CN111407358B - Medical bone implant drill - Google Patents
Medical bone implant drill Download PDFInfo
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- CN111407358B CN111407358B CN202010231616.5A CN202010231616A CN111407358B CN 111407358 B CN111407358 B CN 111407358B CN 202010231616 A CN202010231616 A CN 202010231616A CN 111407358 B CN111407358 B CN 111407358B
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- drill bit
- drill
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- bit
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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
- A61B17/16—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
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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
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1622—Drill handpieces
- A61B17/1624—Drive mechanisms therefor
-
- 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
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- 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)
- Surgical Instruments (AREA)
Abstract
The invention discloses a medical bone implant drill bit which comprises a drill rod, a main drill bit connected to the head of the drill rod, a plurality of auxiliary drill bits connected to the head of the drill rod and surrounding the main drill bit, and a driving assembly connected to the drill rod, wherein the tail of each auxiliary drill bit is rotatably matched with the drill rod so that the head of each auxiliary drill bit can swing towards the direction close to or far away from the main drill bit, the driving assembly is used for driving the auxiliary drill rod to swing towards the side close to the main drill bit, and the head of the main drill bit exceeds the head of each auxiliary drill bit. According to the drill bit, the main drill bit is used for positioning in the initial stage of drilling, when the auxiliary drill bit reaches the surface of cortical bone, the auxiliary drill bits are used for forming complete positioning by being in contact with the cortical bone, the slipping phenomenon is avoided, the positioning accuracy of the drill bit is effectively improved, the damage of the drill bit to tissues or bones in a non-operation area due to slipping is greatly reduced, the bleeding problem of subcutaneous tissues due to slipping is avoided, and the surrounding of the auxiliary drill bit to bone fragments is facilitated, so that the bone fragments are taken out.
Description
Technical Field
The invention relates to the technical field of medical treatment, in particular to a medical bone implant drill bit.
Background
The current surgical drill for medical bone implants on the market is difficult to solve the problem that the drill slips caused by bleeding, the drill slips easily damage tissues in a non-surgical area, and the drill is difficult to position and even can cause the falling of a later implant. The invention also solves the slipping phenomenon, is favorable for positioning the drill bit, improves the drilling precision, and prevents the drill bit from slipping and damaging tissues beside.
Disclosure of Invention
In view of the above, the present invention provides a medical bone implant drill, which has a main drill and an auxiliary drill, is easy to position, effectively improves the slipping phenomenon of the drill, prevents the drill from slipping to damage tissues in a non-operative area, improves the positioning accuracy of drilling, facilitates the reliable attachment implantation of the implant, and improves the quality of the operation.
The medical bone implant drill bit comprises a drill rod, a main drill bit connected to the head of the drill rod, a plurality of auxiliary drill bits connected to the head of the drill rod and surrounding the main drill bit, and a driving assembly connected to the drill rod, wherein the tail of the auxiliary drill bit is in rotary fit with the drill rod so that the head of the auxiliary drill bit can swing towards the direction close to or far from the main drill bit, and the driving assembly is used for driving the auxiliary drill rod to swing towards the side close to the main drill bit, and the head of the main drill bit exceeds the head of the auxiliary drill bit.
Further, the driving assembly comprises a sliding part which is arranged on the head part of the drill rod in a manner of sliding along the length direction of the main drill bit and a connecting part which is connected between the sliding part and the auxiliary drill bit, when the sliding part slides towards the tail direction of the main drill bit, the auxiliary drill bit is pulled to swing towards the side close to the main drill bit by the connecting part, and the auxiliary drill bit surrounds the periphery of the sliding part.
Further, an annular chute is formed around the main drill bit on the head of the drill rod, and the sliding piece is a sliding sleeve which is slidably arranged in the annular chute.
Further, the connecting piece is a pull rod, and two ends of the pull rod are respectively hinged to the sliding sleeve and the inner wall of the auxiliary drill bit.
Further, the auxiliary drill bit is of a tile-shaped structure surrounding the circumference of the main drill bit, and the auxiliary drill bit head is provided with drill teeth.
Further, the sliding sleeve is connected with the bottom of the sliding groove through an elastic piece.
Further, the head of the drill rod is connected with a plurality of auxiliary drill bit installation seats corresponding to the auxiliary drill bits one by one, and the tail of the auxiliary drill bit is installed on the auxiliary drill bit installation seats in a rotating fit mode.
Further, the sleeve head extends radially inward to form a nip around the main bit.
Further, the auxiliary drills are approximately symmetrically distributed by taking the central axis of the main drill as the center.
