CN108113731B - Bone nail countersink drill for orthopedics - Google Patents
Bone nail countersink drill for orthopedics Download PDFInfo
- Publication number
- CN108113731B CN108113731B CN201711469748.6A CN201711469748A CN108113731B CN 108113731 B CN108113731 B CN 108113731B CN 201711469748 A CN201711469748 A CN 201711469748A CN 108113731 B CN108113731 B CN 108113731B
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- fixedly connected
- bearing
- rack
- spring
- rod
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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
-
- 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
-
- 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
- A61B17/1655—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for tapping
Abstract
The invention relates to medical equipment, in particular to an orthopedic bone nail countersink drill, which comprises a bearing mounting seat and a bearing, wherein the bearing is fixedly connected in the bearing mounting seat, a rotating shaft is fixedly connected to the inner ring of the bearing, the rotating shaft penetrates through the bearing mounting seat, a bone nail countersink drill bit is fixedly connected to the outer end of the rotating shaft, a gear is fixedly connected to the inner end of the rotating shaft, two rotating rod fixing pieces are vertically and fixedly connected to the upper end of the bearing mounting seat, a rotating rod is movably connected between the two rotating rod fixing pieces through a movable shaft, a rectangular rack fixing hole is formed in the middle of the rotating rod in a penetrating mode, and a rack is movably connected in the rack fixing hole through a pin shaft. The drilling machine has the advantages of scientific and reasonable structure, simple and convenient operation and control, high drilling efficiency and good drilling quality, reduces the time of the orthopedic surgery, improves the technical level of the orthopedic surgery, and is suitable for popularization and use.
Description
Technical Field
The invention relates to medical equipment, in particular to an orthopedic bone nail countersink drill.
Background
In the bone surgery, sometimes a bone nail needs to be drilled on the bone of a patient, a countersink of the bone nail needs to be drilled on the outer end head of the bone nail hole, the big head at the upper end of the bone nail is conveniently embedded in the bone, because a drill bit for drilling the countersink of the bone nail is in a special-shaped slope shape and has a larger diameter, when the electric bone drill is used for operation, the electric bone drill is very difficult to control, the rotating speed of the electric bone drill is very high, the volume is large, the electric bone drill is easy to deviate or bore the countersink of the bone nail, which can cause irreparable damage to the bone of the patient due to the fact that the electric bone drill is not easy to control, so that the hand bone nail countersink drill which is still used in the bone surgery at present is used, the whole hand nail countersink drill is rotated by a handle, the countersink drill is drilled by using a countersink drill bit at the bottom end of the hand nail countersink, although the efficiency is low, and the countersink of the hand nail is not very standard, the bone screw countersink drill is easy to control, the problem that the bone screw countersink is too large or too much deflected can not occur, however, the manual efficiency is too low after the use, the operation time is too long, the pain of a patient is increased, the drilled bone screw countersink is not very standard, an operating doctor of an orthopedic operation and a technician of a medical instrument always seek a better tool, and the medical instrument which solves the problem does not exist in China at present, so that the bone screw countersink drill for the orthopedics department is provided.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an orthopedic bone nail countersink drill, which solves the problem of drilling a bone nail countersink in the existing orthopedic surgery.
In order to solve the technical problems, the invention provides the following technical scheme: a bone nail countersink drill for orthopedics comprises a bearing mounting seat and a bearing, wherein the bearing is fixedly connected in the bearing mounting seat, a rotating shaft is fixedly connected to the inner ring of the bearing, the rotating shaft penetrates through the bearing mounting seat, a bone nail countersink drill bit is fixedly connected to the outer end of the rotating shaft, a gear is fixedly connected to the inner end of the rotating shaft, two rotating rod fixing pieces are vertically and fixedly connected to the upper end of the bearing mounting seat, a rotating rod is movably connected between the two rotating rod fixing pieces through a movable shaft, a rectangular rack fixing hole is formed in the middle of the rotating rod in a penetrating mode, a rack is movably connected in the rack fixing hole through a pin shaft, two ends of the pin shaft are movably connected in pin shaft positioning holes in the front side wall and the rear side wall of the rack fixing hole, the pin shaft positioning holes are strip, the recess bottom is equipped with the teeth of a cogwheel, the gear activity sets up in the recess to the gear is in the same place with teeth of a cogwheel intermeshing, the lower extreme of rack runs through the backup pad to the overhead fixedly connected with separation blade of lower part outer end of rack, the right-hand member fixedly connected with handle bar of backup pad, handle bar upper end middle part fixedly connected with spring retaining shell, install the spring in the hole of spring retaining shell, the upper end department of spring is equipped with the spring compression pole, the upper end fixed connection of spring compression pole is on the rotary rod, the lower extreme setting of spring compression pole is in the hole of spring retaining shell to compress tightly the spring, the overhead fixedly connected with handle cover of handle bar outer end, the outside of gear is equipped with the guard shield, guard shield fixed connection is in the backup pad.
