CN211273075U

CN211273075U - Cervical dilatation device

Info

Publication number: CN211273075U
Application number: CN201922339252.8U
Authority: CN
Inventors: 龚照林; 何丽
Original assignee: Chengdu Womens and Childrens Central Hospital
Current assignee: Chengdu Womens and Childrens Central Hospital
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-08-18
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses a cervical dilator, which comprises a conduit with a cavity, wherein the outer wall of the conduit is sequentially provided with a first water bag, a second water bag and a third water bag which are all communicated with the cavity and distributed annularly from top to bottom, the first water bag and the third water bag comprise fiber layers and flexible layers positioned at two sides of the fiber layers, and the rear end of the conduit is provided with a hose communicated with the cavity; the other end of the hose is provided with a transparent liquid injection piece with an accommodating cavity, the section of the accommodating cavity is circular, the hose is communicated with the accommodating cavity, a piston is arranged in the transparent liquid injection piece, one end of the piston, far away from the hose, is provided with a connecting rod which extends out of the transparent liquid injection piece and is provided with an external thread, and one end of the transparent liquid injection piece, far away from the hose, is provided with a threaded hole matched with the external thread; the other end of connecting rod is provided with handle portion, offers order intercommunication on handle portion, connecting rod and the piston, and lead to the inhalant canal who holds the chamber, installs detachable, and be used for sealing the sealing plug of inhalant canal on the handle portion.

Description

Cervical dilatation device

Technical Field

The utility model relates to the field of medical equipment, concretely relates to cervical dilation device.

Background

Uterine cavity examination or operation such as abortion, uterine cleaning, hysteroscopy and the like in obstetrics and gynecology department all need to be performed with cervical dilatation before operation. In particular to a hysteroscope operation, which needs to expand the cervix to different degrees according to different requirements of the operation. The present uterine dilation technology generally adopts metal uterine dilation rods with sizes of 4.0-10.5 for cervical dilation. However, the metal uterine dilator is often difficult to dilate the cervix, increases the operation time of the operation, increases the related risks of infection, anesthesia and the like, and is also easy to generate complications such as uterine perforation, endometrial injury, cervical laceration, uterine cavity adhesion, infertility, bleeding and the like. For some high-risk patients, such as postmenopausal women, patients without pregnancy history, infertility, uterine cavity adhesion and cervical adhesion history, to perform uterine cavity examination or therapeutic surgery, the above risks are correspondingly increased.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned not enough among the prior art, the utility model aims at providing a cervical dilatation device, can improve the operation security when it is used.

In order to achieve the purpose of the invention, the utility model adopts the technical scheme that:

providing a cervical dilator, which comprises a catheter with a cavity, wherein the front end of the catheter is hemispherical, the outer wall of the catheter is sequentially provided with a first water bag, a second water bag and a third water bag which are communicated with the cavity and distributed annularly from top to bottom, the first water bag and the third water bag comprise a fiber layer and flexible layers positioned on two sides of the fiber layer, the second water bag is made of flexible materials, and the rear end of the catheter is provided with a hose communicated with the cavity;

the other end of the hose is provided with a transparent liquid injection piece with an accommodating cavity, the section of the accommodating cavity is circular, the hose is communicated with the accommodating cavity, a piston is arranged in the transparent liquid injection piece, one end of the piston, far away from the hose, is provided with a connecting rod which extends out of the transparent liquid injection piece and is provided with an external thread, and one end of the transparent liquid injection piece, far away from the hose, is provided with a threaded hole matched with the external thread; the other end of the connecting rod is provided with a handle part, the connecting rod and the piston are provided with water inlet channels which are communicated in sequence and lead to the accommodating cavity, and the handle part is provided with a detachable sealing plug for sealing the water inlet channels; the rear half section of the conduit and the transparent sealing element are provided with scale marks.

Furthermore, the second water bag is made of silica gel.

Furthermore, the flexible layer is made of silica gel.

