CN106580327B - Angle gauge for measuring aortic sinus angle - Google Patents
Angle gauge for measuring aortic sinus angle Download PDFInfo
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- CN106580327B CN106580327B CN201611129994.2A CN201611129994A CN106580327B CN 106580327 B CN106580327 B CN 106580327B CN 201611129994 A CN201611129994 A CN 201611129994A CN 106580327 B CN106580327 B CN 106580327B
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- 210000003291 sinus of valsalva Anatomy 0.000 title claims abstract description 38
- 239000000463 material Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 description 8
- 210000001765 aortic valve Anatomy 0.000 description 5
- 210000004204 blood vessel Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- 206010002329 Aneurysm Diseases 0.000 description 1
- 206010002915 Aortic valve incompetence Diseases 0.000 description 1
- 229920004934 Dacron® Polymers 0.000 description 1
- 206010014666 Endocarditis bacterial Diseases 0.000 description 1
- 230000010100 anticoagulation Effects 0.000 description 1
- 201000002064 aortic valve insufficiency Diseases 0.000 description 1
- 208000009361 bacterial endocarditis Diseases 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 208000011316 hemodynamic instability Diseases 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 201000007119 infective endocarditis Diseases 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1071—Measuring physical dimensions, e.g. size of the entire body or parts thereof measuring angles, e.g. using goniometers
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- External Artificial Organs (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to an angle gauge for measuring aortic sinus angle, which comprises a bottom dial, a rotary needle and a rotary rod, wherein the rotary needle is arranged on the bottom dial; wherein the rotating needle is vertically connected with the rotating rod, is arranged at the bottom of the rotating rod and can rotate along with the rotating rod; the bottom of the rotary rod is vertically arranged on the dial, and the rotary needle can be driven to rotate on the dial by rotating the rotary rod to mark the angle to be measured; further, a clamping structure is arranged on the rotary rod and used for fixing the rotary rod after the rotary rod rotates to a specific position. Further, the rotating needle also has a marking structure. The invention can be used for conveniently measuring the angle of the aortic sinus and marking the cut starting position by using the rotary needle marking structure, thereby saving the operation time.
Description
Technical Field
The invention belongs to an auxiliary medical instrument used in vascular replacement, in particular to an auxiliary medical instrument used in aortic root replacement of a reserved aortic valve, and particularly relates to an angle gauge for measuring the angle of an aortic sinus.
Background
Aortic root replacement is commonly used to treat lesions in the aortic root, which typically requires replacement of the aortic valve, but when the aortic root has been deformed and the morphology of the aortic valve leaflets is normal, readjustment of the native valve leaflets to improve leaflet coaptation may avoid complications such as long-term anticoagulation, hemodynamic instability, fluid pressure imbalance, and bacterial endocarditis, which have contributed to the creation of the concept of aortic root replacement surgery that preserves the valve, and have led to the research interest of many students. DAVID et al reported that the aortic root re-implantation of the reserved aortic valve treated 10 cases of aortic root aneurysms combined with aortic valve insufficiency, i.e. the aortic root reconstruction of the reserved straight dacron vascular row. In recent years, aortic root replacement procedures that preserve the aortic valve have been continuously improved and perfected due to their great advantages.
The aortic wall between the aortic annulus and the sinotubular junction bulges outwardly in a ampulla-like manner, and this section of the bulged aortic lumen is called the aortic sinus. In the operation, by determining the occupied angle and position of the aortic sinus and determining the cutting position according to the occupied angle and position, how to more quickly prepare the angle of the measured aortic sinus and the cutting according to the angle selection become a research key point, so that a medical instrument capable of going deep into blood vessels and accurately measuring the angle of the aortic sinus and the cutting position marked by the angle in the operation is needed to complete the operation steps, the operation time is saved, and the operation success is further ensured.
The invention aims to provide an angle gauge for measuring the aortic sinus angle, which aims at solving the problem that the prior art is not a medical instrument for measuring the aortic sinus angle pertinently.
Disclosure of Invention
In order to solve the problem that the medical instrument for measuring the aortic sinus angle is not targeted in the prior art, the invention aims to provide an angle gauge for measuring the aortic sinus angle, which can solve the problem.
The aim of the invention is achieved by the following technical scheme:
the angle gauge for measuring the aortic sinus angle comprises a bottom dial, a rotary needle and a rotary rod, and is characterized in that the rotary needle is vertically connected with the rotary rod, is arranged at the bottom of the rotary rod and can rotate along with the rotary rod; the rotary rod bottom sets up perpendicularly on the calibrated scale, rotates the rotary rod and can drive the rotatory needle and rotate on the calibrated scale, marks the angle of need measurement. The angle gauge drives the rotary needle to scratch a certain angle on the dial by the rotary rod, and the angle of 360 degrees occupied by the aortic sinus is measured, so that the angle gauge is accurate and rapid.