Furthermore, the bearing is provided with two, two bearings are fixedly installed in the bearing installation seat side by side, the upper end of the inner side of the bearing installation seat is fixedly connected with a pressing sheet through a bolt, the outer ring of the bearing is tightly pressed in the bearing installation seat through the pressing sheet, the outer ring of the left side of the rotating shaft is connected with a locking ring through threads, and the locking ring is tightly pressed on the vertical surface of the inner ring side of the bearing.
Furthermore, the bone nail countersunk head drill is in threaded connection with the rotating shaft.
Furthermore, the pin shaft is in sliding fit with the pin shaft positioning hole.
Further, the rack is in sliding fit with the rack fixing hole, and a gap is formed between the rack and the supporting plate.
Furthermore, the outer side of the right end of the rotating rod is provided with an arc groove.
Furthermore, the spring fixing shell and the spring compression rod are respectively in the shape of circular arcs matched with each other, the circle centers of the circular arcs coincide with the circle center of the movable shaft, and the spring compression rod is in sliding fit with the inner hole of the spring fixing shell.
Further, the handle sleeve is made of rubber materials.
Compared with the prior art, the invention has the beneficial effects that: the invention provides an orthopedic bone screw countersinking drill, which can replace the existing hand-held bone screw countersinking drill, help orthopedic surgeons to quickly and conveniently drill out bone screw countersinks, is convenient to control in the operation process, has high drilling efficiency, reduces the pain of patients in the operation, has very standard drilled bone screw countersinks, improves the drilling quality of the bone screw countersinks, greatly facilitates the operation of medical staff, and has breakthrough contribution to drilling and taking tools of the bone screw countersinks.
Drawings
FIG. 1 is a schematic structural view of an orthopedic bone screw countersink drill according to the present invention;
FIG. 2 is a top view of the upper end of an orthopedic bone screw countersink of the present invention;
FIG. 3 is a bottom view of the bone screw countersink for orthopedics according to the present invention;
FIG. 4 is a schematic structural view of a hand held bone screw countersink drill currently in use;
FIG. 5 is a schematic view of the configuration of a bone pin hole and a bone pin counter bore in a bone;
fig. 6 is a schematic structural view of the bone screw countersink drill for orthopedics according to the present invention in a state of drilling a bone screw countersink.
The reference numbers in the figures are: 1-bearing mounting seat, 2-bearing, 3-rotating shaft, 4-bone nail countersunk head drill, 5-gear, 6-movable shaft, 7-rotating rod fixing piece, 8-rotating rod, 801-rack fixing hole, 802-pin shaft positioning hole, 803-circular arc groove, 9-pin shaft, 10-rack, 1001-groove, 1002-gear tooth, 1003-baffle plate, 11-supporting plate, 12-handle rod, 13-spring fixing shell, 14-spring, 15-spring compression rod, 16-handle sleeve, 17-shield, 18-pressing piece, 19-locking ring, 20-hand bone nail countersunk head drill, 21-bone, 2101-bone nail hole and 2102-bone nail.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 to 6, it can be known that: a bone nail countersink drill for orthopedics comprises a bearing mounting seat 1 and a bearing 2, wherein the bearing 2 is fixedly connected in the bearing mounting seat 1, a rotating shaft 3 is fixedly connected to the inner ring of the bearing 2, the rotating shaft 3 penetrates through the bearing mounting seat 1, a bone nail countersink drill bit 4 is fixedly connected to the outer end of the rotating shaft 3, a gear 5 is fixedly connected to the inner end of the rotating shaft 3, two rotary rod fixing pieces 7 are vertically and fixedly connected to the upper end of the bearing mounting seat 1, a rotary rod 8 is movably connected between the two rotary rod fixing pieces 7 through a movable shaft 6, a rectangular rack fixing hole 801 penetrates through the middle of the rotary rod 8, a rack 10 is movably connected in the rack fixing hole 801 through a pin shaft 9, two ends of the pin shaft 9 are movably connected in pin shaft positioning holes 802 on the front side wall and the rear side wall of the rack fixing hole 801, the pin, a rectangular groove 1001 is formed in the side vertical surface of the rack 10 corresponding to the gear 5, gear teeth 1002 are arranged at the bottom end of the groove 1001, the gear 5 is movably arranged in the groove 1001, the gear 5 and the gear teeth 1002 are meshed together, the lower end of the rack 10 penetrates through the support plate 11, a blocking piece 1003 is fixedly connected to the outer end head of the lower portion of the rack 10, a handle rod 12 is fixedly connected to the right end of the support plate 11, a spring fixing shell 13 is fixedly connected to the middle portion of the upper end of the handle rod 12, a spring 14 is installed in an inner hole of the spring fixing shell 13, a spring compression rod 15 is arranged at the upper end head of the spring 14, the upper end of the spring compression rod 15 is fixedly connected to the rotating rod 8, the lower end of the spring compression rod 15 is arranged in the inner hole of the spring fixing shell 13 and compresses the spring 14, and a handle sleeve 16 is fixedly connected, a protective cover 17 is arranged outside the gear 5, and the protective cover 17 is fixedly connected to the supporting plate 11.