Furthermore, the material of pipe is silica gel.

Furthermore, a plurality of first water injection ports are arranged between the second water bag and the cavity, and all the first water injection ports are uniformly distributed.

Further, the cavity is circular in cross-section.

Further, the flexible pipe type drainage tube further comprises a supporting core, a guide channel which is provided with an opening and is matched with the supporting core is arranged in the cavity, the opening is located at the rear end of the guide pipe, a gap is reserved between the outer side wall of the guide channel and the inner side wall of the guide pipe, and the flexible pipe is communicated with the cavity which is located between the outer side wall of the guide channel and the inner side wall of the guide pipe.

Further, a liquid pressure sensor is mounted on the hose.

The utility model has the advantages that:

this cervix uteri expanding unit utilizes the second water pocket to expand the cervix uteri, and then greatly reduced the damage to the tissue, reduced operation time, avoided adopting metal to expand uterus stick probably to bring uterus perforation, endometrium damage, cervical laceration, palace chamber adhesion, sterility out, bleeding and other complications to the security of operation has been improved.

When the sealing device is used, the sealing plug is opened firstly, then the handle part is rotated to enable the connecting rod to spirally retreat, and the piston is driven to retreat until the piston reaches the first set scale. Then vertically holding the transparent liquid injection piece (the height of the transparent liquid injection piece is larger than that of the guide pipe), injecting liquid into the accommodating cavity by using the water inlet channel (the size of the water inlet channel at the sealing plug is larger than that of the injection end of the injection container, namely the water inlet channel is communicated with the atmosphere) until the liquid level reaches the piston, and installing the sealing plug after the water inlet channel is filled with the liquid (the whole cervix dilatation device almost has no air). In the process, because the height of the transparent liquid injection part is greater than that of the catheter, and the water inlet channel is communicated with the atmosphere, the injected partial liquid can change the volumes of the first water bag, the second water bag and the third water bag into the maximum volume in a natural state.

And then putting down the transparent liquid injection piece to enable the height of the transparent liquid injection piece to be lower than that of the catheter, and then continuously rotating the handle part to enable the piston to continuously retreat to be positioned at the second scale, so that the liquid in the cavity and all the water bags returns to the accommodating cavity under the action of negative pressure and gravity. Then a part of the catheter is placed into the cervix of the patient, and the scales on the catheter are used for ensuring that the first water bag is positioned in the cervix, the second water bag 3 is positioned at the cervix and the third water bag is positioned outside the cervix. Thereafter, the handle portion is rotated in reverse so that the piston is advanced to a third set scale. At the moment, the volumes of the first water bag and the third water bag are changed into the maximum volumes under the action of liquid filling (positioning of the catheter is realized, the catheter is prevented from continuing to advance to the uterus to damage the uterus, and the catheter is also prevented from being separated from a patient), and the maximum volumes are equal to the maximum volumes of the first water bag and the third water bag in respective natural states because the first water bag and the third water bag comprise fiber layers; the second water sac expands to a first set volume under the action of liquid filling, and primary expansion of the uterine cervix is achieved. Medical personnel can be according to patient's particular case afterwards, and the handle portion is twisted in reverse wrong to intermittent type nature for piston intermittent type nature advances and then finally lies in the fourth and sets for scale department (this in-process, because first water pocket and third water pocket have reached maximum volume, its volume can not the continuation change), and then makes second gasbag intermittent type nature inflation to the second set for the volume, thereby avoided cervix expansion speed too fast, and realized comparatively accurate cervix expansion based on the scale on the transparent notes liquid piece.

Drawings

FIG. 1 is a cross-sectional view of a cervical dilation device in accordance with an exemplary embodiment;

fig. 2 is a cross-sectional view of the catheter of fig. 1 with the cervical dilation apparatus expanded;

FIG. 3 is a cross-sectional view of a catheter in another embodiment;

FIG. 4 is an enlarged view of portion A of FIG. 3;

figure 5 is a cross-sectional view of a catheter in another embodiment.

