CN108245221B - Low cutting temperature acetabular bone file - Google Patents
Low cutting temperature acetabular bone file Download PDFInfo
- Publication number
- CN108245221B CN108245221B CN201810035418.4A CN201810035418A CN108245221B CN 108245221 B CN108245221 B CN 108245221B CN 201810035418 A CN201810035418 A CN 201810035418A CN 108245221 B CN108245221 B CN 108245221B
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- cutting
- holes
- shell
- chip
- cooling
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- 238000005520 cutting process Methods 0.000 title claims abstract description 96
- 210000000988 bone and bone Anatomy 0.000 title abstract description 25
- 230000036346 tooth eruption Effects 0.000 claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 22
- 210000002449 bone cell Anatomy 0.000 abstract description 4
- 230000017074 necrotic cell death Effects 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 3
- 210000000588 acetabulum Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 210000000845 cartilage Anatomy 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 2
- 210000004394 hip joint Anatomy 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 210000005065 subchondral bone plate Anatomy 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002805 bone matrix Anatomy 0.000 description 1
- 210000002808 connective tissue Anatomy 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000011540 hip replacement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001338 necrotic effect Effects 0.000 description 1
- 238000001356 surgical procedure 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
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1659—Surgical rasps, files, planes, or scrapers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1635—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for grafts, harvesting or transplants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1664—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip
- A61B17/1666—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip for the acetabulum
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Transplantation (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a low-cutting-temperature acetabular file, which comprises a hemispherical shell with hollowed-out inner part, wherein the outer spherical surface of the shell is provided with a plurality of cutting teeth which are uniformly distributed on the spiral line of the outer spherical surface of the shell at equal spiral angles; the cutting teeth comprise through holes arranged on the shell, the through holes comprise first chip grooves and second chip grooves which are sequentially arranged along the front and back of the outer spherical spiral line, and the through holes further comprise cutting edges which cover the second chip grooves and arch outwards; the cutting edge outer side face is provided with a plurality of cooling through holes, the cooling through holes radially penetrate through the cutting edge along the axis direction of the shell, and the cooling through holes are arranged on the cutting edge outer side face in a multi-row orderly manner. The effective reduction of cutting tooth sets up the cooling through-hole at every cutting tooth simultaneously, further reduces the area of contact of cutting tooth and bone tissue to the effectual cutting temperature who reduces the acetabular bone file effectively solves the condition of the bone cell necrosis that the cutting high temperature arouses.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a low-cutting-temperature acetabular file.
Background
Acetabular files are the necessary surgical tools for treating acetabular fossa in hip replacement surgery, and the main cutting objects are acetabular cartilage and a small amount of subchondral bone. In the operation, the size of the acetabulum is estimated according to the X-ray irradiation of a patient, and an acetabular file with the cutter body diameter smaller than the size of the acetabulum by 4mm is selected for acetabular reconstruction. Through the low-rotation-speed movement of the dry cutting teeth on the surface of the acetabular file under the action of certain pressure, necrotic tissues at the hip joint of a patient are cut off, and the tooth edge at the top end can cut two different tissues of acetabular cartilage and subchondral bone at the same time. Starting from a small-size acetabular file, progressively grinding the acetabulum by increasing the diameter of the cutter body by 2mm each time. The cutter body should be fully seated within the acetabulum to cut the patient's acetabulum to approximate the outer dimensions of the prosthesis. The acetabulum must be rasped to a sufficient depth until the acetabulum reaches the last desired size to effect acetabular reconstruction.
Bone tissue is a special connective tissue and consists of various cells and bone matrixes among the cells, bone tissue can cause bone cell necrosis when being exposed to the temperature of 50-55 ℃, the outer side surface of a cutting tooth is difficult to avoid contact friction with the bone tissue in the process of rasping hip joint cartilage of the traditional acetabulum, and the cutting temperature is generally close to or even exceeds the temperature at which the bone cells generate thermal necrosis, so that the healing of wounds of patients is influenced, and the operation is greatly plagued.
