CN105105818A - Medical reciprocating saw - Google Patents
Medical reciprocating saw Download PDFInfo
- Publication number
- CN105105818A CN105105818A CN201510434434.7A CN201510434434A CN105105818A CN 105105818 A CN105105818 A CN 105105818A CN 201510434434 A CN201510434434 A CN 201510434434A CN 105105818 A CN105105818 A CN 105105818A
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- CN
- China
- Prior art keywords
- cutter
- steel ball
- guide
- reciprocating saw
- bevel gear
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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
- A61B17/15—Guides therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Dentistry (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a medical reciprocating saw. The medical reciprocating saw comprises a transmission mechanism and a cutter locking mechanism, wherein the transmission mechanism comprises a driving shaft, an arc driving bevel gear which is arranged on one end of the driving shaft, an arc driven bevel gear which is matched with the arc driving bevel gear, an eccentric shaft which is perpendicular to the axis of the arc driven bevel gear, an oscillating bar which is nested in the eccentric shaft, a cutter guide shaft which is connected with the oscillating rod and a linear bearing which is matched with the cutter guide shaft; the cutter locking mechanism comprises a connecting part, a cutter fixing sleeve which is partially inserted into the cutter guide shaft, a cutter which is partially clamped in the cutter fixing sleeve, a cutter rotating switch which is arranged on the outer surface of the cutter fixing sleeve, a first steel ball and a second steel ball, which are arranged inside the cutter rotating switch in a sliding manner, a first spring which is arranged inside the cutter rotating switch and matched with the first steel ball and a second spring which is matched with the second steel ball. The medical reciprocating saw is small in load on a guide mechanism and capable of implementing high-precision stable movement, the cutter locking mechanism is simple in structure and low in cost, and the cutter is convenient to disassemble.
Description
Technical field
The invention belongs to medical instruments field, particularly a kind of medical reciprocating saw.
Background technology
Along with the progress and development of medical science, the requirement for medical apparatus is also more and more higher.In medical bone surgery, the general resection operation adopting reciprocating sow to be done osseous tissue by the saw blade of high speed swinging.Reciprocating sow external structure similarity for medical treatment on market is higher, but internal structure is various, the especially guiding mechanism of cutter, guiding mechanism kind is a lot, guiding mechanism on some reference moulds, some employing steel balls, sliding sleeve coordinate, the employing axis of guide also had, the structure of these mechanisms is general all comparatively complicated, cost is higher, and guiding is not very accurate, poor reliability, do not possess the effect automatically regulated, so these mechanisms are not widely used.
More the tool lock system design of reciprocating sow, adopted swivel nut in the past, compressed saw blade with conical surface Compress Spring chuck.Have certain vibration when reciprocating sow works, under this saw blade mounting means, saw blade in use easily occurs that the conical surface loosens or tight situation trembled by the conical surface, affects the stationarity in use procedure.So this type of saw blade, not only poor reliability, install slow, and inconvenient operation.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of medical reciprocating saw, and its cutter guiding mechanism load is little, and can realize high-precision easy motion, and tool lock system structure is simple, and cost is low, cutter convenient disassembly.
For solving the problem, the invention provides a kind of medical reciprocating saw, a kind of medical reciprocating saw, the arc driven wheel of differential that it is characterized by it and comprise drive mechanism and tool lock system, described drive mechanism comprises driving shaft, is arranged on the arc drive bevel gear of driving shaft one end, coordinate with arc drive bevel gear, the vertical eccentric shaft be placed on arc driven wheel of differential axial line, the linear bearing fork mutually sheathed with eccentric shaft, the cutter axis of guide be connected with fork being set and matching with the cutter axis of guide; Described tool lock system comprise connecting portion, at least partly intert cutter fixed cover in the cutter axis of guide, be clipped in cutter in cutter fixed cover at least partly, be positioned at the cutter rotary switch of cutter fixed cover outer surface, be arranged on cutter and screw switch internal slidably the first steel ball and the second steel ball and be positioned at cutter and screw the first spring that switch internal coordinates with the first steel ball and the second spring coordinated with the second steel ball.
In addition, the present invention also provides following attached technical scheme:
Driving shaft in described drive mechanism, the cutter axis of guide and described tool lock system are in same level line, power is transmitted and keeps precise and stable.
Described at least part of cutter axis of guide interts in linear bearing, and linear bearing can support and guide the cutter axis of guide, moves reciprocatingly by given direction, and select linear bearing to be guiding mechanism, its load is little, and can realize high-precision easy motion.
Described arc drive bevel gear and arc driven wheel of differential are a pair orthogonal bevel gear in axle center, arc drive bevel gear is vertically placed, arc driven wheel of differential horizontal positioned, both are by engaging each other, and motion are turned to and pass to the eccentric shaft vertically placed.Bevel gear stable drive, gear ratio is accurate, and reliable operation, efficiency are high, the life-span is long, the power of use, speed and size range are large, and can effectively reduce reciprocating noise.
Described fork is enclosed within eccentric shaft, and fork is connected with the cutter axis of guide by straight pin.
In described tool lock system, first spring one end is fixed on cutter and screws switch, the other end connects the first steel ball, first steel ball and connecting portion are against installation, so can realize when turning cutter and screwing switch, cutter screws switch and rotates relative to connector, and rotary switch and connector are in the state of relative securement always because of the effect of the first spring and the first steel ball.
Described cutter fixed cover has for the nested hole of the second steel ball.
In described tool lock system, the cutter axis of guide relies on cutter fixed cover and the second steel ball to be clamped by cutter.
When mounting cutter, turn cutter and screw switch, cutter screw switch band cutter fix in trepanning second steel ball rotate, and then carry its tools fixed cover motion, the inclined-plane of the inclined-plane squeezing knife tool axis of guide of cutter fixed cover inside forces cutter axis of guide clamp-on tool.This tool lock system structure is simple, cutter convenient disassembly.
When using this reciprocating sow, the power of driving shaft transmission drives arc drive bevel gear, arc driven wheel of differential passes motion to arc driven wheel of differential by engagement, thus drive eccentric shaft to carry out coaxial rotating motion simultaneously, be enclosed within the fork on eccentric shaft, moved together by the straight pin carry its tools axis of guide, eccentric shaft moves a circumference, cutter carries out one back and forth back and forth, thus the high-speed smooth completed in osseous tissue resection operation is cut.
Beneficial effect of the present invention:
Medical reciprocating saw provided by the invention, its guiding mechanism load is little, and can realize high-precision easy motion, and tool lock system structure is simple, and cost is low, cutter convenient disassembly.
Accompanying drawing explanation
Fig. 1 is the reciprocating sow structure diagram of the embodiment of the present invention.
Fig. 2 is the tool lock system sketch of the embodiment of the present invention.
Fig. 3 is the band saw axonometric drawing of the embodiment of the present invention.
In figure, 1: driving shaft, 2: arc drive bevel gear, 3: arc driven wheel of differential, 4: eccentric shaft, 5: fork, 6: straight pin, 7: the cutter axis of guide, 8: linear bearing, 9: cutter fixed cover, 10: connecting portion, 12: cutter screws switch, 13: cutter, 14: the first steel balls, 15: the second steel balls, 16: the first springs.
Detailed description of the invention:
Embodiment: as shown in Figure 1 to Figure 3, the invention provides a kind of specific embodiment of medical reciprocating saw.Medical reciprocating saw in this embodiment, it comprises drive mechanism and tool lock system, drive mechanism comprises driving shaft 1, is arranged on the arc drive bevel gear 2 of driving shaft 1 one end, the arc driven wheel of differential 3 coordinated with arc drive bevel gear 2, the vertical eccentric shaft 4 be placed on arc driven wheel of differential 3 axial line, the linear bearing 8 that the fork 5 mutually sheathed with eccentric shaft 4, the cutter axis of guide 7 be connected with fork 5 is set and matches with the cutter axis of guide 7; Tool lock system comprise connecting portion 10, at least partly intert cutter fixed cover 9 in the cutter axis of guide 7, be clipped in cutter 13 in cutter fixed cover 9 at least partly, be positioned at the cutter rotary switch 12 of cutter fixed cover 9 outer surface, be arranged on cutter and screw the first steel ball 14 and second steel ball 15 of switch 12 inner slidable and be positioned at cutter and screw the first spring 16 that switch 12 inside coordinates with the first steel ball 14 and the second spring (not shown) coordinated with the second steel ball 15.
Driving shaft 1 in this drive mechanism, the cutter axis of guide 7 and described tool lock system are in same level line.
At least part of cutter axis of guide 7 interts in linear bearing 8.
Arc drive bevel gear 2 and arc driven wheel of differential 3 are a pair orthogonal bevel gear in axle center, arc drive bevel gear 2 is vertically placed, arc driven wheel of differential 3 horizontal positioned, both are by engaging each other, and motion are turned to and pass to the eccentric shaft 4 vertically placed.
Fork 5 is enclosed within eccentric shaft 4, and fork 5 is connected with the cutter axis of guide 7 by straight pin 6.
In tool lock system, first spring 16 one end is fixed on cutter and screws switch 12, and it is against installation with connecting portion 10 that the other end connects the first steel ball 14, first steel ball 14.
Cutter fixed cover 9 have for the second steel ball 15 nested hole (not shown).
The cutter axis of guide 7 relies on cutter fixed cover 9 and the second steel ball 15 to be clamped by cutter 13.
Preferably, in the present embodiment, the first steel ball 14 and the first spring 16 are respectively 4; Second steel ball 15 and the second spring are respectively 2.
When mounting cutter, turn cutter and screw switch 12, the second steel ball 15 that cutter screws in switch 12 carry its tools fixed cover 9 hole rotates, and then carry its tools fixed cover 9 moves, the inclined-plane (not shown) of the inclined-plane (not shown) squeezing knife tool axis of guide 7 of cutter fixed cover 9 inside forces the cutter axis of guide 7 clamp-on tool 13.
When using this reciprocating sow, the power that driving shaft 1 transmits drives arc drive bevel gear 2, arc driven wheel of differential 2 passes motion to arc driven wheel of differential 3 by engagement, thus drive eccentric shaft 4 to carry out coaxial rotating motion simultaneously, be enclosed within the fork 5 on eccentric shaft 4, moved together by the straight pin 6 carry its tools axis of guide 7, eccentric shaft 4 moves a circumference, cutter 13 carries out one back and forth back and forth, thus the high-speed smooth completed in osseous tissue resection operation is cut.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (9)
1. a medical reciprocating saw, it is characterized by it and comprise drive mechanism and tool lock system, described drive mechanism comprises driving shaft (1), be arranged on the arc drive bevel gear (2) of driving shaft (1) one end, the arc driven wheel of differential (3) coordinated with arc drive bevel gear (2), vertically be placed on the eccentric shaft (4) on arc driven wheel of differential (3) axial line, the fork (5) mutually sheathed with eccentric shaft (4) is set, the cutter axis of guide (7) be connected with fork (5), and the linear bearing (8) to match with the cutter axis of guide (7), described tool lock system comprises connecting portion (10), intert the cutter fixed cover (9) in the cutter axis of guide (7) at least partly, be clipped in the cutter (13) in cutter fixed cover (9) at least partly, be positioned at the cutter rotary switch (12) of cutter fixed cover (9) outer surface, be arranged on the first steel ball (14) and the second steel ball (15) that cutter screws switch (12) inner slidable, and be positioned at the second spring (17) that cutter screws switch (12) the first spring (16) of coordinating with the first steel ball (14) of inside and coordinate with the second steel ball (15).
2. medical reciprocating saw according to claim 1, is characterized by: the driving shaft (1) in described drive mechanism, the cutter axis of guide (7) and described tool lock system are in same level line.
3. medical reciprocating saw according to claim 1, is characterized by: described at least part of cutter axis of guide (7) is interted in linear bearing (8).
4. medical reciprocating saw according to claim 1, it is characterized by: described arc drive bevel gear (2) and arc driven wheel of differential (3) are a pair orthogonal bevel gear in axle center, arc drive bevel gear (2) is vertically placed, arc driven wheel of differential (3) horizontal positioned, both are by engaging each other, and motion are turned to and pass to the eccentric shaft (4) vertically placed.
5. medical reciprocating saw according to claim 1, is characterized by: described fork (5) is enclosed within eccentric shaft (4), and fork (5) is connected with the cutter axis of guide (7) by straight pin (6).
