CN110801261B - Double-moving-piece fine cutting swing saw blade for orthopedic surgery - Google Patents
Double-moving-piece fine cutting swing saw blade for orthopedic surgery Download PDFInfo
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- CN110801261B CN110801261B CN201911153467.9A CN201911153467A CN110801261B CN 110801261 B CN110801261 B CN 110801261B CN 201911153467 A CN201911153467 A CN 201911153467A CN 110801261 B CN110801261 B CN 110801261B
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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
- A61B17/14—Surgical saws ; Accessories therefor
- A61B17/142—Surgical saws ; Accessories therefor with reciprocating saw blades, e.g. with cutting edges at the distal end of the saw blades
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Abstract
The invention discloses a double-moving-piece fine cutting and swinging saw blade for orthopedic surgery, which comprises a sheath, wherein a first moving piece and a second moving piece are arranged in the sheath, and the first moving piece is overlapped on the second moving piece; the front end and the rear end of the first movable piece and the front end and the rear end of the second movable piece are positioned outside the sheath; the front end of the first movable piece and the front end of the second movable piece are both provided with sawteeth; the front end and the rear end of the outer sheath are both provided with hollow parts for the left and right movement of the first moving piece and the second moving piece; a rotating shaft is arranged in the outer sheath and simultaneously penetrates through the first movable piece and the second movable piece; when the rear end of the first movable piece and the rear end of the second movable piece are subjected to forces in opposite directions, the sawteeth of the first movable piece and the sawteeth of the second movable piece move in opposite directions left and right by taking the rotating shaft as a circle center. The saw blade can realize the reverse cutting of the two saw-tooth ends to the skeleton, and has higher cutting efficiency and reduced noise.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a double-moving-piece fine cutting pendulum saw blade for orthopedic surgery.
Background
Surgical instruments used in orthopedic clinical operations generally use an orthopedic power system as a power source. Among orthopedic powered system driven surgical instruments, a swing saw is a common device. There is a great need in orthopedic surgery to use oscillating saws as bone cutting devices. Driven single moving piece formula pendulum saw bit, when clinical use, it has the defect that can't carry out accurate cutting and polish, factor of safety is low. In addition, the single moving blade type oscillating saw blade for transmission can shake during working and has high noise.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a double-moving-piece fine cutting pendulum saw blade for orthopedic surgery.
The invention solves the technical problems through the following technical scheme:
a double-moving-piece precise cutting and swinging saw blade for orthopedic surgery comprises a sheath, wherein a first moving piece and a second moving piece are arranged in the sheath, and the first moving piece is overlapped on the second moving piece; the front end and the rear end of the first movable piece and the front end and the rear end of the second movable piece are positioned outside the sheath; the front end of the first movable piece and the front end of the second movable piece are both provided with sawteeth; the front end and the rear end of the outer sheath are both provided with hollow parts for the left and right movement of the first moving piece and the second moving piece; a rotating shaft is arranged in the outer sheath and simultaneously penetrates through the first movable piece and the second movable piece; when the rear end of the first movable piece and the rear end of the second movable piece are subjected to forces in opposite directions, the sawteeth of the first movable piece and the sawteeth of the second movable piece move in opposite directions left and right by taking the rotating shaft as a circle center.
The middle part of the first moving plate is provided with a first mounting hole, the middle part of the second moving plate is provided with a second mounting hole, and the rotating shaft simultaneously penetrates through the first mounting hole and the second mounting hole; the sawteeth of the first movable plate and the sawteeth of the second movable plate are distributed along the left and right directions of the sheath.
The first movable piece is provided with a first bent part which is arranged behind the first mounting hole; the second movable piece is provided with a second bent part which is arranged behind the second mounting hole; the first bending part and the second bending part are respectively arranged at two sides of the rotating shaft.
The rear end of the first moving plate is provided with a first connecting hole for receiving external driving force, and the rear end of the second moving plate is provided with a second connecting hole for receiving external driving force; the first connecting hole and the second connecting hole are both positioned outside the sheath.
The sheath comprises two sheath plates, and the first movable piece and the second movable piece are arranged between the two sheath plates; the rotating shaft is clamped between the two sheathing plates.
The sheath is provided with a chip removal component which can discharge bone chips from the sheath.
The chip removal part is a chip removal hole which is arranged on the sheathing board and is close to the sawteeth.
The outer sheath is provided with a locking part which can lock the outer sheath on the orthopedic instrument driving device.
The locking component is a machine head locking hole which penetrates through the two sheathing plates, and the rear end of the first movable piece and the rear end of the second movable piece are respectively arranged on two sides of the machine head locking hole.