The cutting teeth of the existing porous acetabular file are uniformly distributed along a spherical spiral line, the spiral line distance between the front cutting teeth and the rear cutting teeth on the spherical spiral line is constant, the distribution results in fewer cutting teeth distributed on the small-diameter circumference of the upper half part of the hemispherical surface of the acetabular file, and the number of cutting teeth distributed on the large-diameter circumference of the lower half part of the hemispherical surface of the acetabular file is far greater than that of the upper half part. Such cutting tooth distribution can lead to the cutting tooth number that gets into the cutting at the beginning in the in-process of cutting not many, but the cutting tooth number that gets into the cutting at the back can steep increase, leads to cutting moment steep increase, and the cutting process is unstable, and doctor's physical demands are big. Not only the steep increase problem is solved, but also the larger contact area between the acetabular file and the bone tissue is caused by more cutting teeth of the existing acetabular file, so that the cutting temperature is greatly increased, and the bone tissue is damaged. There is a need to develop an acetabular file with low cutting temperature.
Disclosure of Invention
The invention aims to provide an acetabular bone file with low cutting temperature, which can effectively solve the problems existing in the background technology.
The technical problems to be solved by the invention are realized by adopting the following technical scheme:
the low-cutting-temperature acetabular file comprises a hemispherical shell with hollowed-out inside, wherein a plurality of cutting teeth are arranged on the outer spherical surface of the shell, and the cutting teeth are uniformly distributed on an outer spherical surface spiral line of the shell at equal spiral angles; the cutting teeth comprise through holes arranged on the shell, the through holes comprise first chip grooves and second chip grooves which are sequentially arranged along the front and back of the outer spherical spiral line, and the through holes further comprise cutting edges which cover the second chip grooves and arch outwards; the cutting edge outer side face is provided with a plurality of cooling through holes, the cooling through holes radially penetrate through the cutting edge along the axis direction of the shell, and the cooling through holes are arranged on the cutting edge outer side face in a multi-row orderly manner.
Further, the cooling through holes are transversely arranged from the front end to the rear end of the cutting edge.
Further, the width of the first chip groove is larger than that of the second chip groove, so that the width of the through hole is contracted backwards along the outer spherical spiral line.
Further, the first chip removal groove is a circular groove.
Further, the second chip removal groove is a semi-elliptic groove.
Further, the larger end of the second junk slot intersects the first junk slot.
Further, the diameter of the first junk slot is equal to the long radius of the second junk slot.
Further, the height of the cutting edge along the spiral line direction of the outer spherical surface is reduced from front to back.
Further, the inner side of the cutting edge is outwards arched to form a chip guide channel.
Further, a cross-shaped supporting frame is arranged at the bottom of the shell.
The cutting teeth are optimally distributed, the cutting teeth at the top just start in the cutting process of the acetabular file participate in cutting, then the number of cutting teeth entering the cutting is increased at a constant speed, so that the cutting torque is increased uniformly, the cutting process is stable, and the physical consumption of doctors is small. In addition, the number of cutting teeth of the acetabular bone file with optimized cutting teeth is greatly reduced compared with that of the existing acetabular bone file, and the processing time is greatly shortened.
The beneficial effects of the invention are as follows:
according to the invention, the cutting teeth of the acetabular file are uniformly distributed on the spherical spiral line at equal spiral angles, so that the acetabular file with optimally distributed cutting teeth is obtained. The cutting teeth uniformly enter the cutting process in the rotation process of the acetabular file, so that the cutting torque is uniformly increased, the cutting process is stable, and the physical consumption of doctors is small. The number of cutting teeth of the optimized acetabular file is reduced greatly, and the processing time is shortened greatly. The effective reduction of cutting tooth, very big reduction cutting tooth and bone tissue's area of contact, offered the cooling through-hole at every cutting tooth simultaneously, further reduced cutting tooth and bone tissue's area of contact to the effectual cutting temperature that reduces the acetabular bone file effectively solves the condition that the bone cell necrosis that the cutting high temperature arouses.
