CN109549693B - Telescopic cervical dilation rod and use method thereof - Google Patents
Telescopic cervical dilation rod and use method thereof Download PDFInfo
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- CN109549693B CN109549693B CN201811159604.5A CN201811159604A CN109549693B CN 109549693 B CN109549693 B CN 109549693B CN 201811159604 A CN201811159604 A CN 201811159604A CN 109549693 B CN109549693 B CN 109549693B
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- expansion rod
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- 238000000034 method Methods 0.000 title description 14
- 230000010339 dilation Effects 0.000 title description 8
- 230000000916 dilatatory effect Effects 0.000 claims description 73
- 210000003679 cervix uteri Anatomy 0.000 claims description 33
- 230000008602 contraction Effects 0.000 claims description 4
- 208000015181 infectious disease Diseases 0.000 abstract description 7
- 238000003780 insertion Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 7
- 238000001356 surgical procedure Methods 0.000 description 3
- 206010067484 Adverse reaction Diseases 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 2
- 230000006838 adverse reaction Effects 0.000 description 2
- 208000026935 allergic disease Diseases 0.000 description 2
- 230000007815 allergy Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 206010033372 Pain and discomfort Diseases 0.000 description 1
- 206010000210 abortion Diseases 0.000 description 1
- 231100000176 abortion Toxicity 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035935 pregnancy Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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
- A61B17/42—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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (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)
- Surgical Instruments (AREA)
Abstract
The invention discloses a telescopic cervical dilator, which comprises a central dilator, a first-stage dilator sleeved on the central dilator and moving relative to the central dilator, a second-stage dilator sleeved on the first-stage dilator and moving relative to the first-stage dilator, and a third-stage dilator sleeved on the second-stage dilator and moving relative to the second-stage dilator, wherein the central dilator, the first-stage dilator, the second-stage dilator and the third-stage dilator are coaxially arranged and have sequentially increasing diameters. The invention has simple operation and little pain to the patient, and greatly reduces the risk of cervical infection.
Description
Technical Field
The invention relates to a cervical dilation technology, in particular to a telescopic cervical dilation rod and a using method thereof.
Background
Cervical dilatation is a necessary step of gynecological abortion surgery (the current main means for stopping unplanned pregnancy), placement or removal of an intrauterine device, and gynecological surgery requiring cervical dilatation before surgery. Cervical dilating rods are currently the primary instruments used for cervical dilation. When the cervix uteri is dilated, cervix uteri dilating rods with different diameters (phi 4.0mm, phi 5.0 mm, phi 6.0 mm and phi 7.0 mm) are inserted into the cervix uteri from small to large to dilate. The disadvantages of this expansion method are: the operation process is more tedious, and in the process of expansion, a plurality of metal expansion rods with different diameters need to be inserted into the cervix in sequence, and the cervix part is easy to cause adverse reactions such as infection, allergy, pain and discomfort and the like in the process of expansion.
Such as: chinese patent publication No. CN201005766, the name of utility model is a cervical dilating stick, its structure includes handle and dilating stick, is provided with hollow connecting pipe between handle and the dilating stick, is provided with dynamics response data processor in the connecting pipe, is provided with digital display screen directly over the connecting pipe. The utility model discloses an operation process is comparatively loaded down with trivial details when using, and at the expansion in-process, needs to insert the cervix uteri dilating stick of a plurality of different diameter specifications in proper order, and the cervical position takes place adverse reactions such as infection, allergy, painful discomfort easily in the expansion process.
Disclosure of Invention
The invention aims to solve the problems that when a traditional cervical dilating rod is used for dilating a cervix, a plurality of cervical dilating rods with different diameters need to be sequentially inserted into the cervix for dilating, and infection is easy to occur to the cervix in the dilating process.
The purpose of the invention is realized by the following technical scheme: the utility model provides a telescopic cervical dilating stick, includes central dilating stick, cup joints on central dilating stick with central dilating stick relative movement's one-level dilating stick, cup joints on the one-level dilating stick with one-level dilating stick relative movement's second grade dilating stick and cup joints on the second grade dilating stick with second grade dilating stick relative movement's tertiary dilating stick, central dilating stick, one-level dilating stick, second grade dilating stick and tertiary dilating stick coaxial arrangement and diameter increase gradually in proper order.
