CN2387869Y

CN2387869Y - Dustproof miniature electric craniotome

Info

Publication number: CN2387869Y
Application number: CN 98212196
Authority: CN
Inventors: 陈德荣; 王晓玲
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-08
Filing date: 1998-04-08
Publication date: 2000-07-19
Anticipated expiration: 2008-04-08

Abstract

The utility model relates to a novel craniotome tool, which is composed of an electric drill, a saw head and a miniature saw blade. When a skull is sawn, a small hole is drilled firstly in an occiput by the electric drill, and then the saw blade and a duramater protection plate are put into the hole. The skull can be quickly dissected by the method that the saw blade tests at a low speed, cuts at a high speed, and advances at an even speed. The utility model has the biggest advantage that a cutting method is novel and unique, and the method effectively overcomes the disadvantage that the spattering and the permeation of bone powder can cause environmental pollution and are harmful to a human body. The utility model is one of ideal substitutes in the craniotome aspect of pathology dissection instruments at present.

Description

The dustproof miniature type electric craniotome

This utility model relates to a kind of novel cranium instrument of opening in the pathological anatomy apparatus.

In pathological anatomy, often need cut people's skull.Common have hacksaw, bladed saw, plaster saw and an electronic circular saw.The former has the ancient and time-consuming shortcoming of labourer, the latter to have that easy damage cerebral dura mater, bone meal spray, bone meal fills the air, expensive deficiency.

The purpose of this utility model: the miniature electric craniotome that is a kind of few dirt of invention.

This utility model is achieved in that according to the downward principle of the sawdust of sweep-saw, adopt the simplest the most frequently used mechanical break-in structure, rotatablely moving of motor become up and down reciprocating motion, and the bone meal that makes in the sawing to be produced is nearly all gone to intracranial from sutura.Its transmission principle is: drive the power transmission shaft (2) at eccentric rear portion with electric drill, roll about making in the horizontal shape chute of eccentric shaft axle sleeve (4) on the axis of guide on the eccentric, thereby the saw blade that drives the axis of guide (7) lower end is made cutting movement up and down reciprocatingly.Because the thickness of skull is 10 millimeter, so, eccentric throw is arranged on any point in the 2.5-10 millimeter scope gets final product, be Cui wherein with 4 millimeters places.The dustproof miniature type electric craniotome is made up of electric drill and saw head, saw blade three parts.(the excuse cranium is irregular sphere during use, so should on skull, make a call to an aperture earlier) with electric drill, the chuck of electric drill is put in the shell (8) of saw head and clamp power transmission shaft (2), cerebral dura mater protective plate and saw blade are put in the aperture of just beating, after examination is sawed at a slow speed, high-speed cutting again, average rate is advanced, and can cut skull open soon.

This utility model is compared with the existing electronic cranium instrument of opening, sawing method uniqueness not only, and have simple in structure, reasonable in design, pattern is novel, no bone meal sprays and fill the air, not fragile cerebral dura mater, speed are fast, assembling easily, unpick and wash advantages such as convenience, low price.

Be further described below in conjunction with accompanying drawing: Fig. 1 is a sketch map of the present utility model; Fig. 2 is the profile of Fig. 1.

Among the figure: (1) is the manhole appendix of electric drill chuck key, (2) be the power transmission shaft at eccentric rear portion, (3) be the bearing that is fixed on the bearing block, (4) are eccentric shaft and the axle sleeves on the eccentric, and (5) are the stop Luo silks on the snap ring, (6) be the translot that is fixed on the axis of guide, (7) be the axis of guide that runs through on a bearing block tube wall and the saw shell, (8) are the shells of saw head, and (9) are the tube walls of bearing block, (10) be the snap ring that is fixed on the axis of guide (7), (11) are the endoporus of bearing block tube wall.

