CN106963449B - Medical drill bit - Google Patents
Medical drill bit Download PDFInfo
- Publication number
- CN106963449B CN106963449B CN201710245107.6A CN201710245107A CN106963449B CN 106963449 B CN106963449 B CN 106963449B CN 201710245107 A CN201710245107 A CN 201710245107A CN 106963449 B CN106963449 B CN 106963449B
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- CN
- China
- Prior art keywords
- drill
- medical
- cutting
- central axis
- medical drill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005553 drilling Methods 0.000 claims description 36
- 210000000988 bone and bone Anatomy 0.000 claims description 12
- 239000012634 fragment Substances 0.000 claims description 4
- 230000035515 penetration Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 6
- 210000003625 skull Anatomy 0.000 description 5
- 238000001356 surgical procedure Methods 0.000 description 3
- 238000012865 aseptic processing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000002324 minimally invasive surgery Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction 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
- A61B17/1613—Component parts
- A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
-
- 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
-
- 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
- A61B17/1695—Trepans or craniotomes, i.e. specially adapted for drilling thin bones such as the skull
-
- 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)
- Neurosurgery (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides a medical drill, which comprises a drill body and a cutting blade arranged at one end of the drill body, wherein the cutting blade comprises a curved blade line, a cutting feed surface and a cutting withdrawal surface which are arranged at two sides of the blade line, the blade line is connected with the central axis of the drill body, and the plane of the blade line is perpendicular to the central axis of the drill body.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a medical drill.
Background
In the existing surgery, most of the conventional cone drill bit is used for directly drilling bones, but during drilling, the cone drill bit is easily affected by the body position of a patient or the position of other equipment, so that the central axis of the cone drill bit cannot be perpendicular to the surface of the bones, and further deviation exists between the actual drilling position and the predicted drilling position, the drilling precision is low, and the operation requirement cannot be met.
In operations requiring high drilling accuracy, especially neurosurgery, there is a high possibility that the fine deviation of the drilling position may bring fatal consequences.
The following description is made with a minimally invasive procedure for eliminating lesions inside the human skull: after the position of the focus in the skull is determined by the medical image, a doctor drills a hole in the skull of the patient, and the surgical instrument is inserted into the skull through the obtained hole, and after the surgical instrument reaches the focus position, the focus is eliminated by operating the surgical instrument. During drilling, the central axis of the cone drill bit may not be perpendicular to the surface of the skull, which may cause the cone drill bit to swing during the hole entering, and further cause deviation between the actual drilling position and the predicted drilling position, and further cause a certain distance from the hole to the focus, which also causes the entering path of the surgical instrument to deviate from the predicted path completely, and finally causes the surgical instrument to fail to reach the focus position accurately, which greatly affects the success rate of the surgery and may cause irrecoverable results.
Disclosure of Invention
Therefore, the embodiment of the invention provides a medical drill to solve the problem of lower drilling position accuracy in the prior art.
The embodiment of the invention provides a medical drill, which comprises: the cutting blade comprises a curved blade line, a cutting feed surface and a cutting withdrawal surface, wherein the cutting feed surface and the cutting withdrawal surface are arranged on two sides of the blade line, the blade line is connected with the central axis of the drill body, and the plane where the blade line is located is perpendicular to the central axis of the drill body.
Specifically, in any embodiment of the present invention, the number of edges of the cutting edge is equal to or greater than two edges.
Specifically, in any embodiment of the present invention, the edge lines are all in the same plane.
Specifically, in any of the embodiments of the present invention, the cutting edges are uniformly distributed about the central axis of the bit body.
Specifically, in any embodiment of the present invention, the curve shape is a parabolic shape.
Specifically, in any embodiment of the present invention, the feed surface is parallel to the central axis of the drill bit body.
Specifically, in any embodiment of the present invention, the method further includes: and a chip flute between two adjacent cutting edges, the chip flute being capable of limiting the depth of the drilled hole.
Specifically, in any embodiment of the present invention, the relief surface is a curved surface.
