CN207445022U - A kind of On Fluctuations Novel bone screw combination with handoff functionality - Google Patents

Abstract

The utility model is related to a kind of On Fluctuations Novel bone screw combinations with handoff functionality, it is improved in traditional bone nail combination, between bone nail and bone plate i.e. in bone nail combination, in addition the washer of a changeable function, make by bone nail fixed bone to be plugged into, can be rigidly fixed compared with bone plate, or On Fluctuations are fixed, and can switch in two stationary states, it plugs into so as to fulfill " On Fluctuations ", is conducive to the healing again of impaired knochenbruch.

Description

A kind of On Fluctuations Novel bone screw combination with handoff functionality

Technical field

A kind of bone fixation equipment in the utility model category bone surgery field, and in particular to nail.

Background technology

Traditional bone surgery such as when handling limb fracture, can generally use bone nail, through bone plate, then It is implanted into bone to be plugged into so that then the wound face docking of limb fracture to be plugged into forms and rigidly fixes, treats adjacent wound Hinder face normal healing.But it is proved according to clinical test, adjacent wound face, if after appropriate fix, can still keep phase slightly To activity, then the quickening of wound face can be stimulated to heal；And its healing rate and effect, it is brighter than complete mandatory fixed effect It is aobvious.People also try in the clinical target for how reaching " after suitably fixing, can still keep activity relatively slightly " Figure carries out each getting trial, such as open (bulletin) number：CN202515765U, the patent of invention of entitled " power lock screw ", though It so can also realize clinical function, but because its making is complicated, and when being implanted into bone, torque is easy to cause to return pine, so, face Bed Effect value obtains business and consults；

The content of the invention

The utility model, for how realizing that bone nail combination when plugging into knochenbruch, realized " after appropriate fixed, still Can keep slightly relatively movable " technology requirement, provide a kind of simple in structure, be easy to make, operate convenient technical side Case, and can the switching between achievable " rigidly fixing " and " slightly relatively movable " be added by shirtsleeve operation, from And the problems such as simplifying logistics stock.

Technical solution is used by the utility model：Traditional bone nail is combined, i.e. bone nail and bone plate, carried out Transformation, and between the two, add a mediator, i.e. a washer being used cooperatively with bone nail and bone plate.

Further, this improved bone nail, upper end are in cylinder, are placed in the internal cavity of washer, and in gap Cooperation, the top of the cylinder is equipped with the slot for driver, and the bottom surface of the cylinder then has the half of one group of protrusion Columned screens, the lower end of bone nail set threaded afterbody, be pierced by from the hole below washer.

Further, this washer, top are also equipped with the slot for driver, and in the inner bottom surface of hollow cavity, then it sets There are the matched semi-cylindrical recesses of screens of one group of semi-cylindrical protruded above with the bottom surface of the cylinder of bone nail upper end, but This groove and the slot for driver at top spatially intersect, and into 90 degree.

Further, the correspondingly concave perforation of bone plate, the outer surface being in the form of a column with washer is in clearance fit, bone nail Lower end, be just pierced by from the perforation of bone plate, to be implanted into the bone for treating docking.

Further, the correspondingly concave perforation of bone plate, and being engaged in hemispherical outer surface for washer, so that connecing Nail adds the possibility of relative swing.

Further, the external cylindrical surface of the inner cavity of this washer and bone nail upper end is in thread fitting；Utilize screw thread pair Relative movement up and down, realizes the switching of the two states of the screens of bone nail and the groove of washer.

The utility model is described further below in conjunction with the drawings and specific embodiments.

