CN111990954B - Vaginal dilator for gynaecology - Google Patents
Vaginal dilator for gynaecology Download PDFInfo
- Publication number
- CN111990954B CN111990954B CN202010746728.4A CN202010746728A CN111990954B CN 111990954 B CN111990954 B CN 111990954B CN 202010746728 A CN202010746728 A CN 202010746728A CN 111990954 B CN111990954 B CN 111990954B
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- China
- Prior art keywords
- hole
- plate
- sliding block
- sliding
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 125000003003 spiro group Chemical group 0.000 claims description 6
- 241000405070 Percophidae Species 0.000 abstract description 3
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract description 3
- 230000007847 structural defect Effects 0.000 abstract description 2
- 210000001215 vagina Anatomy 0.000 description 21
- 238000009434 installation Methods 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/32—Devices for opening or enlarging the visual field, e.g. of a tube of the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/303—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for the vagina, i.e. vaginoscopes
Abstract
The invention belongs to the technical field of medical instruments, and particularly relates to a gynecological vaginal dilator, which comprises a fixed supporting rod and two movable supporting rods, wherein one end of the fixed supporting rod is fixedly connected with a supporting plate, the whole supporting plate is triangular, an observation hole is formed in the supporting plate, a T-shaped sliding block is slidably arranged in a mounting groove, a threaded rod is connected to the T-shaped sliding block in a threaded manner, the lower end of the threaded rod is movably connected with the supporting plate, a sliding plate is fixedly arranged on the T-shaped sliding block, two transverse slot holes are formed in the sliding plate, a connecting rod is fixedly arranged at one end of the movable supporting rod, a sliding block is fixedly arranged at the upper part of the end face of the connecting rod, which is far away from one end of the movable supporting rod, the sliding block is positioned in an oblique slot hole, a sliding column is arranged at the free end of the sliding block, a limiting plate is fixedly arranged at the free end of the sliding column, and the sliding plate and the supporting plate are positioned between the connecting rod and the limiting plate. The purpose is that: solves the problem of low comfort level of patients during the insertion caused by the structural defect of the existing duckbill endoscope.
Description
Technical Field
The invention belongs to the technical field of medical appliances, and particularly relates to a gynecological vaginal dilator.
Background
In clinical medicine, a duckbilled endoscope is generally adopted to check the vagina of a woman, and the duckbilled endoscope is generally composed of an upper opening sheet, a lower opening sheet and a handle.
However, in the actual use process, because the duckbill type endoscope aims to open the tissue structure in the vagina as much as possible, the upper and lower two-page opening sheets have certain width, even if the upper and lower two-page opening sheets are folded before use and then inserted into the vagina, the width of the upper and lower two-page opening sheets is larger, and the comfort level of a patient is low during insertion.
Disclosure of Invention
The purpose of the invention is that: aims at providing a gynecological vaginal dilator which is used for solving the problem of low comfort level of patients during the insertion caused by the structural defect of the existing duckbill endoscope.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the utility model provides a gynaecology is with vaginal dilator, includes dead lever and two movable support poles, dead lever one end fixedly connected with backup pad, the backup pad is whole triangle-shaped, the observation hole has been seted up in the backup pad, the dead lever is located the observation hole below, two chute holes have been seted up in the backup pad, the chute hole is outwards inclined gradually from the bottom up, the mounting groove has been seted up in the observation hole top to the backup pad, slidable mounting has T shape slider in the mounting groove, the spiro union has the threaded rod on the T shape slider, threaded rod lower extreme and backup pad swing joint, fixed mounting has the sliding plate on the T shape slider, two horizontal slot holes have been seted up on the sliding plate, movable support pole one end fixed mounting has the connecting rod, the upper portion fixed mounting that movable support pole one end terminal surface was kept away from to the connecting rod has the sliding block, the sliding block is located the chute hole, the sliding column is installed to the sliding column free end, the sliding column free end still fixed mounting has the limiting plate, sliding plate and backup pad are located between connecting rod and the limiting plate.
Further limited, the backup pad has the mounting panel in mounting groove integrated into one piece, set up the T-slot of falling on the mounting panel, threaded rod lower extreme fixed mounting has the T-shape round platform of falling, the T-shape round platform of falling is located the T-slot of falling. The threaded rod and the supporting plate are matched with each other through the inverted T-shaped round table and the inverted T-shaped groove, so that movable connection is achieved, the structure is simple, and the installation is convenient.