The first-stage dilating rod, the second-stage dilating rod and the third-stage dilating rod are respectively sleeved on the central dilating rod, when the cervical dilator is used, the central dilating rod is inserted into the cervix for dilation, after the central dilating rod is dilated, the central dilating rod is moved to retract the central dilating rod, and the first-stage dilating rod is inserted into the cervix for dilation; after the one-level expansion stick expansion is accomplished, remove the one-level expansion stick and retract the one-level expansion stick, insert the cervix with the second grade expansion stick and expand, after the expansion of second grade expansion stick is accomplished, remove the second grade expansion stick and retract the second grade expansion stick, insert the cervix expansion with tertiary expansion stick simultaneously. The cervix uteri can be gradually dilated due to the gradually increasing diameters of the central, primary, secondary and tertiary dilating rods. The traditional cervical dilating rods need to be inserted into and pulled out of the cervix sequentially, so that the operation is complex, great pain is caused to patients, and cervical infection is easily caused by the sequential insertion of a plurality of cervical dilating rods into the cervix; in the operation process, the cervical dilating rods with other specifications do not need to be replaced in the middle, so that the repeated insertion and extraction of different cervical dilating rods are avoided, the operation is simple, the pain is small, and the risk of cervical infection is greatly reduced.
Preferably, the front end of the central expansion rod is higher than the front end of the first-stage expansion rod, the front end of the first-stage expansion rod is higher than the front end of the second-stage expansion rod, and the front end of the second-stage expansion rod is higher than the front end of the third-stage expansion rod.
Preferably, the central expansion rod is of a circular rod-shaped structure, and the primary expansion rod, the secondary expansion rod and the tertiary expansion rod are all of cylindrical structures.
Preferably, the outer diameter of the central expansion rod is 4-5 mm, the outer diameter of the primary expansion rod is 1-1.5 mm larger than that of the central expansion rod, the outer diameter of the secondary expansion rod is 1-1.5 mm larger than that of the primary expansion rod, and the outer diameter of the tertiary expansion rod is 1-1.5 mm larger than that of the secondary expansion rod.
Preferably, the central expansion rod is provided with a first pulling bolt, the primary expansion rod is provided with a first sliding groove and a second pulling bolt, the secondary expansion rod is provided with a second sliding groove and a third pulling bolt, the tertiary expansion rod is provided with a third sliding groove, the first pulling bolt is located in the first sliding groove, the second pulling bolt is located in the second sliding groove, and the third pulling bolt is located in the third sliding groove.
Preferably, the first sliding groove comprises a linear groove in the middle, a front positioning groove at the front end of the linear groove and a rear positioning groove at the rear end of the linear groove, the widths of the front positioning groove and the rear positioning groove are larger than those of the linear groove, and the second sliding groove and the third sliding groove have the same structure as the first sliding groove.
Preferably, the first sliding groove, the second sliding groove and the third sliding groove are all arranged along the axial direction of the central expansion rod.
Preferably, the first pulling bolt comprises a connecting rod with a circular cross section, a cylindrical pulling bolt head is arranged at the end part of the connecting rod, and the second pulling bolt and the third pulling bolt have the same structure as the first pulling bolt.
A using method of the telescopic cervical dilating rod comprises the following specific steps:
1) preparing equipment, respectively pulling the first pulling bolt, the second pulling bolt and the third pulling bolt into front positioning grooves on the first sliding groove, the second sliding groove and the third sliding groove to enable the device to be in an extension state, and sterilizing the device;
2) inserting the front end of the central dilating rod into the cervix to dilate the cervix;
3) the first pulling bolt is pulled to the rear positioning groove on the first sliding groove, and the front end of the first-stage expansion rod is inserted into the cervix;
4) the second pulling bolt is pulled to the rear positioning groove on the second sliding groove, and the front end of the secondary expansion rod is inserted into the cervix;
5) pulling the third pulling bolt to a rear positioning groove on the third sliding groove, and simultaneously inserting the front end of the third-stage expansion rod into the cervix;
6) the present invention is pulled out of the cervix and sterilized.
Preferably, in the step 2), the front end of the central dilating rod is inserted into the cervix to a depth of 40-50 mm, in the step 3), the front end of the primary dilating rod is inserted into the cervix to a depth of 40-50 mm, in the step 4), the front end of the secondary dilating rod is inserted into the cervix to a depth of 40-50 mm, and in the step 5), the front end of the tertiary dilating rod is inserted into the cervix to a depth of 40-50 mm.
The invention has the beneficial effects that: according to the invention, the first-stage dilating rod, the second-stage dilating rod and the third-stage dilating rod are respectively sleeved on the central dilating rod, so that cervical dilating rods of other specifications are not required to be replaced during operation, repeated insertion and extraction of different cervical dilating rods are avoided, the operation is simple, the pain is small, and the risk of cervical infection is greatly reduced.
Drawings
FIG. 1 is an isometric view of the present invention.
Fig. 2 is an enlarged view of fig. 1 at I.