Description of the drawings：

Fig. 1 is the two-dimensional structure figure of the embodiment one of the utility model, and center line both sides show two kinds of switching states respectively；

Fig. 2 is the effect diagram of each part of the embodiment one of the utility model；

Fig. 3 is the assembling effect diagram of the embodiment one of the utility model；

Fig. 4 be the embodiment one of the utility model in " fine motion modal constraint " state when effect diagram；

Fig. 5 be the embodiment one of the utility model in " rigidly fixing " state when effect diagram；

Wherein：1st, bone nail；11st, the slot of the top surface of the cylinder of the upper end of bone nail；12, the outer circle at the top of bone nail Cylinder；13, the screens of the semi-cylindrical of the protrusion on the bottom surface of the cylinder of the upper end of bone nail；14, the cylinder of bone nail Bottom surface；15, the top surface of the cylinder of bone nail；

2, washer；21, the slot of bead top；22, the external cylindrical surface of washer；23, the semi-cylindrical of the bottom surface of washer inner cavity Groove；24, the inner bottom surface of washer inner cavity；25, the top surface of washer；26, the outer bottom of washer；27, the cylinder of the inner cavity of washer Face；

3, bone plate；31, the joint face of bone plate；32, the inner cylinder face of bone plate；

4, bone to be plugged into；41, fine motion end；42, fixing end；43, the face to be plugged into of bone；

Specific embodiment

The structure of the part of the embodiment one of the utility model, as shown in Figure 1 to Figure 3.Wherein, the circle of the upper end of bone nail The top surface 15 of cylinder, the slot 11 being provided at the top of the bone nail for driver；On the bottom surface 14 of the cylinder of the upper end of bone nail, if There is the screens 13 of the protrusion of one group of semi-cylindrical；The external cylindrical surface 12 of the cylinder of the upper end of bone nail, is placed in the interior of washer 2 Chamber；The top surface 25 of washer 2 is also provided with the slot 21 of a bead top；The inner bottom surface 24 of washer inner cavity is equipped with the groove of semi-cylindrical 23, and the groove 23 of this group of inner chamber bottom surface is not parallel with the slot 21 of bead top, but spatially intersect, and in 90 degree；In detail See the 3-D effect schematic diagram of Fig. 2.

Clinically, it is waiting by two sections with bone plate 3 first by after the wound face for the limb fracture plugged into is cleaned Connection is combined in the fine motion end 41 for the bone 4 refuted with fixing end 42 with bone nail disclosed in the utility model, at this point, two sections of bones are treated It plugs between face 43, necessarily remains with the gap of pettiness；Due to the slot 11 and washer on the top of the cylinder of 1 upper end of bone nail Slot 21 on 2 tops exists together in a communicating position, the semi-cylindrical on the bottom surface of the cylinder of 1 upper end of bone nail under this state Screens 13, the inner bottom surface 24 of the inner cavity of washer 2 is born against, as long as being blocked with a wider driver (being commonly called as straight screwdriver) It lives in two slots stated, screws simultaneously, then bone nail 1 will rotate simultaneously with washer 2, when being at the end until screwing, bone nail 1 The screens 13 of semi-cylindrical on the bottom surface of the cylinder of upper end, can bear against the inner bottom surface 24 of washer 2 always, and washer 2 Outer bottom 26 can also bear against the joint face 31 in the connecting hole of bone plate 3 naturally, then, entire component, i.e. bone nail 1, pad Circle 2, bone plate 3 together with bones of extremities 4, i.e., after bone nail 1 is implanted into bones of extremities 4, rotate the coupling mechanism force generated when being at the end, even Into a rigid body；As shown in Figure 5；Under this state, entire component rigidly fixes connection in " urgent to compress ".

When clinically, it is desirable that some such bone nail combination, when switching to " fine motion modal constraint ", it is only necessary to rigidly solid On the basis of fixed connection, with a dedicated driver, the slot 11 at the top of the cylinder of 1 upper end of bone nail is avoided, only blocks pad The slot 21 of bead top on circle 2, is further continued for being rotated by 90 °, at this point, the semicolumn on the bottom surface of the cylinder of 1 upper end of bone nail The screens 13 of shape, in the groove 23 for the semi-cylindrical for dropping into the inner chamber bottom surface on washer 2, screens 13 is no longer tight against pressure pad circle The inner bottom surface 24 of 2 inner cavity, so that the joint face 31 of the outer bottom 26 of washer 2 and the bone plate on bone plate 3, generates Gap, then, bone nail 1, together with bones of extremities fine motion end 41, you can compared with being fastened on bone plate 3 and fixing end simultaneously 42, make micro movable, " the fine motion modal constraint " that this has just reached clinically required is fixed, as shown in Fig. 4；