Specifically, in any embodiment of the present invention, the number of edges of the cutting edge is any one of 3 edges, 4 edges, 5 edges, and 6 edges.
Specifically, in any embodiment of the present invention, the medical drill further comprises a guiding portion, wherein the guiding portion is used for limiting the drilling path of the medical drill.
According to the medical drill provided by the embodiment of the invention, the cutting edge comprises the curved edge line, the cutting feed surface and the cutting withdrawal surface on two sides of the edge line, the edge line is connected with the central axis of the drill body, and the plane where the edge line is located is perpendicular to the central axis of the drill body, so that a plane serving as a working surface can be drilled at an expected drilling position in advance, and the central axis of the cone drill can be perpendicular to the plane serving as the working surface when the cone drill is used for drilling in the follow-up process, so that deviation between the actual drilling position and the expected drilling position is reduced, and the drilling precision is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a medical drill according to an embodiment of the present invention;
FIG. 2 is a schematic radial view of a medical drill according to an embodiment of the present invention;
fig. 3 is an axial schematic view of a medical drill provided in an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic structural view of a medical drill provided by an embodiment of the present invention, fig. 2 is a radial schematic view of a medical drill provided by an embodiment of the present invention, and fig. 3 is an axial schematic view of a medical drill provided by an embodiment of the present invention, as shown in fig. 1 and fig. 2, including: the drill body 1 and the cutting blade 2 provided at one end of the drill body 1.
The cutting blade 2 comprises a curved blade line 21, and a feed surface 22 and a withdrawal surface 23 on two sides of the blade line 21, wherein the blade line 21 is connected with the central axis 11 of the drill bit body 1, and a plane where the blade line 21 is located is perpendicular to the central axis 11 of the drill bit body 1, after the medical drill bit rotates, the cutting blade 2 can drill a plane perpendicular to the central axis 11 of the drill bit body 1 on bones, and can be used as a working surface for drilling in the subsequent drilling process, so that the central axis of a cone drill bit used for drilling is perpendicular to the plane, and the swing of the cone drill bit caused by that the central axis of the cone drill bit is not perpendicular to a contact surface of an expected drilling position in the drilling process is avoided, and the drilling precision is improved.
Specifically, in this embodiment, the number of edges of the cutting blade 2 is equal to or greater than two. The specific number of the cutting edges may be selected according to the drilling requirements (e.g., diameter of the drill, hardness of bone at the drilled position, etc.), and the number of the cutting edges 2 is preferably any one of 3, 4, 5, and 6 (in fig. 1, the number of the cutting edges is exemplified by 6).
Further, as shown in fig. 2, the edge lines 21 are all in the same plane, i.e., the edge lines 21 of all the cutting edges 2 are in the same plane.
On the other hand, when the number of the cutting blades 2 is equal to or greater than two, the cutting blades 2 can be uniformly distributed around the central axis 11 of the drill body 1 because the rotation axis of the medical drill is the central axis of the drill body 1, as shown in fig. 3.
Fig. 3 is an axial schematic view of a medical drill according to an embodiment of the present invention, where the plane shown in the figure is the plane in which the edge line 21 of the cutting edge 2 is located. In fig. 3, six cutting blades are included, and the blade lines 21 of all the cutting blades intersect at a point on the central axis 11 of the drill body 1, that is, the blade lines 21 are connected with the central axis 11 of the drill body 1, and the six blade lines 21 are uniformly distributed around the intersection point, so as to improve the precision of the drilled plane.
Specifically, the feed surface 22 is parallel to the central axis 11 of the bit body 1, and it is also understood that the feed surface 22 is perpendicular to the plane in which the blade line 21 is located.
Specifically, since the plane of the cutting edge line 21 of the cutting edge 2 is perpendicular to the central axis 11 of the drill body 1, the medical drill provided by the present invention can drill a plane on a bone after rotation.
In the process of drilling the plane, the curved edge line 21 makes the cutting surface 22 and the retracting surface 23 of the cutting edge 2 also curved, so that the resistance when the chips are discharged can be reduced, and the smooth discharge of the bone chips along with the rotation of the medical drill can be facilitated. Further, the curve may be parabolic.
