CN109528275B - Cervical dilator with unilateral opening - Google Patents
Cervical dilator with unilateral opening Download PDFInfo
- Publication number
- CN109528275B CN109528275B CN201910053916.6A CN201910053916A CN109528275B CN 109528275 B CN109528275 B CN 109528275B CN 201910053916 A CN201910053916 A CN 201910053916A CN 109528275 B CN109528275 B CN 109528275B
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- inner core
- expansion
- rocker
- force application
- application point
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- 238000003825 pressing Methods 0.000 abstract description 15
- 230000006378 damage Effects 0.000 abstract description 7
- 208000027418 Wounds and injury Diseases 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 208000014674 injury Diseases 0.000 abstract description 4
- 210000003679 cervix uteri Anatomy 0.000 description 11
- 230000010339 dilation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000916 dilatatory effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
-
- 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
- A61B2017/4216—Operations on uterus, e.g. endometrium
- A61B2017/4225—Cervix uteri
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/14—Female reproductive, genital organs
- A61M2210/1433—Uterus
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Anesthesiology (AREA)
- Gynecology & Obstetrics (AREA)
- Pregnancy & Childbirth (AREA)
- Reproductive Health (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Hematology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a unilateral-spread cervical dilator which comprises a tube body, wherein an inner core is arranged in the tube body, an expansion bracket is arranged at the top of the tube body, an expansion head is arranged at the top of the expansion bracket, the bottom end of the tube body is arranged on a support, two sides of the bottom of the support are respectively hinged with a handle, each handle is provided with a pressing bar, the pressing bars on the two sides are symmetrically inclined and are hinged with the lower end of the inner core together, the upper end of the inner core is connected with the expansion bracket, the expansion bracket is a parallel double-rocker mechanism and consists of a driving rocker, a machine frame rod, a driven rocker and a side support connecting rod, the driving rocker is in a lever structure, the power arm is in a side hook structure with the bottom end of a resistance arm protruding downwards to the right, the stress point, the pivot point and the force application point are not in the same straight line, and the force application point and the upper end of the inner core are connected through a movable hinge. The expander has good expansion effect, and the cervical can be expanded by utilizing the side support connecting rod to expand the cervical unilaterally outwards, so that the cervical injury caused by common expansion is avoided.
Description
Technical Field
The invention relates to an expander, in particular to a unilateral-expansion cervical expander.
Background
The existing cervical dilator is various rod-type instruments with different thicknesses, and needs repeated operation for many times, so that the cervical with contractility is naturally dilated under external compression, which is very inconvenient; in addition, the rod type dilator is contacted and rubbed with the inner wall of the cervix for many times, so that the cervical injury is easily caused, and the dilation effect is poor. The utility model discloses a cervical dilator in patent number CN201410533294.4, including expansion head, expansion frame, inner core, connecting rod and both sides handle that interconnect in proper order, expansion head rear end be connected with the expansion frame, expansion head and expansion frame be circular hollow structure, the expansion frame includes upper portion fan-shaped face, lower part fan-shaped face and bilateral symmetry's expansion piece, the expansion effect of this expander is better, but the structure is complicated, manufacturing cost is high, this expander expands the cervical through the expansion piece of both sides moreover, structural rigidity is weak, damages easily.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides the cervical dilator with single-side opening, which has low cost and difficult structure damage.
The invention solves the technical problems by adopting the technical scheme that: the utility model provides a unilateral struts cervical expander, includes the body, is equipped with an inner core in the body, the body top is equipped with the expansion frame, and expansion frame top is equipped with the expansion head, the body bottom is installed on the support, and the support bottom both sides respectively articulate there is a handle, all is equipped with the layering on the handle, and both sides layering symmetry is to the slope and together articulated the lower extreme of inner core, and the expansion frame is connected to the inner core upper end, the expansion frame is parallel double rocker mechanism, comprises initiative rocker, frame pole, driven rocker and side support connecting rod, open at the body top has a notch, the right side fixed connection machine frame pole lower extreme above the notch, driven rocker upper end articulation expansion head lower part, the left side installation initiative rocker above the notch, the initiative rocker is lever structure, comprises stress point, resistance arm, fulcrum, power arm and force application point, the side hook structure that the resistance arm bottom is a lower bulge to the right side, stress point, fulcrum and force application point are not on same straight line, the power point is located the power end is connected at the power end in the notch and the inside the lower part of support connecting rod, the power point is located the power end is connected to the power end between the inside the notch and the power end in the side support connecting rod.