Fig. 3 is a side view of the present invention.
Fig. 4 is a sectional view taken along the direction a in fig. 3.
Fig. 5 is an enlarged view of fig. 4 at II.
Fig. 6 is a schematic view of a central spreader bar configuration.
FIG. 7 is a schematic view of a primary expansion rod configuration.
Fig. 8 is a schematic view of a two-stage dilating rod.
Fig. 9 is a structural diagram of the three-stage upper expansion rod.
In the figure: 1. the expansion rod comprises a central expansion rod, 2, a first-stage expansion rod, 3, a second-stage expansion rod, 4, a third-stage expansion rod, 5, a first pulling bolt, 6, a second pulling bolt, 7, a third pulling bolt, 8, a first sliding groove, 9, a second sliding groove, 10 and a third sliding groove.
Detailed Description
The invention is further described by the following detailed description in conjunction with the accompanying drawings. In the description, the cervical direction of insertion of the present invention is defined as "anterior", and the opposite direction is defined as "posterior".
As shown in fig. 1 and 9, a telescopic cervical dilator bar includes a central dilator bar 1, a primary dilator bar 2, a secondary dilator bar 3, and a fourth dilator bar 4. The central expansion rod 1, the primary expansion rod 2, the secondary expansion rod 3 and the fourth expansion rod 4 are all made of stainless steel. The central expansion rod 1 is of a circular rod-shaped structure. The diameter of the central expansion rod is 4-5 mm. The front end of the central expansion rod 1 is arc-shaped. The side surface of the rear end of the central expanding rod 1 is provided with a first pulling bolt 5. The first pulling bolt 5 comprises a rod body, one end of which is connected with the side surface of the expansion rod 1. The cross section of the rod body is circular. The rod body is perpendicular to the axis of the central expansion rod 1. The end part of the rod body is provided with a pulling bolt head. The bolt pulling head is a cylinder, and the diameter of the bolt pulling head is larger than that of the rod body.
The primary expansion rod 2 is of a cylindrical structure. The primary expansion rod is sleeved on the central expansion rod 1. The central expansion rod 1 and the primary expansion rod 2 are coaxially arranged. The central expansion rod 1 is in clearance fit with the first-stage expansion rod. The length of the primary expansion rod 2 is smaller than that of the central expansion rod 1. The outer diameter of the primary expansion rod 2 is 1-1.5 mm larger than the diameter of the central expansion rod 1. The central expansion rod 1 and the primary expansion rod 2 can move relatively along the axial direction. The front end of the first-stage expansion rod 2 is provided with a circular arc-shaped chamfer so that the front end of the first-stage expansion rod and the central expansion rod are in circular arc transition. The side surface of the primary expansion rod is provided with a first sliding chute 8 and a second pulling bolt 6. The second pulling bolt 6 has the same structure as the first pulling bolt 5. The first sliding groove 8 is arranged behind the second pulling bolt 6. The middle part of the first sliding chute 5 is a linear chute. The linear groove is arranged along the axial direction of the primary expansion rod. The front end of the linear groove is provided with a front positioning groove, and the rear end of the linear groove is provided with a rear positioning groove.
The groove width of the front positioning groove and the rear positioning groove is larger than that of the linear groove. The first pulling bolt 5 is connected in the first sliding groove 8 and can move along the first sliding groove 8.
The secondary expansion rod 3 is of a cylindrical structure. The secondary expansion rod 3 is sleeved on the primary expansion rod 2. The second-stage expansion rod 3 and the first-stage expansion rod 2 are coaxially arranged. And the secondary expansion rod is in clearance fit with the primary expansion rod. The length of the secondary expansion rod 3 is less than that of the primary expansion rod 2. The outer diameter of the secondary expansion rod is 1-1.5 mm larger than that of the primary expansion rod. The secondary expansion rod and the primary expansion rod can move relatively along the axial direction. And a third pulling bolt 7 and a second sliding groove 9 are arranged on the second-stage expansion rod. The third pulling bolt and the first pulling bolt have the same structure. The second sliding chute 9 has the same structure as the first sliding chute 8. The second pulling bolt 6 is connected in the second sliding groove 9 and can move along the direction of the second sliding groove.
The three-stage expansion rod 4 is of a cylindrical structure. The third-stage expansion rod 4 is sleeved on the second-stage expansion rod 3. The third-stage expansion rod 4 and the second-stage expansion rod 3 are coaxially arranged. The third-stage expansion rod 4 is in clearance fit with the second-stage expansion rod 3. The length of the third-stage expansion rod 4 is smaller than that of the second-stage expansion rod 3. The outer diameter of the third-stage expansion rod is 1-1.5 mm larger than that of the second-stage expansion rod. And a third sliding groove 10 is arranged on the third-stage expansion rod 4. The third sliding chute 10 has the same structure as the first sliding chute 8. The third pulling bolt 7 is connected in the third sliding groove 10 and can move along the direction of the third sliding groove.