Wherein, 1, hemispherical; 2. a first water bladder; 3. a second water bladder; 4. a third water bag; 5. a conduit; 6. a cavity; 7. a hose; 8. a transparent liquid injection member; 9. a piston; 10. a threaded hole; 11. a connecting rod; 12. a handle portion; 13. a sealing plug; 14. a water inlet channel; 15. a second water injection port; 16. a cambered surface; 17. a guide channel; 18. and (4) opening.

Detailed Description

The following detailed description of the present invention will be made with reference to the accompanying drawings so as to facilitate the understanding of the present invention by those skilled in the art. It should be understood that the embodiments described below are only some embodiments of the invention, and not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step, without departing from the spirit and scope of the present invention as defined and defined by the appended claims, fall within the scope of protection of the invention.

As shown in fig. 1, the cervical dilatation device comprises a catheter 5 with a cavity 6, the front end of the catheter 5 is hemispherical 1, the outer wall of the catheter 5 is sequentially provided with a first water bag 2, a second water bag 3 and a third water bag 4 which are communicated with the cavity 6 and distributed annularly from top to bottom, the first water bag 2 and the third water bag 4 comprise fiber layers and flexible layers located on two sides of the fiber layers, the second water bag 3 is made of flexible materials, and the rear end of the catheter 5 is provided with a hose 7 communicated with the cavity 6.

A transparent liquid injection piece 8 with an accommodating cavity is installed at the other end of the hose 7, the section of the accommodating cavity is circular, the hose 7 is communicated with the accommodating cavity, a piston 9 is installed in the transparent liquid injection piece 8, a connecting rod 11 which extends out of the transparent liquid injection piece 8 and is provided with an external thread is installed at one end, away from the hose 7, of the piston 9, and a threaded hole 10 matched with the external thread is formed at one end, away from the hose 7, of the transparent liquid injection piece 8; a handle part 12 is arranged at the other end of the connecting rod 11, a water inlet channel 14 which is communicated in sequence and leads to the accommodating cavity is formed in the handle part 12, the connecting rod 11 and the piston 9, and a detachable sealing plug 13 for sealing the water inlet channel 14 is arranged on the handle part 12; the rear half section of the conduit 5 and the transparent sealing piece are provided with scale marks.

In practice, the injected liquid is typically normal saline. The material of the preferred second water pocket 3 of this scheme is silica gel simultaneously, and the material of flexible layer is silica gel, and the material of pipe 5 is silica gel to reduce the injury that probably produces the patient.

As shown in fig. 1 and 2, a plurality of first water injection ports are provided between the second water bladder 3 and the cavity 6, and all the first water injection ports are uniformly distributed, so that the second water bladder 3 is more uniformly inflated. A plurality of second water injection ports 15 are formed between the first and

second water bladders

2 and 3 and the cavity 6, and all the second water injection ports 15 are uniformly distributed, so that the first and

second water bladders

2 and 3 can be rapidly expanded to the maximum volume.

In another embodiment, the cavity 6 is circular in cross-section. As shown in fig. 3 and 4, the first water bag 2 is located on a groove formed in the outer wall of the catheter 5, and the connecting portion of the groove and the outer wall of the catheter 5 is an arc surface 16, so that the first water bag 2 is adsorbed and completely located in the groove under the action of negative pressure and gravity in the process, and the implantation of the catheter 5 is facilitated, and the possible damage to the patient is further reduced.

In yet another embodiment, as shown in fig. 5, the cervical dilating apparatus further comprises a support core, the support core is a support core in a conventional cervical dilating balloon, a guide channel 17 having an opening 18 and matching with the support core is arranged in the cavity 6, the opening 18 is located at the rear end of the catheter 5, a gap is arranged between the outer side wall of the guide channel 17 and the inner side wall of the catheter 5, and the hose 7 is communicated with the cavity 6 between the outer side wall of the guide channel 17 and the inner side wall of the catheter 5. The clearance makes the 6 ring directions of cavity that are located between guide way 17 lateral wall and the pipe 5 inside wall communicate, combines a plurality of first water filling ports or the setting of second water filling port 15, realizes evenly annotating liquid fast.

