CN111248850B

CN111248850B - Vaginal dilator for gynecology

Info

Publication number: CN111248850B
Application number: CN202010131174.7A
Authority: CN
Inventors: 王力; 冯晓军; 刘秀平; 黄付荣
Original assignee: Individual
Current assignee: Second Affiliated Hospital Of Shandong University Of Traditional Chinese Medicine Shandong Integrated Traditional Chinese And Western Medicine Hospital
Priority date: 2020-02-29
Filing date: 2020-02-29
Publication date: 2022-07-19
Anticipated expiration: 2040-02-29
Also published as: CN111248850A

Abstract

The invention relates to the field of medical instruments, and particularly discloses a gynecological vaginal dilator which comprises two handles, wherein hinged parts are arranged at the upper end and the lower end of each handle; the upper ends of the two handles are respectively and rotatably connected with one mounting cylinder, and the lower ends of the two handles are respectively and rotatably connected with the other mounting cylinder; a core rod and a push spring are respectively limited in the two mounting cylinders; the opposite ends of the two core rods are respectively connected with a combined seat, and the two combined seats are respectively combined with an expansion sheet; the two limiting blocks are fixed on the handle, when the handle rotates to the position right behind the two placement cylinders, the two limiting blocks just enter the two working position grooves respectively, the non-return mechanism allows the two core rods to approach to the middle, and the two core rods can be prevented from being far away. The gynecological vaginal dilator is based on a delicate structural design, convenient and quick to use, balanced in expansion force and sufficient in expansion space, can be suitable for different patients with large individual differences, and can be adjusted to the optimal expansion state according to clinical actual conditions.

Description

Vaginal dilator for gynecology

Technical Field

The invention relates to a medical appliance, in particular to a vaginal dilator used in gynecological clinical examination and treatment.

Background

A vaginal dilator, also known as a vaginal dilator, is often used for dilating vagina in routine examination and operation treatment of gynecological diseases to obtain a better examination field or an operation field, is a medical instrument commonly used in gynecology, and generally comprises a pair of dilating wings and a handle, wherein the two dilating wings are duckbilled, the rear ends of the dilating wings are hinged, the handle is arranged at the tail ends of the two dilating wings, and the opening angles of the two dilating wings can be adjusted by the handle and the positions of the two dilating wings can be locked, so that the expected dilating purpose is realized. Because the expansion degree of the existing vaginal dilator is mostly adjusted by adjusting the opening angle, in the clinical use process, the expansion degrees of the expansion wings applied to the vagina from inside to outside are often inconsistent and unbalanced, which easily causes the patients to be locally stressed too much and severely painful or even contused; especially, when the opening angle of the two expansion wings is larger, although the inside of the vagina can be fully expanded, the part close to the vaginal orifice is difficult to be fully expanded, and in addition, the rear port of the vaginal expander is usually in a closed ring shape, which often forms a bottle neck which hinders operations such as examination and operation; in addition, because the tail ends of the two expansion wings are connected in an articulated manner, the articulated elements can shield the sight of a doctor to a certain extent. In conclusion, the existing vaginal dilator is not reasonable in structural design, and is difficult to adjust to an optimal dilating state according to clinical actual conditions such as individual difference and dilating purposes of patients in the using process.

Disclosure of Invention

The technical purpose of the invention is to provide a gynecological vaginal dilator which has a scientific and reasonable structure, is convenient and quick to use, can be adjusted to an optimal dilation state according to clinical practical conditions, and is beneficial to examination or operation.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

a gynecological vaginal dilator comprises two arched handles with the same shape, wherein the upper end and the lower end of each handle are respectively provided with a hinge part; the hinged parts at the upper ends of the two handles are respectively and rotatably connected with two positions at the upper end of one placing cylinder, and the hinged parts at the lower ends of the two handles are respectively and rotatably connected with two positions at the lower end of the other placing cylinder, so that the two placing cylinders are distributed at intervals up and down and the relative positions of the two placing cylinders are constant; two rotating shafts corresponding to the two hinge parts of the same handle are overlapped, so that each handle can rotate relative to the two mounting cylinders; a locking mechanism is arranged between the two handles, and when the two handles rotate to the positions right behind the two placing cylinders and are in a close state, the two handles can be locked by the locking mechanism; the two placing cylinders are respectively limited with a core bar which can only slide up and down, and the two placing cylinders are internally provided with ejection springs for driving the two core bars to move away; the opposite end parts of the two core rods respectively extend to the outside of the corresponding mounting cylinder and are respectively connected with a combination seat, the two combination seats are respectively combined with expansion sheets which extend forwards, and the two expansion sheets are distributed up and down and are used for expanding the vagina; the arrangement cylinders are respectively provided with a non-return mechanism and a station groove, two limit blocks are fixed on one of the two handles, and when the handle rotates to the position right behind the two arrangement cylinders, the two limit blocks just enter the two station grooves respectively; when the two limiting blocks are respectively positioned in the two station grooves, the non-return mechanism allows the two core rods to be drawn close to the middle, and when the two core rods are drawn close to the nearest state, the two non-return mechanisms are respectively matched with the two limiting blocks to prevent the two core rods from being far away; when the limiting block is not positioned in the station groove, the non-return mechanism does not obstruct the movement of the core rod.