Drawings
Fig. 1 is a schematic diagram of the front structure of an embodiment of the present invention.
Fig. 2 is a schematic view of the back structure of an embodiment of the present invention.
Fig. 3 is a schematic view of a via structure according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a quarter circle arrangement in accordance with an embodiment of the present invention.
Fig. 5 is a schematic view of a spiral of a comparative example of the present invention.
FIG. 6 is a schematic diagram of a quarter-circle arrangement of a comparative example of the present invention.
Fig. 7 is a schematic view of the cutting edge structure of example 1 of the present invention.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
Example 1
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 7, the low-cutting-temperature acetabular file comprises a hemispherical shell 1 with a hollowed-out interior, wherein a plurality of cutting teeth 2 are arranged on the outer spherical surface of the shell 1, and the cutting teeth 2 are uniformly distributed on the spiral line of the outer spherical surface of the shell 1 at equal spiral angles.
When all cutting teeth 2 are rotated to the quarter circle to obtain the situation shown in fig. 4, all cutting teeth 2 are uniformly distributed on the spherical spiral at equal helix angles. According to the distribution condition, the following acetabular file with optimally distributed cutting teeth is designed.
The cutting teeth 2 which are just at the top participate in cutting in the cutting process of the optimized distribution acetabular file, and then the number of cutting teeth entering into cutting is increased at a constant speed, so that the cutting torque is increased uniformly, the cutting process is stable, and the physical consumption of doctors is small. In addition, the number of cutting teeth of the acetabular bone file with the optimized distribution of the cutting teeth 2 is greatly reduced compared with that of the existing acetabular bone file, and the processing time is greatly shortened. The number of cutting teeth is effectively reduced, and the contact area of the acetabular file and bone tissue is correspondingly reduced, so that the cutting temperature of the acetabular file is reduced, and the damage to the bone tissue is reduced.
The cutting tooth 2 comprises a through hole 3 arranged on the shell 1, the through hole 3 comprises a first chip groove 4 and a second chip groove 5 which are sequentially arranged along the outer spherical spiral line, and the through hole 3 further comprises a cutting edge 6 which covers the second chip groove 5 and is arched outwards.
When the acetabular file works, the cutting teeth 2 are screwed into the shell 1 along the spiral line of the outer spherical surface of the shell to cut, most of cutting scraps enter the shell 1 through the space between the second chip groove 5 and the cutting edge 6, and the first chip groove 4 is used for containing the cutting scraps at the notch of the cutting edge 6 to prevent the cutting scraps from remaining.
The width of the first chip groove 4 is larger than that of the second chip groove 5, so that the width of the through hole 3 is contracted backwards along the outer spherical spiral line.
The first flutes 4 are intended to receive chips at the cut of the cutting edge 6, and in order to prevent the chips from remaining, it is defined that the first flutes 4 have a greater width than the second flutes 5, which enables a better reception of chips.
The first chip removal groove 4 is a circular groove.
The second chip removal groove 5 is a semi-elliptic groove.
The larger end of the second chip groove 5 intersects the first chip groove 4.
The first chip groove 4 of the circular groove intersects with the second chip groove 5 of the semi-elliptical groove, and the through hole 3 narrowed from front to back is more favorable for guiding the cutting chips into the interior of the shell 1.
The diameter of the first flutes 4 is equal to the major radius of the second flutes 5.
The height of the cutting edge 6 along the spiral line direction of the outer spherical surface is reduced from front to back.
The cutting edge 6 is reduced from front to back so that the inner side of the cutting edge can guide cutting scraps, and the cutting edge 6 with the decreasing height always keeps line contact during cutting, so that the cutting effect is ensured, and the cutting edge 6 is prevented from rubbing to the outer side to cause rough cut surfaces.
The inner side of the cutting edge 6 is outwards arched to form a chip guiding channel.
The bottom of the shell 1 is provided with a cross-shaped supporting frame 7.
Consider casing 1 to be the hemispherical of inside fretwork and offered a plurality of through-holes 3 on the casing 1, in order to obtain better stability in the structure on using, set up support frame 7 and support casing 1, cross support frame 7 is as the installation position when the installation simultaneously for casing 1 installs more firmly, and cross support frame 7 can more even bear torque force.
