Cervical dilator with air bag

Abstract

The cervical dilator comprises a handle and a rod body, the rod body is sleeved with a balloon used for blocking the vagina, the balloon is of an annular structure and comprises elastic hoops on the two sides and a balloon body in the middle, the rod body is provided with an annular groove, the elastic hoops are embedded into the annular groove, and the balloon body is provided with an air inlet and an air outlet. The rod body is of a hollow structure, an injection opening communicated with an inner cavity of the rod body is formed in the end of the handle, and a through hole is formed in the annular groove and located between the elastic hoops on the two sides. By means of the design of the detachable balloon, on the basis of providing vagina plugging, reusability of equipment is guaranteed, compared with a traditional disposable balloon dilator, only the balloon needs to be replaced in each operation, the dilator body can be reused after being disinfected, and therefore medical resources are saved, and operation cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, and particularly relates to a cervical dilator with an air bag. BACKGROUND

[0002] In gynecological laparoscopic surgery, especially in the process of hysterectomy, CO2 gas is conventionally used to fill the abdominal cavity to make the abdominal cavity swell so as to facilitate operation. However, after hysterectomy, the vaginal stump needs to be sutured under laparoscopy, at which time the abdominal cavity and the vaginal stump are in communication with the outside world, resulting in air leakage from the abdominal cavity and insufficient air pressure in the abdominal cavity, which seriously affects the operation. The method of stuffing the vaginal orifice with salt yarn is usually used to solve the problem of air leakage, but the air tightness is poor, and there is still air leakage, which affects the clarity of the surgical field and the operation efficiency.

[0003] The existing disposable balloon dilator can solve part of the air leakage problem, but the whole is discarded after use and cannot be reused, causing waste of resources. The metal cervical dilator is a medical instrument commonly used in gynecological and obstetrical surgery, which is mainly used for dilating the cervix to facilitate various uterine cavity operations, such as artificial abortion, labor induction, diagnostic curettage, hysteroscopy examination and treatment, etc., and can be used repeatedly. If the metal cervical dilator is modified to have a leak stopping function, it will inevitably have a quick and convenient effect on the operation of hysterectomy by medical personnel.

[0004] Therefore, it is urgent to design a metal cervical dilator with an air bag. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a cervical dilator with an air bag, which can effectively block the vagina, prevent air leakage from the abdominal cavity, and be reusable, saving resources.

[0006] The utility model solves the above problems by the following technical scheme: a cervical dilator with an air bag, comprising a handle and a rod body, the rod body is sleeved with a balloon for blocking the vagina, the balloon adopts a ring structure, which comprises elastic hoops on both sides and a balloon body in the middle, the rod body is provided with a ring groove, the elastic hoops are embedded in the ring groove, the rod body adopts a hollow structure, the end of the handle is provided with an injection port in communication with the inner cavity of the rod body, a through hole is formed in the ring groove, and the through hole is arranged between the elastic hoops on both sides.

[0007] Preferably, a tension ring is arranged in the middle of the balloon body, the elastic modulus of the tension ring is large, and only a slight deformation occurs when the balloon body is inflated, so that the inflated balloon body is divided into two inflated parts.

[0008] Preferably, the cross section of the ring groove is trapezoidal, and the elastic hoops are embedded in the ring groove in matched relation with the trapezoidal cross section of the ring groove.

[0009] Preferably, the edge of the annular groove is rounded, and the elastic ring is provided with a covering edge matching the rounded profile.

[0010] Preferably, the balloon has an outer diameter smaller than the diameter of the annular groove before inflation, and the balloon is in contact with the vaginal wall to form a seal after inflation.

[0011] Preferably, the outer surface of the balloon is provided with a plurality of protrusions.

[0012] Preferably, the injection port is provided with a plug.

[0013] Preferably, the rod body is provided with a smooth rod head at one end, and the rod head is conical or cylindrical.

[0014] Preferably, the rod body is provided with an arc segment.

[0015] Compared with the prior art, the present application has the following advantages and effects:

[0016] The cervical dilator with the air bag has reasonable structure, is convenient to use, and can effectively solve the problem of abdominal cavity gas leakage. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of the cervical dilator of the present application.

[0018] Figure 2 is a front view of the cervical dilator of the present application.

[0019] Figure 3 is a schematic diagram of the working principle of the cervical dilator of the present application.