Further limited, threaded rod upper end integrated into one piece has the round platform, still the cover is equipped with the collar on the round platform, radially seted up first screw thread through-hole on the lateral wall of collar, the spiro union has first bulb plunger in the first screw thread through-hole, a plurality of first hemisphere grooves have been seted up to the circumference on the round platform, the bulb part card of first bulb plunger is established in one of them first hemisphere inslot. By means of the structural design, through the mutual matching of the first ball plunger and the first ball groove, the maximum torque applied to the threaded rod from the mounting ring is limited, and the problem that the vagina is damaged due to the fact that the fixed support rod and the two movable support rods are excessively unfolded due to overlarge rotation force of the threaded rod is avoided.
Further defined, the mounting ring has a wheel fixedly mounted thereon. By means of the structural design, the force arm when the threaded rod is rotated can be increased through the rotating wheel, so that the threaded rod is rotated more labor-saving.
Further limiting, the sliding block is integrally provided with a hexagonal boss, the end face of the hexagonal boss is provided with a threaded blind hole, the sliding column and the limiting plate are integrally formed, the sliding column is provided with a first hexagonal blind hole, the hexagonal boss is arranged in the first hexagonal blind hole in a penetrating mode, the limiting plate is provided with a through hole, a fixing screw is arranged in the through hole in a penetrating mode, and the fixing screw is connected in the threaded blind hole in a threaded mode. The sliding plate and the supporting plate can be clamped between the connecting rod and the limiting plate through the structural design, and the sliding plate is simple in structure and convenient to install.
Further defined, the fixed support rod and the two movable support rods are cylindrical after being folded. By means of the structural design, when the fixed support rod and the two movable support rods are folded and inserted into the vagina, comfort level of a patient is higher.
Further limited, the front ends of the fixed support rods and the two movable support rods after being folded are spherical. By means of the structural design, when the fixed support rod and the two movable support rods are folded and inserted into the vagina, comfort level of a patient is higher.
Further defined, the slider is in the shape of a bar. By the structural design, the movable supporting rod can be prevented from rotating.
Further limited, the terminal surface that fixed bracing piece one end was kept away from to the backup pad has the hexagonal spliced pole in observation hole below integrated into one piece, demountable installation has the handle on the hexagonal spliced pole, the second hexagonal blind hole has been seted up on the handle, the second hemisphere groove has been seted up on the hexagonal spliced pole, the radial second screw thread through-hole that has seted up on the lateral wall of handle, the spiro union has the second bulb plunger in the second screw thread through-hole, the bulb part card of second bulb plunger is established in the second hemisphere inslot. Such structural design, when inserting the expander in the vagina, accessible handle promotes the expander, and at rotatory runner for when fixed bracing piece and two movable bracing pieces open, the accessible grasps the mode of handle, fixes the backup pad, adjusts the back, can follow the hexagonal spliced pole and take off the handle, convenient subsequent operation, it is more convenient to use.
The invention adopting the technical scheme has the following advantages:
1. the three strip-shaped supporting rods are used for supporting the inside of the vagina, the width of the duck-bill endoscope is smaller than that of the existing duck-bill endoscope when the duck-bill endoscope is folded, and the comfort level of the duck-bill endoscope is higher than that of the existing duck-bill endoscope when the duck-bill endoscope is inserted;
2. when the vagina is opened, a three-point support is formed for the tissue structure in the vagina, so that the observation field in the vagina is enough exposed;
3. the fixed support rod and the two movable support rods are cylindrical after being folded, and the front end of the cylindrical after being folded is spherical, so that the structural design is higher in comfort level of a patient when the fixed support rod and the two movable support rods are folded and inserted into vagina.
4. Through the mutually supporting of first bulb plunger and first hemisphere groove, inject the maximum torsion of applying to the threaded rod from the collar, avoid because of the threaded rod dynamics of rotating is too big for fixed bracing piece and two movable bracing pieces are excessively expanded, and the problem that leads to the fact the damage to the vagina.
