CN201263715Y

CN201263715Y - Multiple-shaft locking fixator

Info

Publication number: CN201263715Y
Application number: CNU2008201349058U
Authority: CN
Inventors: 刘崇震
Original assignee: YITAI TECHNOLOGY Co Ltd
Current assignee: YITAI TECHNOLOGY Co Ltd
Priority date: 2008-09-05
Filing date: 2008-09-05
Publication date: 2009-07-01
Anticipated expiration: 2018-09-05

Abstract

The utility model relates to a multi-axial locking fixator which mainly comprises a bone plate, a locking ring and a bone nail, wherein the bone plate is provided with a penetration hole; the inner side of the penetration hole is provided with an inner arc wall; the C-shaped locking ring which is provided with a locking hole of an inside thread; the outer side surface of the C-shaped locking ring is provided with an arc-shaped part corresponding to the inner arc wall so that the locking ring can incline and swing in a limited range when arranged in the penetration hole; the bone nail is provided with a head part and a nail body; the outside diameter of the nail body is smaller than the head part ; the head part and the nail body are both provided with threads; the head part can be correspondingly screwed and locked in the locking ring by the threads, can be screwed and locked in the locking ring by using the bone nail and can incline corresponding to the inner arc wall by using the arc-shaped part of the locking ring so that the bone nail and the locking ring are in an inclined swing shape relative to the penetration hole of the bone plate, thereby the fixing angle of the bone nail relatively entering the bone plate is regulated.

Description

Multiaxis is to locking fixer

Technical field

This utility model relates to the utensil that a kind of orthopaedic medical treatment is suitable for, and refers to that especially the fracture of people's bone is in order to engage fixed utensil.

Background technology

Owing to when skeleton the fracture accident takes place as meets fracture, need fix the engagement state of both sides knochenbruch with injured bone fixation device.The functional form of injured bone fixation device differs, there is a kind of form to utilize a hone lamella to link such as the vertebrae injury of the bone of both sides partly, the binding of hone lamella then sees through the hole that hone lamella drills inner bolt hole, nail for an external screw thread shape passes the tissue of squeezing under the injury of the bone, is fixed with the joint shape of determining the both sides knochenbruch.

But nail is subject to nail and is screwed together in the hole inboard through the angle that the hole of hone lamella penetrates, and when needs are dodged organizing of being not suitable for relatively that the nail end enters, can't do interim adjustment in response to the most suitable position that nail enters.

The utility model content

The inventor is in view of aforesaid problem, and then research and development diligently, therefore this utility model main purpose is to provide a kind of multiaxis to locking fixer, its mainly be the nail of injured bone fixation device and place, hone lamella location have can the appropriateness rotation structure, adjust the angle that it enters injury of the bone perienchyma at random in order to nail.

In order to reach aforementioned main purpose, the technological means that this utility model used is to provide a kind of injured bone fixation device, and it comprises:

One hone lamella, it is provided with at least one perforation that is penetration state, the inboard inner arc wall that is concave arc shape of this perforation;

One lock ring, it is C shape ring, and the inboard is the lockhole of female thread, and a side is provided with an opening in response to C shape ring, and lateral surface is a curved portions to radian that should the inner arc wall, the interior appropriateness of this perforation of inserting this hone lamella in order to this lock ring pendulum that inclines;

One nail, it has one for the head of instrumentation, the external diameter nail body less than head, this head is to should lockhole and be provided with screw thread in the outside, and nail forms screw-like in the outside, adjusts angle position with respect to this hone lamella in order to this nail with the pendulum that inclines of this lock ring.

Therefore according to technological means of the present utility model, the effect brief description that this utility model can obtain is following listed:

This utility model mainly is to utilize lock ring between two parties between hone lamella and nail,, tool curved portions design c-shaped through lock ring, and the perforation of hone lamella also correspondence be provided with the inner arc wall, therefore lock ring places when boring a hole in the hone lamella, just can make curved portions in the arc cooperation scope of inner arc wall, make the angle adjustment that an appropriateness can be inclined and be put.Thus, screw lock is in the nail of lock ring, also in company with the lock ring pendulum that inclines in the lump, adjusted nail naturally in order to the fixing angle position of hone lamella, is to fix the injury of the bone in the most suitable position to guarantee nail, dark tool practicality, and structure simplify, easy to operate.

Description of drawings

Fig. 1 is the assembly decomposition view of this utility model preferred embodiment.

Fig. 2 is the hone lamella upper viewing view of this utility model preferred embodiment.

Fig. 3 is the hone lamella of this utility model preferred embodiment and the combination section of lock ring (i.e. tangent plane shown in dotted line among Fig. 23 to 3).

Fig. 4 is the combination section of the joint injury of the bone of this utility model preferred embodiment.

Fig. 5 is the combination section that the lock ring of this utility model preferred embodiment inclines and puts with respect to hone lamella.

Fig. 6 is the combination section that the lock ring of this utility model preferred embodiment inclines and puts in another angle with respect to hone lamella.

Fig. 7 is the hone lamella upper viewing view of another preferred embodiment of this utility model.

The primary clustering symbol description

10 hone lamellas

11 perforation

12 inner arc walls

20 lock rings

21 lockholes

211 first stomidiums

212 second stomidiums

22 openings

23 curved portions

30 nails

31 heads

32 screw threads

33 nail bodies

40 injury of the bones

The specific embodiment

This utility model be a kind of multiaxis to locking fixer, as shown in Figure 1, it is to comprise a hone lamella 10, a lock ring 20, a nail 30, by lock ring 20 between two parties between nail 30 and hone lamella 10, as the intermediate module of nail 30 adjustable angles.

Please referring again to shown in Fig. 1,2,3, hone lamella 10 can be a lengthy motion picture shape plate body, penetratingly be provided with several perforation 11, especially the inner arc wall 12 that refers to perforation 11 medial wall cancave cambered surfaces, therefore bore a hole 11 at axial angle, inner arc wall 12 internal diameter maximums are to be positioned at nearly zone line, in addition, also can be as shown in Figure 7, hone lamella 101 presents the form of single perforation 11.

This lock ring 20 is C shape ring, the inboard lockhole 21 that forms a female thread, one side offers opening 22 one according to C shape, lateral surface is the curved portions 23 that forms the radian of corresponding inner arc wall 12, have and to expand out owing to lock ring 20 is c-shaped, the elasticity adjusting range that contracts near, be with when not being expanded support, the external diameter of lock ring 20 is slightly smaller than inner arc wall 12, and as shown in Figure 3, lockhole 21 is slightly smaller than the other end towards the internal diameter of hone lamella 10 1 ends, therefore makes lockhole 21 be formed with tapering, as shown in Figure 3, first stomidium 211 indicates the internal diameter of D1, and the internal diameter that indicates D2 towards second stomidium 212 is gradually big, that is to say that lockhole 21 is gradually little towards the internal diameter of hone lamella 10.

This nail 30 has a head 31, the external diameter nail body 33 less than head 31, wherein head 31 corresponding lockholes 21 are provided with screw thread 32 in the outside, hex slot was to form pod in head 31 end faces were provided with, and the tapering that head 31 forms vertically, also be corresponding lockhole 21, and nail body 33 also form screw-like in order to fixing in the outside.

Shown in Fig. 4,5,6, before this utility model utilizes hone lamella 10 to engage the injury of the bone, see through the C annular attitude of lock ring 20 tool openings 22, be able to the application of force and contract and compel lock ring 20 external diameters, the space of compression opening 22 is forced lock ring 20 to fill in perforation 11, allow curved portions 23 place in inner arc wall 12 scopes, because losing contracts compels the application of force and is elasticity and expands and open, lock ring 20 is subject in the perforation 11, can not come off easily in outside.

Secondly, nail 30 reclined place the injury of the bone 40 lateral surface, and lock ring 20 utilizes the radian of its curved portions 23 with inner arc wall 12 inboards, and the little difference gap distance of lock ring 20 external diameters and perforation 11 internal diameters, have living space and made appropriate left and right sides inclination pendulum, but because of the arc restriction nail 30 of inner arc wall 12 with curved portions 23 can not break away from outside the perforation 11 with lock ring 20, central axis with smooth adjustment lock ring 20, hone lamella 10 perforation 11 central axis present beat relatively, and this has promptly adjusted the angle that future, nail 30 will enter.

Therefore utilize 31 rotations of hand-held tool control nail 30 heads, the screw thread 32 of head 31 is entered in the lockhole 21 of lock ring 20, because lockhole 21 and head 31 little taper fit, therefore nail 30 is locked lock ring 20 states and can more be locked tighter, cooperate opening 22 to give elasticity and change the space, to guarantee that nail 30 locks lock ring 20 states and have and be fit to fixedly tightness, nail 30 enters through lock ring 20, by nail body 33 ends pierce in the injury of the bone organizing promptly announcement fixedly hone lamella 10 finish.

Thus, the lock ring 20 that sees through of the present utility model provides and adjusts the angle that nail 30 enters, be able to saferly engage the injury of the bone relievedly, and guarantee nail 30 places of entering be preferable, than safe condition, and can not injure perienchyma.

The foregoing description only is illustrative technology of the present utility model and effect thereof, but not is used to limit this utility model.Any ripe all can be in this technology personage under the situation of this utility model know-why and spirit, the foregoing description is made amendment and is changed, therefore the claim that rights protection scope of the present utility model should be as described later is listed.

Claims

1. a multiaxis is characterized in that to locking fixer, comprises:

2. multiaxis as claimed in claim 1 is to locking fixer, it is characterized in that the lockhole of described lock ring is first stomidium towards the internal diameter of hone lamella one end, the other end is second stomidium, the second stomidium internal diameter is gradually little towards first stomidium, and the corresponding lockhole of bone screw head also has corresponding tapering.