CN2478552Y - Multi-functional self-stopping hand drill - Google Patents

Abstract

A multifunctional self-stop hand drill comprises a rocker, a splicing pole and a drill bit. The splicing pole is fixedly connected with the rocker, and the other end of the splicing pole is provided with an interface hole. A half-crescent desk type convex is arranged on the deep internal wall of the interface hole. A joint of the drill bit can be clipped into the interface hole. The end butt of the joint, which is positioned at the coordination point with the half-crescent desk type convex, is cut into a half-crescent type concave desk, and a notch is dug on the half-crescent type concave desk at the contact point of the half-crescent type convex in the interface hole and the half-crescent type concave desk. The butt end of the whole joint is 7 shaped. The utility model can be conveniently connected with a plurality of drill bits, and can safely and promptly finish the self-stop of the multifunctional hand drill of the operation.

Description

Multi-functional automatic stop bitbrace

This utility model relates to a kind of medical apparatus and instruments of the usefulness of performing the operation, and refers in particular to a kind of bitbrace of doing brain section or bone surgery.

At present, the boring in operation of brain section and the bone surgery uses different bitbraces or electric drill to carry out respectively.Drill bit easily taking place during existing hand drill for craniotomy bone hole pierce in the brain, causes the serious consequence of brain injury, and must successively use the drill bit of two kinds of different structures that the bone hole is met the requirements.So both loaded down with trivial details, time-consuming again, on average bore a bone hole and take about ten minutes.And the neurosurgery emergency operation is usually seized every minute and second, and time is life, therefore, only bores the bone hole and must delay rescue time half an hour above (boring 4 bone holes when opening cranium at least).And the electric drill cost height of using in the operation need provide power supply, in the operation of particularly spudding in (as open-air rescue of battlefield) in the open air, usually can't not use because of there being available power supply, in addition, what brain section, orthopaedics used respectively is the different bitbraces of two covers, can not be general neatly.

The purpose of this utility model aims to provide a kind of multi-functional automatic stop bitbrace that can conveniently be connected, can finish safety quickly operation with multiple drill bit.

This utility model comprises rocking bar, extension bar, drill bit, the end that one end of extension bar snaps in rocking bar is fastenedly connected, the other end inboard of extension bar has interface holes, interface holes depths inwall is provided with the desk-top projection of half crescent moon, the joint of drill bit can snap in the interface holes, and at the place that matches with the desk-top projection of first quarter moon tooth, first quarter moon dentition formula concave station is also cut a hole in the termination of joint, and with interface holes in also dug a recess on the first quarter moon dentition formula concave station of first quarter moon dentition formula projection touching position, the termination of whole joint becomes 7 fonts.In the joint insertion interface holes of drill bit, after rotating to an angle, the desk-top projection of first quarter moon tooth snaps in the indent of the termination of joint in the interface holes, promptly connects to finish.

Drill bit in this utility model can adopt the automatic stop drill bit of electronic drill for craniotomy in doing operation of opening cranium, but for adapting to the slower characteristics of bitbrace rotating speed, increase by two top ditches at original brill core top, and will bore the core drift angle and be contracted to 120 °, so just increase the sharpness that bores core greatly, reached laborsaving, timesaving effect.

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

Fig. 1 is the structural representation of this utility model one embodiment;

Fig. 2 is the structural representation of extension bar;

Fig. 3 is that the A of Fig. 2 is to view;

Fig. 4 is the structural representation of drill bit;

Fig. 5 is the vertical view of Fig. 4;

Fig. 6 is for boring the vertical view of core;

Fig. 7 is for boring the side view of core;

Fig. 8 is for boring the half sectional view of core;

Fig. 9 is the structural representation of bone surgery drill bit.