The central expansion rod, the primary expansion rod and the secondary expansion rod are respectively controlled to move by pulling the first pulling bolt, the second pulling bolt and the third pulling bolt. And the front positioning groove and the rear positioning groove on the first sliding groove, the second sliding groove and the third sliding groove are used for fixing the position of the first pulling bolt, the second pulling bolt or the third pulling bolt. When the first pulling bolt is clamped into the front positioning groove on the first sliding groove, the central expansion rod and the first-stage expansion rod are in an extension state, and the front end of the central expansion rod extends out of the front end of the first-stage expansion rod by 50-60 mm. When the first pulling bolt is clamped into the rear positioning groove on the first sliding groove, the central expansion rod and the first-stage expansion rod are in a contraction state, and the front end of the central expansion rod extends out of the front end of the first-stage expansion rod by 5-10 mm. When the second pulling bolt is clamped into the front positioning groove on the second sliding groove, the first-stage expansion rod and the second-stage expansion rod are in a stretching state, and the front end of the first-stage expansion rod extends out of the front end of the second-stage expansion rod by 50-60 mm; when the second pulling bolt is clamped into the rear positioning groove on the second sliding groove, the first-stage expansion rod and the second-stage expansion rod are in a contraction state, and the front end of the first-stage expansion rod extends out of the front end of the second-stage expansion rod by 5-10 mm. When the third pulling bolt is clamped into the front positioning groove on the third sliding groove, the second-stage expansion rod and the third-stage expansion rod are in a stretching state, and the front end of the second-stage expansion rod extends out of the front end of the third-stage expansion rod by 50-60 mm; when the third pulling bolt is clamped into the rear positioning groove on the third sliding groove, the second-stage expansion rod and the third-stage expansion rod are in a contraction state, and the front end of the second-stage expansion rod extends out of the front end of the third-stage expansion rod by 5-10 mm.
When the cervical dilator is used for cervical dilatation, the method comprises the following specific steps: 1) preparing equipment, pulling the first pulling bolt, the second pulling bolt and the third pulling bolt, respectively pulling the first pulling bolt, the second pulling bolt and the third pulling bolt into front positioning grooves on the first sliding groove, the second sliding groove and the third sliding groove, so that the multifunctional medical instrument is in a stretching state, and sterilizing the multifunctional medical instrument; 2) inserting the front end of the central dilating rod into the cervix uteri for cervical dilation, wherein the depth of the front end of the central dilating rod inserted into the cervix uteri is 40-50 mm; 3) pulling the first pulling bolt to a rear positioning groove on the first sliding groove, and simultaneously inserting the front end of the first-stage expansion rod into the cervix, wherein the insertion depth is 40-50 mm, and the expansion time is 15-30 seconds; 4) pulling the second pulling bolt to a rear positioning groove on the second sliding groove, and simultaneously inserting the front end of the secondary expansion rod into the cervix, wherein the insertion depth is 40-50 mm, and the expansion time is 15-30 seconds; 5) and pulling the third pulling bolt to a rear positioning groove on the third sliding groove, and simultaneously inserting the front end of the third-stage dilating rod into the cervix, wherein the insertion depth is 40-50 mm. The expansion time is 15-30 seconds; 6) the present invention is pulled out of the cervix and sterilized.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. A telescopic cervical dilating rod is characterized in that: the device comprises a central expansion rod (1), a first-stage expansion rod (2) sleeved on the central expansion rod (1) and moving relative to the central expansion rod (1), a second-stage expansion rod (3) sleeved on the first-stage expansion rod (2) and moving relative to the first-stage expansion rod (2), and a third-stage expansion rod (4) sleeved on the second-stage expansion rod (3) and moving relative to the second-stage expansion rod (3), wherein the central expansion rod (1), the first-stage expansion rod (2), the second-stage expansion rod (3) and the third-stage expansion rod (4) are coaxially arranged, and the diameters of the central expansion rod, the first-stage expansion rod and the second-stage expansion rod are sequentially increased; when the telescopic expansion rod is in a contraction state, the front end of the central expansion rod (1) is higher than the front end of the first-stage expansion rod (2), the front end of the first-stage expansion rod (2) is higher than the front end of the second-stage expansion rod (3), and the front end of the second-stage expansion rod (3) is higher than the front end of the third-stage expansion rod (4); a first pulling bolt (5) is arranged at the rear end of the central expansion rod (1), a first sliding groove (8) and a second pulling bolt (6) are arranged on the first-stage expansion rod (2), a second sliding groove (9) and a third pulling bolt (7) are arranged on the second-stage expansion rod (3), a third sliding groove (10) is arranged on the third-stage expansion rod (4), the first pulling bolt (5) is positioned in the first sliding groove (8), the second pulling bolt (6) is positioned in the second sliding groove (9), and the third pulling bolt (7) is positioned in the third sliding groove (10); the first sliding groove (8) comprises a linear groove in the middle, a front positioning groove at the front end of the linear groove and a rear positioning groove at the rear end of the linear groove, the groove widths of the front positioning groove and the rear positioning groove are larger than those of the linear groove, and the second sliding groove (9) and the third sliding groove (10) are the same as the first sliding groove (8);
after the expansion of the front-stage expansion rod is finished, the pulling bolt is moved, part of the pulling bolt is contracted into the rear-stage expansion rod, and the rear-stage expansion rod is inserted into the cervix for expansion;
the linear groove and the rear positioning groove positioned at the rear end of the linear groove are arranged in an L shape.
