Clinical cervical dilation device for obstetrics and gynecology department

Abstract

The utility model belongs to the technical field of medical instruments, and relates to a clinical cervical dilation device for gynaecology and obstetrics, which comprises a dilation rod body made of polyvinyl formal, and an inner core capable of being pulled out from the tail end of the dilation rod body is arranged in the dilation rod body. The cervical dilation device can be used for dilating the cervix uteri and is composed of a dilation rod body and an inner core, the inner core is installed in the dilation rod body in a sliding mode, the inner core can be pulled out from the tail end of the dilation rod body before the dilation rod body is dilated or after the dilation rod body absorbs body fluid to be dilated, and the inner core can be pulled out from the tail end of the dilation rod body after the dilation rod body absorbs body fluid to be dilated. The inner core is pulled out, so that the expanded dilation rod body can be extruded to shrink inwards, the outer diameter of the expanded dilation rod body is reduced, and the expanded dilation rod body can be pulled out of the cervix.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to a cervical dilation device for clinical use in obstetrics and gynecology. Background Art

[0002] At present, the cervical dilators commonly used in clinical practice mainly include metal rods of different diameters, dilation balloons, seaweed dilator rods, disposable dilator rods made of polymer materials, etc. Among them, seaweed dilator rods and disposable dilator rods made of polymer materials can absorb body fluids in the cervical canal and then expand to achieve the purpose of dilating the cervix.

[0003] Seaweed dilator rods are made of natural seaweed, which has the risk of breaking and is difficult to remove after expansion. Disposable dilator rods made of polymer materials are usually made of polyvinyl formal, which has good water absorption. After expansion, it dilates the cervix and is not easy to break when removed. However, after expansion in the cervix, it has irreversible degeneration. Due to the squeezing of the cervix, it is also difficult to pull it out of the cervix. Utility Model Content

[0004] The utility model aims to provide a cervical dilation device for clinical use in obstetrics and gynecology, which can be easily pulled out from the cervix.

[0005] The utility model is realized by the following technical solutions:

[0006] A cervical dilation device for clinical use in obstetrics and gynecology includes a dilation rod body made of polyvinyl formal, wherein an inner core that can be pulled out from the tail end of the dilation rod body is arranged inside the dilation rod body; the inner core is slidably installed inside the dilation rod body, and the inner core can be pulled out from the tail end of the dilation rod body before the dilation rod body expands or after it absorbs body fluids to expand. After the dilation rod body expands by absorbing body fluids, the inner core is pulled out, which can help the expanded dilation rod body to be squeezed and contracted inwardly, causing the outer diameter of the expanded dilation rod body to decrease, thereby facilitating the expansion of the expanded dilation rod body from the cervix.

[0007] Furthermore, the expansion rod body is provided with a socket extending from its tail end toward the head end, and the inner core is inserted into the socket. The inner core can slide in the socket, and the tail end of the inner core and the tail end of the expansion rod body are detachably connected by rivets. When the rivet is removed, the inner core can be pulled out from the tail end of the expansion rod body.

[0008] Furthermore, the inner core is made of a flexible metal material, which includes but is not limited to aluminum, copper, zinc, stainless steel, and tin; the flexible metal material has a certain flexibility, can be bent under force, and can maintain its shape after being bent under force. The expansion rod body made of polyvinyl formal can also be bent under force. During the cervical dilation process, the expansion rod body can be bent according to the shape of the cervical channel, conforming to the physiological curvature.

[0009] Furthermore, the outer surface of the inner core is provided with a smooth coating which facilitates separation of the inner core from the expansion rod body; the smooth coating includes but is not limited to a release agent coating, a fluoride coating, and a nano coating. Various coatings can be made by spraying, plating, and the like. The manufacturing process and materials used to provide a smooth coating on the outer surface of the metal inner core are prior art and will not be described in detail here.

[0010] Furthermore, the cross-sectional shape of the inner core includes but is not limited to oval, cross, circle, square, Y-shape and triangle.

[0011] Furthermore, the tail end of the inner core extends out of the tail end surface of the expansion rod body, and the tail end of the inner core is provided with a through groove running through from top to bottom. By clamping the tail end of the inner core with a clamp and applying force, the inner core can be pulled out from the expanded expansion rod body. The through groove at the tail end of the inner core can facilitate the clamp to clamp the inner core, or a hook can be inserted into the through groove, which can facilitate the pulling out of the inner core of the force-applying member.

[0012] Furthermore, the top surface and the bottom surface of the tail of the expansion rod body are both provided with a plurality of anti-skid grooves, so as to improve the anti-skid performance when the expansion rod is held by hand or clamped by a clip.

[0013] Furthermore, a threading hole is provided at the tail of the expansion rod body, and a tail wire is passed through the threading hole, and the tail wire has a prompting function.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The cervical dilation device can be used to dilate the cervix. It consists of an expansion rod body and an inner core. The inner core is slidably installed inside the expansion rod body. The inner core can be pulled out from the tail end of the expansion rod body before the expansion rod body expands or after it absorbs body fluids to expand. After the expansion rod body expands by absorbing body fluids, the inner core is pulled out, which can help the expanded expansion rod body to be squeezed and contracted inward, causing the outer diameter of the expanded expansion rod body to shrink, thereby facilitating the expansion rod body to be pulled out from the cervix. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional structural schematic diagram of the utility model.

[0017] Figure 2 for Figure 1Schematic diagram of the cross-sectional structure along the AA direction.

[0018] Figure 3 It is a schematic diagram of the top structure of the utility model.

[0019] Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure along the BB direction.

[0020] Figure 5 It is a schematic diagram of the cross-shaped inner core of the utility model.

[0021] Figure 6 It is a schematic diagram of the cross-sectional structure of the circular inner core in the utility model.

[0022] The names of the components in the figure are: 1. expansion rod body 2, inner core 3, plug hole 4, rivet 5, through groove 6, tail line 7, anti-slip groove 8, smooth coating. DETAILED DESCRIPTION

[0023] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0024] A cervical dilation device for clinical use in obstetrics and gynecology, such as Figures 1 to 3 As shown, it comprises an expansion rod body 1 made of polyvinyl formal and an inner core 2 made of a flexible metal material;

[0025] like Figures 1 to 3 As shown, the expansion rod body 1 is composed of an insertion portion, an expansion portion and a holding portion, which is the same as the existing polymer material disposable expansion rod structure. The tail end of the expansion rod body 1 refers to the end of the holding portion, and the head end refers to the end of the insertion portion; the expansion portion of the expansion rod body 1 is cylindrical or elliptical, and the holding portion of the expansion rod body 1 is flat; the top and bottom surfaces of the holding portion of the expansion rod body 1 are provided with a plurality of anti-slip grooves 7, which improve the anti-slip performance when held by hand or clamped with a clip, and the controllability is good; the tail of the expansion rod body 1 is provided with a threading hole, and a tail wire 6 is inserted into the threading hole, and the tail wire 6 has a prompting function; the above structure is similar to the prior art and will not be repeated here;

[0026] like Figure 1 and Figure 2 As shown, the expansion rod body 1 is provided with an insertion hole 3 extending from the tail end to the head end thereof, and the inner core 2 is inserted into the insertion hole 3. The inner core 2 can slide in the insertion hole 3, and the inner core 2 can be pulled out from the tail end of the expansion rod body 1;

[0027] like Figures 1 to 3As shown, the tail end of the inner core 2 is detachably connected to the tail end of the expansion rod body 1 by setting a rivet 4; during the use of the cervical expansion device, the inner core 2 is prevented from being separated from the expansion rod body 1 under the limiting effect of the rivet 4; when the rivet 4 is removed, the inner core 2 can be pulled out from the tail end of the expansion rod body 1;

[0028] like Figures 4 to 6 As shown, the outer surface of the inner core 2 is provided with a smooth coating 8 which is easy to separate the inner core 2 from the expansion rod body 1; the smooth coating 8 is a nano coating which is ultra-smooth, so that the inner core 2 and the wall of the hole 3 of the expansion rod body 1 have low adhesion, and the inner core 2 can be easily pulled out after the expansion rod body 1 is expanded; in addition, the smooth coating 8 can also be a release agent coating, a fluoride coating, etc., and various coatings can be made by spraying, plating, etc. The manufacturing process and materials used to set the smooth coating 8 on the outer surface of the metal inner core 2 are existing technologies and will not be repeated here.

[0029] As a preferred embodiment, in this embodiment, the inner core 2 is made of aluminum, which has good flexibility and light weight; in addition, the inner core 2 can also be made of flexible metal materials such as copper, zinc, stainless steel, tin, etc. The flexible metal material has a certain flexibility and can be bent under force and can maintain its shape after being bent under force. The expansion rod body 1 made of polyvinyl formal can also be bent under force. During the cervical dilation process, the expansion rod body 1 can be bent according to the shape of the cervical channel, conforming to the physiological curvature.

