CN205307042U

CN205307042U - Safe abrasive drilling head of single -skin drum matter fluting

Info

Publication number: CN205307042U
Application number: CN201521129774.0U
Authority: CN
Inventors: 林健泽
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-30
Filing date: 2015-12-30
Publication date: 2016-06-15
Anticipated expiration: 2025-12-30

Abstract

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a safe abrasive drilling head of single -skin drum matter fluting. It includes the drilling rod and sets up in the cone drill bit of drilling rod one end, cone drill bit includes drill bit portion and sets up in the spherical probe portion on drill bit portion top, the surface of drill bit portion be the exasperate or the surface of drill bit portion is provided with a plurality of cutting edge structures, the surface of probe portion is smooth surface or exasperate. Because probe portion be the smooth surface or because the roughness of drill bit portion and the exasperate of probe portion different, utilize the characteristics that probe portion can't brill easily breaks the compact bone substance, when driling to the pedicle of vertebral arch, whether the operation doctor can judgement probe portion easily touch the compact bone substance to avoid drilling through the compact bone substance, appear the fracture of offside vertebral plate when having avoided the operation effectively with this or to the problem of patient's spinal cord and nervous damage.

Description

A kind of mono cortex safe crusher drill of fluting

Technical field

This utility model relates to technical field of medical instruments, especially a kind of mono cortex safe crusher drill of fluting.

Background technology

In spinal operation, especially in posterior cervical double door, single open-door operation, palpus row mono cortex grooving operations, only need to drill through one side bone cortex and compact bone in operation, and retain offside cortical bone, forming V-groove, current fluting often uses High speed drill, in abrasive drilling grooving process, need SC, in order to avoid penetrating offside cortical bone, cause slotting unsuccessfully, thus causing operative failure; And namely vertebral plate front is spinal cord and nerve root, if penetrating offside cortical bone very easily cause spinal cord, nerve root injury, cause paralysis; And in abrasive drilling grooving process, for forming V-groove position, need to constantly revising the shape of groove position, to reach V-type, but in reality is slotted, Chang Wufa forms the V-groove of standard, and this also leads to postoperative fluting portion and not easily merges or do not merge, and also can cause operative failure.

Therefore it provides a kind of safe and reliable boring bar tool, it it is current medical industry technical problem urgently to be resolved hurrily.

Utility model content

For the deficiency that above-mentioned prior art exists, the purpose of this utility model be in that to provide a kind of simple in construction, easy to use, accurate positioning, safe and reliable, the mono cortex of success rate of operation can be greatly enhanced slot safe crusher drill.

To achieve these goals, this utility model adopts the following technical scheme that

A kind of mono cortex safe crusher drill of fluting, it includes drilling rod and is arranged at the taper bit of drilling rod one end, described taper bit includes bit head and is arranged at the spheric probe portion on bit head top, the surface configuration that the surface of described bit head is matte or described bit head has some edge structures, the surface of described probe portion to be shiny surface or matte.

Preferably, the surface of described probe portion is matte, and the matte of described probe portion and the matte of bit head are constituted by the corundum being sprayed at probe portion or bit head surface, and the matte roughness of described probe portion is less than the surface roughness of bit head.

Preferably, the matte roughness of described bit head is less than 20 orders, and the matte roughness of described probe portion is 50 order-800 orders.

Preferably, the matte roughness of described probe portion is 300 orders, 400 orders or 500 orders.

Preferably, the matte of described bit head is made up of the double wedge protruding from bit head surface.

Owing to have employed such scheme, owing to probe portion is shiny surface or owing to bit head is different from the roughness of the matte of probe portion, utilize probe portion cannot bore brokenly the feature of compact bone easily; When pedicle of vertebral arch is holed, surgical doctor can judge whether probe portion touches compact bone easily, thus avoiding drilling compact bone, occurs the fracture of offside vertebral plate or the problem to patient's spinal cord and neural damage when efficiently avoid operation with this; Its simple in construction, easy to use, be capable of location of holing accurately, improve operation safety and success rate, there is very strong practical value and market popularization value.