2. The telescopic cervical dilating rod according to claim 1, wherein the central dilating rod (1) has a circular rod-shaped structure, and the primary dilating rod (2), the secondary dilating rod (3) and the tertiary dilating rod (4) have a cylindrical structure.
3. The telescopic cervical dilating rod according to claim 2, wherein the outer diameter of the central dilating rod (1) is 4-5 mm, the outer diameter of the primary dilating rod (2) is 1-1.5 mm larger than the outer diameter of the central dilating rod, the outer diameter of the secondary dilating rod (3) is 1-1.5 mm larger than the outer diameter of the primary dilating rod (2), and the outer diameter of the tertiary dilating rod (4) is 1-1.5 mm larger than the outer diameter of the secondary dilating rod (3).
4. A telescopic cervical dilating rod according to claim 1, characterized in that the first runner (8), the second runner (9) and the third runner (10) are all arranged along the axial direction of the central dilating rod (1).
5. The telescopic cervical dilating rod of claim 1, wherein the first pulling plug (5) comprises a connecting rod with a circular cross section, the end of the connecting rod is provided with a cylindrical pulling plug head, and the second pulling plug (6) and the third pulling plug (7) have the same structure as the first pulling plug (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811159604.5A CN109549693B (en) | 2018-09-30 | 2018-09-30 | Telescopic cervical dilation rod and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811159604.5A CN109549693B (en) | 2018-09-30 | 2018-09-30 | Telescopic cervical dilation rod and use method thereof |
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| Publication Number | Publication Date |
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| CN109549693A CN109549693A (en) | 2019-04-02 |
| CN109549693B true CN109549693B (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811159604.5A Expired - Fee Related CN109549693B (en) | 2018-09-30 | 2018-09-30 | Telescopic cervical dilation rod and use method thereof |
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| CN (1) | CN109549693B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110720969B (en) * | 2019-10-17 | 2021-01-15 | 深圳泰睿仕医疗科技有限公司 | Disposable minimally invasive dilation drainage kit |
| US20230218317A1 (en) * | 2022-01-12 | 2023-07-13 | Code Grey Innovation and Development, LLC | Cervical Dilator |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE505615C2 (en) * | 1993-01-08 | 1997-09-22 | Hans Elgerot | Catheter for stoma-urological or similarly operated patients |
| CN2381341Y (en) * | 1999-08-10 | 2000-06-07 | 陈昭 | Disposable continuous cervical dilator |
| CN2647345Y (en) * | 2003-10-31 | 2004-10-13 | 吴德印 | Combined cervical dilatator |
| CN200994985Y (en) * | 2007-01-08 | 2007-12-26 | 赵金云 | Uterus neck dilator |
| CN204582273U (en) * | 2015-04-24 | 2015-08-26 | 方文兰 | A kind of gradual cervical dilator |
| CN105193354A (en) * | 2015-11-03 | 2015-12-30 | 莱克电气股份有限公司 | Handle structure of dust collector |
| CN205674059U (en) * | 2016-06-12 | 2016-11-09 | 重庆蓝岸通讯技术有限公司 | The contractile tweezers of tweezer head |
| CN206102734U (en) * | 2016-07-21 | 2017-04-19 | 郑州康盛久泰医疗器械股份有限公司 | Medical electrotome pen with flexible function |
| CN106989976B (en) * | 2017-05-25 | 2023-02-28 | 郑州大学第一附属医院 | Specimen sampler |
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2018
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