CN221814148U - Multi-rod-in-one telescopic cervical dilation device for obstetrics and gynecology department - Google Patents

Abstract

The utility model discloses a multi-rod-in-one telescopic cervical dilation device for obstetrics and gynecology, which comprises a mounting cylinder, a plurality of dilation rods with different diameters and a plurality of dilation telescopic mechanisms for controlling the dilation rods to stretch and retract on the mounting cylinder; the mounting cylinder body is provided with a plurality of mounting holes which are arranged in parallel and respectively correspond to a plurality of expansion rods with different diameters; the expansion rod passes through the corresponding mounting hole and is arranged in the mounting cylinder. The cervical dilation device integrates dilation rods with different sizes, not only accords with the common practice and flow of clinical cervical dilation, but also can be used for checking cervical functions, and can also be used for evaluating cervical tightness in pre-pregnancy cervical cerclage, so that the operation steps can be effectively simplified, the operation time can be reduced, and the risk of uterine perforation and infection can be reduced.

Description

A multi-rod integrated telescopic gynecological cervical dilation device

Technical Field

The utility model relates to a uterine cervical dilation device, in particular to a multi-rod integrated telescopic gynecological cervical dilation device.

Background Art

Cervical dilator is a commonly used instrument in obstetrics and gynecology, especially in hysteroscopic transurethral resection of uterine lesions. Before hysteroscopic surgery, the cervix is required to be dilated by about 10 to 10.5 mm. If cervical dilation fails, the hysteroscopic instrument cannot pass through the cervix into the uterine cavity and the surgery cannot be completed smoothly. In addition, cervical dilator is often used to measure the width of the internal cervical os during cervical function examinations. In addition, cervical dilator is often used to assess the tightness of the cervix during laparoscopic cervical cerclage before pregnancy, which means that the tightness of the cerclage band needs to be adjusted based on the slight resistance of the No. 6.5 cervical dilator. (1) In terms of dilation function, the cervical dilator currently used in clinical practice is the Hegar metal cervical dilator, which can dilate from a diameter of 31/2mm to 10mm. Dozens of dilators with similar appearance and different diameters are required. Before operation, the size must be identified and arranged in sequence. Since different models need to be frequently changed during surgery, confusion is easy to occur. Repeated grasping and changing processes can easily cause the dilator to fall off and become contaminated. The operation is cumbersome, which increases the operation time and the chance of iatrogenic infection. In addition, the surface of the metal dilator is smooth. If the operation is improper, there is a risk of uterine perforation. Other types of cervical dilators, including balloon-type cervical dilators and water-absorbing swellable cervical dilators, need to be placed for a period of time before surgery to promote cervical softening, increase the patient's pain and discomfort, and easily lead to the patient's surgical tension and fear. Long-term placement of the cervix can easily lead to ascending infection. (2) In terms of measurement function, balloon-type cervical dilators and water-swellable cervical dilators do not have a standard diameter width (i.e., starting from 31/2mm in diameter and increasing by 1/2mm to 10mm) in clinical practice. Therefore, they cannot be used for medical examinations to determine cervical function based on standardized size measurements of the width of the internal cervical os.

Utility Model Content

The purpose of the utility model is to overcome the above-mentioned problems and to provide a multi-rod-in-one telescopic gynecological cervical dilation device, which integrates dilation rods of different sizes together, which not only conforms to the common practices and processes of clinical cervical dilation, but can also be used for cervical function examination and assessment of cervical tightness during pre-pregnancy cervical cerclage, and can effectively simplify the operating steps, reduce the operating time, and reduce the risk of uterine perforation and infection.

The purpose of the utility model is achieved through the following technical solutions:

A multi-rod integrated telescopic gynecological cervical dilation device comprises a mounting cylinder, a plurality of dilation rods of different diameters, and a plurality of dilation and telescopic mechanisms for controlling the dilation rods to telescope on the mounting cylinder;

The installation cylinder is provided with a plurality of installation holes which are arranged in parallel and correspond to a plurality of expansion rods of different diameters respectively; the expansion rods are arranged in the installation cylinder through the corresponding installation holes.

