CN109965936B - Length-adjustable drill bit structure - Google Patents
Length-adjustable drill bit structure Download PDFInfo
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- CN109965936B CN109965936B CN201910255303.0A CN201910255303A CN109965936B CN 109965936 B CN109965936 B CN 109965936B CN 201910255303 A CN201910255303 A CN 201910255303A CN 109965936 B CN109965936 B CN 109965936B
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- drill bit
- telescopic rod
- main body
- blocking
- inner cavity
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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
- A61B17/1662—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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention provides a length-adjustable drill bit structure, comprising: the drill bit comprises a drill bit main body, a telescopic rod, a first matching structure, a second matching structure and an end cover; the telescopic rod can be inserted into the drill bit main body, and the drill bit main body is driven to rotate for drilling through the first matching structure; when deep holes need to be drilled, the operable telescopic rod moves outwards for a certain length to be connected with the drill bit main body no longer through the first matching structure, then is connected with the drill bit main body through the second matching structure, extends to a certain length, is extruded and fixed by the end cover, drives the telescopic rod to rotate and drill holes at the moment, and accordingly can drill holes in advance in the acetabulum with small or dysplastic space in the acetabulum, and further solves the problems that in the prior art, the operation is performed in the acetabular cup with small or dysplastic acetabulum, if long soft drill is used, the operation is difficult in the acetabular cup, and when short soft drill is used, the drilling depth is insufficient.
Description
Technical Field
The invention relates to a drill bit, in particular to a medical drill bit structure with adjustable length.
Background
The total hip arthroplasty relieves the pain of many patients with hip joint diseases, improves the functions of the hip joints and improves the life quality of the patients. For patients with severe osteoporosis and patients with poor acetabular coverage, in order to increase the initial stability of the acetabulum, it is often necessary to drive in acetabular screws, which require pre-drilling holes in the acetabular cup prior to driving in the acetabular screw. In some patients, the acetabulum is small in development or poor in development, the acetabular cup needs to be drilled in advance by using an acetabular screw with the diameter of less than 44mm, if a long soft drill is used, the operation in the acetabular cup is difficult, and when a short soft drill is used, the drilling depth is insufficient.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that when the screw is used for pre-drilling in the acetabulum with small or bad acetabulum development, if a long soft drill is used, the operation in the acetabular cup is difficult, and when a short soft drill is used, the technical defect of insufficient drilling depth exists, so that the medical drill with adjustable length is provided, and the drilling operation is convenient.
To this end, the invention provides a medical drill of adjustable length comprising:
the drill bit body is provided with an inner cavity with an opening at one end in the middle, and drilling threads are arranged on the outer wall of the drill bit body;
a telescopic rod telescopically installed in the inner cavity along the axial direction of the drill bit main body;
the first matching structure is arranged at the end part of the telescopic rod, which is used for being inserted into one end of the inner cavity, and the inside of one side, far away from the opening, of the inner cavity; the telescopic rod drives the drill bit main body to rotate through the first matching structure;
the second matching structure is arranged between the outer wall of the telescopic rod and the inner wall of the inner cavity; after the telescopic rod moves outwards for a certain length and is not connected with the drill bit main body through the first matching structure, the telescopic rod stretches in the inner cavity through the second matching structure, so that the length of the drill bit structure is changed;
the end cover is buckled and installed on the drill bit main body and used for covering the inner cavity and preventing the telescopic rod from sliding out of the inner cavity; after the telescopic rod is outwards extended for a set length, the telescopic rod can be extruded and fixed by the end cover to be fixedly connected with the drill bit main body.
As a preferred aspect, the first mating structure includes:
the first blocking piece is at least one and is arranged on the outer wall of the end part of the telescopic rod;
at least one second blocking piece is arranged on the inner wall of the inner cavity;
when the telescopic rod is inserted into the inner cavity to set depth, the first blocking piece and the second blocking piece are located at the same height, and when the telescopic rod is forced to rotate, the drill bit main body can be driven to rotate to drill holes through the first blocking piece and the second blocking piece.