[0020] Figure 4 is a partial sectional view of the injection port of the cervical dilator of the present application.

[0021] Figure 5 is a schematic diagram of the state of the balloon before inflation of the present application.

[0022] Figure 6 is a schematic diagram of the state of the balloon after inflation of the present application.

[0023] Figure number: handle 1, injection port 11, plug 12, threading hole 13, thin wire 14, rod body 2, ring groove 21, through hole 22, rod head 23, curved arc segment 24, balloon 3, elastic ring 31, edge 311, balloon body 32, tension ring 321, convex structure 322, cervical clamp 41, laparoscope 42, wrinkle 43. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail below in combination with the drawings and by examples, and the following examples are the explanation of the utility model, and the utility model is not limited to the following examples.

[0025] Example 1:

[0026] Reference Figure 1 - Figure 6 In this embodiment, a cervical dilator with a balloon is involved, which is particularly used for plugging the vagina to prevent abdominal cavity gas leakage, and specifically comprises a handle 1 and a rod body 2, the rod body 2 is sleeved with a balloon 3 for plugging the vagina, the balloon 3 adopts a ring structure, which comprises two elastic rings 31 on the sides and a balloon body 32 in the middle, the rod body 2 is provided with a ring groove 21, the elastic ring 31 is embedded in the ring groove 21, the rod body 2 adopts a hollow structure, the end of the handle 1 is provided with an injection port 11 which is in communication with the internal cavity of the rod body 2, the ring groove 21 is provided with a through hole 22, and the through hole 22 is arranged between the two elastic rings 31.

[0027] Specifically, in this embodiment, the balloon 3 can be filled with gas, liquid and other media to expand, and the embodiment takes the air as an example for illustration. The balloon 3 of the utility model is a detachable structure, before the hysterectomy surgery, the balloon 3 is sleeved on one end of the rod body 2, and is dragged to embed the balloon 3 in the groove on the rod body 2, so as to complete the assembly between the balloon 3 and the dilator. During the hysterectomy surgery, first of all, the dilator sleeved with the balloon 3 is inserted into the vagina of the patient, referring to Figure 3 and Figure 5 , ensure that the rod body 2 is located at a proper position in the vagina, then gas is injected into the balloon 3 through the injection port 11 to make the balloon 3 expand, referring to Figure 6 When the gas is injected, the balloon 3 gradually expands and adheres to the vaginal wall, so as to form an effective plugging to prevent the gas in the abdominal cavity from leaking, maintain the abdominal cavity gas pressure, and facilitate the medical staff to suture the vaginal stump under the laparoscope 42.

[0028] The utility model provides a kind of structure reasonable, convenient to use, can effectively solve the cervical dilator of air bag with abdominal cavity air leakage problem.It is designed by detachable balloon 3, on the basis of providing vaginal plugging, also ensure the reusability of equipment, compared with traditional disposable balloon 3 dilator, only need to replace balloon 3 when each operation, dilator main body can be reused after sterilization, so as to save medical resources, reduce the cost of operation.

[0029] Referring to Figure 5 And Figure 6 The elastic modulus of the tension ring 321 arranged in the middle of the balloon body 32 is large, and only a slight deformation occurs when the balloon body 32 is inflated, so that the inflated balloon body 32 is divided into two inflation parts, and the tension ring 321 can bind the balloon body 32 in the ring groove 21 to avoid the balloon body 32 from being separated from the ring groove 21. In addition, due to the presence of the wrinkle 43 part of the vaginal wall, two inflation parts are adopted, so that the two inflation parts clamp the wrinkle 43 part of the inner wall of the vagina after inflation, better fixation of the balloon body 32 is achieved, and thus the plugging effect is improved.

[0030] The cross section of the ring groove 21 is trapezoidal, the elastic ring 31 is matched with the trapezoidal cross section of the ring groove 21 and embedded in the ring groove 21, and the connection stability between the balloon 3 and the groove of the rod body 2 is ensured. The edge of the ring groove 21 adopts a round corner transition, and the elastic ring 31 is provided with a binding 311 matched with the round corner profile, which can avoid scratching the vaginal wall when the rod body 2 is inserted into the vagina, and improve the safety of the operation.