The using method and the working principle of the gynecological vaginal dilator are as follows:

during clinical use, firstly, the two handles are rotated to the positions right behind the two placement cylinders, the two handles are locked by the locking mechanism, the two handles are kept in a close state and cannot move relative to the two placement cylinders, and meanwhile, the two limiting blocks are respectively positioned in the two station grooves; the two expansion pieces are respectively fixed on the two closing seats, the two core rods are manually driven to approach towards the middle, after the two core rods approach to the nearest state, the two expansion pieces are in a buckling state, the two non-return mechanisms are respectively matched with the two limiting blocks to prevent the two core rods from being far away, namely the two expansion pieces are kept in the buckling state, and at the moment, the two expansion pieces, the two placement cylinders and the two handles are integrally distributed along the front-back direction and cannot relatively move among the parts; then, the buckled expansion pieces are stretched into the vagina of a patient by holding the closed handles, the locking effect of the locking mechanism on the two handles is released, the two handles are manually rotated outwards, after the two limiting blocks are respectively moved out of the two station grooves, the non-return mechanism does not block the movement of the core rods any more, the two core rods are driven by the two ejection springs to be far away, namely, the distance between the two expansion pieces is gradually increased, so that the expected vagina expansion purpose is realized; in the process of expanding the vagina, the two handles can flexibly adjust the positions through rotation so as to avoid causing obstruction to clinical operations such as examination or operation; finally, after the clinical operation such as examination or operation is finished, the two handles are rotated to the right back of the two placing cylinders, the two handles are locked by the locking mechanism, the two core rods are driven to move towards the middle, the two expansion pieces are restored to the buckling state and are maintained in the buckling state, and then the expansion pieces can be smoothly taken out of the vagina of the patient by holding the handles.

Compared with the prior art, the gynecological vaginal dilator disclosed by the invention has the following technical effects:

this gynaecology uses vaginal dilator is when clinical use, the expansion degree is adjusted through the mode of translation to two expansion pieces, expansion piece back-and-forth movement range is unanimous, can guarantee from the lining to the expansion power that receives outwards is unanimous and balanced from this, on the one hand, can improve or even avoid because of the too big violent pain of local atress or even by the emergence of the circumstances such as contused wound even, on the other hand, it tends to unanimously to expand the space in the vagina outside, do not have articulated position between two expansion pieces in addition, can not form the "bottleneck" that hinders clinical operation such as inspection and operation, make the cavity space that forms after the expansion extremely do benefit to going on of clinical operation such as inspection and operation, also be favorable to increasing the art field simultaneously. Simultaneously, this gynaecology uses vaginal dilator can rotate two handles to patient thigh inboard wait position according to actual operation needs when using to can not cause the obstacle to clinical operation such as inspection and operation, the high efficiency that more is favorable to the time clinical operation goes on. In addition, after the two handles are rotated to the closed state, the two handles are convenient to hold, and the two expansion pieces can be maintained in the buckled state after reaching the buckled state, so that the operation of putting and taking the expansion pieces into and out of the vagina is very convenient and fast; in a similar way, after the expansion piece is stretched into the vagina of a patient, the two handles are rotated outwards, so that the limit effect of the limit block on the check mechanism is relieved while the situation that the handles are positioned right in front of the expansion piece to block clinical operation is avoided, the two expansion pieces can be automatically separated to implement expansion, and therefore the operation of the expansion piece on the vagina can be very convenient and fast. In conclusion, the gynecological vaginal dilator is based on a delicate structural design, is convenient and quick to use, has balanced vaginal dilation force and sufficient dilation space, can be suitable for different patients with large individual difference, can be adjusted to the optimal dilation state according to clinical practical conditions during use, and is beneficial to improving the efficiency and effect of clinical operations such as examination, operation and the like.

Drawings

Fig. 1 is a schematic structural view of the vaginal dilator for gynecology in example 1.

Fig. 2 is a second schematic structural view of the vaginal dilator for gynecology in example 1.

Fig. 3 is a schematic exploded view of the vaginal dilator for gynecology in example 1.

Fig. 4 is a structural schematic diagram of the installation barrel of the embodiment 1 after being cut open.