The inner walls of the two sheathing plates are respectively provided with two blind holes, and the two ends of the rotating shaft are respectively arranged in the two blind holes.
The invention has the beneficial effects that: the saw blade can realize the reverse cutting of the two saw-tooth ends to the skeleton, the cutting efficiency is higher, and the noise is reduced; in addition, set up the pivot at the middle part of first rotor and the middle part of second rotor, reduced the vibrations moment of rotor greatly, increased the cutting moment of rotor to eliminate the violent vibrations that the rotor arouses when high-speed operation greatly, promoted the control performance of system, give the doctor simultaneously more clear operation observation field of vision. Due to the protection of the outer sheath, when the two movable blades perform cutting, the potential damage to surrounding soft tissues is effectively reduced, the saw blade is prevented from impacting the osteotomy guide plate, a doctor can have a clearer operation observation field, the safety of the patient is greatly increased, the operation accuracy of the doctor is also improved, and the success rate and the safety of clinical operations are greatly improved.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
FIG. 2 is an assembly view of the preferred embodiment of the present invention.
FIG. 3 is a schematic diagram of the internal structure of the preferred embodiment of the present invention.
Detailed Description
The present invention will be more clearly and completely described in the following description of preferred embodiments, taken in conjunction with the accompanying drawings.
As shown in fig. 1, 2 and 3, the double-acting-plate finishing-cutting swing blade for orthopedic surgery comprises a sheath 10, a first moving plate 21 and a second moving plate 22 are arranged in the sheath 10, and the first moving plate 21 is overlapped on the second moving plate 22.
The front end and the rear end of the first rotor 21 and the front end and the rear end of the second rotor 22 are located outside the sheath 10. The front end of the first movable plate 21 and the front end of the second movable plate 22 are both provided with saw teeth 20.
The front end and the rear end of the sheath 10 are provided with hollow parts 11 for the left and right movement of the first moving piece and the second moving piece.
The sheath 10 is provided with a rotating shaft 12, and the rotating shaft 12 is simultaneously inserted through the first moving plate 21 and the second moving plate 22.
The sheath 10 includes two sheath plates 13, and a first moving plate 21 and a second moving plate 22 are disposed between the two sheath plates 13.
The rotating shaft is clamped between the two sheathing plates. The inner walls of the two sheathing plates 13 are respectively provided with two blind holes 14, and two ends of the rotating shaft 12 are respectively arranged in the two blind holes 14.
The middle part of the first moving plate 21 is provided with a first mounting hole 31, the middle part of the second moving plate 22 is provided with a second mounting hole 32, and the rotating shaft 12 penetrates through the first mounting hole 31 and the second mounting hole 32.
The saw teeth of the first moving plate 21 and the saw teeth of the second moving plate 22 are distributed along the left and right direction of the sheath.
The first moving piece 21 is provided with a first bending part 41, and the first bending part 41 is arranged behind the first mounting hole 31; the second moving piece 22 is provided with a second bending part 42, and the second bending part 42 is arranged behind the second mounting hole 32; the first bent portion 41 and the second bent portion 42 are respectively disposed at two sides of the rotating shaft 12.
The rear end of the first rotor 21 is provided with a first connecting hole 51 for receiving external driving force, and the rear end of the second rotor 22 is provided with a second connecting hole 52 for receiving external driving force; the first and second coupling holes 51 and 52 are located outside the outer sheath 10.
When the rear end of the first rotor 21 and the rear end of the second rotor 22 are subjected to forces in opposite directions, the saw teeth of the first rotor 21 and the saw teeth of the second rotor 22 move in opposite directions around the rotating shaft 12.
The sheath 10 is provided with a debris discharging member for discharging bone debris from the sheath. In this embodiment, the chip removal component is a chip removal hole 15, and the chip removal hole 15 is disposed on the sheathing board and close to the saw teeth.
The sheath 10 is provided with a locking component which can lock the sheath on the orthopedic instrument driving device. In this embodiment, the locking component is a handpiece locking hole 16, the handpiece locking hole 16 penetrates through the two sheathing plates 13, and the rear end of the first rotor 21 and the rear end of the second rotor 22 are respectively disposed on both sides of the handpiece locking hole 16.
When in use, the rear end of the double-moving-piece fine cutting pendulum saw blade for the orthopedic operation is inserted into the head of the driving device of the orthopedic instrument. The orthopedic instrument driving device can be a high-speed shock-absorbing anti-shaking micro-oscillating saw.
