CN201295262Y

CN201295262Y - Security protection grooved bit for skull mending operation

Info

Publication number: CN201295262Y
Application number: CNU2008202260465U
Authority: CN
Inventors: 由俊宇; 曾宪英; 张翼
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-17
Filing date: 2008-11-17
Publication date: 2009-08-26
Anticipated expiration: 2018-11-17

Abstract

The utility model discloses a security protection grooved bit for skull mending operation composed of a drill (1), a tubular handle (2) and a micromachine (3). The micromachine (2) is secured in the tubular handle (2). The drill (1) is arranged at a lower end of a shaft of the micromachine (3). The tubular handle (2) is provided with a sleeve (4), on which a support rod (5) is secured by parallel welding with the shaft of the micromachine (3). A rotating protection plate (6) is arranged at lower end of the support rod (5). A support fix frame (7) is arranged at upper end of the support rod (5). A fix clamp (8) is arranged at lower end of the support fix frame (7). The security protection grooved bit for skull mending operation has safer and more convenient drill due to the rotating protection plate supported by the external support device and a device using inertial force automatically to cut off the power supply after drill to stop the micromachine, which effectively avoids damage to duramater.

Description

Cranioplasty surgery safeguard protection perforating bur

Technical field

This utility model relates to a kind of improvement of perforating bur in neurosurgery, specifically a kind of cranioplasty surgery safeguard protection perforating bur.

Background technology

At present, in hospital's neurosurgery skull repairing clinical operation, after isolating the bone edge, need around bone is damaged, beat 4-5 bone hole with the Ke Shi brill from bone edge 0.5cm place, in order to fixing artificial skull, the assorted brill of this gram comprises drill bit, pipe handle and micromachine constitute, micromachine is fixed in the pipe handle, drill bit is connected with the driving shaft of micromachine, the assorted deficiency that exists in the application that is drilled in of this gram is: in skull drilled moment of beating, drill bit has downward inertial impact force, make drill bit after beating skull still to next segment distance, can stab the cerebral dura mater tissue.Present solution is to adopt the external brain spatula that it is extend between skull inboard and the cerebral dura mater, when boring saturating skull, the inertial impact force of drill bit can be drilled on the external brain spatula, with the protection cerebral tissue, but the external brain spatula will adopt hand-held by another operation technique person, can not fix, even if the impulsive force of drill bit is drilled on the external brain spatula, can't avoid equally peeling off and the damage of cerebral tissue pressurized, even form epidural hematoma and brain injury because of large tracts of land between the cerebral dura mater that inertial impact force caused of drill bit and the inner table of skull; What also have is fixed on the external brain spatula on the bone edge, after boring thoroughly, inertial impact force acts on the external brain spatula, the stressed bone edge of passing to of external brain spatula, though inertial impact force is stoped, can not overcome this inertial impact force fully to brain tissue injury.

Summary of the invention

It is a kind of when the cranial drill open-work that the purpose of this utility model is to provide; although inertial impact force impinges upon on the brain spatula; but brain spatula can not press down; and drill bit can stop operating rapidly under the situation of decompression, thereby prevents to cause the cranioplasty surgery safeguard protection perforating bur that the cerebral dura mater large tracts of land is peeled off and the cerebral tissue pressurized damages effectively.