Specifically, in this embodiment, as shown in fig. 1, the medical drill further includes: the chip flute 3 is located between two adjacent cutting edges 2, the chip flute 3 being a recess between the feed surface 22 and the relief surface 23 of two adjacent cutting edges 2, while said chip flute 3 is capable of limiting the drilling depth.
When the medical drill rotates, bone fragments are discharged from the chip flute 3 along with the rotation of the medical drill, but when a drilled plane reaches a certain depth, the chip flute 3 completely enters a drill hole, and the medical drill provided by the embodiment does not have chip flutes connected with the chip flute 3, so that the bone fragments cannot be discharged from the chip flute 3, when the chip flute 3 is filled with the bone fragments, the cutting blade 2 cannot work continuously, and the medical drill is difficult to go deep again, so that the drill depth is limited in a safe range through the chip flute 3 directly without using a limiting device in the process of drilling by using the medical drill provided by the embodiment.
Specifically, in the present embodiment, the volume and depth of the chip pocket 3 may be changed by changing the shapes of the feed surface 22 and the relief surface 23, thereby changing the limit range of the drilling depth. Specifically, as shown in fig. 1 and 2, the feed surface 22 may be parallel to the central axis 11 of the drill body 1, and the relief surface 23 may be a curved surface. Further, as shown in fig. 2, the relief surface 23 may be a concave arc surface, so as to increase the volume of the chip flute 3, and increase the included angle between the relief surface 23 and the feed surface 22 of the adjacent cutting edge 2, so that the chip flute 3 of the medical drill can be conveniently cleaned and sterilized after the included angle is increased. Alternatively, the relief surface 23 may be an S-shaped curved surface, which increases the volume of the chip pocket 3, facilitates cleaning and aseptic processing of the chip pocket 3, and increases the strength of the cutting edge 2.
Specifically, as shown in fig. 1, in this embodiment, the medical drill may further include a guiding portion 4, where the guiding portion 4 is used to limit the drilling path of the medical drill.
The guide 4 may be provided on the bit body 1, and the diameter of the guide 4 may be larger than the diameter of the bit body 1. Alternatively, the guide 4 may be connected to the guide device via a clip groove or the like.
The guide 4 may have other shapes or sizes, or may be connected to the guide by other means, and the present embodiment is not limited herein.
In drilling bone during surgery, a plane may be drilled at the intended drilling location using the medical drill provided in this embodiment as a working surface, and then the prior art cone drill bit may be used to drill holes in the working surface.
Because a plane serving as a working surface is pre-drilled, the central axis of the cone drill bit can be perpendicular to the contact surface, so that the phenomenon that the central axis of the cone drill bit swings due to the fact that the central axis of the cone drill bit is not perpendicular to the contact surface during drilling is avoided, deviation between an actual drilling position and an expected drilling position is reduced, and drilling precision is improved.
The above-described apparatus embodiments are merely illustrative, wherein the units described as separate components may or may not be physically separate, and some or all of the modules may be selected according to actual needs to achieve the objectives of the embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A medical drill, comprising: the cutting blade comprises a curved blade line, a cutting feed surface and a cutting withdrawal surface which are arranged on two sides of the blade line, wherein the blade line is connected with the central axis of the drill body, and the plane of the blade line is perpendicular to the central axis of the drill body; further comprises: when the medical drill bit drills the bone, bone fragments fill the chip flutes because the medical drill bit does not have chip flutes connected with the chip flutes after the chip flutes completely enter the drill hole, so that the chip flutes can limit the drilling depth when the chip flutes are full of the chip flutes; the tool retracting surface is a concave cambered surface or an S-shaped cambered surface.
2. The medical drill according to claim 1, wherein the cutting blades have two or more blades.
3. The medical drill of claim 2, wherein the blade lines are all in the same plane.
4. The medical drill of claim 2, wherein the cutting blades are evenly distributed about a central axis of the drill body.
