CN112690841B - Self-locking type birth canal expanding device - Google Patents
Self-locking type birth canal expanding device Download PDFInfo
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- CN112690841B CN112690841B CN202011605883.0A CN202011605883A CN112690841B CN 112690841 B CN112690841 B CN 112690841B CN 202011605883 A CN202011605883 A CN 202011605883A CN 112690841 B CN112690841 B CN 112690841B
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- lifting
- handle
- supporting piece
- wheel
- ratchet wheel
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
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- 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
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/42—Gynaecological or obstetrical instruments or methods
Abstract
The invention provides a self-locking type birth canal expanding device, which comprises an upper supporting piece and a lower supporting piece matched with the upper supporting piece, wherein the upper supporting piece and the lower supporting piece are in a duckbill shape, a handle between slide bars on two sides is provided with an internal and external through lifting groove, a push-pull rod is movably arranged in an arc groove, one end of the push-pull rod, which is far away from a second wheel claw, is fixedly connected to a first piston, the first piston is connected with the tail end of a first cylinder body through a traction spring, the first cylinder body is fixedly arranged in the handle, and a force feedback plate is movably arranged in a feedback plate groove arranged at the front end of the lower supporting piece. Effectively reduces discomfort and pain in the process of the birth canal dilatation.
Description
Technical Field
The invention relates to the technical field of birth canal expanding instruments, in particular to a self-locking type birth canal expanding device.
Background
A disposable vaginal dilator with application number 'CN 200810196150.9' in the prior art comprises a lower dilating plate and an upper dilating plate, wherein the lower dilating plate comprises a lower wing with a left shaft pin and a right shaft pin and a lower handle, the upper dilating plate comprises an upper wing and an upper handle, the upper handle is provided with a left shaft hole, a right shaft hole and a view port, the left shaft pin and the right shaft pin on the lower dilating plate are in pin joint with the left shaft hole and the right shaft hole of the upper dilating plate, the lower handle of the lower dilating plate is provided with a dilating adjusting rod with oblique buckle teeth, the upper handle of the upper dilating plate is provided with an upper supporting frame and a positioning buckle connected with the upper supporting frame, the positioning buckle is engaged with the oblique buckle teeth of the dilating adjusting rod, the vaginal dilator has simple structure, can carry out dilating and positioning operations with one hand, and simultaneously, the dilating angle can be changed by slightly pressing the control plate part on the positioning buckle, and the fixing is firm, and the operation and examination time is shortened because the operation is not carried out by two hands.
However, the above-mentioned disposable vaginal dilator still has obvious defects in the using process: 1. the opening and closing size of the device depends on feedback hand feeling of doctors in the expansion process, and the birth canal of different people is opened and closed in different sizes, so that the injury of the birth canal can be caused when the expansion is too large, and the device and the prior art lack a device capable of feeding back the squeezing degree of the inner wall of the vagina to the expansion forceps; 2. the birth canal expanding device in the device and the prior art mostly depends on the holding of the palm to support the expanding device, the opening and closing process is uneven due to the opening and closing mode, pain of a patient is easily aggravated, and meanwhile, the opening sizes of the inner and outer expanding openings are not consistent due to the opening mode around the supporting point, so that the external observation visual field is influenced.