The outer side surface of the cutting edge 6 is provided with a plurality of cooling through holes 8, the cooling through holes 8 radially penetrate through the cutting edge 6 along the axis direction of the shell 1, and the cooling through holes 8 are arranged on the outer side surface of the cutting edge 6 in a multi-row orderly manner. The cooling through holes 8 are arranged to effectively reduce the contact area between the outer side surface of the cutting edge 6 and bone tissue, so that the cutting temperature is greatly reduced, the cooling through holes 8 are arranged on the outer side surface of the cutting edge 6 in a multi-row ordered manner, the cooling through holes 8 can effectively surround the outer side surface of the cutting edge 6, and the utilization rate of the cooling through holes 8 is improved.
The cooling through holes 8 are transversely arranged from the front end to the rear end of the cutting edge 6. Considering that the front end of the cutting edge 6 is higher than the rear end, the contact area between the front end of the outer side surface of the cutting edge 6 and bone tissue is larger than the rear end during cutting, so that the cooling through holes 8 are orderly arranged on the outer side surface of the cutting edge 6 in a plurality of rows and are transversely arranged, and the contact area can be greatly reduced according to the cutting condition.
Comparative example 1
The utility model provides an existing acetabular bone file, includes hemispherical and inside fretwork's casing, the outer spherical of casing is provided with a plurality of cutting teeth, the cutting teeth is along sphere helix evenly distributed, and the helix distance of preceding and succeeding cutting teeth on the sphere helix is certain, the sphere helix is as shown in figure 5.
When the cutting teeth of the conventional acetabular file are rotated to the quarter circle surface, as shown in fig. 6, the situation that the number of cutting teeth entering into the cutting is increased sharply can be seen in the process from the upper spherical part to the lower spherical part. There are more cutting teeth on the acetabular bone file, greatly increased the area of contact of cutting teeth and bone tissue, lead to cutting temperature higher, damage bone tissue.
The foregoing is a description of specific embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the invention, and that these obvious alternatives fall within the scope of the invention.
Claims (3)
1. A low cutting temperature acetabular file characterized by: the outer spherical surface of the shell is provided with a plurality of cutting teeth which are uniformly distributed on an outer spherical surface spiral line of the shell at equal spiral angles; the cutting teeth comprise through holes arranged on the shell, the through holes comprise first chip grooves and second chip grooves which are sequentially arranged along the front and back of the outer spherical spiral line, and the through holes further comprise cutting edges which cover the second chip grooves and arch outwards; the outer side surface of the cutting edge is provided with a plurality of cooling through holes, the cooling through holes radially penetrate through the cutting edge along the axis direction of the shell, and the cooling through holes are orderly arranged on the outer side surface of the cutting edge in a plurality of rows;
the cooling through holes are transversely arranged along the front end to the rear end of the cutting edge;
the width of the first chip removal groove is larger than that of the second chip removal groove, so that the width of the through hole is contracted backwards along the spiral line of the outer spherical surface;
the first chip removal groove is a circular groove;
the second chip removal groove is a semi-elliptic groove;
the larger end of the second chip groove is intersected with the first chip groove;
the diameter of the first chip groove is equal to the long radius of the second chip groove;
the height of the cutting edge along the spiral line direction of the outer spherical surface is reduced from front to back.
2. The low cutting temperature acetabular file of claim 1, wherein: the inner side of the cutting edge is outwards arched to form a chip guide channel.
