CN211068677U - Uterine dilator with variable diameter - Google Patents

Abstract

The utility model provides a diameter variable expands palace stick, including sleeve, push rod and fixed cover, fixed cover suit is in the outside rear end position department of sleeve, leaves the annular space between fixed cover and sleeve, and the sleeve includes just to two semi-ring bodies that set up, is equipped with the damped damping mechanism to this semi-ring body radial outside removal between each semi-ring body and fixed cover, push rod front end cartridge extremely hold the intracavity, be equipped with a radial position guiding mechanism between each semi-ring body and push rod. A diameter variable expands palace stick, set up push rod and diameter variable sleeve structure, put the diameter size through the push rod change sleeve, realized that the adjustment expands palace stick diameter size in the human body, reach cervical increase purpose, avoid the damage that repetitious operations brought the cervix, reduce patient's uncomfortable sense to furthest protection cervix is healthy.

Description

Uterine dilator with variable diameter

Technical Field

The utility model belongs to the field of medical equipment, especially, relate to a diameter variable expands palace stick.

Background

In some gynecological operations, such as uterine cleaning operation, a uterine cervix is firstly expanded to a required operation size by using a uterine dilator, and uterine dilation operation is performed in a gradual increasing mode, so that the conventional uterine dilator adopts a series of modes that the diameter is gradually increased from 3mm, and during specific operation, the uterine cervix is gradually and rigidly increased by using different-diameter uterine dilators from small to large, and the repeated operation brings great discomfort to a patient, and easily scratches the uterine cervix and brings pain to the patient.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a uterine dilating rod with a variable diameter to avoid the damage to the cervix caused by multiple gradual uterine dilating operations.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

The utility model provides a diameter variable expands palace stick, includes sleeve, push rod and fixed cover, fixed cover suit leaves the annular space in the outside rear end position department of sleeve, fixed cover and sleeve within a definite time, the sleeve includes just to two semi-rings bodies that set up, and two semi-rings body locks form the appearance chamber that supplies push rod axial displacement, are equipped with the damped damping mechanism of radial outside removal to this semi-ring body between each semi-ring body and fixed cover, push rod front end cartridge extremely hold the intracavity, are equipped with a radial position guiding mechanism between each semi-ring body and push rod.

Further, radial position guiding mechanism includes that the bulge of half-ring body medial surface sets up a wedge is protruding to and the push rod side is sunken to be set up, with the protruding portion of dodging that corresponds of this wedge, the protruding setting of wedge is in its corresponding portion position department of dodging, the protruding slip inclined plane setting of this wedge is in the one side that deviates from this semicircle front end, dodge the portion be equipped with one rather than correspond the protruding propelling movement inclined plane that goes up the slip inclined plane and match of wedge.

Furthermore, the two wedge-shaped protrusions are sequentially arranged along the axial direction of the sleeve, and the distance between one pushing inclined plane and the corresponding sliding inclined plane is different from the distance between the other pushing inclined plane and the other sliding inclined plane.

Further, damping mechanism includes the stand that semi-ring body lateral surface front end protrusion set up to and the fixed cover medial surface corresponds the blind hole that the stand set up, is equipped with the spring in the blind hole, stand cartridge to it corresponds in the blind hole, this stand compression spring setting.

Furthermore, the front end of the push rod is provided with a limiting part which is matched with the wedge-shaped bulge and prevents the push rod from falling off, and the limiting part is of a disc structure.

Furthermore, a convex arc-shaped plate is sealed at the front end of the semi-ring body, and the two convex arc-shaped plates form a hemispherical structure after the two semi-ring bodies are buckled.

Compared with the prior art, the utility model discloses a diameter variable expands palace stick has following advantage:

A diameter variable expands palace stick, set up push rod and diameter variable sleeve structure, change sleeve diameter size through the push rod, realized that the adjustment expands palace stick diameter size in the human body, reach cervical increase purpose, avoid the damage that multiple operation brought the cervix, reduce patient's uncomfortable sense to furthest protection cervix is healthy.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

FIG. 1 is a front view of a uterine dilator with a changeable diameter according to the present embodiment;

3 FIG. 3 2 3 is 3 a 3 view 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3

FIG. 3 is a perspective view of the half ring body of the present embodiment;

Fig. 4 is a structure diagram of the push rod in the present embodiment.