[0030] As a preferred embodiment, in this embodiment, Figure 1 , Figure 2 and Figure 4 As shown, the cross section of the inner core 2 is elliptical, which can ensure structural strength and facilitate pulling out; correspondingly, the shape of the insertion hole 3 opened on the expansion rod body 1 matches the cross section shape of the inner core 2;

[0031] In addition, if Figure 5 and Figure 6 As shown, the cross section of the inner core 2 may also be a cross or a circle; the cross section of the inner core 2 may also be a square, a Y-shape, a triangle, or the like.

[0032] As a preferred embodiment, in this embodiment, Figure 1 and Figure 2 As shown, the inner core 2 is composed of a head section and a tail section, wherein the tail section is flat, a part of the tail section is located in the holding portion of the expansion rod body 1, the tail end of the tail section extends out of the tail end surface of the expansion rod body 1, and a through groove 5 running through the tail end of the inner core 2 is provided. The inner core 2 can be pulled out of the expanded expansion rod body 1 by applying force by clamping the tail end of the inner core 2 with a clamp, and the through groove 5 is provided at the tail end of the inner core 2 to facilitate clamping the inner core 2, or inserting a hook into the through groove 5, which can facilitate the force-applying member to pull out the inner core 2.

[0033] The working principle of this embodiment:

[0034] When the cervical dilation device is used for cervical dilation, the inner core 2 is installed in the dilation rod body 1, and the insertion part and the expansion part of the dilation rod body 1 are inserted into the cervix. The expansion part of the dilation rod body 1 absorbs the body fluid in the cervical canal and expands, thereby achieving the purpose of dilating the cervix.

[0035] When removing the cervical dilation device from the cervix, the holding portion of the dilation rod body 1 is clamped to fix the dilation rod body 1, and after removing the rivet 4, the tail end of the inner core 2 is clamped with a clip to pull the inner core 2 out of the insertion hole 3 of the dilation rod body 1;

[0036] After the inner core 2 is pulled out, the expanded expansion rod body 1 can be softened. The insertion hole 3 of the expansion rod body 1 is no longer filled with the inner core 2, which can help the expanded expansion rod body 1 to be squeezed and shrink inward. The aperture of the insertion hole 3 becomes smaller, which causes the outer diameter of the expanded expansion rod body 1 to shrink, thereby facilitating the extraction of the expanded expansion rod body 1 from the cervix.

Claims

1. A cervical dilation device for clinical use in obstetrics and gynecology, comprising a dilation rod body (1) made of polyvinyl formal, characterized in that: An inner core (2) which can be pulled out from the rear end of the expansion rod body (1) is arranged inside the expansion rod body (1).

2. The cervical dilation device for clinical use in obstetrics and gynecology according to claim 1, characterized in that: The expansion rod body (1) is provided with an insertion hole (3) extending from the rear end thereof toward the front end thereof, the inner core (2) is inserted into the insertion hole (3), the inner core (2) can slide in the insertion hole (3), and the rear end of the inner core (2) and the rear end of the expansion rod body (1) are detachably connected by arranging a rivet (4).

3. The cervical dilation device for clinical use in obstetrics and gynecology according to claim 2, characterized in that: The inner core (2) is made of a flexible metal material.

4. The cervical dilation device for clinical use in obstetrics and gynecology according to claim 3, characterized in that: The outer surface of the inner core (2) is provided with a smooth coating (8) which facilitates separation of the inner core (2) from the expansion rod body (1); the smooth coating (8) includes but is not limited to a release agent coating, a fluoride coating, and a nano coating.

5. The cervical dilation device for clinical use in obstetrics and gynecology according to claim 4, characterized in that: The cross-sectional shape of the inner core (2) includes but is not limited to an ellipse, a cross, a circle, a square, a Y-shape and a triangle.

6. The cervical dilation device for clinical use in obstetrics and gynecology according to claim 5, characterized in that: The tail end of the inner core (2) extends out of the tail end surface of the expansion rod body (1), and a through groove (5) penetrating from top to bottom is formed at the tail end of the inner core (2).

7. The cervical dilation device for clinical use in obstetrics and gynecology according to claim 1, characterized in that: The top surface and the bottom surface of the tail of the expansion rod body (1) are both provided with a plurality of anti-slip grooves (7).

8. The cervical dilation device for clinical use in obstetrics and gynecology according to claim 1, characterized in that: A threading hole is provided at the tail of the expansion rod body (1), and a tail wire (6) is inserted into the threading hole.

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