Expander

Abstract

The utility model belongs to the technical field of medical instruments, and discloses a dilator which comprises an upper blade, a lower blade and a rotating shaft, the root of the rotating shaft is arranged on one of the upper blade and the lower blade, a shaft hole is formed in the other one of the upper blade and the lower blade in a penetrating mode, and the rotating shaft is installed in the shaft hole so that the upper blade and the lower blade can be connected in a rotating mode. The end, away from the root, of the rotating shaft is provided with a penetrating groove, the penetrating groove extends in the axial direction of the rotating shaft and penetrates through the rotating shaft in the radial direction of the rotating shaft, and the end, away from the root, of the rotating shaft extends out of the shaft hole and is provided with a turned-over edge which extends towards the side, away from the axis of the rotating shaft in the radial direction of the rotating shaft. According to the expander, the penetrating groove is formed in the rotating shaft and can divide the rotating shaft, so that the rotating shaft can be conveniently mounted in the shaft hole, and the assembling efficiency of the expander is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, relates to a dilator. BACKGROUND

[0002] The vaginal dilator is a kind of medical instrument for diagnosing and screening gynecological diseases in clinic, and it plays an important role in marriage examination, pregnancy examination and prenatal examination.

[0003] The existing vaginal dilator generally includes upper lobe and lower lobe, one of upper lobe and lower lobe is provided with rotating shaft, the other of upper lobe and lower lobe is provided with shaft hole, rotating shaft is installed in shaft hole, so that upper lobe and lower lobe are rotationally connected to form expansion structure.In use, medical staff sends dilator into vagina, and controls the rotation of upper lobe relative to lower lobe, so as to open vagina to a certain space, then the inside of vagina is observed through the window provided on upper lobe, so as to diagnose.

[0004] In order to prevent upper lobe and lower lobe from separating, the end of rotating shaft away from its root extends out of shaft hole and is provided with flange, the diameter of flange is greater than the diameter of shaft hole, so that upper lobe and lower lobe can be buckled together.But because the rotating shaft in prior art is generally solid structure, the flange provided at the end of rotating shaft will increase the difficulty of installing rotating shaft into shaft hole, thereby affecting the assembly efficiency of dilator. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of dilator to reduce the difficulty of installing rotating shaft into shaft hole, so as to improve the assembly efficiency of dilator.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A kind of dilator, including upper lobe and lower lobe, the dilator further includes:

[0008] Rotating shaft, the root of rotating shaft is arranged on one of the upper lobe and the lower lobe, the other of the upper lobe and the lower lobe is provided with shaft hole, the rotating shaft is installed in the shaft hole, so that the upper lobe and the lower lobe are rotationally connected, the end of the rotating shaft away from its root is provided with through slot, the through slot extends along the axial direction of the rotating shaft, and penetrates the rotating shaft along the radial direction of the rotating shaft, the end of the rotating shaft away from its root extends out of the shaft hole, and is provided with flange, the flange extends to the side away from the axis of the rotating shaft along the radial direction of the rotating shaft.

[0009] As preferred, the through slot extends from the end face of the end of the rotating shaft away from its root to the root along the axial direction of the rotating shaft.

[0010] As preferred, the rotation shaft is divided into a first shaft part and a second shaft part by the through groove, a first flange is formed on the side of the first shaft part away from the through groove, and the first flange is circumferentially arranged on the outer periphery of the first shaft part.

[0011] As preferred, a second flange is formed on the side of the second shaft part away from the through groove, and the second flange is circumferentially arranged on the outer periphery of the second shaft part.

[0012] As preferred, the end face of the rotation shaft away from the root part of the rotation shaft is provided with a chamfer.

[0013] As preferred, one of the upper leaf and the lower leaf is provided with a first connecting part, the other of the upper leaf and the lower leaf is provided with a second connecting part, and the rotation shaft is arranged on the first connecting part.

[0014] The first connecting part and the second connecting part are arranged in the axial direction of the rotation shaft, a gusset plate is arranged on the second connecting part, the gusset plate is located between the first connecting part and the second connecting part, the side of the gusset plate away from the second connecting part abuts against the first connecting part, and the shaft hole is arranged on the gusset plate and the second connecting part.