The working principle of the above multi-rod integrated telescopic gynecological cervical dilation device is as follows:

During operation, according to actual needs, select an expansion rod of corresponding size, and drive the corresponding expansion rod to extend out of the installation cylinder through the expansion and telescopic mechanism, and lock it after it reaches the specified length, so that the expansion rod can be used to expand the cervix; after the expansion rod has finished working, drive the expansion rod to retract into the installation cylinder through the expansion and telescopic mechanism; when it is necessary to switch to an expansion rod of other sizes, just follow the above operation, which is not easy to be confused, and there is no need to touch the expansion end of the expansion rod, which will not cause secondary contamination of the expansion rod, can effectively simplify the operation steps, reduce the operation time, and reduce the risk of uterine perforation and infection.

In a preferred solution of the utility model, the mounting holes are provided in two groups and are respectively located at two ends of the mounting cylinder.

In a preferred embodiment of the present invention, the mounting holes are evenly arranged along the circumferential direction.

In a preferred embodiment of the present invention, an operating handle is provided on the installation cylinder.

In a preferred embodiment of the present invention, the telescopic mechanism comprises a pressing rod, a return spring, a limiter and an elastic clamping structure;

One end of the pressing rod passes through the mounting hole, and the other end of the pressing rod extends outside the mounting cylinder;

The limiting member is fixedly arranged in the inner cavity of the mounting cylinder; the expansion rod passes through the limiting member;

The elastic clamping structure comprises an elastic clamping hook, an elastic release arm and a clamping hole; the elastic clamping hook is fixedly connected between the pressing rod and the expansion rod; the clamping part is provided with an inclined pressure surface on one side close to the expansion end of the expansion rod; one end of the elastic release arm is fixedly connected to the outer side wall of the mounting cylinder, and the other end of the elastic release arm is a free release pushing part; the clamping holes are provided with two and are axially arranged on the mounting cylinder; the release pushing part of the elastic release arm is located on the outer side of the clamping hole close to the expansion end of the expansion rod;

The reset spring is sleeved on the expansion rod, and the two ends of the reset spring are respectively against the limiter and the limiter of the expansion rod. Through the above structure, in the non-extended state, the clamping part of the elastic hook is clamped in the clamping hole close to the pressing rod; when the expansion rod needs to be used, the pressing rod is driven in the corresponding direction to force the clamping part of the elastic hook to come out of the clamping hole, so that the expansion end of the expansion rod begins to extend from the installation cylinder until the clamping part of the elastic hook enters the clamping hole close to the expansion end of the expansion rod, and the reset spring deforms and stores energy in this process; the pressing rod is released, the expansion rod remains stationary, and the expansion rod is in a fully extended state at this time; when the expansion rod needs to be retracted, the elastic release arm is pressed, and the clamping part of the elastic hook is pushed away from the clamping hole through the release push part of the elastic release arm, and then the reset spring releases the potential energy to restore the deformation, driving the expansion rod to reset, until the clamping part of the elastic hook is clamped in the clamping hole close to the pressing rod again, and the expansion rod is in the original state at this time.

In a preferred embodiment of the present invention, the telescopic mechanism comprises a fixed limiter, a push rod, a pressing spring, a rotary switching member and a reset spring.

The fixed stopper is fixedly arranged in the mounting hole, and the outer side wall of the fixed stopper is provided with two guide locking bosses evenly distributed along the circumferential direction, and the guide locking bosses extend along the axial direction;

The push rod is provided with a driving part, which is provided with an axial sliding hole and an avoidance notch that cooperate with the guide locking boss, and a driving boss is provided between the axial sliding hole and the avoidance notch; the axial sliding hole, the avoidance notch and the driving boss are each provided with at least two and arranged along the circumferential direction;

The pressing spring is sleeved on the driving part of the push rod, and the two ends of the pressing spring are respectively pressed against the guide locking boss and the limiting surface of the driving part;

The rotary switching member is fixedly arranged on one end of the expansion rod, and an axial avoidance hole and a locking notch for cooperating with the guide locking boss are provided on the rotary switching member, and a reset pressure surface is provided between the axial avoidance hole and the locking notch;

The return spring is sleeved on the expansion rod, and the two ends of the return spring are respectively against the limiter and the limit part of the expansion rod;

In the retracted state, the guide locking boss is located in the axial sliding hole and the axial avoidance hole at the same time; in the extended state, the guide locking boss is located in the locking notch.