The invention has the beneficial effects that:
the drill bit adopts the main drill bit to position in the initial stage of drilling, when the auxiliary drill bit reaches the surface of cortical bone, the auxiliary drill bit is in contact with the cortical bone to form complete positioning, so that the positioning precision of the drill bit is effectively improved, the reliable attachment implantation of an implant is facilitated, the operation quality is improved, the slipping phenomenon is avoided, the damage of the drill bit to tissues or bones in a non-operation area due to the sliding of the drill bit is greatly reduced, the bleeding problem of subcutaneous tissues due to slipping is avoided, and the surrounding of bone fragments by the auxiliary drill bit is facilitated, so that the bone fragments are taken out.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic side view of FIG. 1;
FIG. 3 is a schematic cross-sectional view;
FIG. 4 is a schematic view of a partial structure of the present invention;
Detailed Description
FIG. 1 is a schematic diagram of the structure of the present invention; FIG. 2 is a schematic side view of FIG. 1; FIG. 3 is a schematic cross-sectional view; FIG. 4 is a schematic view of a partial structure of the present invention;
as shown in the figure: the medical bone implant drill of the embodiment comprises a drill rod 1, a main drill bit 2 connected to the drill rod head, a plurality of auxiliary drill bits 3 connected to the drill rod head and surrounding the main drill bit, and a driving assembly connected to the drill rod, wherein the tail of the auxiliary drill bit is in rotary fit with the drill rod so that the auxiliary drill bit head can swing towards the direction close to or far away from the main drill bit, the driving assembly is used for driving the auxiliary drill rod to swing towards the side close to the main drill bit, and the main drill bit head exceeds the auxiliary drill bit. Referring to fig. 1, the drill rod is in a columnar structure, wherein the head of the drill rod is axially close to one end of the main drill bit, the tail of the drill rod is axially far away from one end of the main drill bit, and the directions of the head and the tail of the rest parts are consistent with the directions of the head and the tail of the drill rod; the main bit head exceeds the auxiliary bit head and means that the main bit head is exposed in the cavity surrounded by each auxiliary bit, namely, when drilling, the main bit is contacted with bone first, after the main bit drills into a certain depth, the auxiliary bit is contacted with the bone to secondarily expand the drilling, the part of the main bit, which exceeds the auxiliary bit, is not too long, so that the auxiliary bit can be contacted with the bone quickly after the main bit is positioned, bone fragments are accumulated in the space surrounded by each auxiliary bit in the reaming process, the auxiliary bit is driven to swing towards the main bit side at the moment, and the auxiliary bit completely wraps the bone fragments, thereby being beneficial to bringing the bone fragments out. The driving component can be electrically driven, for example, the swing of the auxiliary drill bit is controlled by a motor, or a mechanical driving mode is adopted, and the main drill bit is designed into a twist drill, so that the main drill bit is positioned accurately and conveniently for tapping, and bone fragments are discharged along the lines of the twist drill; the primary distance between the auxiliary drill bit and the main drill bit is ensured to be smaller, and in the reaming process of the auxiliary drill bit, bones between the main drill bit and the auxiliary drill bit are crushed along with the auxiliary drill bit, so that the auxiliary drill bit can swing inwards; according to the structure, the main drill bit is adopted for positioning at the initial stage of drilling, when the auxiliary drill bit reaches the surface of cortical bone, the auxiliary drill bits are used for forming complete positioning by being in contact with the cortical bone, the slipping phenomenon is avoided, the positioning accuracy of the drill bit is effectively improved, the damage to non-operation area tissues or bones caused by the sliding of the drill bit is greatly reduced, the bleeding problem of subcutaneous tissues caused by slipping is avoided, surrounding of bone fragments is realized through the auxiliary drill bit, and the taking out of bone fragments is facilitated.
In this embodiment, the driving assembly includes a slider slidably mounted on the drill rod head in a longitudinal direction of the main bit, and a connecting member connected between the slider and the auxiliary bit, and when the slider slides in a rear direction of the main bit, the auxiliary bit is pulled by the connecting member to swing toward a side closer to the main bit, and the auxiliary bit surrounds the slider. The sliding parts are arranged between the auxiliary drill bits, so that the auxiliary drill bits accumulate and squeeze the sliding parts between the auxiliary drill bits in the reaming process, the sliding parts swing towards the tail of the drill rod, at the moment, the sliding parts drive the connecting parts to operate and pull the auxiliary drill bits to swing towards the side close to the main drill bit, the connecting parts can be rigid connecting parts or elastic connecting parts, and the auxiliary drill bits are automatically closed by squeezing the bone fragments in the drilling process.
In this embodiment, the drill rod head is provided with an annular chute 4 around the main drill bit, and the sliding member is a sliding sleeve 5 slidably mounted in the annular chute. In combination with the illustration of fig. 3, the annular chute is formed such that a connecting column is formed in the middle of the annular chute, the main drill bit is detachably connected to the connecting column, the annular sliding sleeve surrounds the main drill bit, and the annular chute and the annular sliding sleeve are preferably coaxially arranged with the main drill bit, so that the stress of the whole drill bit is improved, and the stress concentration is avoided.
In this embodiment, the connecting piece is a pull rod 6, and two ends of the pull rod are respectively hinged on the sliding sleeve and the inner wall of the auxiliary drill bit. As shown in fig. 4, the outer end of the sliding sleeve is connected with a pull rod mounting seat, the tail of the pull rod is rotatably mounted on the mounting seat, and similarly, the mounting seat can be arranged on the inner wall of the auxiliary drill bit, so that the head of the pull rod is rotatably mounted on the mounting seat, and the hinged connection of the pull rod is the prior art and is not repeated in detail; the pull rod is favorable for forming rigid support for the auxiliary drill bit so as to ensure the stability of the closed or open state of the auxiliary drill bit.
In this embodiment, the secondary drill bit has a tile-shaped structure surrounding the circumference of the primary drill bit, and the secondary drill bit head is provided with drill teeth. The auxiliary drill bit with the structure is favorable for forming surrounding shapes to reliably lock bone fragments, and the drill teeth can be triangular or other relatively sharp tooth-shaped structures.
In this embodiment, the sliding sleeve is connected with the bottom of the sliding groove through an elastic piece 7. The elastic piece is a cylindrical bolt spring, and of course, the elastic piece can also be a disc spring or a wave spring, the sliding sleeve is facilitated to reset through the elastic piece, a limiting block 10 is arranged at the head position of the drill rod, and the limiting block leans against the back of the auxiliary drill bit to limit the outward swing of the auxiliary drill bit, so that when the auxiliary drill bit swings to the limit position outwards, the auxiliary drill bit is parallel to the main drill bit, and the reaming operation is facilitated.
In the embodiment, the head of the drill rod is connected with a plurality of auxiliary drill bit installation seats 8 which are in one-to-one correspondence with the auxiliary drill bits, and the tail of the auxiliary drill bit is installed on the auxiliary drill bit installation seats in a rotating fit manner. Three auxiliary drill bit mounting seats are symmetrically arranged at the center of the drill rod head, the matched drill rod head is connected with three auxiliary drill bits, and the number of the auxiliary drill bits and the auxiliary drill bit mounting seats can be adjusted according to actual use conditions. The auxiliary drill bit mounting seat is provided with the rotating shaft, the auxiliary drill bit is in running fit with the auxiliary drill bit mounting seat through the rotating shaft, the auxiliary drill bit mounting seat is beneficial to the mounting of the auxiliary drill bit, and meanwhile interference between the auxiliary drill bit and the drill rod can be avoided.
In this embodiment, the sleeve head extends radially inward to form a nip 5a around the main bit. With reference to fig. 3, on the premise of not affecting the installation of the drill bit, the diameter of the inner circle of the pressing part is preferably adapted to the diameter of the outer circle of the drill rod so as to protect the joint of the tail part of the drill rod, and meanwhile, the pressing force application of bone fragments to the sliding sleeve is facilitated, so that the sliding sleeve is driven to slide.
In this embodiment, the secondary drill bits are approximately symmetrically distributed with the central axis of the primary drill bit as the center. The approximate symmetrical distribution means that certain installation errors are allowed on the premise of symmetrical distribution, and the auxiliary drill bit is arranged in a central symmetry mode, so that stress in the drilling process is uniform, and drilling accuracy is improved.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (8)
1. A medical bone implant drill, characterized in that: the drill rod comprises a drill rod, a main drill bit connected to the head of the drill rod, a plurality of auxiliary drill bits connected to the head of the drill rod and surrounding the main drill bit, and a driving assembly connected to the drill rod, wherein the tail of the auxiliary drill bit is in rotary fit with the drill rod so that the head of the auxiliary drill bit can swing towards the direction close to or far away from the main drill bit, and the driving assembly is used for driving the auxiliary drill rod to swing towards the side close to the main drill bit and completely wrapping bone fragments so as to bring the bone fragments together; the main bit head exceeds the auxiliary bit head; the auxiliary drill bit is of a tile-shaped structure surrounding the circumference of the main drill bit, and drill teeth are arranged on the head of the auxiliary drill bit.