FIG. 5 is a schematic diagram illustrating the engagement of the components when the stopper is not located in the station groove in embodiment 1.

Fig. 6 is a schematic view of the limiting block and the check mechanism in embodiment 1 for preventing the two core rods from being separated.

Fig. 7 is a top view of the vaginal dilator for gynecology of example 1 before being placed in the vagina.

Fig. 8 is a front view of the vaginal dilator for gynecology in example 1 before being put into the vagina.

Fig. 9 shows an embodiment of the stop-return mechanism according to embodiment 1.

Fig. 10 is a schematic view showing a state in which the combination seat and the expansion piece are combined in example 1.

Fig. 11 is a schematic view showing the structure of the rear end of the expansion piece in example 2.

Fig. 12 is a schematic structural view of a combination seat in embodiment 2.

Fig. 13 is a schematic view of a combination seat and an expansion piece in embodiment 2.

Fig. 14 is a schematic view of the internal structure of the setting cylinder in embodiment 3.

Fig. 15 is a schematic view of the vaginal dilator for gynecology in example 3 for adjusting the degree of dilation.

In the figure, 1, an expansion piece, 101, a combined groove, 102, a guard plate, 103, a square groove, 104, a flange, 105, a buckling claw, 2, a station groove, 3, a placing cylinder, 4, a hinge part, 5, a limiting block, 6, a handle, 7, a bolt handle, 8, a locking mechanism, 801, a positioning protrusion, 802, a magnetic piece, 803, a butt joint part, 804, a positioning hole, 9, a combined seat, 10, a core rod, 11, a hinge seat, 12, a guide groove, 13, a check pin, 14, a reset spring, 15, a pushing spring, 16, a rubber ring, 17, a cross arm, 18, a swing pin, 19, a groove seat, 20, a guide block, 21, a knob, 22, a limiting nut, 23, a threaded rod, 24 and a reset elastic piece.

Detailed Description

Example 1

Referring to fig. 1-8, the invention discloses a vaginal dilator for gynecology, which comprises two handles 6 and two placement barrels 3; the two handles 6 are in the same shape and are both in an arc shape, and the upper end and the lower end of each handle 6 are respectively provided with a hinge part 4; the hinged parts 4 at the upper ends of the two handles 6 are respectively and rotatably connected with two positions at the upper end of one placing cylinder 3, the hinged parts 4 at the lower ends of the two handles 6 are respectively and rotatably connected with two positions at the lower end of the other placing cylinder 3, and the two placing cylinders 3 are distributed at intervals up and down and the relative positions of the two placing cylinders are constant under the support of the two handles 6; the two rotating shafts of the upper and lower hinged parts 4 of the same handle 6 are respectively superposed, so that each handle 6 can rotate relative to the two placing cylinders 3; a locking mechanism 8 is arranged between the two handles 6, and when the two handles 6 rotate to the right back of the two placing barrels 3 and are in a close state, the two handles 6 can be locked by the locking mechanism 8; based on the structural relationship, when the locking mechanism 8 locks the two handles 6, the two handles 6 and the two placing cylinders 3 form a triangular stable structure, and the parts cannot move relatively; a core bar 10 is limited in each of the two arrangement cylinders 3, the two core bars 10 can only slide up and down along the arrangement cylinders 3, so that the two core bars 10 can be closed and separated, and the two arrangement cylinders 3 are respectively provided with an ejection spring 15 for driving the two core bars 10 to be separated; the opposite end parts of the two core rods 10 respectively extend to the outside of the corresponding mounting cylinder 3 and are respectively connected with a combination seat 9, the two combination seats 9 are respectively combined and connected with the expansion sheets 1 which extend forwards, and the two expansion sheets 1 are distributed up and down for expanding the vagina; the expansion sheet 1 is duckbilled and the front end is round and smooth; the two placing cylinders 3 are respectively provided with a non-return mechanism and a station groove 2, one handle 6 of the two handles 6 is fixedly connected with two limiting blocks 5, and when the handle 6 rotates to the position right behind the two placing cylinders 3, the two limiting blocks 5 just enter the two station grooves 2 respectively; when the two limiting blocks 5 are respectively positioned in the two station grooves 2, the non-return mechanisms allow the two core rods 10 to approach towards the middle, and when the two core rods 10 approach to the nearest state, the two non-return mechanisms are respectively matched with the two limiting blocks 5 to prevent the two core rods 10 from moving away; when the limiting block 5 is not positioned in the station groove 2, the non-return mechanism does not hinder the movement of the core rod 10.