The two bearings 2 are arranged, the two bearings 2 are fixedly arranged in the bearing mounting seat 1 side by side, the two bearings 2 can ensure that the rotating shaft 3 can rotate stably, the upper end of the inner side of the bearing mounting seat 1 is fixedly connected with a pressing sheet 18 through a bolt, the outer ring of the bearing 2 is pressed in the bearing mounting seat 1 through the pressing sheet 18, and the bearing 2 can be prevented from moving in the bearing mounting seat 1; a locking ring 19 is connected to the left outer ring of the rotating shaft 3 by a thread, and the locking ring 19 is pressed against the inner ring side vertical surface of the bearing 2, so that the rotating shaft 3 can be prevented from moving on the inner ring of the bearing 2.
Through threaded connection between the bone nail countersunk head drill bit 4 and the rotation axis 3, the bone nail countersunk head drill bit 4 can be conveniently detached and replaced by adopting a threaded connection mode.
The pin 9 is in sliding fit with the pin positioning hole 802, so that when the rack 10 moves, the pin 9 can move in the pin positioning hole 802.
The rack 10 is in sliding fit with the rack fixing hole 801, and a gap is formed between the rack 10 and the support plate 11, so that the rack 10 can move on the support plate 11 smoothly.
And an arc groove 803 is formed in the outer side of the right end of the rotating rod 8, so that fingers can fasten the rotating rod 8 conveniently.
Spring stationary housing 13 and spring compression pole 15 are the arc that matches each other respectively to the centre of a circle of arc coincides with the centre of a circle of loose axle 6, spring compression pole 15 and spring stationary housing 13's hole sliding fit, when rotary rod 8 rotated around loose axle 6, the removal in the hole of spring stationary housing 13 that spring compression pole 15 can be smooth.
The handle sleeve 16 is made of rubber materials which are convenient for an operator to hold, comfortable and anti-skidding.
The principle and the advantages of the invention are as follows: a bone nail countersink drill for orthopedics department, when using, hold the handle sleeve 16 with the hand, four fingers buckle in the circular arc recess 803, aim the tip of the bone nail countersink drill 4 at the upper end port of the bone nail hole 2101 in the bone 21, let the bone nail countersink drill 4 and bone nail hole 2101 in the same central axis, then buckle four fingers, four fingers drive the rotary lever 8 to rotate to the handle bar 12 on the bearing mount pad 1 around the movable shaft 6, the rotary lever 8 drives the rack 10 to move to the outside of the supporting plate 11 through the pin shaft 9, the rack 10 is exposed out of the outside of the supporting plate 11, because the rotary lever 8 rotates around the movable shaft 6, the pin shaft 9 will move in the pin shaft locating hole 802, in the course that the rack 10 moves to the outside of the supporting plate 11, the teeth 1002 in the recess 1001 drive the gear 5 to rotate, the gear 5 drives the rotation axis 3 to rotate on two bearings 2, the rotation axis 3 drives the bone nail countersink drill 4 at the bottom end, when the bone nail countersink bit 4 rotates, the whole bone nail countersink bit is pushed downwards by a hand, the bone 21 at the upper end of the bone nail hole 2101 is reamed and cut by the rotating bone nail countersink bit 4, at the moment, the spring compression rod 15 moves towards the inner hole of the spring fixing shell 13 and compresses the spring 14, when the rotating rod 8 touches the spring fixing shell 13, the one-time cutting process is completed, four fingers are loosened, the spring 14 extends, the spring 14 bounces the spring compression rod 15 under the action of elasticity, the spring compression rod 15 moves towards the outside of the spring fixing shell 13, the spring compression rod 15 pushes the rotating rod 8 to rotate in the opposite direction, the rotating rod 8 drives the rack 10 to move in the opposite direction, the gear 1002 on the rack 10 drives the gear 5, the rotating shaft 3 and the bone nail countersink bit 4 to rotate in the opposite direction, the rack 10 moves in the opposite direction until the blocking plate 1003 touches the supporting plate 11, and the one-, after the first cutting and restoring process is finished, the whole bone nail countersink drill can be taken away from the bone nail countersink 2102, whether the position and the shape of the primarily drilled shallow bone nail countersink 2102 are qualified is observed by naked eyes, if the position and the shape are qualified, the next cutting and restoring process is continued, the unqualified bone nail countersink drill can be slightly adjusted, the bone nail countersink 2102 is finished after the bone nail countersink drill is cut back and forth for a plurality of times, the inner hole surface of the drilled bone nail countersink 2102 is smooth and has good quality, in the process of drilling the bone nail countersink 2102, the rotating speed of the bone nail countersink drill 4 can be adjusted by increasing or reducing the force of four fingers at any time, the rotation can be stopped at any time, the control is convenient, the problem that the electric bone drill is uncontrollable can not occur, the bone nail countersink drill with good quality can be drilled efficiently and rapidly under the condition that various states are controllable, the invention has scientific and reasonable structure, and the drilled bone nail counter bore 2102 has good quality and high efficiency, has great breakthrough in the technical point of the bone nail counter bore 2102 and is suitable for popularization and use.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides an orthopedics is bored with bone nail countersink, includes bearing mount pad (1) and bearing (2), fixedly connected with bearing (2), its characterized in that in bearing mount pad (1): the inner ring of the bearing (2) is fixedly connected with a rotating shaft (3), the rotating shaft (3) penetrates through the bearing mounting seat (1), a bone nail countersunk bit (4) is fixedly connected to the outer end head of the rotating shaft (3), a gear (5) is fixedly connected to the inner end head of the rotating shaft (3), two rotary rod fixing pieces (7) are vertically and fixedly connected to the upper end of the bearing mounting seat (1), a rotary rod (8) is movably connected between the two rotary rod fixing pieces (7) through a movable shaft (6), a rectangular rack fixing hole (801) is formed in the middle of the rotary rod (8) in a penetrating mode, a rack (10) is movably connected to the rack fixing hole (801) through a pin shaft (9), two ends of the pin shaft (9) are movably connected to pin shaft positioning holes (802) on the front side wall and the rear side wall of the rack fixing hole (801), and the pin shaft, the side vertical face, corresponding to the gear (5), of the rack (10) is provided with a rectangular groove (1001), the bottom end of the groove (1001) is provided with gear teeth (1002), the gear (5) is movably arranged in the groove (1001), the gear (5) is meshed with the gear teeth (1002), the lower end of the rack (10) penetrates through the support plate (11), a blocking piece (1003) is fixedly connected to the outer end of the lower portion of the rack (10), the right end of the support plate (11) is fixedly connected with a handle rod (12), a spring fixing shell (13) is fixedly connected to the middle of the upper end of the handle rod (12), a spring (14) is installed in an inner hole of the spring fixing shell (13), a spring compression rod (15) is arranged at the upper end of the spring (14), the upper end of the spring compression rod (15) is fixedly connected to the rotating rod (8), the lower end of the spring compression rod (15) is arranged in the inner hole of the spring fixing shell (13), and the spring (14) is pressed tightly, a handle sleeve (16) is fixedly connected to the outer end of the handle rod (12), a protective cover (17) is arranged outside the gear (5), and the protective cover (17) is fixedly connected to the supporting plate (11).
2. The bone screw countersink drill for the orthopedics department according to claim 1, wherein two bearings (2) are provided, the two bearings (2) are fixedly installed in the bearing installation seat (1) side by side, the upper end of the inner side of the bearing installation seat (1) is fixedly connected with a pressing sheet (18) through a bolt, the pressing sheet (18) presses the outer ring of the bearing (2) in the bearing installation seat (1), the outer ring of the left side of the rotating shaft (3) is connected with a locking ring (19) through a thread, and the locking ring (19) is pressed on the vertical surface of the inner ring side of the bearing (2).
3. The bone screw countersink according to claim 1, wherein said bone screw countersink drill (4) is screwed to said rotary shaft (3).
4. The bone screw countersink according to claim 1, wherein said pin (9) is slidably fitted into said pin locating hole (802).
