CN2185569Y

CN2185569Y - Medical strait handle electric bone saw and bone drill

Info

Publication number: CN2185569Y
Application number: CN 93245063
Authority: CN
Inventors: 张利剑
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-11-29
Filing date: 1993-11-29
Publication date: 1994-12-21
Anticipated expiration: 2003-11-29

Abstract

The utility model relates to a medical straight handle electric bone saw drill for bone drilling and bone sawing of orthopedic operations. An electric main machine and three machine heads are combined to respectively form an electric drill, an oscillating saw and a reciprocating saw. The electric main machine adopts full-closed form and a miniature motor starting protector. The connecting structure of the electric main machine and each machine head is formed by the way that the tail part of each machine head is provided with tail holes for sheathing on a front shell of the electric main machine. The machine head of a drilling machine adopts a planetary gear speed reduction structure. The machine head of the oscillating saw adopts a crankshaft structure. The machine head of the reciprocating saw adopts an eccentric disc structure. Because of the adoption of the unique mechanical structures, the medical straight handle electric bone saw drill has the advantages of flexible operation, small size, light weight and convenient portability.

Description

Medical strait handle electric bone saw and bone drill

This utility model belongs to medical apparatus and instruments.

At present, in the domestic bone surgery, skeleton is used two class operation tools, a class is manual, and another kind of is electronic.Electric bone surgery apparatus generally by external import, costs an arm and a leg, and has only the use of just having ready conditions of the senior hospital of minority.And domestic existing electric bone surgery apparatus function singleness can't satisfy the orthopedic surgery saw bone, bore the multiple needs of bone.

The purpose of this utility model is to provide a kind of function many, and promptly the medical operation electric bone saw of a tractor serves several purposes bores.

Technical solution of the present utility model is after being made up by a hermetic electronic main frame and three heads, to constitute electric drill respectively, swing saw, reciprocating sow.Specific practice is:

Electronic host machine part: micro machine is packed in the housing; motor shaft is connected with output shaft; output shaft is supported by sealed bearing; and by nut compressing; be contained in the housing; the back seat afterbody is equipped with seal socket, and the sealing starting drive is made up of electric switch, sealing ring and pressure ring, establishes micro machine on the housing and starts the protection structure.

The syndeton of electronic main frame and each head has uropore at each head afterbody, can be sleeved on the electronic main frame fore shell;

The rig head section: external gear shaft end and electronic host output shaft socket, its front end and planetary gear and internal gear engagement, by sealed bearing and pressing plate supporting, rig head front end is established three-jaw chuck;

The swing saw head section: the swing saw blade is by the outer shaft shoulder portion of fixed by nut at axle, fork is sleeved on the axle, precursor is connected with back seat, back seat can be sleeved on the precursor, driving gear and driven gear engagement, support by bearing respectively, bent axle and driven gear close-fitting, pad separates driven gear and fork;

The hacksaw head part: driving gear is by bearing supporting and driven gear engagement, and bearing and connecting rod are equipped with in the runner side, and by the bearing supporting, reciprocating saw blade is contained on the pedestal.

Owing to adopt the said structure form, then make multi-functional staight shank electric bone saw drilling tool that flexible operation is arranged, the transmission efficiency height, moment is big, and is safe in utilization, and volume is little, and lightweight advantage is the basic motive apparatus of bone surgery.

Fig. 1 is the electronic main frame cutaway view of this utility model

Fig. 2 is this utility model electric drill head cutaway view

Fig. 3 is this utility model swing saw head cutaway view

Fig. 4 is this utility model reciprocating sow head cutaway view

Fig. 5 is this utility model composition motor cutaway view

Carry out step explanation below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5:

Constitution state of the present utility model is as follows:

The sealer of electronic main frame is between seal socket and back seat, sealing ring be switch touch pole axis to the periphery, between pressure ring and the back seat, sealer is between housing and procapsid, above-described sealer is nonmetal sealing ring, as Fig. 1.

The sealed bearing of electronic main frame is between procapsid and motor output shaft, as Fig. 1.

The micro machine startup protection structure of electronic main frame is made of operation panel and safe block, and wherein an end of operation panel is fixed on the back seat, and safe block is that an end is fixed on the operation panel, and touches the tablet of utmost point position with the common gauge tap of operation panel, as Fig. 1.

The enclosed switch version of electronic main frame is by the sealer between seal socket and back seat, and touches the extremely composition of the sealing ring between periphery, pressure ring and the back seat at switch, as Fig. 1.

The malformation of electric drill head, swing saw head, the reciprocating sow head structure that is tightly connected is that the uropore of these heads all can be enclosed within on the electronic main frame procapsid, screw fastening with bolt, and form with bearing, pressing plate respectively, as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5.

The planetary gear speed-reduction structure of electric drill head is to be meshing with each other with the internal gear that is sleeved on its outside again by the planetary gear around external tooth and its, planetary gear, and forms so that bearing and pressing plate supporting are fixing, as Fig. 2.