Through the above structure, the extension, locking and retraction of the expansion rod can be achieved by pressing the push rod multiple times. The specific action principle can refer to the pressing principle of a ballpoint pen.

In a preferred embodiment of the present invention, the dilator rod is provided with scales and warning lines to facilitate operation and avoid exposure leading to uterine perforation.

Compared with the prior art, the utility model has the following beneficial effects:

1. The cervical dilation device of the utility model integrates dilation rods of different sizes together, which not only conforms to the common practices and processes of clinical cervical dilation, but can also be used for cervical function examination and assessment of cervical tightness during pre-pregnancy cervical cerclage, which can effectively simplify the operation steps, reduce the operation time, and reduce the risk of uterine perforation and infection.

2. The cervical dilator of the utility model can be retracted and retracted, which can avoid contamination of the dilator and prevent the dilator with patient's body fluid from infecting the operator, thus reducing the occurrence of infection.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the three-dimensional structure of the multi-rod-in-one telescopic gynecological cervical dilation device of the present invention.

FIG. 2 is a front view of the multi-rod-in-one telescopic gynecological cervical dilation device of the present invention.

FIG3 is a cross-sectional view of the installation cylinder of the present utility model.

FIG. 4 is a front view of one embodiment of the expansion rod and the expansion and telescopic mechanism of the utility model.

FIG5 is a front view of another embodiment of the expansion rod and the expansion and telescopic mechanism of the utility model.

FIG. 6 is a front view of another embodiment of the expansion rod and the expansion and telescopic mechanism of the utility model.

DETAILED DESCRIPTION

In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is further described below in conjunction with embodiments and drawings, but the implementation methods of the utility model are not limited thereto.

Example 1

1-3, the multi-rod-in-one telescopic gynecological cervical dilation device of this embodiment includes a mounting cylinder 1, a plurality of dilation rods 2 of different diameters, and a plurality of dilation and retraction mechanisms for controlling the dilation rods 2 to retract and retract on the mounting cylinder 1; wherein, the mounting cylinder 1 is provided with an operating handle 3.

Referring to Fig. 1-3, the installation cylinder 1 is provided with a plurality of installation holes 1-1 arranged in parallel and corresponding to a plurality of expansion rods 2 of different diameters; the expansion rods 2 are passed through the corresponding installation holes 1-1 and are arranged in the installation cylinder 1. The installation holes 1-1 are evenly arranged along the circumferential direction (not shown in the figure).

Furthermore, the mounting holes 1 - 1 are provided in two groups and are respectively located at two ends of the mounting cylinder 1 .

Referring to Fig. 1-4, the telescopic mechanism comprises a pressing rod 12, a return spring 4, a limiter 5 and an elastic clamping structure; one end of the pressing rod 12 passes through the mounting hole, and the other end of the pressing rod 12 extends outside the mounting cylinder; the limiter 5 is fixedly arranged in the inner cavity of the mounting cylinder 1; the expansion rod 2 passes through the limiter 5; the return spring 4 is sleeved on the expansion rod 2, and the two ends of the return spring 4 are respectively against the limiter 5 and the limit part of the expansion rod 2; the elastic clamping structure comprises an elastic hook 6, an elastic The elastic release arm 7 and the clamping hole 1-2; the elastic hook 6 is fixedly connected between the pressing rod 12 and the expansion rod 2; the clamping part is provided with an inclined pressure surface on the side close to the expansion end of the expansion rod 2; one end of the elastic release arm 7 is fixedly connected to the outer wall of the mounting cylinder 1, and the other end of the elastic release arm 7 is a free release pushing part; the clamping holes 1-2 are provided with two and are axially arranged on the mounting cylinder 1; the release pushing part of the elastic release arm 7 is located on the outside of the clamping hole 1-2 close to the expansion end of the expansion rod 2.

