CN108498146B

CN108498146B - Cervical cerclage device

Info

Publication number: CN108498146B
Application number: CN201711300457.4A
Authority: CN
Inventors: 王凯; 余军辉; 周荷玲; 王珺; 许惠惠
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-12-10
Filing date: 2017-12-10
Publication date: 2020-03-24
Anticipated expiration: 2037-12-10
Also published as: CN108498146A

Abstract

Cervical cerclage ware, its characterized in that: comprises a contractible cerclage ring, a plurality of pushing brackets with one end being half-hooped with the cerclage ring and the other end being hinged on a pushing seat, a cerclage ring sleeve which enables the pushing brackets to move and contract towards the cerclage ring in the radial direction, and a uterus suction head which is close to the middle of the cerclage ring and is integrated with a cerclage device. The uterine neck is sucked up by the uterine suction head, the pushing support pushes the cerclage ring to be sleeved at the corresponding position of the uterine neck, and the cerclage ring is contracted to be smaller by the pushing support through the cerclage ring closing sleeve, so that the corresponding position of the uterine neck is locked to be smaller, and the aim of realizing non-invasive cerclage by pulling the uterine neck out is fulfilled.

Description

Cervical cerclage device

Technical Field

The invention relates to a cerclage device, in particular to a cervical cerclage device, and belongs to the technical field of IPC No. A61B.

Background

The cervical cerclage device is just the cervical cerclage, and the cervical cerclage aims at the characteristics of cervical internal os laxity, old cervical laceration, cervical part of vagina shorter than 0.5cm or late abortion, premature birth history or double and multiple pregnancy of patients and the like.

The early cervical cerclage operation is mainly stitching, the cervix is gathered and contracted through the invasive silk thread stitching, and then the cervical canal is locked, so that the organizational barrier at the cervix part prevents the amniotic fluid from flowing out and the umbilical cord from prolapsing caused by the premature rupture of the fetal membrane, the operation has the advantages and the disadvantages that the cutting wound of the silk thread on the cervix tissue is easy to occur, and the tissue is more easily damaged and the infection is caused particularly under the condition of long stitching retention time; the suture effect is uncertain, and the cervical canal is not tightly locked due to the loose suture, so that the trauma and stimulation of cervical tissues are aggravated; in addition, the operation difficulty is high, the adverse stimulation to the patient is high, and the uterine contraction is easy to cause.

Therefore, a cervical cerclage which is a cervical cerclage for non-invasively contracting and tightening the cervix and blocking the cervical canal is presented.

As disclosed in chinese patent publication No.: CN201806769U discloses a cervical cerclage, which is hooped at the corresponding position of the cervix by a cervical canal plug hoop, thereby achieving the purpose of non-invasive operation. There is also a cervical cerclage disclosed in chinese patent publication No. CN202458542U, which is ring-shaped, made of elastic material, and provided with convex teeth on the inner wall, and then is spread by a tool and then is cerclaged on the cervix.

Above-mentioned cerclage simple structure, but need put with the instrument cover, generally all need adopt through the earlier stage operation step of vagina cervical cerclage art, the patient gets bladder lithotomy position promptly, and conventional disinfection is spread the piece of cloth, with expanding the external genitals etc. then with the front and back lip of the uterus neck of the moxa forceps holder, under the vagina state of opening, pull out the cervix, it is comparatively troublesome with regard to operating like this, and to the patient have certain mood burden, also can bring some injuries to organism tissue.

Disclosure of Invention

The invention aims to solve the technical problem that the cerclage process is not reasonable enough due to the structure of the conventional cervical cerclage, and provides the cervical cerclage which does not need to pull the cervix out of the vaginal opening to cerclage the cervix.

The technical scheme for solving the problems of the invention is as follows:

cervical cerclage ware, its characterized in that: comprises a contractible cerclage ring, a plurality of pushing brackets with one end being half-hooped with the cerclage ring and the other end being hinged on a pushing seat, a cerclage ring sleeve which enables the pushing brackets to move and contract towards the cerclage ring in the radial direction, and a uterus suction head which is close to the middle of the cerclage ring and is integrated with a cerclage device.

The cerclage ring comprises a plurality of ring sleeves forming a ring body, and cerclage strips arranged among the ring sleeves and capable of being retracted into the ring sleeves.

One end of the cerclage strip is fixed in the ring sleeve, and the other end of the cerclage strip is provided with a bulge or a groove which can be matched with a groove or a bulge on the inner wall of the other ring sleeve, and the cerclage strip penetrates into the ring sleeve under the stress condition and is locked in the ring sleeve.

The pushing support is of a bent structure, and the pushing distance of the loop closing sleeve on the pushing support corresponds to the radial distance of the pushing cerclage ring of the pushing support in radial contraction.

The surface of the uterine suction head is disc-shaped, a cavity for accommodating part of cervical tissues is formed on the surface of the uterine suction head in a concave mode, and a plurality of negative pressure generating holes are evenly formed along the inner edge of the disc.

The pushing seat and the ring sleeve are pushed by the motor control.