The crankshaft structure of swing saw head is by driving gear and driven gear engagement, bent axle and driven gear close-fitting, and it is separated by pad, the other end of bent axle is fastening by gland, eccentric part overcoat bearing and contact formation with fork in the middle of the bent axle, wherein driving gear, driven gear are respectively by the bearing supporting, as Fig. 3.

The eccentric disc structure of reciprocating sow head is by the driving gear of bearing supporting and the driven gear engagement of bearing supporting, runner supports with bearing with connecting rod on the position in axle center relatively and is connected, and is formed with the driven gear close-fitting, as Fig. 4.

The connection protection structure of reciprocating sow head is by reciprocating saw blade, is sleeved on the pedestal of reciprocating saw blade end and connecting rod front end, the jackscrew on the pedestal, the external screw thread of reciprocating saw blade end; the female thread of the connecting rod front end screw that matches with the terminal external screw thread of reciprocating saw blade; the inner bolt hole of connecting rod inner bolt hole back forms, as Fig. 4.

Electronic host machine part: electronic main frame portion has sealing plug, and the startup of micro machine is controlled jointly by operation panel 4 and safe block 5, as Fig. 1.

Electronic main motor output shaft 12 can with electric drill head external tooth axle 21, the afterbody of the driving gear 31 of swing saw head and reciprocating sow head is connected, electronic main frame fore shell 15 can pack into each head uropore, and fastening with bolt 16, as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5.

Gear on the electric drill head

external tooth axle

21 and 20 engagements of the planetary gear around it, planetary gear 20 are meshed with the internal gear 19 that is enclosed within the outside again.The center fixation of planetary gear 20 is on drive, and suit three-jaw chuck 23 in the rotating shaft of drive, external tooth axle 21, planetary gear 20, internal gear 19 are all fixing with sealed bearing 18 and pressing plate 17 supportings.With three-jaw chuck 23 fixed drill bit, as Fig. 2.

The swing saw head section: driving gear 31 is by bearing 18 supportings, with driven gear 33 engagements by bearing 34 supportings.Bent axle 26 is connected with driven gear 33, establishes pad 32 therebetween, and the axle center of tight cover bearings in the middle of the bent axle 26 contact with fork 35 with the part of the axle decentraction of driven gear 33, and the other end of bent axle 26 is by gland 25 and bearing fixing, supporting.Nut 28 will be swung the outer shaft shoulder portion that saw blade 30 is fixed on axle 36, as Fig. 3.

The hacksaw head part: by the fixed driving gear 31 of bearing 18 supportings, with driven gear 39 engagements with the bearing supporting, runner 38 tight cover driven gear 39 thes tip of the axis.Connecting rod 42 ends are connected with bearing 40 off-centre with runner 38, and the front end of connecting rod 42 has female thread and interior bore hole 46, and the pedestal 44 of overcoat is connected reciprocating saw blade 45 with jackscrew 43 with connecting rod 42, as Fig. 4.

Electronic main motor output shaft 12 can be connected with the afterbody of motor drill bit external tooth wheel shaft 21, and electronic main frame fore shell 15 can pack into each rig head uropore, and fastening with nut 16, constitutes composition motor, as Fig. 5.

The hermetically sealed form that is characterised in that electronic main frame of the present utility model; the protection of safe block starts structure; the planetary reducer of electric drill head; the crankshaft drive structure of swing saw head; the eccentric disc drive mechanism of reciprocating sow head, connecting rod and saw blade be connected the protection form, the malformation of electronic main frame and each head mode that is tightly connected.

Work as power connection, electronic main frame procapsid 15 is packed into electrical drilling machine end to end behind the hole, tight a bolt 16, under operation panel 4 and safe block 5 common controls, micro machine starts, motor output shaft 12 drives external tooth axle 21, planetary gear 20, internal gear 19, drive successively, makes three-jaw chuck 23 rotations, thereby makes the drill bit work that is sandwiched in the three-jaw chuck 23.

When electronic main frame be connected with the swing saw head fastening after, micro machine is started, motor output shaft 12 drives driving gear 31, driven gear 33, bent axle 26 rotations successively, and the eccentric part of overcoat bearings in the middle of the bent axle 26 then drives fork 35 and swing saw blade 30 is swung fast.

When electronic main frame be connected with the reciprocating sow head fastening after, micro machine is started, motor output shaft 12 drives driving gear 31, driven gear 39, runner 38 successively and rotates, runner 38 moves back and forth with bearing 40 drivening rods 42 and reciprocating saw blade 45.

For reciprocating sow, when connecting rod 42 is connected with reciprocating saw blade 45, earlier reciprocating saw blade 45 ends there is the part of bolt, the inner bolt hole that is screwed into connecting rod 42 front ends is to interior bore hole 46, and then will be enclosed within jackscrew 43 on the pedestal 44 of their outsides and tighten and get final product.