When the expansion rod 2 is in the non-extended state, the engaging portion of the elastic hook 6 is stuck in the engaging hole 1-2 near the pressing rod 12; when the expansion rod 2 needs to be used, the pressing rod 12 is driven in the corresponding direction to prompt the engaging portion of the elastic hook 6 to come out of the engaging hole 1-2, so that the expanded end of the expansion rod 2 begins to extend from the mounting cylinder 1 until the engaging portion of the elastic hook 6 enters the engaging hole 1-2 near the expanded end of the expansion rod 2. During this process, the reset spring 4 deforms and stores energy; the pressing rod 12 is released, and the expansion rod 2 remains stationary, at which time the expansion rod 2 is in a fully extended state; when the expansion rod 2 needs to be retracted, the elastic release arm 7 is pressed, and the engaging portion of the elastic hook 6 is pushed away from the engaging hole 1-2 by the release pushing portion of the elastic release arm 7, and then the reset spring 4 releases the potential energy to restore the deformation, driving the expansion rod 2 to reset, until the engaging portion of the elastic hook 6 is re-stuck in the engaging hole 1-2 near the pressing rod 12, at which time the expansion rod 2 is in its original state.

1-4, the working principle of the multi-rod-in-one telescopic gynecological cervical dilation device of this embodiment is as follows:

Internal cervical dilation surgery: routinely disinfect the vulva and vagina, check the position of the uterus, use a probe to carefully explore the direction and depth of the uterus, and use a cervical dilator to dilate the cervical canal. The handheld handle is controlled by buttons. Generally, it starts from 31/2mm (3.5mm) and gradually expands to 10. Do not exceed the warning line during operation. If the cervix is tight and has poor elasticity, the dilator can be kept for a longer time to expand to 1cm of the internal cervical os.

During specific operations, according to actual needs, an expansion rod 2 of corresponding size is selected, and the corresponding expansion rod 2 is driven to extend out of the mounting cylinder 1 through the expansion and telescopic mechanism, and locked after reaching the specified length, so that the expansion rod 2 can be used to expand the cervix; after the expansion rod 2 has finished working, the expansion rod 2 is driven to retract into the mounting cylinder 1 through the expansion and telescopic mechanism; when it is necessary to switch to use an expansion rod 2 of other sizes, just follow the above operation, which is not easy to be confused, and there is no need to touch the expansion end of the expansion rod 2, which will not cause secondary contamination of the expansion rod 2, can effectively simplify the operation steps, reduce the operation time, and reduce the risk of uterine perforation and infection.

Example 2

Exploration of the width of the internal cervical os: routinely disinfect the vulva and vagina, check the position of the uterus, and use a probe to carefully explore the direction and depth of the cervical canal. Control it through buttons. Do not exceed the warning line during operation. In the absence of resistance, select the button of the corresponding model stick to measure the width of the internal cervical os to determine the function of the cervix. If the button of stick No. 6 is pressed and stick No. 6 is popped out for exploration and there is no resistance, it is suspected that the cervix is insufficiency. If the button of stick No. 8 is pressed and stick No. 8 is popped out for exploration and there is no resistance, it can be diagnosed as cervical insufficiency.

Example 3

Used to assess the tightness of the cervix during laparoscopic cervical cerclage before pregnancy: during the operation, the bladder and uterine peritoneal reflection in front of the uterus is exposed, the internal cervical os is closed by circular sutures close to the level of the internal cervical os, and the tightness of the cerclage is adjusted by passing a No. 6.5 cervical dilator with slight resistance.

Example 4

Referring to Fig. 5-6, different from the embodiment 1, the telescopic mechanism of the present embodiment comprises a fixing member 8, a push rod 9, a pressing spring 10, a rotary switching member 11 and a reset spring 4, the fixing member 8 is fixedly arranged in the mounting hole 1-1, the outer wall of the fixing member 8 is provided with two guide locking bosses evenly distributed along the circumferential direction, and the guide locking bosses extend along the axial direction; the push rod 9 is provided with a driving part, the driving part is provided with an axial sliding hole and an avoidance notch cooperating with the guide locking bosses, and a driving boss is provided between the axial sliding hole and the avoidance notch; the axial sliding hole, the avoidance notch and the driving boss are each provided with at least two and arranged along the circumferential direction; the pressing spring 10 is sleeved on the driving part of the push rod 9, and the two ends of the pressing spring 10 are respectively pressed against the limiting surfaces of the guide locking boss and the driving part; the rotary switching member 11 is fixedly arranged on one end of the expansion rod 2, and the rotary switching member 11 is provided with an axial avoidance hole and a locking notch for cooperating with the guide locking boss, and a reset pressure surface is provided between the axial avoidance hole and the locking notch; the reset spring 4 is sleeved on the expansion rod 2, and the two ends of the reset spring 4 are respectively pressed against the limiting member 5 and the limiting part of the expansion rod 2; in the retracted state, the guide locking boss is simultaneously located in the axial sliding hole and the axial avoidance hole; in the extended state, the guide locking boss is located in the locking notch.