The cerclage device is rod-shaped.

The invention has the following beneficial effects:

the uterine neck is sucked up by the uterine suction head, the pushing support pushes the cerclage ring to be sleeved at the corresponding position of the uterine neck, and the cerclage ring is contracted and reduced by the pushing support with force applied to the cerclage ring by the ring closing sleeve so as to lock the corresponding position of the uterine neck to be small, so that the aim of realizing noninvasive cerclage by pulling out the uterine neck is fulfilled.

Description of the drawings:

FIG. 1 is a schematic external view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of a portion of the structure of the present invention;

fig. 4 is a schematic view of the state of fig. 3 in use.

The specific implementation mode is as follows:

the invention is explained in further detail below with reference to the drawings.

Referring to fig. 1 to 3, the cervical cerclage 5 has a rod shape. The cerclage device comprises a contractible cerclage ring 1, a plurality of pushing brackets 3, one end of each pushing bracket 3 is used for half hooping the cerclage ring 1, the other end of each pushing bracket 3 is hinged on a pushing seat 2, a plurality of ring closing sleeves 4 which enable the plurality of pushing brackets 3 to move and contract towards the cerclage ring 1 in the radial direction, and a uterine suction head 6 which is close to the middle of the cerclage ring 1 and integrated with the cerclage device 5.

When the bracket 3 is pushed to half-hoop the cerclage ring 1, the hoop opening faces to the radial center of the cerclage ring. The arrangement is characterized in that the pushing support 3 is used for forcefully applying force to the cerclage ring 1 when the cerclage ring 1 contracts radially, and when the cerclage ring 1 is separated, the cerclage ring 1 can slide out of the cuff only by the pushing support 3 which is back to the cerclage ring 1 to be expanded radially.

The push base 2 also extends with a hollow push base rod 21. The ring-closing sleeve 4 further has a ring-closing base 41, the ring-closing base 41 is hollow, a hollow push rod 42 extends from the ring-closing base 41, the push rod 42 is sleeved outside the push seat rod 21, and the push seat rod 21 is exposed out of the push rod 42 and has a tail end. The middle cavity can be provided with an air pressure cavity connected with the uterine suction head 6.

The cerclage ring 1 comprises a plurality of ring sleeves 11 forming a ring body, and cerclage strips 12 which are arranged among the ring sleeves 11 and can be retracted into the ring sleeves 11.

One end of the cerclage strip 12 is fixed in the ring sleeve 11, and the other end is provided with a bulge or a groove which can be matched with a groove or a bulge on the inner wall of the other ring sleeve, and the cerclage strip penetrates into the ring sleeve 11 under the stress condition to be locked in the ring sleeve 11.

In the present invention, because the cerclage strip 12 is inserted into the ring sleeve 11, the radius of the ring sleeve 11 is larger than that of the cerclage strip 12, so that when the whole cerclage ring 1 is tied on the cervical wall, a certain gap is formed between the ring sleeve 11, the cerclage strip 12 and the cervical wall to ensure the blood flow in the cervical tissue, and the tissue is not necrotized. Moreover, the cerclage strip 12 is provided with one end of a bulge or a groove, and the bulge or the groove is arranged in several rows on the strip body, namely, after the first row enters the ring sleeve 11 for fixation, the diameter of the cerclage ring 1 can be reduced by 1cm, and after the second row also enters the ring sleeve 11 for fixation, the diameter of the cerclage ring 1 can be reduced by 2 cm. The values here are adjustable depending on the production of the cerclage ring.

In addition, when the stress is reduced, several sections of the cerclage strips 12 can be inserted into multiple rows, and the other sections of the cerclage strips 12 are inserted into one row, which does not affect the actual diameter reduction of the whole cerclage ring 1.

The cerclage strip 12 is made of flexible materials.

The pushing support 3 is of a bent structure, and the pushing distance of the ring closing sleeve 4 on the pushing support 3 corresponds to the radial distance of the pushing support 3 for pushing the cerclage ring 1 to contract radially. That is, the travel distance of the loop closing sleeve 4 on the pushing support 3 is proportional to the contraction diameter of the cerclage ring 1, for example, the loop closing sleeve 4 travels 4cm, and the contraction diameter of the cerclage ring 1 decreases by 1cm, which is only an example and not a limitation of the corresponding distance of the ratio, and it is also possible to travel 2cm of the loop closing sleeve 4 and decrease the contraction diameter of the cerclage ring 1 by 1cm by adjusting the bending structure of the pushing support 3 at a later stage.

The surface of the uterine suction head 6 is disc-shaped, a cavity 61 for accommodating a part of cervix uteri is formed on the surface of the uterine suction head in a concave mode, and a plurality of negative pressure generating holes 62 are evenly formed along the inner edge of the disc. A negative pressure generating pump is arranged in the cerclage device 5, and part of cervix can be absorbed in the cavity 61 by generating negative pressure. Negative pressure generation is not unlimited because after waiting for several seconds in use, the operator needs to slightly lift the cerclage outward every few seconds to sense whether the cervix can be lifted, wherein more or less mucus exists at the cervix of each patient, so that the cerclage can be lifted, and the negative pressure is not generated under the control of the button.