in clinical use, firstly, as shown in fig. 6, 7 and 8, the two handles 6 are rotated to the right rear of the two placing cylinders 3, the two handles 6 are locked by the locking mechanism 8, at the moment, the two handles 6 and the two placing cylinders 3 form a triangular stable structure, the parts cannot move relatively, the two handles 6 which are closed together are very convenient to hold, and meanwhile, the two limit blocks 5 are respectively positioned in the two station grooves 2; the two expansion pieces 1 are respectively combined and fixed on the two groups of closing seats 9, the expansion pieces 1 or the core bars 10 are held to manually drive the two core bars 10 to approach towards the middle, the two expansion pieces 1 are in a buckling state after the two core bars 10 approach to the nearest state, the two non-return mechanisms are respectively matched with the two limiting blocks 5 to prevent the two core bars 10 from being far away, namely the two expansion pieces 1 maintain the buckling state after the artificial external force is removed; at this time, the two expansion pieces 1, the two placement cylinders 3 and the two handles 6 are integrally distributed along the front-back direction, the parts cannot move relatively, and the two ejection springs 15 are in a compressed state. Then, the two handles 6 which are held together extend the two buckled expansion pieces 1 into the vagina of a patient, the locking effect of the locking mechanism 8 on the two handles 6 is released, the two handles 6 are manually rotated towards the outside, after the two limit blocks 5 are respectively moved out of the two station grooves 2, the non-return mechanism does not block the movement of the core rod 10, and then the two core rods 10 are driven by the two ejector springs 15 to be away, namely, as shown in fig. 1, 2 and 5, the distance between the two expansion pieces 1 is gradually increased to realize the expected vagina expansion purpose; referring to fig. 1 and 2, during the vaginal dilation, the two handles 6 can be flexibly adjusted in position in a rotating manner so as to avoid obstructing clinical operations such as examination or surgery. Finally, as shown in fig. 7 and 8, after the clinical operation such as examination or operation is completed, the handles 6 are rotated to the right behind the two placement cylinders 3, the handles 6 are locked again by the locking mechanism 8, the core bars 10 are driven to move closer to the middle, the two expansion pieces 1 are restored to the locked state and maintained in the locked state, and then the handle 6 is held to smoothly take out the expansion pieces 1 from the vagina of the patient.

Referring to fig. 1 and 8, when the gynecological vaginal dilator is clinically used, the vaginal dilation degree is adjusted by the two dilation pieces 1 in a translation mode, and the front and back moving amplitudes of the dilation pieces 1 are consistent, so that the dilation force applied to the vagina from inside to outside tends to be consistent and balanced; on one hand, the situation that severe pain even contusion and the like are caused by overlarge local stress can be improved and even avoided, on the other hand, based on the fact that the expansion space inside and outside the vagina tends to be consistent, and in addition, the hinge part 4 does not exist between the two expansion pieces 1, the bottleneck which hinders clinical operations such as examination and operation and the like can not be formed, so that the hollow space formed after expansion is extremely beneficial to the clinical operations such as examination and operation and the like, and meanwhile, the operation field is also beneficial to being enlarged.

Referring to fig. 1, 2 and 3, in the process of expanding the vagina, the gynecological vaginal dilator can rotate the two handles 6 to the inner sides of the thighs of the patient according to actual operation requirements, so that the clinical operations such as examination and operation are not obstructed, and the high-efficiency operation of the clinical operations is facilitated.

Referring to fig. 6-8, when the gynecological vaginal dilator is clinically used, after the two handles 6 are rotated to the closed state, the two handles 6 can be conveniently held, and meanwhile, the two dilating plates 1 can be maintained in the closed state after being in the closed state, so that the operation of putting and taking the dilating plates 1 into and out of the vagina is very convenient and fast; in a similar way, after the expansion piece 1 is stretched into the vagina of a patient, the two handles 6 are rotated outwards, so that the handles 6 are prevented from being positioned in the front of the expansion piece 1 to block clinical operation, the limiting effect of the limiting block 5 on the check mechanism is relieved, the two expansion pieces 1 can be automatically separated to expand and support, and the operation of the expansion piece 1 on the vagina expansion is very convenient and fast.

As shown in the

examination pictures

1 and 5, when the gynecological vaginal dilator is clinically used, the two ejection springs 15 provide power to promote the two expansion sheets 1 to expand the vagina, when the stress of the ejection springs 15 reaches balance, the expansion degree reaches the maximum and is continuously maintained, the working mode ensures that the structure of the gynecological vaginal dilator is simplified, and the gynecological vaginal dilator is more convenient and faster to use; meanwhile, the ejection spring 15 has a large elastic expansion range and the elasticity tends to be constant, so the vaginal dilator for gynecology can be suitable for different patients with large individual difference and can meet most clinical requirements.