5. The bone screw countersink according to claim 1, wherein said rack (10) is slidably fitted into said rack fixing hole (801), and a gap is provided between said rack (10) and said support plate (11).
6. The bone screw countersink according to claim 1, wherein said rotary rod (8) has a circular groove (803) on the outside of the right end.
7. The bone screw countersink drill for orthopedics department according to claim 1, wherein the spring fixing shell (13) and the spring compression rod (15) are respectively in the shape of circular arcs matched with each other, the circle center of the circular arc coincides with the circle center of the movable shaft (6), and the spring compression rod (15) is in sliding fit with the inner hole of the spring fixing shell (13).
8. The bone screw countersink according to claim 1, wherein said grip (16) is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711469748.6A CN108113731B (en) | 2017-12-29 | 2017-12-29 | Bone nail countersink drill for orthopedics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711469748.6A CN108113731B (en) | 2017-12-29 | 2017-12-29 | Bone nail countersink drill for orthopedics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108113731A CN108113731A (en) | 2018-06-05 |
| CN108113731B true CN108113731B (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711469748.6A Active CN108113731B (en) | 2017-12-29 | 2017-12-29 | Bone nail countersink drill for orthopedics |
Country Status (1)
| Country | Link |
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| CN (1) | CN108113731B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112672670A (en) * | 2018-08-01 | 2021-04-16 | Tag医疗器材农业合作有限公司 | Adjustable drilling device and using method thereof |
| CN109938802A (en) * | 2019-04-29 | 2019-06-28 | 上海医疗器械（集团）有限公司手术器械厂 | Minimally Invasive Surgery instrument |
| CN111870307B (en) * | 2020-07-07 | 2022-04-22 | 中南大学湘雅医院 | Rotator cuff patching device |
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|---|---|---|---|---|
| CN86201942U (en) * | 1986-04-09 | 1987-06-03 | 谢庆年 | Mini hand-operated rotary drive device |
| EP0272434A2 (en) * | 1986-11-20 | 1988-06-29 | List, Heinz-Jürgen | Bone drilling machine |
| CN1122567A (en) * | 1993-05-11 | 1996-05-15 | 杰克·W·罗马诺 | Apparatus for drilling a curved bore |
| CN2284662Y (en) * | 1997-05-31 | 1998-06-24 | 谢增余 | Hand drill |
| US5911722A (en) * | 1998-07-23 | 1999-06-15 | Millenium Devices Llc | Leban/Gordon surgical hand driver |
| JPH11188043A (en) * | 1997-12-26 | 1999-07-13 | Gunze Ltd | Orthopedic instrument |
| CN203153861U (en) * | 2013-04-21 | 2013-08-28 | 朱亮洪 | Medical bone drill |
| CN106378475A (en) * | 2016-10-27 | 2017-02-08 | 林志城 | Electric hand drill with high applicability |
-
2017
- 2017-12-29 CN CN201711469748.6A patent/CN108113731B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86201942U (en) * | 1986-04-09 | 1987-06-03 | 谢庆年 | Mini hand-operated rotary drive device |
| EP0272434A2 (en) * | 1986-11-20 | 1988-06-29 | List, Heinz-Jürgen | Bone drilling machine |
| CN1122567A (en) * | 1993-05-11 | 1996-05-15 | 杰克·W·罗马诺 | Apparatus for drilling a curved bore |
| CN2284662Y (en) * | 1997-05-31 | 1998-06-24 | 谢增余 | Hand drill |
| JPH11188043A (en) * | 1997-12-26 | 1999-07-13 | Gunze Ltd | Orthopedic instrument |
| US5911722A (en) * | 1998-07-23 | 1999-06-15 | Millenium Devices Llc | Leban/Gordon surgical hand driver |
| CN203153861U (en) * | 2013-04-21 | 2013-08-28 | 朱亮洪 | Medical bone drill |
| CN106378475A (en) * | 2016-10-27 | 2017-02-08 | 林志城 | Electric hand drill with high applicability |
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| CN108113731A (en) | 2018-06-05 |
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Inventor after: Yin Ercheng Inventor after: Wang Zhen Inventor after: Jia Zhike Inventor after: Ding Chunlin Inventor before: Ding Chunlin |
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Effective date of registration: 20200707 Address after: Kyushu road Hebi Qibin zone 458000 Henan province No. 115 Applicant after: THE PEOPLE'S HOSPITAL OF HEBI Address before: 230601 Anhui Province, Binhu New District Rui Park Southern District, building, unit 1, Room 802, room 22 Applicant before: Ding Chunlin |
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