In order to further improve, an elastic rod is fixed at the upper end of the inner core, and the top of the elastic rod is hinged with a force application point of the driving rocker.
Further perfecting, a connecting rod is arranged between the force application point and the upper end of the inner core, and the upper end and the lower end of the connecting rod are respectively hinged with the force application point and the upper end of the inner core.
Further perfecting, the force application point is an inclined chute structure, a first rotating shaft is arranged in the inclined chute, and the first rotating shaft is fixed at the upper end of the inner core.
Further perfecting, the upper end of the inner core is provided with a transverse groove, a second rotating shaft is arranged in the transverse groove, and the second rotating shaft is fixed on the force application point.
Further perfecting, the sectional shapes of the resistance arm of the driving rocker, the machine frame rod, the driven rocker and the side support connecting rod are semicircular, the circular arc faces outwards, and the outer ring of the resistance arm of the driving rocker, the machine frame rod, the driven rocker and the side support connecting rod are folded together and the outer ring of the pipe body are on the same cambered surface.
Further perfecting, the expansion head is of a hemispherical structure, and the diameter of the expansion head is smaller than or equal to the outer diameter of the expansion frame. Does not cause cervical injury
Further perfecting, the outer sides of the bottoms of the handles on both sides are provided with a finger ring, and the bottoms of the finger rings on the left side are provided with auxiliary rods. The finger ring can facilitate the finger to operate the handle.
Further perfecting, the inner sides of the bottom of the handle at both sides are provided with clamping hooks. The clamping hook can be buckled when the handles are closed, and is loosened when the handles are staggered.
The beneficial effects of the invention are as follows: the expander has good expansion effect, the use method is similar to that of common pliers and scissors, the expander is convenient to use, the principle of a parallel double-rocker mechanism is adopted, the inner core and the expander are matched, the lever structure of the driving rocker is utilized to enable the side support connecting rod to open the cervical outside unilaterally, the cervical injury caused by common expansion is avoided, the structural rigidity is good, the expander is not easy to damage, the structure is simple and practical, and the expander is easy to retract and release.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the handle of the present invention when it is retracted;
FIG. 3 is a schematic structural diagram of embodiment 1;
FIG. 4 is a schematic view of the structure of the direction A in FIG. 3;
FIG. 5 is a schematic structural diagram of embodiment 2;
FIG. 6 is a schematic structural diagram of embodiment 3;
FIG. 7 is a schematic view of the structure of embodiment 4;
reference numerals illustrate: 1. expansion head, 2, expansion frame, 3, body, 4, inner core, 5, support, 6, handle, 7, layering, 8, side stay connecting rod, 9, initiative rocker, 10, frame pole, 11, driven rocker, 12, notch, 13, stress point, 14, resistance arm, 15, fulcrum, 16, power arm, 17, force application point, 18, connecting rod, 19, trip, 20, ring, 21, auxiliary rod, 22, elastic rod, 23, chute, 24, first pivot, 25, transverse groove, 26, second pivot.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
Referring to the drawings: the single-side-spread cervical dilator comprises a tube body 3, an inner core 4 is arranged in the tube body 3, an expansion frame 2 is arranged at the top of the tube body 3, an expansion head 1 is arranged at the top of the expansion frame 2, the bottom end of the tube body 3 is arranged on a support 5, two sides of the bottom of the support 5 are respectively hinged with a handle 6, the handles 6 are respectively provided with a pressing strip 7, the pressing strips 7 on the two sides are symmetrically inclined and are hinged with the lower end of the inner core 4 together, the upper end of the inner core 4 is connected with the expansion frame 2, the expansion frame 2 is a parallel double-rocker mechanism and consists of a driving rocker 9, a frame rod 10, a driven rocker 11 and a side support connecting rod 8, a notch 12 is formed at the top of the tube body 3, the right half of the notch 12 is fixedly