As a preferred embodiment, the first blocking element has a first blocking surface and the second blocking element has a second blocking surface;
when the telescopic rod is stressed to rotate, the first blocking surface of the first blocking piece is contacted with the second blocking surface of the second blocking piece, so that the drill bit body is driven to rotate to drill holes.
As a preferable scheme, the first blocking surface and the second blocking surface are both planes, when the first blocking surface is contacted with the second blocking surface, the telescopic rod is drawn outwards, the first blocking surface can slide to be completely separated relative to the second blocking surface, and at the moment, the telescopic rod is rotated to no longer drive the drill bit body to rotate.
As a preferred solution, a side of the second blocking member opposite to the second blocking surface is provided with a step structure capable of accommodating the first blocking member;
when the first blocking piece reversely rotates to enter the step structure, the drill bit main body can be pulled out by pulling the telescopic rod.
As a variation, the second mating structure includes:
the first rotary screw thread is arranged on the outer wall of the telescopic rod;
the second rotary thread is arranged on the inner wall of the inner cavity;
when the telescopic rod is connected with the drill bit main body through the first matching structure, the first rotary thread is not contacted with the second rotary thread;
the telescopic rod is pulled out to a certain length, and after the telescopic rod is not connected with the drill bit main body through the first matching structure, the first rotary thread is contacted with the second rotary thread and can be matched and screwed;
driving the telescopic rod to rotate so that the first rotary screw thread is matched with the second rotary screw thread, and further enabling the telescopic rod to extend outwards in the same rotation direction as that of driving the telescopic rod to drive the drill bit main body to rotate and drill holes;
the first rotary thread has an outer diameter greater than an inner diameter of the open end of the end cap.
Preferably, the end cap comprises an end cap body and an annular flange formed on an inner wall of one end of the end cap body.
As a preferable scheme, the inner wall of the end cover main body is provided with an internal thread, the outer wall of the end part of the drill bit main body with an inner cavity opening is provided with an external thread, and the end cover main body is in threaded connection with the external thread through the internal thread, so that the drill bit main body is fixedly installed.
The technical scheme of the invention has the following advantages:
1. according to the length-adjustable drill bit structure, the telescopic rod can be inserted into the drill bit main body, and the drill bit main body is driven to drill holes in a rotating mode through the first matching structure; when a deeper hole needs to be drilled, the operable telescopic rod moves outwards for a certain length to be connected with the drill bit main body without the first matching structure, then is connected with the drill bit main body through the second matching structure, is extruded and fixed by the end cover after extending to a certain length, drives the telescopic rod to rotate at the moment, and drives the drill bit main body to rotate and drill holes through the matching of the second matching structure and the end cover, so that the operation of pre-drilling deeper acetabular screws can be performed in the acetabulum with small or ill-developed space, the problem that in the prior art, the operation in the acetabular cup with small or ill-developed acetabulum is difficult, if long soft drill is used, the operation in the acetabular cup is difficult, and when short soft drill is used, the drilling depth is insufficient is also existed.
2. According to the length-adjustable drill bit structure, the first matching structure is composed of the first blocking piece arranged on the outer wall of the end part of the telescopic rod and the second blocking piece arranged on the inner wall of the inner cavity, when the telescopic rod is stressed to rotate, the drill bit main body can be driven to rotate to drill holes through the first blocking piece and the second blocking piece, and the driving mode is simple and convenient.
3. According to the length-adjustable drill bit structure, the first blocking surface and the second blocking surface are plane, the telescopic rod is drawn outwards, and the first blocking surface can slide to be completely separated relative to the second blocking surface, so that the first blocking surface and the second blocking surface are separated simply and quickly.
4. According to the length-adjustable drill bit structure, one side of the second blocking piece opposite to the second blocking surface is provided with the step structure capable of accommodating the first blocking piece, when the first blocking piece reversely rotates to enter the step structure, the telescopic rod is pulled outwards, the drill bit main body can be pulled out, and when the drill bit exits outwards and encounters resistance, the drill bit main body is driven by the telescopic rod, and the drill bit main body can be pulled out easily.