Description of reference numerals:

1-a push rod; 11-an escape portion; 111-push ramp; 12-a limiting part; 13-a grip portion; 2-hemicyclic body; 21-a wedge-shaped protrusion; 211-sliding ramp; 22-upright post; 23-an arc-shaped plate; 3, fixing a sleeve; 4-a spring.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and 2, a diameter-variable uterus dilating rod comprises a sleeve, a push rod 1 and a fixed sleeve 3, wherein the fixed sleeve 3 is sleeved at the rear end position outside the sleeve, an annular space is reserved between the fixed sleeve 3 and the sleeve, the sleeve is split and comprises two semi-annular bodies 2 which are opposite and symmetrically arranged, for convenience of description, the two semi-annular bodies 2 are in a position relation that one semi-annular body is arranged at a position right above the other semi-annular body, the two semi-annular bodies 2 are buckled to form a circular hole-shaped containing cavity for the push rod 1 to axially move, because the annular space is reserved between the semi-annular body 2 and the fixed sleeve 3, the semi-annular bodies 2 can move outwards along the radial direction of the semi-annular bodies, namely the semi-annular body 2 at the upper position can vertically move upwards, the semi-annular body 2 at the lower position can vertically move downwards, and each semi-annular body has a radial displacement which is the, the diameter of the sleeve is changed by changing the distance between the two half-rings 2, so that the requirement of cervical amplification is met. In the embodiment, the diameter of the two half ring bodies 2 after being buckled is set to be 5-6mm, and the state is the initial state of the uterine dilating rod and is suitable for the slightly dilated cervix, so that the uterine dilating rod does not stimulate a human body when being placed into the cervix. In this embodiment, a damping mechanism is disposed between each semi-ring body 2 and the fixing sleeve 3, and the semi-ring body 2 and the fixing sleeve 3 are relatively fixed by the damping mechanism. Push rod 1 is the cylinder structure, and its front end cartridge extremely hold the intracavity, push rod removal space is left to push rod 1 front end and sleeve front end, prevents to appear that push rod 1 front end is stretched out the overlength by the sleeve and is caused the injury to the uterus, for guaranteeing push rod 1 and remove straightness nature, in this embodiment, push rod 1 side and the 2 medial surfaces of hemizonid are hugged closely, and the inboard face of sleeve plays the guide effect to push rod 1 removal promptly. A radial position adjusting mechanism is arranged between each semi-ring body 2 and the push rod 1, and the radial position of the semi-ring body 2 is changed through the radial position adjusting mechanism.

In this embodiment, as shown in fig. 3 and 4, the radial position adjusting mechanism includes a wedge-shaped protrusion 21 that the inner side surface of the semicircular body 2 is protruded, and an avoiding portion 11 that is concavely disposed on the outer side surface of the push rod 1 and corresponds to the wedge-shaped protrusion 21, the height of the wedge-shaped protrusion 21 is smaller than the width of the annular space, the sliding inclined surface 211 of the wedge-shaped protrusion 21 is disposed on one side of the sliding inclined surface deviating from the front end position of the semicircular body 2, the wedge-shaped protrusion 21 is disposed on the position of the avoiding portion 11 corresponding thereto, the avoiding portion 11 may be a groove structure, or a plane structure milled on the side surface of the push rod 1, and the avoiding portion 11 only needs to perform an avoiding function on the wedge. The avoiding part 11 is provided with a pushing inclined surface 111 matched with the sliding inclined surface 211 on the corresponding wedge-shaped protrusion 21 at a position of one side far away from the front end of the push rod 1. During the concrete operation, put into cervical position with this uterus expanding stick front end, hold solid fixed ring 3 in one hand, then another hand promotes push rod 1 forward, push rod 1 moves forward relative to the sleeve this moment, propelling movement inclined plane 111 moves rather than corresponding slip inclined plane 211, slip inclined plane 211 is pushed up the lift gradually under propelling movement inclined plane 111 effect, the relative push rod 1 radial position of hemicycle body 2 changes gradually, thereby the cervix is expanded the increase gradually, when push rod 1 moves to its side and wedge arch 21 medial surface (i.e. wedge arch 21 deviates from its one side that corresponds hemicycle body 2) and hugs closely, the radial position variation of hemicycle body 2 is the biggest, the cervix is enlarged to the biggest this moment. For further guaranteeing the cervical dilatation effect, in this embodiment, the side (the medial surface of the wedge-shaped protrusion 21) that the wedge-shaped protrusion 21 deviates from the corresponding hemicycle body 2 is the arc surface structure that the indent and the push rod 1 side correspond, after the radial position of the hemicycle body 2 is adjusted, the medial surface of the wedge-shaped protrusion 21 on the hemicycle body 2 is tightly attached to the push rod side, and the hemicycle body 2 is the axial level setting state at this moment, so that the cervical integral strutting effect is realized. In order to push the push rod 1 forward, a holding part 13 is arranged at the rear end of the push rod.

In this embodiment, in order to realize the gradual cervical dilation, the two wedge-shaped protrusions 21 are sequentially arranged along the axial direction of the sleeve, and the distance from one pushing inclined plane 111 to the corresponding sliding inclined plane 211 is different from the distance from the other pushing inclined plane 111 to the other sliding inclined plane 211. The structure realizes that the radial position transformation of the two semi-ring bodies 2 is completed non-simultaneously, namely the position change of the two semi-ring bodies is performed gradually, firstly, the position of one semi-ring body 2 is changed, and then, the position of the other semi-ring body 2 is changed. The uterus dilating mode reduces the discomfort of the patient and improves the comfort level of the operation.

In this embodiment, the damping mechanism includes the stand 22 that the vertical direction protrusion of the front end set up in the lateral surface of the hemicycle body 2 to and the blind hole that the fixed cover 3 medial surface should set up corresponding to stand 22, be equipped with spring 4 in the blind hole, stand 22 cartridge is to its corresponding blind hole in, and this stand 22 compression spring 4 sets up.

In this embodiment, the front end of the push rod 1 is provided with a limiting portion 12 which is matched with the wedge-shaped protrusion 21 and prevents the push rod 1 from falling off from the sleeve, and the limiting portion 12 is of a disc structure. This construction ensures that the push rod 1 is mounted in the sleeve in a perfect condition.

In this embodiment, in order to further reduce the discomfort of the patient during the operation, the front end of the half-ring body 2 is sealed with a convex arc-shaped plate 23, and after the two half-ring bodies 2 are fastened, the two convex arc-shaped plates 23 form a hemispherical structure.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A uterine dilating rod with a variable diameter is characterized in that: including sleeve, push rod (1) and fixed cover (3), fixed cover (3) suit is in sleeve outside rear end position department, leaves the annular space between fixed cover (3) and sleeve, the sleeve is including just to two semi-rings body (2) that set up, and two semi-rings body (2) locks form the appearance chamber that supplies push rod (1) axial displacement, is equipped with the damped damping mechanism of radial outside removal to this semi-ring body (2) between each semi-ring body (2) and fixed cover (3), push rod (1) front end cartridge extremely hold the intracavity, is equipped with a radial position guiding mechanism between each semi-ring body (2) and push rod (1).

2. A variable diameter uterine dilator rod according to claim 1, wherein: radial position guiding mechanism includes a wedge arch (21) that half ring body (2) medial surface protrusion set up to and push rod (1) side is sunken to be set up, dodge portion (11) that correspond with this wedge arch (21), and wedge arch (21) set up and dodge portion (11) position department rather than corresponding, and slip inclined plane (211) setting of this wedge arch (21) is in the one side that deviates from this half ring body (2) front end, dodge portion (11) be equipped with one rather than correspond on wedge arch (21) push inclined plane (111) that slip inclined plane (211) matches.

3. A variable diameter uterine dilator rod according to claim 2, wherein: the two wedge-shaped protrusions (21) are sequentially arranged along the axial direction of the sleeve, and the distance from one pushing inclined plane (111) to the corresponding sliding inclined plane (211) is different from the distance from the other pushing inclined plane (111) to the other sliding inclined plane (211).

4. A rod as claimed in claim 1, 2 or 3, wherein: damping mechanism includes stand (22) that semi-ring body (2) outside front end protrusion set up to and fixed cover (3) inboard face should be equipped with spring (4) in the blind hole to the blind hole that stand (22) set up, stand (22) cartridge is to its corresponding blind hole in, and this stand (22) compression spring (4) set up.

5. A variable diameter uterine dilator rod according to claim 4, wherein: the front end of the push rod (1) is provided with a limiting part (12) which is matched with the wedge-shaped bulge (21) and prevents the push rod (1) from falling off, and the limiting part (12) is of a disc structure.

6. A variable diameter uterine dilator rod according to claim 4, wherein: the front end of each semi-ring body (2) is provided with a convex arc-shaped plate (23) in a sealing mode, and the two convex arc-shaped plates (23) form a hemispherical structure after the two semi-ring bodies (2) are buckled.

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