connected with the lower end of the frame rod 10, the upper end of the frame rod 10 is hinged with the lower end of the driven rocker 11, the upper end of the driven rocker 11 is hinged with the right half part below the expansion head 1, the left side of notch 12 installs initiative rocker 9, initiative rocker 9 is lever construction, comprises stress point 13, resistance arm 14, fulcrum 15, power arm 16 and force application point 17, power arm 16 is the side hook structure that the bottom of a resistance arm 14 is protruding downwards to the right, stress point 13, fulcrum 15 and force application point 17 are not on the same straight line, stress point 13 of resistance arm 14 upper end articulates side brace connecting rod 8 lower extreme, side brace connecting rod 8 upper end fixed connection expansion head 1 bottom left half, power arm 16 is located notch 12 inside, and the force application point 17 on the power arm 16 is located notch 12 middle right part, the fulcrum 15 between power arm 16 and the resistance arm 14 articulates in notch inner left part, connect through movable hinge between force application point 17 and the inner core 4 upper end. The hinging point of the lower ends of the pressing strip 7 and the inner core 4 is positioned between the hinging point of the pressing strip 7 and the handle 6 and the hinging point of the handle 6 and the support 5.
Example 1: an elastic rod 22 is fixed at the upper end of the inner core 4, and the top of the elastic rod 22 is hinged with a force application point 17 of the driving rocker 9. When the cervical dilator is used, firstly, the handle 6 is in a separated state, the dilator 2 is in a closed state, and when the dilator is inserted into the cervical, the cervical is not damaged due to the fact that the front end of the dilator 2 is provided with the dilating head 1, and one-time dilation of Gong Gengdi is realized. When the expansion bracket 2 is positioned outside the inner wall of the cervix, the hand applies the pressure handle 6, the handle 6 is folded, the pressing bar 7 is tightened, the inner core 4 is pushed forwards, when the inner core 4 is pushed forwards, the elastic rod 22 bends and transmits force to the force application point 17 of the power arm 16, the driving rocker 9 rotates around the fulcrum 15, the resistance arm 14 is opened, the driving rocker 9 and the driven rocker 11 swing relative to the frame rod 10 to drive the side support connecting rod 8 to open unilaterally, and the force of the side support connecting rod 8 is relaxed to realize the second expansion of the cervix because the inner wall of the cervix is soft and expandable, when the expander is required to be retracted, the handle 6 is separated, the pressing bar 7 drives the inner core 4 to be pulled out, the expansion bracket 2 is retracted, and then the expansion head 1 and the expansion bracket 2 are pulled out, so that the cervix is reset.
Example 2: a connecting rod 18 is arranged between the force application point 17 and the upper end of the inner core 4, and the upper end and the lower end of the connecting rod 18 are respectively hinged with the force application point 17 and the upper end of the inner core 4. When the cervical dilator is used, firstly, the handle 6 is in a separated state, the dilator 2 is in a closed state, and when the dilator is inserted into the cervical, the cervical is not damaged due to the fact that the front end of the dilator 2 is provided with the dilating head 1, and one-time dilation of Gong Gengdi is realized. When the expansion bracket 2 is positioned on the outer side of the cervical inner wall, the hand is applied to press the handle 6, the handle 6 is folded, the pressing bar 7 is tightened, the inner core 4 is pushed forwards, when the inner core 4 is pushed forwards, the connecting rod 18 deflects rightwards and transmits force to the force application point 17 of the power arm 16, the driving rocker 9 rotates around the supporting point 15, the resistance arm 14 is opened, the driving rocker 9 and the driven rocker 11 swing relative to the frame rod 10 to drive the side support connecting rod 8 to open unilaterally, and the force of the side support connecting rod 8 is relaxed to realize the second expansion of the cervical, when the expander is required to be retracted, the handle 6 is separated, the pressing bar 7 drives the inner core 4 to be pulled out, so that the expansion bracket 2 is retracted, and then the expansion head 1 and the expansion bracket 2 are pulled out, so that the cervical is reset.
Example 3: the force application point 17 is a structure of an inclined chute 23, a first rotating shaft 24 is arranged in the inclined chute 23, and the first rotating shaft 24 is fixed at the upper end of the inner core 4. When the cervical dilator is used, firstly, the handle 6 is in a separated state, the dilator 2 is in a closed state, and when the dilator is inserted into the cervical, the cervical is not damaged due to the fact that the front end of the dilator 2 is provided with the dilating head 1, and one-time dilation of Gong Gengdi is realized. When the expansion bracket 2 is positioned outside the inner wall of the cervix, the hand applies the pressing handle 6, the handle 6 is folded, the pressing strip 7 is tightened, the inner core 4 is pushed forward, when the inner core 4 is pushed forward, the first rotating shaft 24 moves forward and slides in the inclined sliding groove 23, the force is transmitted to the power arm 16, the driving rocker 9 rotates around the supporting point 15, the resistance arm 14 is opened, the driving rocker 9 and the driven rocker 11 swing relative to the frame rod 10 to drive the side support connecting rod 8 to open unilaterally, the force of the side support connecting rod 8 is received to be relaxed due to the soft and expandable inner wall of the cervix, when the expander is required to be withdrawn for the second time, the handle 6 is separated, the pressing strip 7 drives the inner core 4 to be pulled out, the expansion bracket 2 is retracted, and then the expansion head 1 and the expansion bracket 2 are pulled out, so that the cervix is reset.
Example 3: the upper end of the inner core 4 is provided with a transverse groove 25, a second rotating shaft 26 is arranged in the transverse groove 25, and the second rotating shaft 26 is fixed on the force application point 17. When the cervical dilator is used, firstly, the handle 6 is in a separated state, the dilator 2 is in a closed state, and when the dilator is inserted into the cervical, the cervical is not damaged due to the fact that the front end of the dilator 2 is provided with the dilating head 1, and one-time dilation of Gong Gengdi is realized. When the expansion bracket 2 is positioned outside the inner wall of the cervix, the hand is applied to press the handle 6, the handle 6 is folded, the pressing bar 7 is tightened, the inner core 4 is pushed forwards, when the inner core 4 is pushed forwards, the second rotating shaft 26 moves leftwards in the transverse groove 25 and transmits force to the power arm 16, the driving rocker 9 rotates around the fulcrum 15, the resistance arm 14 is opened, the driving rocker 9 and the driven rocker 11 swing relative to the frame rod 10 due to the fact that the expansion bracket 2 is a parallel double-rocker mechanism, the side support connecting rod 8 is driven to open unilaterally, the force of the side support connecting rod 8 is received to be relaxed due to the fact that the inner wall of the cervix is soft and can be expanded, when the expander is required to be withdrawn for the second time, the handle 6 is separated, the pressing bar 7 drives the inner core 4 to be pulled out, the expansion bracket 2 is retracted, and then the expansion head 1 and the expansion bracket 2 are pulled out, so that the cervix is reset.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the invention.