For reaching above purpose; the technical scheme that this utility model adopted is: this cranioplasty surgery safeguard protection perforating bur; by drill bit; pipe handle; micromachine constitutes; micromachine is fixed in the pipe handle; drill bit is located at the axle lower end of micromachine; it is characterized in that on pipe handle, being provided with sleeve; on sleeve with the fixing upper support bar of the parallel welding of axle of micromachine; establish the rotation baffle in the lower end of support bar; on the support bar by sleeve fixing on the transversal stretching handle; the transversal stretching handle inserts in the guide pipe; and fix with dog screw; extension elongation by the transversal stretching handle; adjusting is from the distance of bone edge punching; supporting and mounting bracket is established in bottom at guide pipe; fixation clamp is established in the lower end of supporting and mounting bracket; when using this utility model; at first the fixation clamp with supporting and mounting bracket is clamped on the corrective surgery headstock; or be clamped in not with fixed object that head contacts on; the weight of whole device is not born at patient's head operative site; rotate the height of baffle by the hold-down screw adjustment; and the steering angle of support bar; make it aim at the position in the bone hole of beating; turn the rotation baffle then; the rotation baffle is extend between skull and the cerebral dura mater; and fix with corresponding screw; then; can spud in; when beating skull, the tip of drill bit is under the effect of inertial impact force, and bump rotates baffle; and the bearing capacity of rotation baffle of this moment reaches on the corrective surgery headstock or on the fixed object; can not act on the cerebral dura mater, so inertial impact force is peeled off with respect to inner table of skull is large-area the pressurized damage and the cerebral dura mater of cerebral tissue in the time of can effectively having avoided boring.This utility model is also implemented by following measure: described rotation baffle; constitute by base plate and elastic plate; make of plastic plate; on base plate, be provided with depression; in depression, be provided with spring; elastic plate place spring above; interior button with depression on the edge of elastic plate is provided with power supply normal open contact along the inboard; power supply normal open contact is connected with the micromachine power control circuit by lead; during on and off switch on pressing micromachine; micromachine work, after brill was deep, inertial impact force pressed down the elastic plate that rotates baffle; the power supply normal open contact of elastic plate disconnects; cut off the power supply of micromachine, micromachine is stopped operating automatically, further protected cerebral dura mater injury-free.

The beneficial effects of the utility model are: compare with present drill for craniotomy; owing to added rotation baffle by the external means of support pressure-bearing; and added saturating back the cutting off the electricity supply automatically of brill and made the device of micromachine stall by inertial impact force; so; make drill bit safer, convenient, can effectively avoid dural damage.

Description of drawings

Fig. 1 cuts open sketch map for this utility model structure forward sight office.

Fig. 2 is that this utility model is along rotating the baffle schematic top plan view.

Fig. 3 analyses and observe enlarged diagram for this utility model along Fig. 2 A-A.

The specific embodiment

Make this utility model with reference to accompanying drawing 1,2,3.This cranioplasty surgery safeguard protection perforating bur; by drill bit 1; pipe handle 2; micromachine 3 constitutes; micromachine 3 is fixed in the pipe handle 2; drill bit 1 is located at the axle lower end of micromachine 3; it is characterized in that on pipe handle 2, being provided with sleeve 4; on sleeve 4 with the fixing upper support bar 5 of the parallel welding of axle of micromachine 3; establish rotation baffle 6 in the lower end of support bar 5; transversal stretching handle 10 on support bar 5 is fixing by sleeve; transversal stretching handle 10 inserts in the guide pipe 11; and it is fixing with dog screw 12; establish supporting and mounting bracket 7 in the bottom of guide pipe 11; fixation clamp 8 is established in the lower end of supporting and mounting bracket 7, adjusts the height of rotation baffle 6 and the steering angle of support bar 5 by hold-down screw 9.Described rotation baffle 6; constitute by base plate 6a and elastic plate 6b; make of plastic plate; on base plate 6a, be provided with depression; in depression, be provided with spring 6c; elastic plate 6b place spring 6c above, on the edge of elastic plate 6b and the interior button of depression be provided with power supply normal open contact 6d along the inboard, power supply normal open contact 6d is connected with micromachine 3 power control circuits by lead.

Claims

1; a kind of cranioplasty surgery safeguard protection perforating bur; by drill bit (1); pipe handle (2); micromachine (3) constitutes; micromachine (3) is fixed in the pipe handle (2); drill bit (1) is located at the axle lower end of micromachine (3); it is characterized in that on pipe handle (2), being provided with sleeve (4); go up and the fixing upper support bar (5) of a parallel welding of micromachine (3) at sleeve (4); establish rotation baffle (6) in the lower end of support bar (5); go up by the fixing transversal stretching handle (10) of going up of sleeve at support bar (5); transversal stretching handle (10) inserts in the guide pipe (11); and it is fixing with dog screw (12); establish supporting and mounting bracket (7) in the bottom of guide pipe (11), fixation clamp (8) is established in the lower end of supporting and mounting bracket (7).

2, cranioplasty surgery safeguard protection perforating bur according to claim 1; it is characterized in that described rotation baffle (6); constitute by base plate (6a) and elastic plate (6b); on base plate (6a), be provided with depression; in depression, be provided with spring (6c); elastic plate (6b) place spring (6c) above; interior button with depression on the edge of elastic plate (6b) is provided with power supply normal open contact (6d) along the inboard, power supply normal open contact (6d) is connected with micromachine (3) power control circuit by lead.