CN2223078Y

CN2223078Y - Hollow water filling series low-speed hand bone drill bit

Info

Publication number: CN2223078Y
Application number: CN 95241700
Authority: CN
Inventors: 吴大怡
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-07
Filing date: 1995-06-07
Publication date: 1996-03-27
Anticipated expiration: 2005-06-07

Abstract

The utility model provides a series low-speed handset bone drill bit used for surgical operations of cranio-maxillofacial bones, which comprises a series twist drill, a forming drill, a countersink drill, a pioneer drill, a ball drill, etc. The utility model is characterized in that a water filling pipe is arranged in the drill bit, the upper end of the drill bit is provided with a water inlet, a blade part or the tip end of the blade part is provided with a water outlet, the number of the water outlet is determined according to the shape of the blade part, and the water outlet can be in a symmetrical two-hole type or a three-hole type. The drill bit of the design solves the shortcomings that an additional cooling water feeding position is difficult to master, and the cooling efficiency is low. The cooling water is directly injected in the surfaces of drilled bones, the cooling effect is sufficient and good, and tissues are easy to heal after an operation.

Description

Hollow water filling series low speed mobile phone bone drill head

This utility model belongs to the medical equipment class, is a kind of cranio-maxillofacial surgical operation with serial low speed mobile phone bone drill head.

Cranio-maxillofacial surgical operation serial low speed mobile phone bone drill head commonly used such as serial fluted drill, the brill that is shaped, an awl day brill, pioneer's brill, round bur etc.The mobile phone rotating speed changes-30000 commentaries on classics/per minutes 2000 usually in operation, destroy osteocyte for avoid under the high speed operation situation, producing high temperature as far as possible, usually employing adds cooling water and makes boring local cooling, but adding cooling water has the position of injection to be difficult to grasp, the not high shortcoming of cooling effectiveness influences surgical effect and organization healing.

The purpose of this utility model is a kind of hollow water filling series of design low speed mobile phone bone drill head.

The design's technology contents is: the cranio-maxillofacial surgical operation comprises drill bits such as serial fluted drill, shaping brill, countersink, pioneer's brill, round bur with serial low speed mobile phone bone drill head, this bit contour is identical with common outer water filling drill bit, there is a filling pipe (4) at axle center at drill bit, sees Fig. 1.There is water inlet (1) the drill bit upper end, there is outlet (6) lower end, water inlet is opened on the termination of interface (2), and outlet (6) is opened on drill bit blade (5) or blade tip, and the number of the outlet of blade adopts symmetric diplopore or trifora according to the profile of drill lip.The diameter of the filling pipe (4) at the axle center of drill bit is not more than 0.15 millimeter.Water flooding regime can be used for the low speed mobile phone bone drill head of various profiles in this.

The major advantage of present technique is: solved and add cooling water and inject the position and be difficult to grasp, the shortcoming that cooling effectiveness is not high, the central filling pipe of this drill bit is positioned at the central authorities of drilling rod and adopts minor diameter, does not influence the mechanical strength of drilling rod, and the water inlet of upper end can hold common water source and inject pin, do not influence the mobile phone rotation, outlet adopts symmetric diplopore or trifora according to the profile of drill lip, makes cooling water directly inject the brill surface of bone, cool off fully, effective, operation back tissue is healing easily.

Accompanying drawing and drawing explanation:

Fig. 1. the fluted drill cutaway view.

Fig. 2. be shaped and bore cutaway view.

Sequence number explanation among the figure: (1) water inlet, (2) interface, (3) bar portion, (4) filling pipe, (5) blade, (6) outlet.

Embodiment:

Example one. fluted drill is seen Fig. 1, interface (2) directly and the mobile phone standard interface join bar minister 15mm, the diameter 2.3nm of bar portion, the long 26mm of blade, blade diameter 2.8mm, length overall 41mm.The filling pipe diameter 0.08mm of central authorities.

Example two. be shaped to bore and to see Fig. 2, interface (2) directly and the mobile phone standard interface join bar minister 17mm, the diameter 2.5mm of bar portion, the long 24mm of blade, blade diameter 2.8mm, length overall 41mm.The filling pipe diameter 0.1mm of central authorities.

Claims

1. a cranio-maxillofacial surgical operation is with serial low speed mobile phone bone drill head, comprise that serial fluted drill, shaping brill, countersink, pioneer bore, round bur, it is characterized in that there is a filling pipe (4) at the drill bit shaft center, there is water inlet (1) the drill bit upper end, and there is outlet (6) lower end.

2. by the said bone drill head of claim 1, it is characterized in that the water inlet (1) of the filling pipe at drill bit shaft center is opened on the termination of interface (2), outlet (6) is opened on drill bit blade (5) or blade tip, the number of the outlet of blade (6) adopts symmetric diplopore or trifora according to the profile of drill lip.

3. by claim 1,2 said bone drill heads, it is characterized in that the diameter of the filling pipe (4) at drill bit shaft center is not more than 0.15 millimeter.