[0015] As preferred, a reinforcing rib is arranged on the second connecting part.

[0016] As preferred, the gusset plate and the second connecting part are integrally formed.

[0017] As preferred, the rotation shaft and the first connecting part are integrally formed.

[0018] As preferred, one of the upper leaf and the lower leaf is provided with two first connecting parts, the other of the upper leaf and the lower leaf is provided with two second connecting parts, the two first connecting parts and the two second connecting parts are arranged in the axial direction of the rotation shaft, and the first connecting parts and the second connecting parts arranged on the same side are rotationally connected through the rotation shaft.

[0019] The utility model discloses beneficial effects:

[0020] The utility model discloses, the through groove can divide the rotating shaft, when assembling, the operator can press the two shaft parts that the through groove has divided to the rotating shaft to make the two shaft parts that the through groove has divided to the rotating shaft close to each other to reduce the radial dimension of rotating shaft, and then can conveniently insert the one end of rotating shaft that is provided with the flanging into the shaft hole, until the one end of rotating shaft that is provided with the flanging stretches out from the shaft hole, after the one end of rotating shaft that is provided with the flanging stretches out from the shaft hole, the operator releases the pressure to the rotating shaft, and two shaft parts can reset to support in the shaft hole, and the flanging of the one end of rotating shaft that is away from the root part of rotating shaft can be stopped in the side of the shaft hole that is away from the root part of rotating shaft, thereby preventing the upper leaf and lower leaf from separating, by the above, the utility model discloses through setting the through groove on the rotating shaft, and then can conveniently assemble the rotating shaft into the shaft hole, and further improve the assembly efficiency of dilator. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is the structure schematic diagram of dilator in the utility model embodiment;

[0022] Fig. 2 It is the structure schematic diagram of first connecting portion, second connecting portion and rotating shaft in the utility model embodiment;

[0023] Fig. 3 It is the structure schematic diagram of upper leaf in the utility model embodiment;

[0024] Fig. 4 It is the structure schematic diagram of lower leaf in the utility model embodiment.

[0025] In the drawing:

[0026] 1, upper leaf;11, first connecting portion;2, lower leaf;21, second connecting portion;211, backing plate;212, reinforcing rib;3, rotating shaft;31, through groove;32, flanging;321, first flanging;322, second flanging;33, first shaft part;34, second shaft part;35, chamfer;4, shaft hole;5, window. DETAILED DESCRIPTION

[0027] The utility model will be further explained in detail below in combination with the drawings and embodiment. It can be understood that the specific embodiment described here is only used to explain the utility model, and is not limited to the utility model. In addition, it needs to be explained that, in order to facilitate the description, only the part related to the utility model is shown in the drawing, not all structures.

[0028] In the description of the utility model, unless another definite provision and limitation, the term "connect", "connection", "fixed" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or become an integral whole;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two elements of the interaction relationship.For the ordinary skilled in the art, the above-mentioned terms can be understood in the utility model according to the specific meaning of the specific circumstances.

[0029] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional features between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0030] In the description of the embodiment, the terms "on", "under", "right", "left" and other orientation or position relationship are based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0031] Please refer to Figs. 1 to 4 The utility model provides a dilator, which comprises upper leaf 1 and lower leaf 2, and the upper leaf 1 and the lower leaf 2 are rotationally connected to form a dilating structure.In use, medical staff sends the dilator into the vagina, controls the rotation of the upper leaf 1 relative to the lower leaf 2, thereby pries open the vagina to a certain space, and then observes the internal condition of the vagina through the window 5 arranged on the upper leaf 1, thereby making a diagnosis.

[0032] It can be understood that, since the specific structure and working principle of the upper leaf 1 and the lower leaf 2 are prior art, the embodiment will not be described here.

[0033] As described above, in the present embodiment, the expander further comprises a rotating shaft 3, the root of the rotating shaft 3 is arranged on the upper leaf 1, the lower leaf 2 is provided with a shaft hole 4, the rotating shaft 3 is arranged in the shaft hole 4, so that the upper leaf 1 and the lower leaf 2 are rotatably connected, and in the present embodiment, a through groove 31 is arranged on the end of the rotating shaft 3 away from the root, the through groove 31 extends along the axial direction of the rotating shaft 3 and penetrates the rotating shaft 3 along the radial direction of the rotating shaft 3, and in addition, the end of the rotating shaft 3 away from the root extends out of the shaft hole 4 and is provided with a flange 32, the flange 32 extends along the radial direction of the rotating shaft 3 to the side away from the axis of the rotating shaft 3.

[0034] As described above, in the present embodiment, the through groove 31 can divide the rotating shaft 3 into two shaft parts, when assembling, the operator can press the two shaft parts of the rotating shaft 3 divided by the through groove 31 to make the two shaft parts of the rotating shaft 3 close to each other, so as to reduce the radial dimension of the rotating shaft 3, and then the end of the rotating shaft 3 provided with the flange 32 can be conveniently inserted into the shaft hole 4 until the end of the rotating shaft 3 provided with the flange 32 extends out of the shaft hole 4, after the end of the rotating shaft 3 provided with the flange 32 extends out of the shaft hole 4, the operator releases the pressure on the rotating shaft 3, and the two shaft parts can be reset to support in the shaft hole 4, and the flange 32 arranged on the end of the rotating shaft 3 away from the root can be stopped on the side of the shaft hole 4 away from the root of the rotating shaft 3, so as to prevent the upper leaf 1 and the lower leaf 2 from being separated. As described above, by arranging the through groove 31 on the rotating shaft 3, the rotating shaft 3 can be conveniently assembled into the shaft hole 4, so as to improve the assembly efficiency of the expander.

[0035] It is worth noting that in other optional embodiments, the root of the rotating shaft 3 can also be arranged on the lower leaf 2, and correspondingly, the upper leaf 1 is provided with a shaft hole 4, so that the upper leaf 1 and the lower leaf 2 can also be rotatably connected, and the present embodiment does not make specific limitation on this.

[0036] It is also worth noting that since the rotating shaft 3 is provided with the through groove 31, the radial dimension of the rotating shaft 3 arranged in the shaft hole 4 can be designed to closely fit the hole wall of the shaft hole 4, so as to avoid the looseness between the upper leaf 1 and the lower leaf 2, and since the two shaft parts of the rotating shaft 3 divided by the through groove 31 can be close to each other, even if the rotating shaft 3 closely fits the hole wall of the shaft hole 4, the upper leaf 1 and the lower leaf 2 can still smoothly rotate relative to each other.

[0037] Further, the through groove 31 extends along the axial direction of the rotating shaft 3 from the end face of the end of the rotating shaft 3 away from the root to the root, so as to divide the rotating shaft 3 into two independent shaft parts, and then the operator can more conveniently press the two shaft parts of the rotating shaft 3 divided by the through groove 31 to make the two shaft parts of the rotating shaft 3 close to each other, so as to reduce the radial dimension of the rotating shaft 3, that is, the present embodiment can more conveniently assemble the rotating shaft 3 into the shaft hole 4, so as to further improve the assembly efficiency of the expander.

[0038] Based on the foregoing, in the present embodiment, the rotating shaft 3 is divided into a first shaft portion 33 and a second shaft portion 34 by the through groove 31, wherein the first shaft portion 33 is formed with a first flange 321 on the side away from the through groove 31, and the first flange 321 is circumferentially arranged on the outer periphery of the first shaft portion 33, so as to increase the contact area between the flange 32 and the lower leaf 2, thereby more firmly stopping the rotating shaft 3 from being separated from the shaft hole 4, and further more effectively preventing the upper leaf 1 and the lower leaf 2 from being separated.