5. According to the length-adjustable drill bit structure, the first rotary threads and the second rotary threads of the second matching structure are matched, the rotation direction of the telescopic rod extending outwards is the same as the rotation direction of driving the telescopic rod to drive the drill bit main body to rotate and drill holes, the situation that the drill bit main body is driven to reversely rotate out when the telescopic rod is driven to extend outwards can be avoided, and the screw thread structure is arranged, so that the acting force for driving the drill bit main body to drill holes inwards can be always kept in the process of extending outwards.
6. According to the length-adjustable drill bit structure, the annular flange of the end cover can be combined with the second matching structure, the telescopic rod is fixedly connected with the drill bit body in a pressing mode, the telescopic rod is prevented from sliding off the inner cavity, and the drill bit body is driven to rotate through rotation of the telescopic rod.
7. According to the length-adjustable drill bit structure, the end cover main body is in threaded connection with the external threads of the drill bit main body through the internal threads, and the fixing mode is firm and convenient.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below.
Fig. 1 is a cross-sectional view of a bit body of the adjustable length drill bit structure of the present invention.
Fig. 2 is a perspective view of the telescopic rod.
Fig. 3 is a perspective view of the end cap.
Reference numerals: 1. a bit body; 2. an inner cavity; 3. a telescopic rod; 4. an end cap; 41. an end cap body; 42. an annular flange; 5. a first blocking member; 6. a second blocking member; 7. a first blocking surface; 8. a second blocking surface; 9. a step structure; 10. a first rotary thread; 11. and a second rotating thread.
Detailed Description
The technical scheme of the invention is described in detail below with reference to the attached drawings.
Examples
The present embodiment provides a length-adjustable drill bit structure, as shown in fig. 1-3, comprising: the drill bit body 1 is provided with an inner cavity 2 with one end open at the middle part, drilling threads are arranged on the outer wall; a telescopic rod 3 telescopically installed in the inner cavity 2 along the axial direction of the drill bit body 1; the first matching structure is arranged at the end part of the telescopic rod 3, which is used for being inserted into one end of the inner cavity 2, and the inner part of the inner cavity 2, which is far away from the opening side; the telescopic rod 3 drives the drill bit main body 1 to rotate through the first matching structure; the second matching structure is arranged between the outer wall of the telescopic rod 3 and the inner wall of the inner cavity 2; after the telescopic rod 3 moves outwards to a certain length and is no longer connected with the drill bit main body 1 through the first matching structure, the telescopic rod 3 stretches in the inner cavity 2 through the second matching structure, so that the length of the drill bit structure is changed; the end cover 4 is buckled and installed on the drill bit main body 1 and is used for covering the inner cavity 2 and preventing the telescopic rod 3 from sliding out of the inner cavity 2; after the telescopic rod 3 is extended outwards for a set length, the telescopic rod can be pressed and fixed by the end cover 4 to be fixedly connected with the drill bit body 1.
According to the length-adjustable drill bit structure, the telescopic rod 3 is driven to move back and forth in the inner cavity 2 of the drill bit main body 1, so that the length adjustment of the drill bit can be realized, and the problems that in hip joint replacement surgery, when an acetabular screw is drilled in advance, a soft drill is too long and difficult to operate or the depth of too short drill hole is insufficient are solved.
As shown in fig. 1 and 2, the first mating structure includes: a first blocking member 5, at least one, is provided on an outer wall of an end portion of the telescopic rod 3; a second blocking member 6, at least one, is provided on the inner wall of the inner chamber 2; when the telescopic rod 3 is inserted into the inner cavity 2 to a set depth, the first blocking piece 5 and the second blocking piece 6 are positioned at the same height, and at the moment, when the telescopic rod 3 is forced to rotate, the drill bit main body 1 can be driven to rotate for drilling through the first blocking piece 5 and the second blocking piece 6.
The first blocking member 5 has a first blocking surface 7 and the second blocking member 6 has a second blocking surface 8; when the telescopic rod 3 is stressed to rotate, the first blocking surface 7 of the first blocking piece 5 is contacted with the second blocking surface 8 of the second blocking piece 6, so that the drill bit body 1 is driven to rotate for drilling. The drill bit body 1 is driven to rotate for drilling by the first blocking piece 5 and the second blocking piece 6, and the driving mode is simple and convenient.
In the length-adjustable drill bit structure of this embodiment, the first blocking surface 7 and the second blocking surface 8 are both planes, when the first blocking surface 7 contacts with the second blocking surface 8, the telescopic rod 3 is drawn outwards, the first blocking surface 7 can slide relative to the second blocking surface 8 to be completely separated, and at this time, the telescopic rod 3 is not driven to rotate any more by rotating the drill bit body 1. The first blocking surface 7 and the second blocking surface 8 are both planes, and the telescopic rod 3 is outwards drawn, so that the first blocking surface 7 can slide to be completely separated relative to the second blocking surface 8, and the separation mode is simple and quick.
It is further preferred that a step 9 is provided on the side of the second blocking element 6 opposite the second blocking surface 8, which is able to accommodate the first blocking element 5; when the first blocking member 5 is reversely rotated to enter the inside of the stepped structure 9, the bit body 1 can be withdrawn by pulling the telescopic rod 3. This setting makes the drill bit when the resistance is met in outside withdrawal, drives bit body 1 through telescopic link 3, can overcome the resistance comparatively easily to take bit body 1 out.
The length-adjustable drill bit structure of this embodiment, the second cooperation structure specifically includes: the first rotary thread 10 is arranged on the outer wall of the telescopic rod 3; the second rotary thread 11 is arranged on the inner wall of the inner cavity 2; when the telescopic rod 3 is connected with the drill bit body 1 through the first matching structure, the first rotary thread 10 is not contacted with the second rotary thread 11; the telescopic rod 3 is drawn out to a certain length, and after the telescopic rod is not connected with the drill bit main body 1 through the first matching structure, the first rotary thread 10 is contacted with the second rotary thread 11 and can be matched and screwed; driving the telescopic rod 3 to rotate so that the first rotary thread 10 is matched with the second rotary thread 11, and further enabling the telescopic rod 3 to extend outwards in the same rotation direction as that of driving the telescopic rod 3 and further driving the drill bit body 1 to rotate and drill holes; the first rotary thread 10 has an outer diameter greater than the inner diameter of the open end of the end cap 4.
The first rotary thread 10 of the second matching structure is matched with the second rotary thread 11, the rotation direction of the telescopic rod 3 extending outwards is the same as that of the telescopic rod 3 and further the drill bit main body 1, when the telescopic rod 3 is driven to extend outwards in a rotating mode, the drill bit main body 1 is driven to rotate reversely, and the telescopic rod 3 can always keep acting force for driving the drill bit main body 1 to drill inwards in the process of extending outwards in a rotating mode due to the arrangement of the thread structure.
The length-adjustable drill bit structure of the present embodiment, the end cap 4 includes an end cap body 41, and an annular flange 42 formed on an inner wall of one end of the end cap body 41. The annular flange 42 can be combined with a second mating structure to press and fix the telescopic rod 3 to be fixedly connected with the drill bit body 1, prevent the telescopic rod 3 from slipping out of the inner cavity 20, and drive the drill bit body 1 to rotate through rotation of the telescopic rod 3.
The inner wall of the end cover main body 41 is provided with an internal thread, the outer wall of the end part of the drill bit main body 1 with an inner cavity opening is provided with an external thread, and the end cover main body 41 is in threaded connection with the external thread through the internal thread, so that the drill bit main body 1 is fixedly installed. The end cover main body is in threaded connection with the external thread of the drill bit main body through the internal thread, and the fixing mode is firm and convenient
The working principle of the length-adjustable drill bit structure of the embodiment is as follows:
when the depth of a hole to be drilled is shallow, an extension mechanism is not required to be started through the telescopic rod 3, the telescopic rod 3 is directly inserted into the bottom end of the drill bit main body 1 and is connected with the drill bit main body 1 through a first matching structure, and after an electric drill is started, the electric drill drives the telescopic rod 3 to drive the drill bit main body 1 to rotate through the first matching structure, so that shallow drilling is completed;
when the depth of the hole to be drilled is deeper, after the operation is finished, the electric drill is stopped, the telescopic rod 3 is retracted, the electric drill is started continuously until the telescopic rod 3 is not connected with the drill body 1 through the first matching structure, the telescopic rod 3 is matched with the second rotating thread 11 on the drill body through the first rotating thread 10 of the second matching structure, the telescopic rod 3 is enabled to extend outwards in a rotating mode, the length of the drill bit is gradually increased until the length reaches the end cover 4, the end cover 4 extrudes and fixes the telescopic rod 3 to be fixedly connected with the drill body 1, and at the moment, the electric drill drives the telescopic rod 3 to directly drive the drill body 1 to rotate, so that deeper drilling is finished.
When the drill bit is withdrawn, the drill bit reversely rotates, the drill bit main body 1 automatically shortens, then the drill bit main body 1 is slightly fixed, and the telescopic rod 3 is pulled out when the telescopic rod 3 advances into the step structure 9, so that the drill bit main body 1 can be pulled out.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (8)
1. A length-adjustable drill bit structure, its characterized in that: comprising the following steps:
the drill bit comprises a drill bit main body (1), wherein an inner cavity (2) with one end open is formed in the middle of the drill bit main body, and drilling threads are formed in the outer wall of the drill bit main body;
a telescopic rod (3) which is telescopically arranged in the inner cavity (2) along the axial direction of the drill bit main body (1);
the first matching structure is arranged at the end part of the telescopic rod (3) which is used for being inserted into one end of the inner cavity (2) and the inside of one side of the inner cavity (2) far away from the opening; the telescopic rod (3) drives the drill bit main body (1) to rotate through the first matching structure;
the second matching structure is arranged between the outer wall of the telescopic rod (3) and the inner wall of the inner cavity (2); after the telescopic rod (3) moves outwards for a certain length and is not connected with the drill bit main body (1) through the first matching structure, the telescopic rod (3) stretches in the inner cavity (2) through the second matching structure, so that the length of the drill bit structure is changed;
the end cover (4) is buckled on the drill bit main body (1) and is used for covering the inner cavity (2) and preventing the telescopic rod (3) from sliding out of the inner cavity (2); after the telescopic rod (3) is outwards stretched for a set length, the telescopic rod can be fixedly extruded by the end cover (4) to be fixedly connected with the drill bit main body (1).
2. The drill bit structure of claim 1, wherein: the first mating structure includes:
at least one first blocking piece (5) is arranged on the outer wall of the end part of the telescopic rod (3);
-at least one second blocking member (6) arranged on the inner wall of said inner cavity (2);
when the telescopic rod (3) is inserted into the inner cavity (2) to a set depth, the first blocking piece (5) and the second blocking piece (6) are positioned at the same height, and at the moment, when the telescopic rod (3) is stressed to rotate, the drill bit main body (1) is driven to rotate for drilling through the first blocking piece (5) and the second blocking piece (6).
3. The drill bit structure of claim 2, wherein: the first blocking element (5) has a first blocking surface (7), and the second blocking element (6) has a second blocking surface (8);
when the telescopic rod (3) is stressed to rotate, the first blocking surface (7) of the first blocking piece (5) is contacted with the second blocking surface (8) of the second blocking piece (6), so that the drill bit main body (1) is driven to rotate for drilling.
4. A drill bit structure according to claim 3, wherein: the first blocking surface (7) and the second blocking surface (8) are both planes, when the first blocking surface (7) is in contact with the second blocking surface (8), the telescopic rod (3) is drawn outwards, the first blocking surface (7) can slide to be completely separated relative to the second blocking surface (8), and at the moment, the telescopic rod (3) is not driven to rotate any more when being rotated.
5. The drill bit structure of claim 3 or 4, wherein: a step structure (9) capable of accommodating the first blocking piece (5) is arranged on one side of the second blocking piece (6) opposite to the second blocking surface (8);
when the first blocking piece (5) reversely rotates to enter the step structure (9), the drill bit main body (1) can be pulled out by pulling the telescopic rod (3).
6. The drill bit structure of claim 1, wherein: the second mating structure includes:
the first rotary thread (10) is arranged on the outer wall of the telescopic rod (3);
the second rotary thread (11) is arranged on the inner wall of the inner cavity (2);
when the telescopic rod (3) is connected with the drill bit main body (1) through the first matching structure, the first rotary thread (10) is not contacted with the second rotary thread (11);
the telescopic rod (3) is pulled out to a certain length, and after the telescopic rod is not connected with the drill bit main body (1) through the first matching structure any more, the first rotary thread (10) is contacted with the second rotary thread (11) and can be matched and screwed;
driving the telescopic rod (3) to rotate so that the first rotary screw thread (10) is matched with the second rotary screw thread (11), and further enabling the telescopic rod (3) to extend outwards in the same rotation direction as that of driving the telescopic rod (3) and further driving the drill bit main body (1) to rotate and drill holes;
the outer diameter of the first rotary thread (10) is larger than the inner diameter of the opening end of the end cover (4).
7. The drill bit structure of claim 1, wherein: the end cap (4) comprises an end cap body (41), and an annular flange (42) formed on an inner wall of one end of the end cap body (41).
8. The drill bit structure of claim 7, wherein: the inner wall of the end cover main body (41) is provided with an internal thread, the outer wall of the end part of the drill bit main body (1) with the inner cavity opening is provided with an external thread, and the end cover main body (41) is in threaded connection with the external thread through the internal thread, so that the drill bit main body (1) is fixedly installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910255303.0A CN109965936B (en) | 2019-04-01 | 2019-04-01 | Length-adjustable drill bit structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910255303.0A CN109965936B (en) | 2019-04-01 | 2019-04-01 | Length-adjustable drill bit structure |
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| Publication Number | Publication Date |
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| CN109965936A CN109965936A (en) | 2019-07-05 |
| CN109965936B true CN109965936B (en) | 2023-06-27 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1728969A (en) * | 2002-11-13 | 2006-02-01 | 拉尔夫·F·兹沃曼 | Adjustable length tap and method for drilling and tapping a bore in bone |
| CN1984610A (en) * | 2004-03-30 | 2007-06-20 | 新特斯(美国)公司 | Adjustable depth drill bit |
| JP2012010758A (en) * | 2010-06-29 | 2012-01-19 | Japan Medical Materials Corp | Boring drill and drill system |
| CN202604948U (en) * | 2012-05-25 | 2012-12-19 | 罗世兴 | Adjustable-length bone surgery drill bush |
| CN105342662A (en) * | 2015-09-30 | 2016-02-24 | 张英泽 | Adjustable limit safety drilling device for orthopedic department |
| CN109350271A (en) * | 2018-11-27 | 2019-02-19 | 尹文婷 | A kind of inverted cone bur for teeth restoration |
| CN210130889U (en) * | 2019-04-01 | 2020-03-10 | 山东大学齐鲁医院(青岛) | Medical drill bit structure |
-
2019
- 2019-04-01 CN CN201910255303.0A patent/CN109965936B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1728969A (en) * | 2002-11-13 | 2006-02-01 | 拉尔夫·F·兹沃曼 | Adjustable length tap and method for drilling and tapping a bore in bone |
| CN1984610A (en) * | 2004-03-30 | 2007-06-20 | 新特斯(美国)公司 | Adjustable depth drill bit |
| JP2012010758A (en) * | 2010-06-29 | 2012-01-19 | Japan Medical Materials Corp | Boring drill and drill system |
| CN202604948U (en) * | 2012-05-25 | 2012-12-19 | 罗世兴 | Adjustable-length bone surgery drill bush |
| CN105342662A (en) * | 2015-09-30 | 2016-02-24 | 张英泽 | Adjustable limit safety drilling device for orthopedic department |
| CN109350271A (en) * | 2018-11-27 | 2019-02-19 | 尹文婷 | A kind of inverted cone bur for teeth restoration |
| CN210130889U (en) * | 2019-04-01 | 2020-03-10 | 山东大学齐鲁医院(青岛) | Medical drill bit structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109965936A (en) | 2019-07-05 |
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