Further, a clamping structure for fixing the rotary rod after the rotary rod is rotated to a specific position is arranged on or beside the rotary rod. The setting of screens structure can make things convenient for fixed angle, prevents to take out or observe the determination that the angle changes the influence angle size.
Further, the clamping structure is provided with a plurality of annular structures at the position of the rotating rod and used for arranging the clamping structure beside the rotating rod, so that the effectiveness of the clamping effect is ensured.
Further, the connection mode of the rotary rod and the dial can be any mode for ensuring the rotary rod to rotate along the center of the dial, wherein the preferable mode is as follows: the rotary rod bottom sets up annular protruding structure, the calibrated scale center sets up a hollow foraminiferous structure, the annular protruding structure of rotary rod sets up in hollow foraminiferous structure. The annular protruding structure corresponds to the hollow perforated structure. The annular protruding structure and the hollow perforated structure which are correspondingly arranged can ensure that the rotary rod rotates along the dial.
Further, the rotating needle is arranged above the annular protruding structure of the rotating rod and is positioned on the hollow perforated structure. This arrangement does not prevent the rotating rod from driving the rotating needle to rotate.
Further, the screens structure is the structure that sets up on the rotary rod and reciprocate, and the lower part structure of this structure sets up in hollow foraminiferous structure and does not influence the rotation of rotary rod, and the lower part structure is little hook structure or L shape structure, sets up in annular protruding structure below. By moving the clamping structure upwards, the small hook structure or the L-shaped structure can abut against the annular protruding structure, and the annular protruding structure is clamped so that the annular protruding structure can not rotate any more.
Or, the clamping structure is a structure which is arranged on the rotary rod and can move up and down, the lower structure of the structure is arranged in the hollow perforated structure and does not influence the rotation of the rotary rod, the lower structure is an L-shaped structure and is arranged above the annular protruding structure. By moving the clamping structure downwards, the L-shaped structure can abut against the annular protruding structure, and the annular protruding structure is clamped so that the annular protruding structure can not rotate any more.
Further, the outer edge of the dial is uniformly provided with 1-360-degree scales.
Further, the angle gauge is made of rotary medical plastic materials.
Further, a marking structure is arranged on the rotary needle. The marking structure can mark the cutting part when measuring the angle of the aortic sinus, so that the position can be conveniently determined as soon as possible during cutting.
Further, the marking structure is a marker pen containing nontoxic substances appearing on blood vessels.
When in use, the instrument is taken to be placed in a blood vessel, positioned under X-ray projection and rotated, a clamping structure is used for clamping and fixing angles when the edge of the aortic sinus is reached, a marking structure is used for marking a cutting part, data is read after the fixing, and then the subsequent measurement of the angle of the aortic sinus and marking of the cutting part are sequentially carried out. Taking out the angle gauge after all aortic sinus measurement and marking are completed,
compared with the prior art, the angle gauge for measuring the aortic sinus angle can accurately know the aortic sinus angle and mark the cutting part by rotating the rotating rod, and the arrangement of the rotating rod enables measurement to be three-dimensional and simplified.
Drawings
FIG. 1 is a schematic diagram of the whole structure of the angle gauge with the mark structure;
FIG. 2 is a schematic perspective view of the angle gauge with the mark structure of the invention;
FIG. 3 is a schematic view of the dial plate structure of the present invention;
FIG. 4 is a schematic view of the overall structure of the structure without marks according to the present invention;
FIG. 5 is a schematic diagram of a perspective structure of a dial of the present invention;
FIG. 6 is a schematic view of the upper structure of the lower structure of the present invention in the form of annular projection;
FIG. 7 is a schematic view of the lower structure of the present invention in the form of annular projection;
in the figure, 1, a dial; 11. a hollow perforated structure; 2. rotating the needle; 21. marking a structure; 3. a rotating rod; 31. an annular protruding structure; 4. a clamping structure; 41. a lower structure; 42. a ring-shaped structure.
Detailed Description
Example 1 Angle gauge for measuring aortic sinus angle
The angle gauge for measuring the aortic sinus angle comprises a bottom dial 1, a rotary needle 2 and a rotary rod 3, and is characterized in that the rotary needle 2 is vertically connected with the rotary rod 3, is arranged at the bottom of the rotary rod 3 and can rotate along with the rotary rod 3; the rotary rod 3 bottom sets up perpendicularly on calibrated scale 1, can drive rotatory needle 2 rotatory on calibrated scale 1 through rotating rotary rod 3, marks the angle of need measurement. The angle gauge drives the rotary needle 2 to scratch a certain angle on the dial 1 through the rotary rod 3, and the angle of 360 degrees occupied by the aortic sinus is measured, so that the angle gauge is accurate and rapid. The rotary rod 3 bottom sets up annular protruding structure 31, and calibrated scale 1 center sets up a hollow foraminiferous structure 11, and the annular protruding structure 31 of rotary rod 3 sets up in hollow foraminiferous structure 11. The annular projection structure 31 corresponds to the hollow perforated structure 11. The correspondingly arranged annular protruding structure 31 and the hollow perforated structure 11 can ensure that the rotary rod 3 rotates along the dial 1. The rotating needle 2 is arranged above the annular protruding structure 31 of the rotating rod 3 and on the hollow perforated structure 11. This arrangement does not prevent the rotating rod 3 from rotating the rotating needle 2. The outer edge of the dial 1 is uniformly provided with 1-360 degree scales. And preparing the angle gauge rotary medical plastic material.
Example 2 an angle gauge for measuring aortic sinus angle
The angle gauge for measuring the aortic sinus angle comprises a bottom dial 1, a rotary needle 2 and a rotary rod 3, and is characterized in that the rotary needle 2 is vertically connected with the rotary rod 3, is arranged at the bottom of the rotary rod 3 and can rotate along with the rotary rod 3; the rotary rod 3 bottom sets up perpendicularly on calibrated scale 1, can drive rotatory needle 2 rotatory on calibrated scale 1 through rotating rotary rod 3, marks the angle of need measurement. The angle gauge drives the rotary needle 2 to scratch a certain angle on the dial 1 through the rotary rod 3, and the angle of 360 degrees occupied by the aortic sinus is measured, so that the angle gauge is accurate and rapid. A detent 4 for fixing the rotary lever 3 after rotation to a specific position is provided on or beside the rotary lever 3. The setting of screens structure 4 can make things convenient for fixed angle, prevents to take out or observe the determination that the angle changes the influence angle size. The clamping structure 4 is provided with a plurality of annular structures 42 at the position of the rotating rod 3, and is used for arranging the clamping structure 4 beside the rotating rod 3, so that the effectiveness of the clamping effect is ensured. The rotary rod 3 bottom sets up annular protruding structure 31, and calibrated scale 1 center sets up a hollow foraminiferous structure 11, and the annular protruding structure 31 of rotary rod 3 sets up in hollow foraminiferous structure 11. The annular projection structure 31 corresponds to the hollow perforated structure 11. The correspondingly arranged annular protruding structure 31 and the hollow perforated structure 11 can ensure that the rotary rod 3 rotates along the dial 1. The rotating needle 2 is arranged above the annular protruding structure 31 of the rotating rod 3 and on the hollow perforated structure 11. This arrangement does not prevent the rotating rod 3 from rotating the rotating needle 2. The clamping structure 4 is a structure which is arranged on the rotary rod 3 and can move up and down, the lower structure 41 of the structure is arranged in the hollow perforated structure 11 and does not influence the rotation of the rotary rod 3, and the lower structure 41 is a small hook structure or an L-shaped structure and is arranged below the annular protruding structure 31. By moving the catch structure 4 upwards, the hook structure or the L-shaped structure can abut against the annular protruding structure 31, catching the annular protruding structure 31 against rotation. The outer edge of the dial 1 is uniformly provided with 1-360 degree scales. And preparing the angle gauge rotary medical plastic material.