Of course, the negative pressure can also be generated by connecting the tail end of the cerclage device 5 with a negative pressure generating device, the negative pressure generating hole 62 arranged on the surface of the uterine suction head 6 is connected with the negative pressure generating device, and the suction force generated by the negative pressure can be controlled by the button.

The pushing seat 2 and the ring sleeve 4 are pushed by the motor.

The realization principle of the invention is as follows:

referring additionally to fig. 4, before installing the cerclage ring, the patient takes the bladder lithotomy position, carries out routine disinfection and towel laying, then protects the vagina with a vaginal dilator, extends the cervical cerclage device 5 into the vagina until the end of the cerclage device 5 is propped against the cervix, then opens the negative pressure source, a plurality of negative pressure generating holes 62 arranged on the inner edge of the disc of the uterine suction head 6 adsorb muscle tissues along the cervical orifice, when the negative pressure generating holes 62 are blocked by the partial tissues, the cerclage device 5 is lifted outwards, cuts off the negative pressure source when feeling that the cervix can be lifted outwards, and keeps the air pressure cavity connected in the negative pressure generating holes 62 from being communicated with the outside.

After the pushing seat 2 is lifted outwards for a certain distance, the pushing seat 2 is pushed to move inwards the vagina, the pushing seat 2 enables the pushing support 3 hinged to the pushing seat to extend out, the cerclage ring 1 with the semi-hooped end part is sleeved into a part needing to be cerclaged below the cervix along the cervix, then the ring closing ring 4 is pushed to move upwards along the root part of the pushing support 3, as the size of the inner diameter of the ring closing ring 4 is gradually reduced, the smaller inner diameter enables the pushing supports 3 to be closed, the pushing supports 3 are bent inwards, and therefore the cerclage ring 1 at the end part of the pushing support 3 can be stressed inwards along the radial direction. In this case, since the ring 1 is provided with the plurality of ring sleeves 11 and the ring tying strips 12 retractable into the ring sleeves 11, under the action of a force, one end of the ring tying strip 12 is inserted into the ring sleeves 11, and the protrusions or grooves at the end parts of the ring tying strips 12 are inserted into the grooves or protrusions on the inner wall of the ring sleeves and then are fixedly clamped.

Then the ring sleeve 4 is pushed back and the pushing seat 2 is pushed back, at this time, when the pushing support 3 is along the outer peripheral wall of the uterine suction head 6, the end part of the semi-hooped cerclage ring 1 moves outwards, because the cerclage ring 1 is fixed on the corresponding position of the cervix, the cerclage ring 1 can not grow, then the end part of the semi-hooped cerclage ring 1 is separated from the cerclage ring 1, at this time, the air pressure cavity is communicated with the outside, or air pressure is applied to the air pressure cavity, so that the negative pressure generating hole 62 generates negative pressure to disappear, and then the absorbed cervical orifice and part of tissues retract inwards under the action of muscles. The entire ligation is thus completed.

When the cerclage ring 1 needs to be taken down, one cerclage strip made of flexible materials can be broken through the cerclage ring taking tool. The ring-taking tool can be specially made, which is not the technical problem to be solved by the invention, and when the ring-taking tool is taken down, the visual field can be opened by using a common surgical article, such as surgical scissors and the like, through the camera, the vaginal dilator can extend, and the cerclage ring penetrates into the space between the cerclage ring and the cervical tissue to cut off the cerclage strip outwards.

Claims

1. Cervical cerclage ware, its characterized in that: the uterine cavity suction ring comprises a ring binder capable of being reduced, a plurality of pushing supports, a ring closing sleeve and a uterine suction head, wherein one end of each pushing support is used for half hooping the ring binder, and the other end of each pushing support is hinged to a pushing seat; the pushing support is of a bent structure, and the pushing distance of the closed ring sleeve on the pushing support corresponds to the radial distance of the pushing ring of the pushing support for pushing the cerclage ring to contract in the radial direction; the ring binder comprises a plurality of ring sleeves forming a ring body, and a ring binder strip which is arranged among the ring sleeves and can be retracted into the ring sleeves, wherein the ring binder strip is inserted into the ring sleeves under the stress condition and locked in the ring sleeves.

2. The cervical cerclage of claim 1, wherein: one end of the cerclage strip is fixed in the ring sleeve, and the other end of the cerclage strip is provided with a bulge or a groove which can be matched with a groove or a bulge on the inner wall of the other ring sleeve.

3. The cervical cerclage of claim 1, wherein: the surface of the uterine suction head is disc-shaped, a cavity for accommodating part of cervical tissues is formed on the surface of the uterine suction head in a concave mode, and a plurality of negative pressure generating holes are evenly formed along the inner edge of the disc.

4. The cervical cerclage of claim 1, wherein: the pushing seat and the ring sleeve are pushed by the motor control.

5. The cervical cerclage of claim 1, wherein: the cerclage device is rod-shaped.