When the cervical dilator is applied, the guide wire of the support core is placed into the guide channel 17 through the opening 18, so that the front end of the guide wire is contacted with the front end of the guide channel 17, then the guide wire is fixed by matching the joint of the support core with the opening 18, the guide wire positioned in the guide channel 17 is prevented from generating large displacement relative to the guide channel 17, and the support core is further utilized to increase the controllability during the operation (namely, the controllability in the process of placing the cervical dilator in the cervical dilator).

Meanwhile, a liquid pressure sensor is arranged on the hose 7 and used for collecting and displaying the pressure of liquid in the hose, and the pressure is equal to the pressure of the liquid in the second water bag 3, so that the influence on the health of the patient caused by blind liquid injection of the cervix of the patient for expansion under the condition that the pressure is not clear by medical staff is avoided. The liquid pressure sensor is a miniature integrated digital display liquid pressure sensor, and the model number of the liquid pressure sensor is PT 505.

Claims

1. The cervix dilatation device is characterized by comprising a catheter (5) with a cavity (6), wherein the front end of the catheter (5) is hemispherical (1), the outer wall of the catheter (5) is sequentially provided with a first water bag (2), a second water bag (3) and a third water bag (4) which are communicated with the cavity (6) and distributed annularly from top to bottom, the first water bag (2) and the third water bag (4) comprise fiber layers and flexible layers positioned on two sides of the fiber layers, the second water bag (3) is made of flexible materials, and the rear end of the catheter (5) is provided with a hose (7) communicated with the cavity (6);

the other end of the hose (7) is provided with a transparent liquid injection piece (8) with an accommodating cavity, the cross section of the accommodating cavity is circular, the hose (7) is communicated with the accommodating cavity, a piston (9) is arranged in the transparent liquid injection piece (8), one end, far away from the hose (7), of the piston (9) is provided with a connecting rod (11) which extends out of the transparent liquid injection piece (8) and is provided with an external thread, and one end, far away from the hose (7), of the transparent liquid injection piece (8) is provided with a threaded hole (10) matched with the external thread; a handle part (12) is arranged at the other end of the connecting rod (11), a water inlet channel (14) which is communicated in sequence and leads to the accommodating cavity is formed in the handle part (12), the connecting rod (11) and the piston (9), and a detachable sealing plug (13) for sealing the water inlet channel (14) is arranged on the handle part (12); and scale marks are arranged on the rear half section of the conduit (5) and the transparent sealing element.

2. The cervical dilation device according to claim 1, wherein the second water bladder (3) is made of silica gel.

3. The cervical dilation device of claim 1 wherein the flexible layer is made of silicone.

4. The cervical dilation device according to claim 1, wherein the conduit (5) is made of silicone.

5. Cervical dilation device according to claim 1 characterized in that between the second water bladder (3) and the cavity (6) there are a plurality of first water injection ports, all of which are evenly distributed.

6. Cervical dilation device according to claim 1 characterized in that said cavity (6) is circular in cross section.

7. The cervical dilation device according to claim 1, further comprising a support core, wherein a guide channel (17) having an opening (18) is disposed in the cavity (6) and cooperating with the support core, the opening (18) is located at the rear end of the conduit (5), a gap is provided between the outer side wall of the guide channel (17) and the inner side wall of the conduit (5), and the hose (7) is communicated with the cavity (6) between the outer side wall of the guide channel (17) and the inner side wall of the conduit (5).

8. Cervical dilation device according to any one of claims 1 to 7, characterized in that said hose (7) is fitted with a liquid pressure sensor.