Fig. 3 is three kinds of shapes of saw blade: linear, triangle and arc.They are thinner on one side, Yi Bian tooth is arranged, saw blade length is 15-30 centimetre, and wide is 5-10 centimetre.

Fig. 4-the 1st is welded on the tinsel on the cerebral dura mater protective plate, Fig. 4-the 2nd, and five kinds of shapes of hard brain meninges protective plate: semicircle, circular, ellipse, rectangle, rectangle are fallen two jiaos.Hard brain meninges protector is made up of tinsel (4-1) and cerebral dura mater protective plate (4-2).

For example, the utility model will be further described below.

Embodiment: a kind of dustproof miniature type electric craniotome.

With reference to accompanying drawing: electric drill is the J1Z-CD-6C model of producing with Chengdu Electric Tools Factory, and its saw shell (8) is made cylindrical shape by rustless steel, approximately greater than the fuselage cover of electric drill collet rear; The bearing block that metal is done is put in the saw shell (8), nearby make a call to the symmetric aperture that can put the axis of guide into that runs through a saw shell and bearing block tube wall in the middle part of edge with being drilled in a saw shell then, again bearing, power transmission shaft, eccentric, eccentric shaft and axle sleeve, horizontal shape chute, the axis of guide in certain sequence, put in the shell (8) of saw head respectively, and horizontal shape chute (6) is welded on the axis of guide (7), the axis of guide (7) and shell (8) and bearing block tube wall are to fix to run through mode, move up and down during the axis of guide (7) can only be on shell and bearing block tube wall to wearing property hole.The front end of a saw shell is the stainless steel cover sealing of usefulness.Saw blade is fixed on the lower end of the axis of guide (7) by snap ring (10) and stop Luo silk (5).Be the stainless steel stent that is welded on the saw shell around the saw blade, having the import and export of stop Luo silk in the forward, central part of support; Have the import and export of a treaty in bracket base middle part and the corresponding position of saw blade, limit the up of the swinging arc of saw blade and anti-bone meal greater than saw blade.In addition, four in the microsprings device of making of the metal on the old-fashioned lamp socket is installed in respectively near four jiaos of bracket base, forms spring Luo bar, and when firmly when pressing down, the depth of cut of saw blade is deepened, otherwise, then shoal.The cerebral dura mater protector is to make with fine wire (4-1) and ultrathin sheet metal (4-2), and is connected on the support with welding manner.

Claims

1, " dustproof miniature type electric craniotome " is the device of vertical shape sawing skull plate, it is characterized in that this device is used as power with electric drill, the mode of clamping with the power transmission shaft (2) of the fixed eccentric of bearing (3) back by chuck links, eccentric shaft and axle sleeve (4) are arranged on its eccentric, the horizontal shape chute (6) that is welded on the axis of guide (7) is covered axle sleeve, cross at the axis of guide (7) on the basis of a saw shell (8) and bearing block (9), saw blade is fixed on the lower end of the axis of guide with stop screw (5), when the electric drill propeller shaft sleeve moves clockwise in the enclosure, axle sleeve rolls about also doing in the translot on the axis of guide, so the drive saw blade carries out cutting movement up and down reciprocatingly.

2, craniotome according to claim 1 is characterized in that: the eccentric throw of eccentric shaft (4) is the 2.5-10 millimeter.

3, craniotome according to claim 1 is characterized in that: a saw shell (8) is cylindrical.

4, craniotome according to claim 1 is characterized in that: the side at a saw shell near-end middle part has the manhole appendix (1) of a chuck handle.

5, craniotome according to claim 1 is characterized in that: miniature saw blade (Fig. 3) be shaped as rectangle, triangle and arc, Yi Bian tooth is arranged, another side is thinner, and anodontia.The length of saw blade is the 15-30 millimeter, this 5-10 millimeter of width.

6, craniotome according to claim 1, the feature of its cerebral dura mater protective plate (4-2) be semicircle, circular, Sui is circular, rectangle, rectangle are fallen anterior angle.