[0031] The outer diameter of the balloon 3 before inflation is smaller than the side diameter of the ring groove 21 of the rod body 2, so that the balloon 3 before inflation is completely accommodated in the ring groove 21, and the balloon body 32 after inflation is in close contact with the vaginal wall to form plugging from the ring groove 21. The structure of the rod body 2 is more smooth and consistent, and such design ensures that the balloon 3 does not protrude out of the rod body 2 in the uninflated state, so that the balloon body 32 that has not been inflated does not directly contact the vaginal wall during the insertion of the rod body 2 into the vagina, reducing the operation resistance, thereby facilitating the operator to smoothly insert the cervical dilator into the vagina.

[0032] The outer surface of the balloon 3 is arranged with a plurality of protruding structures 322, the balloon body 32 after inflation is in close contact with the vaginal wall to form plugging from the ring groove 21, the friction with the vaginal wall is increased, and the stability of plugging is improved. These protruding structures 322 make the balloon 3 have a larger contact area with the vaginal wall after inflation, so as to form a stronger friction, further prevent the balloon 3 from sliding due to external force during the operation, and ensure the reliability of the plugging effect.

[0033] The injection port 11 is matched with the plug 12, the balloon 3 is inflated to block the vagina, the plug 12 is used to block the injection port 11 after the gas injection is completed, so that the balloon 3 maintains the inflated state, at this time, the vaginal stump is sutured, the plug 12 is removed after the suture is completed, the gas in the balloon 3 is discharged, so that the balloon 3 returns to the un-inflated state, and then the rod body 2 is slowly taken out.

[0034] The rod body 2 is provided with a smooth rod head 23 at one end, the rod head 23 is conical or cylindrical, on the one hand, the insertion resistance of the rod body 2 is reduced, the uterine cervix is expanded, on the other hand, the smooth rod head 23 can conveniently sleeve the balloon 3 on the rod body 2, so that the installation process of the balloon 3 is more smooth. The rod body 2 is provided with a bending arc segment 24, the position and angle of the rod head 23 can be adjusted in the operation through the handle 1, and the operation flexibility of the dilator is increased.

[0035] The above in the specification is only an example of the utility model. The skilled in the art to which the utility model belongs can make various modifications or supplements or adopt similar ways to replace the described specific embodiments, as long as the content of the specification of the utility model or the range defined by the claims is not deviated or exceeded, which shall belong to the protection range of the utility model.

Claims

1. A cervical dilator with an airbag, comprising a handle and a rod, characterized in that: The rod body is equipped with a balloon for blocking the vagina. The balloon adopts an annular structure, which includes elastic ring hoops on both sides and a balloon body in the middle. The rod body is provided with an annular groove, and the elastic ring hoop is embedded in the annular groove. The rod body adopts a hollow structure, and the end of the handle is provided with an injection port connected to the internal cavity of the rod body. A through hole is provided in the annular groove, and the through hole is provided between the elastic ring hoops on both sides.

2. The cervical dilator with an airbag according to claim 1, characterized in that: A tensioning ring is provided in the middle of the bladder. The elastic modulus of the tensioning ring is large and only a slight deformation occurs when the bladder expands, thereby dividing the expanded bladder into two expansion parts.

3. The cervical dilator with an airbag according to claim 2, characterized in that: The cross section of the annular groove is trapezoidal, and the elastic ring hoop is adapted to the annular groove of the trapezoidal cross section and embedded in the annular groove.

4. The cervical dilator with an airbag according to claim 3, characterized in that: The edge of the annular groove adopts a rounded transition, and the elastic hoop is provided with an edge that is adapted to the rounded contour.

5. The cervical dilator with an airbag according to claim 4, characterized in that: The outer diameter of the balloon before expansion is smaller than the diameter of the annular groove side of the rod body. After expansion, the balloon body adheres to the vaginal wall from the annular groove to form a blockage.

6. The cervical dilator with an airbag according to claim 5, characterized in that: The outer surface of the balloon is arranged with a plurality of protrusion structures.

7. The cervical dilator with an airbag according to claim 6, characterized in that: The injection port is snap-fitted and equipped with a plug.

8. The cervical dilator with an airbag according to claim 1, characterized in that: One end of the rod body is provided with a smooth rod head, which is conical or cylindrical.

9. The cervical dilator with an airbag according to claim 1, characterized in that: The rod body is provided with a curved arc segment.

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