From this as it can be seen that the screens of the semi-cylindrical on the bottom surface of the cylinder of this 1 upper end of bone nail, and on washer 2 The groove 23 of inner chamber bottom surface, just into the key of such switching；I.e.：Whether the two can then make this practicality new in coincidence status On Fluctuations Novel bone screw combination disclosed in type in surgical procedure, can be selected " rigidly fixing " by doctor according to clinical Still " fine motion modal constraint " is fixed, and carries out the switching at any time of reversible；And such switching, it is only necessary to by the slot of bead top 21, compared with the slot 11 of the top surface of the cylinder of bone nail upper end, it is rotated by 90 ° with driver, you can.Reaching clinical upper skill While art requirement, technique effect easy to operate and that a nail is dual-purpose is also realized, meanwhile, simplify logistics stock.Such as Fig. 1 It is shown, in the left and right sides of center line, it is clearly visible the principle signal of both switchings.

The embodiment two of the utility model is exactly on the basis of embodiment one, by the external cylindrical surface 22 of washer 2, with connecing Inner cylinder 32 on bone plate 3, makes hemispherical cooperation into so that bone nail 1 can not only be made up and down compared with bone plate 3, left The right side, the micro movement of front and rear six direction can also make the swing of certain angle around the barycenter of sphere.

The embodiment three of the utility model is exactly on the basis of embodiment one, makes another exploration, i.e., by embodiment The screens 13 of the slot semi-cylindrical of the top surface of the cylinder of 1 upper end of bone nail in one, with the groove 23 of washer inner chamber bottom surface It cooperates, makes into, on the cylindrical surface 27 of the inner cavity of the external cylindrical surface 12 and washer 2 of bone nail 1, to be adjusted with screw thread pair each other Switching.

Above-described embodiment is the utility model preferred embodiment, other its all principles and basic structure and the present embodiment phase It is same or approximate, within scope of protection of the utility model.

Claims (6)

1. a kind of On Fluctuations Novel bone screw combination with handoff functionality, this combination, which belongs to, applies in bone surgery Device, including bone nail, bone plate and washer, it is characterised in that：The upper end of the bone nail, in cylinder, this cylinder Top surface be equipped with slot for driver, and then there is the screens of the semi-cylindrical of one group of protrusion in bottom surface, and the washer top is also set There is a slot for driver, hollow inner bottom surface, the screens equipped with one group and the bottom surface of the upper end cylinder of bone nail is matched The groove of semi-cylindrical, and this groove and the slot on top are spatially crossed as 90 degree.

2. the On Fluctuations Novel bone screw combination according to claim 1 with handoff functionality, it is characterised in that：Described The inner cylinder cavity of washer, with the external cylindrical surface of the bone nail upper end in clearance fit, and axial line overlaps, washer it is interior , there is a perforation in bottom surface, and the lower end of bone nail is equipped with screw thread, is pierced by from this hole, for being implanted into bone to be plugged into.

3. the On Fluctuations Novel bone screw combination according to claim 1 with handoff functionality, it is characterised in that：Described Washer and the bone nail upper end, the slot for driver being equipped with simultaneously or separately uses for driver, so as to real The screens of the semi-cylindrical of the bottom of the existing bone nail upper end cylinder, with the groove phase on the inner bottom surface of the washer It overlaps with separating.

4. the On Fluctuations Novel bone screw combination according to claim 1 with handoff functionality, it is characterised in that：Described The outer surface of washer, cylinder, the fluted column shape being equipped with the bone plate depending on clinical need is perforated, and is matched It closes.

5. the On Fluctuations Novel bone screw combination according to claim 4 with handoff functionality, it is characterised in that：Described The outer surface of washer, hemispherical, the recessed hemispherical being equipped with the bone plate depending on clinical need is perforated, and is matched It closes.

6. the On Fluctuations Novel bone screw with handoff functionality combines according to claim 4, it is characterised in that：The pad The inner cylinder cavity of circle coordinates with the external cylindrical surface of the bone nail upper end in screw thread pair, using the relative movement of screw thread pair, Realize switching.