6. medical reciprocating saw according to claim 1, it is characterized by: in described tool lock system, first spring (16) one end is fixed on cutter and screws switch (12), the other end connects the first steel ball (14), and the first steel ball (14) and connecting portion (10) are against installation.
7. medical reciprocating saw according to claim 1, is characterized by: described cutter fixed cover (9) have for the second steel ball (15) nested hole.
8. medical reciprocating saw according to claim 1, is characterized by: in tool lock system, and the cutter axis of guide (7) relies on cutter fixed cover (9) and the second steel ball (15) to be clamped by cutter (13).
9. the medical reciprocating saw according to claim 1 or 2 or 6, it is characterized by: when mounting cutter, turn cutter and screw switch (12), the second steel ball (15) that cutter screws in switch (12) carry its tools fixed cover (9) hole rotates, and then carry its tools fixed cover (9) motion, the inclined-plane on the inclined-plane squeezing knife tool axis of guide (7) that cutter fixed cover (9) is inner forces the cutter axis of guide (7) clamp-on tool (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510434434.7A CN105105818B (en) | 2015-07-22 | 2015-07-22 | A kind of medical reciprocating saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510434434.7A CN105105818B (en) | 2015-07-22 | 2015-07-22 | A kind of medical reciprocating saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105105818A true CN105105818A (en) | 2015-12-02 |
| CN105105818B CN105105818B (en) | 2018-04-03 |
Family
ID=54654121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510434434.7A Expired - Fee Related CN105105818B (en) | 2015-07-22 | 2015-07-22 | A kind of medical reciprocating saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105105818B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108175473A (en) * | 2018-02-12 | 2018-06-19 | 苏州益诺斯医疗科技有限公司 | A kind of saw blade clamp system of Medical vertical saw |
| CN108278346A (en) * | 2018-02-12 | 2018-07-13 | 苏州益诺斯医疗科技有限公司 | A kind of transmission mechanism of Medical vertical saw |
| CN111053589A (en) * | 2019-12-31 | 2020-04-24 | 苏州众泽医疗科技有限公司 | Medical reciprocating joint |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4260381A (en) * | 1978-12-21 | 1981-04-07 | Kaltenbach & Voight Gmbh & Co. | Dental handpiece |
| CN2644065Y (en) * | 2003-09-05 | 2004-09-29 | 力武电机股份有限公司 | Reciprocating gripper mechanism of electric saw blade |
| EP1563800A1 (en) * | 2004-02-17 | 2005-08-17 | Bien-Air Holding SA | Dental or surgical handpiece |
| CN102076273A (en) * | 2008-06-30 | 2011-05-25 | 麦德托尼克艾克斯欧麦德股份有限公司 | Chuck for reciprocating surgical instrument |
| CN104586465A (en) * | 2015-01-19 | 2015-05-06 | 鲁仁义 | Medical electric sawing drill with anti-shaking function |
-
2015
- 2015-07-22 CN CN201510434434.7A patent/CN105105818B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4260381A (en) * | 1978-12-21 | 1981-04-07 | Kaltenbach & Voight Gmbh & Co. | Dental handpiece |
| CN2644065Y (en) * | 2003-09-05 | 2004-09-29 | 力武电机股份有限公司 | Reciprocating gripper mechanism of electric saw blade |
| EP1563800A1 (en) * | 2004-02-17 | 2005-08-17 | Bien-Air Holding SA | Dental or surgical handpiece |
| CN102076273A (en) * | 2008-06-30 | 2011-05-25 | 麦德托尼克艾克斯欧麦德股份有限公司 | Chuck for reciprocating surgical instrument |
| CN104586465A (en) * | 2015-01-19 | 2015-05-06 | 鲁仁义 | Medical electric sawing drill with anti-shaking function |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108175473A (en) * | 2018-02-12 | 2018-06-19 | 苏州益诺斯医疗科技有限公司 | A kind of saw blade clamp system of Medical vertical saw |
| CN108278346A (en) * | 2018-02-12 | 2018-07-13 | 苏州益诺斯医疗科技有限公司 | A kind of transmission mechanism of Medical vertical saw |
| CN111053589A (en) * | 2019-12-31 | 2020-04-24 | 苏州众泽医疗科技有限公司 | Medical reciprocating joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105105818B (en) | 2018-04-03 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20180403 Termination date: 20210722 |