The position of the conveying sheath can be adjusted by rotating the direction knob, and the conveying sheath is placed at the isthmus of the oviduct to treat the release of the occluder.

In an alternative embodiment, as shown in fig. 1 and 5, in the above-mentioned fallopian tube occlusion device, a thread connection is formed between the reduced end of the occluder 1 and the delivery rod. The reduced end is provided with an external thread structure.

The oviduct plugging device is made of the memory material wire into a net structure, and the memory material has the property of recovering the original shape, so that the external dimension of the plugging device can be manufactured according to the physiological structures of the oviducts of different patients, the plugging device can be well attached to the oviduct wall after being automatically released, good plugging is achieved, the operation is simple and convenient, the requirement on operation experience is not high, and the complications are few. In order to perfectly prevent the egg cells from migrating from the net structure and improve the contraceptive safety, a covering film is arranged on the outer surface of the stopper, or a blocking film is arranged inside the stopper. This oviduct plugging device during the use, accomodate the plugging device earlier in accomodating the sheath, accomodate the tip of sheath pipe connection at the transport sheath, can stretch out the plugging device promotion from transport sheath through the transfer bar, the plugging device is evenly released by oneself after pushing out, closely laminates with the oviduct pipe wall, intact shutoff.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.