CN2627991Y

CN2627991Y - Bone drill

Info

Publication number: CN2627991Y
Application number: CN 03224041
Authority: CN
Inventors: 徐谦
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-10
Filing date: 2003-03-10
Publication date: 2004-07-28
Anticipated expiration: 2013-03-10

Abstract

The utility model discloses a bone drill, which comprises a drill bit and a drill bit control mechanism. The drill bit is equipped with a through hole along the axle direction. The drill bit control mechanism consists of a probe and a control lever of probe. The probe is fixed on the control lever along the axle direction. The through hole of drill and the probe have clearance fit. Compared with the prior art, the utility model has self-stop function, which can avoid trauma to vital soft tissue. The bone drill can connect to any common clinical electrical drill. Separate power supply is not necessary, thus the degree of operation safety is improved. The bone drill is easy to be operated and has no particular environmental requirements.

Description

A kind of bone drill

Technical field

This utility model relates to a kind of bone drill of clinical orthopaedics operation usefulness.

Background technology

The bone drill that clinical orthopaedics operation is commonly used is to be operated by hand by the people, can not automatic stop, break through the offside cortical bone after, sharp drill bit continues rotation, very easily vital tissues such as near the blood vessel the damage, nerve.

The utility model content

The purpose of this utility model is to provide a kind of bone drill safe in utilization.

For achieving the above object, solution of the present utility model is: a kind of bone drill, include drill bit and drill bit controlling organization, its drill bit axially have a through hole, the drill bit controlling organization includes the control stick of a probe and probe, probe is axially fixed on the control stick, and drill bit through hole and probe are made matched in clearance.

Described drill bit controlling organization includes connector, control stick, a nut and a spring of probe, the spindle nose of probe connector and control stick is releasable connection, spring is placed in the linkage section of connector and spindle nose, its front end peaks at the shaft shoulder of connector, the other end peaks on the telescopic dividing plate, and control stick is provided with positive tooth; Described nut is spun on the external screw thread between tail end and the positive tooth.

Described a kind of bone drill, the junction of the spindle nose of its connector and control stick is fixed by screw.

Described a kind of bone drill, its connector is connected in telescopic mode with control stick.

Described a kind of bone drill, its connector is connected in the mode that the end cooperates with the spindle nose of control stick.

Described a kind of bone drill, it also comprises bone drill folder, and these bone drill anchor clamps have chuck and sleeve, telescopicly is axially arranged with and can presss from both sides the isolating folder lid of body with bone drill, the front end of folder lid by screw hole with screw, press from both sides body with bone drill and fix, the rear end is connected with sleeve by screw.

Described a kind of bone drill is provided with the cloudy tooth that matches with positive tooth in its sleeve, be provided with a hole that supplies drill bit to move in the chuck.

After adopting said structure, during use, the tail end of control stick and the chuck of conventional electric drill are joined, when nut to the sleeve turn, cloudy tooth and positive tooth interlock, the rotating band moving sleeve of control stick, drive drill jig and drill bit again, drill bit does not stop after breaking through sclerotin, is convenient to continue in the pulp cavity to shoot; Nut is transferred near tail end, and the negative and positive tooth is because the effect of spring force is separated, and control stick can not drive sleeve, and drill bit stops boring; After drill bit propped up the offside cortical bone, probe moved after driving control stick, and the negative and positive tooth interlocks, and drill bit rotates; After drill bit was broken through the offside cortical bone, the resistance of probe significantly reduced, and spring makes the control stick reach, and the negative and positive tooth separates, and drill bit stops boring.The automatic stop function of drill bit can be avoided the damage to important soft tissue.This bone drill can be taken over what routine clinical electric drill, energy resource system that need not be independent; This utility model than conventional art has relatively effectively improved the degree of safety of operation, and is simple to operate, do not have special environmental requirement.

Description of drawings

Fig. 1 is a part explosive view of the present utility model;

Fig. 2 is a section of structure of the present utility model;

Fig. 3 is the cut-away view of folder lid.

The specific embodiment

As shown in Figure 1, this bone drill includes drill bit 1 and drill bit controlling organization, drill bit 1 axially have a through hole 11, the drill bit controlling organization includes the control stick 4 of a probe 3 and probe 3, probe 3 is axially fixed on the control stick 4, through hole 11 is made matched in clearance with probe 3.

During use, the tail end 42 of control stick 4 and the chuck of conventional electric drill are joined, when nut 41 to sleeve 5 turns, cloudy tooth 51 is interlocked with positive tooth 44, the rotating band moving sleeve 5 of control stick 4 drives drill jig 2 and drill bit 1 again, and is identical with conventional bone drill, drill bit does not stop after breaking through sclerotin, is convenient to continue in the pulp cavity to shoot; Nut is transferred near tail end 42, and the negative and positive tooth is because the effect of spring force is separated, and control stick 4 can not drive sleeve 5, and drill bit stops boring; After drill bit props up the offside cortical bone, after driving control stick 4, moves by probe 3, and the negative and positive tooth interlocks, and drill bit rotates; After drill bit was broken through the offside cortical bone, the resistance of probe 3 significantly reduced, and spring 47 makes control stick 4 reaches, and the negative and positive tooth separates, and drill bit stops boring.The automatic stop function of drill bit can be avoided the damage to important soft tissue.This bone drill can be taken over what routine clinical electric drill, energy resource system that need not be independent.This utility model than conventional art has relatively effectively improved the degree of safety of operation, and is simple to operate, do not have special environmental requirement.