And a locking pin is inserted into the handpiece locking hole, so that the outer sheath is fixed with the main body of the orthopedic instrument driving device. The first connecting hole of the first rotor and the second connecting hole of the second rotor are respectively connected with two driving ends of an orthopedic instrument driving device, the two driving ends of the orthopedic instrument driving device can apply opposite forces on the first rotor and the second rotor, so that the rear end of the first rotor and the rear end of the second rotor swing left and right, and when the rear end of the first rotor swings right, the rear end of the second rotor swings left; when the rear end of the first moving piece swings towards the left, the rear end of the second moving piece swings towards the right.
When the rear end of the first movable piece swings to the right and the rear end of the second movable piece swings to the left, the sawtooth at the front end of the first movable piece swings to the left and the sawtooth at the front end of the second movable piece swings to the right by taking the rotating shaft as a rotating center. When the rear end of the first movable piece swings towards the left and the rear end of the second movable piece swings towards the right, the sawteeth at the front end of the first movable piece swing towards the right, and the sawteeth at the front end of the second movable piece swing towards the left. In this way, the saw teeth of the first moving blade and the saw teeth of the second moving blade can realize reverse cutting.
Under the continuous drive of the orthopedic instrument driving device, the rear end of the first movable sheet and the rear end of the second movable sheet respectively swing left and right circularly, so that the sawteeth of the first movable sheet and the sawteeth of the second movable sheet continuously realize reverse cutting.
Because the saw teeth of the first movable plate and the saw teeth of the second movable plate always move in opposite directions, the vibration generated when the traditional single-blade oscillating saw blade oscillates left and right can be almost completely counteracted, and the left and right swinging displacement generated when the saw blade drives an object to be cut can be counteracted, so that the shake can be eliminated when the bone is cut at high speed.
The two moving plates simultaneously realize the cutting of the bone, and the two moving plates are reversely cut, so the cutting efficiency is higher, and the noise is reduced.
The middle part at first rotor and the middle part of second rotor set up the pivot for the oscillating axle has moved to in the middle of the saw bit by traditional whole saw bit root, like this, has reduced the vibrations moment of rotor greatly, has increased the cutting torque of rotor, thereby has eliminated the violent vibrations that the rotor arouses when high-speed operation greatly, has promoted the performance of controlling of system, gives the doctor more clear operation observation field of vision simultaneously.
Due to the protection of the outer sheath, when the two movable blades perform cutting, the potential damage to surrounding soft tissues is effectively reduced, the saw blade is prevented from impacting the osteotomy guide plate, a doctor can have a clearer operation observation field, the safety of the patient is greatly increased, the operation accuracy of the doctor is also improved, and the success rate and the safety of clinical operations are greatly improved.
The handpiece locking hole is arranged in the embodiment, so that the outer sheath can still keep static when the driving end of the orthopedic instrument driving device swings at high speed after the outer sheath is inserted into the orthopedic instrument driving device. The doctor can hand the saw bit, cooperates the electrodeless speed governing function, can realize exquisite modification, makes the osteotomy more accurate.
The machine head locking hole is formed in the outer sheath, so that potential damage to surrounding soft tissues is effectively reduced, working noise is reduced, and the risk that the saw blade flies out to hurt people due to improper installation is thoroughly eliminated.
Bone fragments generated when the saw blade cuts enter the inside of the outer sheath from the front end of the outer sheath. In the embodiment, the sheath is provided with the clearance hole, so that bone fragments can be discharged from the clearance hole due to the micro-pendulum of the moving plate body in the sheath. Like this for this saw bit is more smooth and easy at the during operation, compares in traditional driving system, and efficiency can greatly increased.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (4)
1. A double-moving-piece fine cutting and swinging saw blade for orthopedic surgery comprises a sheath, and is characterized in that a first moving piece and a second moving piece are arranged in the sheath, and the first moving piece is overlapped on the second moving piece; the front end and the rear end of the first movable piece and the front end and the rear end of the second movable piece are positioned outside the sheath; the front end of the first movable piece and the front end of the second movable piece are both provided with sawteeth; the front end and the rear end of the outer sheath are both provided with hollow parts for the left and right movement of the first moving piece and the second moving piece; a rotating shaft is arranged in the outer sheath and simultaneously penetrates through the first movable piece and the second movable piece; when the rear end of the first movable piece and the rear end of the second movable piece are subjected to forces in opposite directions, the sawteeth of the first movable piece and the sawteeth of the second movable piece move in opposite directions left and right by taking the rotating shaft as the center of a circle; the middle part of the first moving plate is provided with a first mounting hole, the middle part of the second moving plate is provided with a second mounting hole, and the rotating shaft simultaneously penetrates through the first mounting hole and the second mounting hole; the sawteeth of the first movable plate and the second movable plate are distributed along the left and right directions of the sheath; the first movable piece is provided with a first bent part which is arranged behind the first mounting hole; the second movable piece is provided with a second bent part which is arranged behind the second mounting hole; the first bending part and the second bending part are respectively arranged at two sides of the rotating shaft; the rear end of the first moving plate is provided with a first connecting hole for receiving external driving force, and the rear end of the second moving plate is provided with a second connecting hole for receiving external driving force; the first connecting hole and the second connecting hole are positioned outside the sheath; the sheath comprises two sheath plates, and the first movable piece and the second movable piece are arranged between the two sheath plates; the rotating shaft is clamped between the two sheathing plates; the outer sheath is provided with a locking component which can lock the outer sheath on the orthopedic instrument driving device; the locking component is a machine head locking hole which penetrates through the two sheathing plates, and the rear end of the first movable piece and the rear end of the second movable piece are respectively arranged on two sides of the machine head locking hole.
2. The double-acting-piece fine cutting pendulum saw blade for orthopedic surgery of claim 1, wherein the sheath is provided with a chip removal part for removing bone chips from the sheath.
3. The double-acting-piece fine-cutting pendulum saw blade for orthopedic surgery as claimed in claim 2, wherein the chip removal component is a chip removal hole provided on the sheathing board and near the saw teeth.
4. The double-acting-piece fine-cutting pendulum saw blade for orthopedic surgery as claimed in claim 1, wherein the inner walls of the two sheathing plates are respectively provided with two blind holes, and both ends of the rotating shaft are respectively provided in the two blind holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911153467.9A CN110801261B (en) | 2019-11-22 | 2019-11-22 | Double-moving-piece fine cutting swing saw blade for orthopedic surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911153467.9A CN110801261B (en) | 2019-11-22 | 2019-11-22 | Double-moving-piece fine cutting swing saw blade for orthopedic surgery |
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| Publication Number | Publication Date |
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| CN110801261A CN110801261A (en) | 2020-02-18 |
| CN110801261B true CN110801261B (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911153467.9A Active CN110801261B (en) | 2019-11-22 | 2019-11-22 | Double-moving-piece fine cutting swing saw blade for orthopedic surgery |
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Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2511449Y (en) * | 2001-11-12 | 2002-09-18 | 郭树平 | Scissors |
| CN101473713A (en) * | 2009-02-01 | 2009-07-08 | 盐城市盐海拖拉机制造有限公司 | Dual-spindle dislocation output speed variator of straw returning machine |
| US8672943B2 (en) * | 2009-05-12 | 2014-03-18 | Synvasive Technology, Inc. | Surgical saw blade device and system |
| CN201683918U (en) * | 2010-05-23 | 2010-12-29 | 孙衍伟 | Novel tumor tissue sampling scissors |
| WO2012170459A2 (en) * | 2011-06-10 | 2012-12-13 | Tufts University | Sagittal saw |
| JP2015527911A (en) * | 2012-07-12 | 2015-09-24 | シンセス・ゲーエムベーハーＳｙｎｔｈｅｓ ＧｍｂＨ | Saw, saw blade, and coupling mechanism |
| CN103845094A (en) * | 2012-12-05 | 2014-06-11 | 上海市浦东新区知识产权保护协会 | Pancreas measuring and blocking pincer |
| CN103505259B (en) * | 2013-10-22 | 2015-12-23 | 重庆西山科技股份有限公司 | The goose saw head assembly of the removable saw blade assembly of orthopaedics |
| CA2985614A1 (en) * | 2015-05-12 | 2016-11-17 | Stryker European Holdings I, Llc | Surgical sagittal blade cartridge with a reinforced guide bar |
| CN105559848B (en) * | 2015-12-29 | 2019-11-12 | 重庆西山科技股份有限公司 | Protect sheath goose saw piece |
| CN206866117U (en) * | 2017-04-01 | 2018-01-12 | 孙硕康 | A kind of foldable portable garden shear |
| CN106963448A (en) * | 2017-04-06 | 2017-07-21 | 范士洁 | A kind of orthopaedics osteotomy instrument and its application method |
| CN107693087B (en) * | 2017-11-07 | 2023-11-03 | 北京蒙太因医疗器械有限公司 | Pendulum saw for osteotomy |
| CN209017495U (en) * | 2018-07-26 | 2019-06-25 | 天津鸿丰骏业园林股份有限公司 | A kind of garden shearer |
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