Accompanying drawing explanation

Fig. 1 is the planar structure schematic diagram () of this utility model embodiment;

Fig. 2 is the planar structure schematic diagram (two) of this utility model embodiment.

Detailed description of the invention

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that this utility model can be defined by the claims and cover is implemented.

As depicted in figs. 1 and 2, a kind of mono cortex safe crusher drill of fluting that the present embodiment provides, it includes the taper bit of the drilling rod 1 that surface is shiny surface and the one end being arranged at drilling rod 1, and taper bit includes bit head 2 and is arranged at the spheric probe portion 3 on bit head 2 top; Wherein, the surface of bit head 2 is matte or has some sharp edge structures in the surface configuration of bit head, and the surface of probe portion 3 then adopts shiny surface or matte as the case may be. So, when when performing the operation, available rongeur or other drill bits play a boring at the inserting needle hole place of the cortical bone side of pedicle of vertebral arch, again by whole crusher drill in rotary manner by drilling in pedicle of vertebral arch, when probe portion 3 touches the compact bone of pedicle of vertebral arch, owing to probe portion 3 is shiny surface or owing to bit head 2 is different from the roughness of the matte of probe portion 3, make surgical doctor can judge whether probe portion 3 puts in place easily, thus avoiding drilling compact bone, to patient's spinal cord and neural damage when efficiently avoid operation with this.

For ensureing the drilling effect of probe portion 3 and bit head 2, the surface of the probe portion 3 of the present embodiment is matte, the matte of probe portion 3 and the matte of bit head 2 are constituted by the corundum being sprayed at probe portion 3 or bit head 2 surface, simultaneously, for improving the recognizability of boring location, the matte roughness of the probe portion 3 of the present embodiment is less than the surface roughness of bit head 2.

Meanwhile, by the statistics of the testing data that crusher drill is actual and analysis, such as following table (table has illustrated the matte of different meshes to cortical bone and compact bone penetrate difficulty):

Analyzing based on above-mentioned detection, the matte roughness of the bit head 2 of the present embodiment is less than 20 orders, and the matte roughness of probe portion 3 is 50 order-800 orders. Wherein, the matte roughness of probe portion 3 is 300 orders, 400 orders or 500 orders.

It addition, as in figure 2 it is shown, the matte of the bit head 2 of the present embodiment also can be made up of the double wedge 4 protruding from bit head 2 surface, to utilize what the surface texture that double wedge 4 is formed realized bit head 2 to drill through function.

The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in scope of patent protection of the present utility model.

Claims

1. the mono cortex safe crusher drill of fluting, it is characterized in that: it includes drilling rod and is arranged at the taper bit of drilling rod one end, described taper bit includes bit head and is arranged at the spheric probe portion on bit head top, the surface configuration that the surface of described bit head is matte or described bit head has some edge structures, the surface of described probe portion to be shiny surface or matte.

2. a kind of mono cortex safe crusher drill of fluting as claimed in claim 1, it is characterized in that: the surface of described probe portion is matte, the matte of described probe portion and the matte of bit head are constituted by the corundum being sprayed at probe portion or bit head surface, and the matte roughness of described probe portion is less than the surface roughness of bit head.

3. a kind of mono cortex safe crusher drill of fluting as claimed in claim 2, it is characterised in that: the matte roughness of described bit head is less than 20 orders, and the matte roughness of described probe portion is 50 order-800 orders.

4. a kind of mono cortex safe crusher drill of fluting as claimed in claim 3, it is characterised in that: the matte roughness of described probe portion is 300 orders, 400 orders or 500 orders.

5. a kind of mono cortex safe crusher drill of fluting as claimed in claim 1, it is characterised in that: the matte of described bit head is made up of the double wedge protruding from bit head surface.