Drawings
The invention can be further illustrated by means of non-limiting examples given in the accompanying drawings;
fig. 1 is a schematic view of a vaginal dilator for gynaecology according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a second embodiment of a gynecological vaginal dilator according to the present invention;
fig. 3 is a schematic diagram III of an embodiment of a gynecological vaginal dilator according to the present invention;
fig. 4 is a schematic view showing the structures of the fixing support rod and the support plate part in an embodiment of the gynecological vaginal dilator according to the present invention;
fig. 5 is a schematic view showing a structure of the fixing support rod and the support plate part in an embodiment of the gynecological vaginal dilator according to the present invention;
FIG. 6 is a schematic view of an exploded view of the movable support rod and connecting rod portions of an embodiment of a gynecological vaginal dilator according to the present invention;
fig. 7 is a schematic view of an exploded view of the threaded rod and the rotating wheel portion of an embodiment of a gynecological vaginal dilator according to the present invention;
FIG. 8 is an enlarged schematic view of FIG. 7A;
fig. 9 is a schematic view showing the structure of the T-shaped slider and the sliding plate portion in an embodiment of the gynecological vaginal dilator according to the present invention;
the main reference numerals are as follows:
a fixed supporting rod 1,
A movable supporting rod 2, a connecting rod 21, a sliding block 22, a sliding column 23, a hexagonal boss 230, a threaded blind hole 231, a through hole 232, a limiting plate 24,
A supporting plate 3, a hexagonal connecting column 301, a handle 302, a viewing hole 31, a chute hole 32, a mounting groove 33, a mounting plate 34, an inverted T-shaped groove 340,
A sliding plate 4, a T-shaped sliding block 40, a transverse slot hole 41,
Threaded rod 5, inverted T-shaped round table 51, round table 52, first hemispherical groove 520, mounting ring 53, first threaded through hole 530, and rotating wheel 54.
Detailed Description
The present invention will be described in detail below with reference to the drawings and the specific embodiments, wherein like or similar parts are designated by the same reference numerals throughout the drawings or the description, and implementations not shown or described in the drawings are in a form well known to those of ordinary skill in the art. In addition, directional terms such as "upper", "lower", "top", "bottom", "left", "right", "front", "rear", etc. in the embodiments are merely directions with reference to the drawings, and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 9, the gynecological vaginal dilator comprises a fixed supporting rod 1 and two movable supporting rods 2, wherein one end of the fixed supporting rod 1 is fixedly connected with a supporting plate 3, the whole supporting plate 3 is triangular, an observation hole 31 is formed in the supporting plate 3, the fixed supporting rod 1 is positioned below the observation hole 31, two chute holes 32 are formed in the supporting plate 3, the chute holes 32 incline gradually from bottom to top, a mounting groove 33 is formed in the upper part of the observation hole 31, a T-shaped sliding block 40 is slidably mounted in the mounting groove 33, a threaded rod 5 is screwed on the T-shaped sliding block 40, the lower end of the threaded rod 5 is movably connected with the supporting plate 3, a sliding plate 4 is fixedly mounted on the T-shaped sliding block 40, two transverse groove holes 41 are formed in the sliding plate 4, a connecting rod 21 is fixedly mounted at one end of the movable supporting rod 2, a sliding block 22 is fixedly mounted at the upper part of one end face of the connecting rod 21, the sliding block 22 is positioned in the chute holes 32, a sliding column 23 is positioned in the transverse groove hole 41, a free end of the sliding column 23 is fixedly mounted with a limiting plate 24, and the limiting plate 24 is positioned between the sliding plate 24 and the supporting plate 3.
The backup pad 3 has mounting panel 34 in mounting groove 33 integrated into one piece, has seted up the inverted T-shaped groove 340 on the mounting panel 34, and threaded rod 5 lower extreme is equipped with the inverted T-shaped round platform 51, and inverted T-shaped round platform 51 is located the inverted T-shaped groove 340. The threaded rod 5 and the supporting plate 3 are matched with each other through the inverted T-shaped round table 51 and the inverted T-shaped groove 340, so that movable connection is completed, and the structure is simple and the installation is convenient.
The upper end integrated into one piece of threaded rod 5 has round platform 52, still overlaps on the round platform 52 and is equipped with collar 53, radially has seted up first screw thread through-hole 530 on the lateral wall of collar 53, and the spiro union has first bulb plunger in the first screw thread through-hole 530, and a plurality of first hemisphere grooves 520 have been seted up to round platform 52 on the circumference, and the bulb part card of first bulb plunger is established in one of them first hemisphere groove 520. Through the mutual cooperation of the first ball plunger and the first half ball groove 520, the maximum torsion applied to the threaded rod 5 from the mounting ring 53 is limited, and the problem that the vagina is damaged due to the fact that the rotation force of the threaded rod 5 is overlarge to enable the fixed support rod 1 and the two movable support rods 2 to be excessively unfolded is avoided.
The mounting ring 53 is fixedly provided with a rotating wheel 54. The arm of force when rotating the threaded rod 5 can be increased by the rotating wheel 54, so that the rotation of the threaded rod 5 is more labor-saving.