Example 3 an angle gauge for measuring aortic sinus angle
The angle gauge for measuring the aortic sinus angle comprises a bottom dial 1, a rotary needle 2 and a rotary rod 3, and is characterized in that the rotary needle 2 is vertically connected with the rotary rod 3, is arranged at the bottom of the rotary rod 3 and can rotate along with the rotary rod 3; the rotary rod 3 bottom sets up perpendicularly on calibrated scale 1, can drive rotatory needle 2 rotatory on calibrated scale 1 through rotating rotary rod 3, marks the angle of need measurement. The angle gauge drives the rotary needle 2 to scratch a certain angle on the dial 1 through the rotary rod 3, and the angle of 360 degrees occupied by the aortic sinus is measured, so that the angle gauge is accurate and rapid. A detent 4 for fixing the rotary lever 3 after rotation to a specific position is provided on or beside the rotary lever 3. The setting of screens structure 4 can make things convenient for fixed angle, prevents to take out or observe the determination that the angle changes the influence angle size. The clamping structure 4 is provided with a plurality of annular structures 42 at the position of the rotating rod 3, and is used for arranging the clamping structure 4 beside the rotating rod 3, so that the effectiveness of the clamping effect is ensured. The rotary rod 3 bottom sets up annular protruding structure 31, and calibrated scale 1 center sets up a hollow foraminiferous structure 11, and the annular protruding structure 31 of rotary rod 3 sets up in hollow foraminiferous structure 11. The annular projection structure 31 corresponds to the hollow perforated structure 11. The correspondingly arranged annular protruding structure 31 and the hollow perforated structure 11 can ensure that the rotary rod 3 rotates along the dial 1. The rotating needle 2 is arranged above the annular protruding structure 31 of the rotating rod 3 and on the hollow perforated structure 11. This arrangement does not prevent the rotating rod 3 from rotating the rotating needle 2. The clamping structure 4 is a structure which is arranged on the rotary rod 3 and can move up and down, the lower structure 41 of the structure is arranged in the hollow perforated structure 11 and does not influence the rotation of the rotary rod 3, the lower structure 41 is an L-shaped structure and is arranged above the annular protruding structure 31. By moving the catch 4 downwards, the L-shaped structure can abut against the annular projection 31, catching the annular projection 31 against rotation. The outer edge of the dial 1 is uniformly provided with 1-360 degree scales. And preparing the angle gauge rotary medical plastic material.
Example 4 an angle gauge for measuring aortic sinus angle
The angle gauge for measuring the aortic sinus angle comprises a bottom dial 1, a rotary needle 2 and a rotary rod 3, and is characterized in that the rotary needle 2 is vertically connected with the rotary rod 3, is arranged at the bottom of the rotary rod 3 and can rotate along with the rotary rod 3; the rotary rod 3 bottom sets up perpendicularly on calibrated scale 1, can drive rotatory needle 2 rotatory on calibrated scale 1 through rotating rotary rod 3, marks the angle of need measurement. The angle gauge drives the rotary needle 2 to scratch a certain angle on the dial 1 through the rotary rod 3, and the angle of 360 degrees occupied by the aortic sinus is measured, so that the angle gauge is accurate and rapid. A detent 4 for fixing the rotary lever 3 after rotation to a specific position is provided on or beside the rotary lever 3. The setting of screens structure 4 can make things convenient for fixed angle, prevents to take out or observe the determination that the angle changes the influence angle size. The clamping structure 4 is provided with a plurality of annular structures 42 at the position of the rotating rod 3, and is used for arranging the clamping structure 4 beside the rotating rod 3, so that the effectiveness of the clamping effect is ensured. The rotary rod 3 bottom sets up annular protruding structure 31, and calibrated scale 1 center sets up a hollow foraminiferous structure 11, and the annular protruding structure 31 of rotary rod 3 sets up in hollow foraminiferous structure 11. The annular projection structure 31 corresponds to the hollow perforated structure 11. The correspondingly arranged annular protruding structure 31 and the hollow perforated structure 11 can ensure that the rotary rod 3 rotates along the dial 1. The rotating needle 2 is arranged above the annular protruding structure 31 of the rotating rod 3 and on the hollow perforated structure 11. This arrangement does not prevent the rotating rod 3 from rotating the rotating needle 2. The clamping structure 4 is a structure which is arranged on the rotary rod 3 and can move up and down, the lower structure 41 of the structure is arranged in the hollow perforated structure 11 and does not influence the rotation of the rotary rod 3, the lower structure 41 is an L-shaped structure and is arranged above the annular protruding structure 31. By moving the catch 4 downwards, the L-shaped structure can abut against the annular projection 31, catching the annular projection 31 against rotation. The outer edge of the dial 1 is uniformly provided with 1-360 degree scales. And preparing the angle gauge rotary medical plastic material. The rotating needle 2 is provided with a marking structure 21. The marking structure 21 can be used for marking the cutting part while measuring the angle of the aortic sinus, so that the position can be conveniently determined as soon as possible during cutting. The marking structure 21 is a marker pen containing non-toxic substances that appear on blood vessels.
The above description of embodiments is only for the understanding of the present invention. It should be noted that it will be apparent to those skilled in the art that modifications can be made to the present invention without departing from the principles of the invention, and such modifications will fall within the scope of the claims.