In when assembling, the tip side of connector 48 and control stick 4 is fitted inside from two ports of spring 47 respectively, with the alignment of two sides two head ends, tighten then with screw 46.Control stick 4 is put into sleeve 5, make probe 3 pass the

mesopore

22,21 of chuck 2 and stretch out in outside the chuck 2.The front end of spring 47 is withstood connector 48 shaft shoulders 481, and the dividing plate 52 of sleeve 5 is withstood in the rear end.It is enough that the length of spring is wanted, and control stick is pushed away forward.Its elastic force is greater than the resistance of the soft tissue that may touch, guaranteeing that under the situation that is adjusted to the drill bit automatic stop spring has enough big thrust to remove to overcome the resistance of soft tissue, with the positive tooth on the control stick from the engagement of cloudy tooth throw off.Thereby rotating torque is not uploaded on sleeve 5 and the drill bit 1 from control stick 4.Folder covers profile, the internal structure and sleeve 5 identical (as Fig. 2) of 6 tube portion, but is provided with ear edge 68 in the end that is connected with drill point, and

screw

63,64 passes

hole

61,62 on the ear edge 68 respectively and will press from both sides and cover 6 and be fixed on the drill point 2.Screw 65,66,67,68 will press from both sides and cover 6 and link together with sleeve 5.

Semicircle hole slot 83 on the dividing plate of sleeve 5 is a matched in clearance with the spindle nose 45 of control stick 4, and its gap will guarantee that 83 of spindle nose 45 and hole slots can have good relative slip, guarantees that spring 47 can not embed in the gap.With sleeve 5 same internal structure (as Fig. 3) is arranged because folder cover 6, it also will have good cooperating with control stick, guarantees that control stick 4 covers 6 inside good relative slip can be arranged with pressing from both sides at sleeve 5.

The distributing position (as Fig. 2) of the screw thread 43 on the control stick 4 will guarantee nut 41 when the direction turn of sleeve 5, can make cloudy tooth 51 interlocks on positive tooth 44 and the sleeve on the control stick.Folder covers 6 matching requirements that will satisfy equally with positive tooth 44.

Adjust nut 41 and can adjust the length that probe 3 exposes drill bit 1, in being provided with of automatic stop, its exposed length will guarantee that under the elastic force effect of spring 47 positive tooth 44 can break away from fully with cloudy tooth 51, makes control stick 4 can not drive sleeve 5 and drill point rotates.

Drill bit 1 is a hollow boring bit, and it can have various models, the thickness difference, but the central through hole of same internal diameter is arranged; Drill point 2 main bodys are conventional drill point, and just more conventional drill point is provided with sleeve 5 more, and drill bit 1 is packed in the hole 21 of drill point 2, and adjustment can clamp; Change and drill bit is installed and is used conventional drill point the same.

After the each several part of safety bone drill assembled,, can come into operation as long as the tail end 42 of control stick 4 chuck with conventional electric drill is joined.

Claims

1, a kind of bone drill includes drill bit and drill bit controlling organization, it is characterized in that: drill bit axially have a through hole, the drill bit controlling organization includes the control stick of a probe and probe, probe is axially fixed on the control stick, drill bit through hole and probe are made matched in clearance.

2, a kind of bone drill as claimed in claim 1, it is characterized in that: the drill bit controlling organization includes connector, control stick, a nut and a spring of probe, the spindle nose of probe connector and control stick is releasable connection, spring is placed in the linkage section of connector and spindle nose, its front end peaks at the shaft shoulder of connector, the other end peaks on the telescopic dividing plate, and control stick is provided with positive tooth; Described nut is spun on the external screw thread between tail end and the positive tooth.

3, a kind of bone drill as claimed in claim 2, it is characterized in that: the junction of the spindle nose of connector and control stick is fixed by screw.

4, as claim 2 or 3 described a kind of bone drills, it is characterized in that: connector is connected in telescopic mode with control stick.

5, as claim 2 or 3 described a kind of bone drills, it is characterized in that: connector is connected in the mode that the end cooperates with the spindle nose of control stick.

6, a kind of bone drill as claimed in claim 1, it is characterized in that: it also comprises bone drill folder, these bone drill anchor clamps have chuck and sleeve, telescopicly be axially arranged with and press from both sides the isolating folder of body lid with bone drill, the front end of folder lid by screw hole with screw, press from both sides body with bone drill and fix, the rear end is connected with sleeve by screw.

7, a kind of bone drill as claimed in claim 6 is characterized in that: be provided with the cloudy tooth that matches with positive tooth in the sleeve, be provided with a hole that supplies drill bit to move in the chuck.