CN2109819U - Cantilever mould trephination apparatus - Google Patents

Abstract

The utility model discloses a trephination apparatus which is used for opening skull quickly in the autopsy work of the legal medical expert or the medicine. The body of the apparatus is an electric craniotome, and the electric craniotome is connected with a cantilever rod through a bust. A tightly positioned and locked mechanism is connected with the middle part of the cantilever rod, and a nut and a pressure spring are arranged on one end of the cantilever rod. The cantilever rod and the tightly positioned and locked mechanism are formed to an unfixed whole body, and a feeding adjusting mechanism is arranged on the lower part of the craniotome, and as a result, the utility model has the function that the cantilever mould can adjust a saw blade automatically. The utility model has the advantages of high quality of the saw cut, flexible sawing, rapidity, and labor saving.

Description

Cantilever mould trephination apparatus

This utility model relates to a kind of surgical instruments, opens the sawing device of cranium in specifically a kind of postmortem work fast.

At present in the postmortem work of police and judicial, often need open cranium sampling carrying out pathology and otherwise check and identify, with ascertain the cause of death etc.The traditional craniotomy instrument is a hacksaw, back and forth cuts with manpower.Many uses is electric craniotome now, promptly drives a saw blade by motor and gear and cuts.Use these two kinds of existing problems of instrument to be, when a people cuts on the one hand, also need others to assist to buttress head and move the upset corpse, workload is big, and very inconvenient, the edge of a knife was difficult for aiming at when rotative saw one enclosed on head on the other hand, and the depth of cut is also wayward, and artificial destruction the original appearance situation of brain in the skull, the carrying out that is unfavorable for identifying work.

The purpose of this utility model just provides a kind of saving manpower, and is easy and simple to handle, stablizes, drives the cranium instrument accurately and rapidly, and one man operation can be opened skull quickly and accurately, and sampling is identified.

This utility model is achieved in that with electric craniotome and as the cutting main body electric craniotome is joined by a clamp and a cantilever lever that location locking mechanism is connected with the middle part of cantilever lever, is socketed with spring and nut at an end of cantilever lever.Location locking mechanism parts such as colludes by screw rod, locking nut, axle, bearing, bearing block, rotating shaft, clamping and connects and composes.Regulate location locking mechanism, make clamp mechanism clamp skull, with this device location, the saw blade of the electric craniotome that connects by cantilever lever is aimed at the side of skull, rotates cantilever lever and drives electric craniotome and move in a circle, and can implement sawing and operate.Under the regulating and controlling of belled spring and nut on the cantilever lever, the applying of total maintenance of electric craniotome and skull surface realizes automatic pattern.By one man operation, the whole commentaries on classics saw one of skull can be enclosed like this, and the corpse that need not overturn, and saw kerf energy complete matching, realized opening fast cranium.

Below in conjunction with accompanying drawing this utility model is further described.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is that the A-A of cantilever lever and detent mechanism connecting part is to cutaway view;

Fig. 3 clamps the C-C collude with the bearing block connecting portion to cutaway view;

Fig. 4 is that the B-B of electric craniotome bottom is to cutaway view.

As shown in Figure 1, an end of cantilever lever 3 has screw thread, and nut 5 and spring 4 are housed, and the other end clamps electric craniotome 1 by securing member and clamp 2.What be connected with the cantilever lever middle part is location locking mechanism, includes screw rod 6, locking nut 7, axle 8, bearing 9,10, bearing block 11,12, rotating shaft 13,14, clamps and colludes 15 parts such as grade.Axle 8 is a hollow axle, is threaded with screw rod 6.Screw rod 6 passes axle 8, its lower end socket bearing 10 and bearing block 12, and its upper end is connected to handle 16.The bottom socket bearing 9 and the bearing block 11 of axle 8, the hole at cantilever lever 3 middle parts is passed on the top of axle 8, and the top is by locking nut 7 lockings.With reference to Fig. 1, Fig. 2, have a side opening at cantilever lever middle part, bolt 29 is rotatably connected on the axle 8 in the side opening, makes cantilever lever 3 keep horizontal location under spring 4 and electric craniotome effect.With reference to Fig. 1, Fig. 3, clamp and to collude 15 and be connected with bearing block 11,12 by rotating shaft 13,14.Colluding 15 top in clamping has two holes, a circular hole, and a prolate hole, the circular hole place joins by the locating hole that rotating shaft 14 and bearing block 12 sidewalls stretch out, and the locating hole that stretch out by the rotating shaft 13 and the bearing block 11 sidewall bottoms on top at place, prolate hole joins.Like this, after unclamping locking nut, when rotary screw 6 vertical handles 16 descend screw rod 6, the bearing block 12 that joins with screw rod 6 descends thereupon, make to clamp and collude 15 tops and descend, and the bearing block 11 that joins with axle 8 is motionless, makes rotating shaft 13 become fulcrum, clamping is colluded and is done lever motion, and open its bottom.Collude the gathering of 15 bottoms and clamp skull otherwise screw rod 6 risings are then clamped, make this device location, tighten locking nut 7 then, screw rod 6, axle 8 and cantilever lever 3 are fixed as one, this moment rotary handle 16, under bearing 9,10 effect, cantilever lever drives electric craniotome 1 and moves in a circle.The saw blade 26 of electric craniotome 1 has been aimed at the skull sidepiece and has been implemented sawing.Clamping is colluded 15 and is had three, is 120 ° of angles and distributes, and forms 3 stable support like this, clamps skull, supports craniotome.

For guaranteeing the concordance of the saw blade depth of cut, be provided with the feed governor motion in the bottom of electric craniotome 1.With reference to Fig. 1, Fig. 4, the feed governor motion is made up of adjusting screw(rod) 17, adjusting nut 18, sleeve pipe 19, baffle plate 20, spring 21, adjusting rod 22, connecting plate 23, axle 24 and bearing 25.Bearing 25 is enclosed within on the axle 24, axle 24 is positioned on the connecting plate 23, two adjusting rods 22 stretch out from connecting plate 23 two ends, pass axle bed 30, fixing by baffle plate 20, adjusting screw(rod) 17 passes baffle plate 20 middle parts and is connected on the axle bed 30, and spring 21 is set on the adjusting screw(rod) 17, withstands between baffle plate 20 and the axle bed 30.Sleeve pipe 19 is enclosed within on the adjusting screw(rod) 17, and is positioned baffle plate 20 outsides by adjusting nut 18.Screw adjusting nut 18, sleeve pipe 19 heads on baffle plate 20 and is being with adjusting rod 22 and bearing 25 reaches, otherwise unclamps nut 18, then moves after making bearing 25 under spring 21 effects.Bearing 25 leans the side at skull, and it moves forward and backward, and actually makes the saw blade adverse movement, thereby realizes the control of the depth of cut, and the situation of sawing bad brain when having avoided opening cranium takes place.

For the bone slag that saw blade is cut away does not outwards splash, also be provided with safety guard 27 on the top of the saw blade 26 of electric craniotome material 1.This cover can be positioned on the axle bed 30.On safety guard 27, also be provided with hairbrush 28, be fixed between safety guard bottom surface and the saw blade, play a part to remove bone foam and other foreign bodies, saw blade is kept clean at work, reduce power attenuation by securing member.

This utility model adopts the cantilever pattern to regulate the new construction of saw blade automatically, makes out cranium convenient, accurate, rapid, laborsaving, sawline quality height.Install safety guard additional, make the device handling safety reliable.This craniotome can not be subjected to environmental limitations, uses whenever and wherever possible, and flexible, adaptability is strong, and a people can finish out cranium work.This device volume is little, and is in light weight, easy to carry, is the ideal cranium apparatus of opening of police and judicial department.

Claims (7)

1, a kind of cantilever pattern craniotome comprises electric craniotome 1, it is characterized in that electric craniotome 1 joins by clamp 2 and cantilever lever 3, and location locking mechanism is connected with the middle part of cantilever lever 3, and an end of cantilever lever 3 is socketed with spring 4 and nut 5.

2, cantilever pattern craniotome according to claim 1, it is characterized in that location locking mechanism is colluded 15 and formed by screw rod 6, locking nut 7, axle 8, bearing 9,10, bearing block 11,12, rotating shaft 13,14, clamping, screw rod 6 passes axle 8, its lower end socket bearing 10 and bearing block 12, the bottom socket bearing 9 and the bearing block 11 of axle 8, cantilever lever 3 middle parts are passed on its top, and the top is by locking nut 7 locking, clamp to collude 15 and be connected with bearing 11,12 by rotating shaft 13,14.

3, cantilever pattern craniotome according to claim 2 is characterized in that clamping and colludes 15 and have three, is 120 ° of angles and distributes.

4, cantilever pattern craniotome according to claim 1 is characterized in that the bottom of electric craniotome 1 is provided with the feed governor motion.

5, cantilever pattern craniotome according to claim 4 is characterized in that the feed governor motion by adjusting screw(rod) 17, and adjusting nut 18, axle sleeve 19, baffle plate 20, spring 21, adjusting rod 22, connecting plate 23, axle 24 and bearing 25 are formed.

6, according to claim 1 or 2 or 4 described cantilever pattern craniotomes, it is characterized in that the top of the saw blade 26 in the electric craniotome 1 also is provided with safety guard 27.

7, cantilever pattern craniotome according to claim 6 is characterized in that safety guard is provided with hairbrush 28.