The sliding block 22 is integrally formed with a hexagonal boss 230, the end face of the hexagonal boss 230 is provided with a threaded blind hole 231, the sliding column 23 and the limiting plate 24 are integrally formed, the sliding column 23 is provided with a first hexagonal blind hole, the hexagonal boss 230 is arranged in the first hexagonal blind hole in a penetrating mode, the limiting plate 24 is provided with a through hole 232, a fixing screw is arranged in the through hole 232 in a penetrating mode, and the fixing screw is connected in the threaded blind hole 231 in a threaded mode. The sliding plate 4 and the supporting plate 3 can be clamped between the connecting rod 21 and the limiting plate 24, and the structure is simple and the installation is convenient.
The fixed support rod 1 and the two movable support rods 2 are cylindrical after being folded. When the fixed support rod 1 and the two movable support rods 2 are folded and inserted into vagina, the comfort level of a patient is higher.
The front ends of the fixed support rods 1 and the two movable support rods 2 after being folded are spherical. When the fixed support rod 1 and the two movable support rods 2 are folded and inserted into vagina, the comfort level of a patient is higher.
The slider 22 is in the shape of a bar. The rotation of the movable supporting rod 2 can be avoided.
The terminal surface that fixed bracing piece 1 one end was kept away from to backup pad 3 has hexagonal spliced pole 301 in observation hole 31 below integrated into one piece, and demountable installation has handle 302 on the hexagonal spliced pole 301, has seted up the second hexagonal blind hole on the handle 302, has seted up the second hemisphere groove on the hexagonal spliced pole 301, radially has seted up the second screw thread through-hole on the lateral wall of handle 302, and the spiro union has the second bulb plunger in the second screw thread through-hole, and the bulb part card of second bulb plunger is established in the second hemisphere inslot. When inserting the expander in the vagina, accessible handle 302 promotes the expander, and when rotatory runner 54 for fixed support pole 1 and two movable support poles 2 open, the accessible grasps the mode of handle 302, fixes backup pad 3, after the regulation is accomplished, can take off handle 302 from hexagonal spliced pole 301, convenient follow-up operation, and it is more convenient to use.
In this embodiment, when in use, the handle 302 is connected by the hexagonal connecting column 301, and then the rotating wheel 54 is rotated, so that the fixed support rod 1 and the two movable support rods 2 are folded to be cylindrical, then the fixed support rod 1 and the two movable support rods 2 are coated with lubricant, and then the fixed support rod 1 and the two movable support rods 2 are inserted into the vagina;
after the vaginal tissue support is inserted into place, the rotating wheel 54 is reversely rotated, the T-shaped sliding block 40 and the sliding plate 4 are driven to move upwards relative to the support plate 3 by the threaded rod 5, and then the two movable support rods 2 are driven to move obliquely upwards at two sides respectively, so that the tissue structure in the vagina is supported;
after the tissue structure in the vagina is opened, the handle 302 is taken down, and the subsequent examination can be performed through the observation hole 31;
after the examination is completed, the handle 302 is reinstalled, the rotating wheel 54 is rotated again, the fixed support rod 1 and the two movable support rods 2 are folded again, and finally the dilator is pulled out of the vagina.
The gynecological vaginal dilator provided by the invention is described in detail above. The description of the specific embodiments is only intended to aid in understanding the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (8)
1. A vaginal dilator for gynaecology, which is characterized in that: including fixed stay bar (1) and two movable stay bars (2), fixed stay bar (1) one end fixedly connected with backup pad (3), backup pad (3) are triangle-shaped wholly, set up observation hole (31) on backup pad (3), fixed stay bar (1) are located observation hole (31) below, set up two chute holes (32) on backup pad (3), chute holes (32) slope outwards gradually from the bottom, mounting groove (33) have been seted up in observation hole (31) top in backup pad (3), mounting groove (33) slidable mounting has T shape slider (40), threaded rod (5) are gone up in T shape slider (40), threaded rod (5) lower extreme and backup pad (3) swing joint, fixed mounting has sliding plate (4) on T shape slider (40), two cross slot holes (41) have been seted up on sliding plate (4), movable stay bar (2) one end fixed mounting has connecting rod (21), connecting rod (21) keep away from on the terminal surface (2) sliding block (22) and have sliding block (22) slidable mounting groove (22) free end, sliding block (22) slidable mounting has free end (22), the sliding column (23) is positioned in the transverse slot hole (41), a limiting plate (24) is fixedly arranged at the free end of the sliding column (23), and the sliding plate (4) and the supporting plate (3) are positioned between the connecting rod (21) and the limiting plate (24);
the support plate (3) is provided with a mounting plate (34) integrally formed in the mounting groove (33), an inverted T-shaped groove (340) is formed in the mounting plate (34), an inverted T-shaped round table (51) is fixedly arranged at the lower end of the threaded rod (5), and the inverted T-shaped round table (51) is located in the inverted T-shaped groove (340).