Claims

1, the medical multifunctional electric bone saw bores and it is characterized in that:

Electronic host machine part: micro machine 9 is packed in the housing 11, motor shaft 10 is connected with output shaft 12, output shaft 12 is by sealed bearing 13 supportings, and compress by nut 14, be contained in the housing 15, back seat 8 afterbodys are equipped with seal socket 1, and the sealing starting drive is made up of electric switch 7, sealing ring 6 and pressure ring 3, establish micro machine on the housing 11 and start the protection structure;

The syndeton of electronic main frame and each head has uropore at each head afterbody, can be sleeved on the electronic main frame fore shell 15;

The rig head section: 21 terminal and electronic host output shaft 12 sockets of external tooth axle, its front end and planetary gear 20 and internal gear 19 engagements are by sealed bearing 18 and pressing plate 17 supportings.Rig head front end is established three-jaw chuck 23;

The swing saw head section: swing saw blade 30 is fixed on the outer shaft shoulder portion of axle 36 by nut 28, fork 35 is sleeved on the axle 36, precursor 37 is connected with back seat 24, back seat 24 can be sleeved on the precursor 15, driving gear 31 and driven gear 33 engagements, respectively by bearing 18, bearing 34 supportings, bent axle 26 and driven gear 33 close-fittings, pad 32 separates driven gear 33 and fork 35;

The hacksaw head part: driving gear 31 is by bearing 18 supportings and driven gear 39 engagements, and bearing 40 and connecting rod 42 are equipped with in runner 38 sides, and by bearing 34 supportings, reciprocating saw blade 45 is contained on the pedestal 44.

2, bore by the described medical multifunctional staight shank of claim 1 electric bone saw, the sealer 2 that it is characterized in that electronic main frame is between seal socket 1 and back seat 8, sealing ring 6 is to touch the utmost point 47 axially between periphery, pressure ring 3 and the back seat 8 at switch, sealer 48 is between housing 11 and procapsid 15, and above-described sealer is nonmetal sealing ring.

3, bore by the described medical multifunctional staight shank of claim 1 electric bone saw, the sealed bearing 13 that it is characterized in that electronic main frame is between procapsid 15 and motor output shaft 12.

4, bore by the described medical multifunctional staight shank of claim 1 electric bone saw; the micro machine startup that it is characterized in that electronic main frame protects structure to be made of operation panel 4 and safe block 5; wherein an end of operation panel 4 is fixed on the back seat 8; safe block 5 is that an end is fixed on the operation panel 4, and touches the tablet of the utmost point 47 positions with operation panel 4 common gauge taps.

5, bore electronic main frame by the described medical multifunctional staight shank of claim 1 electric bone saw, the enclosed switch version that it is characterized in that electronic main frame is by the sealer 2 between seal socket 1 and back seat 8, and forms at the sealing ring 6 that switch touches between the utmost point 47 peripheries, pressure ring 3 and the back seat 8.

6, bore by the described medical multifunctional staight shank of claim 1 electric bone saw, the malformation that it is characterized in that electric drill head, swing saw head, the reciprocating sow head structure that is tightly connected is that the uropore of these heads all can be enclosed within on the electronic main frame procapsid 15, screw fasteningly with bolt 16, and form with bearing 18, pressing plate 17 respectively.

7, bore by the described medical multifunctional staight shank of claim 1 electric bone saw, the planetary gear speed-reduction structure that it is characterized in that the electric drill head is to be meshing with each other with the internal gear 19 that is sleeved on its outside again by external tooth 21 and planetary gear 20, planetary gear 20 around it, and forms so that bearing 18 and pressing plate 17 supportings are fixing.

8, bore by the described medical multifunctional staight shank of claim 1 electric bone saw, the crankshaft structure that it is characterized in that the swing saw head is by driving gear 31 and driven gear 33 engagements, bent axle 26 and driven gear 33 close-fittings, and it is separated by pad 32, the other end of bent axle 26 is fastening by gland 25, eccentric part overcoat bearings and contact with fork 35 form in the middle of the bent axle 26, and wherein driving gear 31, driven gear 33 are supported by bearing 18 and bearing 34 respectively.

9, bore by the described medical multifunctional staight shank of claim 1 electric bone saw, the eccentric disc structure that it is characterized in that the reciprocating sow head is by the driving gear 31 of bearing 18 supportings and driven gear 39 engagements of bearing 34 supportings, runner 38 is connected with bearing 40 supportings with connecting rod 42 on the position in axle center relatively, and forms with driven gear 39 close-fittings.

10, bore by the described medical multifunctional staight shank of claim 1 electric bone saw; the connection protection structure that it is characterized in that the reciprocating sow head is by reciprocating saw blade 45, is sleeved on the pedestal 44 of reciprocating saw blade 45 ends and connecting rod 42 front ends, the jackscrew 43 on the pedestal 44, the external screw thread of reciprocating saw blade 45 ends; the female thread of the connecting rod 42 front end screws that match with reciprocating saw blade 45 terminal external screw threads, the inner bolt hole of connecting rod 42 inner bolt holes 46 back forms.