[0039] The second shaft portion 34 is formed with a second flange 322 on the side away from the through groove 31, and the second flange 322 is circumferentially arranged on the outer periphery of the second shaft portion 34, that is, in the present embodiment, the flange 32 formed on the end of the rotating shaft 3 away from the root thereof is composed of the first flange 321 and the second flange 322, and the contact areas between the first flange 321 and the lower leaf 2 and between the second flange 322 and the lower leaf 2 are both large, so as to further increase the contact area between the flange 32 and the lower leaf 2, thereby more firmly stopping the rotating shaft 3 from being separated from the shaft hole 4, and further more effectively preventing the upper leaf 1 and the lower leaf 2 from being separated.

[0040] In summary, in the present embodiment, the number of the through grooves 31 on the rotating shaft 3 is only one, rather than two or more, so as to ensure that the rotating shaft 3 can be conveniently assembled into the shaft hole 4, while also ensuring that the contact area between the flange 32 and the lower leaf 2 is maximized, thereby making the flange 32 firmly stop the rotating shaft 3 from being separated from the shaft hole 4.

[0041] Moreover, since the contact area between the flange 32 and the lower leaf 2 is large enough, the present embodiment can also improve the structural strength of the dilator.

[0042] Furthermore, the end face of the end of the rotating shaft 3 away from the root thereof is provided with a chamfer 35, based on the foregoing, the chamfer 35 is arranged on the flange 32, more specifically, the chamfer 35 is arranged on the first flange 321 and the second flange 322, so as to reduce the area of the end face of the end of the rotating shaft 3 away from the root thereof, thereby making it more convenient for the operator to insert the end of the rotating shaft 3 provided with the flange 32 into the shaft hole 4 during assembly, and further reducing the difficulty of assembling the rotating shaft 3 into the shaft hole 4.

[0043] In addition, based on the foregoing, in the present embodiment, the root of the rotating shaft 3 is arranged on the upper leaf 1, and the lower leaf 2 is provided with the shaft hole 4, specifically, the upper leaf 1 is provided with the first connecting part 11, the lower leaf 2 is provided with the second connecting part 21, the rotating shaft 3 is arranged on the first connecting part 11, the first connecting part 11 and the second connecting part 21 are arranged along the axial direction of the rotating shaft 3, the second connecting part 21 is provided with the gusset plate 211, the gusset plate 211 is located between the first connecting part 11 and the second connecting part 21, and the side of the gusset plate 211 away from the second connecting part 21 abuts against the first connecting part 11, and the shaft hole 4 is arranged on the gusset plate 211 and the second connecting part 21, that is, in the present embodiment, the second connecting part 21 and the gusset plate 211 are arranged on the outer periphery of the rotating shaft 3, thereby further increasing the structural strength of the dilator and further ensuring that the upper leaf 1 and the lower leaf 2 can smoothly rotate relative to each other.

[0044] Further, in order to further ensure that the upper leaf 1 and the lower leaf 2 can smoothly rotate relative to each other, the upper leaf 1 is provided with two first connecting parts 11, and the lower leaf 2 is provided with two second connecting parts 21, and the two first connecting parts 11 and the two second connecting parts 21 are arranged along the axial direction of the rotating shaft 3, and the first connecting parts 11 and the second connecting parts 21 arranged on the same side are connected by the rotating shaft 3.

[0045] It should be noted that, based on the foregoing, the upper leaf 1 is provided with the window 5, specifically, the two first connecting parts 11 are integrally formed, and the window 5 is formed between the two first connecting parts 11, but since the gusset plate 211 is arranged between the first connecting part 11 and the second connecting part 21 in the present embodiment, the present embodiment can increase the distance between the two first connecting parts 11 for arranging the rotating shaft 3 along the axial direction of the rotating shaft 3, thereby increasing the window 5, and further facilitating medical personnel to observe the inside of the vagina through the window 5.

[0046] It can be understood that in other optional embodiments, the lower leaf 2 can also be provided with the first connecting part 11, and the upper leaf 1 is provided with the second connecting part 21, and the present embodiment does not make specific limitations thereto.

[0047] It should be noted that the specific structure of the first connecting part 11 and the second connecting part 21 depends on the specific arrangement position, if the first connecting part 11 is arranged on the upper leaf 1, and the second connecting part 21 is arranged on the lower leaf 2, then the first connecting part 11 is a curved plate, and the second connecting part 21 is an ear-shaped plate, if the first connecting part 11 is arranged on the lower leaf 2, and the second connecting part 21 is arranged on the upper leaf 1, then correspondingly, the first connecting part 11 is an ear-shaped plate, and the second connecting part 21 is a curved plate.