Through the above structure, the extension, locking and retraction of the expansion rod 2 can be achieved by pressing the push rod 9 multiple times. The specific action principle can refer to the pressing principle of pressing a ballpoint pen.

The above is a preferred implementation mode of the present invention, but the implementation mode of the present invention is not limited by the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims (7)

1. The multi-rod integrated telescopic cervical dilation device for obstetrics and gynecology department is characterized by comprising a mounting cylinder, a plurality of dilation rods with different diameters and a plurality of dilation telescopic mechanisms for controlling the dilation rods to stretch and retract on the mounting cylinder;

The mounting cylinder body is provided with a plurality of mounting holes which are arranged in parallel and respectively correspond to a plurality of expansion rods with different diameters; the expansion rod passes through the corresponding mounting hole and is arranged in the mounting cylinder.

2. The multi-rod in one telescopic cervical dilation device of claim 1, wherein the mounting holes are provided in two groups and are respectively positioned at two ends of the mounting cylinder.

3. A multiple-rod-in-one telescopic cervical dilation device for obstetrics and gynecology department according to claim 1 or 2, wherein the mounting holes are uniformly arranged along the circumferential direction.

4. The multi-rod in one telescopic cervical dilation device of claim 1, wherein the mounting cylinder is provided with an operating handle.

5. The multi-rod in one telescopic cervical dilation device of gynaecology and obstetrics as claimed in claim 1 wherein the telescopic mechanism includes a pressing rod, a return spring, a limiting member and an elastic clamping structure;

One end of the pressing rod passes through the mounting hole, and the other end of the pressing rod extends out of the mounting cylinder;

the limiting piece is fixedly arranged in the inner cavity of the mounting cylinder body; the expansion rod passes through the limiting piece;

The elastic clamping structure comprises an elastic clamping hook, an elastic release arm and a clamping hole; the elastic clamping hook is fixedly connected between the pressing rod and the expansion rod; one side of the clamping part of the elastic clamping hook, which is close to the expansion end of the expansion rod, is provided with an inclined pressure-bearing surface; one end of the elastic release arm is fixedly connected to the outer side wall of the mounting cylinder body, and the other end of the elastic release arm is a free release pushing part; the clamping holes are arranged in two and are axially arranged on the mounting cylinder body; the release pushing part of the elastic release arm is positioned at the outer side of the clamping hole close to the expansion end of the expansion rod;

The reset spring is sleeved on the expansion rod, and two ends of the reset spring respectively prop against the limiting part of the limiting part and the limiting part of the expansion rod.

6. The multi-rod in one telescopic cervical dilation device of claim 1, wherein the telescopic mechanism comprises a fixed limiting member, a push rod, a pressing spring, a rotary switching member and a return spring,

The fixed limiting piece is fixedly arranged in the mounting hole, two guide locking bosses which are uniformly distributed along the circumferential direction are arranged on the outer side wall of the fixed limiting piece, and the guide locking bosses extend along the axial direction;

The push rod is provided with a driving part, the driving part is provided with an axial sliding hole and an avoidance notch which are matched with the guide locking boss, and a driving boss is arranged between the axial sliding hole and the avoidance notch; the axial sliding hole, the avoidance notch and the driving boss are at least two and are arranged along the circumferential direction;

The pressing spring is sleeved on the driving part of the push rod, and two ends of the pressing spring are respectively abutted against the guide locking boss and the limiting surface of the driving part;

The rotary switching piece is fixedly arranged at one end part of the expansion rod, an axial avoidance hole and a locking notch which are matched with the guide locking boss are formed in the rotary switching piece, and a reset pressure surface is arranged between the axial avoidance hole and the locking notch;

The reset spring is sleeved on the expansion rod, and two ends of the reset spring respectively prop against the limiting part of the limiting part and the limiting part of the expansion rod;

In a retraction state, the guide locking boss is simultaneously positioned in the axial sliding hole and the axial avoiding hole; in the extended state, the guide locking boss is located in the locking notch.

7. The multi-rod in one telescopic cervical dilation device of claim 1, wherein the dilation rod is provided with graduations and warning lines.