2. The medical bone implant drill according to claim 1, wherein: the driving assembly comprises a sliding part which is arranged on the head of the drill rod in a manner of sliding along the length direction of the main drill bit and a connecting part which is connected between the sliding part and the auxiliary drill bit, when the sliding part slides towards the tail direction of the main drill bit, the auxiliary drill bit is pulled to swing towards the side close to the main drill bit by the connecting part, and the auxiliary drill bit surrounds the periphery of the sliding part.
3. The medical bone implant drill according to claim 2, wherein: the drill rod head is provided with an annular chute around the main drill bit, and the sliding piece is a sliding sleeve which is slidably arranged in the annular chute.
4. A medical bone implant drill according to claim 3, wherein: the connecting piece is a pull rod, and two ends of the pull rod are respectively hinged on the sliding sleeve and the inner wall of the auxiliary drill bit.
5. A medical bone implant drill according to claim 3, wherein: the sliding sleeve is connected with the bottom of the sliding groove through an elastic piece.
6. The medical bone implant drill according to claim 1, wherein: the drill rod head is connected with a plurality of auxiliary drill bit mounting seats corresponding to the auxiliary drill bits one by one, and the tail parts of the auxiliary drill bits are mounted on the auxiliary drill bit mounting seats in a rotating fit manner.
7. A medical bone implant drill according to claim 3, wherein: the sleeve head extends radially inward to form a nip around the main bit.
8. The medical bone implant drill according to claim 1, wherein: the auxiliary drill bits are approximately symmetrically distributed by taking the central axis of the main drill bit as the center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010231616.5A CN111407358B (en) | 2020-03-27 | 2020-03-27 | Medical bone implant drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010231616.5A CN111407358B (en) | 2020-03-27 | 2020-03-27 | Medical bone implant drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111407358A CN111407358A (en) | 2020-07-14 |
| CN111407358B true CN111407358B (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010231616.5A Active CN111407358B (en) | 2020-03-27 | 2020-03-27 | Medical bone implant drill |
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| CN (1) | CN111407358B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108272518A (en) * | 2018-02-09 | 2018-07-13 | 广州市健齿生物科技有限公司 | A kind of dentistry implant operation drill bit with secondary drill bit |
| CN108433778A (en) * | 2018-04-28 | 2018-08-24 | 钛格斯医疗设备（重庆）有限公司 | A kind of disposable sterilized orthopaedics drill bit |
| AU2017203452A1 (en) * | 2012-08-31 | 2018-12-13 | Episurf Ip-Management Ab | Implant specific drill bit |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2112465U (en) * | 1992-01-14 | 1992-08-12 | 吴国梁 | Telescopic type composite drill |
| JP3916417B2 (en) * | 2001-06-08 | 2007-05-16 | 株式会社神戸製鋼所 | Bone drill and bone reamer |
| CN202336616U (en) * | 2011-09-30 | 2012-07-18 | 韩海民 | Hole expansion drill bit |
| TWM497011U (en) * | 2014-10-08 | 2015-03-11 | Qin Chuang Prec Tech Co Ltd | Autologous bone chip drilling collector for dental implant surgery |
| CN105822234B (en) * | 2016-05-03 | 2018-06-26 | 周兆弟 | For the drill rod assemblies for boring enlarged footing of stake machine |
| CN206722761U (en) * | 2017-05-16 | 2017-12-08 | 四川建筑职业技术学院 | The reaming drilling rod that a kind of front end can open manually |
| CN208040308U (en) * | 2018-01-19 | 2018-11-02 | 新疆北新路桥集团股份有限公司 | A kind of reaming bit and drilling machine |
| CN209687417U (en) * | 2019-03-29 | 2019-11-26 | 成都哈迈岩土钻掘设备厂 | A kind of New reaming bit head |
-
2020
- 2020-03-27 CN CN202010231616.5A patent/CN111407358B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2017203452A1 (en) * | 2012-08-31 | 2018-12-13 | Episurf Ip-Management Ab | Implant specific drill bit |
| CN108272518A (en) * | 2018-02-09 | 2018-07-13 | 广州市健齿生物科技有限公司 | A kind of dentistry implant operation drill bit with secondary drill bit |
| CN108433778A (en) * | 2018-04-28 | 2018-08-24 | 钛格斯医疗设备（重庆）有限公司 | A kind of disposable sterilized orthopaedics drill bit |
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| Publication number | Publication date |
|---|---|
| CN111407358A (en) | 2020-07-14 |
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