This gynaecology uses vaginal dilator accords with doctor's operation custom based on exquisite and reasonable structural design, and convenient to use is swift, and vagina expanding force degree is balanced, and the expansion space is abundant, can be applicable to the great different patients of individual difference, can adjust to best expansion state according to clinical actual conditions during the use, is favorable to improving the efficiency and the effect of clinical operation such as inspection, operation.

Referring to fig. 2 and 3, in the vaginal dilator for gynecology, the core bar 10 is limited by the mounting cylinder 3, and can only slide up and down along the mounting cylinder 3, which is intended to ensure that the two dilating plates 1 can only move close to and away from each other and cannot move relatively in other ways; in the prior art, the technical requirement of preventing the core bar 10 and the setting cylinder 3 from rotating relatively can be achieved by various conventional means, for example, a guiding and matching mechanism for preventing the core bar 10 and the setting cylinder 3 from rotating relatively can be arranged between the two; for example, the core rod 10 may be a post rod with a non-circular cross section, and the end hole of the mounting tube 3 through which the core rod 10 extends may also be a non-circular structure, thereby achieving the technical purpose of preventing the core rod 10 and the mounting tube 3 from rotating relatively.

Referring to fig. 2 and 3, in the vaginal dilator for gynecology, each of the placing cylinders 3 is provided with two hinge seats 11 symmetrically distributed left and right, and the hinge parts 4 of the two handles 6 are rotatably connected with the placing cylinders 3 through the hinge seats 11.

Referring to fig. 2, 3 and 8, in the vaginal dilator for gynecology, the outside of the opposite ends of the two core rods 10 are respectively provided with a latch handle 7 which is convenient to hold, and the two core rods 10 can be manually driven to close towards the middle by using the two latch handles 7 more conveniently and more easily.

Referring to fig. 4, 5 and 6, in the vaginal dilator for gynecology described above, the pushing spring 15 is disposed in the inner cavity of the setting cylinder 3 and sleeved outside the core rod 10, two ends of the pushing spring 15 respectively abut against the setting cylinder 3 and the core rod 10, and the pushing spring 15 is forced to contract when the core rod 10 is drawn towards the middle.

Referring to fig. 1, 2, 3 and 7, in the vaginal dilator for gynecology, the locking mechanism 8 includes two abutting portions 803 respectively disposed on the handle 6, and magnetic attraction pieces 802 are respectively fixed on the two abutting portions 803; one of the butting parts 803 is provided with an inward-concave positioning hole 804, and the other butting part 803 is provided with a positioning protrusion 801 matched with the positioning hole 804; when the two handles 6 are both positioned right behind the placement barrel 3, the positioning protrusion 801 is inserted into the positioning hole 804, and the two magnetic attraction pieces 802 attract each other to tightly combine the two connection portions 803, thereby locking the two handles 6 and keeping the two handles 6 in a close state and incapable of moving relatively. The locking mechanism 8 is implemented by adopting the mode, the structure is simpler, the use is more convenient, the locking mechanism 8 can automatically lock the two handles 6 when the two handles 6 are rotated to the right back, and because the adsorption force between the magnetic attraction pieces 802 is extremely limited, a user can release the locking effect of the locking mechanism 8 by slightly forcibly rotating the handles 6 to the two sides.

Referring to fig. 6, in the vaginal dilator for gynecology, a rubber ring 16 for providing a friction damping effect to the core rod 10 is installed in the installation cylinder 3 to ensure that the speed of the compressed ejector spring 15 driving the core rod 10 to move is gentle and discomfort or injury to the patient is avoided.

In the vaginal dilator for gynecology, the dilating slice 1 and the combined seat 9 are connected in a combined way, and the combined way of the dilating slice 1 and the combined seat 9 has various means to choose in the prior art, and can also be implemented in the following way:

as shown in fig. 10, the combination seat 9 is in a trapezoid plate shape, the expansion piece 1 is provided with a combination groove 101 in a dovetail shape into which the combination seat 9 can be inserted, and after the expansion piece 1 is combined and connected with the combination seat 9 through the combination groove 101, the combination seat 9 cannot slip from the combination groove 101 in the process of expanding the vagina; because the expansion piece 1 can be quickly disassembled and assembled with the combined seat 9, the expansion piece 1 is preferably made of plastic materials and is disposable, and the sterility and the sanitation in the practical process of the gynecological vaginal dilator are ensured.

In the vaginal dilator for gynecology, the non-return mechanism has various embodiments, and can be implemented by the following modes:

as shown in fig. 4, 5, 6 and 9, the two backstop mechanisms are identical in structure and each comprise a guide slot 12 and a backstop pin 13; the guide groove 12 is formed in the mounting barrel 3, extends in the up-down direction and is intersected with the station groove 2; the check pin 13 is limited by the core rod 10 and can float transversely, and the outer end of the check pin 13 extends into the guide groove 12 and is in sliding fit with the guide groove 12; a return spring 14 for driving the check pin 13 to return outwards is arranged in the core rod 10; one side of the outer end of the check pin 13 close to the combined seat 9 is an inclined plane; when the limiting block 5 is positioned in the station groove 2, the non-return pin 13 and the corresponding limiting block 5 actually form a non-return mechanism, in the process that the two core rods 10 are drawn together towards the middle, the non-return pin 13 is abutted against the limiting block 5 through an inclined plane, and then the non-return pin 13 is stressed to overcome the elasticity of the return spring 14 and retract inwards, so that the blocking of the limiting block 5 is avoided, and the two core rods 10 can be drawn together continuously; when the two core rods 10 are far away, the check pin 13 cannot retract after being propped against the limiting block 5, namely the check pin 13 is matched with the limiting block 5 to prevent the two core rods 10 from being far away; when the limiting block 5 is not located in the station groove 2, obviously, the single check pin 13 cannot form a check mechanism, that is, the check mechanism does not hinder the movement of the core rod 10;

after the non-return mechanism adopts the structure, the structure is simple, the work is stable, meanwhile, the non-return pin 13 is matched with the guide groove 12, the technical effect of preventing the core bar 10 and the placing cylinder 3 from rotating relatively can be achieved, an independent limiting mechanism is not needed to be additionally arranged to prevent the core bar 10 and the placing cylinder 3 from rotating relatively, two purposes are achieved, and the gynecological vaginal dilator is enabled to be more compact in structure.

Example 2

In this embodiment, on the basis of the structure of the gynecological vaginal dilator disclosed in embodiment 1, the combination manner of the combination seat 9 and the dilation piece 1 is further improved, and the specific structure is as follows:

referring to fig. 11, 12 and 13, the opposite ends of the two core rods 10 are respectively provided with a cross arm 17 extending forwards, and the combination seat 9 is rectangular and fixedly connected with the front end of the cross arm 17; the rear end of the expansion sheet 1 is provided with a guard plate 102 which is integrated with the expansion sheet and is vertical to the expansion sheet, and the rear end surface of the guard plate 102 is provided with a square groove 103 for accommodating the combination seat 9; one side of the square groove 103 is provided with a flange 104 for limiting the outward movement of the combination seat 9, and the other side opposite to the flange 104 is provided with a buckling claw 105 capable of elastically swinging, wherein the buckling claw 105 can buckle the outer side of the combination seat 9 to limit the outward movement of the combination seat 9;

during combination, one end of the combination seat 9 is inserted into one end of the square groove 103 where the flange 104 is located, then the other end of the combination seat 9 is placed into the square groove 103 and fastened by the fastening claw 105, and the combination seat 9 cannot slip from the square groove 103 under the limitation of the flange 104 and the fastening claw 105; when the combined seat is detached, the buckling claws 105 are pulled to prevent the combined seat 9 from being bound, one ends of the combined seat 9 corresponding to the buckling claws 105 are lifted, and finally the whole combined seat 9 is taken out of the square groove 103.

The combined seat 9 and the expansion piece 1 are implemented by adopting the above mode, the structure is simpler, the disassembly and the assembly are more convenient and quicker, the stability after the combination is high, and the combined seat 9 and the expansion piece 1 cannot move mutually and can not be separated in the clinical use process; meanwhile, due to the arrangement of the protective plate 102, the protective plate 102 can reduce or even avoid the contact of other parts except the expansion piece 1 with the body of a patient in clinical use, and is safe and sanitary.

Example 3

Referring to fig. 2, 5 and 8, in the vaginal dilator for gynecology disclosed in the foregoing embodiment, the vaginal dilator does not have a mechanism for adjusting the degree of dilation, and the degree of dilation will not be increased until the two pushing springs 15 are balanced, although this working method has significant advantages and can be applied to different patients with large individual differences, there is a certain disadvantage in clinical use; clinically, different clinical operations such as examination and operation have different requirements on the vaginal dilation degree, and when the smaller dilation degree can meet the requirements of the clinical operations, the two ejection springs 15 are not balanced yet, so that the dilation degree is increased continuously and obviously is not beneficial, and if the physiological structure of a patient is special or sensitive, unnecessary pain and injury are brought to the patient. In order to solve the above technical problem, the present embodiment is further improved based on the structure of the vaginal dilator for gynecology disclosed in the foregoing embodiments as follows:

referring to fig. 14 and 15, the ends of the two core rods 10 away from the combination seat 9 are both provided with a cavity extending up and down; one end of each of the two placing cylinders 3, which is far away from the combination seat 9, is internally provided with a threaded rod 23 which extends up and down and can only rotate; one end of the threaded rod 23 is fixedly connected with the knob 21 positioned outside the mounting barrel 3, and the other end of the threaded rod 23 is accommodated in the cavity corresponding to the core rod 10; the threaded rods 23 are respectively provided with a limit nut 22 in threaded fit, and the limit nuts 22 and the mounting barrel 3 can only slide up and down relatively; the limiting nut 22 can be abutted against the end part of the corresponding core rod 10 far away from the combination seat 9, and then the ejector spring 15 cannot drive the core rod 10 to move continuously;

as shown in fig. 15, after the gynecological vaginal dilator has the above structure, in clinical use, the positions of the two limit nuts 22 can be adjusted by rotating the knob 21 according to clinical actual requirements, i.e., the maximum distance between the two dilating plates 1 is adjusted, so that the presetting and adjustment of the dilating degree are realized, and unnecessary pain and injury to patients caused by over-dilation are avoided; in the improved structure, most of the threaded rod 23 is accommodated in the cavity of the core rod 10, so that the inner structure of the accommodating cylinder 3 is compact, and the volume is not increased remarkably due to the additional expansion degree adjusting function.

Further, in order to make the structure of the vaginal dilator for gynecology disclosed in the present embodiment more compact, the present embodiment further improves the non-return mechanism, and the specific structure is as follows:

referring to fig. 14 and 15, the two check mechanisms are identical in structure and each comprise a guide groove 12 and a swing pin 18; the guide groove 12 is formed in the mounting barrel 3, extends in the up-down direction and is intersected with the station groove 2; a groove seat 19 is arranged on the side wall of the core rod 10, one end of a swing pin 18 is fixed in the groove seat 19 through a rotating shaft, so that the other end of the swing pin can swing within a preset range, and the swing pin 18 extends into the guide groove 12 and is in sliding fit with the guide groove 12; a reset elastic sheet 24 for driving the swing pin 18 to swing outwards is arranged in the core rod 10; one side of the swing pin 18 close to the combination seat 9 is an inclined plane; when the limiting block 5 is positioned in the station groove 2, the swinging pin 18 and the corresponding limiting block 5 form a non-return mechanism, in the process that the two core bars 10 are drawn together towards the middle, the swinging pin 18 is abutted against the limiting block 5 through the inclined surface, the swinging pin 18 overcomes the elasticity of the reset elastic sheet 24 under the stress and swings inwards, and therefore the blocking of the limiting block 5 is avoided, and the two core bars 10 can be drawn together continuously; when the core rods 10 are far away, the swinging pin 18 and the limiting block 5 cannot swing after abutting against each other, namely the swinging pin 18 and the limiting block 5 are matched to prevent the two core rods 10 from being far away; when the limiting block 5 is not positioned in the station groove 2, obviously, the single swing pin 18 cannot form a non-return mechanism, namely the non-return mechanism does not hinder the movement of the core rod 10; a guide block 20 is fixedly connected to one side of a limit nut 22 in the setting barrel 3, and the guide block 20 is in sliding fit with the guide groove 12 to achieve the purpose of preventing the limit nut 22 and the setting barrel 3 from rotating relatively.

After the non-return mechanism adopts the structure, the structure is simpler, the occupied space in the core rod 10 is smaller, and the non-return mechanism is extremely suitable for being synchronously implemented with the related structures such as the threaded rod 23 and the like; meanwhile, the swinging pin 18 is matched with the guide groove 12 to achieve the technical effect of preventing the core bar 10 and the mounting cylinder 3 from rotating relatively, so that an independent limiting mechanism is not required to be additionally arranged to prevent the core bar 10 and the mounting cylinder 3 from rotating relatively, and the limiting nut 22 can realize limiting by means of the guide groove 12; further, since the guide block 20 is located in the guide groove 12, a user can determine the position of the stopper nut 22 by observing the guide block 20 when performing the expansion degree adjustment.

Claims

1. A gynecological vaginal dilator is characterized by comprising two arched handles with the same shape, wherein the upper end and the lower end of each handle are respectively provided with a hinge part; the hinged parts at the upper ends of the two handles are respectively and rotatably connected with two positions at the upper end of one placing cylinder, and the hinged parts at the lower ends of the two handles are respectively and rotatably connected with two positions at the lower end of the other placing cylinder, so that the two placing cylinders are distributed at intervals up and down and the relative positions of the two placing cylinders are constant; two rotating shafts corresponding to the two hinged parts of the same handle are superposed; a locking mechanism is arranged between the two handles, and when the two handles rotate to the positions right behind the two placement cylinders and are in a close state, the two handles can be locked by the locking mechanism; the two mounting cylinders are respectively limited with a core bar which can only slide up and down, and the two mounting cylinders are internally provided with ejection springs for driving the two core bars to move away; the opposite end parts of the two core rods respectively extend to the outside of the corresponding mounting cylinder and are respectively connected with a combination seat, the two combination seats are respectively combined with expansion sheets which extend forwards, and the two expansion sheets are distributed up and down and are used for expanding the vagina; the placing cylinders are respectively provided with a non-return mechanism and a station groove, two limit blocks are fixed on one of the two handles, and the two limit blocks just enter the two station grooves respectively when the handle rotates to the position right behind the two placing cylinders; when the two limiting blocks are respectively positioned in the two station grooves, the non-return mechanism allows the two core rods to be drawn close to the middle, and when the two core rods are drawn close to the nearest state, the two non-return mechanisms are respectively matched with the two limiting blocks to prevent the two core rods from being far away; when the limiting block is not positioned in the station groove, the non-return mechanism does not block the movement of the core rod; the end parts of the two core rods far away from the combined seat are respectively provided with a cavity extending up and down; one end of each of the two mounting cylinders, which is far away from the combination seat, is internally limited with a threaded rod which extends up and down and can only rotate; one end of the threaded rod is fixedly connected with a knob positioned outside the mounting cylinder, and the other end of the threaded rod is accommodated in the cavity corresponding to the core rod; the threaded rods are respectively provided with a limit nut in threaded fit, and the limit nuts and the mounting barrel can only slide up and down relatively; the limiting nut can abut against the end part, far away from the combined seat, of the corresponding core rod, and the ejector spring cannot continuously drive the core rod to move.

2. A vaginal dilator for gynaecology according to claim 1, characterised in that: the expansion piece is duckbilled and the front end is smooth.

3. A vaginal dilator for gynaecology according to claim 1, characterised in that: a guide matching mechanism for preventing the relative rotation of the installation cylinder and the core rod is arranged between the installation cylinder and the core rod.

4. A vaginal dilator for gynaecology according to claim 1, characterised in that: all be provided with the articulated seat of two bilateral symmetry distributions on every arrangement section of thick bamboo, the articulated portion of two handles all realizes rotating with arrangement section of thick bamboo through articulated seat and is connected.

5. A vaginal dilator for gynaecology according to claim 1, characterised in that: the outer sides of the opposite end parts of the two core rods are respectively provided with a bolt handle which is convenient to hold.

6. A vaginal dilator for gynaecology according to claim 1, characterised in that: the ejector spring is arranged in the inner cavity of the arranging barrel and sleeved outside the core rod, two ends of the ejector spring are respectively abutted against the arranging barrel and the core rod, and the ejector spring is forced to contract when the core rod is drawn towards the middle.

7. The gynecological vaginal dilator of claim 1, wherein: the locking mechanism comprises two butt joint parts which are respectively arranged on the handle, and magnetic attraction pieces are respectively fixed on the butt joint parts; one of the butting parts is provided with an inwards concave positioning hole, and the other butting part is provided with a positioning bulge matched with the positioning hole; when the two handles are positioned right behind the placement barrel, the positioning protrusions are inserted into the positioning holes, the two magnetic suction pieces attract each other to enable the two butting parts to be tightly combined, and therefore the two handles are locked.

8. A vaginal dilator for gynaecology according to claim 1, characterised in that: the arrangement cylinder is internally provided with a rubber ring for providing friction damping action for the core rod so as to ensure that the speed is gentle when the compressed ejection spring drives the core rod to move.

9. A vaginal dilator for gynaecology according to claim 1, characterised in that: the combined seat is in a trapezoidal plate shape, the expansion sheet is provided with a combined groove which is in a dovetail shape and can be inserted by the combined seat, and the combined seat can not slip off from the combined groove in the process of expanding the vagina after the expansion sheet is combined and connected with the combined seat through the combined groove; the expansion piece is made of plastic materials and is disposable.

10. A vaginal dilator for gynaecology according to claim 1, characterised in that: the two non-return mechanisms have the same structure and respectively comprise a guide groove and a non-return pin; the guide groove is formed in the mounting cylinder, extends in the vertical direction and is intersected with the station groove; the check pin is limited by the core rod and can transversely float, and the outer end of the check pin extends into the guide groove and is in sliding fit with the guide groove; a return spring for driving the check pin to reset outwards is arranged in the core rod; one side of the outer end of the check pin close to the combined seat is an inclined plane; when the limiting block is positioned in the station groove, the check pin abuts against the limiting block through the inclined plane in the process that the two core rods are drawn close to the middle, and then the check pin is stressed to overcome the elasticity of the return spring and retract inwards, so that the blocking of the limiting block is avoided, and the two core rods can be drawn close continuously; when the two core rods are far away, the check pin and the limiting block cannot retract after abutting against each other, namely the check pin and the limiting block are matched to prevent the two core rods from being far away.