Claims (4)
1. The angle gauge for measuring the aortic sinus angle comprises a bottom dial (1), a rotating needle (2) and a rotating rod (3), and is characterized in that the rotating needle (2) is vertically connected with the rotating rod (3), is arranged at the bottom of the rotating rod (3) and can rotate along with the rotating rod (3); the bottom of the rotary rod (3) is vertically arranged on the dial (1), and the rotary rod (3) can be rotated to drive the rotary needle (2) to rotate on the dial (1) so as to mark the angle to be measured; the rotating rod (3) is provided with a clamping structure (4) for fixing the rotating rod (3) after rotating to a specific position; the rotary rod (3) is provided with an annular protruding structure (31) at the bottom, the center of the dial (1) is provided with a hollow perforated structure (11), and the annular protruding structure (31) of the rotary rod (3) is arranged in the hollow perforated structure (11); the clamping structure (4) is a structure which is arranged on the rotary rod (3) and can move up and down, a lower structure (41) of the structure is arranged in the hollow perforated structure (11) and does not influence the rotation of the rotary rod (3), the lower structure (41) is a small hook structure or an L-shaped structure, and the lower structure is arranged below or above the annular protruding structure (31); the angle gauge is made of medical plastic materials.
2. The angle gauge for measuring aortic sinus angle according to claim 1, characterized in that the rotating needle (2) is arranged above the annular protruding structure (31) of the rotating rod (3) and on the hollow perforated structure (11).
3. The angle gauge for measuring aortic sinus angle according to claim 1, wherein the outer edge of the dial (1) is uniformly provided with 1-360 ° graduations.
4. An angle gauge for measuring aortic sinus angle according to any one of claims 1-3, characterized in that the rotating needle (2) is provided with a marking structure (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129994.2A CN106580327B (en) | 2016-12-09 | 2016-12-09 | Angle gauge for measuring aortic sinus angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129994.2A CN106580327B (en) | 2016-12-09 | 2016-12-09 | Angle gauge for measuring aortic sinus angle |
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| Publication Number | Publication Date |
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| CN106580327A CN106580327A (en) | 2017-04-26 |
| CN106580327B true CN106580327B (en) | 2024-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611129994.2A Active CN106580327B (en) | 2016-12-09 | 2016-12-09 | Angle gauge for measuring aortic sinus angle |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062603U (en) * | 1989-05-08 | 1990-09-26 | 西北师范大学 | Measurer of cervix-trunk flexibility |
| CN2879112Y (en) * | 2005-12-30 | 2007-03-14 | 刘阳 | Circle angle location device for micro-tumour of galactophore |
| CN204562103U (en) * | 2015-02-27 | 2015-08-19 | 刘伟先 | One curing hysteromyoma sniffer |
| CN204797961U (en) * | 2015-02-10 | 2015-11-25 | 首都医科大学宣武医院 | Positioning tool of multimetering angle |
| CN205019065U (en) * | 2015-09-23 | 2016-02-10 | 复旦大学附属上海市第五人民医院 | Urethra angular surveying ware |
| CN205135411U (en) * | 2015-10-15 | 2016-04-06 | 山东科技大学 | Wedge cut leading truck of driling |
| JP2016080395A (en) * | 2014-10-10 | 2016-05-16 | 酒井医療株式会社 | Goniometer |
| CN206548510U (en) * | 2016-12-09 | 2017-10-13 | 中国医科大学附属第一医院 | The angle gauge used in the Aortic root replacement for retaining aorta petal |
-
2016
- 2016-12-09 CN CN201611129994.2A patent/CN106580327B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2062603U (en) * | 1989-05-08 | 1990-09-26 | 西北师范大学 | Measurer of cervix-trunk flexibility |
| CN2879112Y (en) * | 2005-12-30 | 2007-03-14 | 刘阳 | Circle angle location device for micro-tumour of galactophore |
| JP2016080395A (en) * | 2014-10-10 | 2016-05-16 | 酒井医療株式会社 | Goniometer |
| CN204797961U (en) * | 2015-02-10 | 2015-11-25 | 首都医科大学宣武医院 | Positioning tool of multimetering angle |
| CN204562103U (en) * | 2015-02-27 | 2015-08-19 | 刘伟先 | One curing hysteromyoma sniffer |
| CN205019065U (en) * | 2015-09-23 | 2016-02-10 | 复旦大学附属上海市第五人民医院 | Urethra angular surveying ware |
| CN205135411U (en) * | 2015-10-15 | 2016-04-06 | 山东科技大学 | Wedge cut leading truck of driling |
| CN206548510U (en) * | 2016-12-09 | 2017-10-13 | 中国医科大学附属第一医院 | The angle gauge used in the Aortic root replacement for retaining aorta petal |
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| CN106580327A (en) | 2017-04-26 |
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