Shown in accompanying drawing 1, this utility model comprises pressure handle 1, rocking bar 2, shake cover 3, extension bar 4, drill bit 5, bore core 7, deslagging head 6.Pressure handle 1 is by screw, ball and 2 rotatable connections of rocking bar, and rocking bar 2 shapes are shaped, and shaking cover 3, to be set in the recess of rocking bar 2 also rotatable, grabs to make things convenient for hands, and an end of rocking bar 2 is provided with opening, and an end of extension bar 4 can snap in the opening, clenches by the top to be solidly connected.Shown in accompanying drawing 2,3, have interface holes 8 in the other end of extension bar 4, interface holes 8 depths inwalls are provided with half crescent moon desk-top protruding 9.Shown in accompanying drawing 4,5, the joint 10 of drill bit 5 can insert in the interface holes 8, at the place that matches with first quarter moon tooth desk-top protruding 9, first quarter moon dentition formula concave station 12 is cut a hole in the termination 11 of joint 10, and with interface holes in desk-top protruding 9 joints of first quarter moon tooth, also dug a recess 13 on the first quarter moon dentition formula concave station 12,11 one-tenth 7 fonts in the termination of whole joint.During use, only need the joint 10 of drill bit is inserted in the interface holes 8, behind rotation 45 degree, first quarter moon tooth desk-top protruding 9 just snaps in recess 13 places of the termination of joint in the interface holes, and drill bit 5 just is connected with extension bar 4 and finishes.

This utility model can be under the situation that rocking bar partly remains unchanged, and described drill bit can use multiple drill bit to match with extension bar according to the needs of operation.Can adopt the automatic stop drill bit (referring to accompanying drawing 7) of electronic drill for craniotomy as employed drill bit in doing the operation of brain section, but for adapting to the slower characteristics of bitbrace rotating speed, the top (referring to accompanying drawing 6) that can bore core 7 has two top ditches 14, bores the core apex angle and is contracted to 120 degree (referring to accompanying drawing 8).Shown in accompanying drawing 9, it is consistent with the existing orthopaedics pin bit of connecting rod junction structure that the drill bit in bone surgery removes drill bit.During use, earlier fluted drill core 15 is inserted in the drill bit, the fluted drill core is tightened against in the drill bit, insert drill bit in the extension bar again and clockwise rotation 45 degree, promptly connect and finish with fastening key.

Because special connected mode of the present utility model, thereby can the many usefulness of a brill.The repertoire that can have existing hand drill for craniotomy and orthopaedics bitbrace can replace above-mentioned two effects that are drilled in neurosurgery and orthopaedics fully.Do operation of opening cranium with this utility model, do not need bit change, once-forming, every hole only needs 1-2 minute, so try to gain time precious to one for patient.Employed drill bit was electronic automatic stop drill bit when this utility model was done operation of opening cranium, and had done improvement, made it to be more suitable for the bitbrace characteristics.Compare with electric drill, this brill is simple in structure, and is durable in use, easy to carry, good and cheap and do not need characteristics such as electric power, is that electric drill is incomparable.Especially can't use for some reason under the situation of electric drill in the open-air operation of opening cranium in (as open-air rescue of battlefield) and in the institute, its advantage is more obvious.

Claims (4)

1, multi-functional automatic stop bitbrace, comprise rocking bar (2), extension bar (4), drill bit (5), the end that one end of extension bar (4) snaps in rocking bar (2) is fastenedly connected, it is characterized in that having interface holes (8) in the other end inboard of extension bar (4), interface holes (8) depths inwall is provided with the desk-top projection of half crescent moon (9), the joint (10) of drill bit (5) can snap in the interface holes (8), at the place that matches with the desk-top projection of first quarter moon tooth (9), first quarter moon dentition formula concave station (12) is also cut a hole in the termination of joint (11), and with interface holes (8) in also dug a recess (13) on the first quarter moon dentition formula concave station (12) of first quarter moon dentition formula projection (9) touching position, the termination of whole joint (11) become (7) font.

2, multi-functional automatic stop bitbrace as claimed in claim 1 is characterized in that described drill bit (5) can use multiple drill bit to match with extension bar according to the needs of operation.

3, multi-functional automatic stop bitbrace as claimed in claim 1 is characterized in that drill bit in doing operation of opening cranium (5) can adopt the automatic stop drill bit of electronic drill for craniotomy, and increases by two top ditches (14) at original brill core top.

4, multi-functional automatic stop bitbrace as claimed in claim 3 is characterized in that the brill core apex angle of described drill bit is contracted to 120 °.

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