Disclosure of Invention
The invention aims to provide a self-locking birth canal expansion device to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a self-locking birth canal expanding device comprises an upper supporting piece and a lower supporting piece matched with the upper supporting piece, wherein the upper supporting piece and the lower supporting piece are of a duckbill shape, the tail end of the lower supporting piece is fixedly connected with a handle, a pair of sliding strips are fixedly arranged on two sides of the handle, lifting grooves which are internally and externally penetrated are arranged on the handle between the sliding strips, lifting plates matched with the handle are fixedly arranged on two sides of the tail end of the upper supporting piece, sliding grooves matched with the sliding strips are arranged on the lifting plates on two sides, lifting racks are fixedly arranged on the lifting plates between the sliding grooves, the lifting racks on two sides respectively extend into the handle through the lifting grooves on two sides, a pair of lifting gears are movably arranged in the handle through a rotating shaft, the lifting gears on two sides are respectively meshed with the lifting racks, one ends, far away from the lifting racks, of the lifting gears on two sides are respectively meshed with the same double-sided rack, one side of the double-sided rack is further meshed with a driving gear, the driving gear is fixedly mounted on a rotating shaft of the expansion crank, a first ratchet wheel and a second ratchet wheel are further fixedly mounted on the rotating shaft of the expansion crank, the first ratchet wheel and the second ratchet wheel are arranged in a reverse direction, and the first ratchet wheel and the second ratchet wheel are respectively in movable fit with a first wheel claw and a second wheel claw;
the first wheel claw is movably arranged in the handle through a rotating shaft, one end of the first wheel claw, far away from the first ratchet wheel, is fixedly connected with the shifting sheet, the shifting sheet extends to the outside of the handle through a shifting groove formed in the side edge of the handle, the bottom of one side, far away from the first ratchet wheel, of the first wheel claw is fixedly provided with an extrusion spring, and the extrusion spring is fixedly arranged in the handle through a spring plate;
the hydraulic cylinder is characterized in that an arc-shaped groove is formed in the second wheel claw, a push-pull rod is movably mounted in the arc-shaped groove, one end, away from the second wheel claw, of the push-pull rod is fixedly connected to a first piston, the first piston is located inside a first cylinder body, the first piston is connected with the tail end of the first cylinder body through a traction spring, the first cylinder body is fixedly mounted inside a handle, the first cylinder body is communicated with a plurality of second cylinder bodies through hydraulic oil paths, the second pistons are movably arranged in the second cylinder bodies, one ends, away from the hydraulic oil paths, of the second pistons are fixedly connected with a force feedback plate through connecting rods, the second pistons are fixedly connected with the tail portions of the second cylinder bodies through expansion springs, and the force feedback plate is movably arranged in a feedback plate groove formed in the front end of the lower support piece.
Preferably, the number of the second cylinder bodies is four, and the four second cylinder bodies are uniformly arranged on a hydraulic oil circuit at intervals.
Preferably, the lifting chute is formed in the side edge of the double-sided rack, a lifting limiting block is movably arranged in the lifting chute, and the lifting limiting block is fixedly installed inside the handle.
Compared with the prior art, the invention has the beneficial effects that:
1. the force feedback plate can be extruded through the inner wall of the birth canal in the process of expanding the birth canal, when the force feedback plate is extruded upwards to a certain distance, the hydraulic oil in the hydraulic oil circuit pushes the first wheel claw to be matched with the first ratchet wheel, so that the rotation of the first ratchet wheel is limited, and the continuous expansion of the upper supporting piece is further prevented, the self-locking mode overcomes the defect that judgment is only carried out through the hand feeling of a doctor in the prior art, the injury of the birth canal caused by excessive expansion of the birth canal can be effectively prevented, and the operation difficulty of the doctor is reduced;
2. the obstetric canal expansion device utilizes the translation of the upper supporting piece to expand the obstetric canal, the palm is not needed to press the obstetric canal expansion device in the expansion process, the translation of the upper supporting piece is more stable, the handle is held by hands in the expansion process, the crank is rotated by the other hand, the upper supporting piece and the lower supporting piece can be kept stable, and discomfort and pain in the obstetric canal expansion process are effectively reduced.
The invention can extrude the force feedback plate through the inner wall of the birth canal in the process of the birth canal expansion, overcomes the defect that the judgment is carried out only by the hand feeling of a doctor in the prior art, can effectively prevent the injury of the birth canal caused by the excessive expansion of the birth canal, does not need to press by a palm in the expansion process, and effectively reduces the discomfort and the pain in the process of the birth canal expansion.
Drawings
Fig. 1 is a perspective view illustrating a disassembled structure of an upper support member and a lower support member according to the present invention;
FIG. 2 is a schematic view of a second ratchet connection structure according to the present invention;
FIG. 3 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 4 is a perspective view of the double-sided rack bar connection structure of the present invention;
FIG. 5 is a schematic plan view of a double-sided rack bar attachment configuration of the present invention;
FIG. 6 is a schematic perspective view of the lifter plate of the present invention;
FIG. 7 is a schematic view of a first ratchet connection structure according to the present invention.