3. The low cutting temperature acetabular file of claim 1, wherein: the bottom of the shell is provided with a cross-shaped supporting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810035418.4A CN108245221B (en) | 2018-01-15 | 2018-01-15 | Low cutting temperature acetabular bone file |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810035418.4A CN108245221B (en) | 2018-01-15 | 2018-01-15 | Low cutting temperature acetabular bone file |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108245221A CN108245221A (en) | 2018-07-06 |
| CN108245221B true CN108245221B (en) | 2024-02-13 |
Family
ID=62727250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810035418.4A Active CN108245221B (en) | 2018-01-15 | 2018-01-15 | Low cutting temperature acetabular bone file |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108245221B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2337963Y (en) * | 1998-03-05 | 1999-09-15 | 陈汉文 | Acetabulum file |
| FR2903591A1 (en) * | 2006-07-11 | 2008-01-18 | Biomet France Sarl | Surgical instrument e.g. calcar mill, acetabular reamer cup, for cutting and/or compressing a cartilage and a bone, comprises a work area made up of a semi-aromatic semi-crystalline glass fiber reinforced polyarylamide |
| CN202168842U (en) * | 2011-06-30 | 2012-03-21 | 北京爱康宜诚医疗器材股份有限公司 | Overhaul type semi-moon acetabulum file |
| CN202342123U (en) * | 2011-08-17 | 2012-07-25 | 方群 | Acetabulum file |
| CN203263481U (en) * | 2013-04-19 | 2013-11-06 | 北京亿佳鑫博科技有限公司 | Improved acetabular file cross |
| CN203749493U (en) * | 2014-01-09 | 2014-08-06 | 王禹基 | Toothed acetabulum file |
| CN104688297A (en) * | 2015-03-26 | 2015-06-10 | 常州玛斯特精密工具有限公司 | Acetabular bone file |
| CN204765799U (en) * | 2015-07-08 | 2015-11-18 | 北京普菲斯特医疗器械有限公司 | Acetabular bone file |
| CN106137312A (en) * | 2016-06-22 | 2016-11-23 | 天津理工大学 | Antifriction cooling drill bit with micro-texture and preparation method thereof |
| CN206568347U (en) * | 2017-01-14 | 2017-10-20 | 河北小蜜蜂工具集团有限公司 | A kind of special-shaped tooth protecting diamond disc saw |
| CN209360804U (en) * | 2018-01-15 | 2019-09-10 | 广东工业大学 | A kind of low cutting temperature reamer for hip arthroplasty,acetabulum |
-
2018
- 2018-01-15 CN CN201810035418.4A patent/CN108245221B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2337963Y (en) * | 1998-03-05 | 1999-09-15 | 陈汉文 | Acetabulum file |
| FR2903591A1 (en) * | 2006-07-11 | 2008-01-18 | Biomet France Sarl | Surgical instrument e.g. calcar mill, acetabular reamer cup, for cutting and/or compressing a cartilage and a bone, comprises a work area made up of a semi-aromatic semi-crystalline glass fiber reinforced polyarylamide |
| CN202168842U (en) * | 2011-06-30 | 2012-03-21 | 北京爱康宜诚医疗器材股份有限公司 | Overhaul type semi-moon acetabulum file |
| CN202342123U (en) * | 2011-08-17 | 2012-07-25 | 方群 | Acetabulum file |
| CN203263481U (en) * | 2013-04-19 | 2013-11-06 | 北京亿佳鑫博科技有限公司 | Improved acetabular file cross |
| CN203749493U (en) * | 2014-01-09 | 2014-08-06 | 王禹基 | Toothed acetabulum file |
| CN104688297A (en) * | 2015-03-26 | 2015-06-10 | 常州玛斯特精密工具有限公司 | Acetabular bone file |
| CN204765799U (en) * | 2015-07-08 | 2015-11-18 | 北京普菲斯特医疗器械有限公司 | Acetabular bone file |
| CN106137312A (en) * | 2016-06-22 | 2016-11-23 | 天津理工大学 | Antifriction cooling drill bit with micro-texture and preparation method thereof |
| CN206568347U (en) * | 2017-01-14 | 2017-10-20 | 河北小蜜蜂工具集团有限公司 | A kind of special-shaped tooth protecting diamond disc saw |
| CN209360804U (en) * | 2018-01-15 | 2019-09-10 | 广东工业大学 | A kind of low cutting temperature reamer for hip arthroplasty,acetabulum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108245221A (en) | 2018-07-06 |
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