2. A gynecological vaginal dilator according to claim 1 wherein: the utility model discloses a ball plunger, including threaded rod (5), threaded rod, ball plunger, ball portion, first ball plunger, threaded rod (5) upper end integrated into one piece has round platform (52), still the cover is equipped with collar (53) on round platform (52), first screw thread through-hole (530) have radially been seted up on the lateral wall of collar (53), the spiro union has first ball plunger in first screw thread through-hole (530), a plurality of first half ball grooves (520) have been seted up to circumference on round platform (52), the bulb part card of first ball plunger is established in one of them first half ball groove (520).
3. A gynecological vaginal dilator as claimed in claim 2, wherein: the rotating wheel (54) is fixedly arranged on the mounting ring (53).
4. A gynecological vaginal dilator according to claim 1 wherein: the sliding block is characterized in that a hexagonal boss (230) is integrally formed on the sliding block (22), a threaded blind hole (231) is formed in the end face of the hexagonal boss (230), a sliding column (23) and a limiting plate (24) are integrally formed, a first hexagonal blind hole is formed in the sliding column (23), the hexagonal boss (230) is arranged in the first hexagonal blind hole in a penetrating mode, a through hole (232) is formed in the limiting plate (24), a fixing screw is arranged in the through hole (232) in a penetrating mode, and the fixing screw is connected in the threaded blind hole (231) in a threaded mode.
5. A gynecological vaginal dilator according to claim 1 wherein: the fixed support rods (1) and the two movable support rods (2) are cylindrical after being folded.
6. A gynecological vaginal dilator as claimed in claim 5 wherein: the front ends of the fixed support rods (1) and the two movable support rods (2) after being folded are spherical.
7. A gynecological vaginal dilator as claimed in claim 5 wherein: the sliding block (22) is strip-shaped.
8. A gynecological vaginal dilator according to claim 1 wherein: the end face of one end of the supporting plate (3) far away from the fixed supporting rod (1) is integrally formed with a hexagonal connecting column (301) below the observation hole (31), a handle (302) is detachably arranged on the hexagonal connecting column (301), a second hexagonal blind hole is formed in the handle (302), a second hemispherical groove is formed in the hexagonal connecting column (301), a second threaded through hole is radially formed in the side wall of the handle (302), a second ball plunger is connected in the second threaded through hole in a threaded mode, and a ball part of the second ball plunger is clamped in the second hemispherical groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010746728.4A CN111990954B (en) | 2020-07-29 | 2020-07-29 | Vaginal dilator for gynaecology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010746728.4A CN111990954B (en) | 2020-07-29 | 2020-07-29 | Vaginal dilator for gynaecology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111990954A CN111990954A (en) | 2020-11-27 |
| CN111990954B true CN111990954B (en) | 2023-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010746728.4A Active CN111990954B (en) | 2020-07-29 | 2020-07-29 | Vaginal dilator for gynaecology |
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| CN (1) | CN111990954B (en) |
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| CN109730731A (en) * | 2019-03-20 | 2019-05-10 | 重庆医科大学附属第二医院 | A kind of novel traction device suitable for ankle arthroscopy operation |
| CN210228105U (en) * | 2019-04-26 | 2020-04-03 | 福建省美德医械制造有限公司 | High-stability disposable sterile vaginal dilator |
| CN209863781U (en) * | 2019-04-30 | 2019-12-31 | 河南省蓝天医疗器械有限公司 | Aseptic vaginal dilator convenient to operate |
| CN210077906U (en) * | 2019-05-27 | 2020-02-18 | 新乡医学院第三附属医院 | Oral implantation positioner |
| CN210784269U (en) * | 2019-06-14 | 2020-06-19 | 孙佩佩 | Anus dilator for anorectal department |
| CN210643994U (en) * | 2019-07-08 | 2020-06-02 | 李倩 | Safe vaginal dilator for gynecologist |
| CN210871772U (en) * | 2019-07-25 | 2020-06-30 | 郑州市中心医院 | Rib expanding device for thoracic cavity operation |
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| CN111990954A (en) | 2020-11-27 |
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