In the figure: 1 upper supporting piece, 2 lower supporting pieces, 3 handles, 4 sliding bars, 5 lifting grooves, 6 lifting plates, 7 sliding grooves, 8 lifting racks, 9 lifting gears, 10 double-sided racks, 11 driving gears, 12 expansion cranks, 13 first ratchet wheels, 14 second ratchet wheels, 15 first wheel claws, 16 second wheel claws, 17 shifting pieces, 18 shifting grooves, 19 extrusion springs, 20 spring plates, 21 arc-shaped grooves, 22 push-pull rods, 23 first pistons, 24 first cylinder bodies, 25 traction springs, 26 hydraulic oil circuits, 27 second cylinder bodies, 28 second pistons, 29 force feedback plates, 30 expansion springs, 31 feedback plate grooves, 32 lifting sliding grooves and 33 lifting limiting blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
referring to fig. 1-7, the present invention provides a technical solution:
a self-locking type birth canal expanding device comprises an upper supporting piece 1 and a lower supporting piece 2 matched with the upper supporting piece 1, wherein the upper supporting piece 1 and the lower supporting piece 2 are of a duckbill shape, under a closed state, the upper supporting piece 1 and the lower supporting piece 2 are tightly matched, the device is sent into a birth canal by coating lubricating silica gel on the outer surfaces of the upper supporting piece 1 and the lower supporting piece 2, the tail end of the lower supporting piece 2 is fixedly connected with a handle 3, a pair of sliding strips 4 are fixedly arranged on two sides of the handle 3, a lifting groove 5 which penetrates through the inside and the outside is arranged on the handle 3 between the sliding strips 4 on the two sides, lifting plates 6 matched with the handle 3 are fixedly arranged on two sides of the tail end of the upper supporting piece 1, the upper supporting piece 1 is in sliding connection with the lower supporting piece 2 through the sliding fit of the lifting plates 6 on the two sides, sliding grooves 7 matched with the sliding strips 4 are arranged on the lifting plates 6 between the sliding grooves 7, lifting racks 8 are fixedly arranged on the lifting plates 6, the lifting racks 8 on two sides respectively extend into the handle 3 through the lifting grooves 5 on two sides, a pair of lifting gears 9 are movably arranged in the handle 3 through a rotating shaft, the lifting gears 9 on two sides are respectively meshed with the lifting racks 8, one ends of the lifting gears 9 on two sides, far away from the lifting racks 8, are respectively meshed with the same double-sided rack 10, one side of the double-sided rack 10 is also meshed with a driving gear 11, the driving gear 11 is fixedly arranged on the rotating shaft of an expansion crank 12, a first ratchet wheel 13 and a second ratchet wheel 14 are also fixedly arranged on the rotating shaft of the expansion crank 12, the first ratchet wheel 13 and the second ratchet wheel 14 are arranged in reverse directions, the first ratchet wheel 13 and the second ratchet wheel 14 are respectively movably matched with a first wheel claw 15 and a second wheel claw 16, the expansion crank 12 is rotated to drive the double-sided rack 10 to lift, the lifting gears 9 on two sides are driven to rotate, and the lifting gears 9 drive the lifting racks 8 to lift, thereby completing the lifting of the lifting plate 6 at the two sides of the handle 3, and driving the upper support member 1 to lift through the lifting of the lifting plate 6;
the first wheel claw 15 is movably arranged in the handle 3 through a rotating shaft, one end of the first wheel claw 15, far away from the first ratchet wheel 13, is fixedly connected with a shifting sheet 17, the shifting sheet 17 extends to the outside of the handle 3 through a shifting groove 18 formed in the side edge of the handle 3, the bottom of one side of the first wheel claw 15, far away from the first ratchet wheel 13, is fixedly provided with an extrusion spring 19, the extrusion spring 19 is fixedly arranged in the handle 3 through a spring plate 20, the expansion crank 12 rotates to drive the first ratchet wheel 13 to rotate, the first wheel claw 15 is matched with the first ratchet wheel 13 to prevent the reverse rotation of the first ratchet wheel 13, when the expansion crank 12 stops rotating, the upper support part 1 can keep an expansion state under the abutting of the first wheel claw 15, the extrusion spring 19 is used for keeping the first wheel claw 15 and the first ratchet wheel 13 in a matching state under the absence of external force, after the birth canal examination is finished, the shifting sheet 17 is shifted to separate the first wheel claw 15 from the first ratchet wheel 13, at this time, the expansion crank 12 is rotated reversely to reset the upper support 1;
the second wheel claw 16 is provided with an arc-shaped groove 21, a push-pull rod 22 is movably arranged in the arc-shaped groove 21, one end of the push-pull rod 22 far away from the second wheel claw 16 is fixedly connected to a first piston 23, the first piston 23 is positioned in a first cylinder body 24, the tail end of the first piston 23 is connected with the tail end of the first cylinder body 24 through a traction spring 25, the first cylinder body 24 is fixedly arranged in the handle 3, the first cylinder body 24 is communicated with a plurality of second cylinder bodies 27 through a hydraulic oil circuit 26, a plurality of second cylinder bodies 27 are respectively and movably provided with a second piston 28, one end of the second piston 28 far away from the hydraulic oil circuit 26 is fixedly connected with a force feedback plate 29 through a connecting rod, the tail parts of the second piston 28 and the second cylinder bodies 27 are respectively and fixedly connected through an expansion spring 30, the force feedback plate 29 is movably arranged in a feedback plate groove 31 arranged at the front end of the lower supporting piece 2, the traction spring 25 pulls the second piston 28 upwards under the effect of no external force, therefore, the second wheel claw 16 is separated from the second ratchet wheel 14, the force feedback plate 29 extends out of the feedback plate groove 31, when the force feedback plate 29 is extruded by the inner wall of the birth canal in the expansion process, the force feedback plate 29 overcomes the traction spring 25 and the expansion spring 30 to do work in the extrusion process, when the extrusion pressure pushes a plurality of second pistons 28 for a certain distance, the first piston 23 drives the push-pull rod 22 to move downwards under the action of the hydraulic oil circuit 26, the second wheel claw 16 is matched with the second ratchet wheel 14 due to extrusion of the push-pull rod 22 at the moment, the expansion crank 12 cannot rotate continuously, and therefore a self-locking state is achieved.
Preferably, the number of the second cylinders 27 is four, and four second cylinders 27 are uniformly installed on the hydraulic oil passage 26 at intervals.
As an optimization, the lifting chute 32 is formed in the side edge of the double-sided rack 10, the lifting limiting block 33 is movably arranged in the lifting chute 32, the lifting limiting block 33 is fixedly installed inside the handle 3, and the lifting stability of the double-sided rack 10 is guaranteed through the matching of the lifting chute 32 and the lifting limiting block 33.
The using method comprises the following steps:
the method comprises the following steps: coating lubricating silica gel on the outer surfaces of an upper supporting piece 1 and a lower supporting piece 2 of the device and then slightly pushing the device into a birth canal;
step two: one hand holds the handle 3, the other hand rotates the expansion crank 12, the expansion crank 12 rotates to drive the driving gear 11 to rotate, the driving gear 11 rotates to enable the double-sided rack 10 to move downwards, the double-sided rack 10 moves downwards to drive the lifting gear 9 to rotate, the lifting gear 9 rotates to drive the lifting plates 6 on two sides to lift, the lifting plates 6 lift to drive the upper supporting piece 1 to move upwards, and then the birth canal is expanded;
step three: when the upper supporting part 1 moves upwards, when the inner wall of the birth canal extrudes the force feedback plate 29 to a certain force, the force feedback plate 29 overcomes the action of the traction spring 25 and the expansion spring 30, a plurality of second pistons 28 are pushed upwards, the first piston 23 is extruded downwards under the action of the hydraulic oil circuit 26, when the first piston 23 extrudes and drives the push-pull rod 22 to push so that the second wheel claw 16 is matched with the second ratchet wheel 14, the device finishes self-locking at the moment, the expansion crank 12 cannot shake, and at the moment, medical operation is performed on the interior of the birth canal;
step four; after the medical operation is finished, the first wheel claw 15 is separated from the first ratchet wheel 13 by stirring the poking sheet 17, the upper supporting piece 1 is reset by reversely rotating the expansion crank 12, and the device is taken out of the birth canal when the upper supporting piece 1 is matched with the lower supporting piece 2.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a from locking-type birth canal expansion device, includes upper support piece (1) and rather than complex lower support piece (2), its characterized in that: the improved multifunctional lifting handle is characterized in that the upper supporting piece (1) and the lower supporting piece (2) are of a duckbill shape, the tail end of the lower supporting piece (2) is fixedly connected with a handle (3), a pair of sliding strips (4) are fixedly arranged on two sides of the handle (3), lifting grooves (5) which are penetrated through from inside to outside are formed in the handle (3) between the sliding strips (4), lifting plates (6) matched with the handle (3) are fixedly arranged on two sides of the tail end of the upper supporting piece (1), sliding grooves (7) matched with the sliding strips (4) are formed in the lifting plates (6) on two sides, lifting racks (8) on two sides are fixedly arranged on the lifting plates (6) between the sliding grooves (7) respectively and extend into the handle (3), and a pair of lifting gears (9) are movably arranged in the handle (3) through rotating shafts, the lifting gears (9) on two sides are respectively meshed with a lifting rack (8), one ends, far away from the lifting rack (8), of the lifting gears (9) on two sides are respectively meshed with the same double-sided rack (10), one side of the double-sided rack (10) is also meshed with a driving gear (11), the driving gear (11) is fixedly installed on a rotating shaft of an expansion crank (12), a first ratchet wheel (13) and a second ratchet wheel (14) are further fixedly installed on the rotating shaft of the expansion crank (12), the first ratchet wheel (13) and the second ratchet wheel (14) are arranged in a reverse direction, and the first ratchet wheel (13) and the second ratchet wheel (14) are respectively in movable fit with a first wheel claw (15) and a second wheel claw (16);
the first wheel claw (15) is movably arranged in the handle (3) through a rotating shaft, one end, far away from the first ratchet wheel (13), of the first wheel claw (15) is fixedly connected with a shifting sheet (17), the shifting sheet (17) extends to the outside of the handle (3) through a shifting groove (18) formed in the side edge of the handle (3), an extrusion spring (19) is fixedly arranged at the bottom of one side, far away from the first ratchet wheel (13), of the first wheel claw (15), and the extrusion spring (19) is fixedly arranged in the handle (3) through a spring plate (20);
an arc-shaped groove (21) is formed in the second wheel claw (16), a push-pull rod (22) is movably mounted in the arc-shaped groove (21), one end, far away from the second wheel claw (16), of the push-pull rod (22) is fixedly connected to a first piston (23), the first piston (23) is located inside a first cylinder body (24), the first piston (23) is connected with the tail end of the first cylinder body (24) through a traction spring (25), the first cylinder body (24) is fixedly mounted inside a handle (3), the first cylinder body (24) is communicated with a plurality of second cylinder bodies (27) through a hydraulic oil way (26), second pistons (28) are movably arranged in the second cylinder bodies (27), one ends, far away from the hydraulic oil way (26), of the second pistons (28) are fixedly connected with a force feedback plate (29) through connecting rods, and the tails of the second pistons (28) and the second cylinder bodies (27) are fixedly connected through expansion springs (30), the force feedback plate (29) is movably arranged in a feedback plate groove (31) formed in the front end of the lower support piece (2).
2. The self-locking birth canal dilator according to claim 1, wherein: the number of the second cylinder bodies (27) is four, and the four second cylinder bodies (27) are uniformly arranged on the hydraulic oil path (26) at intervals.
3. The self-locking birth canal dilator according to claim 1, wherein: lifting sliding grooves (32) are formed in the side edges of the double-sided racks (10), lifting limiting blocks (33) are movably arranged in the lifting sliding grooves (32), and the lifting limiting blocks (33) are fixedly installed inside the handle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011605883.0A CN112690841B (en) | 2020-12-30 | 2020-12-30 | Self-locking type birth canal expanding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011605883.0A CN112690841B (en) | 2020-12-30 | 2020-12-30 | Self-locking type birth canal expanding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112690841A CN112690841A (en) | 2021-04-23 |
| CN112690841B true CN112690841B (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011605883.0A Active CN112690841B (en) | 2020-12-30 | 2020-12-30 | Self-locking type birth canal expanding device |
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| CN (1) | CN112690841B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115500874B (en) * | 2022-11-10 | 2023-03-21 | 深圳市华晨阳科技有限公司 | Cervical cell extractor |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2488244B1 (en) * | 2009-10-13 | 2016-05-04 | Materna Medical, Inc. | Apparatus for preventing vaginal lacerations during childbirth |
| CN201658356U (en) * | 2009-12-24 | 2010-12-01 | 象山华美塑料制品有限公司 | Disposable vaginal dilator |
| US20130253376A1 (en) * | 2010-10-13 | 2013-09-26 | Mark Juravic | Method and apparatus for preventing vaginal lacerations during childbirth |
| CN205433643U (en) * | 2016-03-10 | 2016-08-10 | 徐海东 | Disposable gynaecology fluorescence expander |
| CN211749523U (en) * | 2019-03-04 | 2020-10-27 | 松桃苗族自治县人民医院 | Vaginal dilator for gynecological nursing |
| CN211324928U (en) * | 2019-07-31 | 2020-08-25 | 黄誉羚 | Multifunctional gynecological dilator |
| CN110464393A (en) * | 2019-09-04 | 2019-11-19 | 宋继旭 | A kind of department of general surgery's clinic wound extension fixture |
| CN211213086U (en) * | 2019-11-18 | 2020-08-11 | 辽宁省肿瘤医院 | Electronic gynaecology's speculum of lamella formula with force feedback function |
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2020
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Inventor after: Gao Lijuan Inventor after: Jiang Chun Inventor before: Jiang Chun |
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Effective date of registration: 20220125 Address after: 467000 yard 1, south middle section of miner's road, Xinhua District, Pingdingshan City, Henan Province Applicant after: PINGMEI SHENMA MEDICAL GROUP GENERAL Hospital Address before: 233004 the First Affiliated Hospital of Bengbu Medical College, 287 Changhuai Road, Longzihu District, Bengbu City, Anhui Province Applicant before: Jiang Chun |
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