5. The medical drill according to any one of claims 1-4, wherein the curvilinear shape is parabolic.
6. The medical drill according to any one of claims 1-4, wherein the feed surface is parallel to a central axis of the drill body.
7. The medical drill according to any one of claims 1-4, wherein the cutting edge has any one of 3, 4, 5, and 6 edges.
8. The medical drill according to any one of claims 1-4, further comprising a guide for limiting the penetration path of the medical drill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710245107.6A CN106963449B (en) | 2017-04-14 | 2017-04-14 | Medical drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710245107.6A CN106963449B (en) | 2017-04-14 | 2017-04-14 | Medical drill bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106963449A CN106963449A (en) | 2017-07-21 |
| CN106963449B true CN106963449B (en) | 2024-03-01 |
Family
ID=59332612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710245107.6A Active CN106963449B (en) | 2017-04-14 | 2017-04-14 | Medical drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106963449B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5779399A (en) * | 1996-03-05 | 1998-07-14 | Mcdonnell Douglas | Rotary cutting apparatus |
| CN1953832A (en) * | 2004-05-28 | 2007-04-25 | 钴碳化钨硬质合金公司 | Drill, particularly a spiral drill |
| CN103328142A (en) * | 2011-02-16 | 2013-09-25 | 日立工具股份有限公司 | End mill for cutting of high-hardness materials |
| JP2014000642A (en) * | 2012-06-19 | 2014-01-09 | Nachi Fujikoshi Corp | Drill for countersinking |
| CN105108221A (en) * | 2014-04-10 | 2015-12-02 | Hanita金属制品有限公司 | Cutting tool with enhanced chip evacuation capability and method of making same |
| CN207679494U (en) * | 2017-04-14 | 2018-08-03 | 北京柏惠维康科技有限公司 | Medical bit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6991409B2 (en) * | 2002-12-24 | 2006-01-31 | Niagara Cutter | Rotary cutting tool |
| JP4313579B2 (en) * | 2003-01-22 | 2009-08-12 | オーエスジー株式会社 | Square end mill |
| US10118237B2 (en) * | 2014-01-07 | 2018-11-06 | Mitsubishi Electric Corporation | End mill and scroll for scroll compressor |
-
2017
- 2017-04-14 CN CN201710245107.6A patent/CN106963449B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5779399A (en) * | 1996-03-05 | 1998-07-14 | Mcdonnell Douglas | Rotary cutting apparatus |
| CN1953832A (en) * | 2004-05-28 | 2007-04-25 | 钴碳化钨硬质合金公司 | Drill, particularly a spiral drill |
| CN103328142A (en) * | 2011-02-16 | 2013-09-25 | 日立工具股份有限公司 | End mill for cutting of high-hardness materials |
| JP2014000642A (en) * | 2012-06-19 | 2014-01-09 | Nachi Fujikoshi Corp | Drill for countersinking |
| CN105108221A (en) * | 2014-04-10 | 2015-12-02 | Hanita金属制品有限公司 | Cutting tool with enhanced chip evacuation capability and method of making same |
| CN207679494U (en) * | 2017-04-14 | 2018-08-03 | 北京柏惠维康科技有限公司 | Medical bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106963449A (en) | 2017-07-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: An Yang Inventor after: Zhao Guoguang Inventor after: Shan Yongzhi Inventor after: Fan Xiaotong Inventor after: Xiao senxiong Inventor after: Xie Yongzhao Inventor after: Liu Da Inventor before: An Yang Inventor before: Zhao Guoguang Inventor before: Shan Yongzhi Inventor before: Fan Xiaotong Inventor before: Xiao senxiong Inventor before: Xie Yongzhao Inventor before: Liu Da |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 100191 Room 501, floor 5, building 9, No. 35 Huayuan North Road, Haidian District, Beijing Applicant after: Beijing Baihui Weikang Technology Co.,Ltd. Address before: Room 502, Building No. 3, Garden East Road, Haidian District, Beijing, 100191 Applicant before: Beijing Baihui Wei Kang Technology Co.,Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |