CN101032417A - Medical reciprocating saw - Google Patents
Medical reciprocating saw Download PDFInfo
- Publication number
- CN101032417A CN101032417A CN 200710020934 CN200710020934A CN101032417A CN 101032417 A CN101032417 A CN 101032417A CN 200710020934 CN200710020934 CN 200710020934 CN 200710020934 A CN200710020934 A CN 200710020934A CN 101032417 A CN101032417 A CN 101032417A
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- connecting portion
- main shaft
- reciprocating saw
- angle
- eccentric block
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Abstract
The medical reciprocating saw includes one casing, one spindle fixed on the rotor of the motor, one movable cutter seat inside the casing, and one rotatable eccentric block on the spindle and with one second connecting part for shifting the cutter to reciprocate, with the axis of the eccentric block and the spindle axis forming one angle of 0-90 degrees. During operation, the motor driven motor rotates to make the eccentric shaft and the eccentric block revolve around the axis of the spindle, so that the cutter seat reciprocates one time corresponding to each turn of the spindle rotation to complete high speed cutting. Compared with available technology, the medical reciprocating saw of the present invention has the advantages of low noise, smooth driving, high driving efficiency and long service life.
Description
Technical field
The invention belongs to medical instruments field, particularly a kind of hand-held medical reciprocating saw.
Background technology
In bone surgery, usually need when cutting, to bleed too much for fear of the patient with the osseous tissue that the breaks down excision of saw with the patient, the wound of cut place is the smaller the better, and this will seek medical advice need back and forth cutting at a high speed in less stroke with reciprocating sow.Yet present medical reciprocating saw of the prior art, generally include a pair of being meshing with each other and the vertical bevel gear of axial line, one of them bevel gear is fixedly connected on the rotor portion of motor, be fixedly connected with an eccentric cam that is provided with on the turning cylinder of another bevel gear, this cam is in transmission connection mutually with saw blade, thereby can realize the linear reciprocating motion of saw blade, as disclosed content in the accompanying drawing 1 of Chinese patent ZL200520052162.6, the reciprocating sow of this traditional structure utilizes bevel gear drive, therefore when running up, noise is bigger, serious wear and life-span are less.
Summary of the invention
The purpose of this invention is to provide a kind of medical reciprocating saw, can even running when running up.
The technical solution adopted in the present invention is: a kind of medical reciprocating saw, comprise housing, be arranged on the intravital motor of described shell, be fixedly connected on the main shaft on the rotor portion of described motor, be arranged on the intravital base of tool of described shell movably and be arranged on saw blade on this base of tool, be provided with eccentric block on the described main shaft rotationally, have on the described eccentric block and stir second connecting portion that the described base of tool moves back and forth, have on the described base of tool with described second connecting portion and block first connecting portion of joining mutually, and the angle between the axial line of described eccentric block and the axial line of described main shaft is β, described angle β is greater than 0 °, and described angle β is less than 90 °.
The further technical scheme of the present invention is: described angle β greater than 0 ° less than 15 °, perhaps described angle β is greater than 0 °, and described angle β is less than 5 °.
The axial line of described main shaft and the axial line of described eccentric block are in same plane.
Described main shaft is provided with the eccentric shaft that at least one section centrage departs from the axial line of described main shaft, the angle of the centrage of this eccentric shaft and the axial line of described main shaft is β, and be arranged with bearing on the described eccentric shaft, the inner ring of this bearing is fixedly installed on the described eccentric shaft, and the outer ring of this bearing is fixedly installed on the described eccentric block.
Described eccentric shaft is wholely set on described main shaft.
Described second connecting portion is the projection of radially extending along described eccentric block, and described first connecting portion is a stopper slot, and described second connecting portion is inserted in described first connecting portion rotationally.
Described first connecting portion is the projection of radially extending along described main shaft, and described second connecting portion is a stopper slot, and described first connecting portion is inserted in described second connecting portion rotationally.
When in operation process, cutting, described main shaft rotates around self axial line under the driving of motor, eccentric shaft then revolves round the sun around the axial line of main shaft, eccentric block is 2 β with respect to the pivot angle scope of main shaft, correspondingly, the main shaft revolution moves a week, and the base of tool just moves back and forth one back and forth, thereby finishes high-speed cutting.Owing to adopted above technical scheme, make the present invention compared with prior art have the stable transmission advantage, particularly under the situation that medical reciprocating saw runs up, it has that noise is little, transmission efficiency is high, transmission is accurate and advantage such as the life-span is long.
Description of drawings
Accompanying drawing 1 is a main cutaway view of the present invention;
Wherein: 1, housing; 2, motor; 3, main shaft; 31, eccentric shaft; 4, eccentric block; 41, bearing; 42, second connecting portion; 5, the base of tool; 51, first connecting portion; 6, saw blade;
The specific embodiment
Wherein, be wholely set one section centrage on the main shaft 3 and depart from the eccentric shaft 31 of the axial line of main shaft 3, the angle of the axial line of the centrage of this eccentric shaft 31 and main shaft 3 is β, and be arranged with bearing 41 on the eccentric shaft 31, the inner ring fixed cover of this bearing 41 is located on the eccentric shaft 31, then is arranged with eccentric block 4 on the outer ring of bearing 41.Therefore, eccentric shaft 31 is around the axial line revolution of main shaft 3, and eccentric block 4 relative housings 1 are swung, and the pivot angle scope of eccentric block 4 is 2 β, and angle β is greater than 0 ° of acute angle less than 90 °.
Have on the eccentric block 4 and stir second connecting portion 42 that the base of tool 5 moves back and forth, have on the base of tool 5 with second connecting portion 42 and block first connecting portion 51 of joining mutually, therefore when eccentric block 4 swings, just can promote the base of tool 5 and move, thereby realization of High Speed is cut along linear reciprocation.In the present embodiment, second connecting portion 42 is the projection of radially extending along eccentric block 4, and the end of projection is rounded, first connecting portion 51 is a stopper slot, second connecting portion 42 is inserted in first connecting portion 51 rotationally, both realized the drive connection of eccentric block 4, satisfied the relation of being rotatably connected of second connecting portion 42 and first connecting portion 51 simultaneously again with the base of tool 5.
The stroke of the base of tool 5 depends on that the centrage of the size of angle β and the base of tool 5 is to main shaft 3 axial line distances, therefore, no matter change the size of angle β or the centrage of the change base of tool 5 can change saw blade 6 to the distance of the axial line of main shaft 3 stroke.Usually, can select β greater than 0 ° and be advisable less than 15 °; For further dwindling the volume of medical reciprocating saw, angle β is greater than 0 ° in the most preferred embodiment of the present invention, and less than 5 ° acute angle.
Content of the present invention is not limited in the content that is disclosed in description or the accompanying drawing 1; motor 2 wherein; main shaft 3; eccentric shaft 31; eccentric block 4; the base of tool 5; first connecting portion 51 and second connecting portion 42 all can be equal to object with other and substitute; such as the syndeton of eccentric block 4 with the base of tool 5; can replace with following mode: first connecting portion 51 is the projection of radially extending along main shaft 3; and second connecting portion 42 is a stopper slot; first connecting portion 51 is inserted in second connecting portion 42 rotationally; can satisfy movement relation equally, but these variations all do not break away from the present invention's interest field required for protection.
In addition, in the present embodiment, the axial line of the axial line of main shaft 3 and eccentric block 4 is in same plane, it can also be in different planes, be that the axial line of main shaft 3 and the axial line of eccentric block 4 are different surface beeline, but because the movement locus of eccentric block 4 is comparatively complicated, it is comparatively loaded down with trivial details to design structure, therefore just will not discuss at this.
