WO2009018720A1 - Powered bone cutter - Google Patents

Powered bone cutter Download PDF

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Publication number
WO2009018720A1
WO2009018720A1 PCT/CN2008/001431 CN2008001431W WO2009018720A1 WO 2009018720 A1 WO2009018720 A1 WO 2009018720A1 CN 2008001431 W CN2008001431 W CN 2008001431W WO 2009018720 A1 WO2009018720 A1 WO 2009018720A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
blade
guide plate
handle
chain
endless chain
Prior art date
Application number
PCT/CN2008/001431
Other languages
French (fr)
Chinese (zh)
Inventor
Ximing Zhou
Original Assignee
Beijing Montagne Medical Device Co., Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/14Surgical saws ; Accessories therefor
    • A61B17/149Chain, wire or band saws

Abstract

A powered bone cutter includes a cutting blade (2) and a handle (1). The cutting blade (2) is mounted on the handle (1) and said cutting blade (2) includes an endless chain and a guide plate (5). The endless chain is mounted on the periphery of the guide plate (5) and consists of tooth-edges (3) and chain links (4) for connecting the adjacent tooth-edges (3). An electric engine (6) is mounted in the handle (1), and the electric engine (6) drives the endless chain of the cutting blade (2) by transmission device to move around the periphery of the guide plate (5).

Description

Electric bone knife FIELD

The present invention relates to an orthopedic bone knife, particularly to an orthopedic bone electric knife. Background technique

Electric osteotome prior art, as described in U.S. Patent No. US6113618, a front end comprising a connector mounted blade and a handle, the blade linker, the linker may be perpendicular to the rear of the handle about a longitudinal central axis back and forth. This electric knife bone cutting can only swing in one direction, the direction is not flexible conversion cut. Bone and bulky electric knife, a large area of ​​the cutting operation.

SUMMARY

The present invention solves the technical problem is to provide a cutting direction can be controlled, flexibility, small size, small bone cutting area of ​​an electric knife.

Electric osteotome according to the present invention, includes a blade and a handle, a blade mounted on the handle, the blade comprises endless chain and the guide, the endless chain mounted on the outer periphery of the guide plate, the endless chain comprising a toothed edge and a chain plate, chain plate connecting adjacent tooth edges, mounted outside the motor, the motor drives the endless chain along the circumferential movement of the handle guide.

Electric osteotome according to the present invention, the tooth edges designed to facilitate cutting into different shapes, such as a bidentate crescent-shaped, single and multi-triangular triangular tooth like teeth, the number of teeth on each blade may be a single tooth , two or more. Each blade assembly may further comprise two individual teeth, the two individual teeth inclined in opposite directions in the transverse direction relative to the direction of movement of the blade assembly.

Electric osteotome present invention, the outer periphery of the guide plate is provided a recess, the lower end of the tooth edge is inserted in the recess. Chain sheet edges between adjacent teeth is connected to the outer two-piece or monolithic external connection, connected to the monolithic outer side is on the same or different intervals.

Electric osteotome present invention, the outer periphery of the guide plate is provided a protrusion, the lower end of a double-blade teeth across the projection on the outer periphery of the guide plate. All of adjacent toothed chain between the sheet edges connected to the monolithic connection.

Electric osteotome present invention, the distal end of the handle is provided a sprocket, the sprocket mounted on the drive shaft, the blade together with the endless chain over the sprocket. Motor output shaft is coupled with the driving gear, the driving gear and the driven gear engaging the drive shaft.

Osteotome motor driven by the micromotor according to the present invention, the driving gear drives the driven gear movement, the blade drive shaft sprocket and endless chain common movement around the outer periphery of the guide plate. Electric tool according to the present invention, the bone can be flexibly converted angle of cut, the cutting operation area is small, convenient for orthopedic slotted, can be in place osteotome, the bone and small electric knife, and easy to use.

BRIEF DESCRIPTION

1 is a schematic electric osteotome according to the invention;

FIG 2 is a cross-sectional view of the electric osteotome present invention;

3 is a schematic of a first embodiment of a blade of an electric osteotome present invention; FIG. 4 is a schematic view of a first embodiment of the guide plate electric osteotome according to the invention; FIG. 5 is a second motor of the present invention osteotome a schematic view of an embodiment of the guide plate; FIGS. 6a to 6d are schematic electric several tooth edges osteotome according to the invention, wherein the left side is a front view of the tooth edges, are right side sectional view AA of the corresponding blade assembly, FIG. 6a and 6b illustrate two exemplary embodiments of the tooth edges of the first embodiment of the present invention, FIGS. 6c and 6d shows a second embodiment blade assembly two exemplary embodiments of the present invention;

FIG 7 is a schematic diagram of two exemplary sheet may be used for an electric chain osteotome according to the present invention;

Connection relationship between FIGS. 8a to 8d shows electric chain osteotome sheet of the present invention with the tooth edges, wherein Figure 8a shows a two-piece outer link plate is connected, FIG. 8b shows the same side chain is connected to a monolithic chip, Figure 8c shows the opposite side chain of a single sheet of spaced outer connector, FIG. 8d shows the connection piece monolithic chain.

detailed description

Exemplary embodiments of the present invention will be described. As shown in FIG. 1 and FIG. 2, the electric bone knife blade of the present invention includes a handle 1 and 2, the blade 2 is mounted on a handle. The insert 2 comprises an endless chain and the guide plate 5, as shown in FIG. Endless chains attached to the outer periphery of the guide plate 5, the tooth edges endless chain comprising chain pieces 3 and 4, FIG. 7 shows the electric chain osteotome sheet of the present invention. Teeth on the blade assembly 3 may be a single or multiple. The handle 1 is mounted a motor 6, 6 may be circumferential movement of the motor 5 by an outer actuator driving the endless chain along the guide plate. The front of the handle 1 is provided a sprocket 8, the sprocket 8 is mounted on the drive shaft 7. Insert 2 endless chain 8 over the sprocket. Motor drive gear 6 engaged with the drive shaft 10 of the driven gear 7 9. Osteotome electric motor 6 is driven by a drive gear 10 drives the driven gear 9 motion, sprocket drive shaft 7 drives an endless chain 8 around the blade 2 moving guide plate 5 of the outer periphery.

According to a first embodiment of the present invention, shown in Figure 4, the outer periphery of the guide plate 5 is provided a recess, the lower end of the blade assembly 3 is inserted in the groove, and can slide in the groove. FIG. 8a to 8c, the chain link plate 4 can be connected to the two-piece outer sheet 3 between the tooth edges, on the same side of the chain-chip monolithic or connected monolithic spacer chain exclusive side of the outer sheet is connected. The tooth edges of the teeth 3 may be a bidentate crescent. It is to be understood that the tooth edges of the teeth 3 in any other form known in the art may also be employed.

According to a second embodiment of the present invention, shown in Figure 5, the outer periphery of the guide plate is provided with projections 5, blade assembly 3 to the lower end opening of the double structure, and straddles the outer periphery 5 of the guide protrusion. Chain connection mode using the sheet 4 adjacent to the monolithic blade assembly 3, shown in Figure 8d. The tooth edges of the teeth 3 may be a plurality of triangular teeth, shown in Figure 6b, may be, the shape 6a 6c and 6d shown in FIG. Wherein, each blade assembly in FIG. 6d 3 comprises two separate teeth, both individual teeth inclined in opposite directions in the transverse direction relative to the direction of movement of the blade assembly. It is to be understood that the tooth edges of the teeth 3 in any other form known in the art may also be employed.

Although the embodiment has been described with reference to specific embodiments of the present invention, it is to be understood that the present invention can be used technically equivalent component parts to be replaced, and that various modifications and variations to the invention without departing from the scope of the invention. REFERENCE NUMERALS

A handle, blade 2, blade assembly 3, 4 chain plate, guide plate 5, a motor 6, shaft 7, a sprocket, the driven gear 9, the drive gear 10.

Claims

An electric osteotome comprising a blade (2) and a handle (1), the blade (2) mounted on the handle (1), said blade (2) comprises an endless chain and the guide plate (5), mounted endless chain on the outer periphery of the guide plate (5), the endless chain comprising a blade assembly (3) and links (4), links (4) connecting adjacent tooth edges (3), the handle (1) mounting the motor (6), an outer circumferential movement of the motor (6) via a transmission drives the fans circulating chain along said guide plate (5), characterized in that the outer periphery of the guide plate (5) is provided a recess, the lower end of blade assembly (3) inserted in the said inner recess and can slide along the groove.
Bone motor according to claim 1 of the knife, wherein the sheet between the chain (3) (4) is connected to the outer two-piece or single-piece attachment to the outer edges of adjacent teeth.
Bone motor according to claim 2 of the knife, wherein the blade assembly adjacent the outer sheet monolithic chain (4) between (3) is connected to the same side or different side of the spacer.
An electric osteotome comprising a blade (2) and a handle (1), the blade (2) mounted on the handle (1), said blade (2) comprises an endless chain and the guide plate (5), mounted endless chain on the outer periphery of the guide plate (5), the endless chain comprising a blade assembly (3) and links (4), links (4) connecting adjacent tooth edges (3), the handle (1) mounting the motor (6), an outer circumferential movement of the motor (6) via said transmission means for driving the endless chain along said guide plate (5), characterized in that the outer periphery of the guide plate (5) is provided a protrusion (3) is the lower end of the blade assembly double open structure, so that said blade assembly (3) able to straddle the guide plates
(5) the outer periphery of the projection, and can slide along the projection.
Bone motor according to claim 4, wherein the knife, characterized in that the sheet between the chain (3) (4) is connected monolithically connected to the inner edges of adjacent teeth.
The electric osteotome claim 1 or claim 4, wherein a single or a plurality (3) of the teeth of the blade assembly.
The electric osteotome claim 1 or claim 4, wherein said blade assembly (3) having two separate teeth, the teeth in two separate blade assembly relative to the direction of movement the lateral direction is inclined in the opposite direction.
Motor according to claim 4 or claim osteotome 1, characterized in that the handle (1) of the front end of the sprocket (8), the sprocket (8) is mounted on the drive shaft (7), the blade ( on the endless chain 2) over the sprocket (8).
Motor according to claim 4 or claim osteotome 1, characterized in that, (9) engaging the motor (6) of the drive gear (10) with the drive shaft (7) of the driven gear.
PCT/CN2008/001431 2007-08-08 2008-08-06 Powered bone cutter WO2009018720A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200710120042.9 2007-08-08
CN 200710120042 CN101361670A (en) 2007-08-08 2007-08-08 Electric osteotome

Publications (1)

Publication Number Publication Date
WO2009018720A1 true true WO2009018720A1 (en) 2009-02-12

Family

ID=40340943

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/001431 WO2009018720A1 (en) 2007-08-08 2008-08-06 Powered bone cutter

Country Status (2)

Country Link
CN (1) CN101361670A (en)
WO (1) WO2009018720A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014527859A (en) * 2011-07-27 2014-10-23 ストライカー・アイルランド・リミテッド Surgical sagittal saw body, and a blade cartridge having a blade bar and a reinforcing rib formed integrally
KR101825991B1 (en) 2016-08-10 2018-02-06 인제대학교 산학협력단 Device for barrel vault osteotomy

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1571926A (en) * 1976-03-19 1980-07-23 Hamer Geerd Cutting device
US4250625A (en) * 1979-08-13 1981-02-17 Alfred Reif Miniature blade device
CN87211413U (en) * 1987-08-04 1988-03-23 中国人民解放军88医院 Electric bone saw with all-angle swing
US5133728A (en) * 1990-01-05 1992-07-28 Petersen Thomas D Gall-resistant ribbed surgical saw blade
US5725530A (en) * 1996-06-19 1998-03-10 Popken; John A. Surgical saw and methods therefor
US20070073303A1 (en) * 2005-09-09 2007-03-29 Namba Robert S Bone-cutting circular saw
WO2008011409A2 (en) * 2006-07-17 2008-01-24 Arthrosurface Incorporated System and method for tissue resection
CN201048963Y (en) * 2007-07-04 2008-04-23 北京蒙太因医疗器械有限公司 Electric osteotome

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1571926A (en) * 1976-03-19 1980-07-23 Hamer Geerd Cutting device
US4250625A (en) * 1979-08-13 1981-02-17 Alfred Reif Miniature blade device
CN87211413U (en) * 1987-08-04 1988-03-23 中国人民解放军88医院 Electric bone saw with all-angle swing
US5133728A (en) * 1990-01-05 1992-07-28 Petersen Thomas D Gall-resistant ribbed surgical saw blade
US5725530A (en) * 1996-06-19 1998-03-10 Popken; John A. Surgical saw and methods therefor
US20070073303A1 (en) * 2005-09-09 2007-03-29 Namba Robert S Bone-cutting circular saw
WO2008011409A2 (en) * 2006-07-17 2008-01-24 Arthrosurface Incorporated System and method for tissue resection
CN201048963Y (en) * 2007-07-04 2008-04-23 北京蒙太因医疗器械有限公司 Electric osteotome

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