Claims (5)
1. The utility model provides a unilateral cervical dilator who struts, includes body (3), is equipped with an inner core (4) in body (3), body (3) top is equipped with expansion frame (2), and expansion frame (2) top is equipped with expansion head (1), body (3) bottom is installed on support (5), and support (5) bottom both sides respectively articulate has a handle (6), all are equipped with layering (7) on handle (6), and both sides layering (7) symmetry is to the slope and together articulate the lower extreme of inner core (4), and expansion frame (2) are connected to inner core (4) upper end, characterized by: the expansion bracket (2) is a parallel double-rocker mechanism and consists of a driving rocker (9), a frame rod (10), a driven rocker (11) and a side supporting connecting rod (8), a notch (12) is formed in the top of the pipe body (3), the right half of the upper surface of the notch (12) is fixedly connected with the lower end of the frame rod (10), the upper end of the frame rod (10) is hinged with the lower end of the driven rocker (11), the upper end of the driven rocker (11) is hinged with the right half part below an expansion head (1), the driving rocker (9) is arranged on the left half side above the notch (12), the driving rocker (9) is in a lever structure and consists of a stress point (13), a resistance arm (14), a fulcrum (15), a power arm (16) and a force application point (17), the bottom end of the power arm (16) is in a side hooking structure with the bottom end of the resistance arm (14) protruding downwards to the right, the stress point (13), the fulcrum (15) and the force application point (17) are not on the same straight line, the stress point (13) at the upper end of the resistance arm (14) is hinged with the lower end of the side supporting rod (8), the power arm (8) at the lower end of the upper end of the stress arm (12) is positioned in the right half part (16) and the lower end of the power arm (16) is positioned in the lower end of the expansion arm (12), a fulcrum (15) between the power arm (16) and the resistance arm (14) is hinged at the left part in the notch, and the force application point (17) is connected with the upper end of the inner core (4) through a movable hinge;
The section shapes of the resistance arm (14), the frame rod (10), the driven rocker (11) and the side support connecting rod (8) of the driving rocker (9) are semicircular, the circular arc faces outwards, and the outer ring of the resistance arm (14), the frame rod (10), the driven rocker (11) and the side support connecting rod (8) which are folded together and the outer ring of the pipe body (3) are on the same cambered surface;
the expansion head (1) is of a hemispherical structure, and the diameter of the expansion head (1) is smaller than or equal to the outer diameter of the expansion frame (2);
The outer sides of the bottoms of the handles (6) at both sides are provided with a finger ring (20), and the bottoms of the finger rings (20) at the left side are provided with auxiliary rods (21);
the inner side of the bottom of the handle (6) at both sides is provided with a clamping hook (19).
2. A unilateral-spread cervical dilator according to claim 1 and characterized in that: an elastic rod (22) is fixed at the upper end of the inner core (4), and the top of the elastic rod (22) is hinged with a force application point (17) of the driving rocker (9).
3. A unilateral-spread cervical dilator according to claim 1 and characterized in that: a connecting rod (18) is arranged between the force application point (17) and the upper end of the inner core (4), and the upper end and the lower end of the connecting rod (18) are respectively hinged with the force application point (17) and the upper end of the inner core (4).
4. A unilateral-spread cervical dilator according to claim 1 and characterized in that: the force application point (17) is of a structure of an inclined chute (23), a first rotating shaft (24) is arranged in the inclined chute (23), and the first rotating shaft (24) is fixed at the upper end of the inner core (4).
5. A unilateral-spread cervical dilator according to claim 1 and characterized in that: the upper end of the inner core (4) is provided with a transverse groove (25), a second rotating shaft (26) is arranged in the transverse groove (25), and the second rotating shaft (26) is fixed on the force application point (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910053916.6A CN109528275B (en) | 2019-01-21 | 2019-01-21 | Cervical dilator with unilateral opening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910053916.6A CN109528275B (en) | 2019-01-21 | 2019-01-21 | Cervical dilator with unilateral opening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109528275A CN109528275A (en) | 2019-03-29 |
| CN109528275B true CN109528275B (en) | 2024-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910053916.6A Active CN109528275B (en) | 2019-01-21 | 2019-01-21 | Cervical dilator with unilateral opening |
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| Country | Link |
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| CN (1) | CN109528275B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113040841B (en) * | 2021-03-15 | 2023-06-06 | 北京华腾创新科技有限公司 | Retractor system for surgical operation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209734100U (en) * | 2019-01-21 | 2019-12-06 | 丽水市人民医院 | Single-side-opening cervical dilator |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2844175A1 (en) * | 1978-07-07 | 1980-01-17 | Us Health | CERVICAL DILATATOR |
| CN2038401U (en) * | 1988-08-30 | 1989-05-31 | 江山 | Cervix dilatator |
| CN104257418B (en) * | 2014-10-11 | 2016-06-29 | 丽水市人民医院 | Cervical dilator |
-
2019
- 2019-01-21 CN CN201910053916.6A patent/CN109528275B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209734100U (en) * | 2019-01-21 | 2019-12-06 | 丽水市人民医院 | Single-side-opening cervical dilator |
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| CN109528275A (en) | 2019-03-29 |
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