[0048] In the embodiment, the first connecting part 11 is a curved plate, and the second connecting part 21 is an ear-shaped plate.

[0049] Further, the second connecting part 21 is provided with a reinforcing rib 212, which is integrally formed on the second connecting part 21 and other structures of the lower lobe 2, so as to further increase the structural strength of the dilator.

[0050] In addition, the second connecting part 21 and the pad plate 211 are integrally formed, so as to further increase the structural strength of the dilator.

[0051] Further, the first connecting part 11 and the rotating shaft 3 are integrally formed, so as to further increase the structural strength of the dilator.

[0052] Obviously, the above embodiment of the present application is merely an example for clearly illustrating the present application, and is not a limitation on the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An expander comprising an upper leaf (1) and a lower leaf (2), characterized in that, The expander also includes: A rotating shaft (3) is provided at its root on one of the upper leaf (1) and the lower leaf (2). The other of the upper leaf (1) and the lower leaf (2) is provided with a shaft hole (4). The rotating shaft (3) is installed in the shaft hole (4) so ​​that the upper leaf (1) and the lower leaf (2) are rotatably connected. A through groove (31) is provided at one end of the rotating shaft (3) away from its root. The through groove (31) extends along the axial direction of the rotating shaft (3) and passes through the rotating shaft (3) radially. The end of the rotating shaft (3) away from its root extends out of the shaft hole (4) and is provided with a flange (32). The flange (32) extends radially along the rotating shaft (3) to the side away from the axis of the rotating shaft (3).

2. An expander according to claim 1, characterized in that, The through groove (31) extends along the axial direction of the shaft (3) from the end face of the shaft (3) away from its root to the root.

3. An expander according to claim 1, characterized in that, The rotating shaft (3) is divided into a first shaft portion (33) and a second shaft portion (34) by the through groove (31). A first flange (321) is formed on the side of the first shaft portion (33) away from the through groove (31). The first flange (321) surrounds the outer periphery of the first shaft portion (33) along the circumference of the rotating shaft (3).

4. An expander according to claim 3, characterized in that, The second shaft portion (34) forms a second flange (322) on the side opposite to the through groove (31), and the second flange (322) surrounds the outer periphery of the second shaft portion (34) along the circumferential direction of the rotating shaft (3).

5. An expander according to claim 1, characterized in that, The end face of the shaft (3) away from its root is provided with a chamfer (35).

6. An expander according to claim 1, characterized in that, One of the upper leaf (1) and the lower leaf (2) is provided with a first connecting part (11), and the other of the upper leaf (1) and the lower leaf (2) is provided with a second connecting part (21). The rotating shaft (3) is provided on the first connecting part (11). The first connecting part (11) and the second connecting part (21) are spaced apart along the axial direction of the rotating shaft (3). A pad (211) is provided on the second connecting part (21). The pad (211) is located between the first connecting part (11) and the second connecting part (21), and the side of the pad (211) away from the second connecting part (21) abuts against the first connecting part (11). The shaft hole (4) is opened on the pad (211) and the second connecting part (21).

7. An expander according to claim 6, characterized in that, The second connecting part (21) is provided with a reinforcing rib (212).

8. An expander according to claim 6, characterized in that, The pad (211) and the second connecting part (21) are integrally formed.

9. An expander according to claim 6, characterized in that, The rotating shaft (3) and the first connecting part (11) are integrally formed.

10. An expander according to claim 6, characterized in that, One of the upper leaf (1) and the lower leaf (2) is provided with two first connecting parts (11), and the other of the upper leaf (1) and the lower leaf (2) is provided with two second connecting parts (21). The two first connecting parts (11) and the two second connecting parts (21) are arranged at intervals along the axial direction of the rotating shaft (3). The first connecting parts (11) and the second connecting parts (21) provided on the same side are rotatably connected through the rotating shaft (3).

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