Claims (8)
1, a kind of medical reciprocating saw, comprise housing (1), be arranged on the motor (2) in the described housing (1), be fixedly connected on the main shaft (3) on the rotor portion of described motor (2), be arranged on the base of tool (5) in the described housing (1) movably and be arranged on saw blade (6) on this base of tool (5), it is characterized in that: be provided with eccentric block (4) on the described main shaft (3) rotationally, have on the described eccentric block (4) and stir second connecting portion (42) that the described base of tool (5) moves back and forth, have on the described base of tool (5) with described second connecting portion (42) and block first connecting portion (51) of joining mutually, and the angle between the axial line of the axial line of described eccentric block (4) and described main shaft (3) is β, described angle β is greater than 0 °, and described angle β is less than 90 °.
2, medical reciprocating saw according to claim 1 is characterized in that: described angle β is greater than 0 °, and described angle β is less than 15 °.
3, medical reciprocating saw according to claim 2 is characterized in that: described angle β is greater than 0 °, and described angle β is less than 5 °.
4, medical reciprocating saw according to claim 1 is characterized in that: the axial line of the axial line of described main shaft (3) and described eccentric block (4) is in same plane.
5, medical reciprocating saw according to claim 4, it is characterized in that: described main shaft (3) is provided with the eccentric shaft (31) that at least one section centrage departs from the axial line of described main shaft (3), the angle of the axial line of centrage of this eccentric shaft (31) and described main shaft (3) is β, and be arranged with bearing (41) on the described eccentric shaft (31), the inner ring of this bearing (41) is fixedly installed on the described eccentric shaft (31), and the outer ring of this bearing (41) is fixedly installed on the described eccentric block (4).
6, medical reciprocating saw according to claim 5 is characterized in that: described eccentric shaft (31) is wholely set on described main shaft (3).
7, medical reciprocating saw according to claim 1, it is characterized in that: described second connecting portion (42) is the projection of radially extending along described eccentric block (4), described first connecting portion (51) is a stopper slot, and described second connecting portion (42) is inserted in described first connecting portion (51) rotationally.
8, medical reciprocating saw according to claim 1, it is characterized in that: described first connecting portion (51) is the projection of radially extending along described main shaft (3), described second connecting portion (42) is a stopper slot, and described first connecting portion (51) is inserted in described second connecting portion (42) rotationally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710020934 CN101032417A (en) | 2007-03-30 | 2007-03-30 | Medical reciprocating saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710020934 CN101032417A (en) | 2007-03-30 | 2007-03-30 | Medical reciprocating saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101032417A true CN101032417A (en) | 2007-09-12 |
Family
ID=38729294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710020934 Pending CN101032417A (en) | 2007-03-30 | 2007-03-30 | Medical reciprocating saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101032417A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104523319A (en) * | 2014-12-23 | 2015-04-22 | 陈澜涛 | Sternum saw device used in thoracic surgery |
| CN105030287A (en) * | 2014-04-17 | 2015-11-11 | 柯惠Lp公司 | Vibrating surgical instruments for blunt dissection |
| CN106425350A (en) * | 2016-12-23 | 2017-02-22 | 诺鑫（南通）医疗技术有限公司 | Preparation method of medical power reciprocating saw blade |
| CN108095792A (en) * | 2017-12-25 | 2018-06-01 | 芜湖锐进医疗设备有限公司 | Medical saw drilling machine shell structure |
-
2007
- 2007-03-30 CN CN 200710020934 patent/CN101032417A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105030287A (en) * | 2014-04-17 | 2015-11-11 | 柯惠Lp公司 | Vibrating surgical instruments for blunt dissection |
| CN104523319A (en) * | 2014-12-23 | 2015-04-22 | 陈澜涛 | Sternum saw device used in thoracic surgery |
| CN106425350A (en) * | 2016-12-23 | 2017-02-22 | 诺鑫（南通）医疗技术有限公司 | Preparation method of medical power reciprocating saw blade |
| CN108095792A (en) * | 2017-12-25 | 2018-06-01 | 芜湖锐进医疗设备有限公司 | Medical saw drilling machine shell structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |